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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    overflow-x: hidden;
}

/* Cards */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

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

.card-header {
    background: white;
    border-bottom: 1px solid #e9ecef;
    padding: 15px 20px;
    font-weight: 600;
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #495057;
}

.table-hover tbody tr:hover {
    background-color: #f8f9fa;
}

/* Badges */
.badge {
    padding: 5px 10px;
    font-weight: 500;
}

/* Boutons */
.btn {
    border-radius: 5px;
    padding: 8px 20px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* Formulaires */
.form-control, .form-select {
    border-radius: 5px;
    border: 1px solid #dee2e6;
    padding: 10px 15px;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Alertes */
.alert {
    border: none;
    border-radius: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .container-fluid {
        padding: 15px;
    }
    
    .table-responsive {
        font-size: 14px;
    }
    
    .btn {
        padding: 6px 15px;
        font-size: 14px;
    }
}

/* Loading spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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