:root {
  --primary-color: #2E8B57;
  --primary-light: #e8f5e8;
  --secondary-color: #228B22;
  --accent-color: #FFD700;
  --text-color: #191919;
  --text-light: #666666;
  --background-color: #f8f9fa;
  --card-bg: #ffffff;
  --card-background: #ffffff;
  --border-color: #e0e0e0;
  --success-color: #228B22;
  --danger-color: #e11d48;
  --warning-color: #f59e0b;
  --info-color: #0891b2;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --transition: all 0.3s ease;
  
  /* Variables pour le mode sombre */
  --dark-bg: #1a1a1a;
  --dark-card-bg: #2d2d2d;
  --dark-text: #ffffff;
  --dark-text-light: #b0b0b0;
  --dark-border: #404040;
}

/* Base styles */
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--light-bg-primary);
  color: var(--light-text-primary);
  line-height: 1.6;
  padding-top: 75px; /* Espacement optimisé pour la navbar */
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Thème sombre activé par JavaScript */
body.dark-mode {
  background-color: var(--dark-bg-primary) !important;
  color: var(--dark-text-primary) !important;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--light-text-primary);
}

body.dark-mode h1, 
body.dark-mode h2, 
body.dark-mode h3, 
body.dark-mode h4, 
body.dark-mode h5, 
body.dark-mode h6 {
  color: var(--dark-text-primary) !important;
}

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

a:hover {
  color: var(--secondary-color);
}

/* Navbar optimisée et professionnelle */
.navbar {
  background: linear-gradient(135deg, #2E8B57, #228B22) !important;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0;
  backdrop-filter: blur(10px);
  min-height: 65px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: white !important;
  transition: var(--transition);
  padding: 0.5rem 0;
}

.navbar-brand:hover {
  transform: scale(1.02);
  color: var(--accent-color) !important;
}

.brand-logo i {
  font-size: 1.3rem;
  color: var(--accent-color) !important;
  margin-right: 0.5rem;
}

.brand-name {
  font-size: 1.2rem;
  letter-spacing: -0.3px;
  font-weight: 700;
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 500;
  padding: 0.3rem 1rem !important;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
  font-size: 0.80rem;
  margin: 0 0.2rem;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: white !important;
  background-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--accent-color);
  border-radius: 1px;
}

.navbar-toggler {
  border: none !important;
  padding: 0.25rem 0.5rem;
  font-size: 1.1rem;
}

.navbar-toggler:focus {
  box-shadow: none !important;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Barre de recherche optimisée */
.search-form {
  max-width: 280px;
  width: 100%;
}

.search-form .form-control {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  border: none;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  background-color: rgba(255, 255, 255, 0.95);
}

.search-form .btn {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  border: none;
  padding: 0.5rem 0.75rem;
  background-color: rgba(255, 255, 255, 0.95);
  color: var(--primary-color);
}

.search-form .btn:hover {
  background-color: white;
  color: var(--secondary-color);
}

/* Dropdown amélioré */
.dropdown-menu {
  border: none;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-md);
  padding: 0.5rem 0;
  margin-top: 0.5rem;
  min-width: 220px;
}

.dropdown-item {
  padding: 0.75rem 1.25rem;
  transition: var(--transition);
  border: none;
  background: none;
  font-size: 0.9rem;
}

.dropdown-item:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
  transform: translateX(3px);
}

.dropdown-header {
  padding: 1rem 1.25rem 0.5rem;
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.85rem;
}

/* Notifications badge */
.navbar .badge {
  font-size: 0.65rem !important;
  padding: 0.2rem 0.4rem !important;
  position: absolute;
  top: -5px !important;
  right: -8px !important;
}

/* Boutons */
.btn {
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  border: none;
  font-size: 0.9rem;
  touch-action: manipulation; /* Améliorer la réactivité tactile */
  -webkit-tap-highlight-color: rgba(0,0,0,0.1);
}

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

.btn-primary:hover {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(46, 139, 87, 0.3);
}

