/* =====================================================================
   PRISM পর্যায় সারণী ২.০  (assets/prism-pt2.css)
   গ্লাস-কার্ড, নরম গ্রেডিয়েন্ট, ডার্ক মোড (html[data-theme="dark"]), বটম-শিট প্যানেল,
   বোর পরমাণু অ্যানিমেশন, তুলনা/কুইজ/শেয়ার-কার্ড ডায়ালগ। পুরোনো .px-pt* স্টাইল আর ব্যবহার হয় না।
   ===================================================================== */
.pt2{
  --pt-ink:#1b2038; --pt-mut:#667089; --pt-line:rgba(70,80,140,.16);
  --pt-glass:rgba(255,255,255,.62); --pt-glass2:rgba(255,255,255,.82);
  --pt-accent:#6d5df6; --pt-accent2:#2bb3d9; --pt-gold:#f5a524;
  --pt-shadow:0 8px 30px rgba(60,70,150,.14);
  --pt-bgwrap:radial-gradient(circle at 8% 4%,hsl(255 100% 93%) 0,transparent 42%),radial-gradient(circle at 96% 14%,hsl(190 95% 90%) 0,transparent 40%),radial-gradient(circle at 50% 100%,hsl(330 90% 94%) 0,transparent 45%),linear-gradient(180deg,#f8f9ff,#eef1fc);
  --cell:50px;
  color:var(--pt-ink); font-family:inherit;
}
html[data-theme="dark"] .pt2{
  --pt-ink:#eceffd; --pt-mut:#9aa4c4; --pt-line:rgba(160,175,255,.16);
  --pt-glass:rgba(30,36,72,.55); --pt-glass2:rgba(34,41,82,.82);
  --pt-accent:#8f83ff; --pt-accent2:#4fd1f0; --pt-gold:#ffc24a;
  --pt-shadow:0 10px 34px rgba(0,0,0,.45);
  --pt-bgwrap:radial-gradient(circle at 8% 4%,hsl(255 60% 24%) 0,transparent 42%),radial-gradient(circle at 96% 14%,hsl(195 70% 18%) 0,transparent 40%),radial-gradient(circle at 50% 100%,hsl(320 55% 20%) 0,transparent 45%),linear-gradient(180deg,#0d1128,#12172f);
}
.pt2 *{ box-sizing:border-box; }
.pt2 svg.i{ width:1.15em; height:1.15em; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round; flex:none; vertical-align:-.2em; }
.pt2 svg.i.fill{ fill:currentColor; }
.pt2 button{ font-family:inherit; }

/* ---------- হিরো + আজকের মৌল ---------- */
.pt2-top{ display:grid; grid-template-columns:1fr; gap:12px; margin-bottom:12px; }
@media (min-width:860px){ .pt2-top{ grid-template-columns:1.25fr 1fr; } }
.pt2-hero{ border-radius:20px; padding:18px 20px; color:#fff; position:relative; overflow:hidden;
  background:linear-gradient(125deg,#6d5df6 0%,#3b82f6 55%,#22b8cf 100%); box-shadow:var(--pt-shadow); }
.pt2-hero::after{ content:''; position:absolute; right:-40px; top:-50px; width:190px; height:190px; border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.35),transparent 68%); pointer-events:none; }
.pt2-hero h2{ margin:0 0 4px; font-size:23px; display:flex; align-items:center; gap:9px; color:#fff; }
.pt2-hero p{ margin:0; opacity:.92; font-size:14.5px; line-height:1.5; }
.pt2-actions{ display:flex; flex-wrap:wrap; gap:8px; margin-top:13px; position:relative; z-index:1; }
.pt2-btn{ display:inline-flex; align-items:center; gap:7px; border:1px solid rgba(255,255,255,.38); background:rgba(255,255,255,.17);
  color:#fff; padding:8px 13px; border-radius:30px; font-size:14px; font-weight:600; cursor:pointer; backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px); transition:transform .15s,background .2s; }
.pt2-btn:hover{ background:rgba(255,255,255,.28); } .pt2-btn:active{ transform:scale(.94); }
.pt2-btn.on{ background:#fff; color:#4338ca; }
.pt2-today{ border-radius:20px; padding:14px 16px; display:flex; gap:14px; align-items:center; cursor:pointer; text-align:left; width:100%;
  background:var(--pt-glass); border:1px solid var(--pt-line); box-shadow:var(--pt-shadow); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  color:var(--pt-ink); transition:transform .18s; }
.pt2-today:active{ transform:scale(.985); }
.pt2-today .tl{ font-size:12px; font-weight:700; letter-spacing:.3px; color:var(--pt-accent); display:flex; align-items:center; gap:5px; }
.pt2-today h3{ margin:2px 0 3px; font-size:20px; color:var(--pt-ink); }
.pt2-today p{ margin:0; font-size:13.5px; color:var(--pt-mut); line-height:1.5; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }

