body{margin:0;font-family:system-ui,Segoe UI,Roboto,sans-serif;background:#0f1220;color:#e6e8f0;display:flex;min-height:100vh;align-items:center;justify-content:center}
.card{background:#1a1e33;padding:32px;border-radius:14px;box-shadow:0 8px 40px rgba(0,0,0,.4);width:320px}
h1{font-size:20px;margin:0 0 4px}.sub{color:#8b90a8;font-size:13px;margin-bottom:20px}
input{width:100%;box-sizing:border-box;padding:12px;border-radius:8px;border:1px solid #2c3252;background:#0f1220;color:#fff;font-size:15px}
button{width:100%;margin-top:12px;padding:12px;border:0;border-radius:8px;background:#5b6cff;color:#fff;font-size:15px;font-weight:600;cursor:pointer}
.err{color:#ff6b6b;font-size:13px;margin-top:10px;min-height:18px}