:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5c5c5c;
  --line: #d8d8d8;
  --accent: #1f4e79;
  --panel: #f5f5f5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --fg: #e8e8e8;
    --muted: #a0a0a0;
    --line: #333333;
    --accent: #7fb3e0;
    --panel: #1d1d1d;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}

main {
  max-width: 44rem;
  margin: 0 auto;
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 0.25rem;
}

h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--line);
}

.sub {
  color: var(--muted);
  margin: 0 0 2rem;
}

a {
  color: var(--accent);
}

code {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.05rem 0.3rem;
  font-size: 0.9em;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1rem 1.25rem;
}

ul {
  padding-left: 1.2rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
}

/* --- public board pages --- */

.muted {
  color: var(--muted);
}

.boards {
  list-style: none;
  padding: 0;
}

.boards li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  margin-bottom: 0.4rem;
}

/* A long board must scroll inside its own box, never the page. */
.scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td.rank,
td.value {
  font-variant-numeric: tabular-nums;
}

td.rank {
  color: var(--muted);
  width: 3rem;
}

td.value {
  font-weight: 600;
}

tbody tr:nth-child(-n + 3) td.rank {
  color: var(--fg);
  font-weight: 700;
}