:root {
  color-scheme: dark;
  --bg: #0d1a22;
  --surface: #142830;
  --surface-2: #0f1f27;
  --line: #2e5055;
  --ink: #eff6f2;
  --ink-2: #c3d1cf;
  --muted: #8ea3a1;
  --accent: #a1d3b6;
  --critical: #e66767;
  --serious: #ec835a;
  --warning: #fab219;
  --good: #0ca30c;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

.dashboard {
  min-height: 100vh;
  padding: clamp(1rem, 2vw, 2rem);
  background: radial-gradient(ellipse at top left, #193b3b, #0d1a22 66%);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.dashboard:fullscreen { height: 100vh; overflow: hidden; padding: 1.25rem 1.5rem; }

/* 标题区 */
.heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.25rem; flex-wrap: wrap; }
.eyebrow { color: var(--accent); margin: 0; font-size: .9rem; letter-spacing: .02em; }
h1 { margin: .2rem 0 0; font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; letter-spacing: .02em; }
.status-block { display: flex; flex-direction: column; align-items: flex-end; gap: .2rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.clock { font-size: 1.35rem; font-weight: 600; color: var(--ink); }
.updated { font-size: .85rem; color: var(--muted); }
.controls { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.controls a { color: var(--ink-2); text-underline-offset: .2em; font-size: .92rem; }
.controls button {
  border: 1px solid var(--accent); border-radius: .5rem; padding: .5rem .9rem;
  color: #0d231c; background: var(--accent); font: inherit; font-weight: 600; cursor: pointer;
}
.controls button:hover { filter: brightness(1.08); }
.select-wrap { display: inline-flex; align-items: center; gap: .4rem; color: var(--ink-2); font-size: .92rem; }
.select-wrap select {
  font: inherit; padding: .45rem .6rem; border-radius: .5rem; border: 1px solid var(--line);
  background: var(--surface-2); color: var(--ink); max-width: 16rem;
}
#fullscreen-status { margin: 0; color: var(--warning); }

/* KPI */
.kpis { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .75rem; }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: .75rem; padding: .8rem 1rem; min-width: 0; }
.kpi .label { color: var(--muted); font-size: .82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi .value { font-size: clamp(1.4rem, 2.2vw, 2rem); font-weight: 700; margin-top: .15rem; line-height: 1.15; }
.kpi .value small { font-size: .85rem; font-weight: 500; color: var(--ink-2); margin-left: .15rem; }
.kpi .sub { color: var(--ink-2); font-size: .8rem; margin-top: .2rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi.skeleton { opacity: .6; }

/* 面板网格 */
.panels {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: minmax(300px, auto) minmax(300px, auto) auto;
  gap: .9rem;
  flex: 1;
  min-height: 0;
}
.dashboard:fullscreen .panels { grid-template-rows: minmax(0, 1fr) minmax(0, 1fr) auto; }
.panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: .75rem;
  padding: .85rem 1rem 1rem; display: flex; flex-direction: column; min-height: 0; min-width: 0;
  transition: opacity .25s ease;
}
.panel.map { grid-column: 1 / span 5; grid-row: 1 / span 2; }
#panel-price { grid-column: 6 / span 4; }
#panel-suppliers { grid-column: 10 / span 3; }
#panel-sales { grid-column: 6 / span 4; }
#panel-logistics { grid-column: 10 / span 3; }
.panel.alerts { grid-column: 1 / span 12; }
.panel-head { display: flex; justify-content: space-between; align-items: baseline; gap: .5rem; margin-bottom: .35rem; }
.panel h2 { margin: 0; font-size: 1.05rem; font-weight: 600; }
.panel h2 small { color: var(--muted); font-weight: 400; font-size: .8rem; margin-left: .4rem; }
.table-toggle {
  border: 1px solid var(--line); background: transparent; color: var(--muted); border-radius: .4rem;
  padding: .15rem .5rem; font: inherit; font-size: .78rem; cursor: pointer;
}
.table-toggle:hover, .panel.show-table .table-toggle { color: var(--ink); border-color: var(--accent); }
.chart { flex: 1; min-height: 240px; width: 100%; }
.dashboard:fullscreen .chart { min-height: 0; }
.panel.show-table .chart { display: none; }
.table-wrap { display: none; flex: 1; min-height: 0; overflow: auto; }
.panel.show-table .table-wrap { display: block; }
.data-table { width: 100%; border-collapse: collapse; font-size: .82rem; font-variant-numeric: tabular-nums; }
.data-table th, .data-table td { padding: .3rem .5rem; border-bottom: 1px solid #24404a; text-align: left; white-space: nowrap; }
.data-table th { color: var(--muted); font-weight: 600; position: sticky; top: 0; background: var(--surface); }
.data-table td.num, .data-table th.num { text-align: right; }
.panel .empty { color: var(--muted); margin: auto; text-align: center; }
.panel.is-empty .chart, .panel.is-empty .table-wrap, .panel.is-empty .alert-list { display: none; }
.panel.is-empty .empty { display: block; }
.panel.error .empty { color: var(--serious); }
body.loading .panel, body.loading .kpi { opacity: .55; }

/* 提醒列表 */
.alert-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: .4rem .9rem; }
.alert-list li { display: flex; gap: .5rem; align-items: baseline; font-size: .88rem; color: var(--ink-2); }
.alert-list .lvl { flex: none; font-size: .7rem; font-weight: 700; padding: .1rem .4rem; border-radius: .3rem; color: #0d1a22; }
.alert-list .lvl.critical { background: var(--critical); }
.alert-list .lvl.serious { background: var(--serious); }
.alert-list .lvl.warning { background: var(--warning); }
.alert-list .date { color: var(--muted); margin-left: auto; font-variant-numeric: tabular-nums; white-space: nowrap; }

.foot { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: .78rem; }

@media (max-width: 1100px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .panels { grid-template-rows: none; grid-auto-rows: minmax(300px, auto); }
  .panel.map { grid-column: 1 / span 12; grid-row: auto; }
  #panel-price, #panel-sales { grid-column: 1 / span 6; }
  #panel-suppliers, #panel-logistics { grid-column: 7 / span 6; }
}
@media (max-width: 720px) {
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .panel, .panel.map, #panel-price, #panel-sales, #panel-suppliers, #panel-logistics { grid-column: 1 / span 12; }
  .status-block { align-items: flex-start; }
}