:root { --bg: #fff; --fg: #1d1d1f; --muted: #6e6e73; --card: #f5f5f7; --accent: #35103d; --danger: #d70015; --line: #d2d2d7; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #000; --fg: #f5f5f7; --muted: #a1a1a6; --card: #1c1c1e; --accent: #c9a6d1; --danger: #ff453a; --line: #38383a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 -apple-system, system-ui, "Segoe UI", Roboto, sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 1.8rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 28px 0 8px; }
.lead { color: var(--muted); }
.card { background: var(--card); border-radius: 16px; padding: 4px 20px 20px; margin-top: 24px; }
label { display: block; margin: 12px 0 4px; font-weight: 500; }
input { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit; color: var(--fg); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
.btn { display: block; width: 100%; margin-top: 14px; padding: 12px; font: inherit; font-weight: 600; color: #fff; background: var(--accent); border: 0; border-radius: 12px; cursor: pointer; }
@media (prefers-color-scheme: dark) { .btn { color: #000; } }
.btn.danger { background: var(--danger); color: #fff; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.link { margin-top: 12px; padding: 0; font: inherit; color: var(--accent); background: none; border: 0; cursor: pointer; text-decoration: underline; }
.warn { color: var(--danger); font-weight: 500; }
#status { min-height: 1.5em; margin: 16px 0 0; }
#status.error { color: var(--danger); }
a { color: var(--accent); }