:root{
  --bg:#F6F4EE; --surface:#FFFFFF; --ink:#1B2421; --muted:#66706C; --line:#E3E0D6;
  --brand:#0E7C66; --brand-ink:#FFFFFF; --accent:#F4C95D; --accent-ink:#4A3700;
  --bubble-me:#0E7C66; --bubble-bot:#FFFFFF; --ok:#1F8A4C; --chip:#ECE8DC;
  --radius:16px; --shadow:0 1px 2px rgba(0,0,0,.06),0 4px 14px rgba(0,0,0,.05);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#101614; --surface:#18211E; --ink:#E9EFEC; --muted:#93A19B; --line:#26332E;
    --brand:#2BA486; --bubble-me:#1E7E68; --bubble-bot:#18211E; --chip:#1F2B27; --shadow:none; }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  display:flex;flex-direction:column;max-width:720px;margin:0 auto;}
button{font:inherit;cursor:pointer}
.top{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:8px;
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px;background:var(--bg);border-bottom:1px solid var(--line)}
.brand{display:flex;gap:10px;align-items:center}
.brand img{width:36px;height:36px;border-radius:10px}
.brand b{font-size:18px;display:block;line-height:1.1}
.brand small{color:var(--muted);font-size:12px}
.top-actions{display:flex;gap:8px;align-items:center}
.lang{display:flex;background:var(--chip);border-radius:999px;padding:3px}
.lang button{border:0;background:none;color:var(--muted);padding:4px 10px;border-radius:999px;font-size:13px;font-weight:600}
.lang button.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
.ghost{border:1px solid var(--brand);color:var(--brand);background:none;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:600}

main{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:88%;padding:10px 14px;border-radius:var(--radius);white-space:pre-wrap;word-wrap:break-word}
.msg.me{align-self:flex-end;background:var(--bubble-me);color:#fff;border-bottom-right-radius:6px}
.msg.bot{align-self:flex-start;background:var(--bubble-bot);box-shadow:var(--shadow);border:1px solid var(--line);border-bottom-left-radius:6px}
.typing span{display:inline-block;width:7px;height:7px;margin:0 2px;border-radius:50%;background:var(--muted);animation:b 1s infinite}
.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}
@keyframes b{0%,80%,100%{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
.note{font-size:12px;color:var(--muted);align-self:center;text-align:center}

.cards{display:flex;flex-direction:column;gap:10px;width:100%}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}
.al{font-weight:600}.al small{display:block;color:var(--muted);font-weight:400;font-size:13px}
.price{font-size:22px;font-weight:700;white-space:nowrap}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0 2px}
.tag{font-size:12px;font-weight:600;padding:2px 8px;border-radius:999px;background:var(--chip);color:var(--ink)}
.tag.cheapest{background:var(--accent);color:var(--accent-ink)}
.route{display:flex;align-items:center;gap:10px;margin:10px 0;font-variant-numeric:tabular-nums}
.route .t{font-size:18px;font-weight:600}.route .c{font-size:12px;color:var(--muted)}
.route .line{flex:1;text-align:center;font-size:12px;color:var(--muted);border-top:1px dashed var(--line);padding-top:4px}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.btn{flex:1;min-width:140px;border:0;border-radius:12px;padding:11px 12px;font-weight:600;text-align:center;text-decoration:none;font-size:15px}
.btn.primary{background:var(--brand);color:var(--brand-ink)}
.btn.sec{background:var(--chip);color:var(--ink)}
.tip{font-size:13px;color:var(--muted);padding:2px 4px}
.tip a{color:var(--brand)}

.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 16px 8px;scrollbar-width:none}
.chips button{flex:none;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:7px 12px;font-size:14px}
.composer{display:flex;gap:8px;padding:8px 16px calc(10px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line)}
.composer input{flex:1;min-width:0;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:12px 16px;font-size:16px;outline:none}
.composer input:focus{border-color:var(--brand)}
.composer button{width:46px;height:46px;flex:none;border:0;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center}

