/* Styles généraux */
:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 10px;
    --box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

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

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

.btn {
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #6b46c1);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(102, 126, 234, 0.2);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark-color);
}

.logo-highlight {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    color: #666;
    font-weight: 500;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

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

/* Hero Section */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.05;
    clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
}

/* Dashboard Layout */
.main-content {
    margin-left: 250px;
    transition: var(--transition);
    min-height: 100vh;
    background: #f8f9fa;
}

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 250px;
    background: white;
    border-right: 1px solid #dee2e6;
    z-index: 100;
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #dee2e6;
    text-align: center;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--dark-color);
}

.sidebar-nav {
    padding: 20px 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 5px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #666;
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: #f8f9fa;
    color: var(--primary-color);
}

.sidebar-nav a.active {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.1), transparent);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: block;
    }
}

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

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

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: 1px solid #e9ecef;
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: #f8f9fa;
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
}

.table td {
    padding: 12px 15px;
    border-bottom: 1px solid #e9ecef;
}

.table tr:hover {
    background: #f8f9fa;
}

/* Forms */
.form-control {
    padding: 12px 15px;
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    width: 100%;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #495057;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeeba;
    color: #856404;
}

/* Loader */
.loader {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
    }
}