:root{--bg:#0f1220;--fg:#e8ecf5;--ac:#5b8cff}body{margin:0;font:16px/1.5 system-ui,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg)}.auth{max-width:360px;margin:12vh auto;padding:24px}h1{font-size:1.5rem;margin:0 0 8px}input,button{width:100%;padding:10px;margin:6px 0;border-radius:8px;border:1px solid #2a2f45;background:#171a2b;color:var(--fg)}button{background:var(--ac);border:0;font-weight:600;cursor:pointer}.muted{color:#8a90a8;font-size:.85rem}