/* ═══════════════════════════════════════════════════
   EXERCICE.TN — Design System v2 "Playful Académique"
   Nunito (titres 700-900) + Space Grotesk (corps)
   Fonts chargées via header.php (async) — pas d'@import ici
   ═══════════════════════════════════════════════════ */

/* ── VARIABLES ── */
:root {
  --cream:    #FAFAF7;
  --violet:   #7C3AED;
  --violet-l: #A78BFA;
  --coral:    #FF6B6B;
  --coral-d:  #E85555;
  --lime:     #84CC16;
  --lime-d:   #65A30D;
  --electric: #0EA5E9;
  --yellow:   #FBBF24;
  --pink:     #EC4899;
  --dark:     #1E1B4B;
  --muted:    #6B7280;
  --light:    #F3F4F6;
  --border:   #E5E7EB;
  --white:    #FFFFFF;
  --shadow:   0 4px 24px rgba(124,58,237,.12);
  --shadow-lg:0 12px 48px rgba(124,58,237,.18);
  --r:  18px;  /* Point 1 : border-radius moderne */
  --rs: 12px;
  --rl: 24px;
  --rxl:32px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing:border-box; margin:0; padding:0; }
html { background: var(--cream); }

body.page-transition-enter, body.page-transition-exit {
  opacity: 0;
  transition: opacity 0.18s ease;
}

body {
  font-family:'Space Grotesk', sans-serif;
  background:var(--cream);
  color:var(--dark);
  line-height:1.6;
  min-height:100vh;
}
/* overflow-x sur html uniquement — sur body ça casse position:fixed sur mobile (Android/iOS) */
html { overflow-x:hidden; }
h1,h2,h3,h4,h5 { font-family:'Nunito',sans-serif; font-weight:900; line-height:1.15; }
a { text-decoration:none; color:inherit; }
img { max-width:100%; }

/* ── ACCESSIBILITE : FOCUS CLAVIER VISIBLE ── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid var(--violet);
  outline-offset: 3px;
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
}
:focus:not(:focus-visible) {
  outline: none;
}



/* ── LAYOUT ── */
.container { max-width:1160px; margin:0 auto; padding:0 28px; } /* Point 2 : padding latéral généreux */
.section { padding:80px 0; position:relative; z-index:1; } /* Point 2 : sections plus aérées */
.section-alt { background:white; }

/* ── BADGES ── */
.badge {
  display:inline-flex;align-items:center;gap:4px;
  padding:3px 10px;border-radius:999px;
  font-size:.72rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;
}
.badge-violet  { background:#EDE9FE; color:var(--violet); }
.badge-coral   { background:#FFE4E4; color:var(--coral-d); }
.badge-lime    { background:#ECFCCB; color:var(--lime-d); }
.badge-electric{ background:#E0F2FE; color:#0369A1; }
.badge-yellow  { background:#FEF3C7; color:#B45309; }
.badge-pink    { background:#FCE7F3; color:#9D174D; }

/* ── BUTTONS ── */
.btn {
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 22px;border-radius:14px;cursor:pointer;
  font-family:'Nunito',sans-serif;font-weight:800;font-size:.9rem;
  transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space:nowrap;
  text-decoration:none;
  position:relative;
  border:1.5px solid transparent;
  user-select: none;
}
.btn:hover  { transform:translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.btn:active { transform:translateY(0); scale: 0.98; } /* Effet de pression sans gonflement */

/* Primary — violet */
.btn-primary {
  background:linear-gradient(180deg,#8b5cf6 0%,#7c3aed 100%);
  color:white;
  border-color:#6d28d9;
  box-shadow:3px 5px 0 #5b21b6, 4px 7px 14px rgba(124,58,237,.35);
}
.btn-primary:hover {
  background:linear-gradient(180deg,#7c3aed 0%,#6d28d9 100%);
  box-shadow: 0 8px 20px rgba(124,58,237,.3);
}
.btn-primary:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 2px 5px rgba(124,58,237,.2);
}

/* Coral / rouge */
.btn-coral {
  background:linear-gradient(180deg,#ff8080 0%,#ff6b6b 100%);
  color:white;
  border-color:#e85555;
  box-shadow:3px 5px 0 #c94040, 4px 7px 14px rgba(255,107,107,.35);
}
.btn-coral:hover {
  background:linear-gradient(180deg,#ff6b6b 0%,#e85555 100%);
  box-shadow:1px 3px 0 #c94040, 2px 5px 10px rgba(255,107,107,.4);
}
.btn-coral:active { transform: translateY(2px); box-shadow:0 1px 0 #c94040, 1px 2px 6px rgba(255,107,107,.3); }

/* Lime / vert */
.btn-lime {
  background:linear-gradient(180deg,#95d926 0%,#84cc16 100%);
  color:white;
  border-color:#65a30d;
  box-shadow:3px 5px 0 #4d7c0f, 4px 7px 14px rgba(132,204,22,.35);
}
.btn-lime:hover {
  background:linear-gradient(180deg,#84cc16 0%,#65a30d 100%);
  box-shadow:1px 3px 0 #4d7c0f, 2px 5px 10px rgba(132,204,22,.4);
}
.btn-lime:active { transform: translateY(2px); box-shadow:0 1px 0 #4d7c0f, 1px 2px 6px rgba(132,204,22,.3); }

/* Electric / bleu */
.btn-electric {
  background:linear-gradient(180deg,#38bdf8 0%,#0ea5e9 100%);
  color:white;
  border-color:#0284c7;
  box-shadow:3px 5px 0 #0369a1, 4px 7px 14px rgba(14,165,233,.35);
}
.btn-electric:hover {
  background:linear-gradient(180deg,#0ea5e9 0%,#0284c7 100%);
  box-shadow:1px 3px 0 #0369a1, 2px 5px 10px rgba(14,165,233,.4);
}
.btn-electric:active { transform: translateY(2px); box-shadow:0 1px 0 #0369a1, 1px 2px 6px rgba(14,165,233,.3); }

