:root{--bg:#0b0d10;--card:#13161b;--line:#232830;--text:#e8eaed;--muted:#8b93a1;--accent:#d97757;--err:#f87171}
@media (prefers-color-scheme: light){:root{--bg:#f6f5f2;--card:#fff;--line:#e4e1da;--text:#1b1d21;--muted:#6b7280}}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 Inter,system-ui,-apple-system,Segoe UI,sans-serif;display:grid;place-items:center;padding:16px;
background-image:radial-gradient(600px 300px at 20% 10%,rgba(217,119,87,.12),transparent),radial-gradient(500px 300px at 80% 90%,rgba(99,102,241,.10),transparent)}
.card{width:100%;max-width:380px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.logo{display:flex;align-items:center;gap:10px;font-weight:650;font-size:17px;margin-bottom:22px}.logo img{width:30px;height:30px}
h1{font-size:22px;margin:0 0 6px;font-weight:650}p{margin:0 0 22px;color:var(--muted);font-size:14px}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit;outline:none}
input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(217,119,87,.2)}
button{width:100%;margin-top:16px;padding:12px;border:0;border-radius:10px;background:var(--accent);color:#fff;font:600 15px Inter,system-ui,sans-serif;cursor:pointer}
button:disabled{opacity:.6;cursor:default}.err{color:var(--err);font-size:13px;min-height:20px;margin-top:10px}