/* Variables CSS */
:root {
    /* Couleurs primaires - Bleu */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* Couleurs grises */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Espacements */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-900) 100%);
    color: white;
    padding: var(--spacing-4) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: white;
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.avatar {
    width: 40px;
    height: 40px;
    background-color: var(--primary-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Navigation */
.nav {
    background-color: white;
    border-bottom: 1px solid var(--gray-200);
}

.nav-content {
    display: flex;
    overflow-x: auto;
    padding: var(--spacing-2) 0;
}

.nav-link {
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--gray-600);
    text-decoration: none;
    white-space: nowrap;
    border-radius: 0.375rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.nav-link:hover {
    background-color: var(--gray-100);
    color: var(--primary-600);
}

.nav-link.active {
    background-color: var(--primary-50);
    color: var(--primary-700);
    font-weight: 500;
}

/* Main content */
.main-content {
    padding: var(--spacing-6) 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.page-title {
    font-size: 1.875rem;
    font-weight: bold;
    color: var(--gray-900);
}

/* Cards */
.card {
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: var(--spacing-4);
}

.card-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--gray-200);
    background-color: var(--gray-50);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: var(--spacing-4);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background: white;
    padding: var(--spacing-6);
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-700);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.875rem;
}

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

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

.table th {
    background-color: var(--gray-50);
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200);
}

.table td {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--gray-200);
}

.table tr:hover {
    background-color: var(--gray-50);
}

/* Badges */
.badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background-color: var(--primary-100);
    color: var(--primary-800);
}

.badge-secondary {
    background-color: var(--gray-100);
    color: var(--gray-800);
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    gap: var(--spacing-2);
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary-600);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-700);
}

.btn-secondary {
    background-color: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background-color: var(--gray-300);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: 0.75rem;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    background-color: white;
    transition: border-color 0.2s;
    font-size: 0.875rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Alerts */
.alert {
    padding: var(--spacing-4);
    border-radius: 0.375rem;
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background-color: var(--primary-50);
    color: var(--primary-800);
    border: 1px solid var(--primary-200);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-dialog {
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--spacing-1);
}

.modal-close:hover {
    color: var(--gray-700);
}

.modal-body {
    padding: var(--spacing-4);
}

.modal-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-2);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-3);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-3);
        text-align: center;
    }
    
    .nav-content {
        flex-wrap: nowrap;
    }
    
    .nav-link {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: 0.875rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table {
        font-size: 0.875rem;
    }
}