:root{--bg:#0b1220;--card:#121a2c;--txt:#e7efff;--mut:#93a4c7;--a:#39ffd1;--b:#7aa7ff;--danger:#ff5c7a}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto;background:radial-gradient(900px 600px at 20% -10%, rgba(57,255,209,.25), transparent), radial-gradient(900px 600px at 80% 0%, rgba(122,167,255,.22), transparent), var(--bg);color:var(--txt)}
.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.card{background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.08);border-radius:18px;padding:22px;max-width:360px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.45)}
h1{margin:0 0 16px;font-size:28px;letter-spacing:.4px}
input,select{width:100%;padding:12px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.22);color:var(--txt);outline:none;margin:8px 0}
button{width:100%;padding:12px;border-radius:12px;border:0;background:linear-gradient(90deg,var(--a),var(--b));color:#081225;font-weight:800;cursor:pointer;margin-top:10px}
.error{color:var(--danger);margin:10px 0 0}
a{color:var(--a);text-decoration:none}