:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #18202a;
  --muted: #647181;
  --line: #dfe4e8;
  --occupied: #28796d;
  --occupied-soft: #d9eee9;
  --empty: #eef1f3;
  --warning: #e8a72f;
  --warning-soft: #fff0cd;
  --reserved: #a9b0b7;
  --accent: #2156a5;
  --shadow: 0 14px 40px rgba(23, 34, 48, .08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}

button, select { font: inherit; }

.shell {
  width: min(1500px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 32px;
}

.topbar, .map-heading, footer, .toolbar, .legend {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(24px, 4vw, 38px); letter-spacing: -.03em; }
h2 { margin-bottom: 5px; font-size: 18px; }
.map-heading p { margin-bottom: 0; color: var(--muted); font-size: 13px; }

.demo-badge {
  padding: 8px 12px;
  border: 1px solid var(--warning);
  border-radius: 999px;
  background: var(--warning-soft);
  color: #6f4a00;
  font-weight: 700;
  font-size: 13px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0 14px;
}

.metric, .map-section, .toolbar {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.metric { padding: 17px 18px; border-radius: 16px; }
.metric span, .metric small { display: block; color: var(--muted); }
.metric strong { display: block; margin: 8px 0 3px; font-size: 30px; letter-spacing: -.03em; }
.metric small { font-size: 12px; }

.toolbar { padding: 12px 16px; border-radius: 14px; }
.toolbar label { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
select { min-width: 120px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); }
.legend { justify-content: flex-end; font-size: 12px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot.occupied { background: var(--occupied); }
.dot.empty { background: var(--empty); border: 1px solid var(--line); }
.dot.warning { background: var(--warning); }
.dot.reserved { background: var(--reserved); }

.map-section { margin-top: 14px; padding: 18px; border-radius: 18px; overflow: hidden; }
.selected-slot { min-height: 34px; padding: 8px 11px; border-radius: 9px; background: var(--bg); color: var(--text) !important; }
.warehouse-map { margin-top: 18px; overflow-x: auto; padding-bottom: 6px; }
.map-row { display: grid; grid-template-columns: 30px repeat(11, minmax(46px, 1fr)); gap: 5px; min-width: 680px; margin-bottom: 5px; }
.axis { display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.bay { min-height: 72px; padding: 5px; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--text); cursor: pointer; }
.bay:hover, .bay:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.bay[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 24%, transparent); }
.bay-count { display: block; margin-bottom: 4px; font-size: 11px; font-weight: 700; }
.levels { display: grid; grid-template-rows: repeat(6, 6px); gap: 2px; }
.level { border-radius: 2px; background: var(--empty); }
.level.occupied { background: var(--occupied); }
.level.warning { background: var(--warning); }
.level.reserved { background: var(--reserved); }
.level.pick { box-shadow: inset 0 0 0 1px var(--accent); }
.gap { min-height: 72px; }

footer { margin-top: 14px; color: var(--muted); font-size: 12px; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101419;
    --panel: #171d23;
    --text: #edf2f5;
    --muted: #a5b0bc;
    --line: #2d363f;
    --occupied: #54b4a4;
    --occupied-soft: #183e38;
    --empty: #2a323a;
    --warning: #f0b84c;
    --warning-soft: #423416;
    --reserved: #68717a;
    --accent: #7ca9ed;
    --shadow: 0 14px 40px rgba(0, 0, 0, .24);
  }
  .demo-badge { color: #ffd885; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 20px, 1500px); padding-top: 18px; }
  .metrics { grid-template-columns: 1fr; }
  .toolbar { align-items: flex-start; }
  .legend { justify-content: flex-start; }
}