:root {
  color-scheme: light;
  font-family: 'Outfit', system-ui, -apple-system, sans-serif;

  /* Color System - Google AI Inspired */
  --primary: #1a73e8;
  /* Google Blue */
  --primary-hover: #1765cc;
  --primary-light: rgba(26, 115, 232, 0.08);
  --primary-tonal: #f8fbff;

  --success: #1e8e3e;
  /* Google Green */
  --success-hover: #187232;
  --success-light: #e6f4ea;
  --success-text: #137333;

  --danger: #d93025;
  /* Google Red */
  --danger-hover: #b3261e;
  --danger-light: #fce8e6;
  --danger-text: #a50e0e;

  --warning: #f9ab00;
  /* Google Amber */
  --warning-bg: linear-gradient(135deg, #fef7e0 0%, #feefc3 100%);
  --warning-text: #b06000;

  --bg-main: #f8f9fa;
  --bg-card: #ffffff;
  --bg-input: #f1f3f4;

  --text-main: #202124;
  --text-muted: #5f6368;
  --border-light: #dadce0;

  /* Elevation & Radius - Airy Feel */
  --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.302), 0 1px 3px 1px rgba(60, 64, 67, 0.149);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-premium: 0 10px 40px rgba(0, 0, 0, 0.04);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-pill: 500px;

  --transition-base: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  /* Bouncy spring transition */
  --transition-fast: all 0.2s ease-out;
}

/* Premium Animations */
@keyframes popIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes pulse-soft {
  0% {
    box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4);
  }

  70% {
    box-shadow: 0 0 0 10px rgba(26, 115, 232, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(26, 115, 232, 0);
  }
}

body {
  margin: 0;
  background: var(--bg-main);
  color: var(--text-main);
}

/* ============================================
   App Preloader
   ============================================ */
.tutorial-action-text {
  font-weight: 700;
  color: #fbbf24;
  /* Amber-400 for high contrast on dark background */
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.app-preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-main);
  /* Match background precisely */
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  /* Always on top */
  transition: opacity 0.4s ease, visibility 0.4s;
}

.app-preloader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.preloader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--primary-light);
  border-top: 4px solid var(--primary);
  border-radius: var(--radius-pill);
  animation: spin 1s linear infinite;
}

.preloader-text {
  font-size: 1.1rem;
  font-weight: 500;

  /* Global Replacement of Hardcoded Colors with Variables */
  /* Note: This is a strategic targeted replacement for key UI elements */

  color: var(--primary);
  /* Replaces #6366f1 (indigo) to align with primary blue */

  margin: 0;
  letter-spacing: 0.5px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* ============================================
   Demo Feedback Banner
   ============================================ */


/* ============================================
   Feedback Toast (New)
   ============================================ */
.feedback-toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 9900;
  animation: slideInToast 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  max-width: 360px;
}

@keyframes slideInToast {
  from {
    transform: translateY(100%);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.feedback-toast-content {
  display: flex;
  gap: 12px;
  align-items: center;
}

.toast-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--text-main);
}

.feedback-link-toast {
  color: #b45309;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.85rem;
}

.feedback-link-toast:hover {
  text-decoration: underline;
}

/* Legacy banner styles removed */

/* ============================================
   Tutorial Replay Settings
   ============================================ */
.tutorial-replay-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 2px dashed #e5e7eb;
}

.tutorial-replay-header {
  margin: 0 0 8px 0;
  font-size: 1.1rem;
  color: var(--text-main);
}

.tutorial-replay-desc {
  margin: 0 0 16px 0;
  color: #64748b;
  font-size: 0.95rem;
}

.tutorial-toggle-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.tutorial-toggle-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-main);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.tutorial-toggle-item:hover {
  background: white;
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.toggle-label {
  font-weight: 500;
  color: #334155;
  font-size: 0.9rem;
}

/* Custom Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: .4s;
  border-radius: 24px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.toggle-switch input:checked+.toggle-slider {
  background-color: #2563eb;
}

.toggle-switch input:checked+.toggle-slider:before {
  transform: translateX(20px);
}

/* Notification/Info Box (dismissible) */
.notification-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.9rem;
  position: relative;
}

.notification-box.important-notice {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 1px solid #f59e0b;
  color: #92400e;
}

.info-box-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: #92400e;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  opacity: 0.7;
  transition: opacity 0.2s ease;
  flex-shrink: 0;
}

.info-box-close:hover {
  opacity: 1;
}

@media (max-width: 600px) {
  .feedback-banner {
    padding: 12px 16px;
    flex-direction: column;
    gap: 12px;
  }

  .feedback-banner-content {
    width: 100%;
  }

  .feedback-text-en,
  .feedback-text-vi {
    font-size: 0.9rem;
    gap: 8px;
    width: 100%;
    justify-content: center;
  }

  .feedback-link {
    padding: 6px 12px;
    font-size: 0.85rem;
    white-space: nowrap;
  }

  .container {
    margin: 0;
    padding: 24px;
    width: 100%;
    max-width: none;
    border-radius: 0;
    box-shadow: none;
  }

  h1 {
    font-size: 1.5rem;
    margin-bottom: 16px;
  }

  .tabs {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 4px;
    /* for scrollbar */
    margin-bottom: 16px;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn {
    padding: 8px 16px;
    flex-shrink: 0;
  }
}

.container {
  max-width: 1100px;
  margin: 64px auto;
  padding: 40px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-premium);
  transition: var(--transition-base);
}

h1 {
  margin-top: 0;
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 40px;
}

/* ============================================
   Modern Dashboard (Intent-Based)
   ============================================ */
.dashboard-modern-container {
  margin-top: 32px;
}

.dashboard-segmented-control {
  display: inline-flex;
  background: var(--bg-input);
  padding: 4px;
  border-radius: var(--radius-pill);
  position: relative;
  margin: 0 auto 32px auto;
  left: 50%;
  transform: translateX(-50%);
  /* gap: 4px; removed to support absolute backdrop */
}

.segmented-backdrop {
  position: absolute;
  top: 4px;
  left: 0;
  height: calc(100% - 8px);
  background: white;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  /* Softer shadow */
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  /* Smoother slide */
  pointer-events: none;
  z-index: 0;
}

.segmented-btn {
  padding: 10px 24px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  z-index: 1;
}

.segmented-btn.active {
  color: var(--primary);
  background: transparent;
  box-shadow: none;
}

.dashboard-content-wrapper {
  overflow: hidden;
  position: relative;
}

.dashboard-section-header {
  margin-bottom: 24px;
  text-align: left;
}

.dashboard-section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
}

.dashboard-section-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Card Grid Layouts */
.tutorial-grid,
.growth-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

/* Modern Card Design - Premium (Buttery Smooth) */
:root {
  --r-card: 22px;
  --r-inner: 18px;
  --ease-smooth: cubic-bezier(0.2, 0.9, 0.2, 1);
  --sh-1: 0 10px 30px rgba(15, 23, 42, 0.08);
  --sh-2: 0 18px 60px rgba(15, 23, 42, 0.12);
}

.modern-card {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: var(--r-card);
  cursor: pointer;
  transition:
    transform 0.25s var(--ease-smooth),
    box-shadow 0.25s var(--ease-smooth),
    border-color 0.25s var(--ease-smooth);
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--sh-1);
  overflow: hidden;
  /* integrated top visual */
}

.modern-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-2);
  border-color: rgba(15, 23, 42, 0.12);
  background: rgba(255, 255, 255, 0.95);
}

/* Selected Mode Indicator - Buttery (Soft Ring + Glow) */
.mode-switch-btn.is-active {
  transform: translateY(-2px);
  box-shadow:
    0 18px 50px rgba(15, 23, 42, 0.14),
    0 0 0 3px color-mix(in srgb, var(--visual-fg, var(--primary)) 65%, white);
  /* smooth ring */
  border-color: transparent;
  /* allow ring to show */
}

/* Smooth Rail (matches radius) */
.mode-switch-btn.is-active::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 10px;
  background: linear-gradient(180deg,
      color-mix(in srgb, var(--visual-fg, var(--primary)) 90%, white),
      var(--visual-fg, var(--primary)));
  border-radius: var(--r-card) 0 0 var(--r-card);
  pointer-events: none;
  z-index: 5;
  box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.35);
}

/* Smooth Selected Pill */
.mode-switch-btn.is-active::after {
  content: "Selected";
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 7px 11px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--visual-fg, var(--primary)) 88%, white);
  color: white;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.2px;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(6px);
  z-index: 35;
}

/* Accessibility: Focus Visible State */
.mode-switch-btn:focus-visible {
  outline: 3px solid #111827;
  outline-offset: 3px;
  border-radius: var(--r-card);
}

.card-visual {
  height: 140px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  /* Clip top corners to match card */
  border-radius: var(--r-card) var(--r-card) 0 0;
}

/* What's this? Tutorial Link */
.whats-this-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--primary, #2563eb);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: rgba(37, 99, 235, 0.3);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s var(--ease-smooth), transform 0.2s var(--ease-smooth);
}

.whats-this-link:hover {
  text-decoration-color: var(--primary, #2563eb);
}

/* Show link on card hover/focus */
.modern-card:hover .whats-this-link,
.modern-card:focus-within .whats-this-link {
  opacity: 1;
  transform: translateY(0);
}

/* Animation Containers */
.anim-container {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  position: relative;
  z-index: 10;
  contain: layout;
}

/* Ensure inner circles match curvature */
.anim-container::before {
  border-radius: var(--r-inner);
}

.anim-container::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 18px;
  background: var(--visual-bg, #eef2ff);
  opacity: 0.9;
  z-index: -1;
}

/* Interaction Control: Paused by default, Run on hover/focus */
.type-dot,
.wave-bar,
.ripple-ring,
.watch-anim-box::after,
.fill-line::after,
.fill-icon-svg,
.note-dot-line,
.wave-tick,
.caret,
.type-bar,
.flow-line,
.flow-head,
.phoneme-link,
.phoneme-node,
.stress-bar,
.radiate-ring,
.mic-body,
.transcript-line,
.check-draw,
.word-chip,
.chip-check,
.chip-check-mark,
.play-pop,
.progress-sweep,
.subtitle-bubble,
.transfer-arrow,
.note-line,
.flash-front,
.refresh-arrow,
.refresh-head,
.clock-hand,
.chart-draw,
.flag-pop,
.confetti {
  animation-play-state: paused;
  will-change: transform, opacity;
}

/* Run animations on Hover/Focus */
@media (hover: hover) and (pointer: fine) {

  .modern-card:hover :is(.type-dot, .wave-bar, .ripple-ring, .watch-anim-box::after, .fill-line::after, .fill-icon-svg, .note-dot-line,
    .srs-card, .srs-glow, .sparkle, .chart-path, .stats-bar, .stats-pulse,
    .wave-tick, .caret, .type-bar, .flow-line, .flow-head,
    .mic-body, .transcript-line, .check-draw,
    .word-chip, .chip-check, .chip-check-mark,
    .play-pop, .progress-sweep, .subtitle-bubble,
    .transfer-arrow, .note-line,
    .phoneme-link, .phoneme-node, .stress-bar, .radiate-ring,
    .flash-front, .refresh-arrow, .refresh-head, .clock-hand,
    .chart-draw, .flag-pop, .confetti) {
    animation-play-state: running;
  }
}

/* Always run on keyboard focus for accessibility */
.modern-card:focus-within :is(.type-dot, .wave-bar, .ripple-ring, .watch-anim-box::after, .fill-line::after, .fill-icon-svg, .note-dot-line,
  .srs-card, .srs-glow, .sparkle, .chart-path, .stats-bar, .stats-pulse,
  .wave-tick, .caret, .type-bar, .flow-line, .flow-head,
  .mic-body, .transcript-line, .check-draw,
  .word-chip, .chip-check, .chip-check-mark,
  .play-pop, .progress-sweep, .subtitle-bubble,
  .transfer-arrow, .note-line,
  .phoneme-link, .phoneme-node, .stress-bar, .radiate-ring,
  .flash-front, .refresh-arrow, .refresh-head, .clock-hand,
  .chart-draw, .flag-pop, .confetti) {
  animation-play-state: running;
}

/* Mode Variables */
.visual-type {
  --visual-bg: #eaf2ff;
  --visual-fg: var(--primary);
  --visual-accent: #60a5fa;
}

.visual-speak {
  --visual-bg: #fff7ed;
  --visual-fg: #f59e0b;
  --visual-accent: #fbbf24;
}

.visual-pronounce {
  --visual-bg: #ecfdf5;
  --visual-fg: #10b981;
  --visual-accent: #34d399;
}

.visual-watch {
  --visual-bg: #fff1f2;
  --visual-fg: #f43f5e;
  --visual-accent: #fb7185;
}

.visual-fill {
  --visual-bg: #f3e8ff;
  --visual-fg: #8b5cf6;
  --visual-accent: #a78bfa;
}

.visual-notes {
  --visual-bg: #eef2ff;
  --visual-fg: #6366f1;
  --visual-accent: #818cf8;
}

.card-visual svg {
  color: var(--visual-fg);
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.05));
}

/* 1. Type Mode: Typing Dots */
.type-anim-box {
  display: flex;
  align-items: center;
  gap: 6px;
}

.type-icon-svg {
  width: 24px;
  height: 24px;
}

.type-dot {
  width: 6px;
  height: 6px;
  background: var(--visual-fg);
  border-radius: 50%;
  transform: translateY(0);
  animation: typingDots 2s ease-in-out infinite;
}

.type-anim-box .type-dot:nth-of-type(1) {
  animation-delay: 0s;
}

.type-anim-box .type-dot:nth-of-type(2) {
  animation-delay: 0.2s;
}

.type-anim-box .type-dot:nth-of-type(3) {
  animation-delay: 0.4s;
}

@keyframes typingDots {

  0%,
  100% {
    transform: translateY(0);
    opacity: 0.3;
  }

  50% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

/* 2. Speak Mode: Audio Wave */
.speak-anim-box {
  display: flex;
  gap: 4px;
  align-items: flex-end;
  height: 32px;
}

.wave-bar {
  width: 6px;
  height: 24px;
  background: var(--visual-fg);
  border-radius: 10px;
  transform-origin: bottom;
  animation: audioWave 2s ease-in-out infinite;
}

.wave-bar:nth-of-type(odd) {
  animation-delay: 0.1s;
}

.wave-bar:nth-of-type(even) {
  animation-delay: 0.3s;
}

@keyframes audioWave {

  0%,
  100% {
    transform: scaleY(0.35);
    opacity: 0.7;
  }

  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

/* 3. Pronounce Mode: Ripple Effect */
.pronounce-anim-box {
  position: relative;
  width: 64px;
  height: 64px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.ripple-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px solid var(--visual-fg);
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.9);
  animation: rippleOut 2s ease-in-out infinite;
}

.ripple-ring:nth-of-type(1) {
  animation-delay: 0s;
}

.ripple-ring:nth-of-type(2) {
  animation-delay: 0.6s;
}

.pronounce-icon-svg {
  width: 32px;
  height: 32px;
  color: #10b981;
  z-index: 2;
  position: relative;
}

@keyframes rippleOut {
  0% {
    transform: scale(0.9);
    opacity: 0;
  }

  30% {
    opacity: 0.6;
  }

  100% {
    transform: scale(3);
    opacity: 0;
  }
}

/* 4. Watch Mode: Play Pulse */
.watch-anim-box {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.watch-anim-box::after {
  content: "";
  position: absolute;
  inset: -2px;
  border: 2px solid var(--visual-fg);
  border-radius: 50%;
  transform: scale(0.9);
  opacity: 0;
  animation: watchRing 2s ease-in-out infinite;
}

.play-icon-svg {
  width: 24px;
  height: 24px;
  color: var(--visual-fg);
  margin-left: 2px;
}

@keyframes watchRing {
  0% {
    transform: scale(0.9);
    opacity: 0;
  }

  30% {
    opacity: 0.6;
  }

  /* Consistent with ripple */
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

/* 5. Fill Animation (Seamless Loop) */
.fill-anim-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fill-line {
  width: 32px;
  height: 4px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.fill-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--visual-fg);
  transform: translateX(-110%);
  animation: fillSlide 2s ease-in-out infinite;
}

.fill-icon-svg {
  width: 24px;
  height: 24px;
  transform: translateY(0) rotate(0deg);
  animation: writeBob 2s ease-in-out infinite;
}

@keyframes fillSlide {
  0% {
    transform: translateX(-110%);
    opacity: 0;
  }

  10% {
    opacity: 1;
  }

  55% {
    transform: translateX(0);
    opacity: 1;
  }

  85% {
    transform: translateX(0);
    opacity: 1;
  }

  98% {
    transform: translateX(0);
    opacity: 0;
  }

  100% {
    transform: translateX(-110%);
    opacity: 0;
  }

  /* Reset invisibly */
}

@keyframes writeBob {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-4px) rotate(-10deg);
  }
}

/* 6. Note Animation (Seamless Loop) */
.note-anim-box {
  width: 44px;
  height: 56px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.note-icon-svg {
  width: 40px;
  height: 40px;
  color: var(--visual-fg);
}

.note-line-overlay {
  position: absolute;
  top: 18px;
  left: 10px;
  right: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.note-dot-line {
  height: 2px;
  background: var(--visual-fg);
  border-radius: 1px;
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  animation: lineAppear 2s ease-in-out infinite;
}

@keyframes lineAppear {
  0% {
    transform: scaleX(0);
    opacity: 0;
  }

  30%,
  70% {
    transform: scaleX(1);
    opacity: 0.8;
  }

  100% {
    transform: scaleX(0);
    opacity: 0;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {

  *,
  ::before,
  ::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Specific Card Mesh Gradients */
.card-visual.visual-type {
  background: radial-gradient(circle at 100% 0%, #e0e7ff 0%, #eff6ff 50%, #ffffff 100%);
}

.card-visual.visual-speak {
  background: radial-gradient(circle at 100% 0%, #fef3c7 0%, #fffbeb 50%, #ffffff 100%);
}

.card-visual.visual-pronounce {
  background: radial-gradient(circle at 100% 0%, #dcfce7 0%, #f0fdf4 50%, #ffffff 100%);
}

.card-visual.visual-watch {
  background: radial-gradient(circle at 100% 0%, #fae8ff 0%, #fdf4ff 50%, #ffffff 100%);
}

.visual-srs {
  --visual-bg: #ecfeff;
  --visual-fg: #06b6d4;
  --visual-accent: #22d3ee;
  background: radial-gradient(circle at 100% 0%, #cffafe 0%, #ecfeff 50%, #ffffff 100%);
}

.visual-stats {
  --visual-bg: #fff1f2;
  --visual-fg: #f43f5e;
  --visual-accent: #fb7185;
  background: radial-gradient(circle at 100% 0%, #ffe4e6 0%, #fff1f2 50%, #ffffff 100%);
}

/* Growth Card Specifics - Scaled Up and Robust */
.srs-svg,
.stats-svg,
.type-icon-svg,
.speak-anim-box,
.pronounce-icon-svg,
.play-icon-svg,
.fill-icon-svg,
.note-icon-svg {
  width: 110px;
  height: 110px;
  transition: var(--transition-base);
}

/* Contextual Icon Base */
.ctx-icon {
  width: 72px;
  height: 72px;
  color: var(--visual-fg);
  transition: var(--transition-base);
}

/* ===== TYPE MODE: waveform → caret → typing bars ===== */
.wave-tick {
  transform-origin: center;
  animation: waveBounce 1.6s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

.caret {
  animation: caretBlink 1s step-end infinite;
}

.type-bar {
  transform-origin: left center;
  animation: typeIn 1.6s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

.flow-line,
.flow-head {
  stroke-dasharray: 60;
  stroke-dashoffset: 60;
  animation: drawArrow 1.6s ease-in-out infinite;
}

@keyframes waveBounce {

  0%,
  100% {
    transform: scaleY(0.85);
    opacity: 0.65;
  }

  50% {
    transform: scaleY(1.15);
    opacity: 1;
  }
}

@keyframes caretBlink {

  0%,
  49% {
    opacity: 1;
  }

  50%,
  100% {
    opacity: 0.25;
  }
}

@keyframes typeIn {

  0%,
  35% {
    transform: scaleX(0);
    opacity: 0;
  }

  55% {
    transform: scaleX(1);
    opacity: 1;
  }

  100% {
    transform: scaleX(1);
    opacity: 0;
  }
}

@keyframes drawArrow {

  0%,
  20% {
    stroke-dashoffset: 60;
    opacity: 0;
  }

  35% {
    opacity: 1;
  }

  55% {
    stroke-dashoffset: 0;
    opacity: 1;
  }

  100% {
    stroke-dashoffset: 0;
    opacity: 0;
  }
}

@keyframes caretBlink {

  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

@keyframes typeIn {

  0%,
  40% {
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left;
  }

  50% {
    opacity: 1;
    transform: scaleX(1);
  }

  100% {
    opacity: 1;
    transform: scaleX(1);
  }
}

/* ===== SPEAK MODE: mic → transcript → checkmark ===== */
.mic-body {
  animation: micPulse 2s ease-in-out infinite;
}

.transcript-line {
  animation: transcriptAppear 2s ease-out infinite;
}

.transcript-line:nth-of-type(1) {
  animation-delay: 0.6s;
}

.transcript-line:nth-of-type(2) {
  animation-delay: 0.8s;
}

.transcript-line:nth-of-type(3) {
  animation-delay: 1.0s;
}

.check-draw {
  animation: checkDraw 2s ease-out infinite;
  animation-delay: 1.4s;
}

@keyframes micPulse {

  0%,
  100% {
    transform: scale(1);
  }

  30% {
    transform: scale(1.05);
  }
}

@keyframes transcriptAppear {

  0%,
  30% {
    opacity: 0;
    transform: translateX(-5px);
  }

  40%,
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes checkDraw {

  0%,
  70% {
    opacity: 0;
    stroke-dasharray: 20;
    stroke-dashoffset: 20;
  }

  80%,
  100% {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

/* ===== FILL MODE: chip snap-in + checkmark flash ===== */
.word-chip {
  animation: chipSnapIn 2s ease-out infinite;
}

.chip-check,
.chip-check-mark {
  animation: chipCheckFlash 2s ease-out infinite;
  animation-delay: 1.2s;
}

@keyframes chipSnapIn {

  0%,
  40% {
    opacity: 0;
    transform: translateY(-15px) scale(0.8);
  }

  50% {
    opacity: 1;
    transform: translateY(2px) scale(1.1);
  }

  60%,
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes chipCheckFlash {

  0%,
  60% {
    opacity: 0;
    transform: scale(0.5);
  }

  70% {
    opacity: 1;
    transform: scale(1.2);
  }

  80%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ===== WATCH MODE: play pop → progress sweep → subtitle ===== */
.play-pop {
  animation: playPop 2s ease-out infinite;
}

.progress-sweep {
  animation: progressSweep 2s ease-out infinite;
  animation-delay: 0.5s;
}

.subtitle-bubble {
  animation: subtitleAppear 2s ease-out infinite;
  animation-delay: 1.2s;
}

@keyframes playPop {

  0%,
  20% {
    transform: scale(0.8);
    opacity: 0.6;
  }

  30%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes progressSweep {

  0%,
  25% {
    width: 0;
  }

  100% {
    width: 20px;
  }
}

@keyframes subtitleAppear {

  0%,
  60% {
    opacity: 0;
  }

  70%,
  90% {
    opacity: 0.8;
  }

  100% {
    opacity: 0;
  }
}

/* ===== NOTE MODE: video → arrow → note lines ===== */
.transfer-arrow {
  animation: arrowPulse 2s ease-in-out infinite;
}

.note-line {
  animation: noteLineAppear 2s ease-out infinite;
}

.note-line:nth-of-type(1) {
  animation-delay: 0.8s;
}

.note-line:nth-of-type(2) {
  animation-delay: 1.0s;
}

.note-line:nth-of-type(3) {
  animation-delay: 1.2s;
}

@keyframes arrowPulse {

  0%,
  100% {
    transform: translateX(0);
    opacity: 0.7;
  }

  50% {
    transform: translateX(3px);
    opacity: 1;
  }
}

@keyframes noteLineAppear {

  0%,
  40% {
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left;
  }

  50%,
  100% {
    opacity: 1;
    transform: scaleX(1);
  }
}

/* ===== PRONOUNCE MODE: phoneme nodes → stress bar → radiate ===== */
.phoneme-link {
  stroke-dasharray: 80;
  stroke-dashoffset: 80;
  animation: linkDraw 2s ease-in-out infinite;
}

.phoneme-node {
  transform-origin: center;
  animation: nodeSettle 2s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

.stress-bar {
  transform-origin: center bottom;
  animation: stressPulse 2s ease-in-out infinite;
}

.radiate-ring {
  transform-origin: center;
  animation: radiate 2s ease-in-out infinite;
}

