:root{--bg:#0b0f14;--panel:#121821;--text:#e6edf3;--muted:#9fb0c0;--accent:#4c8bf5;--danger:#ff6b6b;--user:#1e2a3a;--assistant:#182b1f;--error:#321616}#__next,body,html{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica Neue,Arial,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol;color:var(--text);background:radial-gradient(1200px 800px at 10% -10%,#142033 0,#0b0f14 60%)}.container{min-height:100%;display:flex;flex-direction:column}.chat{flex:1 1;max-width:900px;width:100%;margin:0 auto;padding:24px 16px 8px}h1{font-size:22px;font-weight:700;margin:0 0 16px}.messages{background:var(--panel);border:1px solid hsla(0,0%,100%,.06);border-radius:12px;padding:12px;height:calc(100vh - 260px);overflow-y:auto}.empty{color:var(--muted);text-align:center;margin-top:24px}.bubble{display:inline-block;max-width:85%;margin:8px 0;padding:10px 12px;border-radius:12px;line-height:1.5;box-shadow:0 1px 0 rgba(0,0,0,.2)}.bubble .role{font-size:12px;color:var(--muted);margin-bottom:4px}.bubble.user{background:var(--user)}.bubble.assistant{background:var(--assistant)}.bubble.error{background:var(--error);border:1px solid hsla(0,100%,71%,.35)}.composer{display:flex;gap:8px;margin-top:12px}.composer input{flex:1 1;background:var(--panel);border:1px solid hsla(0,0%,100%,.08);color:var(--text);border-radius:10px;padding:12px 14px;outline:none}.composer input:disabled{opacity:.6}.composer button{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:12px 16px;font-weight:600;cursor:pointer}.composer button:disabled{opacity:.6;cursor:not-allowed}.typing{margin-top:6px;font-size:13px}.typing,footer{color:var(--muted)}footer{max-width:900px;margin:0 auto;width:100%;padding:8px 16px 20px}code{color:#b2c7ff}