:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --ink: #1d1f21;
  --muted: #62666b;
  --line: #dcdcd7;
  --accent: #2f6fdf;
  --ok: #1f8a4c;
  --warn: #b7791f;
  --bad: #c0392b;
  --band: rgba(47, 111, 223, 0.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15171a;
    --panel: #1d2024;
    --ink: #e6e6e3;
    --muted: #9aa0a6;
    --line: #33373c;
    --accent: #7aa7ff;
    --ok: #4cc081;
    --warn: #e0a84a;
    --bad: #ff6b5b;
    --band: rgba(122, 167, 255, 0.10);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #15171a; --panel: #1d2024; --ink: #e6e6e3; --muted: #9aa0a6; --line: #33373c;
  --accent: #7aa7ff; --ok: #4cc081; --warn: #e0a84a; --bad: #ff6b5b;
  --band: rgba(122, 167, 255, 0.10); color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.top, .controls, main, footer, .banner { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.top { display: flex; gap: 16px; justify-content: space-between; align-items: flex-start; padding-top: 20px; flex-wrap: wrap; }
h1 { font-size: 1.5rem; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 1.1rem; margin: 28px 0 8px; }
.sub { margin: 4px 0 0; color: var(--muted); }
.health { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 8px 12px; font-size: 0.9rem; min-width: 220px; }
.health .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.health .silent { color: var(--warn); }
.banner { margin-top: 12px; }
.banner > div { background: var(--bad); color: #fff; padding: 10px 14px; border-radius: 8px; font-weight: 600; }

.controls { margin-top: 16px; }
.row { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; margin: 8px 0; }
.lbl { color: var(--muted); font-size: 0.85rem; min-width: 48px; }
button, select, input {
  font: inherit; font-size: 0.9rem; color: var(--ink); background: var(--panel);
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px;
}
button { cursor: pointer; }
button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
input[type="number"] { width: 4.2em; padding: 4px 6px; }
.custom { color: var(--muted); font-size: 0.85rem; display: inline-flex; gap: 4px; align-items: center; }
.csv { margin-left: auto; color: var(--accent); }
.hint { color: var(--muted); font-size: 0.8rem; margin: 4px 0 0; }
.group { display: inline-flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; background: var(--panel); }
.group > button { padding: 2px 8px; font-size: 0.8rem; }
.dev { display: inline-flex; gap: 5px; align-items: center; font-size: 0.9rem; cursor: pointer; }
.swatch { width: 14px; height: 3px; border-radius: 2px; display: inline-block; }
.swatch.dashed { background: none !important; border-top: 3px dashed; height: 0; }

.charts { display: grid; gap: 12px; }
.chart { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 4px 4px; overflow: hidden; }
.chart h3 { margin: 0 8px 2px; font-size: 0.95rem; font-weight: 600; }
.chart .empty { color: var(--muted); padding: 24px 12px; font-size: 0.9rem; }
.u-legend { font-size: 0.8rem; }
.u-select { background: var(--band); }
.model-note, .range-label { font-weight: 400; color: var(--muted); font-size: 0.85rem; }

.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 0.85rem; font-variant-numeric: tabular-nums; }
th, td { padding: 6px 10px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child, th:nth-child(2), td:nth-child(2) { text-align: left; }
thead th { color: var(--muted); font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }

footer { color: var(--muted); font-size: 0.8rem; margin: 32px auto 40px; }
footer a { color: var(--accent); }