:root{--bg: #f5f5f7;--surface: #ffffff;--surface-2: #fafafa;--text: #1d1d1f;--text-2: #6e6e73;--line: rgba(0, 0, 0, .08);--accent: #0071e3;--accent-soft: rgba(0, 113, 227, .1);--good: #1d8a44;--bad: #d0342c;--radius: 14px;--shadow: 0 1px 3px rgba(0, 0, 0, .05), 0 8px 24px rgba(0, 0, 0, .05)}@media (prefers-color-scheme: dark){:root{--bg: #0d0d0f;--surface: #1c1c1e;--surface-2: #242426;--text: #f5f5f7;--text-2: #98989e;--line: rgba(255, 255, 255, .1);--accent: #2997ff;--accent-soft: rgba(41, 151, 255, .14);--shadow: 0 1px 3px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 -apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}.container{max-width:880px;margin:0 auto;padding:24px 20px 80px}.topbar{position:sticky;top:0;z-index:5;-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid var(--line)}.topbar-inner{max-width:880px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:700;letter-spacing:-.02em;font-size:17px}.brand span{color:var(--accent)}h1{font-size:28px;letter-spacing:-.03em;margin:8px 0 4px}h2{font-size:19px;letter-spacing:-.02em;margin:0 0 12px}.sub{color:var(--text-2);margin:0 0 20px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}.stack{display:flex;flex-direction:column;gap:10px}button{font:inherit;font-weight:600;background:var(--accent);color:#fff;border:0;border-radius:980px;padding:9px 18px;cursor:pointer;transition:transform .06s ease,opacity .15s ease}button:hover{opacity:.9}button:active{transform:scale(.97)}button:disabled{opacity:.45;cursor:default}button.ghost{background:var(--accent-soft);color:var(--accent)}button.subtle{background:transparent;color:var(--text-2);font-weight:500}input,select{font:inherit;color:var(--text);background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:9px 12px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}label{font-size:12px;font-weight:600;color:var(--text-2);display:block;margin-bottom:4px}.tabs{display:flex;gap:4px;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:4px;width:fit-content;margin-bottom:18px}.tabs button{background:transparent;color:var(--text-2);border-radius:9px;padding:7px 16px;font-weight:600}.tabs button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.pill{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;background:var(--accent-soft);color:var(--accent);border-radius:980px;padding:3px 10px}.pill.neutral{background:var(--surface-2);color:var(--text-2);border:1px solid var(--line)}.pill.good{background:color-mix(in srgb,var(--good) 12%,transparent);color:var(--good)}.list-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.list-item:last-child{border-bottom:0}.trip-card{cursor:pointer;transition:transform .12s ease}.trip-card:hover{transform:translateY(-2px)}.amount-pos{color:var(--good);font-weight:700;font-variant-numeric:tabular-nums}.amount-neg{color:var(--bad);font-weight:700;font-variant-numeric:tabular-nums}.num{font-variant-numeric:tabular-nums}.plan{border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:12px;background:var(--surface-2)}.plan.best{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.flight-row{display:grid;grid-template-columns:1fr auto auto auto;gap:10px;align-items:baseline;padding:8px 0;border-bottom:1px dashed var(--line);font-size:14px}.flight-row:last-child{border-bottom:0}.muted{color:var(--text-2);font-size:13px}.error{color:var(--bad);font-size:13px;margin:8px 0 0}.bars{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}.bar{flex:1 1 90px;min-width:90px}.bar .track{height:5px;background:var(--line);border-radius:4px;overflow:hidden}.bar .fill{height:100%;background:var(--accent);border-radius:4px}.bar .lbl{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-2);margin-top:3px}.center{min-height:70vh;display:grid;place-items:center}.auth-card{width:340px}.spin{display:inline-block;width:14px;height:14px;border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px}@keyframes spin{to{transform:rotate(360deg)}}button.chip{background:transparent;color:var(--accent);border:1px solid var(--accent);font-weight:500;padding:6px 14px}button.chip:hover{opacity:1;background:var(--accent-soft)}button.chip.on{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}button.action{background:var(--text);color:var(--bg)}.msgs{max-height:400px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:6px 2px}.msg{max-width:76%;background:var(--surface-2);border:1px solid var(--line);padding:8px 12px;border-radius:16px;align-self:flex-start}.msg.mine{background:var(--accent);color:#fff;align-self:flex-end;border-color:transparent}.msg .who{font-size:11px;color:var(--text-2);margin-bottom:2px;font-weight:600}.msg.mine .who{color:#ffffffc7}.msg .body{white-space:pre-wrap;word-break:break-word}.convo-row{cursor:pointer;border-radius:10px;padding:10px 12px}.convo-row:hover{background:var(--surface-2)}.convo-row.active{background:var(--accent-soft)}.sponsored{border:1px dashed var(--line);border-radius:12px;padding:14px 16px;margin-top:12px;background:var(--surface-2)}.sponsored .tag{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-2)}button.link{background:none;border:none;padding:0;color:var(--accent);text-decoration:underline;font-size:14px;font-weight:500;cursor:pointer;width:auto}button.link:hover{opacity:.8}