:root {
  --bg: #ffffff;
  --text: #1c1b18;
  --muted: #5f5c55;
  --border: #d9d6cc;
  --field: #faf9f6;
  --ok: #15803d;
  --ko: #b91c1c;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161614;
    --text: #ecebe6;
    --muted: #a3a097;
    --border: #3a3934;
    --field: #1f1f1c;
    --ok: #4ade80;
    --ko: #f87171;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 var(--sans); }
main { max-width: 44rem; margin: 0 auto; padding: 2rem 1rem 4rem; }
h1 { font-size: 1.6rem; margin: 0 0 .5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 .5rem; }
code { font-family: var(--mono); font-size: .9em; overflow-wrap: anywhere; }

label { display: block; font-weight: 600; margin: 1.5rem 0 .4rem; }
textarea {
  width: 100%; padding: .6rem; font: .85rem/1.4 var(--mono); color: var(--text);
  background: var(--field); border: 1px solid var(--border); border-radius: 6px; resize: vertical;
  word-break: break-all;
}
button {
  margin-top: .6rem; padding: .5rem 1.2rem; font: inherit; font-weight: 600; cursor: pointer;
  color: var(--bg); background: var(--text); border: 0; border-radius: 6px;
}
button:disabled { opacity: .4; cursor: default; }

#result { margin-top: 1.5rem; padding: 0 1rem 1rem; border: 1px solid var(--border); border-radius: 6px; }
.ok { color: var(--ok); }
.ko { color: var(--ko); }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .6rem 1rem; margin: 0; }
dt { font-weight: 600; }
dd { margin: 0; min-width: 0; }
.value { overflow-wrap: anywhere; }
dd small { display: block; color: var(--muted); }
@media (max-width: 30rem) {
  dl { grid-template-columns: 1fr; gap: .2rem; }
  dd { margin-bottom: .6rem; }
}

#about { color: var(--muted); }
#about h2 { color: var(--text); }
.fingerprint { display: block; padding: .5rem; background: var(--field); border-radius: 6px; }
#noscript { color: var(--ko); }