/* ==========================================================================
   MATHS COLLÈGE MAROC - FEUILLE DE STYLES PRINCIPALE
   Charte graphique : Académique, Moderne, Épurée et Responsive
   ========================================================================== */

/* ----------------- VARIABLES & DESIGN TOKENS (LIGHT MODE STRICT) ----------------- */
:root {
  color-scheme: light only !important;
  supported-color-schemes: light;
  /* Palette de couleurs */
  --color-primary: #1d4ed8;       /* Bleu royal vif */
  --color-primary-dark: #0f2744;  /* Bleu nuit institutionnel */
  --color-primary-light: #3b82f6; /* Bleu interactif */
  --color-primary-subtle: #eff6ff;/* Fond bleu très doux */

  /* Charte Graphique par Cycle : COLLÈGE (Nuances de Vert) */
  --college-primary: #059669;       /* Vert émeraude */
  --college-dark: #064e3b;          /* Vert forêt profond */
  --college-light: #10b981;         /* Vert menthe vif */
  --college-subtle: #ecfdf5;        /* Fond menthe doux */
  --college-border: #a7f3d0;        /* Bordure menthe */
  --college-gradient: linear-gradient(135deg, #059669 0%, #047857 100%);
  --college-shadow: 0 10px 25px -5px rgba(5, 150, 105, 0.2);

  /* Charte Graphique par Cycle : LYCÉE (Nuances de Bleu) */
  --lycee-primary: #1d4ed8;         /* Bleu roi */
  --lycee-dark: #0f2744;            /* Bleu marine nuit */
  --lycee-light: #3b82f6;           /* Bleu ciel vif */
  --lycee-subtle: #eff6ff;          /* Fond bleu doux */
  --lycee-border: #bfdbfe;          /* Bordure bleu ciel */
  --lycee-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  --lycee-shadow: 0 10px 25px -5px rgba(29, 78, 216, 0.2);

  --color-accent-teal: #059669;   /* 1ère année */
  --color-accent-blue: #0284c7;   /* 2ème année */
  --color-accent-indigo: #0d9488; /* 3ème année */
  --color-accent-gold: #d97706;   /* Conseils & Révision */
  --color-accent-emerald: #059669;/* Validé */

  --color-pdf: #dc2626;           /* Rouge PDF */
  --color-pdf-bg: #fef2f2;
  --color-word: #2563eb;          /* Bleu Word */
  --color-word-bg: #eff6ff;

  /* Neutres */
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-muted: #f1f5f9;
  --text-main: #0f172a;           /* Noir ardoise */
  --text-muted: #475569;          /* Gris ardoise secondaire */
  --text-light: #94a3b8;          /* Gris ardoise clair */
  --border-color: #e2e8f0;
  --border-focus: #93c5fd;

  /* Ombres & Élévations */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-hover: 0 14px 28px -5px rgba(29, 78, 216, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.06);

  /* Rayons de courbure */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Conteneur */
  --container-max: 1280px;
}

/* ----------------- RESET & BASE STYLES ----------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  color-scheme: light only !important;
  background-color: #f8fafc !important;
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  color-scheme: light only !important;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-body) !important;
  color: var(--text-main) !important;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ----------------- CYCLE THEME ENFORCEMENT ----------------- */
body[data-cycle="college"] {
  --color-primary: #059669;
  --color-primary-dark: #064e3b;
  --color-primary-light: #10b981;
  --color-primary-subtle: #ecfdf5;
  --border-focus: #a7f3d0;
  --shadow-hover: 0 14px 28px -5px rgba(5, 150, 105, 0.15), 0 8px 10px -6px rgba(5, 150, 105, 0.08);
}

body[data-cycle="college"] .logo-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light, #10b981) 0%, var(--color-primary, #059669) 50%, var(--color-primary-dark, #064e3b) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.site-logo:hover .logo-badge {
  transform: scale(1.05);
}

body[data-cycle="college"] .nav-link.active,
body[data-cycle="college"] .nav-link:hover {
  color: #059669;
  background-color: #ecfdf5;
}

body[data-cycle="college"] .rubric-btn-icon,
body[data-cycle="college"] .rubric-icon-box {
  background: #ecfdf5 !important;
  color: #059669 !important;
  border: 1px solid #a7f3d0 !important;
}
body[data-cycle="college"] .rubric-btn:hover,
body[data-cycle="college"] .semester-rubric-card:hover {
  border-color: #059669 !important;
  background: #f0fdf4 !important;
}
body[data-cycle="college"] .rubric-btn:hover .rubric-btn-icon,
body[data-cycle="college"] .semester-rubric-card:hover .rubric-icon-box {
  background: #059669 !important;
  color: #ffffff !important;
  border-color: #059669 !important;
}

body[data-cycle="college"] .chapter-num-badge {
  background: #ecfdf5 !important;
  color: #059669 !important;
  border-color: #a7f3d0 !important;
}
body[data-cycle="college"] .btn-chapter-action.highlight {
  background: #ecfdf5 !important;
  color: #059669 !important;
  border-color: #a7f3d0 !important;
}
body[data-cycle="college"] .btn-chapter-action:hover,
body[data-cycle="college"] .btn-chapter-action.highlight:hover {
  background: #059669 !important;
  color: white !important;
  border-color: #059669 !important;
}
body[data-cycle="college"] .semester-tab.active {
  background: #059669 !important;
  color: white !important;
  border-color: #059669 !important;
}
body[data-cycle="college"] .level-badge-pill,
body[data-cycle="college"] .level-badge {
  background: #ecfdf5 !important;
  color: #065f46 !important;
  border: 1px solid #a7f3d0 !important;
}

body[data-cycle="lycee"] {
  --color-primary: #1d4ed8;
  --color-primary-dark: #0f2744;
  --color-primary-light: #3b82f6;
  --color-primary-subtle: #eff6ff;
  --border-focus: #bfdbfe;
  --shadow-hover: 0 14px 28px -5px rgba(29, 78, 216, 0.15), 0 8px 10px -6px rgba(29, 78, 216, 0.08);
}

body[data-cycle="lycee"] .logo-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light, #10b981) 0%, var(--color-primary, #059669) 50%, var(--color-primary-dark, #064e3b) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.site-logo:hover .logo-badge {
  transform: scale(1.05);
}

body[data-cycle="lycee"] .nav-link.active,
body[data-cycle="lycee"] .nav-link:hover {
  color: #1d4ed8;
  background-color: #eff6ff;
}