/* Ghost */
.btn-ghost {
  background:linear-gradient(180deg,#ffffff 0%,#f9fafb 100%);
  color:var(--dark);
  border:1.5px solid #d1d5db;
  box-shadow:3px 5px 0 #9ca3af, 4px 7px 12px rgba(107,114,128,.18);
}
.btn-ghost:hover {
  border-color:var(--violet);color:var(--violet);
  background:linear-gradient(180deg,#f5f3ff 0%,#ede9fe 100%);
  box-shadow:1px 3px 0 #9ca3af, 2px 5px 8px rgba(124,58,237,.2);
}
.btn-ghost:active { transform: translateY(2px); box-shadow:0 1px 0 #9ca3af, 1px 2px 4px rgba(107,114,128,.15); }

/* Secondary / Neutral — pour Annuler / Secondaire */
.btn-secondary {
  background: #FFFFFF;
  color: #4B5563;
  border: 1.5px solid #E5E7EB;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.btn-secondary:hover {
  background: #F9FAFB;
  border-color: #D1D5DB;
  color: #1F2937;
  box-shadow: 0 4px 8px rgba(0,0,0,0.08);
}
.btn-secondary:active { 
  transform: scale(0.97);
  background: #F3F4F6;
  box-shadow: none;
}

/* MODERN TABS — Point 7 */
.modern-tabs {
  display: flex;
  gap: 6px;
  background: #F3F4F6;
  padding: 5px;
  border-radius: 14px;
  margin-bottom: 24px;
  width: fit-content;
}
.modern-tab {
  padding: 8px 18px;
  border-radius: 10px;
  font-weight: 800;
  font-size: .88rem;
  color: #6B7280;
  text-decoration: none;
  transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid transparent;
}
.modern-tab:hover {
  color: #374151;
  background: rgba(255,255,255,0.5);
}
.modern-tab.active {
  background: white;
  color: #7C3AED;
  box-shadow: 0 4px 12px rgba(124,58,237,0.12);
  border-color: #E5E7EB;
}

/* TABS & FILTERS — Premium Styling */
.tabs-row, .filters-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.tab-btn, .filter-btn {
  background: white;
  border: 2px solid #E5E7EB;
  color: #4B5563;
  padding: 10px 24px;
  border-radius: 50px;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  user-select: none;
}

.tab-btn:hover, .filter-btn:hover {
  border-color: var(--violet-l);
  color: var(--violet);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(124,58,237,0.1);
}

.tab-btn.active, .filter-btn.active {
  background: linear-gradient(135deg, var(--violet), #5B21B6);
  border-color: transparent;
  color: white;
  box-shadow: 0 8px 16px rgba(124,58,237,0.25);
}

.tab-btn.active .nav-icon, .filter-btn.active .nav-icon {
  color: white;
}

.tab-count {
  background: #E5E7EB;
  color: #4B5563;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 900;
}
.modern-tab.active .tab-count {
  background: #F5F3FF;
  color: #7C3AED;
}

.btn-sm  { padding:7px 16px;font-size:.8rem; }
.btn-lg  { padding:10px 30px;font-size:1rem; }

/* ── ACTIONS ROW — compact pill bar ── */
.actions-row {
  display:inline-flex;align-items:center;gap:6px;
  flex-wrap:wrap;
  padding:6px 8px;
  background:white;
  border:1.5px solid var(--border);
  border-radius:999px;
  box-shadow:0 2px 10px rgba(0,0,0,.06);
}
.actions-row .btn-sm {
  padding:6px 14px;
  font-size:.78rem;
  gap:5px;
  border-radius:999px;
}
.actions-row .btn-ghost {
  border-width:1.5px;
}
.actions-row .divider {
  width:1px;height:22px;
  background:var(--border);
  flex-shrink:0;
  margin:0 2px;
}
@media (max-width:640px) {
  .actions-row {
    border-radius:var(--r);
    padding:8px;
    gap:6px;
  }
  .actions-row .btn-label { display:none; }
  .actions-row .btn-sm { padding:8px 10px; font-size:.85rem; }
  .actions-row .divider { display:none; }
}

/* ── PREMIUM FILTERS ── */
.premium-filter-wrap {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  padding: 16px 20px;
  margin-bottom: 32px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.filters-form {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 160px;
}

.filter-label {
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding-left: 4px;
}

.filter-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.filter-icon {
  position: absolute;
  left: 14px;
  color: var(--violet);
  width: 18px !important;
  height: 18px !important;
  pointer-events: none;
  z-index: 2;
}

.filter-select, .filter-input {
  width: 100%;
  padding: 11px 14px 11px 40px;
  background: var(--light);
  border: 1.5px solid transparent;
  border-radius: 12px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  transition: all 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.filter-input-wrap::after {
  content: '▼';
  position: absolute;
  right: 14px;
  font-size: 0.5rem;
  color: var(--muted);
  pointer-events: none;
  opacity: 0.5;
}

.filter-select:hover, .filter-input:hover {
  background: #E5E7EB;
}

.filter-select:focus, .filter-input:focus {
  background: white;
  border-color: var(--violet);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
  outline: none;
}

.filter-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn-filter-submit {
  background: var(--violet);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 11px 20px;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
}

.btn-filter-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.3);
}

.btn-filter-reset {
  background: #F3F4F6;
  color: var(--muted);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  border: 1.5px solid transparent;
}

.btn-filter-reset:hover {
  background: #E5E7EB;
  color: var(--dark);
  border-color: var(--border);
}

@media (max-width: 768px) {
  .filters-form {
    gap: 12px;
  }
  .filter-item {
    min-width: 45%;
  }
}

