:root {
  --bg: #f6f5f2;
  --fg: #1d1d1f;
  --muted: #6b6b70;
  --card: #ffffff;
  --line: #e2e0da;
  --accent: #3355dd;
  --ok: #1d8a4a;
  --bad: #c0392b;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --fg: #ececee;
    --muted: #9a9aa2;
    --card: #1e1e22;
    --line: #2e2e34;
    --accent: #7c95ff;
    --ok: #4cc27c;
    --bad: #ff6b5b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 32rem; margin: 0 auto; padding: 1rem 1rem 3rem; }
h1 { font-size: 1.5rem; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; }
a { color: var(--accent); }
nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
nav a, .linkbtn { font-size: 0.95rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem; margin: 0.75rem 0; }
.muted { color: var(--muted); font-size: 0.9rem; }
.big-links { display: grid; gap: 0.75rem; }
.big-links a {
  display: block; padding: 1.1rem; text-align: center; font-size: 1.15rem; font-weight: 600;
  background: var(--accent); color: #fff; border-radius: 12px; text-decoration: none;
}
form { display: grid; gap: 0.75rem; }
label { display: grid; gap: 0.25rem; font-weight: 600; }
input[type="number"], input[type="password"], input[type="text"] {
  font: inherit; font-size: 1.3rem; padding: 0.7rem 0.8rem; min-height: 48px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--fg); width: 100%;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.radios { display: grid; gap: 0.5rem; border: 0; padding: 0; margin: 0; }
.radios label { display: flex; align-items: center; gap: 0.5rem; font-weight: 400; min-height: 44px; }
.radios input { width: 1.3rem; height: 1.3rem; }
button {
  font: inherit; font-size: 1.15rem; font-weight: 600; min-height: 52px; padding: 0.7rem 1rem;
  border: 0; border-radius: 12px; background: var(--accent); color: #fff; cursor: pointer;
}
button:disabled { opacity: 0.5; }
button.danger { background: var(--bad); }
.linkbtn { background: none; color: var(--accent); min-height: 44px; padding: 0; font-weight: 400; text-decoration: underline; }
.error { color: var(--bad); min-height: 1.4em; margin: 0; }
.result { font-size: 2.6rem; font-weight: 800; text-align: center; margin: 0.5rem 0; min-height: 3.2rem; }
.result.hit { color: var(--ok); }
.result.miss { color: var(--bad); }
.secret { font-size: 3rem; font-weight: 800; text-align: center; letter-spacing: 0.04em; margin: 0.25rem 0; }
.log { list-style: none; padding: 0; margin: 0; }
.log li { padding: 0.45rem 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 1rem; }
.log li:first-child { border-top: 0; }
.log time { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.fp { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.78rem; word-break: break-all; }
.verified { color: var(--ok); font-weight: 600; }
.unverified { color: var(--bad); font-weight: 600; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 0.6rem 1rem; margin: 0.5rem 0; }
summary { cursor: pointer; min-height: 32px; }
[hidden] { display: none !important; }