@keyframes linkDraw {

  0%,
  20% {
    stroke-dashoffset: 80;
    opacity: 0;
  }

  40% {
    opacity: 1;
  }

  60% {
    stroke-dashoffset: 0;
    opacity: 1;
  }

  100% {
    stroke-dashoffset: 0;
    opacity: 0;
  }
}

@keyframes nodeSettle {

  0%,
  35% {
    transform: translateY(2px) scale(0.92);
    opacity: 0.6;
  }

  55% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }

  100% {
    transform: translateY(0) scale(1);
    opacity: 0.85;
  }
}

@keyframes stressPulse {

  0%,
  45% {
    transform: scaleY(0.85);
    opacity: 0.8;
  }

  60% {
    transform: scaleY(1.15);
    opacity: 1;
  }

  100% {
    transform: scaleY(0.9);
    opacity: 0.8;
  }
}

@keyframes radiate {
  0% {
    transform: scale(0.85);
    opacity: 0;
  }

  35% {
    opacity: 0.45;
  }

  100% {
    transform: scale(1.35);
    opacity: 0;
  }
}

/* ===== SRS MODE: flashcard flip → refresh arrow → clock tick ===== */
.flash-front {
  animation: flashFlip 2s ease-out infinite;
}

.refresh-arrow,
.refresh-head {
  animation: refreshRotate 2s ease-out infinite;
  animation-delay: 1s;
  transform-origin: 36px 44px;
}

.clock-hand {
  animation: clockTick 2s linear infinite;
  transform-origin: 22px 56px;
}

@keyframes flashFlip {

  0%,
  40% {
    transform: rotateY(0);
  }

  50% {
    transform: rotateY(15deg);
  }

  60%,
  100% {
    transform: rotateY(0);
  }
}

@keyframes refreshRotate {

  0%,
  50% {
    transform: rotate(0);
  }

  75%,
  100% {
    transform: rotate(30deg);
  }
}

@keyframes clockTick {
  0% {
    transform: rotate(0);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* ===== STATS MODE: chart draw → flag pop → confetti ===== */
.chart-draw {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: chartDraw 2s ease-out infinite;
}

.flag-pop {
  animation: flagPop 2s ease-out infinite;
  animation-delay: 1.2s;
}

.confetti {
  animation: confettiPop 2s ease-out infinite;
  animation-delay: 1.5s;
}

@keyframes chartDraw {

  0%,
  20% {
    stroke-dashoffset: 100;
  }

  60%,
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes flagPop {

  0%,
  60% {
    opacity: 0;
    transform: scale(0.5);
  }

  70% {
    opacity: 1;
    transform: scale(1.2);
  }

  80%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes confettiPop {

  0%,
  75% {
    opacity: 0;
    transform: scale(0);
  }

  85% {
    opacity: 1;
    transform: scale(1.5);
  }

  100% {
    opacity: 0;
    transform: scale(0.5) translateY(5px);
  }
}

/* Glassmorphism Classes for SVGs */
.glass-layer {
  fill: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
  stroke: rgba(255, 255, 255, 0.8);
}

/* SRS Animations - 3D Fan Out */
.srs-card {
  transform-origin: center;
  transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card-back {
  opacity: 0.2;
  transform: translate(-20px, 20px) rotate(-15deg) scale(0.9);
}

.card-mid {
  opacity: 0.4;
  transform: translate(-10px, 10px) rotate(-8deg) scale(0.95);
}

.card-front {
  opacity: 0.9;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.1));
}

.modern-card:hover .card-back {
  transform: translate(-40px, 30px) rotate(-25deg) scale(1.05);
  opacity: 0.4;
}

.modern-card:hover .card-mid {
  transform: translate(-15px, 15px) rotate(-12deg) scale(1.1);
  opacity: 0.6;
}

.modern-card:hover .card-front {
  transform: translate(20px, -20px) rotate(8deg) scale(1.15);
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.15));
}

.srs-glow {
  animation: pulseGlow 3s ease-in-out infinite;
}

.srs-sparkle {
  transform-origin: center;
  animation: sparkleRotate 5s linear infinite;
}

.srs-star {
  fill: #fbbf24;
  filter: drop-shadow(0 0 8px #fbbf24);
  animation: starTwinkle 2s ease-in-out infinite;
}

/* Stats Animations - Rich Trace */
.chart-path {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  filter: drop-shadow(0 0 8px var(--visual-fg));
}

.modern-card:hover .chart-path {
  animation: drawChartLong 2s ease-out forwards;
}

.stats-bar {
  transform-origin: bottom;
  transform: scaleY(0.4);
  transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modern-card:hover .stats-bar {
  transform: scaleY(1);
}

.stats-pulse {
  transform-origin: center;
  animation: statsPulseRingRobust 2s ease-out infinite;
}

/* Keyframes */
@keyframes srsFloat {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(-8px);
  }
}

@keyframes pulseGlow {

  0%,
  100% {
    opacity: 0.1;
    r: 20;
  }

  50% {
    opacity: 0.4;
    r: 35;
  }
}

@keyframes sparkleRotate {
  from {
    transform: rotate(0deg) scale(0.8);
  }

  50% {
    transform: rotate(180deg) scale(1.3);
  }

  to {
    transform: rotate(360deg) scale(0.8);
  }
}

@keyframes starTwinkle {

  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

@keyframes drawChartLong {
  from {
    stroke-dashoffset: 400;
  }

  to {
    stroke-dashoffset: 0;
  }
}

@keyframes statsPulseRingRobust {
  0% {
    transform: scale(0.5);
    opacity: 1;
    stroke-width: 4;
  }

  100% {
    transform: scale(2.5);
    opacity: 0;
    stroke-width: 1;
  }
}

@keyframes pulseGlow {

  0%,
  100% {
    opacity: 0.1;
    r: 15;
  }

  50% {
    opacity: 0.3;
    r: 20;
  }
}

@keyframes sparkleRotate {
  from {
    transform: rotate(0deg) scale(0.8);
  }

  50% {
    transform: rotate(180deg) scale(1.2);
  }

  to {
    transform: rotate(360deg) scale(0.8);
  }
}

@keyframes drawChart {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes statsPulseRing {
  0% {
    transform: scale(0.8);
    opacity: 0.8;
  }

  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

/* Removed legacy ::after icons */

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  background: white;
  /* Force white background for text area */
  position: relative;
  z-index: 2;
}

.card-body h3 {
  margin: 0 0 8px 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.card-body p {
  margin: 0 0 16px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
}

.srs-card-modern,
.stats-card-modern {
  background: white;
  border: 1px solid var(--border-light);
}

.dashboard-srs-status {
  background: #f8fafc;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 16px;
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--primary);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-main);
}

.srs-card-modern .card-visual {
  background: #e8f0fe;
}

.stats-card-modern .card-visual {
  background: #fce8e6;
}

/* Active Mode Card Styling */
.mode-switch-btn.active {
  border-width: 2px;
  border-color: var(--primary);
  background: var(--primary-tonal) !important;
  /* Force light tint */
  box-shadow: 0 8px 24px rgba(26, 115, 232, 0.12);
}

.mode-switch-btn.active .card-cta {
  background: var(--primary);
  color: white;
}

/* Badge Styles - Repositioned for Alignment */
.badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 30;
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: white;
  color: var(--text-main);
  border: 1px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  pointer-events: none;
}

.badge.new {
  background: var(--success-light);
  color: var(--success-text);
}

.badge.experimental {
  background: #fef3c7;
  color: #92400e;
  box-shadow: 0 0 10px rgba(251, 191, 36, 0.3);
  animation: badgeGlow 3s infinite alternate;
}

@keyframes badgeGlow {
  from {
    box-shadow: 0 0 5px rgba(251, 191, 36, 0.2);
  }

  to {
    box-shadow: 0 0 15px rgba(251, 191, 36, 0.5);
  }
}

/* Direct CTA Buttons in Cards */
.card-cta {
  padding: 12px 20px;
  border: 2px solid var(--primary);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  margin-top: auto;
  text-align: center;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

.modern-card:hover .card-cta {
  opacity: 1;
  transform: translateY(0);
  background: var(--primary);
  color: white;
  pointer-events: auto;
}

.card-cta.primary {
  background: var(--primary);
  color: white;
  border: none;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.card-cta.primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* Carousel/Panel Transitions */
.dashboard-panel {
  display: none;
}

.dashboard-panel.active {
  display: block;
  animation: slideCarousel 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideCarousel {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.dashboard-content-wrapper {
  transition: height 0.3s ease;
}

.whats-this-container-modern {
  text-align: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

/* Compact version - closer to mode cards */
.whats-this-container-compact {
  text-align: center;
  margin-top: 16px;
  padding-top: 12px;
}

#what-is-this-btn {
  padding: 12px 24px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: white;
  color: var(--primary);
  border: 1px solid var(--primary);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.15);
  transition: var(--transition-base);
  animation: pulse-soft 3s infinite;
}

#what-is-this-btn.btn-compact {
  padding: 10px 20px;
  font-size: 0.9rem;
}

#what-is-this-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 115, 232, 0.25);
}

/* Unified Control Toolbar */
.unified-controls {
  margin-bottom: 1.5rem;
  background: white;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  padding: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.control-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 32px;
  flex-wrap: wrap;
}

.playback-group,
.status-group,
.action-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Badge & Hint Styles */
.badge-status {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-replay {
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.hint-badge-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #92400e;
  cursor: pointer;
  transition: all 0.2s ease;
}

.hint-badge-btn:hover:not(:disabled) {
  background: #fef3c7;
  border-color: #fcd34d;
  transform: translateY(-1px);
}

.hint-cost {
  background: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* Hint Drawer */
.auto-hints-type-drawer {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #f1f5f9;
  font-size: 0.95rem;
}


/* Premium Mode Helper Modal */
.mode-helper-content {
  max-width: 550px;
  text-align: center;
  padding: 48px !important;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  animation: popIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.mode-helper-header {
  margin-bottom: 40px;
}

.mode-helper-icon {
  font-size: 3.5rem;
  margin-bottom: 24px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.mode-helper-header h2 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #1a73e8 0%, #8ab4f8 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.mode-helper-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.helper-option {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
  text-align: left;
}

.helper-option:hover {
  background: linear-gradient(to right, #ffffff, #f8fbff);
  border-color: var(--primary);
  box-shadow: 0 12px 24px rgba(26, 115, 232, 0.12);
  transform: translateY(-4px) scale(1.02);
}

.option-emoji {
  font-size: 1.75rem;
}

.option-text {
  display: flex;
  flex-direction: column;
}

.option-text strong {
  font-size: 1rem;
  color: var(--text-main);
}

.option-text span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Multiple Choice Goal Selection */
.helper-option-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-main);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
  text-align: left;
}

.helper-option-checkbox:hover {
  background: linear-gradient(to right, #ffffff, #f8fbff);
  border-color: var(--primary);
  box-shadow: 0 8px 20px rgba(26, 115, 232, 0.1);
  transform: translateY(-2px);
}

.helper-option-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.helper-option-checkbox:has(input:checked) {
  background: linear-gradient(to right, #e8f0fe, #f0f6ff);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.15);
}

.helper-option-checkbox .option-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

/* Mode Helper Actions */
.mode-helper-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

/* Suggestions Panel */
.mode-helper-suggestions {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

.mode-helper-suggestions h3 {
  margin-bottom: 16px;
  font-size: 1.1rem;
  color: var(--primary);
}

.mode-suggestions-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-main);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
}

.suggestion-item:hover {
  border-color: var(--primary);
  background: #fafbfc;
}

.suggestion-item.selected {
  background: linear-gradient(to right, #e8f0fe, #f0f6ff);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.15);
}

.suggestion-item input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.suggestion-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.suggestion-icon {
  font-size: 1.5rem;
}

.suggestion-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.suggestion-text strong {
  font-size: 1rem;
  color: var(--primary);
}

.suggestion-text span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Shake animation for validation */
@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-5px);
  }

  75% {
    transform: translateX(5px);
  }
}

.shake {
  animation: shake 0.3s ease-in-out;
}

/* Disabled state when max selections reached */
.helper-option-checkbox.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  background: #f5f5f5;
  border-color: #e0e0e0;
}

/* Utility class for step visibility */
.is-hidden {
  display: none !important;
}

/* Helper text for max selection limit */
.goal-limit-helper {
  display: inline-block;
  padding: 4px 12px;
  margin-top: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--success-text, #16a34a);
  background: var(--success-light, #dcfce7);
  border-radius: var(--radius-pill, 20px);
  opacity: 0;
  transform: translateY(-5px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.goal-limit-helper.visible {
  opacity: 1;
  transform: translateY(0);
}

.mode-panel.active {
  display: block !important;
  animation: fadeIn 0.4s ease-out;
}

/* Tab System (Restored for Utility/Compatibility) */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-light);
}

.tab-btn {
  padding: 10px 20px;
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-base);
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Card Visual Animations (Show-Don't-Tell) */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.question-selector {
  margin-bottom: 24px;
  padding: 20px;
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.question-selector:hover {
  border-color: var(--primary);
  background: white;
  box-shadow: var(--shadow-sm);
}

.question-selector label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}

.question-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  margin-bottom: 8px;
  transition: var(--transition-base);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235f6368' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.question-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.question-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.875rem;
  color: #6b7280;
}

.question-info span {
  font-weight: 600;
  color: var(--text-main);
}

.question-id-display {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.question-id-display label {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
  margin: 0;
}

.current-question-id {
  font-weight: 600;
  color: var(--primary);
  font-size: 1rem;
}

.question-total {
  margin-top: 8px;
  font-size: 0.875rem;
  color: #6b7280;
}

.controls {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 1px 2px rgba(26, 115, 232, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--primary);
  border-color: var(--border-light);
}

.btn-secondary:hover {
  background: var(--primary-light);
  border-color: var(--primary);
}

.btn-success {
  background: var(--success);
  color: white;
}

.btn-success:hover {
  background: var(--success-hover);
}

.btn-danger {
  background: var(--danger-light);
  color: var(--danger-text);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.play-btn {
  background: var(--primary);
  color: white;
}

.play-btn:hover {
  background: var(--primary-hover);
}

.record-btn {
  background: var(--danger-light);
  color: var(--danger-text);
}

.record-btn:hover {
  background: var(--danger);
  color: white;
}

.record-btn.recording {
  background: var(--primary);
  color: white;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.7;
  }
}

.check-btn {
  background: #16a34a;
  color: white;
}

.check-btn:hover {
  background: #15803d;
}

.input-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}

textarea {
  width: 100%;
  min-height: 140px;
  max-height: 40vh;
  overflow-y: auto;
  padding: 20px;
  background: var(--bg-input);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  font-size: 1.1rem;
  line-height: 1.6;
  font-family: inherit;
  resize: vertical;
  margin-bottom: 0;
  box-sizing: border-box;
  transition: var(--transition-base);
}

textarea:focus {
  outline: none;
  background: white;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.textarea {
  width: 100%;
  min-height: 120px;
  max-height: 40vh;
  overflow-y: auto;
  padding: 12px;
  border: 2px solid #d0d7de;
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
  margin-bottom: 12px;
}

.textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.transcription-display {
  margin-top: 16px;
  padding: 16px;
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  min-height: 60px;
}

.transcription-text {
  font-size: 0.95rem;
  color: #6b7280;
  font-style: italic;
  min-height: 20px;
}

.transcription {
  margin-top: 12px;
  padding: 12px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  min-height: 40px;
  font-size: 0.95rem;
  color: #6b7280;
  font-style: italic;
}

.transcription.empty {
  color: #9ca3af;
}

.recording-status {
  margin-top: 8px;
  font-size: 0.875rem;
  color: #6b7280;
  font-style: italic;
}

.recording-status.active {
  color: #dc2626;
  font-weight: 600;
}

.score {
  margin-top: 12px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}

.animation-panel {
  margin-top: 24px;
  padding: 24px;
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.animation-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.animation-header span {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-main);
}

.animation-controls {
  display: flex;
  gap: 8px;
}

#skip-animation-btn {
  padding: 8px 16px;
  background: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-base);
}

#skip-animation-btn:hover {
  background: var(--bg-input);
  color: var(--text-main);
  border-color: var(--text-muted);
}

#replay-btn {
  padding: 8px 16px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-base);
  box-shadow: 0 1px 2px rgba(26, 115, 232, 0.2);
}

#replay-btn:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

.animation {
  min-height: 80px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  font-size: 1.25rem;
  line-height: 1.6;
  text-align: center;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.animation-word {
  display: inline-block;
  margin: 0 4px;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.animation-word.current {
  background: #dbeafe;
  color: #1e40af;
  font-weight: 600;
  transform: scale(1.1);
}

.animation-word.correct {
  background: #dcfce7;
  color: #166534;
}

.animation-word.incorrect {
  background: #fee2e2;
  color: #991b1b;
}

.anim-word {
  display: inline-block;
  margin: 0 4px;
  padding: 2px 4px;
  border-radius: 4px;
}

.anim-empty {
  opacity: 0.3;
}

.anim-add {
  background: #dcfce7 !important;
  color: #166534 !important;
  font-weight: 600;
}

.anim-remove {
  background: #fee2e2 !important;
  color: #991b1b !important;
  font-weight: 600;
}

#result {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
}

.result-text {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 12px;
}

.word {
  display: inline-block;
  margin: 0 2px;
  padding: 2px 4px;
  border-radius: 3px;
}

.word.match {
  background: transparent;
  color: var(--text-main);
}

.word.missing {
  background: #fee2e2;
  color: #991b1b;
  text-decoration: none;
}

.word.extra {
  background: #f3e8ff;
  color: #6b21a8;
  text-decoration: line-through;
}

.word.misplaced {
  background: #dbeafe;
  color: #1e40af;
  text-decoration: none;
}

.pronunciation-panel {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: #f8fafc;
}

.pronunciation-header {
  margin-bottom: 8px;
  font-weight: 600;
  color: #0f172a;
}

.pronunciation-subheader {
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: #6b7280;
  font-style: italic;
}

.pronunciation-words {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pronunciation-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  flex-wrap: wrap;
}

.pronunciation-word {
  min-width: 120px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
}

.pronunciation-record-btn {
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid #d0d7de;
  background: var(--bg-card);
  color: #111827;
  cursor: pointer;
  transition: background 0.2s ease;
}

.pronunciation-record-btn:hover {
  background: #f3f4f6;
}

.pronunciation-record-btn.recording {
  background: #0891b2;
  color: white;
  border-color: #0891b2;
}

.pronunciation-status {
  font-size: 0.875rem;
  color: #6b7280;
  font-style: italic;
}



.breakdown-panel {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: #f8fafc;
}

.breakdown-header {
  margin-bottom: 12px;
  font-weight: 600;
  color: #0f172a;
}

.breakdown-options {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.breakdown-option-btn {
  padding: 8px 16px;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  background: var(--bg-card);
  color: #6b7280;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.breakdown-option-btn:hover {
  background: #f3f4f6;
  color: #111827;
}

.breakdown-option-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.breakdown-lines {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.breakdown-line {
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
}

.breakdown-line-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.breakdown-line-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: #6b7280;
}

.breakdown-line-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.breakdown-play-btn,
.breakdown-record-btn {
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid #d0d7de;
  background: var(--bg-card);
  color: #111827;
  cursor: pointer;
  transition: background 0.2s ease;
}

.breakdown-play-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.breakdown-record-btn:hover {
  background: #dc2626;
  color: white;
  border-color: #dc2626;
}

.breakdown-record-btn.recording {
  background: #0891b2;
  color: white;
  border-color: #0891b2;
}

.breakdown-status {
  font-size: 0.875rem;
  color: #6b7280;
  min-width: 120px;
}

.breakdown-status.correct {
  color: #166534;
  font-weight: 600;
}

.breakdown-status.incorrect {
  color: #b91c1c;
  font-weight: 600;
}

.skip-word-btn {
  margin-top: 12px;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid #d0d7de;
  background: var(--bg-card);
  color: #6b7280;
  cursor: pointer;
  transition: all 0.2s ease;
}

.skip-word-btn:hover {
  background: #f3f4f6;
  color: #111827;
}

.anim-transcription {
  margin-top: 8px;
  font-size: 0.875rem;
  color: #6b7280;
  font-style: italic;
  text-align: center;
}



/* Same Vocabulary Panel Styles */
.same-vocab-panel {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
}

.same-vocab-header {
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-main);
}

.same-vocab-subheader {
  margin-bottom: 16px;
  font-size: 0.9rem;
  color: #6b7280;
  font-style: italic;
}

.same-vocab-sentences {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.same-vocab-item {
  padding: 16px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: #f8fafc;
}

.same-vocab-word-label {
  margin-bottom: 8px;
  font-size: 0.875rem;
  color: #6b7280;
}

.same-vocab-word-label strong {
  color: var(--text-main);
  font-size: 1rem;
}

.same-vocab-sentence {
  margin-bottom: 12px;
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.5;
}

.same-vocab-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.same-vocab-play-btn {
  padding: 8px 16px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.same-vocab-play-btn:hover {
  background: var(--primary-hover);
}

.same-vocab-input {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px;
  border: 2px solid #d0d7de;
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: inherit;
}

.same-vocab-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.same-vocab-record-btn {
  padding: 8px 16px;
  background: #dc2626;
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.same-vocab-record-btn:hover {
  background: #b91c1c;
}

.same-vocab-record-btn.recording {
  background: #0891b2;
  animation: pulse 1.5s infinite;
}

.same-vocab-transcription {
  width: 100%;
  margin-top: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: inherit;
  min-height: 40px;
  background: #f8fafc;
  color: #6b7280;
  font-style: italic;
  box-sizing: border-box;
  word-wrap: break-word;
}

.same-vocab-transcription.empty {
  color: #9ca3af;
}

.same-vocab-check-btn {
  padding: 8px 16px;
  background: #16a34a;
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.same-vocab-check-btn:hover {
  background: #15803d;
}

.same-vocab-pick-another-btn {
  padding: 8px 16px;
  background: #7c3aed;
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.same-vocab-pick-another-btn:hover {
  background: #6d28d9;
}

.same-vocab-status {
  margin-top: 8px;
  font-size: 0.875rem;
  min-height: 20px;
}

.same-vocab-status.correct {
  color: #16a34a;
  font-weight: 600;
}

.same-vocab-status.incorrect {
  color: #dc2626;
  font-weight: 600;
}

.same-vocab-status.error {
  color: #dc2626;
  font-weight: 600;
}

.legend {
  margin-top: 16px;
  padding: 12px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.875rem;
}

#result .legend {
  margin-top: 16px;
  margin-bottom: 0;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chip {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 3px;
}

.chip.missing {
  background: #fee2e2;
}

.chip.extra {
  background: #f3e8ff;
}

.chip.misplaced {
  background: #dbeafe;
}

.errors {
  color: #dc2626;
  font-weight: 600;
}

.success {
  color: #16a34a;
  font-weight: 600;
}

.ok {
  color: #16a34a;
  font-weight: 600;
}

.correct-sentence {
  margin-top: 12px;
  padding: 12px;
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: 6px;
  font-size: 0.95rem;
  color: #166534;
}

/* Extended Listening Styles */
.reading-phase {
  margin-top: 20px;
  padding: 20px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 8px;
}

.reading-timer {
  margin-bottom: 16px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  text-align: center;
}

.reading-timer span {
  color: var(--text-main);
}

.reading-tip {
  text-align: center;
  margin-bottom: 20px;
  font-size: 0.95rem;
  color: #64748b;
  font-style: italic;
}

.skip-reading-btn {
  display: block;
  margin: 0 auto 20px;
  padding: 10px 20px;
  background: #6b7280;
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.skip-reading-btn:hover {
  background: #4b5563;
}

.full-transcript {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-main);
  max-height: 400px;
  overflow-y: auto;
}

.clickable-word {
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  padding: 2px 1px;
  border-radius: 3px;
  display: inline-block;
}

.clickable-word:hover {
  background-color: #e0f2fe;
  color: #0369a1;
}

.clickable-word.word-speaking {
  background-color: #3b82f6;
  color: white;
  font-weight: 600;
}

.listening-phase {
  margin-top: 20px;
}

.check-result-box {
  margin-top: 12px;
  padding: 12px 16px;
  background: #f0f9ff;
  border: 1px solid #0ea5e9;
  border-radius: 6px;
  color: #0c4a6e;
  font-size: 0.95rem;
  font-weight: 500;
  text-align: center;
}

.extended-audio-controls {
  background: #f9fafb;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
}

/* Notification Box */
.notification-box {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-weight: 500;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.important-notice {
  background-color: #fff1f2;
  border: 1px solid #fecdd3;
  color: #be123c;
}

.important-notice::before {
  content: "⚠️";
  font-size: 1.1rem;
}

.audio-controls-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.play-pause-btn {
  padding: 8px 20px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
}

.play-pause-btn:hover {
  background: var(--primary-hover);
}

.play-pause-btn:active {
  background: #1e40af;
}

.time-display {
  font-size: 0.9rem;
  color: #6b7280;
  font-family: 'Courier New', monospace;
  min-width: 100px;
}

.speed-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.speed-control label {
  font-size: 0.9rem;
  color: #374151;
  font-weight: 500;
}

