:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2230;
  --muted: #5b6475;
  --line: #e3e6ec;
  --accent: #2459d6;
  --good: #137a4b;
  --good-bg: #e3f5ec;
  --bad: #b42318;
  --bad-bg: #fde8e6;
  --warn: #9a5b00;
  --warn-bg: #fff1d6;
  --computational: #1f7a85;
  --inferential: #c2405a;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151c;
    --surface: #1a202a;
    --text: #e8ebf1;
    --muted: #9aa3b2;
    --line: #2b3240;
    --accent: #7aa2ff;
    --good: #5fd39a;
    --good-bg: #133326;
    --bad: #ff8a80;
    --bad-bg: #3a1a18;
    --warn: #ffc46b;
    --warn-bg: #3a2a10;
    --computational: #6cc5cf;
    --inferential: #f28ba0;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.topbar h1 { font-size: 18px; margin: 0; }
.topbar nav a { margin-left: 16px; text-decoration: none; font-weight: 500; }

main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.metrics { display: flex; flex-wrap: wrap; gap: 8px; }

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--line);
}

.pill.good { background: var(--good-bg); color: var(--good); border-color: transparent; }
.pill.bad { background: var(--bad-bg); color: var(--bad); border-color: transparent; }
.pill.warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }

button, input {
  font: inherit;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}

button { cursor: pointer; font-weight: 600; }
button.primary { background: var(--accent); color: #fff; border-color: transparent; }
button:disabled { opacity: 0.5; cursor: default; }

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.status { text-transform: capitalize; }
.error { color: var(--bad); font-weight: 600; }
.muted { color: var(--muted); }

.kind { font-size: 12px; font-weight: 700; letter-spacing: 0.3px; }
.kind.computational { color: var(--computational); }
.kind.inferential { color: var(--inferential); }

.history { display: flex; flex-wrap: wrap; gap: 6px; }
.history span { width: 18px; height: 18px; border-radius: 4px; display: inline-block; }
.history .ok { background: var(--good); }
.history .fail { background: var(--bad); }

@media (max-width: 640px) {
  .topbar { flex-direction: column; align-items: flex-start; }
  .topbar nav a { margin: 0 16px 0 0; }
}