@media (max-width: 480px) {
  .filter-item {
    min-width: 100%;
  }
  .btn-filter-submit {
    flex: 1;
    justify-content: center;
  }
}

/* ── CARDS ── */
.card {
  background:white;border-radius:var(--r);padding:28px; /* Point 2 : padding généreux */
  box-shadow:0 2px 10px rgba(0,0,0,.05);border:1.5px solid var(--border);
  transition:all .25s ease;
}
.card:hover { box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent; }

/* ── SECTION HEADER ── */
.section-header { text-align:center;margin-bottom:44px; }
.section-tag {
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(135deg,#EDE9FE,#FEE2E2);
  color:var(--violet);border-radius:999px;padding:5px 14px;
  font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;
  margin-bottom:12px;
}
.section-title { font-size:clamp(1.5rem,3vw,2.4rem);color:var(--dark);margin-bottom:10px; }
.section-desc  { color:var(--muted);font-size:1rem;max-width:540px;margin:0 auto; }

/* ── FEATURE CARDS ── */
.feature-card {
  background:white;border-radius:var(--rl);padding:26px;
  border:2px solid var(--border);position:relative;overflow:hidden;
  transition:all .25s cubic-bezier(.34,1.56,.64,1);
}
.feature-card:hover { transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent; }
.feature-card::before {
  content:'';position:absolute;top:0;right:0;
  width:100px;height:100px;border-radius:0 0 0 100%;opacity:.07;
}
.fc-violet::before { background:var(--violet); }
.fc-coral::before  { background:var(--coral); }
.fc-lime::before   { background:var(--lime); }
.fc-electric::before { background:var(--electric); }
.fc-yellow::before { background:var(--yellow); }
.fc-pink::before   { background:var(--pink); }
.feature-icon  { width:52px;height:52px;border-radius:var(--rs);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px; }
.feature-title { font-family:'Nunito',sans-serif;font-weight:900;font-size:1.05rem;margin-bottom:7px; }
.feature-desc  { color:var(--muted);font-size:.87rem;line-height:1.6; }

/* ── MATIERE CARD ── */
.matiere-card {
  background:white;border-radius:var(--r);padding:18px;
  border:2px solid var(--border);text-align:center;cursor:pointer;
  transition:all .25s cubic-bezier(.34,1.56,.64,1);display:block;
}
.matiere-card:hover { transform:translateY(-5px) scale(1.02);box-shadow:var(--shadow);border-color:transparent; }
.matiere-icon { font-size:2.2rem;margin-bottom:8px;display:block;transition:transform .3s cubic-bezier(.34,1.56,.64,1); }
.matiere-card:hover .matiere-icon { transform:scale(1.2) rotate(-10deg); }
.matiere-name  { font-family:'Nunito',sans-serif;font-weight:900;font-size:.9rem;margin-bottom:3px; }
.matiere-count { font-size:.75rem;color:var(--muted);font-weight:600; }
.matiere-bar   { height:4px;border-radius:999px;margin-top:10px;opacity:.65; }

/* ── DEVOIR CARD ── */
.devoir-card { background:white;border-radius:var(--r);border:2px solid var(--border);overflow:hidden;transition:all .25s;display:flex;flex-direction:column;height:100%; }
.devoir-card:hover { box-shadow:var(--shadow);transform:translateY(-4px);border-color:transparent; }
.devoir-card-top { height:90px;display:flex;align-items:center;justify-content:center;font-size:2.2rem; }
.devoir-card-top img + span { display:none; }
.devoir-card-body { padding:16px;flex:1;display:flex;flex-direction:column; }
.devoir-title { font-family:'Nunito',sans-serif;font-weight:900;font-size:.92rem;margin-bottom:8px;color:var(--dark); }
.devoir-footer { padding:10px 16px;border-top:1.5px solid var(--border);display:flex;justify-content:space-between;align-items:center;margin-top:auto; }
.fav-btn { background:none;border:none;cursor:pointer;padding:5px;border-radius:7px;transition:all .2s;color:var(--muted);font-size:1rem; }
.fav-btn:hover { color:var(--coral);background:#FFE4E4; }
.fav-btn.is-favorite,
.fav-btn.active {
  color:var(--coral);
  background:#FFE4E4;
}

/* ── QUIZ ── */
.quiz-container { background:white;border-radius:var(--rxl);padding:36px;box-shadow:var(--shadow-lg);border:2px solid var(--border);max-width:660px;margin:0 auto; }
.quiz-progress-bar { height:7px;background:var(--light);border-radius:999px;margin-bottom:28px;overflow:hidden; }
.quiz-progress-fill { height:100%;background:linear-gradient(90deg,var(--violet),var(--coral));border-radius:999px;transition:width .4s cubic-bezier(.34,1.56,.64,1); }
.quiz-question { font-family:'Nunito',sans-serif;font-weight:900;font-size:1.2rem;color:var(--dark);margin-bottom:24px; }
.quiz-options { display:flex;flex-direction:column;gap:10px;margin-bottom:24px; }
.quiz-option { padding:14px 18px;border-radius:var(--r);border:2px solid var(--border);cursor:pointer;font-weight:600;font-size:.9rem;transition:all .2s;display:flex;align-items:center;gap:12px;background:white; }
.quiz-option:hover:not(.disabled) { border-color:var(--violet);background:#F5F3FF; }
.quiz-option .opt-letter { width:30px;height:30px;border-radius:50%;background:var(--light);display:flex;align-items:center;justify-content:center;font-family:'Nunito',sans-serif;font-weight:900;font-size:.85rem;flex-shrink:0;transition:all .2s; }
.quiz-option.selected { border-color:var(--violet);background:#F5F3FF; }
.quiz-option.selected .opt-letter { background:var(--violet);color:white; }
.quiz-option.correct { border-color:var(--lime);background:#F0FDF4; }
.quiz-option.correct .opt-letter { background:var(--lime);color:white; }
.quiz-option.wrong { border-color:var(--coral);background:#FFF5F5; }
.quiz-option.wrong .opt-letter { background:var(--coral);color:white; }

