:root{--bg:#0d1117;--side:#161b22;--panel:#11161d;--line:#2b313a;--text:#e6edf3;--muted:#8b949e;--blue:#2f81f7;--green:#3fb950;--bubble:#1b2533;--user:#12365f;--bar:#0969da;color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body,#app{height:100%;margin:0;background:var(--bg);color:var(--text)}button,select,textarea{font:inherit}.sidebar{width:280px;background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:240px}.brand{height:58px;display:flex;align-items:center;gap:10px;padding:0 16px;border-bottom:1px solid var(--line)}.brand .mark{display:grid;place-items:center;width:30px;height:30px;border:1px solid #74808d;border-radius:7px;font-weight:800}.brand div{display:flex;flex-direction:column;font-size:13px;letter-spacing:.12em}.brand small{font-size:8px;color:var(--muted)}.new-chat{margin:14px;border:1px solid var(--line);background:#202731;color:var(--text);padding:10px;border-radius:6px;text-align:left;cursor:pointer}.new-chat:hover{border-color:var(--blue)}.section-title{padding:8px 15px;color:var(--muted);font-size:11px;letter-spacing:.08em;display:flex;justify-content:space-between}.section-title button,.icon-btn{border:0;background:none;color:var(--muted);cursor:pointer}.sessions{overflow:auto;flex:1}.session{padding:10px 14px;border-left:2px solid transparent;cursor:pointer}.session:hover{background:#1c222b}.session.active{background:#202734;border-left-color:var(--blue)}.session b,.session small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session b{font-size:13px;font-weight:550}.session small{font-size:10px;color:var(--muted);margin-top:5px}.sidebar-footer{border-top:1px solid var(--line);padding:11px 15px;font-size:11px;color:var(--muted)}.dot{color:var(--green)}#app{display:flex}.workspace{min-width:0;flex:1;display:flex;flex-direction:column}.topbar{height:58px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 16px;gap:12px}.current{min-width:0;display:flex;flex-direction:column;flex:1}.current b,.current small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.current b{font-size:14px}.current small{font-size:10px;color:var(--muted);margin-top:3px}.topbar select{background:#1c222b;border:1px solid var(--line);color:var(--text);padding:7px 10px;border-radius:5px;max-width:170px}.icon-btn{display:none;font-size:20px}.limits{min-height:34px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:5px 18px;color:var(--muted);font-size:11px}.meter{width:80px;height:5px;background:#30363d;border-radius:4px;display:inline-block;margin:0 6px;overflow:hidden;vertical-align:middle}.meter i{display:block;height:100%;background:var(--green)}.chat{flex:1;overflow:auto;padding:26px max(18px,calc((100% - 900px)/2));scroll-behavior:smooth}.welcome{text-align:center;color:var(--muted);margin:12vh auto}.welcome .logo{font-size:38px;color:var(--blue)}.welcome h1{color:var(--text);font-size:26px;margin:12px}.message{max-width:82%;margin:0 0 18px;padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:var(--bubble);white-space:pre-wrap;line-height:1.5;font-size:14px}.message.user{margin-left:auto;background:var(--user);border-color:#23558b}.message .role{font-size:10px;color:var(--muted);letter-spacing:.07em;margin-bottom:7px}.activity-panel{max-height:180px;border-top:1px solid var(--line);background:var(--panel);overflow:hidden}.activity-panel.hidden{display:none}.activity-head{height:32px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;color:var(--muted);font-size:10px}.activity-head button{border:0;background:none;color:var(--muted);font-size:10px}.activity{overflow:auto;max-height:148px;padding:0 16px 10px;font:11px ui-monospace,SFMono-Regular,monospace;color:#a9b5c1}.activity-item{padding:4px 0;border-bottom:1px dotted #252c34}.activity-item.command{color:#79c0ff}.composer{display:flex;gap:10px;padding:14px max(18px,calc((100% - 900px)/2));border-top:1px solid var(--line)}.composer textarea{resize:none;max-height:150px;flex:1;border:1px solid #3b434d;border-radius:8px;background:#161b22;color:var(--text);padding:12px;outline:none}.composer textarea:focus{border-color:var(--blue)}.composer button{width:42px;height:42px;border:0;border-radius:7px;background:var(--blue);color:white;font-size:22px;cursor:pointer}.composer button:disabled{opacity:.45}.statusbar{height:23px;background:var(--bar);display:flex;align-items:center;justify-content:space-between;padding:0 10px;font-size:10px;color:white}.toast{position:fixed;left:50%;bottom:45px;transform:translateX(-50%);background:#b42318;color:white;padding:9px 14px;border-radius:6px;font-size:12px;display:none}.skeleton{padding:15px;color:var(--muted);font-size:12px}@media(max-width:720px){.sidebar{position:fixed;z-index:5;inset:0 auto 0 0;width:82%;transform:translateX(-100%);transition:.2s;box-shadow:5px 0 30px #000}.sidebar.open{transform:none}.icon-btn{display:block}.message{max-width:94%}.topbar select{max-width:125px}.limits{overflow-x:auto;white-space:nowrap}.chat{padding-top:18px}.composer{padding-top:10px;padding-bottom:calc(10px + env(safe-area-inset-bottom))}}