:root{
  --bg:#f6f8f5; --surface:#fff; --ink:#15281f; --muted:#5d6f66; --line:#dbe4de;
  --forest:#1f5a3d; --forest-ink:#fff; --mango:#f4a52a; --mango-soft:#fff1d8; --me:#e3f1e8; --ok:#1f7a4a;
  --f-brand:'Pacifico',cursive; --f-head:'Secular One','Assistant',system-ui,sans-serif; --f-body:'Assistant',system-ui,-apple-system,'Segoe UI',Arial,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f1713; --surface:#16211b; --ink:#e6efe9; --muted:#9bb0a4; --line:#29382f;
  --forest:#2f7d55; --mango:#f4b04a; --mango-soft:#3a2d16; --me:#1f3a2b; --ok:#5fcf91; color-scheme:dark}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.55}
.app{height:100%;display:flex;flex-direction:column}
header{background:var(--forest);color:var(--forest-ink);display:flex;align-items:center;gap:10px;
  padding:calc(10px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) 10px max(16px,env(safe-area-inset-left,0px))}
.brand{font-family:var(--f-brand);font-size:25px;line-height:1;direction:ltr}
.brand small{font-family:var(--f-head);font-size:11px;letter-spacing:.2em;margin-inline-start:5px;opacity:.85}
.beta{font:13px var(--f-head);background:var(--mango);color:#2a1a00;border-radius:999px;padding:1px 9px}
.newchat{margin-inline-start:auto;font:600 14px var(--f-body);background:rgba(255,255,255,.15);color:#fff;border:0;border-radius:999px;padding:5px 12px;cursor:pointer}
.col{width:100%;max-width:720px;margin:0 auto;padding-inline:max(16px,env(safe-area-inset-left,0px))}
.login{flex:1;display:grid;place-items:center;padding:16px}
.login .card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;max-width:380px;width:100%}
.login h1{font:400 22px var(--f-head);margin:0 0 6px}
.login p{margin:0 0 12px;color:var(--muted)}
.login form{display:flex;gap:8px}
.login input{flex:1;min-width:0;font:16px var(--f-body);border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:var(--bg);color:var(--ink)}
.login button,#send{font:700 15px var(--f-body);background:var(--forest);color:#fff;border:0;border-radius:12px;padding:10px 18px;cursor:pointer}
.err{color:#b4431e;min-height:1.2em;margin-top:8px!important}
main{flex:1;min-height:0;display:flex;flex-direction:column}
#scroll{flex:1;min-height:0;overflow-y:auto}
#msgs{display:flex;flex-direction:column;gap:12px;padding-block:16px}
.hello{background:var(--mango-soft);border-radius:16px;padding:14px 16px}
.hello p{margin:4px 0 10px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips button{font:600 14.5px var(--f-body);background:var(--surface);color:var(--ink);border:1.5px solid var(--line);border-radius:999px;padding:6px 13px;cursor:pointer;text-align:right}
.chips button:hover{border-color:var(--forest)}
.msg{max-width:90%;border-radius:16px;padding:10px 14px;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.me{align-self:flex-start;background:var(--me);border-top-right-radius:4px}
.msg.bot{align-self:flex-end;background:var(--surface);border:1px solid var(--line);border-top-left-radius:4px}
.msg.bot .chips{margin-top:8px;white-space:normal}
.status{align-self:flex-end;color:var(--muted);font-size:14.5px;display:flex;gap:8px;align-items:center}
.dots::after{content:'';animation:d 1.2s steps(4) infinite}
@keyframes d{0%{content:''}25%{content:'.'}50%{content:'..'}75%{content:'...'}}
.composer{background:var(--surface);border-top:1px solid var(--line);padding-block:10px calc(10px + env(safe-area-inset-bottom,0px))}
.row{display:flex;gap:8px;align-items:flex-end}
#q{flex:1;min-width:0;font:16px var(--f-body);border:1px solid var(--line);border-radius:14px;padding:10px 12px;background:var(--bg);color:var(--ink);resize:none;max-height:140px}
#send:disabled{opacity:.5}
/* result card */
.res{display:flex;flex-direction:column;gap:10px;width:100%}
.otabs{display:flex;gap:8px;overflow-x:auto}
.otab{flex:1 0 auto;display:flex;flex-direction:column;align-items:center;font:600 14px var(--f-body);background:var(--surface);color:var(--ink);border:1.5px solid var(--line);border-radius:12px;padding:7px 12px;cursor:pointer;min-width:96px}
.otab b{font:400 17px var(--f-head);color:var(--forest)}
.otab[aria-pressed="true"]{border-color:var(--forest);background:var(--me)}
.scard{border:2px solid var(--forest);border-radius:16px;background:var(--surface);padding:14px 16px;display:flex;flex-direction:column;gap:10px}
.sprice{font:400 30px/1.1 var(--f-head);color:var(--forest)}
.smeta{font-size:16px;font-weight:700}
.snote{font-size:13px;color:var(--muted)}