/* ── UNIFIED FILTER SYSTEM (Premium & Gen-Z) ── */
.premium-filter-wrap {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  box-shadow: 0 10px 40px rgba(124,58,237,0.06);
  margin-bottom: 36px;
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  transition: all .3s ease;
  position: relative;
  z-index: 10;
}

.filter-item {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.filter-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  padding-left: 4px;
}

.filter-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.filter-icon {
  position: absolute;
  left: 14px;
  color: var(--violet);
  pointer-events: none;
  width: 18px;
  height: 18px;
}

.filter-select, .filter-input {
  width: 100%;
  height: 46px;
  padding: 0 16px 0 42px;
  background: #F8FAFC;
  border: 1.5px solid #E2E8F0;
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
  appearance: none;
}

.filter-select:focus, .filter-input:focus {
  background: white;
  border-color: var(--violet);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

/* Custom arrow for select */
.filter-item:not(.no-arrow) .filter-input-wrap::after {
  content: '';
  position: absolute;
  right: 14px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg) translateY(-50%);
  pointer-events: none;
  margin-top: -4px;
}

.filter-actions {
  display: flex;
  gap: 10px;
}

.btn-filter-submit {
  background: var(--violet);
  color: white;
  height: 46px;
  padding: 0 24px;
  border-radius: 12px;
  font-weight: 800;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-filter-submit:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(124,58,237,0.3); }

.btn-filter-reset {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #F1F5F9;
  color: var(--muted);
  border-radius: 12px;
  transition: all 0.2s;
}
.btn-filter-reset:hover { background: #E2E8F0; color: var(--dark); }

@media (max-width: 768px) {
  .premium-filter-wrap { padding: 20px; flex-direction: column; align-items: stretch; }
  .filter-item { width: 100%; flex: none; }
  .filter-actions { margin-top: 10px; }
  .btn-filter-submit { flex: 1; justify-content: center; }
}
.btn-filter-submit:hover {
  background: #6D28D9;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(124,58,237,.35);
}

.btn-filter-reset {
  background: #F1F3F7;
  color: var(--muted);
  height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}
html[data-theme="dark"] .btn-filter-reset { background: #374151; color: #9CA3AF; }
.btn-filter-reset:hover { background: #E2E8F0; color: var(--dark); }


/* ── FORMS ── */
.form-group { margin-bottom:16px; }
.form-label { display:block;font-weight:700;font-size:.84rem;margin-bottom:8px;color:var(--dark); } /* Point 2 */
.form-input { width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:var(--r);font-family:inherit;font-size:.9rem;color:var(--dark);outline:none;transition:all .2s;background:white; } /* Point 1 */
.form-input:focus { border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.1); }
.form-select { width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:var(--r);font-family:inherit;font-size:.9rem;color:var(--dark);outline:none;background:white;cursor:pointer;transition:all .2s; } /* Point 1 */
.form-select:focus { border-color:var(--violet); }
textarea.form-input { resize:vertical;min-height:90px; } /* Point 2 */

/* ── MODAL ── */
.modal-overlay { position:fixed;inset:0;background:rgba(30,27,75,.55);backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .2s ease; }
.modal { background:white;border-radius:var(--rxl);overflow:hidden;max-width:680px;width:100%;max-height:90vh;overflow-y:auto;animation:slideUp .3s cubic-bezier(.34,1.56,.64,1);box-shadow:0 32px 80px rgba(30,27,75,.3); }
@keyframes fadeIn  { from{opacity:0} to{opacity:1} }
@keyframes slideUp { from{transform:translateY(30px);opacity:0} to{transform:translateY(0);opacity:1} }
.modal-header { padding:22px 26px;border-bottom:1.5px solid var(--border);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:white;z-index:1; }
.modal-close  { width:34px;height:34px;border-radius:9px;border:2px solid var(--border);background:white;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;justify-content:center;transition:all .2s; }
.modal-close:hover { background:var(--coral);color:white;border-color:var(--coral); }
.modal-body   { padding:26px; }

/* ── TOASTS ── */
.toast-container { position:fixed;bottom:22px;right:22px;z-index:2000;display:flex;flex-direction:column;gap:8px;pointer-events:none; }
.toast { display:flex;align-items:center;gap:10px;background:var(--dark);color:white;padding:12px 16px;border-radius:var(--r);min-width:260px;max-width:360px;box-shadow:0 8px 30px rgba(30,27,75,.25);animation:toastIn .3s cubic-bezier(.34,1.56,.64,1);border-left:4px solid var(--violet);pointer-events:all; }
.toast.success { border-left-color:var(--lime); }
.toast.error   { border-left-color:var(--coral); }
.toast.info    { border-left-color:var(--electric); }
@keyframes toastIn { from{transform:translateX(110%);opacity:0} to{transform:translateX(0);opacity:1} }

