:root{
  --bg:#080a14; --panel:#0e1222ee; --line:#252b45; --text:#e8ebf7; --muted:#8b93b3;
  --accent:#ffd23f; --accent-ink:#1b1500; --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);
  font:14px/1.45 "Be Vietnam Pro",system-ui,sans-serif;overflow:hidden}
#c{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}

#panel{position:fixed;top:0;left:0;bottom:0;width:340px;padding:16px 16px 24px;overflow-y:auto;
  background:var(--panel);backdrop-filter:blur(14px);border-right:1px solid var(--line);
  transition:transform .25s ease;z-index:5}
#panel.hidden{transform:translateX(-100%)}
header .eyebrow{font-size:11px;letter-spacing:.04em;color:var(--muted);text-transform:uppercase}
h1{margin:2px 0 2px;font:800 28px/1.1 "Barlow Condensed",sans-serif;letter-spacing:.02em}
.sub{color:var(--muted);font-size:12px}
.langs{margin-top:8px;display:flex;gap:6px}
.langs button{padding:3px 10px;font-size:12px}
section{margin-top:18px}
h2{margin:0 0 8px;font:700 12px/1 "Barlow Condensed",sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
label{display:block;margin-bottom:8px;font-size:12px;color:var(--muted)}
label span{display:block;margin-bottom:3px}
label.inline{display:flex;align-items:center;justify-content:space-between;gap:8px}
label.inline span{margin:0}
select,input[type=number]{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--line);
  background:#151a30;color:var(--text);font:inherit}
label.inline select{width:auto}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
button{font:inherit;color:var(--text);background:#171c33;border:1px solid var(--line);border-radius:8px;
  padding:8px 10px;cursor:pointer;transition:background .15s,border-color .15s}
button:hover{background:#20274a}
button.on{border-color:var(--accent);color:var(--accent)}
button.primary{width:100%;margin-top:6px;background:var(--accent);color:var(--accent-ink);border:0;font-weight:700;padding:10px}
button.primary:hover{background:#ffe074}
button.ghost{width:100%;margin-top:8px;background:transparent}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.grid2 .wide{grid-column:span 2}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips button{display:flex;align-items:center;gap:6px;padding:5px 10px;font-size:12px}
.dot{width:10px;height:10px;border-radius:50%;flex:none}
.card{margin-top:10px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);background:#10152b;font-size:13px}
.card b{color:var(--accent)}
.card .k{color:var(--muted)}
.toggles{display:grid;grid-template-columns:1fr 1fr;gap:2px 10px}
.toggles label{display:flex;align-items:center;gap:6px;margin:0;padding:4px 0;color:var(--text);cursor:pointer}
.toggles label span{margin:0}
.prices{list-style:none;margin:0;padding:0}
.prices li{display:grid;grid-template-columns:12px 1fr auto;gap:8px;align-items:start;padding:7px 0;
  border-bottom:1px solid var(--line);cursor:pointer}
.prices li:hover .n{color:var(--accent)}
.prices .n{font-weight:600}
.prices .d{font-size:11px;color:var(--muted)}
.prices .p{font-weight:700;white-space:nowrap}
.muted{color:var(--muted);font-size:12px}
footer{margin-top:18px;font-size:11px}

/* Rủ nhóm bạn */
input[type=text]{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--line);
  background:#151a30;color:var(--text);font:inherit}
.member{border:1px solid var(--line);border-radius:10px;padding:8px;margin-bottom:6px;background:#10152b}
.member .mtop{display:flex;gap:6px;align-items:center}
.member .mtop input{flex:1;min-width:0;padding:6px 8px}
.member .mtop button{padding:5px 8px;font-size:12px;flex:none}
.member .mpos{display:grid;grid-template-columns:1fr 62px 60px;gap:6px;margin-top:6px}
.member .mpos select,.member .mpos input{padding:6px;font-size:12px}
.member .msub{margin-top:4px;font-size:11px;color:var(--muted)}
#members:empty{display:none}
#gUrl{margin-top:8px;font-size:11px}
#gMsg:empty{display:none}
#gMsg{margin:6px 0 0}
.pairs{margin:6px 0 0;padding:0;list-style:none}
.pairs li{display:grid;grid-template-columns:1fr auto;gap:2px 8px;padding:5px 0;border-top:1px solid var(--line);font-size:12px}
.pairs .bar{grid-column:span 2;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--accent),#ff4fa3)}
.pairs .note{grid-column:span 2;color:var(--muted);font-size:11px}
.who{display:inline-flex;align-items:center;gap:4px}
.who .dot{width:8px;height:8px}

#hide{position:fixed;top:12px;left:352px;z-index:6;width:40px;height:40px;padding:0;font-size:18px;
  transition:left .25s ease}
#panel.hidden ~ #hide{left:12px}
#hint{position:fixed;bottom:14px;left:50%;transform:translateX(-50%);padding:6px 14px;border-radius:999px;
  background:#000a;border:1px solid var(--line);font-size:12px;color:var(--muted);pointer-events:none;
  white-space:nowrap;max-width:90vw;overflow:hidden;text-overflow:ellipsis}
#loading{position:fixed;inset:0;display:grid;place-items:center;background:var(--bg);z-index:20;
  font:700 22px "Barlow Condensed",sans-serif;letter-spacing:.1em;transition:opacity .5s}
#loading.done{opacity:0;pointer-events:none}

@media (max-width:760px){
  #panel{top:auto;width:100%;height:48vh;border-right:0;border-top:1px solid var(--line);border-radius:16px 16px 0 0}
  #panel.hidden{transform:translateY(100%)}
  #hide{top:12px;left:12px}
  #panel.hidden ~ #hide,#hide{left:12px}
  #hint{display:none}
}