:root {
  --bg-main: #0c0e14;
  --bg-card: rgba(22, 27, 34, 0.7);
  --bg-card-hover: rgba(28, 35, 45, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --text-dim: #6e7681;
  --accent: #58a6ff;
  --online: #3fb950;
  --online-bg: rgba(63, 185, 80, 0.12);
  --offline: #f85149;
  --offline-bg: rgba(248, 81, 73, 0.12);
  --warn: #d29922;
  --warn-bg: rgba(210, 153, 34, 0.12);
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --radius-lg: 14px;
  --radius-md: 8px;
  --radius-sm: 6px;
}

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

body {
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 15% 15%, rgba(56, 139, 253, 0.05) 0px, transparent 50%),
    radial-gradient(at 85% 85%, rgba(63, 185, 80, 0.04) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.layout {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 20px 40px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 导航栏 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-dot {
  width: 14px;
  height: 14px;
  background: linear-gradient(135deg, #58a6ff, #1f6feb);
  border-radius: 4px;
  box-shadow: 0 0 12px rgba(88, 166, 255, 0.5);
}

.brand-text h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  display: inline-block;
  margin-right: 8px;
}

.brand-text .sub {
  font-size: 13px;
  color: var(--text-muted);
}

.controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.summary-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

.dot-online {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--online);
  box-shadow: 0 0 8px rgba(63, 185, 80, 0.6);
  animation: pulse 2.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(63, 185, 80, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(63, 185, 80, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(63, 185, 80, 0); }
}

.view-switch {
  display: flex;
  background: rgba(22, 27, 34, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
}

.view-switch .btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.view-switch .btn:hover {
  color: var(--text-main);
}

.view-switch .btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 卡片视图 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 16px;
}

.node-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.node-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.node-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.node-name-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-name {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.local-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
  border: 1px solid rgba(88, 166, 255, 0.25);
  font-weight: 600;
}

.node-meta {
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}

.meta-pill {
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 6px;
  border-radius: 4px;
}

.status-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.status-badge.online {
  background: var(--online-bg);
  color: var(--online);
  border: 1px solid rgba(63, 185, 80, 0.2);
}

.status-badge.offline {
  background: var(--offline-bg);
  color: var(--offline);
  border: 1px solid rgba(248, 81, 73, 0.2);
}

.status-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* 进度条指标区域 */
.metrics-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.metric-label {
  color: var(--text-muted);
  font-weight: 500;
}

.metric-value {
  color: var(--text-main);
  font-family: var(--font-mono);
  font-weight: 600;
}

.progress-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease, background 0.3s ease;
}

.progress-fill.normal {
  background: linear-gradient(90deg, #238636, #3fb950);
}

.progress-fill.warn {
  background: linear-gradient(90deg, #9e6a03, #d29922);
}

.progress-fill.danger {
  background: linear-gradient(90deg, #da3633, #f85149);
}

/* 统计卡片底部小部件 */
.card-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-title {
  font-size: 11px;
  color: var(--text-dim);
}

.stat-desc {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stat-desc b {
  color: var(--text-main);
  font-weight: 500;
}

.traffic-in { color: #58a6ff !important; }
.traffic-out { color: #bc8cff !important; }

/* 表格视图 */
.table-wrapper {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.probe-table {
  width: 100%;
  min-width: 960px;
  border-collapse: collapse;
  text-align: left;
}

.probe-table th {
  background: rgba(0, 0, 0, 0.25);
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.probe-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 13px;
  vertical-align: middle;
}

.probe-table tr:last-child td {
  border-bottom: none;
}

.probe-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.col-mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

.mini-bar-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 110px;
}

.mini-bar {
  flex: 1;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.mini-bar-fill {
  height: 100%;
  border-radius: 3px;
}

.table-node {
  display: flex;
  flex-direction: column;
}

.table-node .name {
  font-weight: 600;
  color: #fff;
}

.table-node .sub {
  font-size: 11px;
  color: var(--text-dim);
}

/* 页脚 */
.footer {
  margin-top: auto;
  padding-top: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}

.update-time {
  font-family: var(--font-mono);
}

/* 错误提示 */
.error-msg {
  text-align: center;
  padding: 40px;
  color: var(--offline);
  background: var(--bg-card);
  border: 1px dashed rgba(248, 81, 73, 0.3);
  border-radius: var(--radius-lg);
}

/* 响应式调整 (Mobile) */
@media (max-width: 768px) {
  .layout {
    padding: 16px 12px 28px;
  }
  
  .navbar {
    margin-bottom: 16px;
  }
  
  .brand-text h1 {
    font-size: 18px;
  }
  
  .controls {
    width: 100%;
    justify-content: space-between;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .node-card {
    padding: 14px;
    gap: 12px;
  }
  
  .card-stats-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  
  .footer {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    padding-top: 24px;
  }
}