body[data-cycle="lycee"] .rubric-btn-icon,
body[data-cycle="lycee"] .rubric-icon-box {
  background: #eff6ff !important;
  color: #1d4ed8 !important;
  border: 1px solid #bfdbfe !important;
}
body[data-cycle="lycee"] .rubric-btn:hover,
body[data-cycle="lycee"] .semester-rubric-card:hover {
  border-color: #1d4ed8 !important;
  background: #f8faff !important;
}
body[data-cycle="lycee"] .rubric-btn:hover .rubric-btn-icon,
body[data-cycle="lycee"] .semester-rubric-card:hover .rubric-icon-box {
  background: #1d4ed8 !important;
  color: #ffffff !important;
  border-color: #1d4ed8 !important;
}

body[data-cycle="lycee"] .chapter-num-badge {
  background: #eff6ff !important;
  color: #1d4ed8 !important;
  border-color: #bfdbfe !important;
}
body[data-cycle="lycee"] .btn-chapter-action.highlight {
  background: #eff6ff !important;
  color: #1d4ed8 !important;
  border-color: #bfdbfe !important;
}
body[data-cycle="lycee"] .btn-chapter-action:hover,
body[data-cycle="lycee"] .btn-chapter-action.highlight:hover {
  background: #1d4ed8 !important;
  color: white !important;
  border-color: #1d4ed8 !important;
}
body[data-cycle="lycee"] .semester-tab.active {
  background: #1d4ed8 !important;
  color: white !important;
  border-color: #1d4ed8 !important;
}
body[data-cycle="lycee"] .level-badge-pill,
body[data-cycle="lycee"] .level-badge {
  background: #eff6ff !important;
  color: #1e40af !important;
  border: 1px solid #bfdbfe !important;
}

/* ----------------- PAGE D'ACCUEIL MINIMALISTE ----------------- */
.home-hero-container {
  min-height: calc(100vh - 76px - 60px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 1.5rem;
}

.home-hero-content {
  text-align: center;
  max-width: 860px;
}

.home-hero-prompt {
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
  margin-bottom: 2.75rem;
}

.home-cycle-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 650px;
  margin: 0 auto;
}

.cycle-action-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.35rem 1.75rem;
  border-radius: var(--radius-xl);
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.cycle-action-btn .cycle-btn-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.cycle-action-btn .cycle-btn-label {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.cycle-action-btn .cycle-btn-arrow {
  transition: transform var(--transition-fast);
}

.cycle-action-btn:hover {
  transform: translateY(-4px);
}

.cycle-action-btn:hover .cycle-btn-arrow {
  transform: translateX(4px);
}

.cycle-action-btn:hover .cycle-btn-icon {
  transform: scale(1.08);
}

/* Bouton Collège : Vert */
.cycle-btn-college {
  background: #ffffff;
  color: #064e3b;
  border: 2px solid #a7f3d0;
}

.cycle-btn-college .cycle-btn-icon {
  background: #ecfdf5;
  color: #059669;
}

.cycle-btn-college:hover {
  background: #059669;
  color: #ffffff;
  border-color: #059669;
  box-shadow: 0 12px 24px -4px rgba(5, 150, 105, 0.35);
}

.cycle-btn-college:hover .cycle-btn-icon {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* Bouton Lycée : Bleu */
.cycle-btn-lycee {
  background: #ffffff;
  color: #0f2744;
  border: 2px solid #bfdbfe;
}

.cycle-btn-lycee .cycle-btn-icon {
  background: #eff6ff;
  color: #1d4ed8;
}

.cycle-btn-lycee:hover {
  background: #1d4ed8;
  color: #ffffff;
  border-color: #1d4ed8;
  box-shadow: 0 12px 24px -4px rgba(29, 78, 216, 0.35);
}

.cycle-btn-lycee:hover .cycle-btn-icon {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* ==========================================================================
   FOOTER ACADÉMIQUE PAR CYCLE (VERT COLLÈGE / BLEU LYCÉE / LISIBILITÉ MAXIMALE)
   ========================================================================== */
.site-footer {
  background: linear-gradient(180deg, #0f172a 0%, #090e1a 100%) !important;
  border-top: 3px solid #3b82f6 !important;
  color: #e2e8f0 !important;
  padding: 4rem 0 2rem !important;
  margin-top: auto;
  font-size: 0.92rem;
}

/* Palette Cycle Collège : Vert profond & Textes Lumineux Haute Visibilité */
body[data-cycle="college"] .site-footer {
  background: linear-gradient(180deg, #064e3b 0%, #043628 100%) !important;
  border-top: 3px solid #10b981 !important;
}

/* Palette Cycle Lycée : Bleu nuit & Textes Lumineux Haute Visibilité */
body[data-cycle="lycee"] .site-footer {
  background: linear-gradient(180deg, #0f2744 0%, #091a30 100%) !important;
  border-top: 3px solid #3b82f6 !important;
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

/* Logo dans le footer : 100% net et lisible */
.footer-brand .site-logo {
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.site-footer .site-logo .logo-badge {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
  border: 2px solid rgba(255, 255, 255, 0.6) !important;
}

.site-footer .site-logo .logo-title {
  color: #ffffff !important;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.site-footer .site-logo .logo-title span {
  color: #38bdf8 !important;
}

body[data-cycle="college"] .site-footer .site-logo .logo-title span {
  color: #34d399 !important;
}

body[data-cycle="lycee"] .site-footer .site-logo .logo-title span {
  color: #60a5fa !important;
}

.site-footer .site-logo .logo-sub {
  color: #cbd5e1 !important;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

body[data-cycle="college"] .site-footer .site-logo .logo-sub {
  color: #a7f3d0 !important;
}

body[data-cycle="lycee"] .site-footer .site-logo .logo-sub {
  color: #bfdbfe !important;
}

/* Description dans le footer */
.footer-brand-desc {
  color: #e2e8f0 !important;
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
  max-width: 320px;
}

/* Badge Officiel BIOF */
.footer-badge-biof {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: rgba(255, 255, 255, 0.14) !important;
  color: #ffffff !important;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  backdrop-filter: blur(8px);
  width: fit-content;
}

.footer-badge-biof svg {
  color: #ffffff !important;
}

body[data-cycle="college"] .footer-badge-biof svg {
  color: #34d399 !important;
}

body[data-cycle="lycee"] .footer-badge-biof svg {
  color: #60a5fa !important;
}

/* Titres de colonnes */
.footer-col-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: #ffffff !important;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: -0.01em;
}

.footer-col-title .col-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.col-indicator.college {
  background-color: #34d399 !important;
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.35) !important;
}

.col-indicator.lycee {
  background-color: #60a5fa !important;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.35) !important;
}

.col-indicator.quick {
  background-color: #fbbf24 !important;
  box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.35) !important;
}

/* Liens des colonnes : Blanc lumineux & Contraste AAA */
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-list li a {
  color: #e2e8f0 !important;
  font-size: 0.92rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: all var(--transition-fast);
}

