/* --- FLASHCARDS 3D DE RÉVISION EN FIN DE COURS --- */
.lesson-flashcards-section {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 2px dashed var(--school-border);
}

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

.flashcards-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--school-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.flashcard-deck {
  perspective: 1200px;
  width: 100%;
  max-width: 560px;
  margin: 0 auto 20px;
  height: 240px;
}

.flashcard-3d {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.flashcard-3d.flipped {
  transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: var(--school-radius-md, 16px);
  padding: 22px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  border: 2px solid var(--school-border);
  background-color: var(--school-card-bg, #ffffff);
  box-sizing: border-box;
}

.flashcard-front {
  transform: rotateY(0deg);
  background: var(--school-card-bg, #ffffff);
  color: var(--school-text);
}

.flashcard-back {
  transform: rotateY(180deg);
  background: var(--school-card-bg, #ffffff);
  border-color: var(--school-primary);
  color: var(--school-text);
  box-shadow: 0 10px 28px rgba(15, 118, 110, 0.12);
}

.flashcard-badge {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--school-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.flashcard-back .flashcard-badge {
  color: #16a34a;
}

.flashcard-body {
  font-size: 1.05rem;
  font-weight: 600;
  text-align: center;
  margin: auto 0;
  line-height: 1.5;
  color: var(--school-text);
  overflow-y: auto;
  max-height: 140px;
  padding: 4px 0;
}

.flashcard-body strong {
  color: var(--school-primary-dark);
}

.flashcard-hint {
  font-size: 12px;
  color: var(--school-text-muted);
  text-align: center;
  font-weight: 500;
}

.flashcard-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}


.level-chip {
  border: 1px solid var(--school-border);
  border-radius: var(--school-radius-pill);
  padding: 4px 12px;
  font-weight: 700;
  font-size: 0.85rem;
  background: var(--school-bg);
  cursor: pointer;
  color: var(--school-text);
}

.level-chip:hover { border-color: var(--school-primary); }

/* --- Badges --- */
.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.badge-card {
  border: 1px solid var(--school-border);
  border-radius: var(--school-radius-md);
  padding: 18px 12px;
  text-align: center;
  background: var(--school-surface);
}

.badge-card.badge-earned {
  background: var(--school-xp-soft);
  border-color: var(--school-xp);
}

.badge-card.badge-locked {
  opacity: 0.5;
  filter: grayscale(0.6);
}

.badge-icon {
  font-size: 2.2rem;
  line-height: 1;
  margin-bottom: 6px;
}

.badge-toast {
  background: var(--school-xp-soft);
  border: 1px solid var(--school-xp);
  border-radius: var(--school-radius-md);
  padding: 8px 14px;
  margin-top: 8px;
  font-weight: 600;
}

/* --- Admin --- */
.admin-table {
  width: 100%;
  font-size: 0.9rem;
}

.admin-table th, .admin-table td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--school-border);
  text-align: left;
  white-space: nowrap;
}

.admin-badge-success { color: var(--school-success); font-weight: 700; }
.admin-badge-danger { color: var(--school-danger); font-weight: 700; }

.admin-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.admin-tab-btn {
  border: 1px solid var(--school-border);
  background: var(--school-surface);
  border-radius: var(--school-radius-pill);
  padding: 6px 16px;
  font-weight: 600;
  cursor: pointer;
}

.admin-tab-btn.active {
  background: var(--school-primary);
  color: #fff;
  border-color: var(--school-primary);
}

/* --- Modules interactifs de mathématiques (math-widgets.js) --- */
.math-widget {
  background: var(--school-surface-alt, #f5f7fb);
  border: 1px solid var(--school-border);
  border-radius: var(--school-radius-md);
  padding: 16px 18px;
  margin: 14px 0;
}

.mw-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.mw-range {
  flex: 1;
  min-width: 140px;
  accent-color: var(--school-primary);
}

.mw-input {
  border: 1px solid var(--school-border);
  border-radius: var(--school-radius-sm, 6px);
  padding: 4px 8px;
  background: var(--school-surface);
  color: var(--school-text);
}

.mw-input.mw-narrow {
  width: 56px;
  text-align: center;
}

.mw-op-fixed {
  font-weight: 700;
  font-size: 1.1rem;
}

.mw-frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.mw-frac hr {
  width: 100%;
  margin: 0;
  border-top: 2px solid var(--school-text);
}

.mw-readout {
  font-size: 0.95rem;
  line-height: 1.6;
}

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

.mw-align {
  font-family: var(--school-font-mono, 'JetBrains Mono', monospace);
  margin-bottom: 4px;
}

.mw-expr {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.mw-table {
  border-collapse: collapse;
  margin-top: 8px;
}

.mw-table th, .mw-table td {
  border: 1px solid var(--school-border);
  padding: 4px 10px;
  text-align: center;
  font-size: 0.85rem;
}

.mw-value {
  font-weight: 700;
}

/* ==========================================================================
   JEU DU PENDU & SYNONYMES
   ========================================================================== */
.hangman-container {
  max-width: 920px;
  margin: 0 auto;
}

.hangman-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--school-border);
}

.hangman-lives-box {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--school-surface-alt, #f8fafc);
  padding: 6px 14px;
  border-radius: var(--school-radius-pill);
  border: 1px solid var(--school-border);
  font-weight: 700;
  font-size: 0.95rem;
}

.hangman-hearts {
  color: #ef4444;
  letter-spacing: 2px;
  font-size: 1.1rem;
}

.hangman-game-area {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: center;
  background: var(--school-surface);
  border: 2px solid var(--school-border);
  border-radius: var(--school-radius-lg);
  padding: 24px;
  box-shadow: var(--school-shadow-card);
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .hangman-game-area {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.hangman-drawing-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--school-surface-alt, #f8fafc);
  border-radius: var(--school-radius-md);
  padding: 12px;
  border: 1px solid var(--school-border);
}

.hangman-word-area {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hangman-word-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 10px 0;
}

.hangman-letter-slot {
  width: 44px;
  height: 52px;
  border-bottom: 4px solid var(--school-primary);
  background: var(--school-surface-alt, #f1f5f9);
  border-radius: 8px 8px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--school-text);
  text-transform: uppercase;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

.hangman-letter-slot.revealed {
  background: var(--school-primary-soft);
  color: var(--school-primary-dark);
  animation: hangman-pop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes hangman-pop {
  0% { transform: scale(0.6); opacity: 0; }
  70% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

/* Carte Bonus Synonymes */
.hangman-bonus-box {
  position: relative;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(217, 119, 6, 0.15) 100%);
  border: 2px dashed rgba(245, 158, 11, 0.5);
  border-radius: var(--school-radius-md);
  padding: 16px;
  transition: all 0.3s ease;
}

.hangman-bonus-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hangman-bonus-btn {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  border: none;
  border-radius: var(--school-radius-pill);
  padding: 8px 18px;
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: center;
}

.hangman-bonus-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(217, 119, 6, 0.35);
}

.hangman-bonus-content {
  background: var(--school-surface, #ffffff);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 10px;
  padding: 12px 16px;
  animation: hangman-bonus-reveal 0.4s ease;
}

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