/* Améliorer la réactivité sur mobile */
@media (max-width: 767.98px) {
  .btn {
    min-height: 44px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
  
  /* Empêcher le double-tap zoom sur les boutons */
  .btn:active {
    transform: scale(0.98);
  }
  
  /* Améliorer les zones de clic */
  .like-button,
  .comment-button,
  .toggle-comments {
    min-height: 48px;
    min-width: 48px;
    padding: 0.75rem;
  }
}

/* Désactiver les animations sur les appareils tactiles pour améliorer les performances */
@media (hover: none) and (pointer: coarse) {
  .btn:hover {
    transform: none;
    box-shadow: inherit;
  }
  
  .card:hover {
    transform: none;
    box-shadow: inherit;
  }
}

.btn-warning {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #000;
  font-weight: 700;
}

.btn-warning:hover {
  background-color: #e6c200;
  border-color: #e6c200;
  color: #000;
  transform: translateY(-1px);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.5);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
}

.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: white;
  color: white;
}

/* Cards */
.card {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
  background-color: var(--card-bg);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

/* Messages d'alerte personnalisés */
.alert-container {
  position: fixed;
  top: 85px;
  right: 20px;
  z-index: 1050;
  max-width: 400px;
}

.custom-alert {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  margin-bottom: 1rem;
  border-left: 4px solid;
}

.alert-success {
  background-color: #d1e7dd;
  color: #0a3622;
  border-left-color: var(--success-color);
}

.alert-danger {
  background-color: #f8d7da;
  color: #58151c;
  border-left-color: var(--danger-color);
}

.alert-warning {
  background-color: #fff3cd;
  color: #664d03;
  border-left-color: var(--warning-color);
}

.alert-info {
  background-color: #cff4fc;
  color: #055160;
  border-left-color: var(--info-color);
}

/* Main content */
.main-content {
  min-height: calc(100vh - 200px);
  padding-bottom: 2rem;
}

/* Footer amélioré */
.footer {
  background: linear-gradient(135deg, #1a1a1a, #2d2d2d) !important;
  margin-top: auto;
  color: white !important;
}

.footer-title {
  color: white !important;
  font-weight: 700;
}

.footer-subtitle {
  color: var(--accent-color) !important;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
}

.footer a {
  color: rgba(255, 255, 255, 0.8) !important;
  transition: var(--transition);
}

.footer a:hover {
  color: white !important;
  text-decoration: underline;
}

.text-light-emphasis {
  color: rgba(255, 255, 255, 0.8) !important;
}

.text-light-emphasis:hover {
  color: white !important;
}

/* Modals personnalisés */
.modal-content {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.modal-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-bottom: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header .btn-close {
  filter: invert(1);
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  padding: 1rem 2rem;
}

/* Filtres améliorés */
.filter-card {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: none;
}

.filter-group {
  border-bottom: 1px solid var(--border-color);
}

.filter-group:last-child {
  border-bottom: none;
}

.filter-group-header {
  padding: 1rem 1.5rem 0.5rem;
  background-color: var(--background-color);
}

.filter-group-header h5 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
}

.filter-group-body {
  padding: 0;
}

.filter-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.filter-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.filter-item:last-child {
  border-bottom: none;
}

.filter-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
  color: var(--light-text-primary);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.9rem;
}

.filter-link:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
  transform: translateX(3px);
}

.filter-item.active .filter-link {
  background-color: var(--primary-color);
  color: white;
  font-weight: 600;
}

.filter-count {
  background-color: var(--border-color);
  color: var(--primary-color);
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.filter-item.active .filter-count {
  background-color: rgb(255, 255, 255);
  color:  var(--primary-color);
}

/* Articles cards améliorés */
.article-card {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: none;
  transition: var(--transition);
  overflow: hidden;
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.article-image img {
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.article-image:hover img {
  transform: scale(1.02);
}

/* Mode sombre pour les cartes */
body.dark-mode .sidebar-container,
body.dark-mode .create-post-card,
body.dark-mode .article-card,
body.dark-mode .no-articles {
    background-color: var(--dark-card-bg) !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2) !important;
}

