:root{
  --bg:#f5f3ee;--surface:#fff;--surface-2:#efece5;--ink:#1d221f;--muted:#666d68;--line:#e2ded4;
  --acc:#2f6b4f;--acc-ink:#fff;--acc-soft:#e3efe8;--warn:#a8601c;--bad:#a23b2a;--ok:#2f6b4f;
  --user:#2f6b4f;--user-ink:#fff;--radius:14px;
  font-family:"Vazirmatn",system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#141715;--surface:#1c201d;--surface-2:#242925;--ink:#ebeae4;--muted:#a1a79f;--line:#323832;
  --acc:#63b28a;--acc-ink:#0e1411;--acc-soft:#203129;--warn:#e0a060;--bad:#e27a66;--ok:#63b28a;
  --user:#2b5a43;--user-ink:#f0f5f1;
}}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font-size:15px;line-height:1.65}
[hidden]{display:none!important}
a{color:var(--acc)}
button{font:inherit;border:0;border-radius:10px;padding:8px 14px;background:var(--acc);color:var(--acc-ink);cursor:pointer}
button.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
button.danger{background:transparent;color:var(--bad);border:1px solid var(--line)}
button.small{padding:5px 10px;font-size:13px}
button:disabled{opacity:.5;cursor:default}
input,textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:8px 10px;width:100%}
.meta{color:var(--muted);font-size:13px}
.err{color:var(--bad);min-height:1.5em}
.pill{font-size:12px;padding:2px 10px;border-radius:99px;border:1px solid var(--line);color:var(--muted);white-space:nowrap}

/* login */
.login{min-height:100%;display:grid;place-items:center;padding:24px}
.login-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px 28px;text-align:center;max-width:360px;width:100%}
.login-card h1{margin:8px 0 0;font-size:28px}.login-card p{color:var(--muted)}
.g_id_signin{display:flex;justify-content:center;margin-top:12px}

/* layout */
#app{display:flex;flex-direction:column;height:100dvh}
.top{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-size:18px}
.tabs{display:flex;gap:4px;background:var(--surface-2);padding:3px;border-radius:12px}
.tabs button{background:transparent;color:var(--muted);padding:6px 16px}
.tabs button[aria-selected=true]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.me{margin-inline-start:auto;display:flex;align-items:center;gap:8px}
.switch{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.switch input{width:auto}
main{flex:1;min-height:0;display:flex}
.tab{flex:1;min-height:0;display:flex;flex-direction:column;max-width:980px;margin:0 auto;width:100%}

/* chat */
.messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:88%;padding:10px 14px;border-radius:var(--radius);white-space:pre-wrap;word-wrap:break-word;overflow-wrap:anywhere}
.msg.user{align-self:flex-start;background:var(--user);color:var(--user-ink);border-end-start-radius:4px}
.msg.agent{align-self:flex-end;background:var(--surface);border:1px solid var(--line);border-end-end-radius:4px}
.msg.agent a{word-break:break-all}
.msg.typing{color:var(--muted)}
.msg.typing::after{content:"";display:inline-block;width:1.2em;animation:dots 1.2s steps(4) infinite;overflow:hidden;vertical-align:bottom}
@keyframes dots{0%{content:""}25%{content:"."}50%{content:".."}75%{content:"..."}}
.composer{display:flex;gap:8px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--surface)}
.composer textarea{resize:none;max-height:160px}
.empty{margin:auto;text-align:center;color:var(--muted);max-width:520px;padding:24px}
.empty .ex{display:block;margin:8px auto;text-align:start;background:var(--surface);border:1px solid var(--line);color:var(--ink);width:100%}

/* trips */
#tab-trips{overflow-y:auto;padding:16px}
.trips-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.trips-head h2{font-size:18px;margin:0}
.trip{margin:18px 0 8px}
.trip>h3{font-size:15px;color:var(--muted);margin:0 0 8px;font-weight:600}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px}
.m-head{display:grid;grid-template-columns:1fr auto;gap:12px}
.m-title{margin:0;font-size:16px}
.m-price{text-align:left}
.price{font-size:22px;font-weight:700;color:var(--acc);font-variant-numeric:tabular-nums}
.spark{color:var(--acc);display:block;margin-top:4px}
.picks{margin:10px 0 0;padding-inline-start:20px}
.picks li{margin:6px 0}
.picks .links{font-size:13px}
.picks .why{color:var(--muted);font-size:13px}
.note{margin-top:6px}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.booked{border-color:var(--acc);background:var(--acc-soft)}
.tag{display:inline-block;font-size:12px;padding:0 8px;border-radius:99px;background:var(--acc-soft);color:var(--acc);margin-inline-start:6px}
.edit{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.edit .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.edit label{display:flex;flex-direction:column;gap:3px;font-size:12px;color:var(--muted)}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
label.chk{flex-direction:row!important;align-items:center;color:var(--ink)!important;font-size:14px!important;gap:6px}
label.chk input{width:auto}

@media (max-width:640px){
  .top{padding:8px 12px}
  .tabs{order:3;width:100%;justify-content:center}
  .tabs button{flex:1}
  .msg{max-width:94%}
  .m-head{grid-template-columns:1fr}
  .m-price{text-align:start}
}