/* ---------------------------------------------------------------------------
   Wrapped in `@layer legacy` by /var/www/_css/tools/wrap-legacy-layer.py.
   This sheet predates the Tailwind v4 build, which puts every rule in a layer.
   Unlayered CSS wins over layered CSS regardless of specificity, so left bare
   these rules defeated every Tailwind utility they shared a property with.
   Edit the rules inside the @layer block below as usual; for the layer order see
   the bundle's source in /var/www/_css/src/.
   --------------------------------------------------------------------------- */

@layer legacy {
/* assets/css/flashcards_view.css - Modern Flashcards View Page Styles */

/* ====================================================== */
/*  FLASHCARDS VIEW PAGE                                  */
/* ====================================================== */
.flashcards-view-page {
  padding: 0;
  min-height: 100vh;
  background: var(--bg-primary);
}

/* ====================================================== */
/*  HERO SECTION                                         */
/* ====================================================== */
.flashcards-hero {
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  border-bottom: 1px solid var(--border-primary);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.flashcards-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, var(--accent-primary-transparent) 0%, transparent 70%);
  opacity: 0.1;
  animation: pulse 10s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.1; }
  50% { transform: scale(1.1); opacity: 0.15; }
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-navigation {
  margin-bottom: 1.5rem;
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  padding: 0.5rem 0;
}

.back-button:hover {
  color: var(--accent-primary);
  transform: translateX(-4px);
}

.hero-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.hero-text {
  flex: 1;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  line-height: 1.2;
}

.hero-icon {
  font-size: 3rem;
  color: var(--accent-primary);
}

.hero-meta {
  display: flex;
  gap: 2rem;
  margin-top: 1rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.meta-item .material-symbols-outlined {
  font-size: 1.2rem;
  color: var(--accent-primary);
}

.hero-stats {
  display: flex;
  gap: 1.5rem;
}

.stat-card {
  text-align: center;
  padding: 1.5rem;
  background: rgba(var(--color-primary-rgb), 0.1);
  border-radius: 12px;
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  min-width: 100px;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-primary);
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  font-weight: 500;
}

/* ====================================================== */
/*  CONTENT SECTION                                      */
/* ====================================================== */
.flashcards-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 2rem 4rem 2rem;
}

.progress-section {
  margin-bottom: 3rem;
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border-primary);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--border-primary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-primary));
  transition: width 0.5s ease;
  border-radius: 4px;
}

.progress-text {
  text-align: center;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ====================================================== */
/*  CARDS CONTAINER                                      */
/* ====================================================== */
.cards-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.question-card {
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border-primary);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.question-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  border-color: var(--accent-primary);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-primary);
}

.question-number {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.question-number .material-symbols-outlined {
  color: var(--accent-primary);
  font-size: 1.3rem;
}

.card-status {
  display: flex;
  align-items: center;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.status-indicator.pending {
  color: var(--text-muted);
}

.status-indicator.correct {
  color: var(--color-success);
}

.status-indicator.incorrect {
  color: var(--color-danger);
}

.card-body {
  padding: 2rem;
}

.question-text {
  margin-bottom: 2rem;
}

.question-text p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0;
}

/* ====================================================== */
/*  OPTIONS CONTAINER                                    */
/* ====================================================== */
.options-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.option-card {
  display: block;
  background: var(--bg-primary);
  border: 2px solid var(--border-secondary);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.option-card:hover {
  border-color: var(--accent-primary);
  background: rgba(var(--color-primary-rgb), 0.02);
  transform: translateX(4px);
}

.option-card.selected {
  border-color: var(--accent-primary);
  background: rgba(var(--color-primary-rgb), 0.05);
}

.option-card.correct {
  border-color: var(--color-success);
  background: rgba(var(--color-success-rgb), 0.1);
}

.option-card.incorrect {
  border-color: var(--color-danger);
  background: rgba(var(--color-danger-rgb), 0.1);
}

.option-card input[type="radio"] {
  display: none;
}

.option-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.option-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
}

.option-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.option-card.selected .option-letter {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.option-card.correct .option-letter {
  background: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.option-card.incorrect .option-letter {
  background: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