.speed-select {
  padding: 6px 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.9rem;
  background: white;
  color: #1f2937;
  cursor: pointer;
  transition: border-color 0.2s;
}

.speed-select:hover {
  border-color: #9ca3af;
}

.speed-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.audio-slider-container {
  width: 100%;
}

.audio-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #e5e7eb;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.audio-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  transition: background-color 0.2s;
}

.audio-slider::-webkit-slider-thumb:hover {
  background: var(--primary-hover);
}

.audio-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: none;
  transition: background-color 0.2s;
}

.audio-slider::-moz-range-thumb:hover {
  background: var(--primary-hover);
}

.gapped-transcript {
  margin-top: 20px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-main);
  min-height: 200px;
}

.gap-input {
  display: inline-block;
  min-width: 100px;
  padding: 4px 8px;
  margin: 0 2px;
  border: 2px solid #d0d7de;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  text-align: center;
  background: var(--bg-card);
  color: var(--text-main);
}

.gap-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.gap-input:disabled {
  cursor: pointer;
  pointer-events: auto;
}

.gap-input.support-mode-active {
  border-color: #4caf50;
  background-color: #f0fdf4;
}

.gap-input.support-mode-active::placeholder {
  color: #059669;
  font-weight: 600;
  letter-spacing: 1px;
}

.gap-speaker-icon {
  display: inline-block;
  margin-left: 4px;
  cursor: pointer;
  font-size: 1rem;
  vertical-align: middle;
  opacity: 0.7;
  transition: opacity 0.2s, transform 0.2s;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.gap-speaker-icon:hover {
  opacity: 1;
  transform: scale(1.1);
}

.gap-speaker-icon.icon-speaking {
  opacity: 1;
  transform: scale(1.2);
  filter: brightness(1.2);
}

/* Fill Phrases Section */
.fill-phrases-section {
  margin-top: 30px;
  padding: 20px;
  background: #f9fafb;
  border: 1px solid var(--border-light);
  border-radius: 8px;
}

.fill-phrases-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.fill-phrases-header h3 {
  margin: 0;
  font-size: 1.2rem;
  color: #1f2937;
}

.phrase-options {
  display: flex;
  gap: 16px;
  align-items: center;
}

.phrase-options label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.95rem;
  color: #374151;
}

.phrase-options input[type="radio"] {
  cursor: pointer;
}

.phrases-transcript {
  margin-top: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-main);
  min-height: 150px;
}

.phrase-input {
  display: inline-block;
  min-width: 150px;
  width: auto;
  padding: 4px 8px;
  margin: 0 2px;
  border: 2px solid #d0d7de;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  text-align: center;
  background: var(--bg-card);
  color: var(--text-main);
}

.phrase-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.phrase-input:disabled {
  cursor: not-allowed;
}

.phrase-input.support-mode-active {
  border-color: #4caf50;
  background-color: #f0fdf4;
}

.phrase-input.support-mode-active::placeholder {
  color: #059669;
  font-weight: 600;
  letter-spacing: 1px;
}

.phrase-controls {
  margin-top: 16px;
  display: flex;
  gap: 12px;
}

/* Video Mode Styles */
.video-url-container {
  margin-bottom: 20px;
}

.url-input-group {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.url-input {
  flex: 1;
  padding: 10px 12px;
  border: 2px solid #d0d7de;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}

.url-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.insert-url-btn {
  padding: 10px 20px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s ease;
  white-space: nowrap;
}

.insert-url-btn:hover {
  background: var(--primary-hover);
}

.video-container {
  margin-top: 20px;
}

.youtube-player {
  position: relative;
  padding-bottom: 56.25%;
  /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  background: #000;
  margin-bottom: 20px;
}

.youtube-player iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.transcript-container {
  padding: 16px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 8px;
}

.transcript-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.transcript-header span {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-main);
}

.toggle-transcript-btn {
  padding: 6px 12px;
  background: #6b7280;
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.toggle-transcript-btn:hover {
  background: #4b5563;
}

.transcript-content {
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-main);
  max-height: 400px;
  overflow-y: auto;
}

/* ============================================
   Authentication UI Styles
   ============================================ */

/* ============================================
   Right-Side Account Panel
   ============================================ */

.account-panel-side {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  align-items: center;
}

/* Responsive: Adjust panels on small screens */
@media (max-width: 768px) {
  .account-panel-content {
    width: 280px;
  }

  .progress-panel-content {
    width: 320px;
  }

  .progress-panel-side.expanded .progress-panel-toggle {
    left: 320px;
  }

  .tier-counts {
    gap: 6px;
  }

  .tier-count {
    padding: 10px 6px;
  }

  .tier-count-number {
    font-size: 1.3rem;
  }

  .tier-count-label {
    font-size: 0.65rem;
  }

  .entry-modal-content {
    padding: 24px;
  }

  .entry-btn {
    padding: 20px;
  }

  /* Pie chart responsive adjustments */
  .distribution-pie-chart {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .pie-chart-container {
    width: 100px;
    height: 100px;
  }

  .pie-total-number {
    font-size: 1.1rem;
  }

  .pie-chart-legend {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .progress-panel-content {
    width: 100vw;
  }

  .progress-panel-side.expanded .progress-panel-toggle {
    display: none;
  }

  .pie-chart-container {
    width: 90px;
    height: 90px;
  }

  .pie-legend-item {
    font-size: 0.75rem;
  }

  .pie-legend-value {
    font-size: 0.7rem;
  }
}

/* Toggle Button (Always Visible) */
.account-panel-toggle {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 8px 0 0 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  margin-right: 0;
}

.account-panel-toggle:hover {
  background: var(--primary-hover);
  box-shadow: -2px 0 12px rgba(0, 0, 0, 0.15);
}

.toggle-icon {
  display: block;
}

/* Panel Content (Expanded State) */
.account-panel-content {
  background: var(--bg-card);
  width: 320px;
  min-height: 200px;
  max-height: calc(100vh - 40px);
  border-radius: 8px 0 0 8px;
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.15);
  display: none;
  flex-direction: column;
  overflow-y: auto;
  margin-right: 0;
}

.account-panel-side.expanded .account-panel-content {
  display: flex;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid #e5e7eb;
}

.panel-header h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--text-main);
}

.panel-close-btn {
  background: transparent;
  border: none;
  font-size: 24px;
  color: #6b7280;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.panel-close-btn:hover {
  background: #f3f4f6;
  color: var(--text-main);
}

.panel-section {
  padding: 20px;
  flex: 1;
}

.panel-status {
  font-size: 0.9rem;
  color: #6b7280;
  margin: 0 0 16px 0;
  font-weight: 600;
}

.panel-user-info {
  margin-bottom: 20px;
}

.panel-email-label {
  font-size: 0.85rem;
  color: #6b7280;
  margin: 0 0 4px 0;
  font-weight: 600;
}

.panel-email {
  font-size: 0.95rem;
  color: var(--text-main);
  margin: 0;
  word-break: break-word;
}

.panel-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel-btn {
  width: 100%;
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.panel-btn.primary {
  background: var(--primary);
  color: #ffffff;
}

.panel-btn.primary:hover {
  background: var(--primary-hover);
}

.panel-btn.secondary {
  background: #f3f4f6;
  color: var(--text-main);
}

.panel-btn.secondary:hover {
  background: #e5e7eb;
}

.panel-btn.danger {
  background: #dc2626;
  color: #ffffff;
}

.panel-btn.danger:hover {
  background: #b91c1c;
}

.panel-guest-info,
.panel-guest-note {
  font-size: 0.85rem;
  color: #6b7280;
  margin: 12px 0 0 0;
  text-align: center;
  font-style: italic;
}

/* ============================================
   Entry Choice Modal (First Visit)
   ============================================*/



/* Add CSS for the Start Review Card */
.dashboard-cta-card {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  padding: 24px;
  border-radius: 16px;
  margin: 20px 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.2s;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.dashboard-cta-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.dashboard-cta-content h3 {
  margin: 0;
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.dashboard-cta-content p {
  margin: 0;
  opacity: 0.9;
}

.dashboard-cta-icon {
  font-size: 2.5rem;
}

/* Vocabulary List Modal (Full View) */
.vocab-list-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* Match stats panel overlay style */
  background-color: rgba(255, 255, 255, 0.4);
  z-index: 1002 !important;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  /* Animation */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}


.entry-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(4px);
}

.entry-modal-content {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 40px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.entry-modal-content h2 {
  margin: 0 0 12px 0;
  font-size: 1.75rem;
  color: var(--text-main);
}

.entry-modal-content>p {
  margin: 0 0 32px 0;
  font-size: 1rem;
  color: #6b7280;
}

.entry-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.entry-btn {
  width: 100%;
  padding: 24px;
  background: var(--bg-card);
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.entry-btn:hover {
  border-color: var(--primary);
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.entry-btn.guest-btn:hover {
  border-color: #6b7280;
  box-shadow: 0 4px 12px rgba(107, 114, 128, 0.15);
}

.entry-icon {
  font-size: 32px;
  display: block;
}

.entry-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}

.entry-desc {
  font-size: 0.9rem;
  color: #6b7280;
}

/* ============================================
   Guest Mode Toast Notification
   ============================================ */

.guest-toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #1f2933;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  z-index: 1500;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 500px;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.toast-icon {
  font-size: 18px;
}

.toast-message {
  flex: 1;
  font-size: 0.9rem;
}

.toast-close {
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 20px;
  cursor: pointer;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s ease;
  padding: 0;
}

.toast-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Final Cleanup of old animation names if any */

/* ============================================
   Mastery Status UI
   ============================================ */

.mastery-status {
  margin-top: 8px;
  padding: 8px 12px;
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mastery-indicator {
  color: #15803d;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.remove-mastery-btn {
  padding: 4px 12px;
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.remove-mastery-btn:hover {
  background: #fecaca;
  border-color: #f87171;
}

/* ============================================
   Question Select Dropdown Enhancements
   ============================================ */

.question-select-wrapper {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hide-mastered-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: #6b7280;
  cursor: pointer;
  user-select: none;
}

.hide-mastered-checkbox:hover {
  color: var(--text-main);
}

.hide-mastered-input {
  cursor: pointer;
}

/* Mastery indicator in dropdown options */
.question-select option.mastered {
  color: #15803d;
  font-weight: 600;
}

.question-select option.mastered::before {
  content: "✅ ";
}

/* ============================================
   Question Navigation Wrapper (Back/Next buttons)
   ============================================ */

/* Navigation Row: Back + Dropdown + Next */
.question-nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: 480px;
  margin: 0 auto 12px;
}

.question-select.question-select-narrow {
  flex: 1;
  min-width: 120px;
  max-width: 280px;
}

/* Filters Row: Status + Length side by side */
.question-filters-row {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

/* Navigation Buttons */
.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-btn-back {
  background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
  color: white;
  box-shadow: 0 2px 6px rgba(75, 85, 99, 0.3);
}

.nav-btn-back:hover {
  background: linear-gradient(135deg, #4b5563 0%, #374151 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(75, 85, 99, 0.4);
}

.nav-btn-back:active {
  transform: translateY(0);
}

.nav-btn-next {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  box-shadow: 0 2px 6px rgba(124, 58, 237, 0.3);
}

.nav-btn-next:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(124, 58, 237, 0.4);
}

.nav-btn-next:active {
  transform: translateY(0);
}

.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============================================
   Left-Side Progress Panel (Fixed Drawer)
   Uses transform for slide-in animation
   ============================================ */

/* Toggle Button - Fixed on left edge, always visible */
.progress-panel-toggle {
  position: fixed;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  z-index: 1001;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: #ffffff;
  border: none;
  border-radius: 0 8px 8px 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
  transition: left 0.3s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.progress-panel-toggle:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  box-shadow: 3px 0 12px rgba(0, 0, 0, 0.2);
}

.progress-panel-toggle .toggle-icon {
  font-size: 1.3rem;
}

/* When panel is open, move toggle button to the right of the panel */
.progress-panel-side.expanded .progress-panel-toggle {
  left: 420px;
  border-radius: 0 8px 8px 0;
}

/* Panel Drawer - Off-screen by default, slides in */
.progress-panel-content {
  position: fixed;
  top: 0;
  left: 0;
  width: 420px;
  height: 100vh;
  background: var(--bg-card);
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

/* When expanded, slide panel into view */
.progress-panel-side.expanded .progress-panel-content {
  transform: translateX(0);
}

/* Panel Header */
.progress-panel-content .panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid #e5e7eb;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  flex-shrink: 0;
}

.progress-panel-content .panel-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.progress-panel-content .panel-close-btn {
  width: 32px;
  height: 32px;
  background: #f3f4f6;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 1.2rem;
  color: #6b7280;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.progress-panel-content .panel-close-btn:hover {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #dc2626;
}

/* Container div - just for grouping, no styles needed */

/* Progress Panel Sections */
.progress-panel-content .panel-section {
  padding: 16px 20px;
  border-bottom: 1px solid #f3f4f6;
}

.progress-panel-content .panel-section:last-child {
  border-bottom: none;
}

/* Mode Indicator */
.progress-mode-indicator {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  padding: 14px 24px;
  margin: 0;
  text-align: center;
  border-bottom: 1px solid #bfdbfe;
}

.progress-mode-indicator span {
  font-weight: 700;
  color: #1d4ed8;
  font-size: 1.05rem;
  letter-spacing: 0.3px;
}

/* Section Headers */
.progress-summary h4,
.tier-distribution h4,
.next-goal h4,
.recent-progress h4 {
  margin: 0 0 14px 0;
  font-size: 0.8rem;
  color: #9ca3af;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
}

/* Progress Summary (Tier Counts) */
.progress-summary {
  padding: 20px 24px;
}

.tier-counts {
  display: flex;
  gap: 12px;
}

.tier-count {
  flex: 1;
  text-align: center;
  padding: 16px 12px;
  border-radius: 10px;
}

.tier-count.completed-count {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

.tier-count.consolidated-count {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
}

.tier-count.mastered-count {
  background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
}

.tier-count-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.tier-count-label {
  font-size: 0.75rem;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 4px;
}

/* Tier Distribution Bar */
.tier-distribution {
  padding: 16px 24px;
}

.tier-bar {
  height: 16px;
  background: #e5e7eb;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
}

.tier-bar-segment {
  height: 100%;
  transition: width 0.4s ease;
}

.tier-bar-segment.completed {
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
}

.tier-bar-segment.consolidated {
  background: linear-gradient(90deg, #60a5fa, #3b82f6);
}

.tier-bar-segment.mastered {
  background: linear-gradient(90deg, #4ade80, #22c55e);
}

.tier-bar-legend {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.tier-bar-legend .legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #6b7280;
  font-size: 0.8rem;
}

.tier-bar-legend .legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.tier-bar-legend .legend-dot.completed {
  background: #f59e0b;
}

.tier-bar-legend .legend-dot.consolidated {
  background: #3b82f6;
}

.tier-bar-legend .legend-dot.mastered {
  background: #22c55e;
}

/* Additional tier bar segments for Not Started and In Progress */
.tier-bar-segment.not-started {
  background: linear-gradient(90deg, #9ca3af, #6b7280);
}

.tier-bar-segment.in-progress {
  background: linear-gradient(90deg, #a78bfa, #7c3aed);
}

/* ============================================
   Distribution Pie Chart
   ============================================ */

.distribution-pie-chart {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #f3f4f6;
}

.pie-chart-container {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}

.pie-chart-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.pie-chart-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pie-total-number {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

.pie-total-label {
  font-size: 0.65rem;
  color: #9ca3af;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Pie Chart Legend */
.pie-chart-legend {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pie-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
}

.pie-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.pie-legend-dot.not-started {
  background: #6b7280;
}

.pie-legend-dot.in-progress {
  background: #7c3aed;
}

.pie-legend-dot.completed {
  background: #f59e0b;
}

.pie-legend-dot.consolidated {
  background: #3b82f6;
}

.pie-legend-dot.mastered {
  background: #22c55e;
}

.pie-legend-label {
  flex: 1;
  color: #4b5563;
}

.pie-legend-value {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.75rem;
  white-space: nowrap;
}

/* Next Goal */
.next-goal {
  padding: 16px 24px;
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  margin: 0;
}

.next-goal-text {
  margin: 0;
  font-size: 0.95rem;
  color: #166534;
  line-height: 1.5;
}

/* Recent Progress */
.recent-progress {
  padding: 16px 24px 20px;
}

.recent-progress-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 180px;
  overflow-y: auto;
}

.recent-progress-list li {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.recent-progress-list li.no-progress {
  color: #9ca3af;
  font-style: italic;
  padding: 12px 0;
}

.recent-progress-list li:not(.no-progress) {
  background: #f8fafc;
  border: 1px solid var(--border-light);
}

.recent-tier-badge {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.recent-tier-badge.completed {
  background: #fef3c7;
  color: #92400e;
}

.recent-tier-badge.consolidated {
  background: #dbeafe;
  color: #1e40af;
}

.recent-tier-badge.mastered {
  background: #dcfce7;
  color: #166534;
}

/* Guest Notice - NEW PROMINENT OVERLAY STYLE */
.progress-guest-notice {
  display: none;
  position: absolute;
  top: 60px;
  /* Below header */
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2px);
}

.progress-guest-notice .guest-notice-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  padding: 32px 24px;
  max-width: 280px;
}

.progress-guest-notice .guest-notice-icon {
  display: block;
  font-size: 3rem;
  margin-bottom: 16px;
  line-height: 1;
}

.progress-guest-notice p {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

/* Progress Content Wrapper - Blurred when guest */
.progress-content-wrapper {
  position: relative;
  flex: 1;
  overflow-y: auto;
}

/* When guest notice is shown, blur the content wrapper */
.progress-panel-content.guest-mode .progress-content-wrapper {
  filter: blur(4px);
  pointer-events: none;
  user-select: none;
}

/* Click-outside overlay when panel is open */
.progress-panel-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.2);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.progress-panel-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   Progress Bar (Question Header)
   ============================================ */

.progress-bar-container {
  margin: 12px 0;
  padding: 12px;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 8px;
}

.progress-bar-track {
  height: 8px;
  background: #94a3b8;
  /* Darker track */
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #60a5fa, #3b82f6);
  border-radius: 4px;
  transition: width 0.4s ease, background 0.3s ease;
}

.progress-bar-fill.state-not-started {
  background: #e5e7eb;
}

.progress-bar-fill.state-in-progress {
  background: linear-gradient(90deg, #a78bfa, #7c3aed);
}

.progress-bar-fill.state-completed,
.progress-bar-fill.tier-completed {
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
}

.progress-bar-fill.state-consolidated,
.progress-bar-fill.tier-consolidated {
  background: linear-gradient(90deg, #60a5fa, #3b82f6);
}

.progress-bar-fill.state-mastered,
.progress-bar-fill.tier-mastered {
  background: linear-gradient(90deg, #4ade80, #22c55e);
}

.progress-bar-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-size: 0.75rem;
  color: #6b7280;
}

.progress-label {
  flex: 1;
  text-align: center;
}

.progress-label:first-child {
  text-align: left;
}

.progress-label:last-child {
  text-align: right;
}

.progress-target {
  font-weight: 600;
  color: var(--primary);
}

.progress-tier-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.progress-tier-badge {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

.progress-tier-badge.tier-none,
.progress-tier-badge.state-not-started {
  background: #f3f4f6;
  color: #6b7280;
}

.progress-tier-badge.state-in-progress {
  background: #ede9fe;
  color: #6d28d9;
}

.progress-tier-badge.tier-completed,
.progress-tier-badge.state-completed {
  background: #fef3c7;
  color: #92400e;
}

.progress-tier-badge.tier-consolidated,
.progress-tier-badge.state-consolidated {
  background: #dbeafe;
  color: #1e40af;
}

.progress-tier-badge.tier-mastered,
.progress-tier-badge.state-mastered {
  background: #dcfce7;
  color: #166534;
}

.reset-progress-btn {
  padding: 4px 10px;
  background: #fee2e2;
  border: 1px solid #fca5a5;
  border-radius: 6px;
  color: #dc2626;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.reset-progress-btn:hover {
  background: #fecaca;
  border-color: #f87171;
}

/* ============================================
   Tier Filter Dropdown
   ============================================ */

.tier-filter-dropdown {
  position: relative;
  margin-top: 8px;
}

.tier-filter-btn {
  width: 100%;
  padding: 8px 12px;
  background: #f8fafc;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: #6b7280;
  transition: all 0.2s ease;
}

.tier-filter-btn:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.filter-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.tier-filter-dropdown.open .filter-arrow {
  transform: rotate(180deg);
}

.tier-filter-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid #d0d7de;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 100;
  margin-top: 4px;
  padding: 8px;
}

/* ============================================
   Unified Filter Dropdown Styles
   ============================================ */

/* Status Filter Button (same style as Length Filter) */
.status-filter-dropdown {
  position: relative;
  margin-left: 10px;
}

.status-filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(124, 58, 237, 0.25);
}

.status-filter-btn:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.35);
}

.status-filter-dropdown.open .filter-arrow {
  transform: rotate(180deg);
}

.status-filter-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 100;
  margin-top: 6px;
  padding: 8px;
  animation: dropdownFadeIn 0.2s ease-out;
}

/* Unified Filter Option - Highlighting Style */
.filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.9rem;
  color: #374151;
}

.filter-option:hover {
  background: #f3f4f6;
}

/* Selected state - bold and underlined */
.filter-option.selected {
  background: transparent;
  color: #374151;
  font-weight: 700;
}

.filter-option.selected:hover {
  background: #f3f4f6;
}

.filter-option.selected .filter-option-text {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.filter-option.selected .filter-option-icon,
.filter-option.selected .filter-option-text {
  color: #374151;
}

.filter-option-icon {
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

.filter-option-text {
  flex: 1;
}

/* Length tags */
.length-tag {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  margin-left: 6px;
}

.length-tag.short {
  background: rgba(255, 255, 255, 0.3);
  color: inherit;
}

.length-tag.long {
  background: rgba(255, 255, 255, 0.3);
  color: inherit;
}

.filter-option:not(.selected) .length-tag.short {
  background: #dcfce7;
  color: #166534;
}

.filter-option:not(.selected) .length-tag.long {
  background: #fef3c7;
  color: #92400e;
}

/* Legacy tier filter styles (kept for compatibility)  */
.tier-filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.tier-filter-option:hover {
  background: #f8fafc;
}

.tier-filter-option input[type="checkbox"] {
  cursor: pointer;
}

.tier-checkbox-label {
  font-size: 0.85rem;
  font-weight: 500;
}

.tier-checkbox-label.completed {
  color: #92400e;
}

.tier-checkbox-label.consolidated {
  color: #1e40af;
}

.tier-checkbox-label.mastered {
  color: #166534;
}

.tier-checkbox-label.none,
.tier-checkbox-label.not-started {
  color: #6b7280;
}

.tier-checkbox-label.in-progress {
  color: #7c3aed;
}

/* Question select with state indicators */
.question-select option.state-not-started {
  color: #6b7280;
}

.question-select option.state-in-progress {
  color: #7c3aed;
}

.question-select option.state-completed {
  color: #92400e;
}

.question-select option.state-consolidated {
  color: #1e40af;
}

.question-select option.state-mastered {
  color: #166534;
}

/* Auth overlay (modal) */
.auth-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.auth-container {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 32px;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-form h2 {
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 1.5rem;
  color: var(--text-main);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid #d0d7de;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  box-sizing: border-box;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.auth-btn {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-bottom: 16px;
}

.auth-btn:hover {
  background: var(--primary-hover);
}

.auth-btn:active {
  background: #1e40af;
}

.auth-error {
  padding: 12px;
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.auth-success {
  padding: 12px;
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.auth-switch {
  text-align: center;
  margin: 0;
  font-size: 0.9rem;
  color: #6b7280;
}

.auth-switch a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.auth-switch a:hover {
  text-decoration: underline;
}

/* Account Details Modal (Full Details) */
.account-details-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.account-details-content {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 32px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  position: relative;
}

.details-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.details-header h2 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--text-main);
}

.account-container h2 {
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 1.5rem;
  color: var(--text-main);
}

.account-info {
  margin-bottom: 24px;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #e5e7eb;
}

.info-item:last-child {
  border-bottom: none;
}

.info-item label {
  font-weight: 600;
  color: #6b7280;
  font-size: 0.9rem;
}

.info-item .read-only {
  color: var(--text-main);
  font-size: 0.95rem;
  text-align: right;
}

.account-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.account-btn {
  flex: 1;
  padding: 10px 16px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.account-btn:hover {
  background: var(--primary-hover);
}

.account-btn.logout-btn {
  background: #dc2626;
}

.account-btn.logout-btn:hover {
  background: #b91c1c;
}

.close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  font-size: 24px;
  color: #6b7280;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

.close-btn:hover {
  background: #f3f4f6;
  color: var(--text-main);
}

/* ============================================
   Practice Points Display (Account Panel)
   ============================================ */

.panel-points {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 1px solid #fbbf24;
  border-radius: 10px;
  padding: 16px;
  margin: 16px 0;
  text-align: center;
}