/* ---------- টুলবার ---------- */
.pt2-bar{ display:flex; flex-wrap:wrap; gap:8px; align-items:center; margin-bottom:10px; padding:10px; border-radius:16px;
  background:var(--pt-glass); border:1px solid var(--pt-line); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px); }
.pt2-search{ flex:1 1 220px; display:flex; align-items:center; gap:8px; padding:0 12px; height:42px; border-radius:12px; background:var(--pt-glass2); border:1px solid var(--pt-line); color:var(--pt-mut); }
.pt2-search input{ flex:1; min-width:0; border:none; outline:none; background:transparent; color:var(--pt-ink); font-size:15px; font-family:inherit; height:100%; box-shadow:none; padding:0; margin:0; }
.pt2-search:focus-within{ border-color:var(--pt-accent); box-shadow:0 0 0 3px color-mix(in srgb,var(--pt-accent) 25%,transparent); }
.pt2-sel{ height:42px; border-radius:12px; border:1px solid var(--pt-line); background:var(--pt-glass2); color:var(--pt-ink); padding:0 10px; font-size:14.5px; font-family:inherit; width:auto; margin:0; }
.pt2-ib{ height:42px; min-width:42px; padding:0 11px; border-radius:12px; border:1px solid var(--pt-line); background:var(--pt-glass2); color:var(--pt-ink); display:inline-flex; align-items:center; justify-content:center; gap:6px; cursor:pointer; font-size:14px; font-weight:600; transition:transform .12s; margin:0; }
.pt2-ib:active{ transform:scale(.92); } .pt2-ib.on{ background:var(--pt-accent); color:#fff; border-color:transparent; }
.pt2-ib.fav.on{ background:var(--pt-gold); color:#3b2a00; }

.pt2-legend{ display:flex; gap:6px; flex-wrap:wrap; margin:0 0 10px; }
.pt2-leg{ display:inline-flex; align-items:center; gap:6px; border:1px solid var(--pt-line); background:var(--pt-glass); color:var(--pt-ink); border-radius:20px; padding:4px 10px 4px 7px; font-size:12.5px; cursor:pointer; transition:transform .12s,box-shadow .2s; }
.pt2-leg i{ width:11px; height:11px; border-radius:50%; background:hsl(var(--h) 72% 58%); box-shadow:0 0 0 2px hsl(var(--h) 72% 58% / .25); }
.pt2-leg small{ opacity:.65; } .pt2-leg:active{ transform:scale(.93); }
.pt2-leg.on{ outline:2px solid var(--pt-accent); outline-offset:1px; }
.pt2-grad{ height:10px; border-radius:6px; flex:1; min-width:120px; max-width:360px; }
.pt2-gradbox{ display:flex; align-items:center; gap:10px; font-size:12.5px; color:var(--pt-mut); width:100%; }

