:root{--bg:#f6f7f9;--panel:#fff;--text:#1b1f2a;--muted:#667085;--border:#e4e7ec;--accent:#2c5aa0;--accent-hover:#244b86;--accent-soft:#edf2fa;--user:#edf2fa;--error:#c0362c;--nav:#1b1a45;--nav-text:#e7e8f3;--nav-muted:#a3a4c2;--nav-line:#ffffff24;--nav-active:#2f5fb3;--radius:8px;--shadow:0 1px 2px #1018280d;color:var(--text);background:var(--bg);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px}@media (prefers-color-scheme:dark){:root{--bg:#12131c;--panel:#1a1c28;--text:#e6e8ef;--muted:#9a9fb2;--border:#2b2e3d;--accent:#5b8def;--accent-hover:#7aa3f3;--accent-soft:#1f2a44;--user:#1f2a44;--error:#f0776c;--nav:#121130;--shadow:none}}*{box-sizing:border-box}body{background:var(--bg);margin:0}button{font:inherit;cursor:pointer}.login{background:var(--nav);flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:100vh;display:flex}.login h1{color:#fff;margin:0 0 8px;font-size:28px;font-weight:700}.login p{color:var(--nav-muted);margin:0 0 8px}.login .error{color:#ff9b92}.layout{height:100vh;display:flex}aside{background:var(--nav);width:264px;color:var(--nav-text);flex-direction:column;flex-shrink:0;display:flex}.brand{letter-spacing:-.01em;color:#fff;padding:22px 20px 10px;font-size:20px;font-weight:700}.brand span{background:var(--nav-active);vertical-align:3px;border-radius:6px;padding:1px 6px;font-size:13px}.sessions{flex-direction:column;flex:1;gap:2px;padding:12px;display:flex;overflow-y:auto}.new-session{border:1px solid var(--nav-line);border-radius:var(--radius);color:var(--nav-text);text-align:left;background:0 0;margin-bottom:12px;padding:10px 12px;font-weight:500}.new-session:hover{background:#ffffff0f}.session{text-align:left;color:var(--nav-text);white-space:nowrap;text-overflow:ellipsis;background:0 0;border:none;border-radius:6px;padding:9px 12px;font-size:14px;font-weight:500;overflow:hidden}.session:hover{background:#ffffff0f}.session.active{background:var(--nav-active);color:#fff}.dot{background:#7fb0ff;border-radius:50%;width:8px;height:8px;margin-right:8px;display:inline-block}.account{border-top:1px solid var(--nav-line);justify-content:space-between;align-items:center;gap:8px;margin:0 12px;padding:14px 4px;font-size:14px;font-weight:500;display:flex}.account span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.account button{color:var(--nav-muted);background:0 0;border:none}.account button:hover{color:#fff}main{background:var(--panel);flex-direction:column;flex:1;min-width:0;display:flex}.topbar{border-bottom:1px solid var(--border);white-space:nowrap;text-overflow:ellipsis;padding:16px 24px;font-size:17px;font-weight:600;overflow:hidden}.empty{color:var(--muted);text-align:center;flex:1;justify-content:center;align-items:center;padding:24px;font-size:17px;display:flex}.conversation{background:var(--bg);flex:1;padding:24px max(24px,50% - 430px);overflow-y:auto}.message{border-radius:var(--radius);overflow-wrap:anywhere;margin:14px 0;padding:14px 18px;line-height:1.55}.message.user{background:var(--user);border:1px solid color-mix(in srgb, var(--accent) 18%, transparent);white-space:pre-wrap;width:fit-content;max-width:80%;margin-left:auto}.message.assistant{background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow)}.message.failed{border-color:var(--error)}.markdown>:first-child{margin-top:0}.markdown>:last-child{margin-bottom:0}.markdown a{color:var(--accent)}.markdown table{border-collapse:collapse;font-size:14px;display:block;overflow-x:auto}.markdown th,.markdown td{border:1px solid var(--border);padding:6px 10px}.markdown th{background:var(--bg);text-align:left;font-weight:600}.markdown code{font-size:.9em}.markdown