:root {
  --bg: #f5f6f4;
  --card: #ffffff;
  --text: #1f2a2b;
  --muted: #5b6667;
  --accent: #2f5d62;
  --border: #d5dad8;
  --error: #b3261e;
  --ok: #2e7d32;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151a1b;
    --card: #1e2526;
    --text: #e8eceb;
    --muted: #a3adac;
    --accent: #7fb3b8;
    --border: #3a4445;
    --error: #ff8a80;
    --ok: #81c784;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  padding: 24px 16px;
}
.card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
h1 { font-size: 1.5rem; margin: 0 0 8px; }
h2 { font-size: 1.2rem; }
.offer { color: var(--accent); font-weight: 600; margin: 0 0 20px; }
label { display: block; margin-bottom: 16px; font-weight: 600; }
label small { font-weight: 400; color: var(--muted); }
input, select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.slug-row { display: flex; align-items: center; gap: 6px; }
.slug-row input { flex: 1; min-width: 0; }
.suffix { color: var(--muted); font-weight: 400; margin-top: 6px; white-space: nowrap; }
.hint { display: block; font-weight: 400; color: var(--muted); margin-top: 4px; }
.hint.ok { color: var(--ok); }
.hint.bad, .error { color: var(--error); }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
.check input { width: auto; margin-top: 4px; }
a { color: var(--accent); }
button {
  width: 100%;
  padding: 12px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button[disabled] { opacity: .6; cursor: wait; }
.legal h1 { font-size: 1.4rem; }