/* ===== PWA STYLES ===== */

/* Bouton d'installation PWA */
.install-pwa-btn {
    background: linear-gradient(135deg, #059669, #047857);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.5rem;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.install-pwa-btn.show {
    transform: translateY(0);
    opacity: 1;
}

.install-pwa-btn.hide {
    transform: translateY(-20px);
    opacity: 0;
}

.install-pwa-btn:hover {
    background: linear-gradient(135deg, #047857, #065f46);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 150, 105, 0.4);
}

.install-pwa-btn i {
    font-size: 1rem;
}

/* Notification de mise à jour */
.update-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 10000;
    max-width: 300px;
}

.update-notification.show {
    transform: translateX(0);
}

.update-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.update-content i {
    color: #0284c7;
    font-size: 1.25rem;
}

.update-content span {
    font-weight: 600;
    color: #1f2937;
    flex: 1;
}

.update-content .btn {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    margin: 0.25rem 0;
}

/* Mode PWA (quand installée) */
.pwa-mode {
    --navbar-padding-top: env(safe-area-inset-top);
}

.pwa-mode .navbar {
    padding-top: calc(1rem + env(safe-area-inset-top));
}

.pwa-mode .container {
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
}

/* Dark mode pour PWA */
[data-theme="dark"] .install-pwa-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

[data-theme="dark"] .install-pwa-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

[data-theme="dark"] .update-notification {
    background: #374151;
    border-color: #4b5563;
    color: #f9fafb;
}

[data-theme="dark"] .update-content span {
    color: #f9fafb;
}

[data-theme="dark"] .update-content i {
    color: #60a5fa;
}

/* ===== ANIMATIONS MODERNES ===== */
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-4px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes slideInUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes ripple {
  0% { transform: scale(0); opacity: 1; }
  100% { transform: scale(4); opacity: 0; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes progress {
  0% { width: 0%; }
  100% { width: 100%; }
}

@keyframes loading-dots {
  0%, 20% { opacity: 0; }
  50% { opacity: 1; }
  100% { opacity: 0; }
}

/* ===== ANIMATIONS SUPPLÉMENTAIRES ===== */

/* Animations d'entrée pour les éléments */
.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.slide-in-up {
  animation: slideInUp 0.6s ease-out forwards;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(-30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInRight {
  from { transform: translateX(30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Animation de pulsation pour les éléments importants */
.pulse-glow {
  animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { 
    box-shadow: 0 0 5px rgba(2, 132, 199, 0.3);
  }
  50% { 
    box-shadow: 0 0 20px rgba(2, 132, 199, 0.6);
  }
}

/* Animation de rotation pour les icônes */
.rotate-on-hover {
  transition: transform 0.3s ease;
}

.rotate-on-hover:hover {
  transform: rotate(360deg);
}

/* Animation de rebond pour les boutons importants */
.bounce-on-click {
  transition: transform 0.2s ease;
}

.bounce-on-click:active {
  transform: scale(0.95);
}

/* ===== VARIABLES CSS ===== */
:root {
  /* Couleurs principales - Palette professionnelle chaleureuse */
  --primary-color: #1e293b;
  --primary-light: #334155;
  --primary-dark: #0f172a;
  --secondary-color: #0284c7;
  --secondary-light: #0ea5e9;
  --secondary-dark: #0369a1;
  --accent-color: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  
  /* Couleurs neutres améliorées */
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --background: #ffffff;
  --surface: #f1f5f9;
  --surface-elevated: #ffffff;
  --surface-hover: #f8fafc;
  --border: #cbd5e1;
  --border-light: #e2e8f0;
  
  /* États (mode clair) */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Typographie moderne - Scale harmonieuse */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  
  /* Scale typographique harmonieuse (ratio 1.25) */
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px - base */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.563rem;    /* 25px */
  --font-size-3xl: 1.953rem;    /* 31px */
  --font-size-4xl: 2.441rem;    /* 39px */
  --font-size-5xl: 3.052rem;    /* 49px */
  
  /* Poids de police */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Line heights optimisés */
  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --line-height-loose: 1.8;
  
  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Rayons */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  
  /* Transitions */
  --transition: all 0.2s ease-in-out;
}

/* Mode sombre */
[data-theme="dark"] {
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --background: #0f172a;
  --surface: #1e293b;
  --surface-elevated: #334155;
  --surface-hover: #475569;
  --border: #475569;
  --border-light: #334155;
  
  /* Ajuster les couleurs primaires pour le contraste */
  --primary-color: #e2e8f0;
  --primary-light: #f1f5f9;
  --primary-dark: #cbd5e1;
  
  /* États pour mode sombre */
  --success: #22c55e;
  --warning: #fbbf24;
  --error: #f87171;
  --info: #60a5fa;
}

/* ===== RESET ET BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  color: var(--text-primary);
  background-color: var(--background);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition), color var(--transition);
}

/* ===== TYPOGRAPHIE ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
  margin-bottom: 0.5em;
  letter-spacing: -0.025em;
  scroll-margin-top: 2rem;
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: 1rem;
  margin-top: 0;
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

h2:first-child {
  margin-top: 0;
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

p {
  margin-bottom: 1rem;
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  max-width: 65ch;
}

p:last-child {
  margin-bottom: 0;
}

/* Texte d'introduction */
.lead {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 60ch;
}