/* ── ADMIN LAYOUT ── */
.admin-layout  { display:flex;min-height:100vh; }
.admin-sidebar {
  width:240px;background:var(--dark);color:white;
  flex-shrink:0;display:flex;flex-direction:column;
  padding:20px 14px;position:sticky;top:0;height:100vh;overflow-y:auto;
}
.sidebar-logo  { font-family:'Nunito',sans-serif;font-weight:900;font-size:1.15rem;color:white;margin-bottom:28px;padding:0 6px; }
.sidebar-logo span { color:var(--coral); }
.sidebar-sec   { font-size:.65rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em;color:rgba(255,255,255,.3);padding:0 8px;margin:20px 0 6px; }
.sidebar-link  { display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:var(--rs);font-size:.84rem;font-weight:600;color:rgba(255,255,255,.6);transition:all .15s;text-decoration:none; }
.sidebar-link:hover,.sidebar-link.active { background:rgba(255,255,255,.1);color:white; }
.sidebar-link .icon { width:30px;height:30px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:.95rem;background:rgba(255,255,255,.07);flex-shrink:0; }
.sidebar-link.active .icon { background:var(--violet); }
.sidebar-footer{ margin-top:auto;padding-top:14px;border-top:1px solid rgba(255,255,255,.1); }
.admin-main    { flex:1;background:#F8F7FF;min-width:0; }
.admin-topbar  { background:white;border-bottom:1.5px solid var(--border);padding:0 28px;height:56px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50; }
.admin-content { padding:28px; }
.stat-card { background:white;border-radius:var(--r);padding:18px 22px;border:1.5px solid var(--border);transition:all .2s; }
.stat-card:hover { box-shadow:var(--shadow);transform:translateY(-2px); }
.stat-num { font-family:'Nunito',sans-serif;font-size:2rem;font-weight:900; }
.stat-label { font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-top:2px; }

/* ── HERO ELEMENTS ── */
.hero-label { display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#EDE9FE,#FEE2E2);color:var(--violet);border-radius:999px;padding:5px 14px;font-size:.78rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;margin-bottom:18px; }
.hero-title { font-size:clamp(2rem,4.5vw,3.6rem);background:linear-gradient(135deg,var(--dark) 0%,var(--violet) 60%,var(--coral) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:16px; }
.hero-stat .num { font-family:'Nunito',sans-serif;font-size:1.7rem;font-weight:900;background:linear-gradient(135deg,var(--violet),var(--coral));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent; }

/* ── PROGRESS ── */
.progress-track { height:9px;background:var(--light);border-radius:999px;overflow:hidden; }
.progress-fill  { height:100%;border-radius:999px;transition:width 1s cubic-bezier(.34,1.56,.64,1); }

/* ── FLOAT ANIMATION ── */
/* will-change:transform isole ces éléments sur leur propre layer GPU */
.float-shape {
  position:absolute;border-radius:50%;
  animation:floatBounce 4s ease-in-out infinite;
  display:flex;align-items:center;justify-content:center;
  font-family:'Nunito',sans-serif;font-weight:900;
  will-change:transform;
}
@keyframes floatBounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* ── REVEAL ── */
.reveal { opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s cubic-bezier(.34,1.56,.64,1); }
.reveal.visible { opacity:1;transform:translateY(0); }
.reveal-d1 { transition-delay:.1s; }
.reveal-d2 { transition-delay:.2s; }
.reveal-d3 { transition-delay:.3s; }

/* ── FOOTER ── */
.site-footer { background:var(--dark);color:white;padding:56px 0 28px; }
.site-footer .logo { font-family:'Nunito',sans-serif;font-weight:900;font-size:1.35rem;color:white; }
.site-footer .logo span { color:var(--coral); }
.footer-col h3 { font-family:'Nunito',sans-serif;font-weight:900;font-size:.82rem;margin-bottom:14px;color:rgba(255,255,255,.85);text-transform:uppercase;letter-spacing:.06em; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a { color:rgba(255,255,255,.45);font-size:.84rem;transition:color .2s; }
.footer-col ul li a:hover { color:white; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.08);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-top:40px; }

/* ── GRIDS ── */
.grid-2 { display:grid;grid-template-columns:repeat(2,1fr);gap:20px; }
.grid-3 { display:grid;grid-template-columns:repeat(3,1fr);gap:20px; }
.grid-4 { display:grid;grid-template-columns:repeat(4,1fr);gap:16px; }

/* ── RESPONSIVE ── */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .admin-sidebar{width:210px;}
}
@media(max-width:768px){
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .grid-2{grid-template-columns:1fr;}
  .admin-sidebar{width:190px;}
  /* #14 — Footer 4 colonnes → 2 colonnes entre 641px et 768px */
  .site-footer .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:640px){
  .grid-3,.grid-4{grid-template-columns:1fr;}
  .admin-layout{flex-direction:column;}
  .admin-sidebar{width:100%;height:auto;position:relative;}
  /* #14 — Footer 4 colonnes → 1 colonne sous 640px (déjà géré par .grid-4 ci-dessus) */
  .site-footer .grid-4{grid-template-columns:1fr;}
}

/* Modern dark mode */
html[data-theme="dark"] {
  --dark:#F8FAFC;
  --muted:#CBD5E1;
  --light:#111827;
  --border:#334155;
  background:#0B1020;
  color:#E5E7EB;
}
html[data-theme="dark"] body { background:#0B1020;color:#E5E7EB; }
html[data-theme="dark"] .navbar,
html[data-theme="dark"] .card,
html[data-theme="dark"] .devoir-card,
html[data-theme="dark"] .feature-card,
html[data-theme="dark"] .matiere-card,
html[data-theme="dark"] .form-input,
html[data-theme="dark"] .form-select,
html[data-theme="dark"] .nav-search,
html[data-theme="dark"] .nav-dropdown,
html[data-theme="dark"] .quiz-container {
  background:#111827 !important;
  color:#E5E7EB;
  border-color:#334155 !important;
}
html[data-theme="dark"] .navbar { background:rgba(15,10,40,.97) !important; border-bottom-color:#2D1B69 !important; box-shadow:0 2px 20px rgba(0,0,0,.4) !important; }
html[data-theme="dark"] .nav-link,
html[data-theme="dark"] .nav-more-btn,
html[data-theme="dark"] .nav-search input { color:#CBD5E1 !important; }
html[data-theme="dark"] .nav-more-btn:hover,
html[data-theme="dark"] .nav-more-btn.active { background:#1E1B4B !important; color:#A78BFA !important; border-color:#4C1D95 !important; }
html[data-theme="dark"] .nav-search { background:#1E1B4B !important; border-color:#4C1D95 !important; }
html[data-theme="dark"] .nav-btn-ghost { border-color:#4C1D95 !important; color:#CBD5E1 !important; }
html[data-theme="dark"] .nav-btn-ghost:hover { background:#1E1B4B !important; color:#A78BFA !important; }
html[data-theme="dark"] .theme-toggle { background:#1F2937;color:#FBBF24;border-color:#334155; }
html[data-theme="dark"] .notif-btn:hover { background:#1E1B4B !important; }
html[data-theme="dark"] .section-alt,
html[data-theme="dark"] [style*="background:#F8F7FF"],
html[data-theme="dark"] [style*="background:white"] { background:#111827 !important; }
html[data-theme="dark"] table tr,
html[data-theme="dark"] table thead { background:#111827 !important; }
html[data-theme="dark"] .site-footer { background:#050816; }
html[data-theme="dark"] .theme-toggle { background:#1F2937;color:#FBBF24;border-color:#334155; }

