/**
 * Quiz Block - Style NotebookLM Dark Mode v2.0
 * Composant Quiz autonome pour LMS WordPress
 * 
 * @version 2.0.0
 * @date 2026-01-15
 * @author Frédéric Moitry
 * @reference Maquettes UI NotebookLM
 */

/* ==========================================================================
   CSS VARIABLES - Design Tokens
   ========================================================================== */

.quiz-container {
  --quiz-bg: #1e2024;
  --quiz-surface: #2a2d32;
  --quiz-surface-hover: #363a40;
  --quiz-surface-selected: #3d4148;
  --quiz-text-primary: #ffffff;
  --quiz-text-secondary: #9ca3af;
  --quiz-border: #3d4148;

  /* Feedback colors */
  --quiz-correct: #22c55e;
  --quiz-correct-bg: rgba(34, 197, 94, 0.08);
  --quiz-correct-border: #22c55e;
  --quiz-incorrect: #ef4444;
  --quiz-incorrect-bg: rgba(239, 68, 68, 0.08);
  --quiz-incorrect-border: #ef4444;

  /* Accent */
  --quiz-accent: #6366f1;
  --quiz-accent-hover: #5558e3;

  /* Hint */
  --quiz-hint-bg: #2a2d32;
  --quiz-hint-icon: #9ca3af;

  /* Spacing */
  --quiz-radius: 8px;
  --quiz-radius-lg: 12px;
  --quiz-padding: 32px;
  --quiz-gap: 12px;

  /* Typography */
  --quiz-font:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ==========================================================================
   CONTAINER
   ========================================================================== */

.quiz-container {
  font-family: var(--quiz-font);
  background: var(--quiz-bg) !important;
  border-radius: var(--quiz-radius-lg);
  padding: var(--quiz-padding);
  margin: 30px 0;
  color: var(--quiz-text-primary) !important;
  max-width: 680px;
}

.quiz-container * {
  box-sizing: border-box;
}

/* ==========================================================================
   HEADER
   ========================================================================== */

.quiz-header {
  margin-bottom: 20px;
}

.quiz-container .quiz-title {
  font-size: 28px;
  font-weight: 400;
  margin: 0 0 12px 0;
  color: var(--quiz-text-primary) !important;
  letter-spacing: -0.02em;
}

/* ==========================================================================
   PROGRESS
   ========================================================================== */

.quiz-progress-text {
  font-size: 14px;
  color: var(--quiz-text-secondary) !important;
  margin-bottom: 20px;
  display: block;
}

.quiz-progress-text.hidden {
  display: none !important;
}

.quiz-progress-bar {
  display: none !important; /* Masqué selon maquettes */
}

/* ==========================================================================
   QUESTION
   ========================================================================== */

.quiz-question {
  margin-bottom: 20px;
}

.quiz-question.hidden {
  display: none !important;
}

.quiz-container .quiz-question-text {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  margin: 0 0 24px 0;
  color: var(--quiz-text-primary) !important;
}

.quiz-question-source {
  display: none !important; /* Masqué selon maquettes */
}

/* ==========================================================================
   OPTIONS
   ========================================================================== */

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--quiz-gap);
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--quiz-surface) !important;
  border: 2px solid var(--quiz-border) !important;
  border-radius: var(--quiz-radius);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
  font-size: 15px;
  color: var(--quiz-text-primary) !important;
  width: 100%;
  font-family: inherit;
}

.quiz-option:hover:not(.disabled) {
  background: var(--quiz-surface-hover) !important;
  border-color: #5a5f66 !important;
}

.quiz-option:focus {
  outline: none;
  border-color: var(--quiz-accent) !important;
}

.quiz-option.selected:not(.correct):not(.incorrect) {
  background: var(--quiz-surface-selected) !important;
  border-color: #6b7280 !important;
}

.quiz-option.disabled {
  cursor: default;
}

/* Option CORRECT */
.quiz-option.correct {
  background: var(--quiz-correct-bg) !important;
  border-color: var(--quiz-correct-border) !important;
}

.quiz-option.correct .quiz-option-key {
  background: transparent;
  color: var(--quiz-correct) !important;
}

/* Option INCORRECT */
.quiz-option.incorrect {
  background: var(--quiz-incorrect-bg) !important;
  border-color: var(--quiz-incorrect-border) !important;
}

.quiz-option.incorrect .quiz-option-key {
  background: transparent;
  color: var(--quiz-incorrect) !important;
}

