:root {
  color-scheme: light;
  --bg: #eef3f8;
  --card: #ffffff;
  --text: #102033;
  --muted: #5c6b7c;
  --line: #d9e3ee;
  --primary: #1769ff;
  --danger: #b42318;
  --good: #07815c;
  --bad: #b42318;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #ffffff 0, var(--bg) 42%, #e7eef7 100%);
  color: var(--text);
}
.shell { width: min(1180px, calc(100% - 32px)); margin: 32px auto; }
.hero, .card {
  background: rgba(255,255,255,.88);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(19, 40, 70, .10);
}
.hero {
  padding: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 18px;
}
.eyebrow { margin: 0 0 8px; color: var(--primary); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: 12px; }
h1 { margin: 0; font-size: clamp(34px, 5vw, 58px); line-height: .95; }
h2 { margin: 0 0 18px; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.card { padding: 24px; }
label { display: block; margin: 14px 0 7px; font-weight: 750; }
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  font: inherit;
  background: #fbfdff;
}
button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font-weight: 800;
  cursor: pointer;
}
button:disabled { opacity: .55; cursor: wait; }
.primary { background: var(--primary); color: white; padding: 14px 20px; }
.secondary { background: #102033; color: white; margin-top: 16px; }
.ghost { background: #edf3fb; color: var(--text); }
.danger { background: #fff0ef; color: var(--danger); }
details { margin-top: 14px; }
summary { cursor: pointer; color: var(--muted); font-weight: 750; }
.domain-add { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 10px; align-items: center; }
.check { display: flex; align-items: center; gap: 8px; margin: 0; }
.check input { width: auto; }
.list { margin-top: 16px; display: grid; gap: 10px; }
.item, .status-row, .row { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.item, .status-row { border: 1px solid var(--line); border-radius: 16px; padding: 14px; background: #fbfdff; }
.item span, .status-row span { display: block; color: var(--muted); margin-top: 3px; }
.status { display: grid; gap: 10px; margin-top: 16px; }
.status-row.good { border-left: 5px solid var(--good); }
.status-row.fail { border-left: 5px solid var(--bad); }
code { color: var(--muted); max-width: 45%; overflow-wrap: anywhere; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  padding: 14px 18px;
  border-radius: 999px;
  font-weight: 850;
  box-shadow: 0 20px 70px rgba(0,0,0,.18);
}
.toast.ok { background: #e8fff5; color: var(--good); }
.toast.bad { background: #fff0ef; color: var(--bad); }
.hidden { display: none; }
@media (max-width: 820px) {
  .hero, .grid { display: block; }
  .hero .primary { margin-top: 20px; width: 100%; }
  .grid .card { margin-bottom: 18px; }
  .domain-add { grid-template-columns: 1fr; }
  code { max-width: 100%; }
  .item, .status-row, .row { align-items: flex-start; flex-direction: column; }
}