/* Corrections pour le formulaire d'article en mode clair */
.form-control {
    background-color: var(--light-bg-primary) !important;
    color: var(--light-text-primary) !important;
    border: 1px solid var(--border-color) !important;
}

.form-control:focus {
    background-color: var(--light-bg-primary) !important;
    color: var(--light-text-primary) !important;
    border-color: var(--primary-color) !important;
}

.form-label {
    color: var(--light-text-primary) !important;
    font-weight: 600;
}

/* Mode sombre pour les formulaires */
body.dark-mode .form-control {
    background-color: var(--dark-bg-tertiary) !important;
    color: var(--dark-text-primary) !important;
    border: 1px solid var(--dark-border) !important;
}

body.dark-mode .form-control:focus {
    background-color: var(--dark-bg-tertiary) !important;
    color: var(--dark-text-primary) !important;
    border-color: var(--primary-color) !important;
}

body.dark-mode .form-label {
    color: var(--dark-text-primary) !important;
}

/* Mode clair pour les cartes */
.sidebar-container,
.create-post-card,
.article-card,
.no-articles {
    background-color: var(--card-background) !important;
}

/* Bouton retour en haut */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 6rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2E8B57, #228B22);
  border: none;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(46, 139, 87, 0.3);
  transition: all 0.3s ease;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(46, 139, 87, 0.4);
  background: linear-gradient(135deg, #228B22, #2E8B57);
}

body.dark-mode .back-to-top {
  background: linear-gradient(135deg, #2E8B57, #228B22);
  box-shadow: 0 5px 15px rgba(46, 139, 87, 0.4);
}

body.dark-mode .back-to-top:hover {
  background: linear-gradient(135deg, #228B22, #2E8B57);
  box-shadow: 0 8px 25px rgba(46, 139, 87, 0.5);
}

/* Responsive amélioré */
@media (max-width: 991.98px) {
  body {
    padding-top: 70px;
  }
  
  .navbar {
    padding: 0.4rem 0;
  }
  
  .navbar-nav {
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 0.5rem;
  }
  
  .navbar-nav .nav-link {
    padding: 0.75rem 1rem !important;
    margin: 0.1rem 0;
    border-radius: var(--radius-sm);
  }
  
  .search-form {
    max-width: 100%;
    margin: 1rem 0;
  }
  
  .alert-container {
    right: 10px;
    left: 10px;
    max-width: none;
    top: 80px;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
  
  .dark-mode-toggle {
    bottom: 1rem;
    left: 1rem;
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
}

@media (max-width: 767.98px) {
  .card-body {
    padding: 1.25rem;
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
  
  .filter-card {
    position: static !important;
  }
}

@media (max-width: 575.98px) {
  .navbar-brand {
    font-size: 1.2rem;
  }
  
  .brand-logo i {
    font-size: 1.4rem;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

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

.slide-up {
  animation: slideUp 0.5s ease-in-out;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.pulse {
  animation: pulse 0.5s ease-in-out;
}

/* Utilitaires */
.text-purple {
  color: #6f42c1 !important;
}

.bg-gradient-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
}

.shadow-custom {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
}

/* Améliorations pour l'accessibilité */
.btn:focus,
.form-control:focus,
.nav-link:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Loading states */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner-border-sm {
  width: 1rem;
  height: 1rem;
}

/* Styles pour les badges de catégories */
.badge {
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
}

.badge.bg-primary {
  background-color: var(--primary-color) !important;
}

/* Améliorations pour les stats */
.article-stats {
  display: flex;
  gap: 1rem;
  color: var(--text-light);
  font-size: 0.875rem;
  align-items: center;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: var(--transition);
}

.stat-item:hover {
  color: var(--primary-color);
}

/* Styles pour les actions d'articles */
.article-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.like-button {
  transition: var(--transition);
}

.like-button.liked {
  background-color: var(--danger-color) !important;
  border-color: var(--danger-color) !important;
  color: white !important;
}

.like-button:hover {
  transform: scale(1.05);
}