.points-label {
  font-size: 0.75rem;
  color: #92400e;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: 8px;
}

.points-value {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.points-icon {
  font-size: 1.5rem;
}

#panel-points-count {
  font-size: 2rem;
  font-weight: 800;
  color: #78350f;
  line-height: 1;
}

/* ============================================
   Points Toast Notification
   ============================================ */

.points-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.points-toast {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #fbbf24;
  border-left: 5px solid #f59e0b;
  border-radius: 8px;
  padding: 12px 16px;
  min-width: 250px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: auto;
  animation: slideInRight 0.3s ease-out forwards;
  backdrop-filter: blur(8px);
}

.points-toast.hiding {
  animation: fadeOutRight 0.3s ease-in forwards;
}

.toast-content {
  display: flex;
  flex-direction: column;
}

.toast-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-main);
}

.toast-points {
  font-size: 1.1rem;
  font-weight: 800;
  color: #d97706;
}

.toast-icon {
  font-size: 1.5rem;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }

  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ============================================
   New Points & History Section (Account Panel)
   ============================================ */

.panel-points-section {
  margin-top: 24px;
  border-top: 1px solid #e5e7eb;
  padding-top: 20px;
}

/* Shopping Card in Panel */
.panel-shopping-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.panel-shopping-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-color: #7dd3fc;
}

.panel-shopping-card:active {
  transform: translateY(0);
}

.shopping-icon {
  font-size: 1.5rem;
}

.shopping-label {
  flex: 1;
  font-weight: 600;
  color: #0369a1;
  font-size: 0.95rem;
}

.shopping-arrow {
  color: #0ea5e9;
  font-weight: bold;
  font-size: 1.2rem;
}

.panel-points-header {
  text-align: center;
  margin-bottom: 20px;
}

.points-value-large {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 2.5rem;
  font-weight: 800;
  color: #d97706;
  /* Amber-600 */
}

.points-value-large .points-icon {
  font-size: 2rem;
}

.panel-history {
  background: #f9fafb;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  padding: 12px;
}

.panel-history h4 {
  margin: 0 0 10px 0;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: #6b7280;
  letter-spacing: 0.5px;
}

.points-history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.history-item:hover {
  border-color: #fbbf24;
  background: #fffbeb;
  transform: translateX(2px);
}

.history-info {
  display: flex;
  flex-direction: column;
}

.history-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: #374151;
}

.history-time {
  font-size: 0.7rem;
  color: #9ca3af;
}

.history-points {
  font-weight: 700;
  color: #d97706;
  font-size: 0.9rem;
}

.history-empty {
  text-align: center;
  color: #9ca3af;
  padding: 12px;
  font-size: 0.9rem;
  font-style: italic;
}

#hint-starter .hint-value {
  font-style: italic;
  font-weight: 500;
  color: #2563EB;
}

.srs-writing-instruction {
  font-size: 0.95rem;
  color: #6B7280;
  margin-bottom: 8px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Gamification Styles */
.srs-level-info {
  display: flex;
  align-items: center;
  gap: 12px;
  background: white;
  padding: 4px 12px;
  border-radius: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.level-badge {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 10px;
  border-radius: 12px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.xp-progress-container {
  width: 140px;
  height: 10px;
  background: #94a3b8;
  /* Darker track for contrast */
  border-radius: var(--radius-pill);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.xp-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Confetti / Reward Animations */
@keyframes pop-scale {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.2);
  }

  100% {
    transform: scale(1);
  }
}

.level-up-anim {
  animation: pop-scale 0.4s ease-in-out;
}

.history-empty {
  text-align: center;
  font-size: 0.8rem;
  color: #9ca3af;
  padding: 10px;
  font-style: italic;
}

/* ============================================
   Explanation Modal
   ============================================ */

.explanation-content {
  max-width: 400px;
  text-align: center;
  border-top: 6px solid #fbbf24;
}

.explanation-points {
  font-size: 3rem;
  color: #d97706;
  margin: 16px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
}

#explanation-text {
  color: #4b5563;
  line-height: 1.5;
  margin-bottom: 24px;
}

/* ============================================
   Points Toast Notification
   ============================================ */

.points-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column-reverse;
  /* Stack upwards */
  gap: 12px;
  pointer-events: none;
}

.points-toast {
  background: white;
  border-left: 5px solid #fbbf24;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
  max-width: 320px;
  animation: slideInRight 0.3s ease-out;
  pointer-events: auto;
  transition: all 0.3s ease;
}

.toast-content {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.toast-title {
  font-weight: 700;
  color: var(--text-main);
  font-size: 0.9rem;
}

.toast-points {
  color: #d97706;
  font-size: 0.85rem;
  font-weight: 600;
}

.toast-icon {
  font-size: 1.5rem;
}

.points-toast.hiding {
  opacity: 0;
  transform: translateX(20px);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ============================================
   Shopping Modal - Redesigned
   ============================================ */

.shopping-modal-content {
  text-align: center;
  padding: 40px 48px !important;
  max-width: 580px;
  border-top: 6px solid #8b5cf6;
  background: linear-gradient(180deg, #faf5ff 0%, #ffffff 100%);
}

.shopping-header {
  margin-bottom: 32px;
}

.shopping-icon {
  font-size: 4rem;
  margin-bottom: 12px;
}

.shopping-modal-content h2 {
  margin: 0 0 20px 0;
  color: #5b21b6;
  font-size: 1.75rem;
  font-weight: 700;
}

.shopping-points-display {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 2px solid #fbbf24;
  border-radius: 16px;
  padding: 16px 32px;
  box-shadow: 0 2px 8px rgba(251, 191, 36, 0.2);
}

.shopping-points-display .points-icon {
  font-size: 1.75rem;
}

.shopping-points-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: #92400e;
}

.shopping-points-label {
  font-size: 0.85rem;
  color: #78350f;
  font-weight: 600;
}

/* Feedback Messages */
.shopping-feedback {
  padding: 14px 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-weight: 600;
  font-size: 0.95rem;
}

.shopping-feedback.success {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #86efac;
}

.shopping-feedback.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.shopping-feedback.info {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #93c5fd;
}

/* Bottom Close Button for Modals */
.modal-close-bottom-btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  margin-top: 24px;
  background: var(--bg-card);
  color: #374151;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-close-bottom-btn:hover {
  background: #f9fafb;
  border-color: #d1d5db;
}

.modal-close-bottom-btn:active {
  background: #f3f4f6;
}

/* Rewards Table */
.shopping-table-container {
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.shopping-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.shopping-table thead {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
}

.shopping-table th {
  padding: 18px 20px;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.shopping-table th:last-child {
  text-align: center;
}

.shopping-table tbody tr {
  background: white;
  border-bottom: 1px solid #f3f4f6;
  transition: background 0.2s ease;
}

.shopping-table tbody tr:hover {
  background: #faf5ff;
}

.shopping-table tbody tr:last-child {
  border-bottom: none;
}

.shopping-table td {
  padding: 24px 20px;
  vertical-align: middle;
}

.shopping-table td:nth-child(2) {
  text-align: center;
}

.reward-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.reward-title {
  font-weight: 600;
  color: #1f2937;
  font-size: 1rem;
}

.reward-description {
  font-size: 0.85rem;
  color: #6b7280;
  line-height: 1.4;
}

.reward-cost {
  font-weight: 700;
  color: #7c3aed;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.reward-cost .cost-icon {
  font-size: 1rem;
}

/* Unlock Button */
.shopping-unlock-btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 130px;
}

.shopping-unlock-btn.available {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  box-shadow: 0 2px 6px rgba(124, 58, 237, 0.25);
}

.shopping-unlock-btn.available:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.35);
}

.shopping-unlock-btn.processing {
  background: #e5e7eb;
  color: #6b7280;
  cursor: wait;
}

.shopping-unlock-btn.unlocked {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: white;
  cursor: default;
  box-shadow: 0 2px 6px rgba(34, 197, 94, 0.25);
}

.shopping-unlock-btn.insufficient {
  background: #fef3c7;
  color: #92400e;
  border: 2px solid #fbbf24;
  cursor: not-allowed;
}

.unlocked-timestamp {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  margin-top: 4px;
  opacity: 0.9;
}

/* Tutorial Button in Shopping Table */
.shopping-tutorial-btn {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.shopping-tutorial-btn:hover {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3);
}

.shopping-tutorial-btn:disabled {
  background: #e5e7eb;
  color: #9ca3af;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.shopping-tutorial-btn .btn-icon {
  font-size: 1rem;
}

/* ============================================
   Modern Control Buttons
   ============================================ */

.modern-btn {
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.modern-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.modern-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Play Button - Blue */
.modern-btn--play {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
}

.modern-btn--play:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

/* Check Button - Green */
.modern-btn--check {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: white;
}

.modern-btn--check:hover {
  background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
}

/* Retry Button - Orange/Amber */
.modern-btn--retry {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
}

.modern-btn--retry:hover {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
}

/* Record Button - Red/Pink */
.modern-btn--record {
  background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
  color: white;
}

.modern-btn--record:hover {
  background: linear-gradient(135deg, #e11d48 0%, #be123c 100%);
}

.modern-btn--record.recording {
  background: linear-gradient(135deg, #be123c 0%, #9f1239 100%);
  animation: pulse 1.5s infinite;
}

/* Hint Button - Light/Outline */
.modern-btn--hint {
  background: #f8fafc;
  color: #475569;
  border: 1px solid #cbd5e1;
}

.modern-btn--hint:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

/* ============================================
   Grammar Warning Modal
   ============================================ */

.grammar-warning-content {
  text-align: center;
  padding: 32px !important;
  max-width: 420px;
  border-top: 6px solid #f59e0b;
}

.grammar-warning-icon {
  font-size: 3.5rem;
  margin-bottom: 12px;
}

.grammar-warning-content h2 {
  margin-top: 0;
  margin-bottom: 16px;
  color: #92400e;
}

.grammar-warning-list {
  text-align: left;
  list-style: none;
  padding: 0;
  margin: 0 0 16px 0;
}

.grammar-warning-list li {
  background: #fef3c7;
  border: 1px solid #fcd34d;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 10px;
  color: #78350f;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.grammar-warning-list li:last-child {
  margin-bottom: 0;
}

.grammar-warning-list .warning-bullet {
  font-size: 1.2rem;
}

/* ============================================
   Length Filter Dropdown (matches Status Filter)
   ============================================ */

.length-filter-dropdown {
  position: relative;
  margin-left: 10px;
}

.length-filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(124, 58, 237, 0.25);
}

.length-filter-btn:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.35);
}

.length-filter-btn .filter-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.length-filter-dropdown.open .length-filter-btn .filter-arrow {
  transform: rotate(180deg);
}

.length-filter-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 100;
  margin-top: 6px;
  padding: 8px;
  animation: dropdownFadeIn 0.2s ease-out;
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.length-filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.length-filter-option:hover {
  background: #f3f4f6;
}

.length-filter-option input[type="radio"] {
  cursor: pointer;
  accent-color: #7c3aed;
}

.length-option-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: #374151;
  display: flex;
  align-items: center;
  gap: 8px;
}

.length-tag {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
}

.length-option-label.short .length-tag {
  background: #dcfce7;
  color: #166534;
}

.length-option-label.long .length-tag {
  background: #fef3c7;
  color: #92400e;
}

/* ============================================
   Interactive Tutorial Overlay
   ============================================ */

/* ============================================
   Difficulty Filter Dropdown (matches Length Filter)
   ============================================ */

.difficulty-filter-dropdown {
  position: relative;
  margin-left: 10px;
}

#difficulty-filter-container-extended.difficulty-filter-dropdown {
  margin-left: 0;
}

.difficulty-filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(6, 182, 212, 0.25);
}

.difficulty-filter-btn:hover {
  background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.35);
}

.difficulty-filter-btn .filter-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.difficulty-filter-dropdown.open .difficulty-filter-btn .filter-arrow {
  transform: rotate(180deg);
}

.difficulty-filter-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  min-width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 100;
  margin-top: 6px;
  padding: 8px;
  animation: dropdownFadeIn 0.2s ease-out;
}

.difficulty-tag {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
}

.difficulty-tag.easy {
  background: #dcfce7;
  color: #166534;
}

.difficulty-tag.medium {
  background: #fef3c7;
  color: #92400e;
}

.difficulty-tag.hard {
  background: #fee2e2;
  color: #991b1b;
}


.tutorial-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  pointer-events: auto;
  opacity: 0;
  transition: opacity 1s ease;
}

.tutorial-overlay.active {
  opacity: 1;
}

.tutorial-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 0.3s ease;
}

.tutorial-spotlight {
  position: absolute;
  border-radius: 12px;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.65);
  transition: opacity 1.5s ease;
  pointer-events: none;
  z-index: 20001;
}

.tutorial-spotlight.pulse {
  animation: spotlightPulse 2s infinite;
}

@keyframes spotlightPulse {

  0%,
  100% {
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.65), 0 0 0 4px rgba(139, 92, 246, 0.4);
  }

  50% {
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.65), 0 0 0 10px rgba(139, 92, 246, 0.4);
  }
}

.tutorial-tooltip {
  position: absolute;
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border-radius: 16px;
  padding: 24px;
  max-width: 360px;
  width: calc(100% - 40px);
  /* Responsive width with padding */
  box-sizing: border-box;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(148, 163, 184, 0.1);
  color: #f1f5f9;
  z-index: 20002;
  animation: tooltipEntrance 0.3s ease-out;
}

@keyframes tooltipEntrance {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.tutorial-tooltip::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #1e293b;
  transform: rotate(45deg);
  z-index: -1;
}

.tutorial-tooltip.arrow-top::before {
  top: -8px;
  left: var(--arrow-left, 50%);
  margin-left: -8px;
}

.tutorial-tooltip.arrow-bottom::before {
  bottom: -8px;
  left: var(--arrow-left, 50%);
  margin-left: -8px;
}

.tutorial-tooltip.arrow-left::before {
  left: -8px;
  top: 50%;
  margin-top: -8px;
}

.tutorial-tooltip.arrow-right::before {
  right: -8px;
  top: 50%;
  margin-top: -8px;
}

.tutorial-tooltip.center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.tutorial-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.tutorial-icon {
  font-size: 2rem;
}

.tutorial-header h3 {
  margin: 0;
  font-size: 1.25rem;
  color: #ffffff;
  font-weight: 700;
}

.tutorial-text {
  color: #94a3b8;
  line-height: 1.6;
  margin: 0 0 20px 0;
  font-size: 0.95rem;
}

.tutorial-text strong {
  color: #818cf8;
  font-weight: 600;
}

.tutorial-subtle {
  margin-top: 10px;
  font-size: 0.88rem;
  color: rgba(148, 163, 184, 0.92);
}

.tutorial-media {
  margin: 12px 0 10px;
}

.tutorial-media-img {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(15, 23, 42, 0.35);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
}

.tutorial-media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.tutorial-media-thumb {
  display: block;
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(15, 23, 42, 0.35);
}

.tutorial-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.tutorial-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tutorial-skip-btn {
  background: transparent;
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.tutorial-skip-btn:hover {
  color: #f1f5f9;
  background: rgba(148, 163, 184, 0.1);
  border-color: rgba(148, 163, 184, 0.4);
}

.tutorial-next-btn {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: white;
  flex: 1;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.tutorial-next-btn:hover {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.tutorial-progress {
  display: flex;
  justify-content: center;
}

.tutorial-dots {
  display: flex;
  gap: 8px;
}

.tutorial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.3);
  transition: all 0.2s ease;
}

.tutorial-dot.active {
  background: #6366f1;
  width: 24px;
  border-radius: 4px;
}

.tutorial-dot.completed {
  background: #10b981;
}

/* Mobile responsiveness for general tutorial */
@media (max-width: 480px) {
  .tutorial-tooltip {
    width: calc(100vw - 32px);
    max-width: none;
    padding: 20px;
  }

  .tutorial-icon {
    font-size: 2rem;
  }

  .tutorial-header h3 {
    font-size: 1.1rem;
  }

  .tutorial-text {
    font-size: 0.9rem;
  }

  .tutorial-actions {
    flex-direction: column;
  }

  .tutorial-btn {
    width: 100%;
  }
}

/* ============================================
   Vocabulary Book Panel
   ============================================ */

.vocab-panel-side {
  position: fixed;
  left: 0;
  /* Panel Container - spans full height */
  top: 0;
  /* Full height */
  height: 100vh;
  /* Full page height */
  z-index: 3000;
  display: flex;
  align-items: flex-start;
  /* Align to top so we can manually push down */
  flex-direction: row-reverse;
  pointer-events: none;
}

.vocab-panel-toggle {
  /* Reset default button styles */
  appearance: none;
  -webkit-appearance: none;
  background: none;
  border: none;
  padding: 0;
  margin: 0;

  /* Flexbox for icon centering */
  display: flex;
  align-items: center;
  justify-content: center;

  /* Dimensions & Visuals */
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  border-radius: 0 12px 12px 0;
  cursor: pointer;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
  font-size: 1.25rem;

  /* Positioning */
  position: relative;
  /* Relative to the flex container (side panel) */
  z-index: 3002;
  /* Must be clickable */
  pointer-events: auto;

  /* Push down significantly to avoid middle and overlapping progress */
  /* If Progress is centered at 50vh, let's put this at ~65vh */
  margin-top: 65vh;
}

.vocab-panel-content {
  /* Animation properties */
  width: 0;
  padding: 0;
  opacity: 0;
  overflow-x: hidden;
  /* Allow vertical scrolling */
  overflow-y: auto;

  /* Dimensions to match Account/Stats panel */
  height: 100%;
  /* Fill parent (100vh) */
  box-sizing: border-box;

  display: flex;
  flex-direction: column;

  background: white;
  border-radius: 0 8px 8px 0;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);

  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    padding 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.2s ease;

  white-space: nowrap;
  pointer-events: auto;
}

/* ... existing styles ... */

.vocab-word-item {
  background: white;
  border: 1px solid #f1f5f9;
  border-radius: 12px;
  /* Scaled for 420px panel width */
  padding: 18px 24px;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

/* ... existing styles ... */

.vocab-scroll-list {
  /* Increase max height since panel is now taller */
  max-height: calc(100vh - 400px);
  overflow-y: auto;
  padding-right: 4px;
}

.vocab-panel-side.expanded .vocab-panel-content {
  width: 420px;
  padding: 20px;
  opacity: 1;
}

/* Ensure inner content doesn't break layout during slide */
.vocab-panel-content>* {
  min-width: 288px;
  /* 320px - 32px padding */
}

.vocab-panel-side.expanded .vocab-panel-toggle {
  border-radius: 0;
  /* Flatten left side when connected */
  box-shadow: none;
  /* Merge look */
}

/* Panel Exclusivity: Hide Vocab toggle when Progress panel is open */
.progress-panel-side.expanded~.vocab-panel-side .vocab-panel-toggle {
  opacity: 0;
  pointer-events: none;
}

/* Panel Exclusivity: Hide Progress toggle when Vocab panel is open */
.progress-panel-side:has(~ .vocab-panel-side.expanded) .progress-panel-toggle {
  opacity: 0;
  pointer-events: none;
}

.vocab-section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid #cbd5e1;
}

.vocab-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.vocab-section h4 {
  margin: 0 0 6px 0;
  padding: 10px 14px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #1e40af;
  background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
  border-radius: 8px;
  border-left: 4px solid #3b82f6;
  display: flex;
  align-items: center;
  gap: 8px;
}

.vocab-section-desc {
  margin: 0 0 14px 0;
  padding-left: 18px;
  font-size: 0.85rem;
  color: #64748b;
}


.vocab-scroll-list::-webkit-scrollbar {
  width: 6px;
}

.vocab-scroll-list::-webkit-scrollbar-thumb {
  background-color: #cbd5e1;
  border-radius: 3px;
}

.vocab-show-all-btn {
  width: 100%;
  margin-top: 10px;
  padding: 12px 16px;
  background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 50%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
  border-radius: 8px;
  color: #0369a1;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.vocab-show-all-btn:hover {
  background: linear-gradient(135deg, #bae6fd 0%, #e0f2fe 50%, #bae6fd 100%);
  border-color: #7dd3fc;
  color: #0c4a6e;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.15);
}

/* Modern Vocab Items */
.vocab-word-item {
  background: white;
  border: 1px solid #f1f5f9;
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.vocab-word-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
  border-color: #dbeafe;
}

.vocab-word-main {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.vocab-word-text {
  font-weight: 600;
  color: #1e293b;
  font-size: 1.05rem;
}

.vocab-word-badges {
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

.vocab-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 500;
}

.vocab-badge-mode {
  background-color: #f1f5f9;
  color: #64748b;
}

.vocab-badge-q {
  background-color: #eff6ff;
  color: #3b82f6;
}

.vocab-badge-miss {
  background-color: #fee2e2;
  color: #ef4444;
}

.vocab-word-streak {
  display: flex;
  align-items: center;
  gap: 4px;
}

.streak-dots {
  display: flex;
  gap: 3px;
}

.streak-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #e2e8f0;
}

.streak-dot.filled {
  background-color: #22c55e;
}

.vocab-streak-mastered .streak-dot {
  background-color: #fbbf24;
}

.vocab-word-remove {
  opacity: 0;
  transition: opacity 0.2s;
  color: #94a3b8;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
}

.vocab-word-item:hover .vocab-word-remove {
  opacity: 1;
}

.vocab-word-remove:hover {
  color: #ef4444;
  background-color: #fee2e2;
  border-radius: 4px;
}

.vocab-add-word-item input {
  margin-right: 12px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.vocab-add-word-item label {
  cursor: pointer;
  flex: 1;
  font-size: 1.1em;
}

.vocab-word-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vocab-empty {
  padding: 16px;
  text-align: center;
  color: #9ca3af;
  font-size: 0.875rem;
  background: #f8fafc;
  border-radius: 8px;
}

.vocab-word-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  font-size: 0.9rem;
}

.vocab-word-text {
  font-weight: 600;
  color: var(--text-main);
}

.vocab-word-meta {
  font-size: 0.75rem;
  color: #6b7280;
}

.vocab-word-remove {
  background: none;
  border: none;
  color: #9ca3af;
  cursor: pointer;
  font-size: 1rem;
  padding: 4px;
  transition: color 0.2s ease;
}

.vocab-word-remove:hover {
  color: #dc2626;
}

.vocab-word-streak {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: #16a34a;
}

.vocab-word-miss-count {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: #dc2626;
}

/* ============================================
   Add to Vocabulary Modal
   ============================================ */

/* ============================================
   Add to Vocabulary Modal (Redesigned Centered)
   ============================================ */

.vocab-add-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1100;
  background: rgba(15, 23, 42, 0.4);
  /* Soft midnight backdrop */
  backdrop-filter: blur(8px);
  /* Premium blur effect */
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.vocab-add-content {
  background: white;
  border-radius: 20px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  padding: 32px;
  width: 600px;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.5);
  animation: modalPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  /* Ensure content stays within border behavior */
}

@keyframes modalPop {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.vocab-add-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 2px solid #f8fafc;
  padding-bottom: 16px;
}

.vocab-add-header h4 {
  margin: 0;
  font-size: 1.4rem;
  color: #0f172a;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.vocab-add-close {
  background: #f1f5f9;
  border: none;
  font-size: 1.5rem;
  color: #64748b;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.vocab-add-close:hover {
  background: #e2e8f0;
  color: #1e293b;
  transform: rotate(90deg);
}

.vocab-add-desc {
  margin-bottom: 24px;
  font-size: 1rem;
  line-height: 1.5;
  color: #475569;
}

.vocab-add-words {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  overflow-y: auto;
  padding: 4px 12px 4px 4px;
  /* Space for shadows/scroll */
  flex: 1;
  min-height: 0;
}

/* Scrollbar Styling */
.vocab-add-words::-webkit-scrollbar {
  width: 6px;
}

.vocab-add-words::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
}

.vocab-add-words::-webkit-scrollbar-track {
  background: transparent;
}

/* Word Item: Vertical Stack */
.vocab-add-word-item {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1.5px solid #e2e8f0;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  box-sizing: border-box;
}

.vocab-add-word-item:hover {
  border-color: #3b82f6;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.vocab-add-word-item.selected {
  background: #fdf2f8;
  /* Very light pink/purple splash */
  border-color: #7c3aed;
  box-shadow: 0 0 0 1px #7c3aed;
}

/* Top Row: Word Information */
.vocab-word-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  box-sizing: border-box;
  width: 100%;
}

.vocab-add-word-item input[type="checkbox"] {
  accent-color: #7c3aed;
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.vocab-word-label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.vocab-word-label .word {
  font-weight: 800;
  color: #0f172a;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.vocab-word-label .translation {
  color: var(--primary);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.4;
}

.vocab-expand-btn {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #64748b;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.vocab-expand-btn::after {
  content: '▼';
  font-size: 0.6rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.vocab-expand-btn.active {
  background: #7c3aed;
  color: white;
  border-color: #7c3aed;
}

