/**
 * Styles de l'entraîneur GH-300 — Zéro dépendance
 * Thème sombre par défaut, accessibilité AA, responsive
 */

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --border-muted: #21262d;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-color: #238636;
  --accent-hover: #2ea043;
  --accent-blue: #1f6feb;
  --accent-blue-hover: #388bfd;
  --accent-red: #da3633;
  --accent-red-hover: #f85149;
  --accent-yellow: #d29922;
  --accent-purple: #8957e5;
  --card-radius: 8px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --focus-ring: 0 0 0 3px rgba(56, 139, 253, 0.4);
}

@media (prefers-color-scheme: light) {
  :root[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eaeef2;
    --border-color: #d0d7de;
    --border-muted: #afb8c1;
    --text-primary: #1f2328;
    --text-secondary: #57606a;
    --text-muted: #6e7781;
    --accent-color: #1a7f37;
    --accent-hover: #1f883d;
    --accent-blue: #0969da;
    --accent-blue-hover: #218bff;
    --accent-red: #cf222e;
    --accent-red-hover: #a40e26;
    --accent-yellow: #9a6700;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* En-tête globale */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-badge {
  background-color: var(--accent-blue);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.main-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: background-color 0.15s, color 0.15s;
}

.nav-link:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-link.active {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  box-shadow: inset 0 -2px 0 var(--accent-blue);
}

/* Contenu principal */
.app-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.view-header {
  margin-bottom: 2rem;
}

.view-header h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Cartes et panneaux */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Grille de métriques */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.metric-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.metric-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.metric-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-value.highlight {
  color: var(--accent-blue-hover);
}

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

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.6rem 1.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s, border-color 0.15s, transform 0.05s;
  user-select: none;
}

.btn:focus-visible, .nav-link:focus-visible, input:focus-visible, select:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

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

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

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

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

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--bg-tertiary);
}

.btn-outline.active {
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

.btn-danger {
  background-color: var(--accent-red);
  color: #ffffff;
}

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

.btn-success {
  background-color: var(--accent-color);
  color: #ffffff;
}

.btn-large {
  font-size: 1.1rem;
  padding: 0.85rem 1.75rem;
}

.btn-block {
  width: 100%;
}

.dashboard-actions {
  margin-bottom: 2rem;
}

.dashboard-details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* Barres de progression et statistiques */
.history-bars {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  height: 180px;
  padding-top: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
}

.bar-rect {
  width: 100%;
  max-width: 32px;
  border-radius: 4px 4px 0 0;
  background-color: var(--accent-blue);
  min-height: 4px;
  transition: height 0.3s ease;
}

.bar-rect.passed {
  background-color: var(--accent-color);
}

.bar-rect.failed {
  background-color: var(--accent-red);
}

.bar-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.domain-bars {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.domain-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.domain-row-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.domain-progress-track {
  width: 100%;
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.domain-progress-fill {
  height: 100%;
  background-color: var(--accent-blue);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.domain-progress-fill.success {
  background-color: var(--accent-color);
}

.domain-progress-fill.warning {
  background-color: var(--accent-yellow);
}

.domain-progress-fill.danger {
  background-color: var(--accent-red);
}

/* Vue Examen */
.exam-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
}

.exam-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.progress-counter {
  font-size: 1.1rem;
  font-weight: 600;
}

.exam-timer-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.timer-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.timer-display {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-blue-hover);
  background-color: var(--bg-tertiary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.timer-display.danger {
  color: var(--accent-red-hover);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.6; }
  100% { opacity: 1; }
}

.exam-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .exam-layout {
    grid-template-columns: 1fr;
  }
}

.question-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 12px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.badge.domain-badge {
  background-color: rgba(31, 111, 235, 0.15);
  border-color: rgba(31, 111, 235, 0.3);
  color: var(--accent-blue-hover);
}

.question-text {
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.options-container {
  border: none;
  margin-bottom: 2rem;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-tertiary);
  cursor: pointer;
  min-height: 48px;
  transition: border-color 0.15s, background-color 0.15s;
}

.option-item:hover {
  border-color: var(--accent-blue);
}

.option-item.selected {
  border-color: var(--accent-blue);
  background-color: rgba(31, 111, 235, 0.15);
}

