:root{color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;background:#0b0d14;color:#e8e8ee;font:16px/1.4 system-ui,sans-serif}
.card{width:min(360px,calc(100vw - 32px));padding:28px;background:#151926;border:1px solid #262c40;border-radius:12px}
h1{margin:0 0 18px;font-size:20px}
label{display:block;margin-bottom:6px;color:#aab}
input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid #39405a;background:#0b0d14;color:inherit;font:inherit}
button{margin-top:14px;width:100%;padding:10px;border:0;border-radius:8px;background:#e0a526;color:#111;font:600 16px system-ui;cursor:pointer}
button:disabled{opacity:.6}
#msg{min-height:1.4em;margin:12px 0 0;color:#ff8f8f}