.vocab-expand-btn.active::after {
  transform: rotate(180deg);
}

.vocab-expand-btn:hover:not(.active) {
  background: #f1f5f9;
  color: #0f172a;
}

/* Details Section (Sentences) */
.vocab-word-details {
  padding: 20px;
  background: #f8fafc;
  border-top: 1px solid #f1f5f9;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.vocab-details-sentences {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.vocab-detail-sentence {
  background: white;
  padding: 14px 18px 14px 40px;
  /* Increased left padding for icon */
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  position: relative;
}

.vocab-detail-sentence::before {
  content: '❝';
  /* Quote mark for example context */
  position: absolute;
  left: 14px;
  /* Inside the box */
  top: 10px;
  font-size: 1.4rem;
  color: #cbd5e1;
  line-height: 1;
  font-family: serif;
  /* Classic quote look */
}

.vocab-detail-sentence .vi {
  color: #1e293b;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 6px;
}

.vocab-detail-sentence .en {
  color: #64748b;
  font-size: 0.9rem;
  font-style: italic;
  display: block;
}

.vocab-no-sentences {
  font-size: 0.95rem;
  color: #94a3b8;
  font-style: italic;
  text-align: center;
  padding: 12px;
}

/* Modal Actions */
.vocab-add-actions {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.vocab-add-btn {
  flex: 3;
  padding: 14px 24px;
  background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
  color: white;
  border: none;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 15px -3px rgba(124, 58, 237, 0.3);
}

.vocab-add-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(124, 58, 237, 0.4);
  filter: brightness(1.1);
}

.vocab-skip-btn {
  flex: 1;
  padding: 14px 24px;
  background: #f1f5f9;
  color: #475569;
  border: none;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.vocab-skip-btn:hover {
  background: #e2e8f0;
  color: #0f172a;
  transform: translateY(-2px);
}

/* Vocabulary Panel Overlay */
.vocab-panel-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* Match Stats panel dimness (20% black) */
  background-color: rgba(0, 0, 0, 0.2);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  /* NO blur - just dim */
}

.vocab-panel-overlay.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Ensure panel is above overlay */
.vocab-panel-side {
  z-index: 1001;
}

/* Ensure add modal is above everything */
.vocab-add-modal {
  z-index: 1002 !important;
}

/* Improving Words Toggle Button */
.vocab-improving-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  margin-top: 12px;
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border: 1px solid #a7f3d0;
  border-radius: 8px;
  color: #065f46;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.vocab-improving-toggle:hover {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  border-color: #6ee7b7;
}

.vocab-improving-toggle.expanded {
  border-radius: 8px 8px 0 0;
  border-bottom: none;
}

.improving-icon {
  font-size: 1.1rem;
}

.improving-text {
  flex: 1;
  text-align: left;
}

.improving-count {
  background: #10b981;
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}

.improving-chevron {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.vocab-improving-toggle.expanded .improving-chevron {
  transform: rotate(180deg);
}

/* Improving Words List Container */
.vocab-improving-list {
  background: #f0fdf4;
  border: 1px solid #a7f3d0;
  border-top: none;
  border-radius: 0 0 8px 8px;
  padding: 12px;
  margin-bottom: 8px;
}

.vocab-improving-list .vocab-empty {
  background: #ecfdf5;
  color: #059669;
}

/* Improved word item styling */
.vocab-word-item.vocab-improved {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border-color: #a7f3d0;
}

.vocab-badge-improved {
  background: #10b981;
  color: white;
}

/* Ensure list modal is above everything */
.vocab-list-modal {
  z-index: 1002 !important;
}

/* ============================================
   Vocabulary List Modal (Full View)
   ============================================ */

.vocab-list-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* Dim the light - NO blur */
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1002 !important;
  display: none;
  align-items: center;
  justify-content: center;
  /* NO blur - just dim */
  /* Animation */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

/* CRITICAL: Active state to make modal visible and clickable */
.vocab-list-modal.active {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}



.vocab-list-header {
  padding: 20px;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f8fafc;
}

.vocab-list-header h2 {
  margin: 0;
  font-size: 1.25rem;
  color: #1e293b;
}

/* Tabs */
.vocab-tabs {
  display: flex;
  border-bottom: 1px solid #e5e7eb;
  background: white;
}

.vocab-tab-btn {
  flex: 1;
  padding: 16px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-weight: 600;
  color: #64748b;
  cursor: pointer;
  transition: all 0.2s;
}

.vocab-tab-btn:hover {
  background: #f1f5f9;
  color: #334155;
}

.vocab-tab-btn.active {
  color: #3b82f6;
  border-bottom-color: #3b82f6;
  background: #eff6ff;
}

/* Tab Content */
.vocab-tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  /* Allow horizontal scroll for wide tables */
  padding: 20px;
  -webkit-overflow-scrolling: touch;
  /* Smooth scroll on iOS */
}

.vocab-tab-content.active {
  display: block;
}

/* Table */
.vocab-table {
  width: 100%;
  border-collapse: collapse;
}

.vocab-table th {
  text-align: left;
  padding: 14px 12px;
  background: #f8fafc;
  color: #64748b;
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 2px solid #e2e8f0;
  position: sticky;
  top: -20px;
  /* Adjust for padding offset for scroll */
  z-index: 10;
}

.vocab-table td {
  padding: 14px 12px;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
  font-size: 1.05rem;
}

/* Specific alignments for clarity */
.vocab-table th:nth-child(4),
.vocab-table td:nth-child(4),
.vocab-table th:nth-child(5),
.vocab-table td:nth-child(5),
.vocab-table th:nth-child(6),
.vocab-table td:nth-child(6),
.vocab-table th:nth-child(7),
.vocab-table td:nth-child(7) {
  text-align: center;
}

.vocab-table tr:hover td {
  background: #f8fafc;
}

.vocab-phonetic {
  font-family: 'Consolas', 'Monaco', monospace;
  color: #475569;
  background: #f1f5f9;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
}

.vocab-audio-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px 8px;
  border-radius: 50%;
  transition: background 0.2s;
  color: #3b82f6;
}

.vocab-audio-btn:hover {
  background: #eff6ff;
}

/* Inline audio button (next to phonetic transcription) */
.vocab-audio-btn-inline {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  padding: 2px 6px;
  margin-left: 8px;
  border-radius: 4px;
  transition: background 0.2s, transform 0.15s;
  color: #64748b;
  vertical-align: middle;
}

.vocab-audio-btn-inline:hover {
  background: #e2e8f0;
  color: #3b82f6;
  transform: scale(1.1);
}

/* Pronunciation cell layout */
.pronunciation-cell {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-icon-remove {
  color: #ef4444;
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1.1rem;
  padding: 4px;
  border-radius: 4px;
}

.btn-icon-remove:hover {
  background: #fee2e2;
}

/* ============================================
   Watch Mode Styles
   ============================================ */

/* Video List View */
.watch-video-list-view {
  padding: 20px;
}

.watch-header {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 20px;
}

.watch-header h2 {
  margin: 0;
  font-size: 1.5rem;
  color: #1f2937;
  flex: 1;
}

.watch-search input {
  padding: 10px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.95rem;
  width: 250px;
  transition: border-color 0.2s;
}

.watch-search input:focus {
  outline: none;
  border-color: #8b5cf6;
}

.watch-filter select {
  padding: 10px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.95rem;
  background: white;
  cursor: pointer;
}

.watch-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.watch-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: #6b7280;
  font-size: 1rem;
}

/* Video Card */
.watch-video-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.watch-video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.watch-video-thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
}

.watch-video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.watch-video-card-info {
  padding: 16px;
}

.watch-video-card-title {
  margin: 0 0 8px 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: #1f2937;
  line-height: 1.4;
}

.watch-video-card-level {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.watch-video-card-level.beginner {
  background: #d1fae5;
  color: #065f46;
}

.watch-video-card-level.intermediate {
  background: #fef3c7;
  color: #92400e;
}

.watch-video-card-level.advanced {
  background: #fee2e2;
  color: #991b1b;
}

.watch-video-card-desc {
  margin: 0;
  font-size: 0.9rem;
  color: #6b7280;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.watch-video-card-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #e5e7eb;
}

.watch-video-card-progress-bar {
  flex: 1;
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
  overflow: hidden;
}

.watch-video-card-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #34d399);
  border-radius: 3px;
}

.watch-video-card-progress-text {
  font-size: 0.8rem;
  color: #6b7280;
}

/* Video Player View */
.watch-player-view {
  padding: 20px;
}

.watch-player-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.watch-player-header h3 {
  margin: 0;
  font-size: 1.25rem;
  color: #1f2937;
  flex: 1;
}

.watch-player-container {
  position: relative;
  margin-bottom: 16px;
}

/* 16:9 aspect ratio container */
.watch-player-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  /* 16:9 */
  background: #000;
  border-radius: 12px;
  overflow: hidden;
}

.watch-player-wrapper iframe,
.watch-player-wrapper>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Progress bar with markers */
.watch-progress-bar {
  position: relative;
  height: 8px;
  background: #e5e7eb;
  border-radius: 4px;
  margin-top: 12px;
  cursor: pointer;
}

.watch-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, #8b5cf6, #7c3aed);
  border-radius: 4px;
  width: 0%;
  transition: width 0.25s;
}

.watch-question-markers {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
}

.watch-question-marker {
  position: absolute;
  top: -4px;
  width: 16px;
  height: 16px;
  background: #f59e0b;
  border: 2px solid white;
  border-radius: 50%;
  transform: translateX(-50%);
  cursor: pointer;
  z-index: 2;
  transition: transform 0.2s;
}

.watch-question-marker:hover {
  transform: translateX(-50%) scale(1.2);
}

.watch-question-marker.answered {
  background: #10b981;
}

/* Controls */
.watch-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.watch-time-display {
  font-size: 0.95rem;
  color: #6b7280;
  font-family: 'Courier New', monospace;
}

.watch-video-info p {
  margin: 0;
  color: #6b7280;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Page Layout Wrapper - Contains white card + question panel as siblings */
.page-layout-wrapper {
  display: block;
  position: relative;
}

/* When Watch Mode player is active, use flex layout for side-by-side */
.page-layout-wrapper.watch-active {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Question Panel - sibling of white card, aligned with video player */
.watch-question-panel {
  width: 350px;
  flex-shrink: 0;
  background: white;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  animation: slideInPanel 0.3s ease;
  align-self: flex-start;
  margin-top: 56px;
  /* Align with content below header */
}

@keyframes slideInPanel {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.watch-question-panel-content {
  padding: 20px;
}

/* Responsive: Stack on smaller screens */
@keyframes slideUpPanel {
  from {
    transform: translateY(100%);
  }

  to {
    transform: translateY(0);
  }
}

/* Responsive: Bottom Sheet Popup on smaller screens */
@media (max-width: 900px) {
  .page-layout-wrapper.watch-active {
    flex-direction: column;
    align-items: center;
  }

  .watch-question-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    margin: 0;
    border-radius: 20px 20px 0 0;
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.15), 0 0 0 1000px rgba(0, 0, 0, 0.4);
    /* Overlay effect */
    z-index: 2000;
    animation: slideUpPanel 0.3s ease;
    max-height: 80vh;
    overflow-y: auto;
  }

  .watch-question-panel-content {
    padding-bottom: 30px;
    /* Safety padding for bottom gestures */
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.watch-question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.watch-question-header span {
  font-size: 0.9rem;
  font-weight: 600;
  color: #8b5cf6;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.watch-skip-btn {
  padding: 6px 12px;
  background: #f3f4f6;
  border: none;
  border-radius: 6px;
  color: #6b7280;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}

.watch-skip-btn:hover {
  background: #e5e7eb;
}

.watch-question-content {
  margin-bottom: 20px;
}

.watch-question-content p {
  margin: 0 0 12px 0;
  font-size: 1.1rem;
  color: #1f2937;
  line-height: 1.6;
}

.watch-audio-btn {
  padding: 8px 16px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.2s;
}

.watch-audio-btn:hover {
  transform: scale(1.05);
}

/* Multiple Choice Options */
.watch-mc-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.watch-mc-option {
  padding: 14px 18px;
  background: #f9fafb;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1rem;
  text-align: left;
}

.watch-mc-option:hover {
  border-color: #8b5cf6;
  background: #f5f3ff;
}

.watch-mc-option.selected {
  border-color: #8b5cf6;
  background: #ede9fe;
}

.watch-mc-option.correct {
  border-color: #10b981;
  background: #d1fae5;
}

.watch-mc-option.incorrect {
  border-color: #ef4444;
  background: #fee2e2;
}

/* Open-ended Answer */
.watch-open-answer {
  margin-bottom: 20px;
}

.watch-open-answer textarea {
  width: 100%;
  padding: 14px;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  font-size: 1rem;
  resize: vertical;
  min-height: 80px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.watch-open-answer textarea:focus {
  outline: none;
  border-color: #8b5cf6;
}

.watch-question-actions {
  display: flex;
  justify-content: center;
}

/* Feedback */
.watch-feedback {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #e5e7eb;
  text-align: center;
}

.watch-feedback p {
  margin: 0 0 16px 0;
  font-size: 1rem;
  font-weight: 500;
}

.watch-feedback.correct p {
  color: #059669;
}

.watch-feedback.incorrect p {
  color: #dc2626;
}

.watch-feedback button {
  margin: 0 6px;
}

/* Empty state */
.watch-empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: #6b7280;
}

.watch-empty-state h3 {
  margin: 0 0 8px 0;
  color: #374151;
}

/* ============================================
   NOTES MODE (Take Notes Practice)
   Uses Type/Speak mode layout with question selector
   ============================================ */

/* Practice Area */
#notes-practice-area {
  margin-top: 20px;
}

/* Steps */
.notes-step {
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
}

.notes-step-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.notes-step-badge {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.notes-step-header h4 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-main);
}

/* Step 1: Video */
.notes-video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  /* 16:9 aspect ratio */
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 16px;
}

.notes-video-wrapper iframe,
.notes-video-wrapper>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.notes-video-controls {
  text-align: center;
}

/* Step 2: Audio + Notes */
.notes-audio-player {
  margin-bottom: 20px;
}

.notes-audio-player audio {
  width: 100%;
}

.notes-textarea-wrapper {
  margin-bottom: 16px;
}

.notes-textarea-wrapper label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.notes-textarea-wrapper textarea {
  width: 100%;
  min-height: 150px;
  padding: 12px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  font-size: 1rem;
  line-height: 1.6;
  resize: vertical;
}

.notes-textarea-wrapper textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.notes-submit-controls {
  text-align: center;
}

/* Step 3: Results */
.notes-results-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .notes-results-layout {
    grid-template-columns: 1fr;
  }
}

.notes-results-column h5 {
  margin: 0 0 12px 0;
  font-size: 1rem;
  color: var(--text-main);
  padding-bottom: 8px;
  border-bottom: 2px solid #e5e7eb;
}

.notes-transcript-display,
.notes-user-display {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 16px;
  min-height: 150px;
  font-size: 0.95rem;
  line-height: 1.8;
}

.notes-matched {
  background: #dcfce7;
  color: #166534;
  padding: 2px 4px;
  border-radius: 3px;
  font-weight: 500;
}

.notes-results-stats {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 20px;
}

.notes-results-stats span {
  font-weight: 700;
  color: #16a34a;
  font-size: 1.3rem;
}

.notes-results-controls {
  text-align: center;
}

/* ============================================
   MOBILE LAYOUT FIXES (< 768px only)
   Desktop layout remains unchanged
   ============================================ */

/* Mobile toolbar - hidden on desktop */
.mobile-toolbar {
  display: none;
}

@media (max-width: 767px) {

  /* Prevent horizontal overflow on mobile */
  .container {
    box-sizing: border-box;
    margin: 0;
    padding: 24px;
    width: auto;
    max-width: none;
    border-radius: 0;
    box-shadow: none;
  }

  /* Keep segmented control within viewport */
  .dashboard-segmented-control {
    box-sizing: border-box;
    display: flex;
    width: 100%;
    max-width: 100%;
    left: 0;
    transform: none;
  }

  .segmented-btn {
    flex: 1;
    padding: 10px 10px;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* ============================================
     FIX 1: Hide floating panel toggles on mobile
     Replace with mobile toolbar at bottom
     ============================================ */

  /* Hide floating toggle buttons */
  .progress-panel-toggle,
  .account-panel-toggle,
  .vocab-panel-toggle {
    display: none !important;
  }

  /* Hide the entire side panel containers when not expanded */
  .progress-panel-side:not(.expanded),
  .account-panel-side:not(.expanded),
  .vocab-panel-side:not(.expanded) {
    display: none !important;
  }

  /* When panels ARE expanded, show them as full-screen overlays */
  .progress-panel-side.expanded,
  .account-panel-side.expanded,
  .vocab-panel-side.expanded {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex !important;
    transform: none;
  }

  .progress-panel-side.expanded .progress-panel-content,
  .account-panel-side.expanded .account-panel-content,
  .vocab-panel-side.expanded .vocab-panel-content {
    width: 100% !important;
    max-width: 100% !important;
    height: 100%;
    border-radius: 0;
    transform: none;
  }

  /* Show mobile toolbar */
  .mobile-toolbar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--bg-card);
    border-top: 1px solid #e5e7eb;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 998;
    justify-content: space-around;
    align-items: center;
    padding: 0 16px;
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  .mobile-toolbar-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 8px 16px;
    min-width: 64px;
    min-height: 44px;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.2s ease;
  }

  .mobile-toolbar-btn:hover,
  .mobile-toolbar-btn:active {
    background: #f3f4f6;
  }

  .mobile-toolbar-icon {
    font-size: 1.5rem;
    line-height: 1;
  }

  .mobile-toolbar-label {
    font-size: 0.7rem;
    color: #6b7280;
    margin-top: 2px;
    font-weight: 500;
  }

  /* Add bottom padding to main content to prevent overlap with toolbar */
  body {
    padding-bottom: 70px;
  }

  .container {
    margin-bottom: 20px;
  }

  /* ============================================
     FIX 2: Convert shop table to vertical cards
     ============================================ */

  .shopping-modal-content {
    padding: 20px 16px !important;
    max-width: 100%;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
  }

  .shopping-modal-content h2 {
    font-size: 1.4rem;
  }

  .shopping-points-display {
    padding: 12px 20px;
    gap: 8px;
  }

  .shopping-points-value {
    font-size: 1.75rem;
  }

  /* Hide table header on mobile */
  .shopping-table thead {
    display: none;
  }

  /* Convert table to card layout */
  .shopping-table,
  .shopping-table tbody {
    display: block;
    width: 100%;
  }

  .shopping-table tbody tr {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  }

  .shopping-table tbody tr:hover {
    background: #faf5ff;
  }

  .shopping-table td {
    display: block;
    padding: 8px 0;
    text-align: left !important;
    border: none;
  }

  /* Reward info card header */
  .shopping-table td:first-child {
    order: 1;
    padding-bottom: 12px;
    border-bottom: 1px solid #f3f4f6;
  }

  .reward-title {
    font-size: 1.1rem;
    margin-bottom: 4px;
  }

  .reward-description {
    font-size: 0.85rem;
  }

  /* Cost display */
  .shopping-table td:nth-child(2) {
    order: 2;
    padding: 12px 0;
  }

  .reward-cost {
    justify-content: flex-start;
    font-size: 1.1rem;
  }

  .reward-cost::before {
    content: "Cost: ";
    font-weight: 400;
    color: #6b7280;
    font-size: 0.9rem;
  }

  /* Action button */
  .shopping-table td:last-child {
    order: 3;
    padding-top: 12px;
  }

  .shopping-table td:last-child .reward-btn,
  .shopping-table td:last-child .reward-btn-unlocked {
    width: 100%;
    min-height: 44px;
    font-size: 1rem;
  }

  /* Guest toast positioning for mobile toolbar */
  .guest-toast {
    bottom: 80px !important;
  }
}

/* ============================================
   Vocabulary List Modal Fixes & SRS
   ============================================ */

.vocab-list-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  /* hidden by default */
  align-items: center;
  justify-content: center;
}

.vocab-list-modal.active {
  display: flex !important;
}

.vocab-list-content-modal {
  background: var(--bg-card);
  width: 95%;
  max-width: 1100px;
  height: auto;
  max-height: 90vh;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  margin: 0;
  position: relative;
}

/* SRS Badge Styles */
.vocab-badge-srs {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid transparent;
  background: #f1f5f9;
  color: #64748b;
}

.vocab-badge-srs.due {
  background: #fee2e2;
  color: #991b1b;
  border-color: #fca5a5;
}

.vocab-badge-srs.mastered {
  background: linear-gradient(135deg, #dcfce7, #bbf7d0);
  color: #166534;
  border-color: #86efac;
}

.vocab-badge-srs.learning {
  background: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

/* Part of Speech (Form) Badge Styles */
.vocab-badge-pos {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: capitalize;
  background: #f1f5f9;
  color: #64748b;
  border: 1px solid #e2e8f0;
}

.vocab-badge-pos-noun {
  background: #dbeafe;
  color: #1e40af;
  border-color: #93c5fd;
}

.vocab-badge-pos-verb {
  background: #dcfce7;
  color: #166534;
  border-color: #86efac;
}

.vocab-badge-pos-adjective {
  background: #fef3c7;
  color: #92400e;
  border-color: #fcd34d;
}

.vocab-badge-pos-adverb {
  background: #ede9fe;
  color: #5b21b6;
  border-color: #c4b5fd;
}

.vocab-badge-pos-preposition {
  background: #fce7f3;
  color: #9d174d;
  border-color: #f9a8d4;
}

.vocab-badge-pos-conjunction {
  background: #ccfbf1;
  color: #115e59;
  border-color: #5eead4;
}


/* Custom Alert Modal */
/* Custom Alert Modal */
.vocab-alert-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 20000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  animation: modalFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.vocab-alert-content {
  background: var(--bg-card);
  padding: 32px 24px;
  border-radius: 24px;
  width: 100%;
  max-width: 380px;
  text-align: center;
  box-shadow:
    0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04),
    0 0 0 1px rgba(0, 0, 0, 0.05);
  /* Subtle border */
  transform: scale(0.95);
  animation: modalContentPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes modalContentPop {
  from {
    transform: scale(0.95) translateY(10px);
  }

  to {
    transform: scale(1) translateY(0);
  }
}

#vocab-alert-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 12px 0;
}

#vocab-alert-message {
  font-size: 1rem;
  color: #4b5563;
  line-height: 1.6;
  margin: 0;
}

.vocab-alert-actions {
  margin-top: 24px;
  display: flex;
  justify-content: center;
}

#vocab-alert-ok {
  background: var(--primary);
  color: white;
  border: none;
  padding: 12px 32px;
  border-radius: 9999px;
  /* Pill shape */
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
}

#vocab-alert-ok:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 8px -1px rgba(37, 99, 235, 0.4);
}

#vocab-alert-ok:active {
  transform: translateY(0);
}

/* ============================================
   Writing Challenge Styles
   ============================================ */

/* Toast notification for Writing Challenge */
.srs-writing-toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.4);
  z-index: 11001;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.srs-writing-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.srs-writing-toast .toast-icon {
  font-size: 1.3rem;
  animation: bounceIcon 0.6s ease 0.2s;
}

@keyframes bounceIcon {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.3);
  }
}

.srs-writing-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: transparent !important;
  /* Remove backdrop as requested */
  backdrop-filter: none !important;
  /* Remove blur as requested */
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  opacity: 0;
  pointer-events: none;
  /* Prevent blocking interaction when invisible */
  transition: opacity 0.4s ease;
}

.srs-writing-modal.visible {
  display: flex !important;
  opacity: 1;
  pointer-events: auto;
}

.srs-writing-content {
  background: white;
  width: 1100px;
  /* Increased for two-column */
  max-width: 95%;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 24px;
  padding: 40px;
  /* Increased padding */
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
  /* Enhanced shadow since backdrop is gone */
  text-align: left;
  /* Changed from center */
  transform: translateY(30px);
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  border: 1px solid #eef2f6;
}

.srs-writing-modal.visible .srs-writing-content {
  transform: translateY(0);
  opacity: 1;
}

.srs-writing-header {
  margin-bottom: 32px;
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 20px;
}

.srs-writing-header h3 {
  margin: 0 0 8px 0;
  font-size: 1.8rem;
  color: #1e293b;
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-start;
}

.srs-writing-subtitle {
  color: #64748b;
  font-size: 1rem;
  margin: 0;
}

/* Two-Column Body Layout */
.srs-writing-body {
  display: flex;
  gap: 40px;
  align-items: stretch;
}

.srs-writing-left {
  flex: 1;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.srs-writing-right {
  flex: 1.2;
  min-width: 350px;
  display: flex;
  flex-direction: column;
  background: #f8fafc;
  padding: 24px;
  border-radius: 20px;
  border: 1px solid #f1f5f9;
}

/* Hints Box Redesign */
.srs-writing-hints {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 20px;
  margin: 0;
  text-align: left;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.hint-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.6;
  flex-wrap: nowrap;
  align-items: flex-start;
}