/* ---------- তাপমাত্রা স্লাইডার ---------- */
.pt2-temp{ display:none; margin:0 0 10px; padding:12px 14px; border-radius:16px; background:var(--pt-glass); border:1px solid var(--pt-line); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px); }
.pt2.phase .pt2-temp{ display:block; animation:pt2-fade .3s; }
.pt2-trow{ display:flex; align-items:baseline; justify-content:space-between; gap:10px; flex-wrap:wrap; }
.pt2-tval{ font-size:26px; font-weight:800; color:var(--pt-ink); line-height:1.1; }
.pt2-tval small{ font-size:14px; font-weight:600; color:var(--pt-mut); margin-left:6px; }
.pt2-tcnt{ display:flex; gap:6px; flex-wrap:wrap; }
.pt2-tcnt span{ font-size:12.5px; padding:3px 10px; border-radius:20px; font-weight:700; color:#fff; }
.pt2-tcnt .s{ background:hsl(215 70% 52%); } .pt2-tcnt .l{ background:hsl(38 85% 46%); } .pt2-tcnt .g{ background:hsl(285 60% 55%); } .pt2-tcnt .u{ background:#7b8499; }
.pt2-range{ -webkit-appearance:none; appearance:none; width:100%; height:8px; border-radius:6px; margin:14px 0 8px; outline:none; padding:0; border:none;
  background:linear-gradient(90deg,hsl(215 75% 55%),hsl(190 80% 50%) 25%,hsl(48 90% 52%) 50%,hsl(20 90% 54%) 75%,hsl(350 80% 54%)); }
.pt2-range::-webkit-slider-thumb{ -webkit-appearance:none; width:26px; height:26px; border-radius:50%; background:#fff; border:3px solid var(--pt-accent); box-shadow:0 2px 8px rgba(0,0,0,.3); cursor:grab; }
.pt2-range::-moz-range-thumb{ width:22px; height:22px; border-radius:50%; background:#fff; border:3px solid var(--pt-accent); box-shadow:0 2px 8px rgba(0,0,0,.3); cursor:grab; }
.pt2-presets{ display:flex; gap:6px; flex-wrap:wrap; }
.pt2-presets button{ border:1px solid var(--pt-line); background:var(--pt-glass2); color:var(--pt-ink); border-radius:18px; padding:4px 11px; font-size:12.5px; cursor:pointer; }
.pt2-presets button:active{ transform:scale(.93); }

/* ---------- সারণীর গ্রিড ---------- */
.pt2-wrap{ position:relative; overflow-x:auto; overflow-y:hidden; border-radius:20px; padding:12px 12px 14px; -webkit-overflow-scrolling:touch;
  background:var(--pt-bgwrap); border:1px solid var(--pt-line); box-shadow:var(--pt-shadow); scrollbar-width:thin; }
.pt2-grid{ position:relative; display:grid; width:max-content; margin:0 auto; gap:4px;
  grid-template-columns:repeat(18,var(--cell));
  grid-template-rows:18px repeat(8,calc(var(--cell) * 1.12)) 8px repeat(3,calc(var(--cell) * 1.12)); }
.pt2-gl{ font-size:11px; text-align:center; color:var(--pt-mut); align-self:end; }
.pt2-mk,.pt2-lb{ display:grid; place-items:center; font-size:10px; color:var(--pt-mut); border:1px dashed var(--pt-line); border-radius:9px; text-align:center; line-height:1.15; }
.pt2-lb{ border:none; justify-items:end; padding-right:6px; font-size:11.5px; }

