:root{--violett: #7c3aed;--grund: #12121a;--karte: #1c1c28;--rand: #2c2c3c;--schrift: #e8e8f0;--gedaempft: #9a9ab0}*{box-sizing:border-box}body{margin:0;background:var(--grund);color:var(--schrift);font-family:system-ui,-apple-system,Segoe UI,sans-serif;font-size:16px}button{background:var(--violett);color:#fff;border:0;border-radius:8px;padding:.7rem 1.2rem;font-size:1rem;cursor:pointer}button:disabled{opacity:.5;cursor:default}input{background:var(--karte);color:var(--schrift);border:1px solid var(--rand);border-radius:8px;padding:.7rem .9rem;font-size:1rem}input:focus{outline:2px solid var(--violett)}.laedt,.anmeldung{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem}.anmeldung h1{margin:0;font-size:2rem;letter-spacing:.05em}.fehler{color:#f87171;margin:0}.chat{max-width:780px;margin:0 auto;height:100vh;display:flex;flex-direction:column;padding:1rem}.chat header{display:flex;align-items:center;justify-content:space-between;padding-bottom:1rem;border-bottom:1px solid var(--rand)}.chat header h1{margin:0;font-size:1.3rem}.chat header button{background:transparent;color:var(--gedaempft);padding:.4rem .6rem}.verlauf{flex:1;overflow-y:auto;padding:1rem 0;display:flex;flex-direction:column;gap:.9rem}.nachricht{max-width:85%;padding:.7rem 1rem;border-radius:12px;background:var(--karte);border:1px solid var(--rand)}.nachricht p{margin:0;white-space:pre-wrap;line-height:1.5}.nachricht.user{align-self:flex-end;background:var(--violett);border-color:var(--violett)}.nachricht.assistant{align-self:flex-start}.nachricht.system{align-self:center;border-color:#f87171;color:#f87171}.nachricht.denkt{color:var(--gedaempft);font-style:italic}.werkzeuge{display:block;margin-top:.4rem;font-size:.8rem;color:var(--gedaempft)}.wartet{display:block;margin-top:.4rem;font-size:.8rem;font-style:italic;color:var(--violett)}.chat form{display:flex;gap:.6rem;padding-top:.8rem;border-top:1px solid var(--rand)}.chat form input{flex:1}