:root {
  color-scheme: light dark;
  --bg: #f6f5f2;
  --fg: #1c1b19;
  --muted: #5d5a54;
  --card: #ffffff;
  --border: #d6d3cc;
  --accent: #8a4b12;
  --error: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161514;
    --fg: #ecebe8;
    --muted: #a8a49c;
    --card: #211f1d;
    --border: #3a3733;
    --accent: #e0a060;
    --error: #ff8a80;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
}
main {
  width: min(22rem, 100% - 2rem);
  padding: 2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
}
h1 { font-size: 1.25rem; margin: 0 0 1.5rem; }
form { display: grid; gap: 0.75rem; }
label { color: var(--muted); font-size: 0.9rem; }
input {
  font: inherit;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
}
input:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button {
  font: inherit;
  font-weight: 600;
  padding: 0.6rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--card);
  cursor: pointer;
}
#error { margin: 0; color: var(--error); }