.schip{align-self:flex-start;margin-top:6px;font-size:13.5px;background:var(--mango-soft);border-radius:999px;padding:2px 10px}
.splan{list-style:none;margin:0;padding:0}
.srow{display:grid;grid-template-columns:34px minmax(0,1fr);gap:10px;padding:10px 0}
.srow+.srow{border-top:1px solid var(--line)}
.sic{font-size:20px;width:34px;height:34px;border-radius:50%;background:var(--bg);display:grid;place-items:center}
.sbd{display:flex;flex-direction:column;gap:4px;min-width:0}
.stop{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.stt{font-size:16.5px;font-weight:700;line-height:1.35}
.spr{font-weight:700;white-space:nowrap}
.ssub{font-size:14.5px;color:var(--muted)}
.salert{font-size:14px;border-radius:8px;padding:5px 9px;background:var(--mango-soft)}
.salert.ok{background:var(--bg);color:var(--ok)}
.sbtn{align-self:flex-start;background:var(--forest);color:#fff;font-weight:700;font-size:16px;text-decoration:none;border-radius:12px;padding:9px 20px}
.spick{display:flex;flex-direction:column;gap:4px;background:var(--mango-soft);border-inline-start:4px solid var(--mango);border-radius:10px;padding:7px 10px}
.spick-l{font-size:13.5px;font-weight:700}
.spick-n{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.spick-no{direction:ltr;font:400 19px/1.2 var(--f-head);letter-spacing:.05em;background:var(--forest);color:#fff;border-radius:8px;padding:2px 10px}
.spick-t{font-weight:700}
.smore summary,.why summary{cursor:pointer;color:var(--forest);font-weight:600;font-size:13.5px}
.smore .ln{font-size:13.5px;opacity:.85;margin-top:3px;overflow-wrap:anywhere}
.smore a{display:inline-block;margin:4px 0 0 8px;color:var(--forest);font-weight:700}
.sdiv{font-weight:800;color:var(--forest);padding:12px 0 4px;border-top:2px solid var(--line)}
.why{font-size:14.5px}
.why p{margin:6px 0}

.fb{align-self:flex-end;display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted);max-width:90%}
.fb-row{display:flex;gap:8px;align-items:center}
.fb button{font:600 14px var(--f-body);border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;padding:4px 10px;cursor:pointer}
.fb-form{display:flex;gap:6px;align-items:flex-end}
.fb-form textarea{flex:1;min-width:200px;font:15px var(--f-body);border:1px solid var(--line);border-radius:10px;padding:7px 9px;background:var(--surface);color:var(--ink)}
.fb-done{color:var(--ok)}
.scard.stay{gap:8px}
.salt{align-self:flex-start;color:var(--forest);font-weight:700;font-size:15px;text-decoration:none;border:1.5px solid var(--forest);border-radius:12px;padding:7px 14px}
.sbtn.wa{background:#1fa855}
.login .small{font-size:13px;color:var(--muted)}
/* questions form */
.qform{align-self:stretch;background:var(--surface);border:2px solid var(--forest);border-radius:16px;padding:14px 16px;display:flex;flex-direction:column;gap:14px}
.qintro{font-weight:700}
.qitem{display:flex;flex-direction:column;gap:7px}
.qq{font-weight:700;font-size:15.5px}
.qopts{display:flex;flex-wrap:wrap;gap:8px}
.qopt{font:600 14.5px var(--f-body);background:var(--bg);color:var(--ink);border:1.5px solid var(--line);border-radius:12px;padding:8px 13px;cursor:pointer;text-align:right}
.qopt[aria-pressed="true"]{background:var(--forest);color:#fff;border-color:var(--forest)}
.qopt:disabled{cursor:default;opacity:.85}
.qfree{font:15px var(--f-body);border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--bg);color:var(--ink)}
.qerr{color:#b4431e;font-size:14px}

/* the how-to guide: a full-height sheet, shown once and from the header button */
#guideBtn{margin-inline-start:auto}
.newchat{white-space:nowrap}
#guideBtn+.newchat{margin-inline-start:0}
.guide{position:fixed;inset:0;z-index:20;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;padding:16px}
.guide[hidden]{display:none}
.guide-card{background:var(--surface,#fff);color:var(--ink);border-radius:18px;max-width:640px;width:100%;max-height:calc(100dvh - 32px);display:flex;flex-direction:column;overflow:hidden}
.guide-body{overflow-y:auto;padding:18px 18px 8px;line-height:1.6;font-size:15.5px}
.guide-body h3{font:400 19px var(--f-head);color:var(--forest);margin:16px 0 6px}
.guide-body h3:first-child{margin-top:0}
.guide-body p{margin:0 0 6px}
.guide-body ul{margin:0 0 6px;padding-inline-start:20px}
.guide-body li{margin-bottom:4px}
.guide-go{margin:10px 18px 16px;font:700 16px var(--f-body);background:var(--forest);color:#fff;border:0;border-radius:12px;padding:12px;cursor:pointer}
@media (max-width:400px){header{gap:6px}.newchat{padding:5px 9px;font-size:13px}.brand small{display:none}}