/* Classes utilitaires typographiques */
.text-xs { font-size: var(--font-size-xs); line-height: var(--line-height-normal); }
.text-sm { font-size: var(--font-size-sm); line-height: var(--line-height-normal); }
.text-base { font-size: var(--font-size-base); line-height: var(--line-height-relaxed); }
.text-lg { font-size: var(--font-size-lg); line-height: var(--line-height-relaxed); }
.text-xl { font-size: var(--font-size-xl); line-height: var(--line-height-snug); }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

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

a:hover {
  color: var(--primary-dark);
}

/* ===== CONTENEUR ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===== NAVIGATION MODERNE ===== */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.3s ease;
}

/* Navbar en mode sombre */
[data-theme="dark"] .navbar {
  background: var(--surface-elevated);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .navbar.scrolled {
  background: var(--surface-elevated);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  transition: min-height 0.3s ease;
}

.navbar.scrolled .nav-container {
  min-height: 64px;
}

.nav-brand a {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: white;
  text-decoration: none;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
  position: relative;
  overflow: hidden;
}

.nav-brand a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.5s;
}

.nav-brand a:hover::before {
  left: 100%;
}

.nav-brand a:hover {
  transform: scale(1.1) rotate(5deg);
  color: white;
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.3);
}

.navbar.scrolled .nav-brand a {
  width: 48px;
  height: 48px;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-xl);
  color: var(--text-secondary);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateY(0);
  white-space: nowrap;
  position: relative;
  background: transparent;
  border: 2px solid transparent;
}

/* Liens avec icône uniquement (padding réduit) */
.nav-link[href="/recherche"],
.nav-link[href="/prive"],
.nav-link[href^="https://forge.apps.education.fr"] {
  padding: var(--spacing-sm);
}



.nav-link:hover,
.nav-link.active {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.1), rgba(245, 158, 11, 0.1));
  color: var(--primary-color);
  transform: translateY(-2px);
  border-color: var(--secondary-color);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.2);
}

/* Tooltips pour les icônes sans texte */
.nav-link[href="/recherche"]:hover::after,
.nav-link[href="/prive"]:hover::after,
.nav-link[href="/admin"]:hover::after {
  content: attr(title);
  position: absolute;
  bottom: -35px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--text-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  z-index: 1000;
}

.nav-link[href="/recherche"]:hover::after {
  content: "Recherche";
}

.nav-link[href="/prive"]:hover::after {
  content: "Espace privé";
}

.nav-link[href="/admin"]:hover::after {
  content: "Administration";
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== ACTUALITÉS ===== */
.news-section {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  color: white;
  padding: 0;
}

.news-banner {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  margin-bottom: 1px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.news-banner:last-child {
  margin-bottom: 0;
  border-bottom: none;
}

.news-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.news-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.news-content strong {
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.news-text {
  opacity: 0.9;
  font-size: var(--font-size-base);
}

.news-date {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  flex-shrink: 0;
  font-weight: 500;
}

/* ===== SECTIONS PRINCIPALES ===== */
.hero-section {
  background-color: var(--surface);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.profile-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary-color);
  box-shadow: var(--shadow-lg);
}

.hero-text h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  font-weight: 700;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--primary-color);
  font-weight: 600;
}

.hero-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  color: var(--text-secondary);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  text-align: justify;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.page-header {
  background-color: var(--surface);
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid var(--border);
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: 0;
}

.page-actions {
  margin-top: var(--spacing-lg);
}

.content-section {
  padding: var(--spacing-2xl) 0;
}

/* ===== CARTES DE CONTENU ===== */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

/* ===== CARDS MODERNES ===== */
.content-card {
  background: linear-gradient(145deg, var(--surface-elevated) 0%, var(--surface-hover) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.content-card:hover::before {
  transform: scaleX(1);
}

.content-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.1);
  border-color: var(--secondary-color);
}

.card-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xl);
  color: white;
  font-size: var(--font-size-3xl);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.2);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: rotate(45deg);
  transition: transform 0.6s;
}

.content-card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.3);
}

.content-card:hover .card-icon::before {
  transform: rotate(45deg) translate(50%, 50%);
}

.content-card h3 {
  margin: var(--spacing-lg) 0;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--font-size-xl);
  transition: color 0.3s ease;
}

.content-card:hover h3 {
  color: var(--primary-color);
}

.content-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  transition: color 0.3s ease;
}

.content-card:hover p {
  color: var(--text-primary);
}

/* ===== SECTION LICENCE ===== */
.license-section {
  background-color: var(--surface);
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-2xl) 0;
}

.license-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

.license-content h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-xl);
}

.license-content ul {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
}

.license-content li {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

/* ===== CLASSES ET DOCUMENTS ===== */
.class-section {
  margin-bottom: var(--spacing-3xl);
}

.class-section h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.class-intro {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.class-intro .markdown-content {
  max-width: none;
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
}

.empty-state-inline {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-muted);
  background: var(--surface);
  border-radius: var(--radius-xl);
  border: 2px dashed var(--border);
}

/* ===== DOCUMENTS ===== */
.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.document-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.document-card-link:hover {
  text-decoration: none;
  color: inherit;
}

.document-card {
  background: linear-gradient(145deg, var(--surface-elevated) 0%, var(--surface-hover) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  animation: slideInUp 0.6s ease-out;
}

.document-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--secondary-color), var(--accent-color));
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s ease;
}

.document-card:hover::before {
  transform: scaleY(1);
}

.document-card:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12), 0 6px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px) scale(1.01);
  animation: float 2s ease-in-out infinite;
}

.document-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
  position: relative;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
  transition: all 0.3s ease;
}

.document-card:hover .document-icon {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

.private-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  background-color: var(--warning);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
}