.footer-links-list li a:hover {
  color: #ffffff !important;
  transform: translateX(5px);
  text-decoration: underline;
  text-underline-offset: 3px;
}

body[data-cycle="college"] .footer-links-list li a:hover {
  color: #6ee7b7 !important;
}

body[data-cycle="lycee"] .footer-links-list li a:hover {
  color: #93c5fd !important;
}

/* Barre Inférieure (Bottom Bar) */
.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.16) !important;
  padding-top: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-bottom-copy {
  color: #ffffff !important;
  font-weight: 600;
}

.footer-bottom-pedagogy {
  color: #cbd5e1 !important;
  font-weight: 500;
}

body[data-cycle="college"] .footer-bottom-pedagogy {
  color: #a7f3d0 !important;
}

body[data-cycle="lycee"] .footer-bottom-pedagogy {
  color: #bfdbfe !important;
}

@media (max-width: 1024px) {
  .footer-main-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.25rem;
  }
}

@media (max-width: 640px) {
  .home-cycle-actions {
    grid-template-columns: 1fr;
  }
  .site-footer {
    padding: 2.75rem 0 1.5rem !important;
  }
  .footer-main-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
    gap: 0.6rem;
  }
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ----------------- HEADER & NAVIGATION ----------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light, #10b981) 0%, var(--color-primary, #059669) 50%, var(--color-primary-dark, #064e3b) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.site-logo:hover .logo-badge {
  transform: scale(1.05);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  line-height: 1.15;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
}

.logo-title span {
  color: var(--color-primary);
  margin-left: 0.28rem;
}

.logo-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Navigation principale */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.6rem 1rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
}

/* Menu Déroulant Collège (Dropdown) */
.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.dropdown-arrow {
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown.is-open .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  padding: 0.75rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 100;
  list-style: none;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.is-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--bg-muted);
  transform: translateX(4px);
}

.dropdown-item-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.dropdown-item-icon.teal {
  background: #ccfbf1;
  color: #0f766e;
}

.dropdown-item-icon.blue {
  background: #e0f2fe;
  color: #0369a1;
}

.dropdown-item-icon.indigo {
  background: #e0e7ff;
  color: #4338ca;
}

.dropdown-item-content {
  display: flex;
  flex-direction: column;
}

.dropdown-item-title {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-main);
}

.dropdown-item-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Header Actions (Boutons droite) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 6px 16px rgba(15, 39, 68, 0.3);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background-color: var(--bg-muted);
  border-color: var(--text-light);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* Mode simulation connecté/visiteur */
.user-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.75rem;
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-status-pill:hover {
  background: #e2e8f0;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #94a3b8;
}

.user-status-pill.logged-in .status-dot {
  background: var(--color-accent-emerald);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.2);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  padding: 0.5rem;
  color: var(--text-main);
}

/* ----------------- SECTION HÉRO & CONSEILS ----------------- */
.hero-section {
  position: relative;
  background: linear-gradient(180deg, #f0f7ff 0%, var(--bg-body) 100%);
  padding: 4rem 0 3.5rem;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -100px;
  right: -50px;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: #dbeafe;
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-primary-dark);
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

/* Statistiques Héro */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Encart Spécial Conseils & Méthodologie */
.hero-tips-box {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  padding: 2rem;
  position: relative;
}

.tips-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.tips-icon-badge {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: #fef3c7;
  color: #b45309;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tips-header-text h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary-dark);
}

.tips-header-text p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tips-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.tip-card-mini {
  display: flex;
  gap: 1rem;
  background: var(--bg-muted);
  border-radius: var(--radius-md);
  padding: 1rem;
  border-left: 4px solid var(--color-primary);
  transition: transform var(--transition-fast);
}

.tip-card-mini:hover {
  transform: translateX(3px);
  background: #eef4ff;
}

.tip-num {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.tip-content-mini h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}

.tip-content-mini p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ----------------- SECTION NIVEAUX DU COLLÈGE ----------------- */
.levels-section {
  padding: 3.5rem 0 2rem;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

.section-subtitle {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.level-card-overview {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem 1.75rem 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: space-between;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.level-card-overview:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.12);
  border-color: var(--color-primary-light);
}

.level-card-top {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 1.25rem;
}

.level-card-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.level-card-sub {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.level-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.level-topics-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

/* ----------------- CARTES DE SÉLECTION D'ÉTAPE (SEMESTRE & TYPE) ----------------- */
.breadcrumb-trail {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumb-trail a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.breadcrumb-trail a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: #94a3b8;
  font-size: 0.8rem;
}

.selection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
  margin-top: 1.5rem;
}

/* LISTE VERTICALE DES SEMESTRES */
.vertical-selection-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 860px;
  margin: 1.5rem auto 0;
}

.semester-row-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
  gap: 1.5rem;
  border-left: 6px solid var(--color-primary);
}

.semester-row-card.semester-2 {
  border-left-color: #10b981;
}

.semester-row-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px -6px rgba(15, 23, 42, 0.12);
  border-color: var(--color-primary-light);
  border-left-color: var(--color-primary);
}

.semester-row-card.semester-2:hover {
  border-left-color: #059669;
}

.semester-row-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
}

.semester-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.semester-icon-box.blue {
  background: #eff6ff;
  color: var(--color-primary);
  border: 1px solid #bfdbfe;
}

.semester-icon-box.green {
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #bbf7d0;
}

.semester-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.semester-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin: 0;
}

.semester-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

.semester-row-action {
  flex-shrink: 0;
}

.btn-semester {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  background: var(--bg-muted);
  color: var(--color-primary-dark);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.semester-row-card:hover .btn-semester {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.semester-row-card.semester-2:hover .btn-semester {
  background: #059669;
  color: white;
  border-color: #059669;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
}

@media (max-width: 768px) {
  .semester-row-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem;
    gap: 1rem;
  }
  .semester-row-action {
    width: 100%;
  }
  .btn-semester {
    width: 100%;
    justify-content: center;
  }
}

.selection-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem 2.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: space-between;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.selection-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
  border-color: var(--color-primary-light);
}

.selection-card-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: transform var(--transition-fast);
}

.selection-card:hover .selection-card-icon {
  transform: scale(1.08);
}

.selection-card-icon.blue {
  background: #eff6ff;
  color: var(--color-primary);
  border: 1px solid #bfdbfe;
}

.selection-card-icon.green {
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #bbf7d0;
}

.selection-card-icon.amber {
  background: #fffbeb;
  color: #d97706;
  border: 1px solid #fde68a;
}

.selection-card-icon.indigo {
  background: #eef2ff;
  color: #4f46e5;
  border: 1px solid #c7d2fe;
}

.selection-card-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.selection-card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.75rem;
  max-width: 320px;
}