/* Shared modern layouts */
.modern-page-head { display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:24px; }
.modern-page-head h1 { font-family:'Nunito',sans-serif;font-weight:900;font-size:clamp(1.6rem,3vw,2.4rem);margin:0 0 6px; }
.modern-page-head p { color:var(--muted);margin:0;font-size:.95rem; }
.modern-tabs { display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px; }
.modern-tabs a { padding:9px 16px;border:1.5px solid var(--border);border-radius:999px;background:white;color:var(--muted);font-weight:800;font-size:.84rem;text-decoration:none; }
.modern-tabs a.active { background:var(--violet);color:white;border-color:var(--violet); }
.modern-panel { background:white;border:1.5px solid var(--border);border-radius:var(--r);padding:22px; }
.modern-panel-head { display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:22px;border-bottom:1.5px solid var(--border);padding-bottom:18px; }
.modern-panel-head h2 { font-family:'Nunito',sans-serif;font-weight:900;margin:0 0 6px; }
.modern-panel-head p { color:var(--muted);margin:0;font-size:.86rem; }
.settings-grid { display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px; }
.setting-field { background:#F8F7FF;border:1.5px solid var(--border);border-radius:var(--rs);padding:16px; }
.switch-line { display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;background:white;border:1.5px solid var(--border);font-weight:700;color:var(--muted); }

/* ══ SKELETON SCREENS (point 30) ══════════════════════════════════════════ */
@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.skeleton {
  background: #E5E7EB;
  border-radius: 8px;
  animation: skeleton-pulse 1.4s ease-in-out infinite;
}
.skeleton-card {
  background: white;
  border-radius: var(--r);
  border: 1.5px solid var(--border);
  overflow: hidden;
}
.skeleton-card .sk-img  { height: 96px; background: #E5E7EB; animation: skeleton-pulse 1.4s ease-in-out infinite; }
.skeleton-card .sk-body { padding: 14px; }
.skeleton-card .sk-line { height: 12px; border-radius: 6px; margin-bottom: 8px; background: #E5E7EB; animation: skeleton-pulse 1.4s ease-in-out infinite; }
.skeleton-card .sk-line.w-80 { width: 80%; }
.skeleton-card .sk-line.w-60 { width: 60%; }
.skeleton-card .sk-line.w-40 { width: 40%; }
html[data-theme="dark"] .skeleton,
html[data-theme="dark"] .skeleton-card .sk-img,
html[data-theme="dark"] .skeleton-card .sk-line { background: #1F2937; }

/* ══ MICRO-ANIMATIONS (point 31) ══════════════════════════════════════════ */
/* Boutons — feedback tactile */
.btn:active, .btn-compact:active, .btn-primary:active {
  transform: scale(0.96);
  transition: transform 80ms ease;
}
/* Cards — hover lift */
.devoir-card, .card, .feature-card, .matiere-card-glass {
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1), box-shadow 0.25s ease;
}
.devoir-card:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(124,58,237,0.14); }
/* Favori — heartbeat */
@keyframes heartbeat {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.35); }
  60%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}
.fav-btn.active, .fav-btn:active { animation: heartbeat 0.4s ease; color: #EF4444; }
/* Spinner inline sur boutons de soumission */
@keyframes spin-inline { to { transform: rotate(360deg); } }
.btn-loading::after {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin-inline 0.7s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}
/* Formulaires — focus ring amélioré */
.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--violet);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
  transition: border-color 0.2s, box-shadow 0.2s;
}
/* Lazy image placeholder */
img[loading="lazy"] {
  background: #F3F4F6;
  min-height: 40px;
}
html[data-theme="dark"] img[loading="lazy"] { background: #1F2937; }

/* ── ANIMATIONS DE FOND ── */
.section { position:relative;overflow:hidden; }
.section::before { content:'';position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(124,58,237,.04) 0%,transparent 70%);top:-100px;right:-100px;animation:sectionFloat 12s ease-in-out infinite;will-change:transform;pointer-events:none;z-index:0; }
.section::after { content:'';position:absolute;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(14,165,233,.04) 0%,transparent 70%);bottom:-60px;left:-60px;animation:sectionFloat 16s ease-in-out infinite reverse;will-change:transform;pointer-events:none;z-index:0; }
@keyframes sectionFloat { 0%,100%{transform:translateY(0)} 33%{transform:translateY(-20px)} 66%{transform:translateY(10px)} }
.section > .container { position:relative;z-index:1; }

/* Petits points décoratifs animés */
.section-dots {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.section-dots span {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(124,58,237,.12);
  animation: dotFloat linear infinite;
}
@keyframes dotFloat {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* Barre de progression animée pour les cartes */
.card-progress-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--violet), var(--electric));
  border-radius: 3px;
  /* opacity-only — évite le reflow causé par scaleX */
  animation: progressPulse 2s ease-in-out infinite;
  will-change: opacity;
}
@keyframes progressPulse {
  0%, 100% { opacity: .6; }
  50%       { opacity: 1; }
}