.hint-item:last-child {
  margin-bottom: 0;
}

.hint-label {
  font-weight: 700;
  color: #475569;
  white-space: nowrap;
  min-width: 100px;
}

.hint-value {
  color: #334155;
  flex: 1;
}

/* Collocation pills */
#hint-collocations .hint-value {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.collocation-pill {
  background: #eef2ff;
  color: #4f46e5;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid #c7d2fe;
}

.help-action-wrapper {
  margin-top: 10px;
  text-align: center;
}

/* Input Side Styles */
.srs-writing-prompt {
  font-size: 1.1rem;
  line-height: 1.6;
  margin: 0 0 16px 0;
  padding: 16px 20px;
  background: #ecfdf5;
  border-radius: 16px;
  border-left: 5px solid #10b981;
  color: #065f46;
  font-weight: 600;
}

#hint-starter {
  justify-content: flex-start;
  margin-bottom: 16px;
  background: #fff;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px dashed #cbd5e1;
}

#hint-starter .hint-value {
  color: #0369a1;
  font-style: italic;
  font-weight: 500;
}

.srs-writing-input {
  width: 100%;
  min-height: 150px;
  flex: 1;
  padding: 20px;
  font-size: 1.15rem;
  border: 2px solid #e2e8f0;
  border-radius: 16px;
  resize: none;
  font-family: inherit;
  transition: all 0.2s ease;
  background: white;
  margin-bottom: 16px;
}

.srs-writing-input:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.srs-writing-actions {
  display: flex;
  gap: 16px;
  margin-top: auto;
}

.srs-writing-btn-submit {
  flex: 2;
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: white;
  border: none;
  padding: 16px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.srs-writing-btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.srs-writing-btn-skip {
  flex: 1;
  background: white;
  color: #64748b;
  border: 1px solid #e2e8f0;
  padding: 16px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
}

.srs-writing-btn-skip:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #334155;
}

.srs-writing-feedback {
  margin-top: 12px;
  padding: 16px;
  border-radius: 12px;
  font-size: 0.95rem;
  display: none;
  text-align: left;
  animation: slideInUp 0.3s ease;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.scaffolding-panel {
  background: #fffbeb;
  border-radius: 16px;
  margin: 0;
  border: 1px solid #fcd34d;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.scaffolding-panel.visible {
  max-height: 500px;
  /* Adjusted */
  opacity: 1;
  padding: 20px;
  margin-top: 10px;
}

/* POS Tag Styling */
.writing-pos-tag {
  font-size: 0.55em;
  background: #e0f2fe;
  color: #0284c7;
  padding: 3px 10px;
  border-radius: 20px;
  vertical-align: middle;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Mobile Responsiveness for Writing Challenge */
@media (max-width: 900px) {
  .srs-writing-body {
    flex-direction: column;
    gap: 20px;
  }

  .srs-writing-content {
    width: 95%;
    padding: 0;
    /* Remove padding to handle overflow correctly */
    max-height: 95vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Manage scroll internally */
  }

  .srs-writing-header {
    padding: 24px 24px 16px 24px;
    margin: 0;
  }

  .srs-writing-body {
    overflow-y: auto;
    padding: 0 24px 24px 24px;
    gap: 16px;
  }

  .srs-writing-right {
    padding: 16px;
    background: transparent;
    /* Cleaner on mobile */
    border: none;
    display: flex;
    flex-direction: column;
    min-height: 400px;
    /* Ensure enough space */
  }

  /* Sticky Action Bar */
  .srs-writing-actions {
    position: sticky;
    bottom: -24px;
    /* Counteract body padding */
    margin: 16px -16px -16px -16px;
    padding: 16px;
    background: white;
    border-top: 1px solid #e2e8f0;
    z-index: 50;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.05);
  }

  .srs-writing-input {
    min-height: 200px;
    /* Ensure visible area */
  }
}

/* ============================================
   More Help! Button & Scaffolding Panel
   ============================================ */

.more-help-btn {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
}

.more-help-btn:hover {
  background: linear-gradient(135deg, #d97706, #b45309);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.more-help-btn:active {
  transform: translateY(0);
}

.more-help-btn.active {
  background: linear-gradient(135deg, #b45309, #92400e);
}

/* Pulse Ring Animation */
.more-help-btn {
  position: relative;
}

.pulse-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110%;
  height: 110%;
  border: 2px solid #f59e0b;
  border-radius: 20px;
  animation: srs-pulse-ring 2s infinite;
  pointer-events: none;
  opacity: 0;
}

@keyframes srs-pulse-ring {
  0% {
    transform: translate(-50%, -50%) scale(0.95);
    opacity: 0.8;
  }

  100% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0;
  }
}

/* Scaffolding Panel as an Accordion */
.scaffolding-panel {
  display: block;
  /* Always block, use max-height for collapse */
  background: linear-gradient(135deg, #fffbeb, #fefce8);
  border-radius: 12px;
  margin-bottom: 16px;
  border: 1px solid #fcd34d;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.scaffolding-panel.visible {
  max-height: 800px;
  opacity: 1;
  padding: 20px;
  margin-top: 10px;
  border-width: 2px;
}

.scaffolding-section {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #fde68a;
}

.scaffolding-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.scaffolding-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #78350f;
  margin: 0 0 12px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.01em;
}

/* Example Sentences List - Premium Card Design */
.example-sentences-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.example-sentence-item {
  background: linear-gradient(145deg, #ffffff, #fefce8);
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: #1f2937;
  border: 1px solid #fef3c7;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.08);
  position: relative;
  padding-left: 24px;
  transition: all 0.2s ease;
}

.example-sentence-item::before {
  content: '"';
  position: absolute;
  left: 10px;
  top: 18px;
  /* Adjusted to align with text baseline */
  font-size: 1.8rem;
  color: #f59e0b;
  font-family: Georgia, serif;
  line-height: 0.5;
}

.example-sentence-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.15);
  border-color: #fcd34d;
}

.example-sentence-item.loading {
  color: #9ca3af;
  font-style: italic;
  text-align: center;
  background: #f8fafc;
  border-color: #e5e7eb;
  padding-left: 16px;
}

.example-sentence-item.loading::before {
  display: none;
}

.example-sentence-item.no-examples {
  color: #6b7280;
  font-style: italic;
  text-align: center;
  background: #f9fafb;
  border-color: #e5e7eb;
  padding-left: 16px;
}

.example-sentence-item.no-examples::before {
  display: none;
}

.highlight-word {
  background: linear-gradient(135deg, #fef08a, #fde047);
  color: #854d0e;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* YouGlish Container */
.youglish-container {
  background: white;
  border-radius: 8px;
  padding: 12px 14px;
  border-left: 3px solid #8b5cf6;
}

.youglish-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #7c3aed;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.youglish-link:hover {
  color: #5b21b6;
  text-decoration: underline;
}

.youglish-icon {
  font-size: 1.2rem;
}

.youglish-loading {
  color: #9ca3af;
  font-style: italic;
  font-size: 0.9rem;
}

/* =========================================
   Vocabulary Mobile UI
   ========================================= */
@media (max-width: 640px) {
  .vocab-list-content-modal {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    max-height: none !important;
    border-radius: 0 !important;
    display: flex;
    flex-direction: column;
  }

  .vocab-list-header {
    padding: 12px 16px;
    flex-shrink: 0;
  }

  .vocab-tabs {
    flex-shrink: 0;
  }

  .vocab-tab-btn {
    padding: 12px;
    font-size: 0.9rem;
  }

  .vocab-tab-content {
    padding: 0;
    /* Maximize space for table */
  }

  .vocab-table th,
  .vocab-table td {
    padding: 10px 8px;
    /* Tighter cell padding */
    font-size: 0.9rem;
  }

  .vocab-phonetic {
    font-size: 0.9rem;
    padding: 2px 6px;
  }
}

/* ============================================
   Pronunciation/Timeline Visualization
   ============================================ */
.pa-timeline-container {
  margin-top: 16px;
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pa-timeline-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pa-timeline-label {
  width: 60px;
  font-weight: 600;
  font-size: 0.9rem;
  color: #374151;
  text-align: right;
  flex-shrink: 0;
}

.pa-timeline-track {
  flex-grow: 1;
  height: 28px;
  background: #f3f4f6;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-light);
}

.pa-timeline-block {
  position: absolute;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #ffffff;
  font-weight: 600;
  border-right: 1px solid rgba(255, 255, 255, 0.4);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 4px;
}

.pa-timeline-block.native {
  background: rgba(34, 197, 94, 0.7);
}

.pa-timeline-block.user {
  background: rgba(59, 130, 246, 0.7);
}

/* ============================================
   Vocabulary Tutorial Overlay
   ============================================ */

.vocab-tutorial-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  pointer-events: auto;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.vocab-tutorial-overlay.active {
  opacity: 1;
}

.vocab-tutorial-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
}

.vocab-tutorial-spotlight {
  position: fixed;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.65);
  border-radius: 8px;
  z-index: 10001;
  pointer-events: none;
  transition: all 0.3s ease;
}

.vocab-tutorial-spotlight.pulse {
  animation: spotlight-pulse 2s ease-in-out infinite;
}

@keyframes spotlight-pulse {

  0%,
  100% {
    box-shadow:
      0 0 0 9999px rgba(0, 0, 0, 0.65),
      0 0 0 4px rgba(99, 102, 241, 0.5),
      0 0 20px 4px rgba(99, 102, 241, 0.3);
  }

  50% {
    box-shadow:
      0 0 0 9999px rgba(0, 0, 0, 0.65),
      0 0 0 6px rgba(99, 102, 241, 0.7),
      0 0 30px 8px rgba(99, 102, 241, 0.5);
  }
}

.vocab-tutorial-tooltip {
  position: fixed;
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border-radius: 16px;
  padding: 24px;
  width: 360px;
  max-width: calc(100vw - 32px);
  z-index: 10002;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(148, 163, 184, 0.1);
  color: #f1f5f9;
  animation: tooltip-entrance 0.3s ease-out;
}

@keyframes tooltip-entrance {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.vocab-tutorial-tooltip.center {
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
}

/* Tooltip arrow indicators */
.vocab-tutorial-tooltip::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border: 10px solid transparent;
}

.vocab-tutorial-tooltip.arrow-top::before {
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  border-bottom-color: #1e293b;
}

.vocab-tutorial-tooltip.arrow-bottom::before {
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  border-top-color: #1e293b;
}

.vocab-tutorial-tooltip.arrow-left::before {
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  border-right-color: #1e293b;
}

.vocab-tutorial-tooltip.arrow-right::before {
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  border-left-color: #1e293b;
}

.vocab-tutorial-tooltip .tutorial-icon {
  display: block;
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 12px;
}

.vocab-tutorial-tooltip h3 {
  margin: 0 0 12px 0;
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  color: #ffffff;
}

.vocab-tutorial-tooltip p {
  margin: 0 0 20px 0;
  font-size: 1rem;
  line-height: 1.6;
  color: #cbd5e1;
  text-align: center;
}

.vocab-tutorial-tooltip p strong {
  color: #a78bfa;
  font-weight: 600;
}

.tutorial-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.tutorial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #475569;
  transition: all 0.2s ease;
}

.tutorial-dot.active {
  background: #6366f1;
  transform: scale(1.2);
}

.tutorial-dot.completed {
  background: #22c55e;
}

.tutorial-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.tutorial-skip {
  padding: 12px 20px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: transparent;
  color: #94a3b8;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
}

.tutorial-skip:hover {
  background: rgba(148, 163, 184, 0.1);
  color: #cbd5e1;
}

.tutorial-next {
  flex: 1;
  padding: 12px 24px;
  border: none;
  background: linear-gradient(145deg, #6366f1, #4f46e5);
  color: white;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tutorial-next:hover {
  background: linear-gradient(145deg, #818cf8, #6366f1);
  transform: translateY(-1px);
}

/* ============================================
   Tutorial Replay Settings Section
   ============================================ */

.tutorial-replay-section {
  margin-top: 24px;
  padding: 20px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  text-align: left;
}

.tutorial-replay-header {
  margin: 0 0 8px 0;
  font-size: 1rem;
  font-weight: 600;
  color: #1e293b;
}

.tutorial-replay-desc {
  margin: 0 0 16px 0;
  font-size: 0.9rem;
  color: #64748b;
}

.tutorial-toggle-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tutorial-toggle-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  transition: all 0.2s;
}

.tutorial-toggle-item:hover {
  border-color: #cbd5e1;
  background: #fafbfc;
}

.tutorial-toggle-item .toggle-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: #334155;
}

/* Toggle Switch Component */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: 0.3s;
  border-radius: 26px;
}

.toggle-slider::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked+.toggle-slider {
  background-color: #6366f1;
}

.toggle-switch input:checked+.toggle-slider::before {
  transform: translateX(22px);
}

.toggle-switch input:focus+.toggle-slider {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Mobile responsiveness for tutorial */
@media (max-width: 480px) {
  .vocab-tutorial-tooltip {
    width: calc(100vw - 32px);
    padding: 20px;
    left: 16px !important;
    right: 16px !important;
  }

  .vocab-tutorial-tooltip .tutorial-icon {
    font-size: 2rem;
  }

  .vocab-tutorial-tooltip h3 {
    font-size: 1.1rem;
  }

  .vocab-tutorial-tooltip p {
    font-size: 0.95rem;
  }

  .tutorial-actions {
    flex-direction: column;
  }

  .tutorial-skip,
  .tutorial-next {
    width: 100%;
  }

  .tutorial-toggle-item {
    padding: 10px 12px;
  }

  .tutorial-toggle-item .toggle-label {
    font-size: 0.9rem;
  }
}

/* FIX: Tutorial Layering (Must be above SRS Panel z-index 10001) */
.vocab-tutorial-overlay {
  z-index: 20000 !important;
}

.vocab-tutorial-spotlight {
  z-index: 20001 !important;
}

.vocab-tutorial-tooltip {
  z-index: 20002 !important;
}

/* ============================================
   Locked Tabs & Shop UI
   ============================================ */

/* Locked Tab Styling */
.tab-btn.locked {
  position: relative;
  color: #9ca3af;
  cursor: not-allowed;
  opacity: 0.7;
}

.tab-btn.locked:hover {
  color: #6b7280;
}

.tab-btn.locked::after {
  content: '🔒';
  font-size: 0.8em;
  margin-left: 6px;
  vertical-align: middle;
}

/* Shop Modal */
.shop-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}

.shop-modal.active {
  opacity: 1;
  visibility: visible;
}

#shop-modal .shop-modal-content {
  background: white;
  width: 98vw !important;
  max-width: 98vw !important;
  height: 95vh !important;
  max-height: 95vh !important;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

/* Shop Modal Tabs */
.shop-tabs {
  display: flex;
  gap: 10px;
  padding: 0 24px 12px;
  background: #f8fafc;
  border-bottom: 1px solid #e5e7eb;
  position: relative;
  z-index: 100;
}

.shop-tab-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: #64748b;
  font-weight: 600;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
  font-size: 0.95rem;
}

.shop-tab-btn:hover {
  background: rgba(148, 163, 184, 0.1);
  color: #1e293b;
}

.shop-tab-btn.active {
  background: #2563eb;
  color: white;
}

.shop-tab-content {
  display: none;
  flex-grow: 1;
  overflow-y: auto;
}

#skill-tree-container.shop-tab-content {
  overflow: hidden !important;
}

.shop-tab-content.active {
  display: flex;
  flex-direction: column;
}

/* RPG Skill Tree Enhancement - Branching Layout */
.level-system-container {
  padding: 40px 20px;
  background: radial-gradient(circle at center, #f8fafc 0%, #f1f5f9 100%);
  min-height: 600px;
}

.skill-tree-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 60px;
  width: 100%;
  padding-bottom: 50px;
}

.tree-header {
  position: relative;
}

.origin-node {
  width: 100px;
  height: 100px;
  background: white;
  border: 4px solid #3b82f6;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.2);
  z-index: 10;
  position: relative;
}

.origin-node::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  width: 2px;
  height: 30px;
  background: #cbd5e1;
  transform: translateX(-50%);
}

.skill-tree-branches {
  display: flex;
  justify-content: space-around;
  width: 100%;
  max-width: 1000px;
  gap: 20px;
  position: relative;
}

/* Horizontal connector for roots */
.skill-tree-branches::before {
  content: '';
  position: absolute;
  top: -30px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: #cbd5e1;
}

.skill-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 60px;
  position: relative;
  flex: 1;
}

.skill-node-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.skill-line {
  position: absolute;
  top: -60px;
  left: 50%;
  width: 2px;
  height: 60px;
  background: #cbd5e1;
  transform: translateX(-50%);
  transition: background 0.5s;
}

.skill-line.active {
  background: #fbbf24;
}

.skill-line.root-connector {
  top: -30px;
  height: 30px;
}

.skill-node {
  width: 80px;
  height: 80px;
  background: white;
  border: 3px solid #e2e8f0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  z-index: 5;
}

.skill-node:hover {
  transform: scale(1.15);
  z-index: 20;
}

.skill-node.unlocked {
  border-color: #fbbf24;
  background: #fffbeb;
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.4);
}

.skill-node.available {
  border-color: #3b82f6;
  animation: node-pulse 2s infinite;
}

.skill-node.locked {
  filter: grayscale(1);
  opacity: 0.5;
  cursor: not-allowed;
}

.node-inner {
  font-size: 2.2rem;
}

.node-label {
  position: absolute;
  top: 100%;
  margin-top: 10px;
  white-space: nowrap;
  font-weight: 700;
  font-size: 0.85rem;
  color: #1e293b;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

@keyframes node-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
  }

  70% {
    box-shadow: 0 0 0 15px rgba(59, 130, 246, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
  }
}

.skill-node:hover .skill-popup {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-10px);
}

.skill-popup {
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: rgba(30, 41, 59, 0.95);
  backdrop-filter: blur(8px);
  color: white;
  padding: 16px;
  border-radius: 12px;
  width: 240px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  pointer-events: none;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
}

.skill-popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  border: 10px solid transparent;
  border-top-color: rgba(30, 41, 59, 0.95);
  transform: translateX(-50%);
}

.skill-popup h5 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: #fbbf24;
}

.skill-popup p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  opacity: 0.9;
}

.popup-footer {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.status-tag {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
}

.status-tag.mastered {
  background: #059669;
  color: white;
}

.status-tag.cost {
  background: #d97706;
  color: white;
}

.status-tag.req {
  background: #ef4444;
  color: white;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 6px;
}

.skill-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: #1e293b;
  line-height: 1.2;
}

.skill-desc {
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.4;
  margin: 0;
}

.skill-level-req {
  font-size: 0.7rem;
  font-weight: 700;
  color: #ef4444;
  background: #fef2f2;
  padding: 2px 6px;
  border: 1px solid #fee2e2;
  border-radius: 4px;
  white-space: nowrap;
}

.skill-action {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.status-badge.unlocked {
  color: #059669;
  background: #ecfdf5;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid #d1fae5;
}

.skill-buy-btn {
  padding: 8px 16px;
  border-radius: 8px;
  background: #2563eb;
  color: white;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.skill-buy-btn:hover:not(:disabled) {
  background: #1d4ed8;
  box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.skill-buy-btn:disabled {
  background: #cbd5e1;
  cursor: not-allowed;
  opacity: 0.7;
}

.cost-badge {
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Level Summary Enhancement */
.level-header-summary {
  background: white;
  border-radius: 20px;
  padding: 24px;
  display: flex;
  gap: 24px;
  align-items: center;
  margin-bottom: 30px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.level-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.3);
  border: 4px solid #fff;
}

.shop-header {
  padding: 24px;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f8fafc;
}

.shop-header h2 {
  margin: 0;
  font-size: 1.5rem;
  color: #1e293b;
  display: flex;
  align-items: center;
  gap: 10px;
}

.shop-balance {
  background: #fff;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid #e2e8f0;
  font-weight: 600;
  color: #d97706;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.shop-body {
  padding: 24px;
  overflow-y: auto;
  background: #f1f5f9;
}

.shop-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #64748b;
  cursor: pointer;
  transition: color 0.2s;
  padding: 4px;
}

.shop-close-btn:hover {
  color: #1e293b;
}

.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.shop-item {
  background: white;
  border-radius: 12px;
  padding: 20px;
  border: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.shop-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.shop-item.purchased {
  border-color: #22c55e;
  background: #f0fdf4;
}

.shop-item-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  text-align: center;
}

.shop-item-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #1e293b;
}

.shop-item-desc {
  color: #64748b;
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
  line-height: 1.5;
}

.shop-item-price {
  font-weight: 700;
  color: #d97706;
  font-size: 1.1rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.shop-item-btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
}

.shop-item-btn.buy {
  background: var(--primary);
  color: white;
}

.shop-item-btn.buy:hover:not(:disabled) {
  background: var(--primary-hover);
}

.shop-item-btn:disabled {
  background: #cbd5e1;
  cursor: not-allowed;
  color: #94a3b8;
}

.shop-item-btn.owned {
  background: #22c55e;
  color: white;
  cursor: default;
}

.shop-item-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #d97706;
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
}

.shop-notification {
  position: absolute;
  top: -5px;
  right: -5px;
  width: 12px;
  height: 12px;
  background: #ef4444;
  border-radius: 50%;
  border: 2px solid white;
}

/* Shop UI Optimizations */
.panel-shopping-card {
  margin-top: 20px;
  background: linear-gradient(to right, #ffffff, #fcfaff);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid #e2e8f0;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.panel-shopping-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: #7c3aed;
}

.panel-shopping-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(124, 58, 237, 0.2);
  border-color: #d8b4fe;
}

.shopping-icon {
  font-size: 1.5rem;
  background: #f3e8ff;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
}

.shopping-label {
  font-weight: 700;
  color: #4b5563;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  flex: 1;
}

.shop-item-desc {
  font-size: 0.875rem;
  color: #444;
  /* Darkened for better contrast */
  margin-bottom: 16px;
  line-height: 1.5;
}

.shop-item {
  padding: 24px;
}



/* ============================================
   Scaffolding Extras - Premium Card Layout
   ============================================ */

.scaffolding-extras-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}

.scaffold-section {
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  border-radius: 12px;
  padding: 14px 16px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: all 0.2s ease;
}

.scaffold-section:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border-color: #cbd5e1;
}

/* Make patterns span full width */
.scaffold-section.full-width {
  grid-column: 1 / -1;
}

.scaffold-section h4 {
  font-size: 0.85rem;
  color: #475569;
  margin: 0 0 10px 0;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid #f1f5f9;
}

.scaffold-section h4::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 16px;
  background: linear-gradient(180deg, #6366f1, #8b5cf6);
  border-radius: 2px;
}

/* Word Breakdown Visual */
.breakdown-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-family: 'Inter', 'Roboto Mono', monospace;
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
}

.syllable-chip {
  font-size: 1.15rem;
  font-weight: 600;
  color: #1e293b;
  letter-spacing: 0.02em;
}

.syllable-divider {
  color: #94a3b8;
  font-size: 0.9rem;
  margin: 0 4px;
}

/* Context & POS - Premium Styling */
.context-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pos-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #dbeafe, #eff6ff);
  color: #1d4ed8;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: capitalize;
  width: fit-content;
  border: 1px solid #bfdbfe;
  box-shadow: 0 1px 3px rgba(59, 130, 246, 0.1);
}

.pos-tag::before {
  content: '•';
  color: #3b82f6;
  font-size: 1rem;
}

.synonyms-list {
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.5;
  padding: 8px 12px;
  background: #f8fafc;
  border-radius: 8px;
  border-left: 3px solid #22c55e;
}

.synonyms-list strong {
  color: #15803d;
  font-weight: 600;
}

/* Example Phrases - Premium Card List */
.pattern-list-compact {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pattern-list-compact li {
  padding: 10px 14px;
  background: linear-gradient(135deg, #faf5ff, #fdf4ff);
  border-radius: 10px;
  font-size: 0.9rem;
  color: #1e293b;
  border: 1px solid #e9d5ff;
  position: relative;
  padding-left: 20px;
  transition: all 0.2s ease;
}

.pattern-list-compact li::before {
  content: '→';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: #a855f7;
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1;
}

.pattern-list-compact li:hover {
  background: linear-gradient(135deg, #f3e8ff, #fce7f3);
  transform: translateX(4px);
  border-color: #d8b4fe;
}

.pattern-list-compact li strong {
  color: #7c3aed;
  font-weight: 700;
  background: linear-gradient(135deg, #8b5cf6, #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Shop UI Improvements */
.shop-owned-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.shop-play-btn,
.shop-tutorial-btn {
  flex: 1;
  padding: 8px;
  border-radius: 6px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.shop-play-btn {
  background: var(--primary);
  color: white;
}

.shop-play-btn:hover {
  background: var(--primary-hover);
}

.shop-tutorial-btn {
  background: #f1f5f9;
  color: #475569;
}

.shop-tutorial-btn:hover {
  background: #e2e8f0;
}

.unlocked-date {
  font-size: 0.8rem;
  color: #64748b;
  font-weight: normal;
  display: block;
  margin-top: 4px;
}

