:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --ink: #1d1d1f;
  --muted: #6b6b70;
  --line: #d9d7d2;
  --accent: #8a1c2b;
  --ok: #1e6b3a;
  --bad: #a3361e;
  --cross: #e9e5df;
  --react: #fbe9e7;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161617; --card: #222224; --ink: #ececee; --muted: #a0a0a6; --line: #3a3a3e;
    --accent: #e0707e; --ok: #6fcf8e; --bad: #f08a6e; --cross: #34322f; --react: #3a2624;
  }
}
* { box-sizing: border-box; }
body { margin: 0; padding: 16px; background: var(--bg); color: var(--ink); font: 15px/1.45 system-ui, sans-serif; }
header, main, #setup, footer { max-width: 1200px; margin: 0 auto; }
h1 { margin: 0; font-size: 1.4rem; color: var(--accent); }
h1 .sub { color: var(--muted); font-weight: 400; font-size: 1rem; }
h2 { margin: 0 0 8px; font-size: 1.05rem; }
h3 { margin: 16px 0 6px; font-size: .95rem; }
.draft, .hint, footer { color: var(--muted); font-size: .85rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin: 12px auto; }
label { display: inline-flex; gap: 6px; align-items: center; margin-right: 12px; }
details { margin: 8px 0; }
button { font: inherit; padding: 6px 12px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; }
select { font: inherit; padding: 4px; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { border: 1px solid var(--line); padding: 3px 5px; text-align: center; min-width: 28px; }
th { font-weight: 600; font-size: .8rem; }
th.low, td.low { color: var(--muted); }
th.excluded { text-decoration: line-through 2px; color: var(--ok); }
th.phase, td.phase { background: var(--bg); }
td.phase.pos { background: var(--react); font-weight: 600; }
td.ag { cursor: pointer; }
td.ag:hover { outline: 2px solid var(--accent); outline-offset: -2px; }
td.ag.crossed { background: linear-gradient(to top right, transparent 44%, var(--ok) 45% 55%, transparent 56%), var(--cross); }
td.ag.crossed.invalid { background: linear-gradient(to top right, transparent 44%, var(--bad) 45% 55%, transparent 56%), var(--cross); }
td.ag:focus-visible { outline: 2px solid var(--accent); }
.choices { display: flex; flex-wrap: wrap; gap: 4px 10px; }
.choices label { margin: 0; }
#help button { background: transparent; color: var(--accent); }
#message.bad, #answerFeedback.bad { color: var(--bad); }
#message.ok, #answerFeedback.ok { color: var(--ok); }
#summary dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; }
#summary dt { color: var(--muted); }
#summary dd { margin: 0; }
table.finished td.ag { pointer-events: none; cursor: default; }
tr.divider th { text-align: left; background: var(--bg); color: var(--muted); font-weight: 600; }
details > summary h2 { display: inline; }
#bank button { padding: 2px 8px; font-size: .8rem; }
#bankFeedback.bad, #helpFeedback.bad { color: var(--bad); }
#bankFeedback.ok { color: var(--ok); }
#helpFeedback.help { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 8px 12px; }
#helpFeedback.help p { margin: 6px 0; }

[hidden] { display: none !important; }