.selection-card-btn {
  width: 100%;
  padding: 0.85rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-muted);
  color: var(--color-primary-dark);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.selection-card:hover .selection-card-btn {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}
.subscription-section {
  padding: 3rem 0;
}

.subscription-card {
  background: linear-gradient(135deg, #0f2744 0%, #1e40af 100%);
  color: white;
  border-radius: var(--radius-xl);
  padding: 3.5rem 3rem;
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.sub-glow {
  position: absolute;
  top: -100px;
  right: -50px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.25) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.sub-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.sub-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.sub-desc {
  font-size: 1.05rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.sub-benefits {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sub-benefit-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: #f1f5f9;
}

.benefit-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #10b981;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.sub-form-box {
  background: white;
  color: var(--text-main);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.sub-form-box h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.35rem;
}

.sub-form-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.quick-signup-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* ----------------- VITRINE DES DOCUMENTS & CARTES ----------------- */
.resources-section {
  padding: 4rem 0;
}

/* Barre de recherche épurée */
.filter-toolbar {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.65rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.toolbar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 280px;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.85rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  background: var(--bg-body);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  background: white;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.search-clear {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  font-size: 0.9rem;
  display: none;
}

.search-clear.visible {
  display: block;
}

/* Filtres par Niveau */
.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-right: 0.35rem;
}

.filter-pill {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg-muted);
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.filter-pill:hover {
  background: #e2e8f0;
  color: var(--text-main);
}

.filter-pill.active {
  background: var(--color-primary-dark);
  color: white;
  border-color: var(--color-primary-dark);
}

.filter-pill[data-level="1ac"].active {
  background: var(--color-accent-teal);
  border-color: var(--color-accent-teal);
}

.filter-pill[data-level="2ac"].active {
  background: var(--color-accent-blue);
  border-color: var(--color-accent-blue);
}

.filter-pill[data-level="3ac"].active {
  background: var(--color-accent-indigo);
  border-color: var(--color-accent-indigo);
}

.toolbar-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.category-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.cat-pill {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--bg-body);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.cat-pill:hover, .cat-pill.active {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}

.results-count-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Grille / Liste Réduite des Ressources */
.cards-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ÉLÉMENT DE LISTE RÉDUITE (COMPACT LIST ITEM) */
.resource-list-item {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.resource-list-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
  transform: translateX(3px);
}

.resource-item-left {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex: 1;
  min-width: 0;
}

.resource-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fee2e2;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.resource-item-details {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.resource-item-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
  margin: 0;
}

.resource-item-meta {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.resource-item-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.btn-list-action {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border: none;
}

.btn-list-preview {
  background: #eff6ff;
  color: var(--color-primary);
  border: 1px solid #bfdbfe;
}

.btn-list-preview:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.btn-list-download {
  background: var(--color-primary);
  color: white;
  border: 1px solid var(--color-primary);
}

.btn-list-download:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 2px 8px rgba(15, 39, 68, 0.25);
}

/* Boutons d'action spécifiques : Cours & Résumé */
.btn-list-course {
  background: #f0fdf4;
  color: #065f46;
  border: 1px solid #a7f3d0;
  box-shadow: 0 1px 3px rgba(6, 95, 70, 0.08);
}

.btn-list-course:hover {
  background: #059669;
  color: white;
  border-color: #059669;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
  transform: translateY(-1px);
}

.btn-list-resume {
  background: #fffbeb;
  color: #b45309;
  border: 1px solid #fde68a;
  box-shadow: 0 1px 3px rgba(180, 83, 9, 0.08);
}

.btn-list-resume:hover {
  background: #d97706;
  color: white;
  border-color: #d97706;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
  transform: translateY(-1px);
}

.meta-badge-duo {
  display: inline-flex;
  align-items: center;
  background: #ecfdf5;
  color: #047857;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
  border: 1px solid #a7f3d0;
}

.icon-cours {
  background: #ecfdf5 !important;
  color: #059669 !important;
  border-color: #a7f3d0 !important;
}

@media (max-width: 768px) {
  .resource-list-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 1rem;
  }
  .resource-item-title {
    white-space: normal;
  }
  .resource-item-actions {
    width: 100%;
    justify-content: flex-start;
  }
  .btn-list-action {
    flex: 1;
    justify-content: center;
  }
}

.resource-card.is-locked {
  background: #fafcff;
}

/* En-tête de carte : Tag de niveau & Format */
.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.15rem;
}

.card-level-tag {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Format visuel de fichier */
.card-format-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.card-format-badge.pdf {
  background-color: var(--color-pdf-bg);
  color: var(--color-pdf);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.card-format-badge.word {
  background-color: var(--color-word-bg);
  color: var(--color-word);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

/* Titre du document */
.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.4;
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
}

/* Metas (Catégorie, Semestre, Taille) */
.card-meta-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1.15rem;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Encart Conseil de Révision / Description */
.card-tip-box {
  background: var(--bg-muted);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--color-primary-light);
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.card-tip-box strong {
  color: var(--color-primary-dark);
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Boutons d'action conditionnels (Visualiser & Télécharger) */
.card-footer-action {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 0.65rem;
  align-items: center;
}

.card-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.88rem;
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

/* Bouton Visualiser (Aperçu direct sans téléchargement) */
.card-btn.btn-preview {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  border: 1px solid rgba(37, 99, 235, 0.25);
}

.card-btn.btn-preview:hover {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
  transform: translateY(-1px);
}

/* Style Télécharger (style primaire) */
.card-btn.btn-download {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(29, 78, 216, 0.2);
}

.card-btn.btn-download:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(15, 39, 68, 0.25);
  transform: translateY(-1px);
}

/* Style S'inscrire pour accéder (avec cadenas) */
.card-btn.btn-locked {
  background-color: #f1f5f9;
  color: #334155;
  border: 1px solid #cbd5e1;
  grid-column: span 2;
}

.card-btn.btn-locked:hover {
  background-color: #e2e8f0;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.lock-icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
}

.card-btn.btn-locked:hover .lock-icon-wrapper {
  color: var(--color-primary);
}

/* ==========================================================================
   MODALE VISUALISEUR DE DOCUMENTS (PDF VIEWER) OPTIMISÉE MOBILE & DESKTOP
   ========================================================================== */
.pdf-viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.pdf-viewer-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.pdf-viewer-container {
  background: #0f172a;
  border-radius: var(--radius-xl);
  width: 95vw;
  max-width: 1080px;
  height: 92vh;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96) translateY(12px);
  transition: all var(--transition-normal);
}

.pdf-viewer-overlay.is-active .pdf-viewer-container {
  transform: scale(1) translateY(0);
}

.pdf-viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: #0f172a;
  color: white;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  gap: 0.75rem;
  z-index: 10;
}