.option-text {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
}

.option-indicator .material-symbols-outlined {
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.option-card.selected .option-indicator .material-symbols-outlined {
  color: var(--accent-primary);
}

.option-card.correct .option-indicator .material-symbols-outlined {
  color: var(--color-success);
}

.option-card.incorrect .option-indicator .material-symbols-outlined {
  color: var(--color-danger);
}

/* ====================================================== */
/*  EXPLANATION CONTAINER                                */
/* ====================================================== */
.explanation-container {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-secondary);
}

.explanation-content {
  background: rgba(var(--color-success-rgb), 0.05);
  border: 1px solid rgba(var(--color-success-rgb), 0.2);
  border-radius: 8px;
  padding: 1rem;
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-success);
  font-weight: 600;
}

.explanation-header .material-symbols-outlined {
  font-size: 1.1rem;
}

.explanation-text {
  color: var(--text-primary);
  line-height: 1.5;
}

.loading-explanation,
.explanation-error {
  padding: 0.75rem;
  text-align: center;
  font-style: italic;
  color: var(--text-muted);
}

/* ====================================================== */
/*  CARD FOOTER                                          */
/* ====================================================== */
.card-footer {
  padding: 1.5rem 2rem;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-primary);
}

.feedback-area {
  margin-bottom: 1rem;
  min-height: 2rem;
}

.feedback {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-weight: 500;
}

.feedback.success {
  background: rgba(var(--color-success-rgb), 0.1);
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
}

.feedback.error {
  background: rgba(var(--color-danger-rgb), 0.1);
  color: var(--color-danger);
  border: 1px solid rgba(var(--color-danger-rgb), 0.3);
}

.feedback.warning {
  background: rgba(var(--color-warning-rgb), 0.1);
  color: var(--color-warning);
  border: 1px solid rgba(var(--color-warning-rgb), 0.3);
}

.btn-check-answer {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--accent-primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1rem;
}

.btn-check-answer:hover:not(:disabled) {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.btn-check-answer:disabled {
  background: var(--bg-muted);
  color: var(--text-muted);
  cursor: not-allowed;
  transform: none;
}

/* ====================================================== */
/*  COMPLETION SUMMARY                                   */
/* ====================================================== */
.completion-summary {
  margin-top: 3rem;
  padding: 3rem 2rem;
}

.summary-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 16px;
  padding: 3rem;
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.summary-icon .material-symbols-outlined {
  font-size: 4rem;
  color: var(--color-success);
  margin-bottom: 1rem;
}

.summary-card h2 {
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.summary-card p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.final-stats {
  margin: 2rem 0;
}

.final-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.final-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.final-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.summary-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.btn-restart,
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-restart:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.btn-back {
  background: var(--bg-muted);
  color: var(--text-primary);
}

.btn-back:hover {
  background: var(--bg-primary);
  border-color: var(--border-primary);
  transform: translateY(-2px);
}

/* ====================================================== */
/*  EMPTY STATE                                          */
/* ====================================================== */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  max-width: 500px;
  margin: 2rem auto;
}

.empty-icon .material-symbols-outlined {
  font-size: 4rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.empty-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.empty-message {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-empty-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--accent-primary);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-empty-action:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

/* ====================================================== */
/*  RESPONSIVE DESIGN                                    */
/* ====================================================== */
@media (max-width: 768px) {
  .flashcards-hero {
    padding: 1.5rem;
  }
  
  .hero-main {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-stats {
    align-self: stretch;
    justify-content: space-between;
  }
  
  .stat-card {
    flex: 1;
    min-width: 0;
  }
  
  .flashcards-content {
    padding: 0 1rem 2rem 1rem;
  }
  
  .progress-section {
    padding: 1.5rem;
  }
  
  .card-body {
    padding: 1.5rem;
  }
  
  .card-footer {
    padding: 1.5rem;
  }
  
  .option-card {
    padding: 1rem;
  }
  
  .option-header {
    gap: 0.75rem;
  }
  
  .hero-meta {
    flex-direction: column;
    gap: 1rem;
  }
  
  .summary-actions {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .hero-icon {
    font-size: 2rem;
  }
  
  .stat-card {
    padding: 1rem;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
}
}