#mode-rmcsa {
  --rmcsa-paper: #fffaf2;
  --rmcsa-ink: #2c2418;
  --rmcsa-muted: #6f5f4e;
  --rmcsa-border: rgba(110, 84, 54, 0.18);
  --rmcsa-accent: #b86d2d;
  --rmcsa-accent-soft: rgba(184, 109, 45, 0.14);
  --rmcsa-success: #1f7a4d;
  --rmcsa-success-bg: rgba(31, 122, 77, 0.06);
  --rmcsa-success-border: rgba(31, 122, 77, 0.5);
  --rmcsa-danger: #9b2f3a;
  --rmcsa-danger-bg: rgba(155, 47, 58, 0.06);
  --rmcsa-danger-border: rgba(155, 47, 58, 0.5);
  
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, rgba(184, 109, 45, 0.12), transparent 30%),
    radial-gradient(circle at left bottom, rgba(90, 130, 168, 0.1), transparent 28%),
    linear-gradient(180deg, #fff 0%, #fffdf8 100%);
  padding: 8px 2px 18px;
}

#mode-rmcsa::before {
  display: none;
}

.rmcsa-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.rmcsa-split-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  margin-bottom: 20px;
  align-items: stretch;
}

.rmcsa-passage-card,
.rmcsa-question-card,
.rmcsa-explanation-card {
  border: none;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
}

.rmcsa-result-box {
  border: 1px solid var(--rmcsa-border);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.88);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.rmcsa-card-header {
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(110, 84, 54, 0.08);
  padding-bottom: 12px;
}

.rmcsa-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rmcsa-accent);
  font-weight: 700;
}

.rmcsa-passage-text {
  font-family: 'Lora', serif;
  color: var(--rmcsa-ink);
  font-size: 1.08rem;
  line-height: 1.85;
  white-space: pre-wrap;
  overflow-y: auto;
  max-height: 500px;
  padding-right: 8px;
}

.rmcsa-passage-text::-webkit-scrollbar {
  width: 6px;
}
.rmcsa-passage-text::-webkit-scrollbar-track {
  background: transparent;
}
.rmcsa-passage-text::-webkit-scrollbar-thumb {
  background: rgba(184, 109, 45, 0.2);
  border-radius: 99px;
}

.rmcsa-question-prompt {
  font-family: 'Outfit', sans-serif;
  color: var(--rmcsa-ink);
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.5;
  margin: 0 0 16px 0;
}

.rmcsa-subtitle {
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--rmcsa-muted);
  font-weight: 700;
  margin-bottom: 12px;
}

.rmcsa-choices-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Choice card designs */
.rmcsa-choice-card {
  appearance: none;
  position: relative;
  display: flex;
  width: 100%;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 16px;
  border: 1px solid rgba(110, 84, 54, 0.14);
  background: #ffffff;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
}

.rmcsa-choice-card:not(:disabled):hover {
  transform: translateY(-2px);
  border-color: var(--rmcsa-accent);
  box-shadow: 0 6px 16px rgba(184, 109, 45, 0.08);
}

.rmcsa-choice-card:focus-visible {
  outline: 3px solid rgba(90, 130, 168, 0.32);
  outline-offset: 2px;
}

.rmcsa-choice-card:disabled {
  cursor: default;
}

.rmcsa-choice-radio {
  position: relative;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(110, 84, 54, 0.3);
  background: #fff;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  margin-top: 2px;
}

.rmcsa-choice-radio::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  opacity: 0;
  transition: all 0.15s ease;
}

.rmcsa-choice-text {
  font-family: 'Outfit', sans-serif;
  color: var(--rmcsa-ink);
  font-size: 0.98rem;
  line-height: 1.45;
}

/* Active Selected state */
.rmcsa-choice-card.is-selected {
  border-color: var(--rmcsa-accent);
  background: var(--rmcsa-accent-soft);
}

.rmcsa-choice-card.is-selected .rmcsa-choice-radio {
  background: var(--rmcsa-accent);
  border-color: var(--rmcsa-accent);
}

.rmcsa-choice-card.is-selected .rmcsa-choice-radio::after {
  opacity: 1;
}

/* Correctly selected choice: Solid green border and soft green bg */
.rmcsa-choice-card.is-correct-selected {
  border-color: var(--rmcsa-success);
  background: var(--rmcsa-success-bg);
  pointer-events: none;
}
.rmcsa-choice-card.is-correct-selected .rmcsa-choice-radio {
  background: var(--rmcsa-success);
  border-color: var(--rmcsa-success);
}
.rmcsa-choice-card.is-correct-selected .rmcsa-choice-radio::after {
  opacity: 1;
}

/* Incorrectly selected choice: Solid red border and soft red bg */
.rmcsa-choice-card.is-incorrect-selected {
  border-color: var(--rmcsa-danger);
  background: var(--rmcsa-danger-bg);
  pointer-events: none;
}
.rmcsa-choice-card.is-incorrect-selected .rmcsa-choice-radio {
  background: var(--rmcsa-danger);
  border-color: var(--rmcsa-danger);
}
.rmcsa-choice-card.is-incorrect-selected .rmcsa-choice-radio::after {
  opacity: 1;
}

/* Missed correct answer: Dashed green border and very soft green bg */
.rmcsa-choice-card.is-missed-correct {
  border: 2px dashed var(--rmcsa-success);
  background: rgba(31, 122, 77, 0.04);
  pointer-events: none;
}
.rmcsa-choice-card.is-missed-correct .rmcsa-choice-radio {
  border-color: var(--rmcsa-success);
  border-style: dashed;
}

/* Disabled state for unselected incorrect options after submit */
.rmcsa-choice-card.is-disabled {
  opacity: 0.65;
  pointer-events: none;
}

/* Actions footer */
.rmcsa-footer-actions {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 10px;
}

.rmcsa-buttons-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Result panel */
.rmcsa-result-box {
  padding: 16px 20px;
  border-radius: 18px;
}

.rmcsa-result-header {
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.rmcsa-result-header.is-correct {
  color: var(--rmcsa-success);
}

.rmcsa-result-header.is-incorrect {
  color: var(--rmcsa-danger);
}

.rmcsa-result-desc {
  font-size: 0.92rem;
  color: var(--rmcsa-muted);
}

/* Explanation Panel accordion styling */
.rmcsa-explanation-panel {
  margin-top: 6px;
}

.rmcsa-explanation-card {
  padding: 20px;
  background: linear-gradient(180deg, #fdfbfa, #f9f5f0);
  border: 1px solid rgba(184, 109, 45, 0.16);
}

.rmcsa-explanation-header {
  font-weight: 700;
  color: var(--rmcsa-accent);
  font-size: 0.96rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  border-bottom: 1px dashed rgba(184, 109, 45, 0.2);
  padding-bottom: 6px;
}

.rmcsa-explanation-content {
  font-size: 0.96rem;
  color: var(--rmcsa-ink);
  line-height: 1.6;
}

.rmcsa-explanation-content p {
  margin: 0 0 10px 0;
}

.rmcsa-explanation-content strong {
  color: var(--rmcsa-accent);
}

/* Responsive queries */
@media (max-width: 900px) {
  .rmcsa-split-layout {
    grid-template-columns: 1fr;
  }
  
  .rmcsa-passage-text {
    max-height: 300px;
  }
}

@media (max-width: 640px) {
  #mode-rmcsa {
    padding-inline: 0;
  }
  
  .rmcsa-passage-card,
  .rmcsa-question-card,
  .rmcsa-explanation-card {
    padding: 16px 0;
  }
  
  .rmcsa-result-box {
    border-radius: 20px;
    padding: 16px;
  }
}