.pdf-viewer-title-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

.pdf-viewer-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(220, 38, 38, 0.2);
  color: #ef4444;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pdf-viewer-info {
  min-width: 0;
  flex: 1;
}

.pdf-viewer-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: white;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.pdf-viewer-meta {
  font-size: 0.75rem;
  color: #94a3b8;
  display: block;
}

.pdf-viewer-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.pdf-page-indicator {
  font-size: 0.78rem;
  font-weight: 600;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  white-space: nowrap;
}

.pdf-zoom-group {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  overflow: hidden;
}

.pdf-tool-btn {
  background: transparent;
  border: none;
  color: #cbd5e1;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.15s ease;
}

.pdf-tool-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: white;
}

.pdf-header-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pdf-btn-print {
  background: #059669;
  color: white;
}

.pdf-btn-print:hover {
  background: #047857;
  color: white;
}

.pdf-btn-print:active {
  transform: translateY(1px);
}

.pdf-btn-print:disabled,
.pdf-btn-print.is-printing {
  opacity: 0.75;
  cursor: wait;
}

.pdf-btn-spinner {
  animation: pdfSpin 0.8s linear infinite;
  display: inline-block;
  vertical-align: middle;
}

.pdf-btn-download {
  background: var(--color-primary);
  color: white;
}

.pdf-btn-download:hover {
  background: #1e40af;
  color: white;
}

.pdf-btn-close {
  background: rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  width: 32px;
  height: 32px;
  padding: 0;
  justify-content: center;
  border-radius: 8px;
}

.pdf-btn-close:hover {
  background: #ef4444;
  color: white;
}

.pdf-viewer-body {
  flex: 1;
  background: #1e293b;
  position: relative;
  overflow-y: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem 0.5rem;
}

.pdf-pages-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
  max-width: 100%;
}

.pdf-page-card {
  background: white;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  overflow: hidden;
  max-width: 100%;
  position: relative;
  transition: transform 0.2s ease;
}

.pdf-page-canvas {
  display: block;
  max-width: 100%;
  height: auto !important;
}

.pdf-interactive-link-overlay,
.pdf-footer-link-overlay {
  cursor: pointer !important;
  transition: background-color 0.15s ease;
}

.pdf-interactive-link-overlay:hover,
.pdf-footer-link-overlay:hover {
  background-color: rgba(2, 132, 199, 0.08) !important;
}

/* Spinner de chargement */
.pdf-loading-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
  color: #e2e8f0;
  margin: auto;
}

.pdf-spinner {
  width: 42px;
  height: 42px;
  border: 3.5px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--color-primary-light);
  border-radius: 50%;
  animation: pdfSpin 0.8s linear infinite;
}

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

/* État Erreur / Fallback */
.pdf-error-box {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: white;
  margin: auto;
  max-width: 480px;
}

.pdf-error-box.visible {
  display: flex;
}

.pdf-error-box h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: #f87171;
}

.pdf-error-box p {
  color: #94a3b8;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.pdf-error-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ----------------- RESPONSIVE SMARTPHONE (< 768px) ----------------- */
@media (max-width: 768px) {
  .pdf-viewer-overlay {
    padding: 0 !important;
  }
  
  .pdf-viewer-container {
    width: 100vw !important;
    height: 100vh !important;
    height: 100dvh !important;
    max-width: 100vw !important;
    border-radius: 0 !important;
  }

  .pdf-viewer-header {
    padding: 0.55rem 0.75rem;
    gap: 0.5rem;
  }

  .pdf-viewer-icon {
    width: 28px;
    height: 28px;
  }

  .pdf-viewer-title {
    font-size: 0.88rem;
  }

  .pdf-viewer-meta {
    font-size: 0.7rem;
  }

  .pdf-zoom-group {
    display: none;
  }

  .pdf-btn-print span,
  .pdf-btn-download span {
    display: none;
  }

  .pdf-btn-print,
  .pdf-btn-download {
    padding: 0.4rem 0.6rem;
  }

  .pdf-viewer-body {
    padding: 0.75rem 0.25rem;
  }

  .pdf-page-card {
    border-radius: 2px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  }
}

/* État Aucun résultat */
.no-results-box {
  grid-column: 1 / -1;
  background: white;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-color);
  padding: 4rem 2rem;
  text-align: center;
  display: none;
}

.no-results-box.visible {
  display: block;
}

.no-results-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  color: var(--text-light);
}

/* ----------------- SECTION MÉTHODOLOGIE & ÉTAPES ----------------- */
.methodology-section {
  background: white;
  padding: 4.5rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.method-card {
  background: var(--bg-body);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border-color);
  position: relative;
  transition: all var(--transition-normal);
}

.method-card:hover {
  background: white;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.method-step-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: #dbeafe;
  color: var(--color-primary);
  font-weight: 800;
  font-size: 0.78rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.method-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.method-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.method-highlight {
  background: white;
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--color-accent-gold);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

/* ----------------- MODALS ----------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: white;
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: scale(0.95) translateY(10px);
  transition: all var(--transition-normal);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-overlay.is-active .modal-container {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-muted);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close-btn:hover {
  background: #e2e8f0;
  color: var(--text-main);
}

.modal-header-nav {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-muted);
}

.modal-tab-btn {
  flex: 1;
  padding: 1rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
  background: transparent;
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
}

.modal-tab-btn.active {
  color: var(--color-primary);
  background: white;
  border-bottom-color: var(--color-primary);
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.auth-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}

.auth-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.auth-submit-btn {
  width: 100%;
  padding: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  margin-top: 0.5rem;
}

/* Modale de prévisualisation de document */
.doc-modal-container {
  max-width: 680px;
}

.doc-preview-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background: var(--bg-muted);
  margin-bottom: 1.5rem;
}

.doc-mock-sheet {
  background: white;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  font-family: monospace;
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ----------------- TOAST NOTIFICATIONS ----------------- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 3000;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 1.35rem;
  background: white;
  color: var(--text-main);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
  transform: translateX(100%);
  opacity: 0;
  transition: all var(--transition-normal);
  max-width: 420px;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast.success {
  border-left-color: var(--color-accent-emerald);
}

.toast.info {
  border-left-color: var(--color-primary);
}

/* [Ancien bloc footer legacy supprimé - remplacé par le footer moderne par cycle en tête de fichier] */

/* ----------------- RESPONSIVE DESIGN ----------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .levels-grid {
    grid-template-columns: 1fr;
  }
  .subscription-card {
    grid-template-columns: 1fr;
    padding: 2.5rem 2rem;
  }
  .methodology-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    height: calc(100vh - 76px);
    background: white;
    flex-direction: column;
    align-items: stretch;
    padding: 2rem 1.5rem;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-xl);
    z-index: 999;
  }

  .main-nav.is-active {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    margin-top: 0.5rem;
    display: none;
  }