.document-content {
  flex: 1;
}

.document-content h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.document-chapter {
  color: var(--primary-color);
  font-weight: 500;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.document-description {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.document-meta {
  display: flex;
  gap: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.document-actions {
  display: flex;
  align-items: center;
}

.download-btn {
  pointer-events: none;
  user-select: none;
}

.download-text {
  display: none;
}

@media (max-width: 768px) {
  .download-text {
    display: inline;
  }
}

/* ===== BOUTONS MODERNES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-xl);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: var(--font-size-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transform: translateY(0);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
  z-index: 0;
}

.btn > * {
  position: relative;
  z-index: 1;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
  color: white;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.3);
  animation: breathe 2s ease-in-out infinite;
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.98);
  transition: all 0.1s;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.15);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 8px 25px rgba(2, 132, 199, 0.25);
}

.btn-outline {
  border: 2px solid var(--border);
  background-color: transparent;
  color: var(--text-primary);
  box-shadow: none;
}

.btn-outline:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.15);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
  box-shadow: none;
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background-color: var(--surface-hover);
  color: var(--primary-color);
  border-color: var(--border);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ===== FORMULAIRES ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* ===== AUTHENTIFICATION ===== */
.auth-container {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  background-color: var(--surface);
}

.auth-card {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.auth-icon {
  width: 64px;
  height: 64px;
  background-color: var(--primary-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  color: white;
  font-size: var(--font-size-2xl);
}

.auth-icon.admin {
  background-color: var(--warning);
}

.auth-footer {
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

/* ===== ALERTES ===== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.alert-info {
  background-color: rgb(59 130 246 / 0.1);
  border: 1px solid rgb(59 130 246 / 0.2);
  color: var(--info);
}

.alert-error {
  background-color: rgb(239 68 68 / 0.1);
  border: 1px solid rgb(239 68 68 / 0.2);
  color: var(--error);
}

/* ===== RECHERCHE ===== */
.search-form-container {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.search-input-group {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.search-input {
  flex: 1;
  padding: var(--spacing-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
}

.search-button {
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.search-button:hover {
  background-color: var(--primary-dark);
}

/* ===== ÉTATS VIDES ===== */
.empty-state {
  text-align: center;
  padding: var(--spacing-3xl);
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-lg);
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--primary-color);
  color: white;
  padding: var(--spacing-2xl) 0;
  margin-top: var(--spacing-3xl);
}

/* Footer en mode sombre */
[data-theme="dark"] .footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

/* ===== RÉSEAUX SOCIAUX ===== */
.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
  font-size: var(--font-size-lg);
}

.social-link:hover {
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
  transform: translateY(-2px);
}

.footer-contact .contact-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  transition: var(--transition);
}

.footer-contact .contact-link:hover {
  color: white;
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-copyright p {
  margin: 0;
}

/* ===== CONTENU MARKDOWN ===== */
.markdown-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  background-color: var(--surface-elevated);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.markdown-content h1 {
  font-size: var(--font-size-3xl);
  color: var(--text-primary);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--primary-color);
}

.markdown-content h1:first-child {
  margin-top: 0;
}

.markdown-content h2 {
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border);
}

.markdown-content h3 {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.markdown-content h4 {
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.markdown-content p {
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
  color: var(--text-secondary);
}

.markdown-content ul,
.markdown-content ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.markdown-content li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
  color: var(--text-secondary);
}

.markdown-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.markdown-content em {
  color: var(--text-primary);
  font-style: italic;
}

.markdown-content blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 4px solid var(--primary-color);
  background-color: var(--surface);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.markdown-content blockquote p {
  margin-bottom: var(--spacing-sm);
  font-style: italic;
  color: var(--text-primary);
}

.markdown-content code {
  background-color: var(--surface);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: var(--font-size-sm);
  color: var(--primary-dark);
}

.markdown-content pre {
  background-color: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  border: 1px solid var(--border);
}

.markdown-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

.markdown-content a {
  color: var(--primary-color);
  text-decoration: underline;
}

.markdown-content a:hover {
  color: var(--primary-dark);
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.markdown-content th,
.markdown-content td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.markdown-content th {
  background-color: var(--surface);
  font-weight: 600;
  color: var(--text-primary);
}

.markdown-content hr {
  border: none;
  height: 1px;
  background-color: var(--border);
  margin: var(--spacing-2xl) 0;
}

/* ===== TAGS ===== */
.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--primary-color);
  color: white;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin: 0 var(--spacing-xs) var(--spacing-xs) 0;
}

.tag:last-child {
  margin-right: 0;
}

.download-count {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.download-count i {
  margin-right: var(--spacing-xs);
}

.document-tags {
  margin-bottom: var(--spacing-md);
}

.document-downloads {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ===== INTERFACE ADMIN MODERNE ===== */
.admin-layout {
  display: flex;
  min-height: 100vh;
  background-color: var(--surface);
}

.admin-sidebar {
  width: 280px;
  background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-light) 100%);
  box-shadow: 4px 0 20px rgba(15, 23, 42, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 1000;
  overflow-y: auto;
  transition: transform 0.3s ease;
}

.admin-sidebar-header {
  padding: var(--spacing-2xl) var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: white;
  text-decoration: none;
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.admin-logo i {
  font-size: var(--font-size-2xl);
  background: linear-gradient(45deg, var(--accent-color), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.admin-nav-menu {
  padding: var(--spacing-xl) 0;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  margin: 0 var(--spacing-md);
  border-radius: var(--radius-lg);
  color: #ffffff;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
  position: relative;
}

