/* =================================================================
   SYSTÈME DE GESTION RH - STYLE COMPLET MODERNISÉ
   Fichier: assets/css/main.css
   ================================================================= */

/* ==================== VARIABLES CSS ==================== */
:root {
    /* Couleurs principales */
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --primary-light: #7c8ff0;
    --secondary-color: #764ba2;
    
    /* Couleurs d'état */
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    
    /* Couleurs neutres */
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #ced4da;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    --gray-900: #0f172a;
    
    /* Arrière-plans */
    --bg-gradient-start: #1e3c72;
    --bg-gradient-end: #2a5298;
    --card-bg: rgba(255, 255, 255, 0.95);
    
    /* Texte */
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-muted: #95a5a6;
    
    /* Bordures et ombres */
    --border-radius: 12px;
    --border-radius-lg: 15px;
    --border-color: rgba(236, 240, 241, 0.5);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ==================== SCROLLBAR PERSONNALISÉE ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: all var(--transition-base);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* ==================== LAYOUT PRINCIPAL ==================== */
.admin-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    width: 280px;
    background: rgba(30, 60, 114, 0.95);
    backdrop-filter: blur(20px);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    overflow-y: auto;
}

/* Effet de particules animées */
.sidebar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    animation: particles 15s ease-in-out infinite;
    pointer-events: none;
}

@keyframes particles {
    0%, 100% { transform: translateY(0) rotate(0deg); opacity: 1; }
    33% { transform: translateY(-10px) rotate(120deg); opacity: 0.8; }
    66% { transform: translateY(10px) rotate(240deg); opacity: 0.6; }
}

/* Header de la sidebar */
.sidebar-header {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.sidebar-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Logo principal */
.sidebar-header .logo {
    width: 160px;
    height: 80px;
    border-radius: 20px;
    margin: 0 auto 20px;
    padding: 8px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.92));
    border: 3px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 15px 45px rgba(102, 126, 234, 0.35);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    object-fit: contain;
    display: block;
    position: relative;
    overflow: hidden;
}

.sidebar-header .logo:hover {
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 25px 60px rgba(102, 126, 234, 0.45);
    border-color: rgba(255, 255, 255, 0.7);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff, #e8f4fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Info utilisateur */
.user-info {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    margin: 8px;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.user-info:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.06));
    transform: translateX(3px);
}

.avatar-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.user-info:hover .avatar-placeholder {
    transform: scale(1.05) rotate(3deg);
}

.user-details .username {
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    font-size: 14px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.user-details .role {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
}

/* Menu de navigation */
.nav-menu {
    list-style: none;
    padding: 10px 8px;
    margin: 0;
    flex: 1;
}

.nav-menu li {
    margin-bottom: 3px;
}

.menu-section {
    margin-top: 15px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.menu-section-title {
    color: rgba(255, 255, 255, 0.6);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 6px 16px;
    margin-bottom: 6px;
    font-weight: 600;
}

.nav-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all var(--transition-base);
    border-radius: 10px;
    font-weight: 500;
    font-size: 14px;
    position: relative;
    overflow: hidden;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-base);
    border-radius: 0 5px 5px 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.08));
    color: #ffffff;
    transform: translateX(6px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 3px;
}

.nav-menu i {
    width: 18px;
    text-align: center;
    font-size: 14px;
    transition: all var(--transition-base);
}

.nav-menu a:hover i,
.nav-menu a.active i {
    transform: scale(1.1);
    color: var(--primary-color);
}

/* ==================== CONTENU PRINCIPAL ==================== */
.main-content {
    flex: 1;
    margin-left: 280px;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Barre supérieure */
.top-bar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 18px 30px;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.top-bar h1 {
    margin: 0;
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.admin-indicator {
    background: linear-gradient(135deg, var(--danger), #c0392b);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: var(--shadow-sm);
    animation: adminPulse 2s ease-in-out infinite;
}

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

.datetime {
    color: var(--text-secondary);
    font-size: 13px;
    background: rgba(255, 255, 255, 0.8);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

/* Zone de contenu */
.content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* ==================== COMPOSANTS UI ==================== */

/* En-tête de page */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 3px solid rgba(52, 152, 219, 0.2);
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.header-content h2 {
    margin: 0 0 8px 0;
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-content h2 i {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 15px;
}

/* Boutons */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--info), #2980b9);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #229954);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #c0392b);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #e67e22);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, #17a2b8, #138496);
    color: white;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 12px;
}

/* Cartes statistiques */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 18px;
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
    transition: transform var(--transition-slow);
}

.stat-card:hover::before {
    transform: translateX(100%) translateY(100%) rotate(45deg);
}

.stat-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.stat-card.blue { 
    border-left: 4px solid var(--info);
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.05), var(--card-bg));
}

.stat-card.green { 
    border-left: 4px solid var(--success);
    background: linear-gradient(135deg, rgba(39, 174, 96, 0.05), var(--card-bg));
}