  .nav-dropdown.is-open .dropdown-menu {
    display: block;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ==========================================================================
   REFONTE ARCHITECTURE : ESPACES ÉLÈVES / ENSEIGNANTS, CYCLES & CHAPITRES
   ========================================================================== */

/* 1. PORTAIL DOUBLE PAR CYCLE */
.portal-hero-section {
  padding: 3.5rem 0 3rem;
  background: linear-gradient(180deg, #f0fdf4 0%, #eff6ff 50%, #f8fafc 100%);
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.portal-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: #dbeafe;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.portal-hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.portal-hero-title span.highlight-green {
  color: var(--college-primary);
}

.portal-hero-title span.highlight-blue {
  color: var(--lycee-primary);
}

.portal-hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.portal-dual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 1rem;
  text-align: left;
}

.portal-choice-card {
  position: relative;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.portal-choice-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

/* CARTE CYCLE COLLÈGE (VERT) */
.portal-choice-card.college {
  border-color: var(--college-border);
  background: linear-gradient(180deg, #ffffff 0%, var(--college-subtle) 100%);
}

.portal-choice-card.college:hover {
  border-color: var(--college-primary);
  box-shadow: var(--college-shadow);
}

.portal-choice-card.college .portal-icon-wrapper {
  background: var(--college-gradient);
  box-shadow: 0 8px 16px rgba(5, 150, 105, 0.25);
}

.portal-choice-card.college h2 {
  color: var(--college-dark);
}

.btn-portal-college {
  background: var(--college-primary);
  color: white;
}

.btn-portal-college:hover {
  background: var(--college-dark);
  color: white;
}

/* CARTE CYCLE LYCÉE (BLEU) */
.portal-choice-card.lycee {
  border-color: var(--lycee-border);
  background: linear-gradient(180deg, #ffffff 0%, var(--lycee-subtle) 100%);
}

.portal-choice-card.lycee:hover {
  border-color: var(--lycee-primary);
  box-shadow: var(--lycee-shadow);
}

.portal-choice-card.lycee .portal-icon-wrapper {
  background: var(--lycee-gradient);
  box-shadow: 0 8px 16px rgba(29, 78, 216, 0.25);
}

.portal-choice-card.lycee h2 {
  color: var(--lycee-dark);
}

.btn-portal-lycee {
  background: var(--lycee-primary);
  color: white;
}

.btn-portal-lycee:hover {
  background: var(--lycee-dark);
  color: white;
}

.portal-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.portal-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.portal-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
}

.portal-tag.green {
  background: var(--college-subtle);
  color: var(--college-dark);
  border: 1px solid var(--college-border);
}

.portal-tag.blue {
  background: var(--lycee-subtle);
  color: var(--lycee-dark);
  border: 1px solid var(--lycee-border);
}

.portal-choice-card h2 {
  font-size: 1.65rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.portal-choice-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.portal-features-list {
  list-style: none;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.portal-features-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
}

.portal-choice-card.college .portal-features-list li svg {
  color: var(--college-primary);
  flex-shrink: 0;
}

.portal-choice-card.lycee .portal-features-list li svg {
  color: var(--lycee-primary);
  flex-shrink: 0;
}

.btn-portal {
  width: 100%;
  padding: 0.9rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all var(--transition-fast);
}

/* 2. SÉLECTEUR DE CYCLE DANS L'ESPACE ÉLÈVES */
.cycle-switcher-wrapper {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 0.5rem;
  display: inline-flex;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2.5rem;
  gap: 0.5rem;
}

.cycle-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 2rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: transparent;
}

.cycle-tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-muted);
}

.cycle-tab-btn.college.active {
  background: var(--college-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.cycle-tab-btn.lycee.active {
  background: var(--lycee-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.3);
}

.cycle-content-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.cycle-content-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 3. CARTES DE NIVEAUX COLLÈGE & LYCÉE */
.level-portal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}

.level-portal-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.level-portal-card.college:hover {
  border-color: var(--college-primary);
}

.level-portal-card.lycee:hover {
  border-color: var(--lycee-primary);
}

.level-badge-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.badge-college { background: var(--college-subtle); color: var(--college-dark); border: 1px solid var(--college-border); }
.badge-lycee { background: var(--lycee-subtle); color: var(--lycee-dark); border: 1px solid var(--lycee-border); }

.badge-teal { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.badge-blue { background: #d1fae5; color: #065f46; border: 1px solid #6ee7b7; }
.badge-indigo { background: #059669; color: #ffffff; border: 1px solid #047857; }

.badge-purple { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }
.badge-amber { background: #dbeafe; color: #1d4ed8; border: 1px solid #93c5fd; }
.badge-rose { background: #1d4ed8; color: #ffffff; border: 1px solid #1e40af; }

/* THÈMES CONTEXTUELS AUTOMATIQUES PAR CYCLE (data-cycle="college" ou data-cycle="lycee") */
body[data-cycle="college"] .semester-tab.active {
  color: var(--college-dark);
  background: var(--college-subtle);
  border-bottom: 3px solid var(--college-primary);
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.15);
}

body[data-cycle="college"] .semester-tab:hover {
  color: var(--college-primary);
  background: var(--college-subtle);
}

body[data-cycle="college"] .chapter-num-badge {
  background: var(--college-subtle);
  color: var(--college-primary);
  border-color: var(--college-border);
}

body[data-cycle="college"] .chapter-card-row:hover {
  border-color: var(--college-light);
}

body[data-cycle="college"] .btn-chapter-action.highlight {
  background: var(--college-subtle);
  color: var(--college-primary);
  border-color: var(--college-border);
}

body[data-cycle="college"] .btn-chapter-action.highlight:hover {
  background: var(--college-primary);
  color: white;
  border-color: var(--college-primary);
}

body[data-cycle="college"] .btn-primary {
  background: var(--college-primary);
  border-color: var(--college-primary);
}

body[data-cycle="college"] .btn-primary:hover {
  background: var(--college-dark);
  border-color: var(--college-dark);
}

/* THÈME LYCÉE (data-cycle="lycee") */
body[data-cycle="lycee"] .semester-tab.active {
  color: var(--lycee-primary);
  background: var(--lycee-subtle);
  border-bottom: 3px solid var(--lycee-primary);
  box-shadow: 0 2px 8px rgba(29, 78, 216, 0.15);
}

body[data-cycle="lycee"] .semester-tab:hover {
  color: var(--lycee-primary);
  background: var(--lycee-subtle);
}

body[data-cycle="lycee"] .chapter-num-badge {
  background: var(--lycee-subtle);
  color: var(--lycee-primary);
  border-color: var(--lycee-border);
}

body[data-cycle="lycee"] .chapter-card-row:hover {
  border-color: var(--lycee-light);
}

body[data-cycle="lycee"] .btn-chapter-action.highlight {
  background: var(--lycee-subtle);
  color: var(--lycee-primary);
  border-color: var(--lycee-border);
}

body[data-cycle="lycee"] .btn-chapter-action.highlight:hover {
  background: var(--lycee-primary);
  color: white;
  border-color: var(--lycee-primary);
}

body[data-cycle="lycee"] .btn-primary {
  background: var(--lycee-primary);
  border-color: var(--lycee-primary);
}

body[data-cycle="lycee"] .btn-primary:hover {
  background: var(--lycee-dark);
  border-color: var(--lycee-dark);
}