.option-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.option-item.selected .option-key {
  background-color: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-blue);
}

.option-label {
  flex: 1;
  font-size: 1rem;
}

.exam-nav-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

/* Grille latérale */
.sidebar-header h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.legend {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot.answered { background-color: var(--accent-color); }
.dot.flagged { background-color: var(--accent-yellow); }
.dot.current { background-color: var(--accent-blue); }

.questions-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  max-height: 380px;
  overflow-y: auto;
  padding: 0.25rem;
  margin-bottom: 1.5rem;
}

.grid-cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  transition: transform 0.1s, border-color 0.15s;
}

.grid-cell:hover {
  border-color: var(--accent-blue);
  transform: scale(1.05);
}

.grid-cell.answered {
  background-color: rgba(35, 134, 54, 0.25);
  border-color: var(--accent-color);
  color: #3fb950;
}

.grid-cell.flagged {
  border-color: var(--accent-yellow);
  box-shadow: inset 0 0 0 2px var(--accent-yellow);
}

.grid-cell.current {
  border-color: var(--accent-blue-hover);
  background-color: rgba(31, 111, 235, 0.3);
  font-weight: 700;
}

/* Vue Rapport */
.verdict-banner {
  padding: 1.5rem;
  border-radius: 6px;
  text-align: center;
  margin-bottom: 1.5rem;
}

.verdict-banner.passed {
  background-color: rgba(35, 134, 54, 0.15);
  border: 1px solid var(--accent-color);
}

.verdict-banner.failed {
  background-color: rgba(218, 54, 51, 0.15);
  border: 1px solid var(--accent-red);
}

.verdict-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.verdict-score {
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.report-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-box {
  background-color: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.stat-val {
  font-size: 1.25rem;
  font-weight: 700;
}

.report-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.report-review-section {
  margin-top: 2rem;
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

.review-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 1.5rem;
}

.review-item.correct {
  border-left: 6px solid var(--accent-color);
}

.review-item.incorrect {
  border-left: 6px solid var(--accent-red);
}

.review-status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.review-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1rem 0;
}

.review-option {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
}

.review-option.user-selected {
  border-color: var(--accent-blue);
}

.review-option.is-correct-answer {
  background-color: rgba(35, 134, 54, 0.2);
  border-color: var(--accent-color);
  font-weight: 600;
}

.review-option.user-wrong {
  background-color: rgba(218, 54, 51, 0.2);
  border-color: var(--accent-red);
}

.review-explanation {
  background-color: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 6px;
  margin-top: 1rem;
  border-left: 3px solid var(--accent-blue);
}

.review-explanation h5 {
  color: var(--accent-blue-hover);
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

/* Onglets d'entraînement */
.sub-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.sub-tab {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.6rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 6px;
  min-height: 44px;
}

.sub-tab.active {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: flex-end;
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.filter-field label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.form-select {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.6rem 1rem;
  border-radius: 6px;
  min-height: 44px;
  font-size: 0.95rem;
}

.feedback-panel {
  background-color: var(--bg-tertiary);
  border-left: 4px solid var(--accent-blue);
  padding: 1.25rem;
  border-radius: 4px;
  margin: 1.5rem 0;
}

.practice-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* Flashcards */
.flashcard-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 650px;
  margin: 0 auto;
}

.flashcard {
  width: 100%;
  min-height: 320px;
  perspective: 1000px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  position: relative;
  transition: transform 0.2s;
  user-select: none;
}

.flashcard:hover {
  transform: translateY(-2px);
}

.flashcard-inner {
  width: 100%;
  height: 100%;
}

.flashcard-front, .flashcard-back {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem;
}

.flashcard.flipped .flashcard-front {
  display: none;
}

.flashcard:not(.flipped) .flashcard-back {
  display: none;
}

.flashcard-content {
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.6;
}

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

.flashcard-controls {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  width: 100%;
}

.flashcard-controls .btn {
  flex: 1;
}

.flashcard-counter {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal {
  max-width: 480px;
  width: 100%;
  margin: 0;
}

.modal h3 {
  margin-bottom: 1rem;
}

.modal p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

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

.empty-state {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9rem;
  padding: 1rem 0;
}