/* Disabled non-selected */
.quiz-option.disabled:not(.correct):not(.incorrect) {
  opacity: 0.7;
}

/* Option key */
.quiz-option-key {
  flex-shrink: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--quiz-text-secondary) !important;
  min-width: 20px;
}

.quiz-option-text {
  flex: 1;
  line-height: 1.5;
}

/* ==========================================================================
   HINT SYSTEM (Indice)
   ========================================================================== */

.quiz-hint-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: transparent !important;
  border: 1px solid var(--quiz-border) !important;
  border-radius: 6px;
  color: var(--quiz-text-secondary) !important;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 16px;
}

.quiz-hint-toggle:hover {
  background: var(--quiz-surface) !important;
  color: var(--quiz-text-primary) !important;
}

.quiz-hint-toggle .chevron {
  font-size: 10px;
  transition: transform 0.2s ease;
}

.quiz-hint-toggle.open .chevron {
  transform: rotate(180deg);
}

.quiz-hint-toggle.hidden {
  display: none !important;
}

/* Hint content box */
.quiz-hint-content {
  display: none !important;
  margin-top: 12px;
  padding: 16px 20px;
  background: var(--quiz-hint-bg) !important;
  border-radius: var(--quiz-radius);
  animation: hintSlideIn 0.2s ease;
}

.quiz-hint-content.visible {
  display: flex !important;
  align-items: flex-start;
  gap: 12px;
}

.quiz-hint-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--quiz-hint-icon) !important;
  font-size: 18px;
}

.quiz-hint-icon svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
}

.quiz-hint-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--quiz-text-secondary) !important;
  margin: 0;
}

@keyframes hintSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   FEEDBACK
   ========================================================================== */

.quiz-feedback {
  margin-top: 16px;
  padding: 16px 20px;
  border-radius: var(--quiz-radius);
  border-left: 4px solid;
  animation: feedbackSlideIn 0.25s ease;
}

.quiz-feedback.hidden {
  display: none !important;
}

@keyframes feedbackSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Correct feedback */
.quiz-feedback-correct {
  background: var(--quiz-correct-bg) !important;
  border-color: var(--quiz-correct) !important;
}

.quiz-feedback-correct .quiz-feedback-title {
  color: var(--quiz-correct) !important;
}

/* Incorrect feedback */
.quiz-feedback-incorrect {
  background: var(--quiz-incorrect-bg) !important;
  border-color: var(--quiz-incorrect) !important;
}

.quiz-feedback-incorrect .quiz-feedback-title {
  color: var(--quiz-incorrect) !important;
}

.quiz-feedback-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.quiz-feedback-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--quiz-text-secondary) !important;
  margin: 0;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.quiz-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 28px;
  padding-top: 0;
}

.quiz-nav.hidden {
  display: none !important;
}

.quiz-nav-left {
  flex: 1;
}

.quiz-nav-right {
  display: flex;
  gap: 12px;
}

.quiz-btn {
  padding: 10px 20px;
  border-radius: var(--quiz-radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
  border: none;
}

.quiz-btn:focus {
  outline: none;
}

.quiz-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Bouton Précédente (outline) */
.quiz-prev-btn {
  background: transparent !important;
  color: var(--quiz-text-primary) !important;
  border: 1px solid var(--quiz-border) !important;
}

.quiz-prev-btn:hover:not(:disabled) {
  background: var(--quiz-surface) !important;
  border-color: #6b7280 !important;
}

/* Bouton Suivante (filled accent) */
.quiz-next-btn {
  background: var(--quiz-accent) !important;
  color: white !important;
}

.quiz-next-btn:hover:not(:disabled) {
  background: var(--quiz-accent-hover) !important;
}

/* ==========================================================================
   RESULTS SCREEN
   ========================================================================== */

.quiz-results {
  padding: 20px 0;
}

.quiz-results.hidden {
  display: none !important;
}

/* Results header */
.quiz-results-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.quiz-results-header-icon {
  width: 32px;
  height: 32px;
  color: var(--quiz-text-secondary) !important;
}

.quiz-results-header-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
}

.quiz-results-header-title {
  font-size: 22px;
  font-weight: 500;
  margin: 0;
  color: var(--quiz-text-primary) !important;
}