/* 4. SÉLECTEUR DE SEMESTRE SUR LA PAGE DU NIVEAU */
.semester-tabs-container {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.semester-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.semester-tab:hover {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.semester-tab.active {
  color: var(--color-primary);
  background: #dbeafe;
  box-shadow: 0 2px 6px rgba(29, 78, 216, 0.15);
}

.semester-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.semester-pane.active {
  display: block;
}

/* 5. LISTE ORDONNÉE DES CHAPITRES */
.ordered-chapters-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chapter-card-row {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: all var(--transition-fast);
}

.chapter-card-row:hover {
  border-color: #93c5fd;
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.chapter-card-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex: 1;
}

.chapter-num-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: #eff6ff;
  color: var(--color-primary);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid #bfdbfe;
}

.chapter-details {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.chapter-title-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.chapter-desc-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.chapter-actions-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn-chapter-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: white;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.btn-chapter-action:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-chapter-action.highlight {
  background: #eff6ff;
  color: var(--color-primary);
  border-color: #bfdbfe;
}

.btn-chapter-action.highlight:hover {
  background: var(--color-primary);
  color: white;
}

.btn-chapter-action.teacher-fiche {
  background: #f0fdfa;
  color: #0f766e;
  border-color: #99f6e4;
}

.btn-chapter-action.teacher-fiche:hover {
  background: #0f766e;
  color: white;
  border-color: #0f766e;
}

.btn-chapter-action.serie-btn {
  background: #fdf4ff;
  color: #a21caf;
  border-color: #f0abfc;
}

.btn-chapter-action.serie-btn:hover {
  background: #a21caf;
  color: white;
  border-color: #a21caf;
}

.btn-chapter-action.btn-chapter-resume {
  background: #fffbeb;
  color: #b45309;
  border-color: #fde68a;
}

.btn-chapter-action.btn-chapter-resume:hover {
  background: #d97706;
  color: white;
  border-color: #d97706;
  box-shadow: 0 2px 6px rgba(217, 119, 6, 0.25);
}

/* 6. ESPACE ENSEIGNANTS SPÉCIFIQUE */
.teacher-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.teacher-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.teacher-card:hover {
  border-color: #0d9488;
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

/* 7. GRILLE DES 4 BOUTONS PRINCIPAUX ULTRA-ÉPURÉS */
.semester-four-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin: 1.5rem 0 2.5rem;
}

.rubric-btn, .semester-rubric-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: #ffffff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.rubric-btn-icon, .rubric-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.rubric-btn-label, .rubric-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 0;
  line-height: 1.2;
}

/* Thème Collège */
body[data-cycle="college"] .rubric-btn-icon,
body[data-cycle="college"] .rubric-icon-box {
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
}

body[data-cycle="college"] .rubric-btn:hover,
body[data-cycle="college"] .semester-rubric-card:hover {
  border-color: #059669;
  background: #f0fdf4;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(5, 150, 105, 0.15);
}

body[data-cycle="college"] .rubric-btn:hover .rubric-btn-icon,
body[data-cycle="college"] .semester-rubric-card:hover .rubric-icon-box {
  background: #059669;
  color: #ffffff;
  border-color: #059669;
}

/* Thème Lycée */
body[data-cycle="lycee"] .rubric-btn-icon,
body[data-cycle="lycee"] .rubric-icon-box {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

body[data-cycle="lycee"] .rubric-btn:hover,
body[data-cycle="lycee"] .semester-rubric-card:hover {
  border-color: #1d4ed8;
  background: #f8faff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(29, 78, 216, 0.15);
}

body[data-cycle="lycee"] .rubric-btn:hover .rubric-btn-icon,
body[data-cycle="lycee"] .semester-rubric-card:hover .rubric-icon-box {
  background: #1d4ed8;
  color: #ffffff;
  border-color: #1d4ed8;
}

@media (max-width: 680px) {
  .semester-four-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }
  .rubric-btn, .semester-rubric-card {
    padding: 1rem 1.25rem;
  }
}

@media (max-width: 900px) {
  .semester-four-grid {
    grid-template-columns: 1fr;
    gap: 1.15rem;
  }
}

@media (max-width: 768px) {
  .portal-dual-grid {
    grid-template-columns: 1fr;
  }
  .chapter-card-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .chapter-actions-group {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .cycle-switcher-wrapper {
    width: 100%;
    display: flex;
  }
  .cycle-tab-btn {
    flex: 1;
    justify-content: center;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }
}

/* ==========================================================================
   STYLE ÉPURÉ DU PARCOURS DE SÉLECTION (CYCLE -> NIVEAU -> SEMESTRE)
   ========================================================================== */
.choice-page-main {
  min-height: calc(100vh - 76px - 340px);
  padding: 3rem 0 5rem;
  display: flex;
  align-items: center;
}

.choice-page-content {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
}

.choice-header-box {
  text-align: center;
  margin: 2rem 0 3rem;
}

.choice-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.choice-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  font-weight: 600;
}

.choice-buttons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.choice-buttons-grid.choice-two-buttons {
  grid-template-columns: repeat(2, 1fr);
  max-width: 740px;
  margin: 0 auto;
}

.choice-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.6rem 2rem;
  background: #ffffff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.choice-btn-badge {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 800;
  flex-shrink: 0;
  transition: all var(--transition-normal);
}

.choice-btn-info {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.choice-btn-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.choice-btn-desc {
  font-size: 0.92rem;
  font-weight: 600;
  margin-top: 0.35rem;
}

.choice-btn-arrow {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

/* Thème Collège (Vert) */
.choice-btn-college {
  border: 2px solid #a7f3d0;
  color: #064e3b;
}

.choice-btn-college .choice-btn-badge {
  background: #ecfdf5;
  color: #059669;
}

.choice-btn-college .choice-btn-desc {
  color: #047857;
}

.choice-btn-college .choice-btn-arrow {
  color: #10b981;
}

.choice-btn-college:hover {
  background: #059669;
  border-color: #059669;
  color: #ffffff;
  transform: translateY(-4px);
  box-shadow: 0 14px 28px -4px rgba(5, 150, 105, 0.35);
}