pre{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);padding:12px;overflow-x:auto}.tools{color:var(--muted);margin:0 0 10px;padding-left:0;font-size:13px;list-style:none}.typing{color:var(--muted)}.tool-state{width:16px;display:inline-block}.tool.ok .tool-state{color:var(--accent)}.tool.failed .tool-state{color:var(--error)}.tool-time{font-variant-numeric:tabular-nums;margin-left:6px}.tool-output{background:var(--bg);white-space:pre-wrap;word-break:break-word;border-radius:6px;margin:4px 0 4px 16px;padding:6px 8px;font-size:12px}.tool details{margin-left:16px}.spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:10px;height:10px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.pr-links{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.pr-links a{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:3px 10px;font-size:13px;font-weight:500;text-decoration:none}.error{color:var(--error)}.banner{padding:8px 24px}.composer{border-top:1px solid var(--border);background:var(--panel);flex-direction:column;gap:8px;padding:16px max(24px,50% - 430px);display:flex}.composer.dragging{outline:2px dashed var(--accent);outline-offset:-6px}.composer-row{gap:8px;display:flex}.composer textarea{resize:none;border:1px solid var(--border);border-radius:var(--radius);font:inherit;color:var(--text);background:var(--panel);flex:1;padding:10px 14px;transition:border-color .15s,box-shadow .15s}.composer textarea:focus{border-color:color-mix(in srgb, var(--accent) 55%, var(--border));box-shadow:0 0 0 3px var(--accent-soft);outline:none}.composer .send{border-radius:var(--radius);background:var(--accent);color:#fff;border:none;padding:0 20px;font-weight:600}.composer .send:hover:not(:disabled){background:var(--accent-hover)}.composer .attach{border-radius:var(--radius);background:var(--accent-soft);border:none;padding:0 12px;font-size:18px}.composer button:disabled{opacity:.5;cursor:default}.composer-files,.attachments{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.attachments{white-space:normal;margin-top:8px}.composer-problem{color:var(--error);font-size:13px}.attachment{border:1px solid var(--border);border-radius:var(--radius);background:var(--panel);align-items:center;max-width:240px;display:flex}.attachment-open{min-width:0;color:var(--text);text-align:left;background:0 0;border:none;align-items:center;gap:8px;padding:4px 8px 4px 4px;display:flex}.attachment img,.attachment-icon{object-fit:cover;border-radius:6px;flex-shrink:0;width:40px;height:40px}.attachment-icon{background:var(--accent-soft);color:var(--accent);justify-content:center;align-items:center;font-size:10px;font-weight:600;display:flex}.attachment-text{flex-direction:column;min-width:0;display:flex}.attachment-name{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.attachment-size{color:var(--muted);font-size:11px}.attachment-remove{border:none;border-left:1px solid var(--border);color:var(--muted);background:0 0;align-self:stretch;padding:0 8px}@media (width<=720px){aside{display:none}}.trax-map{border:1px solid var(--border);border-radius:var(--radius);margin:8px 0;overflow:hidden}.map-header{flex-wrap:wrap;align-items:baseline;gap:4px 12px;padding:8px 12px;display:flex}.map-period,.map-stats{color:var(--muted);font-size:12px}.map-canvas{height:480px}.map-legend{flex-direction:column;gap:6px;padding:8px 12px;font-size:13px;display:flex}.map-legend label{align-items:baseline;gap:6px;display:flex}.map-swatch{border-radius:2px;flex-shrink:0;width:14px;height:4px;display:inline-block;transform:translateY(-2px)}.map-placeholder{border:1px dashed var(--border);border-radius:var(--radius);color:var(--muted);margin:8px 0;padding:12px}.map-placeholder.error{color:var(--error)}