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

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

/* Login */
.login-body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: #333;
    margin-bottom: 10px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.login-form input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

/* Header */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 0 20px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    color: #333;
    font-size: 24px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Navigation */
.nav {
    background: #2c3e50;
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 0;
}

.nav a {
    color: white;
    text-decoration: none;
    padding: 15px 20px;
    display: block;
    transition: background 0.3s;
}

.nav a:hover, .nav a.active {
    background: #34495e;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-card.stat-warning {
    border-left: 4px solid #e74c3c;
}

.stat-icon {
    font-size: 2em;
}

.stat-info h3 {
    margin-bottom: 5px;
    color: #333;
}

.stat-info p {
    font-size: 1.5em;
    font-weight: bold;
    color: #2c3e50;
}

/* Tables */
.table-responsive {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.table th, .table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background: #f8f9fa;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #2980b9;
}

.btn-primary {
    background: #3498db;
}

.btn-outline {
    background: transparent;
    border: 1px solid #3498db;
    color: #3498db;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.9em;
}

/* Status badges */
.status-badge {
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8em;
    font-weight: 500;
}

.status-payé {
    background: #d4edda;
    color: #155724;
}

.status-impayé {
    background: #f8d7da;
    color: #721c24;
}

/* Alerts */
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Sections */
.section {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    background: #2c3e50;
    color: white;
    margin-top: 50px;
}

/* Responsive */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nav ul {
        flex-direction: column;
    }
    
    .table-responsive {
        overflow-x: auto;
    }
}
/* Styles supplémentaires */

/* Formulaires */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 0.8em;
}

.form-actions {
    margin-top: 30px;
    text-align: right;
}

/* Alertes */
.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

/* Cartes d'information */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.info-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.info-card h4 {
    margin-bottom: 10px;
    color: #2c3e50;
}

/* Actions rapides */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.quick-action {
    background: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    color: #333;
    border: 1px solid #e9ecef;
    transition: all 0.3s;
}

.quick-action:hover {
    border-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.action-icon {
    font-size: 2em;
    margin-bottom: 10px;
}

/* Boutons d'action */
.action-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

/* Filtres */
.filter-form {
    display: flex;
    gap: 15px;
    align-items: end;
    flex-wrap: wrap;
}

.filter-form .form-group {
    margin-bottom: 0;
}

/* Responsive amélioré */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .section-header {
        flex-direction: column;
        gap: 10px;
        align-items: start;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

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