/* 自定义样式 */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8fafc;
}

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.card-header {
    background: white;
    border-bottom: 1px solid #e2e8f0;
    font-weight: 600;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    border-bottom: 2px solid #e2e8f0;
    font-weight: 600;
    color: #475569;
}

.btn {
    border-radius: 8px;
}

.badge {
    padding: 0.35em 0.65em;
}

/* 状态指示器 */
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
}

.status-dot.online {
    background-color: #10b981;
    animation: pulse 2s infinite;
}

.status-dot.offline {
    background-color: #ef4444;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 数字动画 */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}