/* Variables CSS */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Styles généraux */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
    line-height: 1.6;
}

/* Login page */
.login-container {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    border-radius: 15px 15px 0 0;
    padding: 2rem;
}

/* Navigation */
.navbar-brand {
    font-weight: 700;
    font-size: 1.2rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #e9ecef;
    font-weight: 600;
    color: var(--dark-color);
}

/* Stat cards */
.stat-card {
    background: linear-gradient(135deg, #fff, #f8f9fa);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

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

.stat-card .card-body {
    padding: 1.5rem;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1rem;
}

.stat-icon.primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
}

.stat-icon.success {
    background: linear-gradient(135deg, var(--success-color), #1e7e34);
}

.stat-icon.warning {
    background: linear-gradient(135deg, var(--warning-color), #e0a800);
}

.stat-icon.danger {
    background: linear-gradient(135deg, var(--danger-color), #c82333);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.table thead th {
    background-color: var(--primary-color);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem;
}

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

.table tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.05);
}

.table td {
    padding: 1rem;
    border-color: #e9ecef;
    vertical-align: middle;
}

/* Forms */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 1px solid #ced4da;
    padding: 0.75rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0056b3, #004085);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #1e7e34);
    border: none;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #c82333);
    border: none;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    color: #856404;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1, #bee5eb);
    color: #0c5460;
}

/* Badges */
.badge {
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-weight: 500;
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--success-color), #1e7e34) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--danger-color), #c82333) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, var(--warning-color), #e0a800) !important;
    color: #212529;
}

.badge.bg-info {
    background: linear-gradient(135deg, var(--info-color), #138496) !important;
}

/* Charts */
.chart-container {
    position: relative;
    height: 400px;
    margin: 2rem 0;
}

.chart-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
}

/* Dashboard specific */
.dashboard-header {
    background: linear-gradient(135deg, #fff, #f8f9fa);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--box-shadow);
}

.dashboard-title {
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.dashboard-subtitle {
    color: var(--secondary-color);
    margin-bottom: 0;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border: none;
}

.modal-title {
    font-weight: 600;
}

.modal-footer {
    border-top: 1px solid #e9ecef;
    background-color: #f8f9fa;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* Loading spinner */
.spinner-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* Responsive */
@media (max-width: 768px) {
    .stat-card {
        margin-bottom: 1rem;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
    
    .btn {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }
    
    .dashboard-header {
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    .login-card {
        margin: 1rem;
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

/* Custom utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
}

.bg-gradient-success {
    background: linear-gradient(135deg, var(--success-color), #1e7e34);
}

.shadow-sm {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

.shadow-lg {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
}

.rounded-lg {
    border-radius: 12px !important;
}

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

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

/* Print styles */
@media print {
    .navbar, .btn, .alert {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #dee2e6 !important;
    }
}