.admin-nav-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  transform: translateX(4px);
}

.admin-nav-item.active {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}


.admin-nav-item i {
  font-size: var(--font-size-lg);
  min-width: 20px;
  text-align: center;
}

.admin-sidebar-footer {
  margin-top: auto;
  padding: var(--spacing-xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-sidebar-footer .admin-nav-item {
  opacity: 0.9;
  font-size: var(--font-size-sm);
}

.admin-sidebar-footer .admin-nav-item:hover {
  opacity: 1;
}

.admin-main {
  flex: 1;
  margin-left: 280px;
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

/* Menu hamburger pour mobile */
.admin-mobile-toggle {
  display: none;
  position: fixed;
  top: 15px;
  left: 15px;
  z-index: 1001;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  width: 44px;
  height: 44px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: var(--transition);
}

.admin-mobile-toggle:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.admin-mobile-toggle i {
  font-size: 1.2rem;
}

/* Overlay pour mobile */
.admin-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.admin-overlay.active {
  opacity: 1;
}

/* Admin info card dans la sidebar */
.admin-info-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
}

.info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.info-content {
  flex: 1;
}

.info-title {
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
  margin: 0 0 2px 0;
}

.info-text {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  margin: 0;
}

/* ===== INTERFACE PRIVÉE ÉTUDIANTE ===== */
.private-layout {
  display: flex;
  min-height: 100vh;
  background-color: var(--surface);
}

.private-sidebar {
  width: 280px;
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
  box-shadow: 4px 0 20px rgba(2, 132, 199, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 1000;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.private-sidebar-header {
  padding: var(--spacing-2xl) var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.private-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: white;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.private-logo:hover {
  transform: scale(1.02);
}

.private-logo i {
  font-size: var(--font-size-2xl);
  background: linear-gradient(45deg, var(--accent-color), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--accent-color);
}

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

.logo-title {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: white;
}

.logo-subtitle {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin-top: 2px;
}

.private-nav-menu {
  padding: var(--spacing-xl) 0;
  flex: 1;
}

.private-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  margin: 0 var(--spacing-md);
  border-radius: var(--radius-lg);
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
  position: relative;
  background: none;
  border: none;
  width: calc(100% - 2 * var(--spacing-md));
  text-align: left;
  cursor: pointer;
  font-size: var(--font-size-base);
}

/* ===== TOGGLE MODE SOMBRE ===== */
.theme-toggle {
  background: transparent;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-left: var(--spacing-md);
}

.theme-toggle:hover {
  border-color: var(--secondary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.2);
}

[data-theme="dark"] .theme-toggle:hover {
  box-shadow: 0 4px 12px rgba(96, 165, 250, 0.3);
}

.theme-toggle i {
  font-size: var(--font-size-lg);
  transition: transform 0.3s ease;
}

.theme-toggle:hover i {
  transform: rotate(15deg);
}

/* Responsive */
@media (max-width: 768px) {
  .theme-toggle {
    margin-left: var(--spacing-sm);
    width: 36px;
    height: 36px;
  }
}

.private-nav-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  transform: translateX(4px);
}

.private-nav-item.active {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
  font-weight: 600;
}

.private-nav-item.active::before {
  content: '';
  position: absolute;
  left: -var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: white;
  border-radius: 0 4px 4px 0;
}

.private-nav-item i {
  font-size: var(--font-size-lg);
  min-width: 20px;
  text-align: center;
}

.private-sidebar-footer {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}

.private-info-card {
  margin: 0 var(--spacing-md) var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  backdrop-filter: blur(10px);
}

.info-icon {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  font-size: var(--font-size-lg);
}

.info-content {
  flex: 1;
}

.info-title {
  font-weight: 600;
  color: white;
  font-size: var(--font-size-sm);
  margin-bottom: 2px;
}

.info-text {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

.private-logout {
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.private-logout:hover {
  color: #fca5a5;
  background-color: rgba(255, 255, 255, 0.15);
}

.admin-logout {
  color: #ffffff !important;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.admin-logout:hover {
  color: #fca5a5 !important;
  background-color: rgba(255, 255, 255, 0.15);
}

/* Style spécifique pour le bouton de déconnexion admin */
button.admin-nav-item.admin-logout {
  color: #ffffff !important;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}

button.admin-nav-item.admin-logout:hover {
  color: #fca5a5 !important;
}

.private-main {
  flex: 1;
  margin-left: 280px;
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

.private-header {
  background: white;
  border-bottom: 1px solid var(--border-light);
  padding: var(--spacing-xl) var(--spacing-2xl);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.private-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.private-nav h1 {
  margin: 0;
  font-size: var(--font-size-2xl);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-primary);
}

.private-nav h1 i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.private-actions .btn {
  margin-left: var(--spacing-sm);
}

.private-content {
  padding: var(--spacing-2xl);
  min-height: calc(100vh - 120px);
}

/* Centrage simple et efficace pour les états vides */
.private-content .empty-state {
  margin: 4rem auto;
  max-width: 600px;
}

.admin-content {
  padding: var(--spacing-2xl);
  min-height: calc(100vh - 120px);
}

.admin-content .empty-state {
  margin: 4rem auto;
  max-width: 600px;
}

/* ===== OPTIMISATIONS ADMIN ===== */

/* Formulaires admin */
.admin-form-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* Actions de formulaire */
.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-start;
  align-items: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

/* Upload de fichiers */
.file-upload-area {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  background: var(--surface-hover);
  cursor: pointer;
  transition: all 0.3s ease;
}