.sheet{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:flex-end;justify-content:center;z-index:20}
.sheet[hidden]{display:none}
.sheet-card{background:var(--surface);width:100%;max-width:720px;border-radius:20px 20px 0 0;padding:20px 16px calc(20px + env(safe-area-inset-bottom));max-height:90vh;overflow:auto}
.sheet h3{margin:0 0 4px}.sheet p{margin:0 0 12px;color:var(--muted);font-size:14px}
.sheet label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
.sheet input,.sheet select{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:12px;padding:11px 12px;font-size:16px}
.sheet .actions{margin-top:16px}
.msg .from{display:block;font-size:11px;font-weight:700;color:var(--brand);margin-bottom:2px}
.msg.human-msg{border-left:3px solid var(--brand)}
.msg.failed{opacity:.55}
.status{display:flex;align-items:center;gap:8px;margin:0 16px 6px;padding:8px 12px;border-radius:12px;background:var(--chip);font-size:13px}
.status .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);flex:none}
.chips .human{border-color:var(--brand);color:var(--brand);font-weight:600}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.price small{font-size:12px;font-weight:500;color:var(--muted)}
.best{width:100%;display:flex;flex-direction:column;gap:6px}
.best-title{font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.best-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:8px}
.best-tile{display:flex;flex-direction:column;gap:2px;min-width:0;text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:14px;padding:10px 12px;box-shadow:var(--shadow)}
.best-tile .bt-l{font-size:12px;color:var(--muted);font-weight:600}
.best-tile .bt-p{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}
.best-tile .bt-a{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.best-tile[data-k="refund"]{border-color:var(--brand)}
.fares{display:flex;flex-direction:column;gap:6px;margin:4px 0 12px}
.fare{display:flex;justify-content:space-between;align-items:center;gap:10px;text-align:left;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);border-radius:12px;padding:9px 12px}
.fare.on{border-color:var(--brand);background:var(--surface);box-shadow:0 0 0 1px var(--brand) inset}
.fare .f-l{display:flex;flex-direction:column;min-width:0;font-size:14px}
.fare .f-l small{font-weight:400;color:var(--muted);font-size:12px}
.fare .f-d{font-size:12px;color:var(--muted)}
.fare .f-p{font-weight:700;font-size:17px;white-space:nowrap;font-variant-numeric:tabular-nums}
.fare-unknown{font-size:13px;color:var(--muted);background:var(--chip);border-radius:10px;padding:8px 10px;margin:4px 0 12px}
.card.flash{box-shadow:0 0 0 3px var(--accent)}
.icon-btn{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--brand);text-decoration:none;font-weight:700;font-size:15px}
.icon-btn[hidden]{display:none}
.top-actions{flex-wrap:nowrap}
@media (max-width:420px){.brand small{display:none}.lang button{padding:4px 7px}.ghost{padding:5px 9px}}
.composer .mic{background:var(--chip);color:var(--brand)}
.composer .mic.on{background:#C8423B;color:#fff;animation:pulse 1s infinite}
.composer .mic[hidden]{display:none}
@keyframes pulse{50%{opacity:.6}}
@media (prefers-reduced-motion:reduce){.composer .mic.on{animation:none}}
.status a{color:var(--brand);font-weight:600}
.push-ask{display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap}
.ghost.small{padding:3px 10px;font-size:12px}
.pax{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.pax label{font-size:12px}
.sheet .check{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--ink);margin-top:12px}
.sheet .check input{width:auto}
.sheet .total{font-weight:700;color:var(--ink);margin:10px 0 0}
.sheet .err{color:#C8423B;margin:6px 0 0}
.icon-btn.cur{width:auto;border-radius:999px;padding:0 4px;gap:0;display:inline-flex;align-items:center;background:var(--chip);border:0}
.icon-btn.cur span{padding:4px 7px;border-radius:999px;color:var(--muted);font-size:13px}
.icon-btn.cur span.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
@media (max-width:380px){.top{padding-left:10px;padding-right:10px}.brand img{width:30px;height:30px}.top-actions{gap:5px}.icon-btn{width:30px;height:30px}#installBtn{font-size:12px;padding:4px 8px}}
.inst{display:inline-flex;align-items:center;gap:4px}
.inst[hidden]{display:none}
@media (max-width:480px){.inst span{display:none}.inst{width:34px;height:34px;padding:0;justify-content:center;border-radius:50%}}