/* 管理驾驶舱深色风 design tokens（develop.md §15.2）。 */
:root {
  --bg: #0B1220;
  --surface: #111827;
  --surface-elev: #1A2233;
  --border: #1F2937;
  --text-primary: #F9FAFB;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --accent-pos: #10B981;
  --accent-neg: #EF4444;
  --accent-warn: #F59E0B;
  --accent-info: #3B82F6;
  --chart-1: #3B82F6;
  --chart-2: #10B981;
  --chart-3: #F59E0B;
  --chart-4: #A78BFA;
  --chart-5: #EF4444;
  --chart-6: #22D3EE;
  --chart-7: #F472B6;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: "Inter Tight", "IBM Plex Sans", "Noto Sans SC",
    "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 13px;
  font-feature-settings: "tnum" 1;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* sidebar */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar h1 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 24px 0;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.sidebar nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar a {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: background 0.15s, color 0.15s;
}
.sidebar a:hover { background: var(--surface-elev); color: var(--text-primary); }
.sidebar a.active {
  background: var(--surface-elev);
  color: var(--text-primary);
  border-left: 2px solid var(--accent-info);
}

/* main */
.main { padding: 24px; max-width: 1440px; }

/* topbar */
.topbar {
  display: flex;
  gap: 12px;
  align-items: center;
  height: 56px;
  padding: 0 8px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.topbar h2 { margin: 0; font-size: 18px; font-weight: 600; }
.topbar form { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.topbar select, .topbar input[type="number"] {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
}
.topbar button {
  background: var(--accent-info);
  border: 0;
  color: white;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
}
.topbar-logout {
  margin-left: 12px;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.topbar-logout:hover {
  color: var(--text-primary);
  background: var(--surface-elev);
  border-color: var(--text-muted);
}

/* grid */
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }

/* cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  min-height: 120px;
}
.card-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0 0 8px 0;
}

/* KPI */
.kpi { gap: 8px; min-height: 132px; overflow: hidden; }
.kpi-value {
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: -0.02em;
}
.kpi-unit {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: 4px;
}
.kpi-delta { font-size: 12px; color: var(--text-secondary); margin-top: auto; }
.kpi-delta.up { color: var(--accent-pos); }
.kpi-delta.down { color: var(--accent-neg); }

/* chart */
.chart-canvas { width: 100%; height: 280px; }

/* table */
table.issue-table { width: 100%; border-collapse: collapse; }
table.issue-table th, table.issue-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  text-align: left;
}
table.issue-table th { color: var(--text-muted); font-weight: 500; }
table.issue-table td.severity-warn { color: var(--accent-warn); font-weight: 600; }
table.issue-table td.severity-info { color: var(--accent-info); }

/* alerts */
.alert-chip {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-warn);
  border: 1px solid rgba(245, 158, 11, 0.3);
  cursor: pointer;
  transition: filter 0.15s;
}
.alert-chip:hover { filter: brightness(1.2); }
.alert-chip.severity-error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-neg);
  border-color: rgba(239, 68, 68, 0.3);
}
.alert-chip.severity-info {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-info);
  border-color: rgba(59, 130, 246, 0.3);
}
.alert-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 12px;
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.alert-bar .alert-bar-summary {
  font-size: 12px;
  color: var(--text-muted);
  margin-right: 8px;
}
.kpi-rule-chip {
  display: inline-block;
  margin-left: 6px;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-warn);
  cursor: pointer;
  vertical-align: middle;
}
.kpi-rule-chip.severity-error {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-neg);
}

/* drilldown drawer */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: none;
  z-index: 100;
}
.drawer-backdrop.open { display: block; }
.drawer {
  position: fixed;
  top: 0; right: 0;
  width: 480px;
  max-width: 90vw;
  height: 100vh;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 101;
  transform: translateX(100%);
  transition: transform 0.2s ease-out;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.drawer.open { transform: translateX(0); }
.drawer-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.drawer-header h3 { margin: 0; font-size: 15px; font-weight: 600; }
.drawer-header .drawer-close {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}
.drawer-body { flex: 1; overflow-y: auto; padding: 16px; font-size: 13px; }
.drawer-section {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.drawer-section:last-child { border-bottom: 0; }
.drawer-section h4 {
  margin: 0 0 8px 0;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.drawer-kv {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 4px 12px;
  font-size: 12px;
}
.drawer-kv dt { color: var(--text-muted); }
.drawer-kv dd { margin: 0; color: var(--text-primary); word-break: break-all; }
.drawer-finding {
  padding: 8px;
  background: var(--surface-elev);
  border-radius: 4px;
  margin-bottom: 6px;
  font-size: 12px;
}
.drawer-finding .rule { font-weight: 500; }
.drawer-finding.severity-warn { border-left: 2px solid var(--accent-warn); }
.drawer-finding.severity-error { border-left: 2px solid var(--accent-neg); }
.drawer-finding.severity-info { border-left: 2px solid var(--accent-info); }
.kpi-clickable { cursor: pointer; transition: border-color 0.15s; }
.kpi-clickable:hover { border-color: var(--accent-info); }

.empty-state {
  padding: 32px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* watermark */
.watermark {
  position: fixed;
  bottom: 16px;
  right: 16px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.08);
  pointer-events: none;
  user-select: none;
}

/* spans */
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-12 { grid-column: span 12; }