.pt2-el{ --h:215; position:relative; display:flex; flex-direction:column; align-items:center; justify-content:center; padding:2px 1px; margin:0; min-width:0;
  border-radius:11px; cursor:pointer; color:hsl(var(--h) 45% 18%); overflow:hidden; isolation:isolate; font-family:inherit; line-height:1.1;
  background:linear-gradient(150deg,hsl(var(--h) 85% 95% / .94),hsl(var(--h) 75% 84% / .72));
  border:1px solid hsl(var(--h) 70% 62% / .38);
  box-shadow:0 2px 8px hsl(var(--h) 60% 40% / .13), inset 0 1px 0 rgba(255,255,255,.75), inset 0 -8px 14px hsl(var(--h) 80% 70% / .14);
  transition:transform .16s cubic-bezier(.3,1.4,.5,1),opacity .2s,box-shadow .2s,filter .2s;
  -webkit-tap-highlight-color:transparent; touch-action:manipulation; }
html[data-theme="dark"] .pt2-el{ color:hsl(var(--h) 90% 90%);
  background:linear-gradient(150deg,hsl(var(--h) 52% 30% / .88),hsl(var(--h) 55% 17% / .78));
  border-color:hsl(var(--h) 65% 62% / .3);
  box-shadow:0 2px 10px rgba(0,0,0,.35), inset 0 1px 0 hsl(var(--h) 80% 80% / .22), inset 0 -8px 14px hsl(var(--h) 80% 50% / .1); }
.pt2-el.u{ --h:222; filter:saturate(.25); }
.pt2-el:hover{ transform:translateY(-2px) scale(1.09); z-index:4; box-shadow:0 10px 22px hsl(var(--h) 60% 35% / .3), inset 0 1px 0 rgba(255,255,255,.8); }
.pt2-el:active{ transform:scale(.88); transition-duration:.07s; }
.pt2-el:focus-visible{ outline:3px solid var(--pt-accent); outline-offset:1px; z-index:5; }
.pt2-el .z{ position:absolute; top:3px; left:5px; font-size:9.5px; font-style:normal; opacity:.72; font-weight:600; }
.pt2-el b{ font-size:calc(var(--cell) * .36); font-weight:800; letter-spacing:-.2px; }
.pt2-el .nm{ font-size:calc(var(--cell) * .185); max-width:100%; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; opacity:.85; padding:0 1px; }
.pt2.tiny .nm{ display:none; } .pt2.tiny .pt2-el .z{ font-size:8.5px; left:3px; top:2px; }
.pt2-el .st{ position:absolute; top:2px; right:3px; width:11px; height:11px; color:var(--pt-gold); display:none; }
.pt2-el.fav .st{ display:block; } .pt2-el .st svg{ width:100%; height:100%; fill:currentColor; stroke:none; }
.pt2-el.dim{ opacity:.17; transform:scale(.94); pointer-events:auto; }
.pt2-el.hit{ box-shadow:0 0 0 2.5px var(--pt-accent), 0 6px 18px color-mix(in srgb,var(--pt-accent) 45%,transparent); z-index:3; animation:pt2-pulse 1.2s ease-in-out infinite; }
.pt2-el.sel{ box-shadow:0 0 0 2.5px var(--pt-accent), 0 10px 26px color-mix(in srgb,var(--pt-accent) 50%,transparent); z-index:3; }
.pt2-el.cmpA{ box-shadow:0 0 0 2.5px #f59e0b, 0 8px 22px rgba(245,158,11,.4); z-index:3; }
.pt2-el.cmpB{ box-shadow:0 0 0 2.5px #10b981, 0 8px 22px rgba(16,185,129,.4); z-index:3; }
.pt2-el.pop{ animation:pt2-pop .42s cubic-bezier(.3,1.5,.5,1); }
.pt2-el .rip{ position:absolute; border-radius:50%; background:hsl(var(--h) 90% 60% / .45); transform:scale(0); animation:pt2-rip .55s ease-out forwards; pointer-events:none; z-index:-1; }
@keyframes pt2-pop{ 0%{ transform:scale(.8);} 55%{ transform:scale(1.16);} 100%{ transform:scale(1);} }
@keyframes pt2-rip{ to{ transform:scale(3.2); opacity:0; } }
@keyframes pt2-pulse{ 50%{ box-shadow:0 0 0 5px color-mix(in srgb,var(--pt-accent) 35%,transparent), 0 6px 18px color-mix(in srgb,var(--pt-accent) 45%,transparent); } }
@keyframes pt2-fade{ from{ opacity:0; transform:translateY(6px);} to{ opacity:1; transform:none; } }

/* শ্রেণি অনুযায়ী রং — সব ঘরে একই সংপৃক্তি/উজ্জ্বলতা, শুধু হিউ আলাদা */
.c-alkali{ --h:352; } .c-alkaline{ --h:24; } .c-transition{ --h:218; } .c-post{ --h:196; } .c-metalloid{ --h:162; }
.c-nonmetal{ --h:140; } .c-halogen{ --h:48; } .c-noble{ --h:272; } .c-lanthanide{ --h:304; } .c-actinide{ --h:330; } .c-unknown{ --h:222; filter:saturate(.3); }
.pt2-el.hm{ filter:none; } .pt2-el.hm.u{ filter:saturate(.2); opacity:.55; }

.pt2-zoom{ display:flex; gap:4px; }
.pt2-hint{ font-size:12.5px; color:var(--pt-mut); margin:8px 2px 0; display:flex; gap:6px; align-items:center; }
.pt2-cmpbar{ display:none; margin:0 0 10px; padding:9px 12px; border-radius:14px; align-items:center; gap:10px; flex-wrap:wrap; font-size:14px;
  background:linear-gradient(120deg,rgba(245,158,11,.18),rgba(16,185,129,.18)); border:1px solid var(--pt-line); }
.pt2.cmpon .pt2-cmpbar{ display:flex; animation:pt2-fade .25s; }
.pt2-cmpbar .sp{ flex:1; }
.pt2-chip{ display:inline-flex; align-items:center; gap:6px; padding:3px 10px; border-radius:18px; background:var(--pt-glass2); border:1px solid var(--pt-line); font-weight:700; font-size:13px; }
.pt2-chip.a{ border-color:#f59e0b; } .pt2-chip.b{ border-color:#10b981; }