.stat-card.orange { 
    border-left: 4px solid var(--warning);
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.05), var(--card-bg));
}

.stat-card.purple { 
    border-left: 4px solid #9b59b6;
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.05), var(--card-bg));
}

.stat-icon {
    font-size: 38px;
    padding: 15px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 65px;
    height: 65px;
    transition: all var(--transition-base);
}

.stat-card:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

.stat-card.blue .stat-icon { 
    color: var(--info);
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.15), rgba(52, 152, 219, 0.05));
    box-shadow: 0 3px 12px rgba(52, 152, 219, 0.2);
}

.stat-card.green .stat-icon { 
    color: var(--success);
    background: linear-gradient(135deg, rgba(39, 174, 96, 0.15), rgba(39, 174, 96, 0.05));
    box-shadow: 0 3px 12px rgba(39, 174, 96, 0.2);
}

.stat-card.orange .stat-icon { 
    color: var(--warning);
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.15), rgba(243, 156, 18, 0.05));
    box-shadow: 0 3px 12px rgba(243, 156, 18, 0.2);
}

.stat-card.purple .stat-icon { 
    color: #9b59b6;
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.15), rgba(155, 89, 182, 0.05));
    box-shadow: 0 3px 12px rgba(155, 89, 182, 0.2);
}

.stat-info h3 {
    font-size: 36px;
    font-weight: 800;
    margin: 0 0 6px 0;
    color: var(--text-primary);
    line-height: 1;
}

.stat-info p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Cartes générales */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-base);
    margin-bottom: 25px;
}

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

.card-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--gray-50), rgba(255, 255, 255, 0.9));
}

.card-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-body {
    padding: 25px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
}

.data-table th,
.data-table td {
    padding: 15px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: linear-gradient(135deg, var(--gray-50), rgba(255, 255, 255, 0.95));
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 1px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table tbody tr {
    transition: all var(--transition-base);
}

.data-table tbody tr:hover {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.08), rgba(255, 255, 255, 0.95));
    transform: translateX(2px);
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid;
    transition: all var(--transition-base);
}

.badge-primary { background: var(--primary-color); color: white; }
.badge-success { background: var(--success); color: white; }
.badge-danger { background: var(--danger); color: white; }
.badge-warning { background: var(--warning); color: white; }
.badge-info { background: var(--info); color: white; }

.service-badge {
    background: linear-gradient(135deg, var(--info), #2980b9);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.vacation-balance {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 15px;
    font-weight: 600;
    font-size: 12px;
    border: 2px solid;
}

.vacation-balance.low {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(192, 57, 43, 0.05));
    color: #c0392b;
    border-color: rgba(231, 76, 60, 0.3);
}

.vacation-balance.high {
    background: linear-gradient(135deg, rgba(39, 174, 96, 0.1), rgba(34, 153, 84, 0.05));
    color: var(--success);
    border-color: rgba(39, 174, 96, 0.3);
}

/* Statuts */
.status-badge {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 2px solid;
}

.status-pending { 
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    color: #856404;
    border-color: rgba(133, 100, 4, 0.3);
}

.status-approved { 
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
    border-color: rgba(21, 87, 36, 0.3);
}

.status-rejected { 
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border-color: rgba(114, 28, 36, 0.3);
}

.status-cancelled { 
    background: linear-gradient(135deg, #e2e3e5, #d6d8db);
    color: #383d41;
    border-color: rgba(56, 61, 65, 0.3);
}

/* Alertes */
.alert {
    padding: 15px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: linear-gradient(135deg, rgba(39, 174, 96, 0.1), rgba(34, 153, 84, 0.05));
    color: var(--success);
    border-color: var(--success);
}

.alert-error, .alert-danger {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(192, 57, 43, 0.05));
    color: var(--danger);
    border-color: var(--danger);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.1), rgba(230, 126, 34, 0.05));
    color: var(--warning);
    border-color: var(--warning);
}

.alert-info {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(41, 128, 185, 0.05));
    color: var(--info);
    border-color: var(--info);
}

/* Formulaires */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    transition: all var(--transition-base);
    background: rgba(255, 255, 255, 0.9);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: white;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }
    .main-content {
        margin-left: 240px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        order: 2;
    }
    
    .main-content {
        margin-left: 0;
        order: 1;
    }
    
    .admin-container {
        flex-direction: column;
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .stats-row {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .nav-menu li {
        flex: 1;
        min-width: 100px;
    }
    
    .content {
        padding: 20px 15px;
    }
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.sidebar {
    animation: slideInFromLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card {
    animation: fadeInUp 0.5s ease both;
}

.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.2s; }
.stat-card:nth-child(3) { animation-delay: 0.3s; }
.stat-card:nth-child(4) { animation-delay: 0.4s; }

/* ==================== UTILITAIRES ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary-color); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }

.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.gap-10 { gap: 10px; }
.gap-15 { gap: 15px; }
.gap-20 { gap: 20px; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.p-20 { padding: 20px; }