:root{--bg: #f7f7f5;--surface: #ffffff;--border: #e4e2dd;--text: #1f2421;--text-dim: #6b7069;--accent: #0f766e;--accent-soft: #e6f2f0;--user-bubble: #eef1ee;--warn: #b45309;--error: #b91c1c;--ok: #15803d;font-family:-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text)}button{font:inherit;cursor:pointer}.layout{display:grid;grid-template-columns:240px minmax(0,1fr) 320px;height:100%}.sidebar{display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--surface);padding:14px 10px;gap:10px}.brand{font-weight:650;font-size:15px;padding:2px 6px}.brand-mark{color:var(--accent)}.new-chat{border:1px solid var(--border);background:var(--surface);border-radius:8px;padding:8px 10px;text-align:left;color:var(--accent);font-weight:550}.new-chat:hover{background:var(--accent-soft)}.session-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px}.session-item{display:flex;align-items:center;gap:6px;width:100%;border:0;background:transparent;border-radius:6px;padding:7px 8px;text-align:left;color:var(--text)}.session-item:hover{background:var(--bg)}.session-item.active{background:var(--accent-soft)}.session-title{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.session-pending{color:var(--warn);font-size:10px}.sidebar-foot{font-size:11px;color:var(--text-dim);padding:4px 6px}.chat{display:flex;flex-direction:column;min-width:0}.messages{flex:1;overflow-y:auto;padding:24px 8vw 12px}.empty-state{max-width:620px;margin:8vh auto 0}.empty-state h1{font-size:28px;margin-bottom:6px}.empty-state p{color:var(--text-dim);line-height:1.5}.suggestions{display:flex;flex-direction:column;gap:8px;margin-top:18px}.suggestions button{border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:10px 12px;text-align:left;color:var(--text);font-size:13px;line-height:1.4}.suggestions button:hover{border-color:var(--accent)}.message{margin-bottom:14px}.message-user .user-text{background:var(--user-bubble);display:inline-block;padding:9px 13px;border-radius:12px 12px 3px;margin:0 0 0 auto;white-space:pre-wrap;max-width:80%}.message-user{text-align:right}.message-assistant .message-body{max-width:760px}.prose{line-height:1.55;font-size:14.5px}.prose p{margin:.5em 0}.prose table{border-collapse:collapse;margin:.6em 0;font-size:13.5px}.prose th,.prose td{border:1px solid var(--border);padding:5px 9px;text-align:left}.prose th{background:var(--bg)}.prose code{background:var(--bg);padding:1px 4px;border-radius:4px;font-size:.9em}.prose a{color:var(--accent)}.usage{font-size:11px;color:var(--text-dim);margin-top:4px}.tool-chip{margin:4px 0;font-size:12.5px}.tool-chip-head{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:3px 10px;color:var(--text-dim)}.tool-dot{width:7px;height:7px;border-radius:50%;background:var(--text-dim)}.tool-done .tool-dot{background:var(--ok)}.tool-failed .tool-dot{background:var(--error)}.tool-running .tool-dot{background:var(--warn);animation:pulse 1s infinite}@keyframes pulse{50%{opacity:.3}}.tool-detail{background:#222623;color:#d7dcd6;border-radius:8px;padding:10px;font-size:11.5px;overflow-x:auto;max-height:260px}.reasoning{margin:4px 0;font-size:12.5px}.reasoning>button{border:0;background:none;color:var(--text-dim);text-decoration:underline dotted;padding:0}.reasoning-body{color:var(--text-dim);font-style:italic;margin-top:4px;white-space:pre-wrap}.confirmation-card{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--warn);background:#fff8ed;border-radius:10px;padding:12px 14px;margin:10px 0;max-width:760px}.confirmation-text{display:flex;flex-direction:column;gap:2px;font-size:13px}.confirmation-actions{display:flex;gap:8px}.confirmation-actions .approve{background:var(--accent);color:#fff;border:0;border-radius:7px;padding:7px 14px}.confirmation-actions .decline{background:var(--surface);border:1px solid var(--border);border-radius:7px;padding:7px 14px}.activity-strip{font-size:12px;color:var(--text-dim);padding:4px 0}.composer{display:flex;gap:10px;padding:12px 8vw 18px;border-top:1px solid var(--border);background:var(--surface)}.composer textarea{flex:1;resize:none;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font:inherit;background:var(--bg)}.composer textarea:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.composer button{border:0;border-radius:10px;padding:0 22px;background:var(--accent);color:#fff;font-weight:550}.composer button:disabled{opacity:.4;cursor:default}.composer .stop{background:var(--error)}.trip-panel{border-left:1px solid var(--border);background:var(--surface);overflow-y:auto;padding:18px 16px;font-size:13px}.trip-empty h2{font-size:15px}.trip-empty p{color:var(--text-dim);line-height:1.5}.trip-head h2{font-size:16px;margin:0 0 6px}.trip-facts{display:flex;flex-wrap:wrap;gap:8px;color:var(--text-dim);font-size:12px;align-items:center}.trip-budget{margin-top:10px;font-size:12px;color:var(--text-dim)}.budget-bar{height:6px;background:var(--bg);border-radius:3px;overflow:hidden;margin-bottom:4px}.budget-fill{height:100%;background:var(--accent)}.trip-panel h3{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim);margin:18px 0 8px}.day-group{margin-bottom:10px}.day-label{font-weight:600;font-size:12px;margin-bottom:4px}.itinerary-row{display:grid;grid-template-columns:38px 20px 1fr auto;gap:6px;padding:4px 0;align-items:baseline}.item-time{color:var(--text-dim);font-variant-numeric:tabular-nums;font-size:12px}.item-cost{color:var(--text-dim);font-size:12px}.offer-row{display:flex;flex-direction:column;gap:3px;padding:7px 0;border-bottom:1px solid var(--border)}.offer-title{font-size:12.5px}.offer-detail{font-size:11.5px;color:var(--text-dim)}.offer-meta{display:flex;gap:8px;align-items:center;font-size:12px}.offer-price{font-weight:600}.badge{font-size:10.5px;border-radius:999px;padding:1px 8px;border:1px solid var(--border);color:var(--text-dim)}.badge-verified{color:var(--ok);border-color:var(--ok);background:#f0faf2}.badge-stale{color:var(--warn);border-color:var(--warn);background:#fff8ed}@media(max-width:1100px){.layout{grid-template-columns:200px minmax(0,1fr)}.trip-panel{display:none}}