.file-upload-area:hover {
  border-color: var(--primary-color);
  background: var(--primary-light);
}

.file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.file-upload-content {
  pointer-events: none;
}

.file-upload-content i {
  font-size: 2rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

/* Statistiques dashboard */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.stat-card {
  background: var(--surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  text-align: center;
  transition: transform 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-icon {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.stat-content h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.stat-content p {
  color: var(--text-muted);
  margin: var(--spacing-xs) 0 0 0;
  font-size: 0.875rem;
}

/* Actions rapides */
.action-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Sections admin */
.admin-section {
  margin-bottom: var(--spacing-3xl);
}

.admin-section h2 {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border);
}

/* Amélioration des tableaux */
.documents-table-container {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow-x: auto;
}

.documents-table {
  width: 100%;
  border-collapse: collapse;
}

.documents-table th,
.documents-table td {
  text-align: left;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.documents-table td {
  color: var(--text-primary);
}

.documents-table th {
  background: var(--surface-hover);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.documents-table tr:hover {
  background: var(--surface-hover);
}

.document-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.document-title i {
  color: var(--primary-color);
}

.document-description {
  display: block;
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--primary-color);
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

/* Boutons dans les tableaux */
.action-buttons {
  display: flex;
  gap: var(--spacing-xs);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  min-width: auto;
}

.btn-error {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  color: white;
}

.btn-error:hover {
  background: linear-gradient(135deg, #b91c1c, #991b1b);
}

/* ===== CAHIER DE TEXTE - AFFICHAGE PAR MOIS ===== */

.seances-by-month {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.month-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.month-header {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  padding: var(--spacing-lg) var(--spacing-xl);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease;
}

.month-header:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.month-header h3 {
  margin: 0;
  color: white;
  font-weight: 600;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.month-toggle {
  transition: transform 0.3s ease;
  font-size: 1rem;
}

.seance-count {
  font-weight: 400;
  font-size: 0.875rem;
  opacity: 0.8;
  margin-left: auto;
}

.month-content {
  transition: max-height 0.3s ease, padding 0.3s ease;
  overflow: hidden;
}

.month-content.expanded {
  max-height: 5000px;
  padding: var(--spacing-lg);
}

.month-content.collapsed {
  max-height: 0;
  padding: 0 var(--spacing-lg);
}

.month-content .seance-card {
  margin-bottom: var(--spacing-lg);
}

.month-content .seance-card:last-child {
  margin-bottom: 0;
}

/* Amélioration des actions de séances */
.seance-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-light);
  margin-top: var(--spacing-md);
}

.seance-meta {
  flex: 1;
}

.filter-container {
  margin-bottom: var(--spacing-lg);
}

.filter-form {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Amélioration du markdown dans les séances */
.seance-text h1, .seance-text h2, .seance-text h3,
.travail-text h1, .travail-text h2, .travail-text h3 {
  color: var(--text-primary);
  margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.seance-text h1, .travail-text h1 {
  font-size: 1.25rem;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: var(--spacing-xs);
}

.seance-text h2, .travail-text h2 {
  font-size: 1.125rem;
}

.seance-text h3, .travail-text h3 {
  font-size: 1rem;
}

.seance-text ul, .seance-text ol,
.travail-text ul, .travail-text ol {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
}

.seance-text li, .travail-text li {
  margin-bottom: var(--spacing-xs);
}

.seance-text code, .travail-text code {
  background: var(--surface-hover);
  padding: 2px 4px;
  border-radius: 3px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.875rem;
}

.seance-text pre, .travail-text pre {
  background: var(--surface-hover);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

.seance-text pre code, .travail-text pre code {
  background: none;
  padding: 0;
}

.seance-text strong, .travail-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.seance-text em, .travail-text em {
  color: var(--primary-color);
  font-style: italic;
}

.seance-text blockquote, .travail-text blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: var(--spacing-md);
  margin: var(--spacing-md) 0;
  color: var(--text-muted);
  background: var(--surface-hover);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ===== OPTIMISATIONS INTERFACE ÉTUDIANTE ===== */

/* Header privée */
.private-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-lg) var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.private-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.private-nav h1 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 600;
}

.private-nav h1 i {
  color: var(--primary-color);
}

/* Alertes info */
.private-info {
  margin-bottom: var(--spacing-2xl);
}

.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.alert i {
  margin-top: 2px;
  font-size: 1.1rem;
}

.alert-info {
  background: rgba(59, 130, 246, 0.15);
  border-left-color: #3b82f6;
  color: #1e40af;
}

.alert-success {
  background: rgba(34, 197, 94, 0.15);
  border-left-color: #22c55e;
  color: #15803d;
}

.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border-left-color: #ef4444;
  color: #dc2626;
}

/* Sections de documents */
.documents-section {
  margin-bottom: var(--spacing-3xl);
}

.documents-section h2 {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Grid de documents */
.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .documents-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* Cartes de documents */
.document-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.document-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.document-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.document-card.private-card {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  height: auto;
}

.document-card.private-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

/* Icône du document */
.document-icon {
  position: relative;
  margin-bottom: var(--spacing-md);
  flex-shrink: 0;
}

.document-icon i {
  font-size: 2.5rem;
  color: var(--primary-color);
}

/* Icône pour les cartes privées (plus petite) */
.document-card.private-card .document-icon {
  margin-bottom: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.document-card.private-card .document-icon i {
  font-size: 1.5rem;
}

/* Contenu pour les cartes privées */
.document-card.private-card .document-content {
  margin-bottom: 0;
}