/* Shimmer sur les cartes en chargement */
.card-shimmer {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Pulse doux sur les badges importants */
/* opacity-only → pas de reflow, pas de repaint de layout */
.badge-pulse {
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.7; }
}

/* Entrée en fondu des cartes — défini ligne ~363, doublon supprimé */

/* ══════════════════════════════════════════════════════════════════════════
   AMÉLIORATIONS AUDIT — Points 7/8/10/15/22/34/56
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Point 7 : Contraste WCAG AA — textes secondaires renforcés ── */
.text-muted, .muted, [class*="text-muted"] { color: #4B5563 !important; } /* ratio 7:1 sur blanc */
.footer-col ul li a { color: rgba(255,255,255,.65) !important; } /* ratio 4.6:1 sur fond sombre */
.feature-desc, .section-desc { color: #4B5563; }

/* ── Point 8 : Font-size minimum 16px sur mobile ── */
@media (max-width: 640px) {
  html { font-size: 16px !important; }
  body { font-size: 1rem; }
  .form-input, .form-select, input, select, textarea { font-size: 16px !important; } /* évite zoom iOS */
  p, li, td, th { font-size: 0.9375rem; } /* 15px minimum */
}

/* ── Point 10 : Focus visible amélioré (WCAG 2.1 AA) ── */
:focus-visible {
  outline: 3px solid #7C3AED;
  outline-offset: 2px;
  border-radius: 4px;
}
a:focus-visible, button:focus-visible {
  outline: 3px solid #7C3AED;
  outline-offset: 3px;
  border-radius: 6px;
}
/* Supprimer outline sur clic souris, garder sur clavier */
:focus:not(:focus-visible) { outline: none; }

/* ── Point 15 : Zones tactiles 44×44px minimum sur mobile ── */
@media (max-width: 768px) {
  .btn, .btn-compact, .nav-btn, .tab-btn, .filter-btn {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .fav-btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .mobile-menu-link {
    min-height: 48px;
    display: flex;
    align-items: center;
  }
  /* Inputs plus grands sur mobile */
  .form-input, .form-select {
    min-height: 44px;
    padding: 10px 14px;
  }
}

/* ── Point 56 : Badges visuels "Vu" / "Téléchargé" sur cartes ── */
.card-badge-seen,
.card-badge-downloaded {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .03em;
  pointer-events: none;
  z-index: 2;
  backdrop-filter: blur(4px);
}
.card-badge-seen {
  background: rgba(16,185,129,.85);
  color: white;
}
.card-badge-downloaded {
  background: rgba(124,58,237,.85);
  color: white;
}
.devoir-card-top { position: relative; } /* assure le positionnement des badges */

/* ── Point 34 : Responsive images — placeholder aspect-ratio ── */
.img-responsive-wrap {
  position: relative;
  overflow: hidden;
  background: #F3F4F6;
}
.img-responsive-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
html[data-theme="dark"] .img-responsive-wrap { background: #1F2937; }

/* ── Amélioration toast (Point 27 amélioré) ── */
/* Position de base sur desktop : en bas à droite, au-dessus du speed dial */
.toast-container { bottom: 80px; }
@media (max-width: 768px) {
  /* Sur mobile : au-dessus de la bottom nav (58px) + safe area */
  .toast-container {
    bottom: calc(70px + env(safe-area-inset-bottom, 0px));
    right: 12px;
    left: 12px;
    top: auto;
  }
  .toast { min-width: unset; max-width: 100%; width: 100%; }
}

/* ── Indicateur progression multi-étapes (Point 27) ── */
.step-indicator {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 24px;
}
.step-indicator .step {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}
.step-indicator .step-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: .85rem;
  color: var(--muted);
  flex-shrink: 0;
  transition: all .3s;
}
.step-indicator .step.active .step-dot {
  background: var(--violet);
  border-color: var(--violet);
  color: white;
  box-shadow: 0 0 0 4px rgba(124,58,237,.2);
}
.step-indicator .step.done .step-dot {
  background: var(--lime);
  border-color: var(--lime);
  color: white;
}
.step-indicator .step-line {
  flex: 1;
  height: 2px;
  background: var(--border);
  transition: background .3s;
}
.step-indicator .step.done + .step .step-line,
.step-indicator .step.done .step-line { background: var(--lime); }
.step-indicator .step-label {
  font-size: .75rem;
  font-weight: 700;
  color: var(--muted);
  white-space: nowrap;
}
.step-indicator .step.active .step-label { color: var(--violet); }
.step-indicator .step.done .step-label { color: var(--lime-d); }

/* ══════════════════════════════════════════════════════
   AMÉLIORATIONS — Points 14, 19, 20, 54
   ══════════════════════════════════════════════════════ */

/* ── Point 14 : Boutons min-height 44px sur mobile (WCAG 2.5.5) ── */
@media (max-width: 640px) {
  .btn, .fav-btn, .btn-sm, .btn-lg,
  button[type="submit"], button[type="button"],
  .mobile-menu-link, .nav-link, .tab-btn {
    min-height: 44px;
    min-width: 44px;
  }
}

/* ── Point 19 : Transitions de page (View Transitions API + fallback) ── */
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pageFadeOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-6px); }
}
.page-transition-enter {
  animation: pageFadeIn 0.18s ease forwards;
}
.page-transition-exit {
  animation: pageFadeOut 0.18s ease forwards;
}
/* View Transitions API (Chrome 111+) */
@supports (view-transition-name: root) {
  ::view-transition-old(root) {
    animation: 120ms ease-out both fade-out;
  }
  ::view-transition-new(root) {
    animation: 180ms ease-in both fade-in;
  }
  @keyframes fade-out { to { opacity: 0; } }
  @keyframes fade-in  { from { opacity: 0; } }
}

