:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1a1d23;
  --muted: #5b6270;
  --line: #dfe3ea;
  --field: #fbfcfd;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --accent-soft: #e8efff;
  --ok: #157347;
  --err: #b42318;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1a1f26;
    --text: #e8ebf0;
    --muted: #a0a8b6;
    --line: #2c333d;
    --field: #141820;
    --accent: #7aa5ff;
    --accent-text: #0b1220;
    --accent-soft: #1f2c47;
    --ok: #5cc28f;
    --err: #ff8a7a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
a { color: var(--accent); }
.lede { color: var(--muted); max-width: 62ch; margin: 0 0 24px; }

.layout { display: grid; gap: 16px; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 900px) { .layout { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); } }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }

label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 12px; }
.opt { font-weight: 400; color: var(--muted); margin-left: 4px; font-size: .85rem; }
input, select {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
  font: inherit; font-weight: 400; color: inherit;
  background: var(--field); border: 1px solid var(--line); border-radius: 8px;
}
input:focus-visible, select:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.row { display: grid; gap: 0 12px; grid-template-columns: 1fr; }
@media (min-width: 520px) { .row { grid-template-columns: 1fr 1fr; } }

fieldset { border: 0; padding: 0; margin: 0 0 12px; }
legend { font-weight: 600; font-size: .92rem; margin-bottom: 6px; padding: 0; }
.choices { display: flex; gap: 16px; flex-wrap: wrap; }
.choices label, .check { display: inline-flex; align-items: center; gap: 6px; font-weight: 400; margin: 0; }
.check { margin-bottom: 12px; }
.choices input, .check input { width: auto; margin: 0; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
button {
  font: inherit; font-weight: 600; padding: 10px 16px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text);
}
button.secondary { background: transparent; color: var(--accent); }
button.small { padding: 6px 10px; font-size: .85rem; }
button:disabled { opacity: .6; cursor: default; }

#output { display: grid; gap: 12px; }
.empty { color: var(--muted); margin: 0; }
.when {
  display: inline-block; background: var(--accent-soft); border-radius: 999px;
  padding: 2px 10px; font-size: .85rem; font-weight: 600;
}
.date { color: var(--muted); font-size: .9rem; margin-left: 8px; }
.step p { margin: 0; }
.subject { font-weight: 700; margin: 12px 0 6px !important; }
.body { white-space: pre-wrap; overflow-wrap: anywhere; margin-bottom: 12px !important; }
.copies { display: flex; gap: 8px; flex-wrap: wrap; }
.tip { border-style: dashed; }
.tip p { margin: 0 0 12px; }

.early { margin-top: 24px; }
.early > p { max-width: 70ch; }
.small { font-size: .85rem; color: var(--muted); }
.status { min-height: 1.5em; font-weight: 600; margin: 0; }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.more { margin-top: 24px; }
.crumbs { font-size: .9rem; color: var(--muted); margin: 0 0 12px; }
.article { margin-bottom: 24px; }
.article h2 { margin-top: 24px; }
.article p, .article li { max-width: 70ch; }
.article ul { padding-left: 20px; }
.sample {
  white-space: pre-wrap; overflow-wrap: anywhere; padding: 16px; font-size: .95rem;
  background: var(--field); border: 1px solid var(--line); border-radius: 8px;
}
.section-title { font-size: 1.3rem; margin: 0 0 4px; }
.related { margin-top: 24px; }
ul.links {
  list-style: none; padding: 0; margin: 0 0 12px; display: grid; gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

footer { margin-top: 32px; color: var(--muted); font-size: .85rem; }
[hidden] { display: none !important; }