:root{--bg: #f5f6f4;--card: #ffffff;--ink: #1d211f;--muted: #5c6360;--line: #d8dcd9;--accent: #1f6f54;--accent-ink: #ffffff;--danger: #a33232;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #171a18;--card: #212522;--ink: #e8ebe9;--muted: #9aa39e;--line: #3a403c;--accent: #4fa583;--accent-ink: #10231b;--danger: #e08585}}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--ink)}.shell{min-height:100dvh;display:grid;place-items:center;padding:1.5rem}.card{width:100%;max-width:22rem;background:var(--card);border:1px solid var(--line);border-radius:6px;padding:2rem;display:flex;flex-direction:column;gap:1rem}.brand{font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}h1{margin:0;font-size:1.35rem;font-weight:650;text-wrap:balance}.subtitle{margin:0;font-size:.9rem;line-height:1.5;color:var(--muted)}form{display:flex;flex-direction:column;gap:1rem}label{display:flex;flex-direction:column;gap:.35rem;font-size:.85rem;font-weight:550}input{font:inherit;padding:.55rem .7rem;border:1px solid var(--line);border-radius:4px;background:var(--bg);color:var(--ink)}input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}button{font:inherit;font-weight:600;padding:.6rem;border:none;border-radius:4px;background:var(--accent);color:var(--accent-ink);cursor:pointer}button:disabled{opacity:.6;cursor:wait}button.secondary{background:transparent;border:1px solid var(--line);color:var(--ink);align-self:flex-start}.error{margin:0;font-size:.85rem;line-height:1.4;color:var(--danger)}.greeting{margin:.5rem 0;font-size:1.5rem;font-weight:650}