:root {
  --bg: #faf7f0; --card: #ffffff; --text: #2a2520; --muted: #6f665c; --border: #e6dfd2;
  --accent: #b8860b; --accent-text: #ffffff; --error: #b3261e; --ok: #2e7d32;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1b1916; --card: #26231f; --text: #f1ece4; --muted: #a89f93; --border: #3a352f;
    --accent: #e0b04a; --accent-text: #1b1916; --error: #ff8a80; --ok: #81c784; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 24px 16px 120px; }
h1 { margin: 0 0 4px; font-size: 1.6rem; }
h2 { margin: 0 0 4px; font-size: 1.2rem; }
a { color: var(--accent); }
.muted { color: var(--muted); margin: 4px 0 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
label { display: block; margin: 12px 0; font-weight: 600; }
input { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit;
  color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; }
button { font: inherit; cursor: pointer; }
.primary { background: var(--accent); color: var(--accent-text); border: 0; border-radius: 8px;
  padding: 10px 20px; font-weight: 600; }
.primary:disabled { opacity: .5; cursor: default; }
.link { background: none; border: 0; color: var(--accent); text-decoration: underline; padding: 0; }
.error { color: var(--error); }
.who-bar { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.products { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 8px 0 12px;
  position: sticky; top: 0; background: var(--bg); z-index: 1; }
.tab { flex: 1; background: none; border: 0; border-bottom: 3px solid transparent; color: var(--muted);
  padding: 12px 8px 9px; font-weight: 600; display: inline-flex; justify-content: center; align-items: center; gap: 6px; }
.tab[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tab-count { background: var(--accent); color: var(--accent-text); border-radius: 999px; font-size: .75rem;
  min-width: 1.5em; padding: 1px 6px; }
.category { font-size: .9rem; }
.product { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.product.unavailable { opacity: .55; }
.product-head { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.product-head a { color: var(--text); font-weight: 600; text-decoration: none; }
.product-head a:hover { text-decoration: underline; }
.badge { font-size: .8rem; color: var(--muted); white-space: nowrap; }
.sku { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; gap: 8px; }
.sku-label { color: var(--muted); }
.stepper { display: flex; align-items: center; gap: 4px; }
.stepper button { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: 1.2rem; line-height: 1; }
.stepper button:disabled { opacity: .35; cursor: default; }
.stepper output { min-width: 2ch; text-align: center; font-weight: 600; font-variant-numeric: tabular-nums; }
.footer-bar { position: fixed; left: 0; right: 0; bottom: 0; background: var(--card); border-top: 1px solid var(--border);
  padding: 12px max(16px, calc((100vw - 608px) / 2)); display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.summary { display: flex; flex-direction: column; font-variant-numeric: tabular-nums; }
.summary span { color: var(--muted); font-size: .9rem; }
.total-line { display: flex; align-items: baseline; gap: 6px; }
.group-info { margin-top: 16px; }
.status { min-height: 1.5em; }
.status.ok { color: var(--ok); }
.status.err { color: var(--error); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
td.num, th.num { text-align: right; }
.scroll { overflow-x: auto; }