:root {
  --bg-page: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #19233c;
  --border-subtle: rgba(148, 163, 184, 0.14);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --accent: #10b981;
  --warn: #f59e0b;
  --radius-lg: 14px;
  --radius-md: 10px;
}

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

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
  padding: 24px 28px 96px;
}

.app-layout {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* 顶部演示横幅 */
.demo-guide-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 14px;
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.18), rgba(16, 185, 129, 0.14));
  border: 1px solid rgba(99, 102, 241, 0.4);
  padding: 12px 18px;
  border-radius: var(--radius-md);
}

.guide-badge {
  background: #6366f1;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.guide-text {
  flex: 1 1 260px;
  font-size: 13.5px;
  color: #e2e8f0;
  overflow-wrap: anywhere;
}

.guide-text code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  padding: 1px 6px;
  border-radius: 5px;
  background: rgba(99, 102, 241, 0.2);
  color: #c7d2fe;
  white-space: nowrap;
}

/* 顶部导航 */
.top-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 14px 22px;
  border-radius: var(--radius-lg);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #10b981);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.8);
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.brand-tag {
  font-size: 11px;
  padding: 2px 7px;
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-item:hover,
.nav-item.active {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.06);
}

.nav-actions {
  display: flex;
  gap: 10px;
}

/* 按钮通用 */
.btn {
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: rgba(148, 163, 184, 0.12);
  color: #e2e8f0;
  border: 1px solid var(--border-subtle);
}

.btn-accent {
  background: var(--accent);
  color: #052e16;
}

.btn-outline {
  background: transparent;
  color: #cbd5e1;
  border: 1px solid rgba(203, 213, 225, 0.25);
}

/* 主视觉卡片 */
.hero-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.22), rgba(19, 27, 46, 0.95) 60%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px 32px;
}

.hero-content {
  max-width: 640px;
}

.status-pill {
  display: inline-block;
  font-size: 12px;
  color: #34d399;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 10px;
  line-height: 1.3;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 14.5px;
  margin-bottom: 20px;
}

.hero-buttons {
  display: flex;
  gap: 12px;
}

.gauge-ring {
  width: 148px;
  height: 148px;
  border-radius: 50%;
  background: conic-gradient(#6366f1 0% 72%, #10b981 72% 94%, rgba(255,255,255,0.08) 94% 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.gauge-inner {
  width: 118px;
  height: 118px;
  border-radius: 50%;
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.gauge-value {
  font-size: 24px;
  font-weight: 800;
  color: #f8fafc;
}

.gauge-label {
  font-size: 11.5px;
  color: var(--text-muted);
}

/* 三栏指标卡 */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.metric-title {
  font-size: 13.5px;
  color: var(--text-muted);
}

.metric-trend {
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
}

.metric-trend.up {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.metric-trend.down {
  background: rgba(99, 102, 241, 0.18);
  color: #818cf8;
}

.metric-trend.warn {
  background: rgba(245, 158, 11, 0.16);
  color: #fbbf24;
}

.metric-value {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.metric-value small {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

.metric-desc {
  font-size: 12.5px;
  color: var(--text-muted);
}

/* 表格区 */
.panel-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.panel-title {
  font-size: 17px;
  font-weight: 700;
}

.panel-subtitle {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

.panel-filters {
  display: flex;
  gap: 10px;
}

.search-input {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text-main);
  font-size: 13px;
  width: 210px;
}

.endpoints-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.endpoints-table th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 600;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.endpoints-table td {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.model-tag {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  background: rgba(99, 102, 241, 0.14);
  color: #c7d2fe;
  padding: 3px 8px;
  border-radius: 6px;
}

.badge {
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 600;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.18);
  color: #fbbf24;
}

.btn-table-action {
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
  border: 1px solid var(--border-subtle);
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}

.btn-table-action:hover {
  background: rgba(99, 102, 241, 0.25);
  border-color: rgba(99, 102, 241, 0.5);
}