.document-card.private-card .document-content h3 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.document-card.private-card .document-chapter {
  font-size: 0.75rem;
  margin-bottom: var(--spacing-xs);
}

.document-card.private-card .document-description {
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
  line-height: 1.4;
}

.document-card.private-card .document-meta {
  font-size: 0.675rem;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xs);
}

.document-card.private-card .document-tags {
  margin: var(--spacing-xs) 0;
}

.document-card.private-card .tag {
  font-size: 0.625rem;
  padding: 0.125rem 0.375rem;
}

/* Groupes de types de documents */
.document-type-group {
  margin-bottom: var(--spacing-2xl);
}

.type-header {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: var(--spacing-md);
}

.type-header:hover {
  background: var(--surface-hover);
  border-color: var(--primary-color);
}

.type-header h3 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-primary);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.type-toggle {
  transition: transform 0.3s ease;
  color: var(--primary-color);
}

.document-count {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: var(--font-size-sm);
}

.type-content {
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
}

.type-content.collapsed {
  max-height: 0;
  opacity: 0;
}

.type-content.expanded {
  max-height: 2000px;
  opacity: 1;
}

.type-content.collapsed .type-toggle {
  transform: rotate(-90deg);
}

.type-content.expanded .type-toggle {
  transform: rotate(0deg);
}

.private-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--primary-color);
  color: white;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Contenu du document */
.document-content {
  flex: 1;
  margin-bottom: var(--spacing-md);
}

.document-content h3 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-sm) 0;
  line-height: 1.3;
}

.document-chapter {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  margin: 0 0 var(--spacing-xs) 0;
}

.document-description {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.4;
  margin: 0 0 var(--spacing-sm) 0;
}

/* Tags */
.document-tags {
  margin: var(--spacing-sm) 0;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--surface-elevated);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  margin-right: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  border: 1px solid var(--border);
}

/* Métadonnées du document */
.document-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: auto;
}

.document-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.document-meta i {
  font-size: 0.875rem;
}

/* Actions du document */
.document-actions {
  margin-top: var(--spacing-md);
  display: flex;
  justify-content: center;
}

.download-btn {
  width: 100%;
  justify-content: center;
  transition: all 0.3s ease;
}

.download-btn.loading {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Cahier de texte */
.cahier-section h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xl);
}

.seances-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.seance-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: box-shadow 0.3s ease;
}

.seance-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.seance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border);
}

.seance-date {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  font-weight: 600;
}

.seance-date i {
  color: var(--primary-color);
}

.seance-content h3 {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-sm) 0;
}

.seance-text {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.travail-maison {
  background: var(--surface-hover);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary-color);
  margin-top: var(--spacing-md);
}

.travail-maison h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-sm) 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.travail-maison h4 i {
  color: var(--primary-color);
}

.travail-text {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
  .private-header {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
  }
  
  .private-nav h1 {
    font-size: 1.25rem;
  }
  
  .seance-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
}

/* Mode sombre pour la partie privée */
[data-theme="dark"] .private-header {
  background: var(--surface-elevated);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .private-nav h1 {
  color: var(--text-primary);
}

[data-theme="dark"] .private-sidebar {
  background: var(--surface-elevated);
  border-right-color: var(--border);
}

[data-theme="dark"] .private-sidebar-header {
  background: var(--surface);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .private-logo {
  color: var(--text-primary);
}

[data-theme="dark"] .private-nav-item {
  color: var(--text-secondary);
}

[data-theme="dark"] .private-nav-item:hover {
  background: var(--surface);
  color: var(--text-primary);
}

[data-theme="dark"] .private-nav-item.active {
  background: var(--primary-color);
  color: white;
}

[data-theme="dark"] .private-info-card {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .private-logout {
  color: var(--text-secondary);
}

[data-theme="dark"] .private-logout:hover {
  background: var(--surface);
  color: var(--error);
}

.admin-header {
  background: white;
  border-bottom: 1px solid var(--border-light);
  padding: var(--spacing-xl) var(--spacing-2xl);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.admin-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.admin-nav h1 {
  margin: 0;
  font-size: var(--font-size-2xl);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-primary);
}

.admin-nav h1 i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
  margin-right: var(--spacing-md);
}

.admin-actions .btn {
  margin-left: var(--spacing-sm);
}

.admin-content {
  padding: var(--spacing-2xl);
  min-height: calc(100vh - 120px);
}


/* Stats Cards */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.stat-card {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.stat-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-size: var(--font-size-2xl);
  color: white;
}

.stat-icon.documents {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.stat-icon.pages {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.stat-icon.downloads {
  background: linear-gradient(135deg, #10b981, #059669);
}

.stat-icon.users {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

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

/* Tables */
.documents-table {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.documents-table table {
  width: 100%;
  border-collapse: collapse;
}

.documents-table th {
  background: var(--surface);
  padding: var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border);
}

.documents-table td {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.documents-table tr:last-child td {
  border-bottom: none;
}

.documents-table tr:hover {
  background: var(--surface);
}

/* Mode sombre pour les tableaux */
[data-theme="dark"] .documents-table {
  background: var(--surface-elevated);
  border-color: var(--border);
}

[data-theme="dark"] .documents-table th {
  background: var(--surface);
  color: var(--text-primary);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .documents-table td {
  color: var(--text-primary);
  border-bottom-color: var(--border-light);
}

[data-theme="dark"] .documents-table tr:hover {
  background: var(--surface);
}

.table-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.btn-sm {
  padding: var(--spacing-sm);
  font-size: var(--font-size-sm);
  min-width: auto;
}

