:root{--bg: #f4f5f7;--panel: #ffffff;--ink: #1b1f24;--muted: #6b7280;--line: #e5e7eb;--accent: #4f46e5;--accent-ink: #ffffff;--assistant-bg: #eef0f4;--engine-bg: #f8fafc;--ok: #16a34a;--bad: #dc2626;--shadow: 0 6px 24px rgba(20, 24, 40, .08);--radius: 16px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--panel: #171a21;--ink: #e8eaed;--muted: #9aa3af;--line: #262b34;--accent: #6d64f0;--assistant-bg: #1f242d;--engine-bg: #14171d;--shadow: 0 6px 24px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--ink)}.app{height:100dvh;display:flex;flex-direction:row}.sidebar{flex:none;width:260px;display:flex;flex-direction:column;gap:8px;padding:14px 12px;background:var(--bg);border-right:1px solid var(--line)}.newchat{border:1px solid var(--line);background:var(--panel);color:var(--ink);padding:10px 12px;border-radius:12px;font-weight:650;font-size:14px;cursor:pointer;transition:transform .08s,filter .15s}.newchat:hover{transform:translateY(-1px);filter:brightness(1.03)}.chatlist{display:flex;flex-direction:column;gap:4px;overflow-y:auto}.chatrow{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:6px;padding:9px 10px;border-radius:10px;cursor:pointer;border:1px solid transparent;transition:background .12s}.chatrow:hover{background:color-mix(in srgb,var(--accent) 8%,transparent)}.chatrow.active{background:color-mix(in srgb,var(--accent) 14%,transparent);border-color:color-mix(in srgb,var(--accent) 30%,var(--line))}.chat-title{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-time{font-size:11px;color:var(--muted);white-space:nowrap}.chat-del{border:none;background:none;color:var(--muted);cursor:pointer;font-size:12px;opacity:0;padding:2px 4px;border-radius:6px}.chatrow:hover .chat-del,.chatrow.active .chat-del{opacity:1}.chat-del:hover{color:var(--bad);background:color-mix(in srgb,var(--bad) 12%,transparent)}.scrim{display:none}.hamburger{display:none;border:none;background:none;color:var(--ink);font-size:20px;cursor:pointer;padding:0 6px}.panel{flex:1;min-width:0;display:flex;flex-direction:column;max-width:900px;margin:0 auto;width:100%;background:var(--panel)}@media(max-width:640px){.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:20;width:82%;max-width:300px;transform:translate(-100%);transition:transform .22s ease;box-shadow:var(--shadow)}.sidebar.open{transform:translate(0)}.scrim{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:15;background:#0006}.hamburger{display:inline-block}}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--panel);position:sticky;top:0;z-index:3}.brand{display:flex;align-items:center;gap:10px;font-weight:650;letter-spacing:.2px}.brand-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#22d3ee);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent)}.pill{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--panel);color:var(--ink);padding:7px 13px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer;transition:transform .08s ease,background .2s}.pill:hover{transform:translateY(-1px)}.pill-dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.pill-ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,var(--line))}.pill-ok .pill-dot{background:var(--ok)}.pill-fail{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 40%,var(--line))}.pill-fail .pill-dot{background:var(--bad)}.artifacts{display:flex;flex-wrap:wrap;gap:6px;padding:8px 18px;border-bottom:1px solid var(--line);background:var(--engine-bg)}.chip{font-size:12px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:3px 10px}.timeline{flex:1;overflow-y:auto;padding:20px 18px 8px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth}.empty{margin:auto;text-align:center;color:var(--muted);max-width:340px}.empty-hint{font-size:13px}.row{display:flex;gap:10px;align-items:flex-end;max-width:100%}.row.user{justify-content:flex-end}.row.assistant{justify-content:flex-start}.avatar{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;letter-spacing:.5px;color:var(--accent-ink);background:linear-gradient(135deg,var(--accent),#22d3ee)}.bubble{position:relative;max-width:min(76%,560px);padding:10px 14px;border-radius:18px;line-height:1.45;display:flex;flex-direction:column;gap:3px;word-break:break-word;white-space:pre-wrap;box-shadow:var(--shadow)}.row.user .bubble{background:var(--accent);color:var(--accent-ink);border-bottom-right-radius:6px}.row.assistant .bubble{background:var(--assistant-bg);color:var(--ink);border-bottom-left-radius:6px}.who{font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}.engine{display:flex;align-items:center;gap:10px;align-self:center;width:100%;max-width:620px;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:12.5px;color:var(--muted);background:var(--engine-bg);border:1px dashed var(--line);border-left:3px solid var(--muted);border-radius:10px;padding:7px 12px}.engine.ok{border-left-color:var(--ok)}.engine.bad{border-left-color:var(--bad)}.engine .gear{font-size:13px;opacity:.8}.engine-tool{font-weight:700;color:var(--ink)}.engine-detail{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.engine-mark{font-weight:700}.engine.ok .engine-mark{color:var(--ok)}.engine.bad .engine-mark{color:var(--bad)}.typing{flex-direction:row;gap:5px;padding:13px 16px}.dot{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:blink 1.3s infinite ease-in-out}.dot:nth-child(2){animation-delay:.18s}.dot:nth-child(3){animation-delay:.36s}@keyframes blink{0%,80%,to{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}.composer{position:sticky;bottom:0;display:flex;gap:10px;align-items:flex-end;padding:12px 14px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--panel)}.input{flex:1;resize:none;max-height:140px;min-height:44px;padding:11px 14px;border:1px solid var(--line);border-radius:14px;background:var(--bg);color:var(--ink);font:inherit;font-size:15px;line-height:1.4;outline:none;transition:border-color .15s,box-shadow .15s}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%,transparent)}.send{flex:none;height:44px;padding:0 20px;border:none;border-radius:14px;background:var(--accent);color:var(--accent-ink);font-weight:650;font-size:15px;cursor:pointer;transition:filter .15s,transform .08s}.send:hover:not(:disabled){filter:brightness(1.07);transform:translateY(-1px)}.send:disabled{opacity:.5;cursor:not-allowed}.modeseg{display:inline-flex;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:2px;gap:2px}.modeseg button{border:none;background:none;color:var(--muted);cursor:pointer;padding:6px 12px;border-radius:999px;font-size:12.5px;font-weight:600;white-space:nowrap}.modeseg button.on{background:var(--panel);color:var(--accent);box-shadow:var(--shadow)}.review{border-top:1px solid var(--line);background:var(--engine-bg);padding:10px 14px;max-height:40vh;overflow-y:auto}.review-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.submit{border:none;background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:14px;padding:8px 16px;border-radius:12px;cursor:pointer;transition:filter .15s,transform .08s}.submit:hover:not(:disabled){filter:brightness(1.08);transform:translateY(-1px)}.submit:disabled{opacity:.5;cursor:not-allowed}.planlist{display:flex;flex-direction:column;gap:5px}.planrow{display:grid;grid-template-columns:auto auto 1fr auto;align-items:center;gap:10px;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:12px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:6px 10px}.planref{color:var(--accent);font-weight:700}.plantool{font-weight:700;color:var(--ink)}.planargs{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:520px){.bubble{max-width:84%}.topbar{padding:12px 14px;flex-wrap:wrap}.timeline{padding:14px 12px 6px}.modeseg button{padding:6px 9px;font-size:11.5px}}.splash{height:100dvh;display:grid;place-items:center;color:var(--muted);font-size:15px}.login{min-height:100dvh;display:grid;place-items:center;padding:24px}.login-card{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 24px;display:flex;flex-direction:column;gap:14px}.login-card .brand{font-size:17px}.login-sub{margin:-4px 0 6px;color:var(--muted);font-size:14px}.login-card label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:600;color:var(--muted)}.login-card input{padding:11px 13px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);font:inherit;font-size:15px;outline:none;transition:border-color .15s,box-shadow .15s}.login-card input:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%,transparent)}.login-card .send{height:46px;margin-top:6px}.login-error{font-size:13px;color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,transparent);border:1px solid color-mix(in srgb,var(--bad) 30%,var(--line));border-radius:10px;padding:8px 11px;word-break:break-word}