:root{
  --paper:#FBF6EC; --ink:#1E1616; --ink-2:#5E4848; --line:#EED5CB;
  --vermilion:#C8242B; --red:#A3161C; --red-2:#7D0D12; --lacquer:#54080C; --night:#2A0406;
  --gold:#D3A13A; --gold-2:#F2D27E;
  --glass:rgba(30,10,10,.58); --glass-2:rgba(30,10,10,.78);
  --serif:"Noto Serif",Georgia,"Times New Roman",serif;
  --sans:"Be Vietnam Pro","Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  --tib:"Noto Serif Tibetan","Kailasa","Jomolhari","Microsoft Himalaya",serif;
  --safe-b:env(safe-area-inset-bottom,0px); --safe-t:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden;overscroll-behavior:none}
body{font-family:var(--sans);color:#fff;background:var(--night);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;user-select:none;-webkit-user-select:none}
body.en .vi{display:none!important} body:not(.en) .en{display:none!important}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
a{color:var(--gold-2)}
[hidden]{display:none!important}
.tib{font-family:var(--tib);font-size:26px;color:var(--gold-2);line-height:1.6}
.lat{font-family:var(--serif);letter-spacing:.12em;font-size:14px;color:#F5DCD4}
.hint{font-size:12.5px;color:#E9CFC6;opacity:.85}
.eyebrow{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold-2);font-weight:800}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;font-weight:700}
.btn-p{background:linear-gradient(180deg,var(--vermilion),var(--red));color:#fff;box-shadow:0 6px 18px rgba(200,36,43,.35)}
.btn-s{border:1.5px solid var(--gold);color:var(--gold-2)}
.btn:disabled{opacity:.5}

/* Cảnh */
#scene{position:fixed;inset:0;touch-action:none}
#scene canvas{display:block;width:100%!important;height:100%!important}
#flat{position:fixed;inset:0;background:var(--night)}
#flat img{width:100%;height:100%;object-fit:cover;object-position:center 40%}
#flat:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(42,4,6,.35),transparent 30%,transparent 65%,rgba(42,4,6,.7))}
.label{position:fixed;transform:translate(-50%,-100%);background:var(--glass-2);padding:3px 10px;border-radius:999px;font-size:13px;pointer-events:none;white-space:nowrap;border:1px solid rgba(242,210,126,.4)}

/* Cổng */
.gate{position:fixed;inset:0;z-index:30;display:flex;align-items:flex-end;justify-content:center;padding:24px 18px calc(24px + var(--safe-b));overflow:auto;
  background:linear-gradient(180deg,rgba(42,4,6,.15) 0%,rgba(42,4,6,.35) 40%,rgba(42,4,6,.85) 100%),url("img/dan-trang-hanoi-2025.jpg") center 40%/cover no-repeat,var(--night)}
.gate-in{background:rgba(30,6,8,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border:1px solid rgba(242,210,126,.18);border-radius:22px;padding:24px 22px}
.gate-cap{font-size:11px;color:#E9CFC6;opacity:.75;margin-top:10px}
.gate-in{max-width:420px;width:100%;text-align:center}
.gate-logo{width:56px;height:56px;object-fit:contain;filter:brightness(0) saturate(100%) invert(86%) sepia(30%) saturate(700%) hue-rotate(350deg) drop-shadow(0 0 14px rgba(242,210,126,.45))}
.gate h1{font-family:var(--serif);font-size:38px;margin:6px 0 4px;color:#fff}
.gate-sub{color:#F5DCD4;margin-bottom:14px}
.gate-form{display:grid;gap:12px;margin-top:18px;text-align:left}
.gate-form label{display:grid;gap:4px;font-size:13px;color:#F5DCD4}
.gate-form input,.gate-form select{height:46px;border-radius:12px;border:1px solid rgba(242,210,126,.35);background:rgba(255,255,255,.08);padding:0 14px;color:#fff;user-select:text;-webkit-user-select:text}
.gate-form select option{color:#000}
.gate-foot{margin-top:18px;font-size:13px;color:#E9CFC6}
.lang{color:var(--gold-2);font-weight:700}