.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-pcsi {
  background: rgba(59, 130, 246, 0.1);
  color: #2563eb;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.badge-ecg {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-ats {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-ece {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Mode sombre pour les badges et tags */
[data-theme="dark"] .tag {
  background-color: var(--secondary-color);
  color: white;
  border: 1px solid var(--secondary-light);
}

[data-theme="dark"] .badge {
  background: var(--secondary-color);
  color: #ffffff;
}

[data-theme="dark"] .badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.4);
}

[data-theme="dark"] .badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.4);
}

[data-theme="dark"] .badge-pcsi {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .badge-ecg {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.4);
}

[data-theme="dark"] .badge-ats {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.4);
}

[data-theme="dark"] .badge-ece {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.4);
}

[data-theme="dark"] .badge-secondary {
  background: rgba(100, 116, 139, 0.2);
  color: #94a3b8;
  border-color: rgba(100, 116, 139, 0.4);
}

/* Mode sombre pour la partie admin */
[data-theme="dark"] .admin-header {
  background: var(--surface-elevated);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .admin-nav h1 {
  color: var(--text-primary);
}

[data-theme="dark"] .admin-sidebar {
  background: var(--surface-elevated);
  border-right-color: var(--border);
}

[data-theme="dark"] .admin-sidebar-header {
  background: var(--surface);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .admin-nav-item {
  color: var(--text-primary);
}

[data-theme="dark"] .admin-nav-item:hover {
  background: var(--surface);
  color: var(--text-primary);
}

[data-theme="dark"] .admin-nav-item.active {
  background: var(--primary-color);
  color: white;
}

/* Mode sombre pour les tableaux markdown */
[data-theme="dark"] .markdown-content table {
  background-color: var(--surface-elevated);
}

[data-theme="dark"] .markdown-content th {
  background-color: var(--surface);
  color: var(--text-primary);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .markdown-content td {
  color: var(--text-primary);
  border-bottom-color: var(--border);
}

/* Mode sombre pour les boutons */
[data-theme="dark"] .btn-outline {
  border-color: var(--border);
  background-color: var(--surface-elevated);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-outline:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
  border-color: var(--secondary-color);
}

[data-theme="dark"] .btn-secondary {
  background: var(--surface-elevated);
  color: var(--text-primary);
  border: 2px solid var(--border);
  font-weight: 500;
}

[data-theme="dark"] .btn-secondary:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
}

[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
  background: linear-gradient(135deg, var(--secondary-light), var(--accent-color));
  color: white;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 30px rgba(2, 132, 199, 0.4);
}

/* Mode sombre pour le logo */
[data-theme="dark"] .nav-brand a {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

[data-theme="dark"] .nav-brand a:hover {
  color: white;
  box-shadow: 0 8px 25px rgba(2, 132, 199, 0.4);
}

/* Mode sombre pour les liens de navigation */
[data-theme="dark"] .nav-link {
  color: var(--text-primary);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.2), rgba(245, 158, 11, 0.2));
  color: var(--secondary-color);
  border-color: var(--secondary-color);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

[data-theme="dark"] .nav-link[href="/recherche"]:hover::after,
[data-theme="dark"] .nav-link[href="/prive"]:hover::after,
[data-theme="dark"] .nav-link[href="/admin"]:hover::after {
  background-color: var(--surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

/* Navigation mobile en mode sombre */
[data-theme="dark"] .nav-menu {
  border-color: var(--border);
}

[data-theme="dark"] .nav-toggle {
  color: var(--text-primary);
}

[data-theme="dark"] .nav-toggle:hover {
  background: var(--surface);
}

/* Headers de page en mode sombre */
[data-theme="dark"] .page-header {
  background-color: var(--surface);
}

[data-theme="dark"] .hero-section {
  background: var(--background);
}

/* S'assurer que tous les textes sont visibles */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: var(--text-primary);
}

[data-theme="dark"] p {
  color: var(--text-secondary);
}

/* Cahier de texte en mode sombre */
[data-theme="dark"] .month-header h3 {
  color: var(--text-primary) !important;
}

/* Icônes cadenas en mode sombre */
[data-theme="dark"] .fa-lock {
  color: var(--text-secondary) !important;
}

/* Alertes en mode sombre */
[data-theme="dark"] .alert-info {
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
}

[data-theme="dark"] .alert-success {
  background: rgba(34, 197, 94, 0.2);
  color: #86efac;
}

[data-theme="dark"] .alert-error {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

/* Forms */
.admin-form-container {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
}

.admin-form {
  max-width: 600px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.checkbox-wrapper input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

/* Amélioration des champs de formulaire admin */
.admin-form .form-control {
  border: 2px solid var(--border);
  transition: all 0.2s ease;
  font-size: var(--font-size-base);
}

.admin-form .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.admin-form .form-group label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.admin-form small {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: block;
}

/* Boutons améliorés */
.admin-actions .btn {
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Messages de succès/erreur */
.alert {
  border-radius: var(--radius-lg);
  font-weight: 500;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--error);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--success);
}

/* Responsive Admin */
@media (max-width: 768px) {
  .admin-nav {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .admin-menu {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .admin-stats {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .table-actions {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 64px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 64px);
    background-color: var(--surface-elevated);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transition: var(--transition);
    border-top: 1px solid var(--border);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .search-input-group {
    flex-direction: column;
  }
  
