/* 响应式样式 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .card-header {
        font-size: 14px;
    }
    
    .form-control {
        font-size: 13px;
    }
    
    .btn {
        font-size: 13px;
    }
    
    .display-4 {
        font-size: 1.5rem;
    }
    
    .table-responsive {
        font-size: 12px;
    }
    
    .table th {
        font-size: 12px;
        padding: 6px;
    }
    
    .table td {
        font-size: 12px;
        padding: 6px;
    }
    
    .total-card {
        margin-bottom: 10px;
    }
    
    .total-card .card-body {
        padding: 10px;
    }
    
    .total-card .card-title {
        font-size: 13px;
        margin-bottom: 5px;
    }
    
    .total-card .display-4 {
        font-size: 1.2rem;
    }
    
    .pagination .page-item .page-link {
        font-size: 12px;
        padding: 4px 8px;
    }
    
    /* 统计卡片响应式 */
    .stat-card {
        padding: 12px;
        margin-bottom: 10px;
    }
    
    .stat-icon {
        font-size: 1.5rem;
        margin-right: 10px;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    /* 图表响应式 */
    .chart-container {
        margin-bottom: 20px;
    }
}