:root {
  --bg: #f7f7f5;
  --card: #ffffff;
  --text: #1d1d1b;
  --muted: #5d5d58;
  --line: #deded8;
  --accent: #2155a8;
  --ship: #1b7f3b;
  --hold: #b3261e;
  --extend: #9a6700;
  --grey: #b8b8b2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --card: #1f1f1e;
    --text: #ececea;
    --muted: #a6a6a0;
    --line: #34342f;
    --accent: #7aa7f0;
    --ship: #4cc274;
    --hold: #f07167;
    --extend: #e0b341;
    --grey: #55554f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header, main, footer { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 28px; }
h1 { margin: 0 0 6px; font-size: 1.7rem; }
h2 { margin: 0 0 12px; font-size: 1.1rem; }
h3 { margin: 18px 0 8px; font-size: 1rem; }
.lede { margin: 0 0 6px; max-width: 70ch; }
.links, .hint, footer { color: var(--muted); font-size: 0.9rem; }
a { color: var(--accent); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  margin: 16px 0;
}
.drop {
  display: block;
  border: 2px dashed var(--line);
  border-radius: 8px;
  padding: 22px;
  text-align: center;
  cursor: pointer;
}
.drop.over { border-color: var(--accent); }
.drop input { display: block; margin: 0 auto 8px; max-width: 100%; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; }
label.inline { flex-direction: row; align-items: center; gap: 8px; margin: 12px 0; }
select, input[type=number] {
  font: inherit;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  width: 100%;
}
fieldset { border: 1px solid var(--line); border-radius: 6px; margin: 14px 0 0; padding: 8px 12px; }
legend { font-size: 0.9rem; color: var(--muted); }
.checks { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.checks label { flex-direction: row; align-items: center; gap: 6px; }
.guardrail { display: flex; align-items: center; gap: 8px; }
.guardrail select { width: auto; padding: 2px 6px; font-size: 0.85rem; }
button { font: inherit; cursor: pointer; }
button.primary {
  margin-top: 8px;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 8px 20px;
}
button.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; }
.error { color: var(--hold); }
.verdict { border-left: 5px solid var(--grey); padding: 8px 12px; margin: 10px 0; background: var(--bg); border-radius: 0 6px 6px 0; }
.verdict.ship { border-color: var(--ship); }
.verdict.hold { border-color: var(--hold); }
.verdict.extend { border-color: var(--extend); }
.badge { font-weight: 700; letter-spacing: 0.04em; }
.ship .badge { color: var(--ship); }
.hold .badge { color: var(--hold); }
.extend .badge { color: var(--extend); }
.verdict ul { margin: 6px 0 0; padding-left: 20px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.8rem; font-variant-numeric: tabular-nums; }
th, td { text-align: right; padding: 4px 6px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
svg { max-width: 760px; display: block; }
svg text { fill: var(--text); font-size: 11px; }
svg .axis { stroke: var(--muted); }
svg .grid-line { stroke: var(--line); }
footer { padding-bottom: 32px; }