:root {
    --primary-color: #2196f3;
    --success-color: #4caf50;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --info-color: #9c27b0;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --border-radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--gray-800);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 24px;
}

/* 头部样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-200);
}

.page-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 8px;
}

.title-icon {
    font-size: 32px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--gray-100);
    border-radius: 20px;
    font-size: 14px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.status-dot.connected {
    background-color: var(--success-color);
    box-shadow: 0 0 10px var(--success-color);
}

.status-dot.disconnected {
    background-color: var(--danger-color);
}

.status-dot.loading {
    background-color: var(--warning-color);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.btn-refresh {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    color: var(--gray-600);
}

.btn-refresh:hover {
    background: var(--gray-200);
    color: var(--primary-color);
    transform: rotate(180deg);
}

.btn-refresh svg {
    fill: currentColor;
}

.btn-refresh svg.refreshing {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 统计卡片 */
.stats-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    border-left: 4px solid var(--gray-400);
}

.stat-card.up {
    border-left-color: var(--success-color);
}

.stat-card.down {
    border-left-color: var(--danger-color);
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 32px;
    font-weight: 600;
    color: var(--gray-800);
}

/* 筛选区域 */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
    background: var(--gray-100);
    padding: 16px;
    border-radius: var(--border-radius);
}

.search-box {
    flex: 2;
    min-width: 250px;
}

.search-input {
    width: 100%;
    padding: 10px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: all 0.3s;
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.filter-group {
    flex: 1;
    display: flex;
    gap: 8px;
    min-width: 250px;
}

.filter-select {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-select:hover {
    border-color: var(--primary-color);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* 服务卡片网格 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
    min-height: 200px;
}

/* 服务卡片 */
.service-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    border-left: 4px solid var(--gray-400);
    position: relative;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.service-card.up {
    border-left-color: var(--success-color);
}

.service-card.down {
    border-left-color: var(--danger-color);
}

.service-card.paused {
    border-left-color: var(--warning-color);
}

.service-card.maintenance {
    border-left-color: var(--info-color);
}

.service-header {
    padding: 16px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.service-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    flex: 1;
    word-break: break-word;
}

.service-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    background: var(--gray-100);
    color: var(--gray-700);
    white-space: nowrap;
}

.badge-up {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.badge-down {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
}

.badge-paused {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning-color);
}

.badge-maintenance {
    background: rgba(156, 39, 176, 0.1);
    color: var(--info-color);
}

.service-body {
    padding: 16px;
    flex: 1;
}

.service-url {
    margin-bottom: 12px;
    font-size: 13px;
    background: var(--gray-100);
    padding: 8px 12px;
    border-radius: 6px;
    word-break: break-all;
}

.service-url a {
    color: var(--primary-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.service-url a:hover {
    text-decoration: underline;
}

.service-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    font-size: 13px;
}

.service-stat {
    text-align: center;
    padding: 8px;
    background: var(--gray-100);
    border-radius: 6px;
}

.stat-label {
    display: block;
    color: var(--gray-600);
    font-size: 11px;
    margin-bottom: 4px;
}

.stat-value {
    font-weight: 600;
    color: var(--gray-800);
}

/* 加载和空状态 */
.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-600);
    font-size: 16px;
    background: var(--gray-100);
    border-radius: var(--border-radius);
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-600);
    background: var(--gray-100);
    border-radius: var(--border-radius);
    font-size: 16px;
}

/* 页脚 */
.footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--gray-600);
}

.update-info {
    display: flex;
    align-items: center;
    gap: 4px;
}

.cache-info {
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

/* 工具类 */
.hidden {
    display: none !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 16px;
    }

    .page-title {
        font-size: 24px;
    }

    .stats-summary {
        gap: 8px;
    }

    .stat-card {
        padding: 12px;
    }

    .stat-value {
        font-size: 24px;
    }

    .filters {
        flex-direction: column;
    }

    .search-box, .filter-group {
        width: 100%;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .container {
        box-shadow: none;
    }

    .btn-refresh, .filters {
        display: none;
    }
}

/* 可用性统计样式 */
.service-uptime {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--gray-300);
}

.uptime-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.uptime-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.uptime-item {
    text-align: center;
    padding: 8px 4px;
    background: var(--gray-100);
    border-radius: 6px;
    transition: all 0.2s;
}

.uptime-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.uptime-label {
    display: block;
    font-size: 11px;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.uptime-value {
    display: block;
    font-size: 14px;
    font-weight: 600;
}

/* 可用性等级颜色 */
.uptime-excellent {
    color: #4caf50;
}

.uptime-good {
    color: #8bc34a;
}

.uptime-fair {
    color: #ff9800;
}

.uptime-poor {
    color: #f44336;
}

.uptime-unknown {
    color: var(--gray-500);
}

/* 故障信息样式 */
.outage-info {
    margin-top: 12px;
    padding: 8px 12px;
    background: rgba(244, 67, 54, 0.1);
    border-radius: 6px;
    color: var(--danger-color);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 当前状态区域调整 */
.current-status {
    margin-bottom: 8px;
}

/* 添加微小的动画效果 */
@keyframes uptimePulse {
    0% { opacity: 0.8; }
    50% { opacity: 1; }
    100% { opacity: 0.8; }
}

.service-card.down .uptime-value {
    animation: uptimePulse 2s infinite;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .uptime-grid {
        gap: 4px;
    }
    
    .uptime-item {
        padding: 6px 2px;
    }
    
    .uptime-value {
        font-size: 12px;
    }
}