:root{--bg:#eef2f7;--card:#fff;--text:#141820;--muted:#5b6472;--blue:#2563eb;--line:#d5dce6;--err:#b42318}
@media (prefers-color-scheme:dark){:root{--bg:#0f141c;--card:#171e29;--text:#e8edf4;--muted:#9aa5b5;--blue:#5b8cff;--line:#2c3646;--err:#ff8a7a}}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;padding:16px}
main{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:32px 28px}
.logo{width:56px;height:56px;border-radius:12px;background:var(--blue);color:#fff;font-weight:700;font-size:24px;display:flex;align-items:center;justify-content:center}
h1{margin:16px 0 4px;font-size:26px}
.untertitel{margin:0 0 24px;color:var(--muted)}
label{display:block;font-weight:600;margin-bottom:14px}
input{display:block;width:100%;margin-top:6px;padding:10px 12px;font:inherit;border:1px solid var(--line);border-radius:8px;background:transparent;color:inherit}
input:focus{outline:2px solid var(--blue);outline-offset:1px}
button{width:100%;padding:11px;font:inherit;font-weight:600;color:#fff;background:var(--blue);border:0;border-radius:8px;cursor:pointer;margin-top:4px}
.fehler{color:var(--err);margin:0 0 12px}
.hinweis{font-size:14px;color:var(--muted);margin:22px 0 0;border-top:1px solid var(--line);padding-top:16px}
.hinweis strong{color:var(--text)}