:root {
  color-scheme: light dark;
  --bg: #f6f6f3;
  --fg: #1c1c1a;
  --muted: #6a6a64;
  --field: #ffffff;
  --line: #d9d9d2;
  --accent: #2d6a4f;
  --on-accent: #ffffff;
  --error: #b3261e;
  --ok: #2d6a4f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151514;
    --fg: #ececea;
    --muted: #a3a39c;
    --field: #1f1f1d;
    --line: #3a3a36;
    --accent: #79c29d;
    --on-accent: #10231a;
    --error: #f2b8b5;
    --ok: #79c29d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 34rem; margin: 0 auto; padding: 2.5rem 16px; }
h1 { font-size: 1.5rem; margin: 0 0 .5rem; }
.lead, .hint, .foot { color: var(--muted); }
.lead { margin: 0 0 1.5rem; }
code { font: .9em ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
.note { border-left: 3px solid var(--line); padding-left: .75rem; }
label { display: block; font-weight: 600; margin: 1.25rem 0 .35rem; }
.row { display: flex; gap: .5rem; }
input {
  flex: 1;
  min-width: 0;
  font: 16px ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: .7rem .8rem;
  color: var(--fg);
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 8px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.hint { font-size: .9rem; margin: .35rem 0 1rem; overflow-wrap: anywhere; }
button {
  font: inherit;
  font-weight: 600;
  padding: .7rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--on-accent);
  cursor: pointer;
}
button.quiet { background: transparent; color: var(--fg); border-color: var(--line); }
button:disabled { opacity: .6; cursor: default; }
#status { min-height: 1.5em; margin-top: 1.25rem; }
#status.error { color: var(--error); }
#status.ok { color: var(--ok); font-weight: 600; }
.foot { font-size: .85rem; margin-top: 3rem; }
.foot a { color: inherit; }