:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #16181d;
  --muted: #5d6470;
  --border: #e2e5ea;
  --accent: #d42114;
  --accent-text: #ffffff;
  --ok: #137a3f;
  --ok-bg: #e6f4ec;
  --bad: #b42318;
  --bad-bg: #fdecea;
  --warn: #8a5a00;
  --warn-bg: #fff4dc;
  --code-bg: #f1f3f6;
  --radius: 12px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #171a20;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --border: #2a2f38;
    --accent: #ff5a4f;
    --accent-text: #16181d;
    --ok: #5fd08f;
    --ok-bg: #12301f;
    --bad: #ff8a80;
    --bad-bg: #3a1714;
    --warn: #f3c060;
    --warn-bg: #352a10;
    --code-bg: #10131a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.top, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.top { padding-top: 24px; }
h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.05rem; margin: 0; }
footer { padding-bottom: 32px; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; overflow-wrap: anywhere; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0;
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

.row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 0; }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}
.btn:hover:not(:disabled) { border-color: var(--muted); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }

.field { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--muted); flex: 1 1 220px; margin-top: 12px; }
.field.narrow { flex: 0 0 90px; }
.check { display: flex; gap: 8px; align-items: center; margin-top: 12px; font-size: 0.9rem; }
.check input { width: 20px; height: 20px; min-height: 0; margin: 0; accent-color: var(--accent); }
input, select, textarea {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  width: 100%;
  min-height: 40px;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85rem; resize: vertical; }

.tab { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; }
.tab .btn { margin-top: 12px; }
.tabs { display: flex; gap: 4px; margin-top: 12px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tabs button {
  appearance: none; background: none; border: none; color: var(--muted);
  font: inherit; font-weight: 600; padding: 8px 12px; cursor: pointer;
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }

.pill { font-size: 0.8rem; font-weight: 600; padding: 2px 10px; border-radius: 999px; background: var(--code-bg); color: var(--muted); }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }

.checks { list-style: none; padding: 0; margin: 12px 0 0; }
.checks li { border-top: 1px solid var(--border); padding: 10px 0; }
.checks .line { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.checks .name { font-weight: 600; }
.checks .detail { color: var(--muted); font-size: 0.85rem; margin-top: 4px; overflow-wrap: anywhere; }

.claims { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 12px 0 0; font-size: 0.85rem; }
.claims dt { color: var(--muted); }
.claims dd { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.claims .bad { color: var(--bad); }

.paste { margin-top: 12px; }
.paste summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }
.paste textarea { margin: 8px 0; }

.msg { margin: 12px 0 0; font-size: 0.9rem; overflow-wrap: anywhere; }
.msg.bad { color: var(--bad); }
.msg.ok { color: var(--ok); }

.code {
  background: var(--code-bg);
  border-radius: 8px;
  padding: 12px;
  margin: 12px 0 0;
  overflow: auto;
  max-height: 480px;
  font-size: 0.8rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.product-text {
  margin: 12px 0 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.9rem;
}
.product-text.error { border-color: var(--bad); color: var(--bad); }