:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #5d6673;
  --accent: #2563eb;
  --ok: #15803d;
  --bad: #b91c1c;
  --border: #d9dde3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1b2027;
    --text: #e8ebef;
    --muted: #9aa4b1;
    --accent: #60a5fa;
    --ok: #4ade80;
    --bad: #f87171;
    --border: #2d343e;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 16px;
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 640px;
  margin-inline: auto;
}
h1 { font-size: 1.4rem; margin: 0 0 12px; }
h2 { font-size: 1.1rem; margin: 0 0 8px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
}
.muted { color: var(--muted); font-size: 0.9rem; }
.ok { color: var(--ok); font-weight: 600; }
.bad { color: var(--bad); font-weight: 600; }
.big { font-size: 1.6rem; font-weight: 700; }
button, .button {
  display: inline-block;
  font: inherit;
  padding: 12px 16px;
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  margin: 4px 4px 4px 0;
}
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
input, select, textarea {
  font: inherit;
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  margin: 4px 0 10px;
}
label { display: block; font-weight: 600; font-size: 0.95rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
td, th { border-bottom: 1px solid var(--border); padding: 6px 4px; text-align: left; vertical-align: top; }
code, pre { font-size: 0.8rem; word-break: break-all; white-space: pre-wrap; }
.radio-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 4px 0 10px; }
.radio-row label { font-weight: 400; border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; }

/* printable sticker sheet */
.sheet { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.label { border: 1px dashed var(--border); border-radius: 8px; padding: 10px; text-align: center; background: #fff; color: #000; }
.label .qr { display: flex; justify-content: center; margin: 6px 0; }
@media print {
  body { background: #fff; max-width: none; padding: 0; }
  .no-print { display: none !important; }
  .label { break-inside: avoid; }
}