:root {
  color-scheme: light dark;
  --fg: #0f172a;
  --muted: #64748b;
  --bg: #ffffff;
  --panel: #f8fafc;
  --border: #e2e8f0;
  --accent: #2563eb;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
}
@media (prefers-color-scheme: dark) {
  :root { --fg: #e2e8f0; --muted: #94a3b8; --bg: #0b1120; --panel: #111827; --border: #1f2937; --accent: #60a5fa; }
}
body { margin: 0 auto; max-width: 1200px; padding: 1rem 1.5rem 3rem; }
h1 { margin: 0.5rem 0 0.25rem; font-size: 1.6rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.75rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
.controls { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin: 0.5rem 0; }
.presets { display: inline-flex; gap: 0.25rem; }
button, input, select {
  font: inherit; color: inherit; background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px; padding: 0.3rem 0.6rem;
}
button:not(:disabled) { cursor: pointer; }
button:not(:disabled):hover { border-color: var(--accent); }
button:disabled { opacity: 0.45; }
a { color: var(--accent); }
.chart { min-height: 120px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 0.5rem; }
.summary { display: grid; grid-template-columns: max-content 1fr; gap: 0.25rem 1rem; margin: 0.75rem 0 0; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
th, td { padding: 0.35rem 0.6rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { position: sticky; top: 0; background: var(--panel); }
th button { border: 0; background: none; padding: 0; font-weight: 600; }
.num { text-align: right; }
th.num button { width: 100%; text-align: right; }
tbody tr:hover { background: var(--panel); }
.pager { justify-content: flex-end; }
.error { color: #dc2626; font-weight: 600; }