.shop-item.purchased {
  border-color: #cbd5e1;
  background: #f8fafc;
}

.shop-item.purchased .shop-item-icon {
  filter: grayscale(0.2);
}

/* Dashboard Slider */
.dashboard-slider-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  margin-bottom: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.dashboard-slider-track {
  display: flex;
  transition: transform 0.3s ease-in-out;
  width: 100%;
}

.dashboard-card {
  flex: 0 0 100%;
  width: 100%;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: white;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s;
  box-sizing: border-box;
}

.dashboard-card:hover {
  transform: translateY(-2px);
}

.dashboard-card.tutorial-card {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  cursor: default;
}

.dashboard-card.tutorial-card:hover {
  transform: none;
}

.tutorial-card-content {
  width: 100%;
}

.tutorial-card-content h3 {
  margin: 0 0 4px 0;
  color: white;
  font-size: 1.25rem;
}

.tutorial-card-content p {
  margin: 0 0 12px 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
}

.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: 8px;
}

.tutorial-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all 0.2s;
}

.tutorial-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.15);
  color: white;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  opacity: 0;
  pointer-events: none;
}

.dashboard-slider-wrapper:hover .slider-arrow {
  opacity: 1;
  pointer-events: auto;
}

.slider-prev {
  left: 10px;
}

.slider-next {
  right: 10px;
}

.slider-arrow:hover {
  background: rgba(0, 0, 0, 0.4);
}

.slider-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: background 0.2s;
}

.slider-dot.active {
  background: white;
  width: 12px;
  border-radius: 4px;
}

/* Dashboard Menu Redesign */
.dashboard-menu-container {
  margin-bottom: 24px;
}

.dashboard-menu-container h2 {
  font-size: 1.25rem;
  margin: 0 0 12px 0;
  color: var(--text-main);
  font-weight: 700;
}

.dashboard-menu-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.dashboard-menu-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  width: 100%;
  text-align: left;
  font-size: 1rem;
  color: #334155;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.dashboard-menu-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateX(2px);
}

.dashboard-menu-btn.active {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border-color: #86efac;
  color: #166534;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.dashboard-menu-btn .d-icon {
  font-size: 1.2rem;
}

.dashboard-panel {
  display: none;
  animation: slideDown 0.3s ease-out;
}

.dashboard-panel.active {
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Tutorial Grid Adjustments for Panel */
.tutorial-card-content {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Modern Segmented Control Dashboard */
.dashboard-modern-container {
  margin-bottom: 24px;
}

.dashboard-segmented-control {
  position: relative;
  display: flex;
  background: #f1f5f9;
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 16px;
  width: fit-content;
  border: 1px solid #e2e8f0;
}

.segmented-backdrop {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  width: 0;
  /* Will be set by JS */
  height: auto;
  transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
  z-index: 1;
  pointer-events: none;
}

.segmented-btn {
  position: relative;
  z-index: 2;
  border: none;
  background: transparent;
  padding: 8px 20px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #64748b;
  cursor: pointer;
  transition: color 0.2s;
  white-space: nowrap;
  border-radius: 8px;
}

.segmented-btn:hover {
  color: #334155;
}

.segmented-btn.active {
  color: #0f172a;
  font-weight: 600;
}

.dashboard-content-wrapper {
  position: relative;
}

.dashboard-panel {
  display: none;
  opacity: 0;
  transform: translateY(5px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.dashboard-panel.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Modern Card Tweaks */
.modern-card {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.2), 0 4px 6px -2px rgba(79, 70, 229, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.tutorial-card-content.modern-card-content {
  border: none;
  box-shadow: none;
  background: transparent;
  padding: 0;
}

.tutorial-card-content.modern-card-content .tutorial-grid {
  gap: 10px;
}

.tutorial-card-content.modern-card-content .tutorial-btn {
  background: white;
  color: #334155;
  border: 1px solid #e2e8f0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.tutorial-card-content.modern-card-content .tutorial-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* ============================================
   Hint System Styles
   ============================================ */

.hint-controls {
  margin-top: 16px;
  padding: 16px;
  background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  border: 1px solid #fde047;
  border-radius: 12px;
}

.hint-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: #78350f;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.25);
}

.hint-btn:hover {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
}

.hint-btn:disabled {
  background: #e5e7eb;
  color: #9ca3af;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.hint-icon {
  font-size: 1.1rem;
}

.hint-label {
  font-weight: 600;
}

.hint-cost-badge {
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.5);
}

.hint-cost-badge.free {
  background: #dcfce7;
  color: #166534;
}

.hint-cost-badge.paid {
  background: #fef3c7;
  color: #92400e;
}

.hint-cost-badge.max-reached {
  background: #fee2e2;
  color: #991b1b;
}

/* Hint Display Area */
.hint-display {
  margin-top: 16px;
  padding: 16px 20px;
  background: white;
  border: 1px solid #fde047;
  border-radius: 10px;
  animation: hintFadeIn 0.3s ease-out;
}

@keyframes hintFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hint-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.hint-level-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hint-type-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: #6b7280;
}

.hint-content {
  font-size: 1.05rem;
  line-height: 1.6;
  color: #1f2937;
}

.hint-content strong {
  color: #7c3aed;
  font-weight: 700;
}

/* Monospace text for letter hints */
.hint-text-mono {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  background: #f8fafc;
  padding: 12px 16px;
  border-radius: 8px;
  display: block;
  font-size: 1rem;
  line-height: 1.8;
  word-break: break-word;
  border: 1px solid #e2e8f0;
}

.hint-keyword {
  background: linear-gradient(135deg, #ddd6fe 0%, #c4b5fd 100%);
  padding: 2px 6px;
  border-radius: 4px;
  color: #5b21b6;
}

/* Hint progress indicator */
.hint-progress {
  display: flex;
  gap: 4px;
  margin-top: 12px;
  justify-content: center;
}

.hint-progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e5e7eb;
  transition: all 0.2s ease;
}

.hint-progress-dot.used {
  background: #8b5cf6;
}

.hint-progress-dot.current {
  background: #fbbf24;
  transform: scale(1.2);
}

/* Insufficient coins modal */
.hint-insufficient-modal {
  text-align: center;
  padding: 32px !important;
  max-width: 380px;
  border-top: 6px solid #f59e0b;
}

.hint-insufficient-icon {
  font-size: 3.5rem;
  margin-bottom: 12px;
}

.hint-insufficient-modal h2 {
  margin: 0 0 16px 0;
  color: #92400e;
  font-size: 1.5rem;
}

.hint-insufficient-modal p {
  color: #6b7280;
  margin-bottom: 20px;
}

.hint-insufficient-modal .coin-display {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
}

.hint-insufficient-modal .coin-needed,
.hint-insufficient-modal .coin-have {
  text-align: center;
}

.hint-insufficient-modal .coin-value {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.hint-insufficient-modal .coin-needed .coin-value {
  color: #dc2626;
}

.hint-insufficient-modal .coin-have .coin-value {
  color: #65a30d;
}

.hint-insufficient-modal .coin-label {
  font-size: 0.85rem;
  color: #6b7280;
  margin-top: 4px;
}

/* ============================================
   Dashboard Segmented Control (Modern Pill Switcher)
   ============================================ */
.dashboard-modern-container {
  margin-bottom: 24px;
}

.dashboard-segmented-control {
  display: inline-flex;
  position: relative;
  background: #f1f5f9;
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 16px;
}

.segmented-backdrop {
  position: absolute;
  top: 4px;
  left: 4px;
  height: calc(100% - 8px);
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  z-index: 0;
}

.segmented-btn {
  position: relative;
  z-index: 1;
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: #64748b;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.segmented-btn.active {
  color: #1e293b;
}

.segmented-btn:hover:not(.active) {
  color: #334155;
}

/* Dashboard panels - use visibility instead of display to prevent layout shift */
.dashboard-panel {
  display: none;
}

.dashboard-panel.active {
  display: block;
}

/* Ensure consistent content area width */
.dashboard-content-wrapper {
  min-height: 100px;
  /* Prevents collapse when empty */
}

/* SRS and Tutorial cards within panels */
.dashboard-card {
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.dashboard-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.15);
}

/* Removed legacy conflicting .modern-card styles */

/* Removed legacy conflicting .modern-card text styles */

.dashboard-cta-icon {
  font-size: 1.5rem;
  opacity: 0.8;
}

.dashboard-srs-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  font-size: 0.9rem;
}

/* Tutorial grid in Learning Center */
.tutorial-card-content {
  padding: 16px 0;
}

/* Removed legacy conflicting .tutorial-grid styles */

.tutorial-grid .tutorial-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
  font-weight: 500;
  color: #334155;
}

.tutorial-grid .tutorial-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.tutorial-grid .tutorial-btn .t-icon {
  font-size: 1.5rem;
}

/* Legacy Mode Switch Buttons - Refactored for Neutrality
.mode-switch-btn {
   This is now handled by the .modern-card class in the dashboard
}

.mode-switch-btn.active {
   Removed solid green gradient to prevent legibility issues
} */

/* What's this? Container */
.whats-this-container {
  display: flex;
  justify-content: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed #e5e7eb;
}

/* Orange variant for What's this? button */
.what-is-this-btn.orange {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.what-is-this-btn.orange:hover {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
}

.what-is-this-btn.orange .icon {
  font-size: 1.2rem;
}



/* ============================================
   What\'s this? Button & Tabs Header
   ============================================ */
.tabs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 2px solid #e5e7eb;
}

.tabs-header .tabs {
  margin-bottom: 0;
  border-bottom: none;
}

.what-is-this-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  color: #64748b;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.what-is-this-btn:hover {
  background: #f8fafc;
  color: #334155;
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

.what-is-this-btn .icon {
  font-size: 1.1rem;
}

/* ============================================
   SRS Schedule Table
   ============================================ */
.srs-schedule-container {
  margin-top: 32px;
  background: white;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.schedule-header {
  padding: 16px 20px;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.schedule-header h4 {
  margin: 0;
  font-size: 1rem;
  color: #1e293b;
  font-weight: 600;
}

.schedule-stats {
  font-size: 0.85rem;
  color: #64748b;
  font-weight: 500;
  background: #f1f5f9;
  padding: 4px 10px;
  border-radius: 20px;
}

.schedule-table-wrapper {
  overflow-x: auto;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.schedule-table th {
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #64748b;
  background: #f8fafc;
  border-bottom: 1px solid #f1f5f9;
}

.schedule-table td {
  padding: 14px 20px;
  font-size: 0.95rem;
  color: #334155;
  border-bottom: 1px solid #f1f5f9;
}

.schedule-table tr:last-child td {
  border-bottom: none;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

.schedule-table tr:hover td {
  background: #fcfdfe;
}

.loading-schedule,
.empty-schedule {
  text-align: center;
  padding: 40px !important;
  color: #94a3b8;
  font-style: italic;
}

.status-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-learning {
  background: #dcfce7;
  color: #166534;
}

.status-review {
  background: #fef9c3;
  color: #854d0e;
}

.status-mastered {
  background: #dbeafe;
  color: #1e40af;
}

.next-review-time {
  font-size: 0.9rem;
  color: #64748b;
}

.next-review-time.due {
  color: #ef4444;
  font-weight: 600;
}

/* ============================================
   Difficulty Badge
   ============================================ */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.main-header h1 {
  margin-bottom: 0;
}

.difficulty-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid #bae6fd;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: help;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.difficulty-badge:hover {
  background: #e0f2fe;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.difficulty-badge .diff-icon {
  font-size: 1.1em;
}

.difficulty-badge.level-1 {
  background: #ecfdf5;
  color: #047857;
  border-color: #a7f3d0;
}

.difficulty-badge.level-2 {
  background: #fff7ed;
  color: #c2410c;
  border-color: #fed7aa;
}

.difficulty-badge.level-3 {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: #bfdbfe;
}


/* Difficulty Integration: SRS */
.srs-flashcard.diff-hide-def .srs-flashcard-back .definition,
.srs-flashcard.diff-hide-def .srs-flashcard-back .example,
.srs-flashcard.diff-hide-def .srs-flashcard-back .pos-tag {
  filter: blur(4px);
  opacity: 0.5;
  transition: all 0.3s ease;
}

.srs-flashcard.diff-hide-def .srs-flashcard-back:hover .definition,
.srs-flashcard.diff-hide-def .srs-flashcard-back:hover .example,
.srs-flashcard.diff-hide-def .srs-flashcard-back:hover .pos-tag {
  filter: none;
  opacity: 1;
}

/* ============================================
   UI Fixes & Cleanup
   ============================================ */

/* Hide Legacy Hint System */
#hint-display-type,
#hint-controls-type {
  display: none !important;
}

/* Vocabulary Practice Styling */
.vocabulary-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  background: #f8fafc;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.vocabulary-item .vocabulary-word {
  font-weight: 600;
  color: #334155;
}

.vocabulary-play-btn,
.vocabulary-check-btn {
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  color: white;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.vocabulary-play-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.vocabulary-play-btn:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.vocabulary-check-btn {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
}

.vocabulary-check-btn:hover {
  background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
}

.vocabulary-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.95rem;
  min-width: 120px;
}

.vocabulary-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ============================================
   Vocabulary Practice (Main Flow Section)
   ============================================ */
.vocabulary-practice {
  margin-top: 32px;
  padding: 28px;
  background: white;
  border-radius: 20px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05),
    0 8px 10px -6px rgba(0, 0, 0, 0.03);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.vocabulary-header {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.vocabulary-header span {
  font-size: 1.5rem;
  font-weight: 800;
  color: #1e293b;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #1e293b 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.vocabulary-header::before {
  content: '';
  font-size: 1.6rem;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.vocabulary-subheader {
  margin-bottom: 28px;
  padding-left: 36px;
}

.vocabulary-subheader span {
  font-size: 1.05rem;
  color: #64748b;
  font-weight: 500;
  display: inline-block;
  position: relative;
}

.vocabulary-subheader span::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 48px;
  height: 3px;
  background: #3b82f6;
  border-radius: 3px;
  opacity: 0.6;
}

/* Modernizing the items within the section */
.vocabulary-item {
  background: #f8fafc;
  border: 1px solid #f1f5f9;
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 18px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.vocabulary-item:hover {
  background: white;
  border-color: #dbeafe;
  box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.1);
  transform: translateX(6px);
}

.vocabulary-word {
  font-weight: 700;
  color: #0f172a;
  font-size: 1.15rem;
  min-width: 150px;
  letter-spacing: -0.01em;
}

.vocabulary-input {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.2s ease;
  background-color: white;
  font-weight: 500;
}

.vocabulary-input:focus {
  border-color: #3b82f6;
  outline: none;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
  transform: scale(1.01);
}

.vocabulary-play-btn,
.vocabulary-check-btn {
  padding: 10px 20px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.vocabulary-play-btn {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

.vocabulary-play-btn:hover {
  background: #e2e8f0;
  color: #1e293b;
  transform: translateY(-2px);
}

.vocabulary-check-btn {
  background: #10b981;
  color: white;
  border: none;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.vocabulary-check-btn:hover {
  background: #059669;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
}

.vocabulary-status {
  min-width: 140px;
  font-size: 0.95rem;
  font-weight: 700;
  text-align: right;
}

.vocabulary-status.correct {
  color: #059669;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.vocabulary-status.correct::before {
  content: '';
}

.vocabulary-status.incorrect {
  color: #ef4444;
}



/* Table Expansion Styles */
.vocab-row-main {
  border-bottom: none !important;
}

.vocab-row-details {
  background: #fdfdfd;
}

.vocab-table-details-content {
  padding: 8px 16px 16px 16px;
  border-top: 1px dashed #e2e8f0;
}

.vocab-table-sentences {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vocab-table-sentence {
  padding: 6px 0;
  border-bottom: 1px solid #f8fafc;
}

.vocab-table-sentence:last-child {
  border-bottom: none;
}

.vocab-table-sentence .vi {
  color: #1e293b;
  font-weight: 500;
  font-size: 0.9rem;
}

.vocab-table-sentence .en {
  color: #64748b;
  font-size: 0.8rem;
  margin-top: 2px;
}

/* ============================================
   Writing Challenge Selection UI
   ============================================ */
.writing-option-container {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  justify-content: center;
  width: 100%;
}

.writing-option-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s;
  width: 45%;
  text-align: left;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.writing-option-card:hover {
  border-color: #6366f1;
  transform: translateY(-2px);
  box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.1);
}

.writing-option-card .option-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.writing-option-card .option-icon {
  font-size: 1.2rem;
}

.writing-option-card .option-source {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
}

.writing-option-card .badge-pte {
  background: #e0e7ff;
  color: #4338ca;
}

.writing-option-card .badge-common {
  background: #f1f5f9;
  color: #475569;
}

.writing-option-card .option-text {
  font-size: 1.05rem;
  color: #1e293b;
  font-weight: 600;
}

/* AI Feedback Styles */
.ai-feedback-container {
  text-align: left;
  background: #f8fafc;
  border-radius: 8px;
  padding: 12px;
  border-left: 4px solid #3b82f6;
}

.ai-score-badge {
  font-size: 1.2em;
  font-weight: bold;
  color: #1d4ed8;
  margin-bottom: 8px;
  display: inline-block;
}

.feedback-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feedback-list li {
  margin-bottom: 6px;
  line-height: 1.4;
}

.ai-feedback-container details {
  margin-top: 8px;
  color: #64748b;
  font-size: 0.9em;
  cursor: pointer;
}


/* ============================================
   Adaptive Difficulty: Premium UI Components
   ============================================ */

/* HEXAGON BADGE (Stats Panel) */
.difficulty-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: 4px;
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0% 100%);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  color: white;
  /* Default text color for dark backgrounds */
}

.difficulty-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: 0.5s;
}

.difficulty-badge:hover::before {
  left: 100%;
}

/* CEFR Level Colors (Neon/Glass Style) */
.difficulty-badge.level-1 {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

/* Green */
.difficulty-badge.level-2 {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

/* Blue */
.difficulty-badge.level-3 {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

/* Purple */
.difficulty-badge.level-4 {
  background: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
  box-shadow: 0 0 10px rgba(236, 72, 153, 0.4);
}

/* Pink */
.difficulty-badge.level-5 {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.6);
  border: 1px solid rgba(255, 215, 0, 0.5);
}

/* Gold/Amber */
.difficulty-badge.level-6 {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.8), inset 0 0 10px rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fbbf24;
  /* Gold text */
}

/* Obsidian/Black - Elite */

/* ASCENSION MODAL (Level Up) */
#ascension-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.9);
  z-index: 20000;
  display: none;
  /* Flex when active */
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.ascension-content {
  text-align: center;
  transform: scale(0.8);
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ascension-icon {
  font-size: 6rem;
  margin-bottom: 20px;
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.6));
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

#ascension-modal h2 {
  font-size: 4rem;
  margin: 0;
  background: linear-gradient(to right, #fcd34d, #d97706, #fcd34d);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 3s linear infinite;
  text-transform: uppercase;
  letter-spacing: 2px;
}

@keyframes shine {
  to {
    background-position: 200% center;
  }
}

.ascension-level {
  font-size: 2.5rem;
  margin: 10px 0;
  color: white;
  font-weight: 800;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

.ascension-sub {
  color: #94a3b8;
  font-size: 1.2rem;
  letter-spacing: 1px;
}

/* SETTINGS MODAL OVERRIDES (Glassmorphism) */
.shop-modal {
  background: rgba(15, 23, 42, 0.6) !important;
  backdrop-filter: blur(8px) !important;
}

.shop-modal-content {
  background: rgba(255, 255, 255, 0.95) !important;
  border: 1px solid rgba(255, 255, 255, 0.5) !important;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25) !important;
}


/* TOAST NOTIFICATIONS (Adaptive Difficulty) */
#difficulty-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 25000;
  /* Above modals */
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  font-weight: 500;
  pointer-events: auto;
  min-width: 280px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-left: 6px solid var(--primary);
}

.toast.success {
  border-left-color: var(--success);
  color: var(--success-text);
}

.toast.info {
  border-left-color: var(--warning);
  color: var(--warning-text);
}

.toast.error {
  border-left-color: var(--danger);
  color: var(--danger-text);
}

/* Difficulty Settings Modal Specifics */
#difficulty-settings-modal .toggle-switch {
  margin-left: auto;
}


/* Settings Modal (Adaptive Difficulty) */
.setting-group {
  margin-bottom: 24px;
  background: var(--bg-main);
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.setting-group:hover {
  background: white;
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.setting-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 1.1rem;
  color: #1e293b;
}

.setting-desc {
  color: #64748b;
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.5;
}

.setting-select {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  font-size: 1rem;
  color: var(--text-main);
  background-color: white;
  transition: var(--transition-base);
}

.setting-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}


/* Responsive Adjustments for Ascension */
@media (max-width: 768px) {
  #ascension-modal h2 {
    font-size: 2.5rem;
  }

  .ascension-level {
    font-size: 1.8rem;
  }

  .ascension-icon {
    font-size: 4rem;
  }
}

/* ============================================
   Adaptive Engine Profile Modal
   ============================================ */
.adaptive-engine-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 15000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ae-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.ae-content {
  position: relative;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl, 24px);
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.15);
  width: 90%;
  max-width: 420px;
  overflow: hidden;
  animation: aeSlideIn 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes aeSlideIn {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.ae-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.ae-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ae-status-dot {
  width: 10px;
  height: 10px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
  animation: aePulse 2s ease-in-out infinite;
}

@keyframes aePulse {

  0%,
  100% {
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
  }

  50% {
    box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.1);
  }
}

.ae-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  letter-spacing: 0.02em;
}

.ae-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.ae-close-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-main);
}

.ae-body {
  padding: 20px;
}

.ae-main-stat {
  text-align: center;
  margin-bottom: 20px;
}

.ae-main-stat .ae-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.ae-level-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.01em;
}

.ae-mode-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.ae-mode-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-light);
  background: white;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition-fast);
}

.ae-mode-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.ae-mode-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.ae-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.ae-stat-item {
  background: var(--bg-main);
  padding: 14px;
  border-radius: var(--radius-md);
  text-align: center;
}

.ae-stat-item .ae-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.ae-stat-item .ae-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.ae-progress-mini {
  height: 6px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 3px;
  margin-top: 8px;
  overflow: hidden;
}

.ae-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #22c55e, #4ade80);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.ae-progress-fill.brand {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
}

.ae-divider {
  height: 1px;
  background: rgba(0, 0, 0, 0.06);
  margin: 16px 0;
}

.ae-adjustments h4 {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 12px 0;
}

.ae-adj-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.ae-adj-item:last-child {
  border-bottom: none;
}

.ae-adj-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.ae-adj-val {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

.ae-footer {
  text-align: center;
  margin-top: 20px;
}

.ae-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ae-badge.promoting {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.ae-badge.stable {
  background: var(--bg-input);
  color: var(--text-muted);
}

.ae-badge.optimizing {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

/* Mobile Responsive */
@media (max-width: 480px) {
  .ae-content {
    width: 95%;
    max-width: none;
    margin: 16px;
    border-radius: var(--radius-lg);
  }

  .ae-stats-grid {
    grid-template-columns: 1fr;
  }

  .ae-mode-tabs {
    flex-wrap: wrap;
  }
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;

  /* =========================================
   LEVEL SYSTEM & SKILL TREE STYLES
   ========================================= */
}

/* Closing .header-left */

.level-system-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 10px;
}

/* Level Header Summary */
.level-header-summary {
  display: flex;
  align-items: center;
  gap: 20px;
  background: white;
  padding: 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.level-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  flex-shrink: 0;
}

.lvl-label {
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0.9;
  text-transform: uppercase;
}

.lvl-value {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.level-progress-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.xp-text {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.current-xp {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.next-xp {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.xp-bar-bg {
  height: 12px;
  background: #e2e8f0;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
  border-radius: 6px;
  transition: width 0.5s ease-out;
}

.next-level-distsance {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: right;
}

/* Skill Tree List */
.skill-tree-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.skill-item {
  position: relative;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s ease;
  overflow: hidden;
}

.skill-item.locked {
  background: #f8fafc;
  opacity: 0.8;
  filter: grayscale(0.8);
}

/* Available to buy (Level met, but not purchased) */
.skill-item.available {
  background: white;
  border-color: var(--primary);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.skill-item.unlocked {
  border-color: var(--primary-light);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.1);
  background: linear-gradient(to right, #fff, #fefeff);
}

.skill-icon {
  font-size: 2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f1f5f9;
  border-radius: 12px;
  flex-shrink: 0;
}

.skill-item.unlocked .skill-icon {
  background: #e0e7ff;
}

.skill-item.available .skill-icon {
  background: #fff7ed;
  /* Light orange tint for available */
}

.skill-info {
  flex: 1;
  min-width: 0;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.skill-title {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1rem;
}

.skill-level-req {
  font-size: 0.75rem;
  background: #cbd5e1;
  color: #475569;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

/* Buy Button */
.skill-buy-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.2;
}