.choice-btn-college:hover .choice-btn-badge {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.choice-btn-college:hover .choice-btn-desc {
  color: rgba(255, 255, 255, 0.9);
}

.choice-btn-college:hover .choice-btn-arrow {
  color: #ffffff;
  transform: translateX(4px);
}

/* Thème Lycée (Bleu) */
.choice-btn-lycee {
  border: 2px solid #bfdbfe;
  color: #0f2744;
}

.choice-btn-lycee .choice-btn-badge {
  background: #eff6ff;
  color: #1d4ed8;
}

.choice-btn-lycee .choice-btn-desc {
  color: #2563eb;
}

.choice-btn-lycee .choice-btn-arrow {
  color: #3b82f6;
}

.choice-btn-lycee:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
  color: #ffffff;
  transform: translateY(-4px);
  box-shadow: 0 14px 28px -4px rgba(29, 78, 216, 0.35);
}

.choice-btn-lycee:hover .choice-btn-badge {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.choice-btn-lycee:hover .choice-btn-desc {
  color: rgba(255, 255, 255, 0.9);
}

.choice-btn-lycee:hover .choice-btn-arrow {
  color: #ffffff;
  transform: translateX(4px);
}

@media (max-width: 820px) {
  .choice-buttons-grid,
  .choice-buttons-grid.choice-two-buttons {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   IMPRESSION DIRECTE DU VISUALISEUR PDF & DOCUMENTS
   ========================================================================== */
@media print {
  body.pdf-viewer-open > *:not(.pdf-viewer-overlay) {
    display: none !important;
  }

  body.pdf-viewer-open .pdf-viewer-overlay {
    position: static !important;
    inset: auto !important;
    background: transparent !important;
    padding: 0 !important;
    display: block !important;
    overflow: visible !important;
    z-index: 1 !important;
  }

  body.pdf-viewer-open .pdf-viewer-container {
    box-shadow: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
    overflow: visible !important;
    border: none !important;
  }

  body.pdf-viewer-open .pdf-viewer-header,
  body.pdf-viewer-open .pdf-loading-box,
  body.pdf-viewer-open .pdf-error-box {
    display: none !important;
  }

  body.pdf-viewer-open .pdf-viewer-body {
    background: transparent !important;
    padding: 0 !important;
    overflow: visible !important;
    display: block !important;
    height: auto !important;
  }

  body.pdf-viewer-open .pdf-pages-container {
    gap: 0 !important;
    display: block !important;
    width: 100% !important;
    padding: 0 !important;
  }

  body.pdf-viewer-open .pdf-page-card {
    box-shadow: none !important;
    border-radius: 0 !important;
    border: none !important;
    margin: 0 !important;
    padding: 0 !important;
    background: transparent !important;
    page-break-after: always !important;
    break-after: page !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    width: 100% !important;
    min-height: 100vh !important;
    transform: none !important;
  }

  body.pdf-viewer-open .pdf-page-card:last-child {
    page-break-after: auto !important;
    break-after: auto !important;
  }

  body.pdf-viewer-open .pdf-page-canvas {
    max-width: 100% !important;
    max-height: 100vh !important;
    width: auto !important;
    height: auto !important;
    display: block !important;
    box-shadow: none !important;
    object-fit: contain !important;
  }
}

/* ==========================================================================
   COMPOSANT SÉRIES D'EXERCICES AVEC SOUS-MENUS PAR CHAPITRE (ACCORDÉON)
   ========================================================================== */
.series-chapters-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
}

.series-chapter-accordion {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.series-chapter-accordion:hover {
  border-color: #6ee7b7;
  box-shadow: var(--shadow-md);
}

.series-chapter-accordion.is-open {
  border-color: var(--college-primary);
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.12);
}

.series-chapter-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.4rem;
  background: white;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: 1rem;
  transition: background 0.15s ease;
}

.series-chapter-toggle:hover {
  background: #f0fdf4;
}

.series-chapter-accordion.is-open .series-chapter-toggle {
  background: #ecfdf5;
  border-bottom: 1px solid #d1fae5;
}

.series-chapter-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
}

.series-chapter-num {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #ecfdf5;
  color: var(--college-dark);
  font-weight: 800;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid #a7f3d0;
}

.series-chapter-accordion.is-open .series-chapter-num {
  background: var(--college-primary);
  color: white;
  border-color: var(--college-primary);
}

.series-chapter-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: #064e3b;
  line-height: 1.35;
}

.series-chapter-header-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

.series-count-pill {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  background: #e6f4ea;
  color: #047857;
  border: 1px solid #bbf7d0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.series-chevron-icon {
  color: #059669;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.series-chapter-accordion.is-open .series-chevron-icon {
  transform: rotate(180deg);
}

/* Corps du sous-menu / Accordéon */
.series-chapter-body {
  padding: 1.15rem 1.4rem;
  background: #fdfdfd;
  display: none;
  animation: fadeInSeries 0.2s ease;
}

.series-chapter-accordion.is-open .series-chapter-body {
  display: block;
}

@keyframes fadeInSeries {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.series-subitems-grid,
.series-subitems-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.series-item-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: white;
  border: 1px solid #e2e8f0;
  border-left: 3.5px solid #059669;
  border-radius: 8px;
  gap: 1.25rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.series-item-box:hover {
  border-color: #059669;
  background: #f0fdf4;
  transform: translateX(3px);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.1);
}

.series-item-box:nth-child(2),
.series-item-box.series-item-s2 {
  border-left-color: #2563eb;
}

.series-item-box:nth-child(2):hover,
.series-item-box.series-item-s2:hover {
  border-color: #2563eb;
  background: #f8faff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
}

.series-item-tag {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.series-badge-num {
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.28rem 0.7rem;
  border-radius: 6px;
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.series-item-box:nth-child(2) .series-badge-num,
.series-item-box.series-item-s2 .series-badge-num {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: #bfdbfe;
}

.series-item-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1e293b;
}

.series-buttons-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.btn-sub-serie {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.48rem 0.95rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.btn-sub-serie.btn-view {
  background: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.btn-sub-serie.btn-view:hover {
  background: #059669;
  color: white;
  border-color: #059669;
  box-shadow: 0 2px 6px rgba(5, 150, 105, 0.25);
}

.btn-sub-serie.btn-download {
  background: #f8fafc;
  color: #475569;
  border-color: #cbd5e1;
}

.btn-sub-serie.btn-download:hover {
  background: #0f172a;
  color: white;
  border-color: #0f172a;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.2);
}

@media (max-width: 640px) {
  .series-item-box {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
  }
  
  .series-buttons-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    gap: 0.5rem;
  }
  
  .btn-sub-serie {
    justify-content: center;
    padding: 0.55rem 0.75rem;
  }
}