:root {
  color-scheme: light dark;
  --page: #f6f4fb;
  --ink: #1d1a2b;
  --muted: #5d586f;
  --accent: #5b3fd9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --page: #15131f;
    --ink: #eceaf5;
    --muted: #a39fb8;
    --accent: #a892ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
main { width: 100%; max-width: 30rem; }
h1 { font-size: 1.5rem; line-height: 1.25; margin: 0 0 0.5rem; }
p { margin: 0 0 1.25rem; }
form { margin: 0 0 1.25rem; }
button {
  margin-top: 1rem;
  padding: 0.6rem 1rem;
  border: 0;
  border-radius: 0.5rem;
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
}
button:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.note { color: var(--muted); font-size: 0.875rem; }