.skill-buy-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.skill-buy-btn:disabled {
  background: #94a3b8;
  cursor: not-allowed;
  transform: none;
}

.cost-badge {
  font-size: 0.7rem;
  opacity: 0.9;
}

.skill-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}

.skill-action {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  /* Ensure space for button */
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 6px;
  text-transform: uppercase;
}

.status-badge.unlocked {
  color: var(--primary);
  background: #e0e7ff;
}

/* Mini Ring for Locked Progress */
.progress-ring-mini {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: conic-gradient(var(--primary) calc(var(--p) * 1%), #e2e8f0 0);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.progress-ring-mini::before {
  content: '';
  position: absolute;
  inset: 4px;
  background: white;
  border-radius: 50%;
}

.progress-ring-mini span {
  position: relative;
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-secondary);
  z-index: 1;
}

.skill-overlay {
  position: absolute;
  inset: 0;
  background: transparent;
  cursor: not-allowed;
  z-index: 10;
}

/* Mobile Responsiveness for Level System */
@media (max-width: 480px) {
  .level-header-summary {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .xp-text {
    justify-content: center;
    gap: 12px;
  }

  .next-level-distsance {
    text-align: center;
  }

  .skill-tree-list {
    grid-template-columns: 1fr;
  }
}

/* Mode Pill Indicator (Header-Integrated) */
.mode-pill-indicator {
  display: inline-flex;
  align-items: center;
  background: #f1f5f9;
  border-radius: 20px;
  padding: 4px 4px 4px 12px;
  border: 1px solid #e2e8f0;
  gap: 8px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  animation: slideInLeft 0.5s ease-out;
}

.mode-pill-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mode-pill-tutorial {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1px solid #cbd5e1;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  color: #64748b;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mode-pill-tutorial:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: scale(1.1);
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== SURVIVAL GAME STYLES ===== */
.survival-game-overlay {
  --surv-bg: radial-gradient(circle at 50% 50%, #f1ede4 0%, #e1ddd4 65%, #d2cdbf 100%);
  --surv-accent: #b24c4c;
  --surv-text: #2f2f2f;

  position: fixed;
  inset: 0;
  background: var(--surv-bg);
  z-index: 99999;
  display: flex;
  color: var(--surv-text);
  font-family: 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  overflow: hidden;
  isolation: isolate;
}

body.survival-active .modal,
body.survival-active .entry-modal,
body.survival-active .progress-panel-side,
body.survival-active .vocab-panel-side,
body.survival-active .srs-panel,
body.survival-active .srs-overlay,
body.survival-active .auth-overlay,
body.survival-active .progress-panel-overlay,
body.survival-active .vocab-panel-overlay,
body.survival-active .guest-toast,
body.survival-active .feedback-toast,
body.survival-active .vocab-alert-modal,
body.survival-active .vocab-add-modal,
body.survival-active #shop-modal,
body.survival-active #level-system-container {
  display: none !important;
  visibility: hidden !important;
}

#survival-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  z-index: 1;
}

.survival-hud {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: auto;
  pointer-events: none;
  display: flex;
  flex-direction: row;
  gap: 10px;
  z-index: 10;
}

.hud-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(47, 47, 47, 0.75);
}

.hud-score span,
.hud-wave span {
  color: var(--surv-accent);
}

.hud-time {
  font-size: 20px;
  letter-spacing: 0.22em;
  color: rgba(47, 47, 47, 0.8);
}

.hud-weapon {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(47, 47, 47, 0.6);
}

.hud-wordrush {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: rgba(47, 47, 47, 0.55);
}

.hud-wordrush.is-active {
  color: rgba(0, 208, 132, 0.85);
}

.survival-track-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: auto;
}

.survival-track-btn {
  border: 1px solid rgba(0, 0, 0, 0.14);
  border-radius: 999px;
  background: rgba(247, 246, 242, 0.84);
  color: rgba(47, 47, 47, 0.8);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 10px;
  cursor: pointer;
}

.survival-track-btn:hover {
  background: #faf7f0;
}

.survival-track-label {
  min-width: 120px;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(47, 47, 47, 0.66);
}

.survival-audio-controls {
  position: relative;
  pointer-events: auto;
}

.survival-audio-toggle {
  min-width: 68px;
}

.survival-audio-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 260px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.14);
  background: rgba(247, 246, 242, 0.95);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(2px);
  z-index: 22;
}

.survival-audio-panel[hidden] {
  display: none !important;
}

.survival-audio-row {
  display: grid;
  grid-template-columns: 34px 1fr 42px;
  align-items: center;
  gap: 8px;
}

.survival-audio-name,
.survival-audio-value {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(47, 47, 47, 0.74);
}

.survival-audio-value {
  text-align: right;
}

.survival-audio-row input[type="range"] {
  width: 100%;
  accent-color: #b24c4c;
}

.survival-setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.survival-setting-btn {
  min-width: 92px;
}

.hud-hp-container {
  display: none;
}

.hud-hp-bar {
  height: 100%;
}

.hud-hp-bar .hp-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--surv-red), #fa5252 55%, var(--surv-amber));
  transition: width 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 0 18px rgba(255, 107, 107, 0.34);
  position: relative;
  overflow: hidden;
}

.hud-hp-bar .hp-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0));
  transform: translateX(-60%);
  animation: survival-sheen 2.6s linear infinite;
}

.survival-game-overlay .survival-xp {
  position: absolute;
  top: 74px;
  bottom: auto;
  left: 50%;
  transform: translateX(-50%);
  width: min(320px, 85%);
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 10;
}

.survival-game-overlay .xp-bar {
  flex: 1;
  width: 100%;
  height: 4px;
  background: rgba(0, 0, 0, 0.12);
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.survival-game-overlay .xp-bar-fill {
  height: 100%;
  width: 0%;
  background: #b24c4c;
  box-shadow: none;
  transition: width 140ms linear;
}

.survival-game-overlay .xp-level {
  flex: 0 0 auto;
  display: none;
}

/* Dashboard Card Visuals: Survival */
.visual-survival {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #fb7185;
}

.visual-survival .ctx-icon {
  filter: drop-shadow(0 0 8px rgba(251, 113, 133, 0.4));
}

.enemy-glitch {
  animation: glitch-jump 3s infinite;
}

.enemy-glitch:nth-child(2) {
  animation-delay: 0.5s;
}

.enemy-glitch:nth-child(3) {
  animation-delay: 1.2s;
}

.laser-beam {
  animation: laser-pulse 1.5s infinite;
}

.player-ring {
  animation: ring-pulse 2s infinite;
  transform-origin: 55px 36px;
}

@keyframes glitch-jump {

  0%,
  100% {
    transform: translate(0, 0);
  }

  10% {
    transform: translate(-2px, 3px);
  }

  20% {
    transform: translate(3px, -2px);
  }

  30% {
    transform: translate(-1px, 2px);
  }

  40% {
    transform: translate(2px, -1px);
  }
}

@keyframes laser-pulse {

  0%,
  100% {
    opacity: 0.2;
    stroke-dashoffset: 0;
  }

  50% {
    opacity: 1;
    stroke-dashoffset: 10;
  }
}

@keyframes ring-pulse {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }

  50% {
    transform: scale(1.4);
    opacity: 0;
  }

  100% {
    transform: scale(1);
    opacity: 0;
  }
}

.survival-modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #f7f6f2;
  color: #2f2f2f;
  padding: 34px 30px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.18);
  z-index: 20;
  animation: survival-modal-in 240ms cubic-bezier(0.2, 1, 0.2, 1) both;
}

.survival-modal h2,
.survival-modal h1 {
  margin-top: 0;
  color: var(--surv-accent);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.survival-enemy-tutorial-modal {
  width: min(760px, calc(100vw - 46px));
  max-width: min(760px, calc(100vw - 46px));
  padding: 28px 28px;
  text-align: left;
}

.survival-enemy-tutorial-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
}

.survival-enemy-tutorial-image {
  width: 100%;
  max-width: 220px;
  height: auto;
  border-radius: 16px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.65);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.12);
}

.survival-enemy-tutorial-text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(47, 47, 47, 0.78);
}

.survival-enemy-tutorial-bullets {
  margin-top: 12px;
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  color: rgba(47, 47, 47, 0.72);
}

.survival-enemy-tutorial-actions {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.survival-enemy-tutorial-actions .btn-primary {
  background: var(--surv-accent);
  box-shadow: 0 6px 18px rgba(178, 76, 76, 0.35);
}

.survival-enemy-tutorial-actions .btn-primary:hover {
  background: #a34444;
  box-shadow: 0 8px 22px rgba(178, 76, 76, 0.42);
}

@media (max-width: 520px) {
  .survival-enemy-tutorial-modal {
    padding: 22px 18px;
    text-align: center;
  }

  .survival-enemy-tutorial-body {
    grid-template-columns: 1fr;
  }

  .survival-enemy-tutorial-image {
    max-width: 100%;
    margin: 0 auto;
  }

  .survival-enemy-tutorial-actions {
    justify-content: center;
  }
}

.gameover-title {
  font-size: 3rem;
  color: #ff6b6b !important;
  text-shadow: 0 0 20px rgba(255, 107, 107, 0.5);
}

.final-stats {
  font-size: 1.5rem;
  margin: 20px 0;
}

.gameover-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.survival-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.12);
  color: rgba(0, 0, 0, 0.65);
  font-size: 28px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
  z-index: 30;
  display: grid;
  place-items: center;
}

.upgrade-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.upgrade-card {
  background: #f4f1ea;
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  cursor: default;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  transition: all 0.2s;
}

.upgrade-card:hover {
  transform: translateY(-4px);
  background: #faf7f0;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}

.upgrade-icon-wrap {
  width: 56px;
  height: 56px;
  margin: 0 auto 10px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.48);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.upgrade-icon {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.upgrade-target {
  margin: 8px 0 0;
  font-size: 11px;
  color: rgba(47, 47, 47, 0.65);
}

.upgrade-command {
  margin: 10px 0 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(47, 47, 47, 0.72);
}

@keyframes survival-sheen {
  0% {
    transform: translateX(-60%);
  }

  100% {
    transform: translateX(60%);
  }
}

@keyframes survival-hud-in {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(-8px);
  }

  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes survival-xp-in {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }

  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes survival-modal-in {
  0% {
    opacity: 0;
    transform: translate(-50%, -46%) scale(0.98);
  }

  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@media (max-width: 720px) {
  .survival-hud {
    left: 50%;
    transform: translateX(-50%);
    gap: 6px;
    flex-direction: column;
    align-items: center;
  }

  .hud-top {
    font-size: 11px;
  }

  .survival-track-label {
    max-width: 180px;
  }

  .survival-audio-panel {
    right: auto;
    left: 50%;
    transform: translateX(-50%);
    width: min(280px, 90vw);
  }

  .upgrade-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   LingoRPG Skill Tree Final Theme (Dragon Nest / 3D Metallic Refined)
   ========================================================================== */

:root {
  --active: #3b82f6;
  --activeGlow: rgba(59, 130, 246, 0.4);
  --passive: #f59e0b;
  --passiveGlow: rgba(245, 158, 11, 0.3);
  --rpg-panel-bg: #f8fafc;
  --rpg-metal-border: #94a3b8;
  --rpg-text: #334155;
  --rpg-text-muted: #64748b;
}

.rpg-main-layout {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 420px;
  height: 90vh;
  max-height: 1200px;
  background: var(--rpg-panel-bg);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--rpg-metal-border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  color: var(--rpg-text);
}

.rpg-sidebar {
  background: #f1f5f9;
  border-right: 1px solid #cbd5e1;
  display: flex;
  flex-direction: column;
  padding: 12px;
}

.rpg-sidebar-header {
  font-size: 10px;
  font-weight: 800;
  color: #94a3b8;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  text-align: center;
}

.rpg-category-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rpg-cat-btn {
  width: 100%;
  padding: 12px 8px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: #64748b;
  font-weight: 700;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.rpg-cat-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  color: #1e293b;
}

.rpg-cat-btn.active {
  background: white;
  color: #3b82f6;
  border-color: #cbd5e1;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.rpg-sidebar-footer {
  margin-top: auto;
  padding: 12px;
  background: #e2e8f0;
  border-radius: 12px;
  text-align: center;
}

.rpg-coins-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-weight: 800;
  color: #b45309;
}

.rpg-tree-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
  border-radius: 20px;
  background:
    radial-gradient(ellipse at 50% 5%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid #334155;
  overflow: hidden;
  box-shadow: inset 0 2px 20px rgba(0, 0, 0, 0.3);
  margin: 14px;
  min-height: 0;
}

.rpg-tree-toolbar {
  position: relative;
  z-index: 4;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  padding: 12px 14px 0;
}

.rpg-tree-gesture-hint {
  margin-right: auto;
  color: #94a3b8;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
  opacity: 0.95;
}

.rpg-zoom-btn,
.rpg-zoom-reset {
  height: 34px;
  min-width: 34px;
  border-radius: 10px;
  border: 1px solid #334155;
  background: rgba(15, 23, 42, 0.75);
  color: #e2e8f0;
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.rpg-zoom-reset {
  padding: 0 10px;
  min-width: 56px;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.rpg-zoom-btn:hover,
.rpg-zoom-reset:hover {
  background: rgba(30, 41, 59, 0.92);
  border-color: #64748b;
}

.rpg-zoom-value {
  min-width: 52px;
  text-align: center;
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid #334155;
  background: rgba(15, 23, 42, 0.6);
  color: #cbd5e1;
  font-size: 0.76rem;
  font-weight: 700;
}

.rpg-tree-viewport {
  position: relative;
  flex: 1;
  min-height: 0;
  margin: 10px 12px 12px;
  border-radius: 16px;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  border: 1px solid rgba(100, 116, 139, 0.25);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.6), rgba(2, 6, 23, 0.45));
}

.rpg-tree-viewport.is-grabbing {
  cursor: grabbing;
}

.rpg-tree-viewport.is-gliding {
  cursor: grabbing;
}

.rpg-tree-viewport.is-pinching {
  cursor: zoom-in;
}

.rpg-tree-scene {
  position: relative;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  will-change: transform;
}

.rpg-tree-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(100, 116, 139, 0.15) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.6;
}

.rpg-tree-nodes {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.rpg-tree-svg-container {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.rpg-links-svg {
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* --- Node Styling (Dark RPG) --- */
.rpg-node {
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 18px;
  background: linear-gradient(145deg, #334155, #1e293b);
  border: 2px solid #475569;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.rpg-node:hover {
  transform: translate(-50%, -50%) scale(1.12);
  z-index: 100;
  border-color: #94a3b8;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.rpg-node.node-selected {
  border-color: #60a5fa;
  box-shadow: 0 0 24px var(--activeGlow), inset 0 0 0 1px rgba(96, 165, 250, 0.3);
}

/* Acquired (unlocked) node — bright, golden border */
.rpg-node.acquired {
  background: linear-gradient(145deg, #374151, #1f2937);
  border-color: #fbbf24;
  box-shadow: 0 0 12px rgba(251, 191, 36, 0.2), 0 4px 16px rgba(0, 0, 0, 0.3);
}

.rpg-node.acquired .rpg-orb {
  border-color: #fbbf24;
}

/* Available node — pulsing glow */
.rpg-node.available {
  border-color: #34d399;
  animation: rpg-node-pulse 2s ease-in-out infinite;
}

@keyframes rpg-node-pulse {

  0%,
  100% {
    box-shadow: 0 0 8px rgba(52, 211, 153, 0.2), 0 4px 16px rgba(0, 0, 0, 0.3);
  }

  50% {
    box-shadow: 0 0 20px rgba(52, 211, 153, 0.5), 0 4px 16px rgba(0, 0, 0, 0.3);
  }
}

/* Locked node */
.rpg-node.locked {
  filter: brightness(0.5) saturate(0.3);
  opacity: 0.55;
}

.rpg-node.locked:hover {
  filter: brightness(0.7) saturate(0.5);
  opacity: 0.7;
}

/* Root node — larger, special glow */
.rpg-node.root {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  background: linear-gradient(145deg, #1e3a5f, #0c1f3d);
  border: 2px solid #60a5fa;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.25), 0 6px 24px rgba(0, 0, 0, 0.4);
}

.rpg-orb {
  width: 78px;
  height: 78px;
  border-radius: 14px;
  background: radial-gradient(circle at 35% 30%, #4b5563, #1f2937 100%);
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  border: 2px solid #374151;
}

.root .rpg-orb {
  width: 84px;
  height: 84px;
  border-radius: 18px;
}

.active .rpg-orb {
  background: #ffffff;
  border-color: #60a5fa;
  box-shadow: inset 0 4px 12px rgba(255, 255, 255, 0.5), 0 0 10px var(--activeGlow);
}

.passive .rpg-orb {
  background: #ffffff;
  border-color: #fcd34d;
  box-shadow: inset 0 4px 12px rgba(255, 255, 255, 0.5), 0 0 10px var(--passiveGlow);
}

.rpg-icon {
  width: 60px !important;
  height: 60px !important;
  object-fit: contain;
  z-index: 2;
}

.root .rpg-icon {
  width: 68px !important;
  height: 68px !important;
}

.rpg-rank {
  position: absolute;
  top: -6px;
  right: -6px;
  background: #0f172a;
  color: #fbbf24;
  font-size: 9px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid #475569;
  z-index: 20;
  letter-spacing: 0.02em;
}

.rpg-node.acquired .rpg-rank {
  background: #422006;
  border-color: #fbbf24;
}

/* Plus indicator for available nodes */
.rpg-plus {
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  background: #059669;
  color: white;
  font-size: 11px;
  font-weight: 900;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  border: 1px solid #0f172a;
}

/* Available dot */
.rpg-dot {
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  z-index: 20;
  box-shadow: 0 0 6px #34d399;
}

/* --- Connection Lines --- */
.rpg-link {
  stroke: #475569;
  stroke-width: 2;
  opacity: 0.5;
  stroke-linecap: round;
  fill: none;
}

.rpg-link.active {
  stroke: #60a5fa;
  stroke-dasharray: 8 4;
  stroke-width: 2.5;
  opacity: 0.8;
}

.rpg-link.passive {
  stroke: #fbbf24;
  stroke-width: 2.5;
  opacity: 0.7;
}

.rpg-link.root {
  stroke: #60a5fa;
  stroke-width: 3;
  opacity: 0.8;
  filter: drop-shadow(0 0 2px #60a5fa);
}

/* ==========================================================================
   Mobile Responsive Adjustments for Skill Tree
   ========================================================================== */
@media (max-width: 900px) {
  .rpg-main-layout {
    display: flex;
    flex-direction: column;
    height: 85vh;
    height: 85dvh;
    min-height: 560px;
    border-radius: 12px;
  }

  /* Sidebar becomes a top horizontal scroller */
  .rpg-sidebar {
    width: 100%;
    height: auto;
    flex-direction: row;
    padding: 8px;
    border-right: none;
    border-bottom: 1px solid #334155;
    overflow-x: auto;
    white-space: nowrap;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
    background: #0f172a;
    /* Match dark theme */
  }

  .rpg-sidebar::-webkit-scrollbar {
    display: none;
  }

  .rpg-sidebar-header,
  .rpg-sidebar-footer {
    display: none;
  }

  .rpg-category-list {
    flex-direction: row;
    width: max-content;
    gap: 10px;
    padding-right: 4px;
  }

  .rpg-cat-btn {
    width: auto;
    padding: 7px 14px;
    background: #1e293b;
    border: 1px solid #334155;
    color: #94a3b8;
    border-radius: 20px;
    font-size: 11px;
    scroll-snap-align: start;
    touch-action: manipulation;
  }

  .rpg-cat-btn.active {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
  }

  /* Tree Container */
  .rpg-tree-container {
    flex: 1;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0;
    border-radius: 0;
    border: none;
  }

  .rpg-tree-wrap {
    margin: 0;
    min-height: 0;
    border-radius: 0;
    border: none;
  }

  .rpg-tree-toolbar {
    padding: 10px 10px 0;
    gap: 6px;
    flex-wrap: wrap;
  }

  .rpg-tree-gesture-hint {
    width: 100%;
    margin-right: 0;
    font-size: 0.66rem;
    color: #a5b4fc;
    letter-spacing: 0.02em;
  }

  .rpg-tree-viewport {
    margin: 8px 8px 10px;
    border-radius: 12px;
    min-height: 360px;
  }

  .rpg-zoom-btn,
  .rpg-zoom-reset {
    height: 34px;
    min-width: 34px;
  }

  .rpg-zoom-reset {
    min-width: 56px;
    padding: 0 10px;
    font-size: 0.68rem;
  }

  .rpg-zoom-value {
    min-width: 50px;
    font-size: 0.72rem;
  }

  /* Keep nodes tappable on mobile */
  .rpg-node {
    transform: translate(-50%, -50%);
  }

  .rpg-node:hover {
    transform: translate(-50%, -50%) scale(1.03);
  }

  /* Detail Panel - Slide up Bottom Sheet */
  #rpg-detail-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: auto;
    max-height: 80vh;
    background: white;
    z-index: 2000;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
    transform: translateY(110%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
  }

  #rpg-detail-panel.active {
    transform: translateY(0);
  }

  /* Close button for mobile panel */
  .rpg-close-detail {
    display: block !important;
    position: absolute;
    top: 12px;
    right: 12px;
    background: #f1f5f9;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    color: #64748b;
    cursor: pointer;
    z-index: 10;
  }
}

/* Hide close button on desktop */
.rpg-close-detail {
  display: none;
}

.rpg-detail-panel {
  background: white;
  padding: 24px;
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 100%;
  overflow-y: auto;
  border-left: 1px solid #cbd5e1;
}

.rpg-detail-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: #1e293b;
  margin-bottom: 2px;
}

.rpg-detail-sub {
  font-size: 0.75rem;
  font-weight: 600;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.rpg-req-group {
  background: #f8fafc;
  border-radius: 16px;
  padding: 12px;
  margin: 12px 0;
  border: 1px solid #e2e8f0;
}

.rpg-req-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #e2e8f0;
}

.rpg-req-item:last-child {
  border-bottom: none;
}

.rpg-req-item .label {
  color: #64748b;
  font-size: 13px;
}

.rpg-req-item .val {
  font-weight: 700;
  color: #ef4444;
}

.rpg-req-item.unlocked .val {
  color: #10b981;
}

.rpg-detail-desc {
  font-size: 13px;
  line-height: 1.5;
  color: #475569;
  margin-bottom: 16px;
}

.rpg-detail-stat {
  display: flex;
  justify-content: space-between;
  padding: 12px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  margin-bottom: 8px;
  font-size: 13px;
}

.calib-info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: #e2e8f0;
  color: #64748b;
  border-radius: 50%;
  font-size: 10px;
  margin-left: 6px;
  cursor: help;
  font-weight: 800;
}

.rpg-action-btn {
  width: 100%;
  padding: 14px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  margin-top: auto;
}

.rpg-action-btn.btn-active {
  background: #3b82f6;
  color: white;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Color Utilities preserved */
.bg-listening {
  background-color: #3b82f6;
}

.text-listening {
  color: #3b82f6;
}

.border-listening {
  border-color: #3b82f6;
}

.bg-writing {
  background-color: #8b5cf6;
}

.text-writing {
  color: #8b5cf6;
}

.border-writing {
  border-color: #8b5cf6;
}

.bg-reading {
  background-color: #10b981;
}

.text-reading {
  color: #10b981;
}

.border-reading {
  border-color: #10b981;
}

.bg-speaking {
  background-color: #f59e0b;
}

.text-speaking {
  color: #f59e0b;
}

.border-speaking {
  border-color: #f59e0b;
}

.rpg-icon-large {
  width: 220px;
  height: 220px;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.4));
}

.rpg-detail-icon-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
  padding: 10px;
  background: radial-gradient(circle, rgba(234, 179, 8, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  width: 250px;
  height: 250px;
  margin-left: auto;
  margin-right: auto;
}

#level-system-container .rpg-main-layout {
  height: 90vh;
  max-height: 1200px;
}

.rpg-rune.large {
  width: 100px;
  height: 100px;
  font-size: 2.5rem;
  line-height: 100px;
  border-width: 3px;
}

/* Override for larger skill icons */
.rpg-icon-large {
  width: 440px !important;
  height: 440px !important;
}

.rpg-detail-icon-wrapper {
  width: 480px !important;
  height: 480px !important;
}

/* Skill Detail Enhanced Styles */
.rpg-detail-modes {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.85rem;
}

.rpg-detail-modes .label {
  color: #64748b;
  margin-right: 6px;
}

.rpg-detail-modes .val {
  font-weight: 700;
  color: #3b82f6;
  letter-spacing: 0.05em;
}

.rpg-calib-box {
  margin-top: 16px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 10px;
}

.rpg-calib-header {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: #334155;
}

.rpg-calib-explain {
  font-size: 0.8rem;
  line-height: 1.4;
  color: #64748b;
  margin: 0;
}

/* Coming Soon Badge */
.rpg-coming-soon-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  padding: 2px 8px;
  border-radius: 6px;
  vertical-align: middle;
  margin-left: 6px;
}