:root { color-scheme: light dark; --bg: #f6f4ef; --fg: #1f1d1a; --card: #fff; --line: #d9d4ca; --accent: #b5533c; }
@media (prefers-color-scheme: dark) { :root { --bg: #1b1917; --fg: #f1ede6; --card: #262320; --line: #3a3531; --accent: #e1735a; } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px; background: var(--bg); color: var(--fg); font: 16px/1.45 system-ui, -apple-system, Segoe UI, sans-serif; }
.card { width: min(420px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 28px 24px; }
h1 { margin: 0 0 4px; font-size: 22px; } p { margin: 8px 0; } .muted { opacity: .7; font-size: 14px; }
label { display: block; margin: 14px 0 6px; font-weight: 600; font-size: 14px; }
input, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: inherit; font: inherit; }
button { margin-top: 16px; width: 100%; padding: 11px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
button:disabled { opacity: .6; cursor: default; } .error { color: #c33; } .hidden { display: none; } a { color: var(--accent); }