/* HUD */
.hud{position:fixed;top:calc(10px + var(--safe-t));left:10px;right:10px;z-index:10;display:flex;justify-content:space-between;gap:10px;pointer-events:none}
.hud>*{pointer-events:auto}
.tally{background:var(--glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:14px;padding:8px 12px;min-width:0;max-width:260px;cursor:pointer}
.t-big{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--gold-2);line-height:1.1;font-variant-numeric:tabular-nums}
.t-sub{font-size:11px;color:#F5DCD4}
.t-bar{height:4px;background:rgba(255,255,255,.15);border-radius:4px;margin:5px 0 4px;overflow:hidden}
.t-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold-2))}
.t-split{display:flex;gap:10px;font-size:11px;color:#F5DCD4;flex-wrap:wrap}
.t-split b{color:#fff;font-variant-numeric:tabular-nums}
.hud-r{display:flex;gap:8px;align-items:flex-start}
.here{background:var(--glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:999px;padding:7px 12px;font-size:13px;white-space:nowrap}
.here small{opacity:.7;margin-left:6px}
.here{cursor:pointer;color:#fff}
.ppl{list-style:none;display:grid;gap:6px}
.ppl li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 12px;border-radius:12px;background:rgba(255,255,255,.06);font-size:14px}
.ppl li span{font-size:12px;color:#E9CFC6}
.ppl li.me{background:rgba(200,36,43,.35);outline:1px solid rgba(242,210,126,.4)}
.ppl li.me b{color:var(--gold-2)}
.sheet h2 small{font-size:13px;color:#E9CFC6;font-family:var(--sans);font-weight:400}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#5BD38A;box-shadow:0 0 8px #5BD38A;vertical-align:1px}
.here.off .dot{background:#999;box-shadow:none}
.ic{width:40px;height:40px;border-radius:50%;background:var(--glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font-size:18px}
.livebar{position:fixed;z-index:10;left:50%;transform:translateX(-50%);top:calc(120px + var(--safe-t));background:var(--glass-2);border:1px solid rgba(200,36,43,.8);border-radius:999px;padding:7px 14px;font-size:13px;max-width:calc(100% - 20px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.livebar b{color:var(--gold-2);margin-left:6px}
.rec{display:inline-block;width:9px;height:9px;border-radius:50%;background:#FF3B3B;animation:pulse 1.4s infinite;vertical-align:0}
@keyframes pulse{50%{opacity:.25}}

/* Thanh hành động */
.acts{position:fixed;z-index:10;left:50%;transform:translateX(-50%);bottom:calc(12px + var(--safe-b));display:flex;gap:4px;background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:20px;padding:6px;max-width:calc(100% - 16px)}
.acts button{display:grid;justify-items:center;gap:0;min-width:62px;padding:6px 6px 4px;border-radius:14px;font-size:11.5px;line-height:1.2;position:relative}
.acts button .ai{font-size:22px;line-height:1.2}
.acts button b{font-size:10.5px;color:var(--gold-2);font-variant-numeric:tabular-nums;font-weight:700}
.acts button.on{background:rgba(200,36,43,.55)}
.acts button.main{background:rgba(211,161,58,.22)}
.acts button:active{transform:scale(.95)}
.tip{position:fixed;z-index:9;left:50%;transform:translateX(-50%);bottom:calc(92px + var(--safe-b));font-size:12px;background:var(--glass);padding:4px 12px;border-radius:999px;white-space:nowrap;transition:opacity 1s}

/* Bảng trượt */
.sheet{position:fixed;z-index:20;left:50%;transform:translateX(-50%);bottom:0;width:min(520px,100%);max-height:86vh;overflow:auto;background:linear-gradient(180deg,rgba(84,8,12,.97),rgba(42,4,6,.98));border:1px solid rgba(242,210,126,.25);border-bottom:0;border-radius:22px 22px 0 0;padding:22px 20px calc(22px + var(--safe-b));box-shadow:0 -10px 40px rgba(0,0,0,.4);animation:up .22s ease-out}
.sheet.wide{width:min(860px,100%)}
@keyframes up{from{transform:translate(-50%,30px);opacity:0}}
.sheet h2{font-family:var(--serif);font-size:22px;color:var(--gold-2);margin-bottom:12px;padding-right:30px}
.sheet h3{font-size:15px;margin:18px 0 8px;color:#F5DCD4}
.sheet h3 small{opacity:.7;font-weight:400}
.x{position:absolute;right:12px;top:10px;width:36px;height:36px;font-size:26px;color:#F5DCD4}
.row{display:flex;gap:8px;align-items:center}
.between{justify-content:space-between}
.sheet input[type=number],.sheet textarea{width:100%;border-radius:12px;border:1px solid rgba(242,210,126,.35);background:rgba(255,255,255,.08);padding:10px 12px;user-select:text;-webkit-user-select:text}
.sheet textarea{resize:vertical;margin-bottom:6px}
.sheet form .btn{width:100%;margin:8px 0 6px}
.chk{display:flex;gap:6px;align-items:center;font-size:13px}
.note{margin-top:10px;font-size:13px;color:var(--gold-2);text-align:center}