/* ── Point 20 : Barre de progression de lecture ── */
#reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--violet), var(--violet-l));
  z-index: 9999;
  transition: width 0.1s linear;
  pointer-events: none;
  border-radius: 0 2px 2px 0;
}

/* ── Point 54 : Contraste --muted renforcé (ratio 7:1 AAA) ── */
:root {
  --muted: #4B5563;
}

/* ── Point 51 : Skip link accessibilité ── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--violet);
  color: white;
  padding: 10px 18px;
  border-radius: 0 0 8px 8px;
  font-weight: 800;
  font-size: .9rem;
  z-index: 99999;
  text-decoration: none;
  transition: top .15s;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

/* ── Point 18 : Empty states illustrés ── */
.empty-state-illustrated {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  gap: 16px;
}
.empty-state-illustrated .esi-icon {
  font-size: 4rem;
  line-height: 1;
  filter: grayscale(0.2);
}
.empty-state-illustrated h3 {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--dark);
  margin: 0;
}
.empty-state-illustrated p {
  font-size: .88rem;
  color: var(--muted);
  max-width: 320px;
  margin: 0;
}

/* ── Point 15 : Optimistic update favoris ── */
.fav-btn {
  transition: transform .15s cubic-bezier(.34,1.56,.64,1), color .15s, background .15s;
}
.fav-btn.fav-optimistic-active {
  color: var(--coral) !important;
  background: #FEE2E2 !important;
  transform: scale(1.2);
}
.fav-btn.fav-optimistic-inactive {
  color: var(--muted) !important;
  background: transparent !important;
  transform: scale(0.9);
}

/* ══ SKELETON SCREENS SHIMMER (Point 11) ══════════════════════════════════ */
/* Note: @keyframes shimmer already defined above — reusing it */
.skeleton-shimmer {
  background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}
.skeleton-card { height: 200px; border-radius: 16px; margin-bottom: 16px; }
.skeleton-text { height: 14px; border-radius: 4px; margin-bottom: 8px; }
.skeleton-text.w-75 { width: 75%; }
.skeleton-text.w-50 { width: 50%; }
.skeleton-avatar { width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0; }
.skeleton-title { height: 20px; border-radius: 6px; margin-bottom: 12px; }
[data-theme="dark"] .skeleton-shimmer {
  background: linear-gradient(90deg, #2d2d2d 25%, #3a3a3a 50%, #2d2d2d 75%);
  background-size: 200% 100%;
}

/* ══════════════════════════════════════════════════════════════════════════
   AUDIT MOBILE v2 — Corrections #16 à #40
   ══════════════════════════════════════════════════════════════════════════ */

/* #16 — Toasts frontend : géré dans le bloc "Amélioration toast" ci-dessus */

/* #17 — Modal frontend : padding réduit sur mobile */
@media (max-width: 640px) {
  .modal-body   { padding: 16px !important; }
  .modal-header { padding: 14px 16px !important; }
}

/* #18 — Admin sidebar design.css : responsive sur mobile */
@media (max-width: 768px) {
  .admin-layout  { flex-direction: column !important; }
  .admin-sidebar {
    width: 100% !important;
    height: auto !important;
    position: relative !important;
    top: auto !important;
  }
  .admin-topbar { padding: 0 12px !important; }  /* #40 */
}

/* #34 — Container padding réduit sur mobile */
@media (max-width: 640px) {
  .container { padding: 0 16px !important; }
}

/* #35 — Section padding réduit sur mobile */
@media (max-width: 640px) {
  .section { padding: 40px 0 !important; }
}

/* #36 — Quiz container padding réduit sur mobile */
@media (max-width: 640px) {
  .quiz-container { padding: 20px 16px !important; }
}

/* #37 — Hero title taille réduite sur très petit écran */
@media (max-width: 480px) {
  .hero-title { font-size: 1.6rem !important; }
}

/* #38 — Désactiver animations de fond sur mobile (performance) */
@media (max-width: 768px) {
  .section::before,
  .section::after {
    animation: none !important;
  }
  .section-dots {
    display: none !important;
  }
}

/* #39 — Désactiver float shapes sur mobile */
@media (max-width: 768px) {
  .float-shape {
    animation: none !important;
  }
}

/* Premium Filter UI - Added for State-of-the-art Experience */
.premium-filter-wrap {
  background: white;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1.5px solid rgba(0,0,0,0.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
  margin-bottom: 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.premium-filter-wrap:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.05);
}
.filters-form {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.filter-item {
  flex: 1;
  min-width: 140px;
}
.filter-label {
  display: none;
}
.filter-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.filter-icon {
  position: absolute;
  left: 12px;
  width: 16px;
  height: 16px;
  color: #94a3b8;
  pointer-events: none;
  z-index: 2;
}
.filter-input,
.filter-select {
  width: 100%;
  height: 40px;
  padding: 0 32px 0 36px;
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #1e293b;
  transition: all 0.2s;
}
.filter-select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}
.filter-input:focus,
.filter-select:focus {
  background: white;
  border-color: #7c3aed;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
  outline: none;
}
.filter-actions {
  display: flex;
  gap: 8px;
  height: 40px;
}
.btn-filter-submit {
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 0 16px;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
  height: 40px;
}
.btn-filter-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.35);
}
.btn-filter-reset {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content:center;
  background: #f1f5f9;
  color: #64748b;
  border-radius: 10px;
  border: 1.5px solid #e2e8f0;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-filter-reset:hover {
  background: #e2e8f0;
  color: #1e293b;
}
@media (max-width: 640px) {
  .filters-form { flex-direction: column; align-items: stretch; }
  .filter-actions { margin-top: 10px; }
  .btn-filter-submit { flex: 1; justify-content: center; }
}