/* Results grid */
.quiz-results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--quiz-border) !important;
  border-radius: var(--quiz-radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.quiz-result-card {
  background: var(--quiz-surface) !important;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.quiz-result-card .label {
  font-size: 13px;
  color: var(--quiz-text-secondary) !important;
}

.quiz-result-card .value {
  font-size: 32px;
  font-weight: 600;
  color: var(--quiz-text-primary) !important;
}

.quiz-result-card .value .small {
  font-size: 20px;
  font-weight: 400;
  color: var(--quiz-text-secondary) !important;
}

/* Details card */
.quiz-result-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
}

.quiz-result-details > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.quiz-result-details .label {
  font-size: 14px;
}

.quiz-result-details .value {
  font-size: 16px;
  font-weight: 500;
}

.quiz-result-details .value.correct-count {
  color: var(--quiz-text-primary) !important;
}

.quiz-result-details .value.incorrect-count {
  color: var(--quiz-text-primary) !important;
}

.quiz-result-details .value.skipped-count {
  color: var(--quiz-text-primary) !important;
}

/* Hide skipped row if 0 */
.quiz-result-details .skipped-row.hidden {
  display: none !important;
}

/* Results message */
.quiz-results-message {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--quiz-surface) !important;
  border-radius: var(--quiz-radius);
  margin-bottom: 24px;
}

.quiz-results-message-icon {
  width: 24px;
  height: 24px;
  color: var(--quiz-text-secondary) !important;
  flex-shrink: 0;
}

.quiz-results-message-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
}

.quiz-results-message-text {
  font-size: 15px;
  color: var(--quiz-text-primary) !important;
  margin: 0;
}

/* Results actions */
.quiz-results-actions {
  display: flex;
  gap: 12px;
}

.quiz-review-btn,
.quiz-restart-btn {
  flex: 1;
  background: var(--quiz-surface) !important;
  color: var(--quiz-text-primary) !important;
  border: 1px solid var(--quiz-border) !important;
  padding: 12px 20px;
}

.quiz-review-btn:hover,
.quiz-restart-btn:hover {
  background: var(--quiz-surface-hover) !important;
  border-color: #6b7280 !important;
}

/* ==========================================================================
   REVIEW MODE
   ========================================================================== */

.quiz-container.review-mode .quiz-question {
  display: block !important;
  margin-bottom: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--quiz-border);
}

.quiz-container.review-mode .quiz-question.quiz-question-last {
  border-bottom: none !important;
}

.quiz-container.review-mode .quiz-nav {
  display: none !important;
}

.quiz-container.review-mode .quiz-hint-toggle {
  display: none !important;
}

.quiz-review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--quiz-border);
}

.quiz-review-back-btn {
  background: var(--quiz-accent) !important;
  color: white !important;
}

.quiz-review-back-btn:hover {
  background: var(--quiz-accent-hover) !important;
}

.quiz-review-footer {
  display: flex;
  justify-content: center;
  margin-top: 40px;
  padding-top: 24px;
  border-top: none !important;
}

.quiz-review-footer .quiz-review-back-btn {
  min-width: 200px;
}

/* ==========================================================================
   LOADING
   ========================================================================== */

.quiz-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--quiz-text-secondary) !important;
}

.quiz-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--quiz-border) !important;
  border-top-color: var(--quiz-accent) !important;
  border-radius: 50%;
  animation: quizSpinner 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes quizSpinner {
  to {
    transform: rotate(360deg);
  }
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .quiz-container *,
  .quiz-container *::before,
  .quiz-container *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.quiz-option:focus-visible {
  outline: 2px solid var(--quiz-accent);
  outline-offset: 2px;
}

.quiz-btn:focus-visible {
  outline: 2px solid var(--quiz-accent);
  outline-offset: 2px;
}

.quiz-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 600px) {
  .quiz-container {
    padding: 24px 20px;
  }

  .quiz-title {
    font-size: 24px;
  }

  .quiz-results-grid {
    grid-template-columns: 1fr;
  }

  .quiz-result-card .value {
    font-size: 28px;
  }

  .quiz-results-actions {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .quiz-container {
    padding: 20px 16px;
    margin: 20px 0;
  }

  .quiz-title {
    font-size: 22px;
  }

  .quiz-option {
    padding: 14px 16px;
    font-size: 14px;
  }

  .quiz-nav-right {
    gap: 8px;
  }

  .quiz-btn {
    padding: 10px 16px;
    font-size: 13px;
  }
}