/* Chuỗi hạt */
.beads{text-align:center}
.b-mantra .tib{font-size:24px}
.b-mantra .say{font-size:13px;color:#E9CFC6}
.mala{position:relative;width:min(300px,78vw);aspect-ratio:1;margin:8px auto 4px;touch-action:none;cursor:pointer;outline:none}
.mala svg{width:100%;height:100%;overflow:visible}
.mala circle.bd{fill:#7A4A2A;stroke:#3A1E0E;stroke-width:.6;transition:fill .15s}
.mala circle.bd.done{fill:#D3A13A}
.mala circle.bd.cur{fill:#F2D27E;filter:drop-shadow(0 0 4px #F2D27E)}
.mala circle.guru{fill:#C8242B}
.m-num{position:absolute;inset:0;display:grid;place-content:center;pointer-events:none}
.m-num b{font-family:var(--serif);font-size:54px;color:var(--gold-2);line-height:1;font-variant-numeric:tabular-nums}
.m-num small{font-size:13px;color:#F5DCD4}
.m-num span{font-size:12px;color:#E9CFC6;margin-top:2px}
.mala.tick .m-num b{animation:tick .18s}
@keyframes tick{50%{transform:scale(1.12)}}
.b-stats{display:flex;justify-content:center;gap:28px;margin:10px 0}
.b-stats div{display:grid}
.b-stats b{font-size:20px;color:#fff;font-variant-numeric:tabular-nums}
.b-stats span{font-size:12px;color:#E9CFC6}
.b-quick{margin-top:8px;text-align:left;font-size:13px}
.b-quick summary{cursor:pointer;color:var(--gold-2)}
.b-quick .row{margin:8px 0 4px}
.b-quick .btn{height:42px;flex:none}

/* Đèn nguyện */
.lamps{list-style:none;display:grid;gap:8px}
.lamps li{background:rgba(255,255,255,.06);border-radius:12px;padding:8px 12px;font-size:14px;user-select:text;-webkit-user-select:text}
.lamps li b{display:block;font-size:12px;color:var(--gold-2);font-weight:600}
.lamps .empty{background:none;color:#E9CFC6;font-size:13px}

/* Trực tiếp */
.video{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:12px;overflow:hidden}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video .off{position:absolute;inset:0;display:grid;place-content:center;text-align:center;padding:20px;color:#F5DCD4;font-size:14px}
#lvHint{margin-top:10px}

/* Thời khoá */
.ptabs{display:flex;gap:6px;margin:10px 0;overflow-x:auto}
.ptabs button{flex:none;padding:6px 12px;border-radius:999px;border:1px solid rgba(242,210,126,.35);font-size:13px}
.ptabs button[aria-selected=true]{background:var(--vermilion);border-color:var(--vermilion)}
.prog{list-style:none;display:grid;gap:4px}
.prog li{display:grid;grid-template-columns:96px 1fr;gap:8px;padding:7px 10px;border-radius:10px;background:rgba(255,255,255,.05);font-size:14px}
.prog li time{color:var(--gold-2);font-variant-numeric:tabular-nums}
.prog li.brk{background:none;color:#E9CFC6;font-size:12.5px;padding:3px 10px}
.prog li.now{background:rgba(200,36,43,.5);outline:1px solid var(--vermilion)}
.prog li .lv{font-size:11px;color:#FF8E8E;margin-left:6px}

/* Menu */
.menu{display:grid;gap:6px}
.menu>*{display:flex;gap:10px;align-items:center;text-align:left;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.06);text-decoration:none;color:#fff;font-size:15px}
.help{list-style:none;display:grid;gap:8px;margin-bottom:12px;font-size:14px}
.vol{display:grid;grid-template-columns:1fr 1.4fr 40px;gap:10px;align-items:center;margin:12px 0;font-size:14px}
.vol input{accent-color:var(--gold)}
.vol output{font-size:12px;text-align:right;color:#E9CFC6}

.overlay{position:fixed;inset:0;z-index:40;background:rgba(20,2,4,.88);display:grid;place-content:center;text-align:center;padding:30px}
.overlay h2{font-family:var(--serif);color:var(--gold-2);margin-bottom:8px}
.overlay p{color:#F5DCD4;margin-bottom:18px;max-width:360px}
.toast{position:fixed;z-index:50;left:50%;transform:translateX(-50%);bottom:calc(100px + var(--safe-b));background:var(--glass-2);border:1px solid rgba(242,210,126,.4);padding:8px 16px;border-radius:999px;font-size:13.5px;max-width:calc(100% - 30px);text-align:center}

@media (max-width:420px){
  .acts button{min-width:0;flex:1;font-size:10.5px;padding:6px 2px 4px}
  .acts{left:8px;right:8px;transform:none;max-width:none}
  .tally{max-width:200px;padding:7px 10px}.t-big{font-size:20px}
  .here{font-size:12px;padding:6px 10px}.here small{display:none}
}
@media (min-width:900px){ .tally{max-width:300px} }

@media (min-width:900px){ .gate{align-items:center;justify-content:flex-end;padding-right:6vw} }
@media (max-height:720px){ .gate h1{font-size:30px} .gate-sub{margin-bottom:6px} .gate .tib{font-size:22px} }

#chantBtn{opacity:.55}
#chantBtn.on{opacity:1;box-shadow:0 0 0 1.5px var(--gold) inset}

.back3d{position:fixed;z-index:10;left:50%;transform:translateX(-50%);bottom:calc(96px + var(--safe-b));background:var(--glass-2);border:1.5px solid var(--gold);color:var(--gold-2);font-weight:700;border-radius:999px;padding:9px 18px;font-size:14px;box-shadow:0 6px 18px rgba(0,0,0,.35)}