:root { --bg: #f6f3ee; --card: #ffffff; --ink: #1d1b18; --muted: #6b665e; --line: #e4ded4; --accent: #b4532a; --accent-ink: #ffffff; --error: #b3261e; --focus: #1d4ed8; color-scheme: light dark; }
@media (prefers-color-scheme: dark) { :root { --bg: #171614; --card: #22201d; --ink: #f2efe9; --muted: #a8a196; --line: #36332e; --accent: #e07a4f; --accent-ink: #1d1b18; --error: #ff8a80; --focus: #93b4ff; } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--bg); color: var(--ink); font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; padding: 24px 16px; }
main { width: 100%; max-width: 400px; }
h1 { font: 600 28px/1.2 ui-serif, Georgia, serif; margin: 0 0 4px; letter-spacing: -0.01em; }
.sub { color: var(--muted); margin: 0 0 24px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-size: 14px; color: var(--muted); }
input { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px; width: 100%; }
input:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
input.code { font-size: 24px; letter-spacing: 0.4em; text-align: center; font-variant-numeric: tabular-nums; }
button { font: inherit; cursor: pointer; border-radius: 10px; padding: 12px 14px; border: 1px solid var(--line); background: var(--card); color: var(--ink); }
button[type=submit], .primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button:disabled { opacity: 0.6; cursor: wait; }
.link { background: none; border: none; padding: 4px 0; color: var(--accent); text-align: left; }
.row { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.social { display: grid; gap: 8px; }
.or { text-align: center; color: var(--muted); font-size: 14px; margin: 4px 0; }
.error { color: var(--error); margin: 0; }
.note { color: var(--muted); font-size: 14px; margin: 0; }
footer { color: var(--muted); font-size: 13px; margin-top: 20px; text-align: center; }