:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
}

body {
    font-family: 'Microsoft JhengHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.08);
}

.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
}

.table-hover tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.05);
}

.btn {
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,.15);
}

.avatar {
    font-size: 1rem;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* 響應式調整 */
@media (max-width: 768px) {
    .card-body {
        padding: 1rem;
    }
    
    .table {
        font-size: 0.875rem;
    }
}