:root{--bg:#0b0f17;--card:#141b28;--line:#232d40;--txt:#e6ebf2;--muted:#93a1b5;--accent:#38bdf8;--green:#10b981}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.panel{display:flex;flex-direction:column;height:100vh;max-width:760px;margin:0 auto;padding:16px;gap:12px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:var(--card);border:1px solid var(--line);border-radius:12px}.topbar h1{font-size:18px}.topbar .sub{color:var(--muted);font-size:12.5px}.dot{color:var(--green);font-size:12.5px}.chat{flex:1 1;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:8px 2px}.empty{color:var(--muted);text-align:center;margin-top:40px;font-size:14px}.msg{display:flex}.msg.user{justify-content:flex-end}.msg.assistant{justify-content:flex-start}.bubble{max-width:80%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;white-space:pre-wrap}.msg.user .bubble{background:var(--accent);color:#04121c}.msg.assistant .bubble{background:var(--card);border:1px solid var(--line)}.inputbar{display:flex;gap:8px}.inputbar input{flex:1 1;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--txt);font-size:14px;outline:none}.inputbar input:focus{border-color:var(--accent)}.inputbar button{padding:12px 18px;border-radius:10px;border:none;background:var(--accent);color:#04121c;font-weight:600;cursor:pointer}.inputbar button:disabled{opacity:.5;cursor:not-allowed}.topbar-right{display:flex;align-items:center;gap:12px}.logout{padding:6px 12px;border-radius:8px;border:1px solid var(--line);background:transparent;color:var(--muted);font-size:12.5px;cursor:pointer}.logout:hover{color:var(--txt);border-color:var(--accent)}.login{display:flex;align-items:center;justify-content:center;height:100vh;padding:16px}.login form{width:100%;max-width:360px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:12px}.login h1{font-size:20px}.login .sub{color:var(--muted);font-size:13.5px}.login input{padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--txt);font-size:14px;outline:none}.login input:focus{border-color:var(--accent)}.login button{padding:12px;border-radius:10px;border:none;background:var(--accent);color:#04121c;font-weight:600;cursor:pointer}.login button:disabled{opacity:.5;cursor:not-allowed}.login .err{color:#f87171;font-size:13px}