  .documents-grid {
    grid-template-columns: 1fr;
  }
  
  .document-card {
    flex-direction: column;
    text-align: center;
  }
  
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-profile {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .profile-photo {
    width: 120px;
    height: 120px;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .news-banner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .news-content {
    text-align: center;
  }
}

/* ===== CAHIER DE TEXTE ===== */
.cahier-section {
  margin-top: var(--spacing-2xl);
}

.seances-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.seance-card {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.seance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-light);
}

.seance-date {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-primary);
  text-transform: capitalize;
}

.seance-type {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
}

.seance-type-cours {
  background-color: #dbeafe;
  color: #1e40af;
}

.seance-type-td {
  background-color: #dcfce7;
  color: #166534;
}

.seance-type-tp {
  background-color: #fef3c7;
  color: #b45309;
}

.seance-type-devoir {
  background-color: #fce7f3;
  color: #be185d;
}

.seance-content {
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.seance-content h1,
.seance-content h2,
.seance-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.seance-content h1:first-child,
.seance-content h2:first-child,
.seance-content h3:first-child {
  margin-top: 0;
}

.seance-content ul,
.seance-content ol {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
}

.seance-content li {
  margin-bottom: var(--spacing-xs);
}

.seance-meta {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-light);
}

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

/* Responsive pour cahier de texte */
@media (max-width: 768px) {
  .seance-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .seance-date {
    font-size: var(--font-size-sm);
  }
}

/* ===== RESPONSIVE MOBILE ADMIN/PRIVÉ ===== */
@media (max-width: 768px) {
  .admin-mobile-toggle {
    display: block;
  }
  
  .admin-overlay {
    display: block;
  }
  
  .admin-sidebar {
    transform: translateX(-100%);
  }
  
  .admin-sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .admin-main {
    margin-left: 0 !important;
    padding-top: 70px;
    width: 100%;
  }
  
  .private-layout .admin-sidebar {
    transform: translateX(-100%);
  }
  
  .private-layout .admin-sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .private-layout .admin-main,
  .private-main {
    margin-left: 0 !important;
    padding-top: 70px;
    width: 100%;
  }
  
  .admin-sidebar-header {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .admin-nav-item {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
  
  .admin-nav-item i {
    font-size: 1.1rem;
  }
}

/* ===== RESPONSIVE TYPOGRAPHIE ===== */
@media (max-width: 768px) {
  /* Échelle typographique mobile optimisée */
  h1 {
    font-size: var(--font-size-3xl);
    line-height: var(--line-height-snug);
    margin-bottom: 0.75rem;
  }
  
  h2 {
    font-size: var(--font-size-2xl);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
  }
  
  h3 {
    font-size: var(--font-size-xl);
    margin-top: 1.5rem;
  }
  
  h4 {
    font-size: var(--font-size-lg);
  }
  
  h5, h6 {
    font-size: var(--font-size-base);
  }
  
  p {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    max-width: none; /* Pleine largeur sur mobile */
  }
  
  .lead {
    font-size: var(--font-size-base);
    max-width: none;
  }
  
  /* Espacement réduit sur mobile */
  h2 {
    margin-top: 1.5rem;
  }
  
  h3 {
    margin-top: 1.25rem;
  }
}

/* ===== INDICATEURS DE PROGRESSION ===== */
.progress-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: rgba(0, 0, 0, 0.1);
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.progress-container.visible {
  opacity: 1;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
  width: 0%;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px rgba(var(--secondary-color), 0.5);
}

.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

.loading-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  background-color: currentColor;
  border-radius: 50%;
  animation: loading-dots 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0s; }

.upload-progress {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--surface-elevated);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
}

.upload-progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--surface);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.upload-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
  width: 0%;
  transition: width 0.3s ease;
  animation: shimmer 2s infinite;
  background-size: 200% 100%;
}

.upload-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.download-progress {
  position: relative;
  overflow: hidden;
}

.download-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 2s infinite;
}

/* ===== SKELETON SCREENS ===== */
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface-hover) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-lg);
}

.skeleton-document-card {
  background: var(--surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-lg);
  animation: slideInUp 0.6s ease-out;
}

.skeleton-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  flex-shrink: 0;
}

.skeleton-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.skeleton-title {
  height: 24px;
  width: 70%;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

.skeleton-text {
  height: 16px;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

.skeleton-text.short {
  width: 40%;
}

.skeleton-text.medium {
  width: 60%;
}

.skeleton-text.long {
  width: 80%;
}

.skeleton-meta {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-sm);
}

.skeleton-meta-item {
  height: 14px;
  width: 80px;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-button {
  width: 120px;
  height: 40px;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-xl);
  align-self: center;
}

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Mode sombre pour skeleton */
[data-theme="dark"] .skeleton-icon,
[data-theme="dark"] .skeleton-title,
[data-theme="dark"] .skeleton-text,
[data-theme="dark"] .skeleton-meta-item,
[data-theme="dark"] .skeleton-button {
  background: linear-gradient(90deg, #334155 25%, #475569 50%, #334155 75%);
  background-size: 200% 100%;
}

/* Animations d'apparition échelonnées */
.skeleton-document-card:nth-child(1) { animation-delay: 0.1s; }
.skeleton-document-card:nth-child(2) { animation-delay: 0.2s; }
.skeleton-document-card:nth-child(3) { animation-delay: 0.3s; }
.skeleton-document-card:nth-child(4) { animation-delay: 0.4s; }
.skeleton-document-card:nth-child(5) { animation-delay: 0.5s; }
.skeleton-document-card:nth-child(6) { animation-delay: 0.6s; }