:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #16181d;
  --muted: #5d6370;
  --line: #e2e5ea;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --calm: #15803d;
  --normal: #a16207;
  --high: #b91c1c;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --panel: #171a21; --ink: #e8eaee; --muted: #9aa1ad; --line: #2a2f3a;
    --accent: #4f8cff; --calm: #4ade80; --normal: #facc15; --high: #f87171;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.top, main, .foot { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.top { padding-top: 28px; }
h1 { font-size: 26px; margin: 0 0 4px; }
h2 { font-size: 20px; margin: 0; }
h3 { font-size: 16px; margin: 28px 0 4px; }
.sub, .hint { color: var(--muted); margin: 0; }
.hint { font-size: 13px; }
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin: 20px 0;
}
.hidden { display: none; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-weight: 600; font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0 16px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.quick { margin-bottom: 16px; }
input, select {
  font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; min-height: 38px;
}
button { font: inherit; cursor: pointer; border-radius: 8px; padding: 8px 16px; min-height: 38px; border: 1px solid var(--line); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; padding: 8px 24px; }
button.primary:disabled { opacity: .6; cursor: wait; }
button.secondary { background: var(--panel); color: var(--ink); }
button.link { background: none; border: none; color: var(--accent); padding: 4px 6px; min-height: auto; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.chip {
  border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  border-radius: 999px; padding: 4px 12px; min-height: 32px; font-size: 14px;
}
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.status { color: var(--muted); font-size: 14px; }
.status.err { color: var(--high); }
.results-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 4px; }
.table-wrap { overflow-x: auto; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.big { font-weight: 700; font-size: 15px; }
.ci { color: var(--muted); font-size: 12px; margin-left: 4px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; border: 1px solid currentColor; }
.badge.Calm { color: var(--calm); }
.badge.Normal { color: var(--normal); }
.badge.High { color: var(--high); }
.warn { color: var(--normal); font-size: 12px; }
.err-cell { color: var(--high); white-space: normal; }
.chart-box { position: relative; height: 360px; margin-top: 8px; }
.method { margin-top: 20px; }
.method summary { cursor: pointer; font-weight: 600; }
.method ul { color: var(--muted); font-size: 14px; padding-left: 20px; }
.foot { color: var(--muted); font-size: 12px; padding-bottom: 28px; }
.picker { position: relative; max-width: 420px; }
.picker input { width: 100%; }
.suggest {
  position: absolute; z-index: 10; left: 0; right: 0; top: calc(100% + 4px); margin: 0; padding: 4px;
  list-style: none; background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,.12); max-height: 320px; overflow-y: auto;
}
.suggest li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 10px; border-radius: 6px; cursor: pointer; }
.suggest li.active, .suggest li:hover { background: var(--bg); }
.suggest li.empty { cursor: default; color: var(--muted); }
.suggest .sym { font-weight: 600; }
.suggest .meta { color: var(--muted); font-size: 12px; }
.chip.sel { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); display: inline-flex; align-items: center; gap: 6px; }
.chip.sel.missing { background: transparent; color: var(--high); border-color: var(--high); }
.chip .x { font-weight: 700; opacity: .8; }
.chips.small .chip { min-height: 28px; font-size: 13px; padding: 2px 10px; }
.popular-row { margin-top: 10px; align-items: flex-start; }
.popular-row .chips { margin: 0; }
#selectedChips:empty::before { content: 'No coins yet: search below or tap a popular one.'; color: var(--muted); font-size: 13px; }