/* ---------- প্যানেল (ডেস্কটপে ইনলাইন, মোবাইলে বটম-শিট) ---------- */
.pt2-inline{ margin-top:14px; border-radius:22px; background:var(--pt-glass); border:1px solid var(--pt-line); box-shadow:var(--pt-shadow); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); padding:16px 18px 20px; }
.pt2-ov{ position:fixed; inset:0; z-index:10050; background:rgba(8,10,28,.5); backdrop-filter:blur(5px); -webkit-backdrop-filter:blur(5px); opacity:0; pointer-events:none; transition:opacity .28s; }
.pt2-ov.open{ opacity:1; pointer-events:auto; }
.pt2-sheet{ position:fixed; left:0; right:0; bottom:0; z-index:10051; max-height:90vh; max-height:90dvh; display:flex; flex-direction:column; border-radius:26px 26px 0 0;
  transform:translateY(105%); transition:transform .38s cubic-bezier(.2,.9,.25,1); will-change:transform; overscroll-behavior:contain;
  background:var(--pt-sheet,#fff); box-shadow:0 -14px 50px rgba(20,24,70,.35); color:var(--pt-ink); border:1px solid var(--pt-line); border-bottom:none; }
html[data-theme="dark"] .pt2-sheet, html[data-theme="dark"] .pt2-dlg{ --pt-sheet:#171c3a; }
.pt2-sheet.open{ transform:none; } .pt2-sheet.drag{ transition:none; }
.pt2-sheet, .pt2-dlg{ --pt-ink:#1b2038; --pt-mut:#667089; --pt-line:rgba(70,80,140,.16); --pt-glass:rgba(110,110,200,.08); --pt-glass2:rgba(110,110,200,.1); --pt-accent:#6d5df6; --pt-gold:#f5a524; --pt-sheet:#fff; font-family:inherit; }
html[data-theme="dark"] .pt2-sheet, html[data-theme="dark"] .pt2-dlg{ --pt-ink:#eceffd; --pt-mut:#9aa4c4; --pt-line:rgba(160,175,255,.18); --pt-glass:rgba(150,160,255,.1); --pt-glass2:rgba(150,160,255,.12); --pt-accent:#8f83ff; --pt-sheet:#171c3a; }
.pt2-sheet svg.i, .pt2-dlg svg.i, .pt2-inline svg.i{ width:1.15em; height:1.15em; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round; flex:none; vertical-align:-.2em; }
.pt2-sheet svg.i.fill, .pt2-dlg svg.i.fill, .pt2-inline svg.i.fill{ fill:currentColor; }
.pt2-grab{ padding:9px 0 3px; display:grid; place-items:center; touch-action:none; cursor:grab; flex:none; }
.pt2-grab i{ width:42px; height:5px; border-radius:4px; background:var(--pt-mut); opacity:.5; }
.pt2-sbody{ overflow-y:auto; -webkit-overflow-scrolling:touch; padding:4px 16px calc(22px + env(safe-area-inset-bottom)); }
@media (min-width:768px){ .pt2-sheet{ left:50%; right:auto; width:min(560px,94vw); border-radius:26px; bottom:4vh; max-height:88vh; transform:translate(-50%,120%); } .pt2-sheet.open{ transform:translate(-50%,0); } }
@media (min-width:768px){ .pt2-grab{ display:none; } }

.pt2-ph{ display:flex; gap:13px; align-items:center; flex-wrap:wrap; }
.pt2-tile{ --h:215; width:92px; height:92px; border-radius:20px; flex:none; position:relative; display:flex; flex-direction:column; align-items:center; justify-content:center;
  color:#fff; background:linear-gradient(145deg,hsl(var(--h) 75% 60%),hsl(calc(var(--h) + 28) 72% 42%)); box-shadow:0 10px 24px hsl(var(--h) 70% 40% / .4), inset 0 1px 0 rgba(255,255,255,.5); }
.pt2-tile i{ position:absolute; top:7px; left:10px; font-style:normal; font-size:14px; font-weight:700; opacity:.9; }
.pt2-tile strong{ font-size:40px; line-height:1; } .pt2-tile small{ font-size:11.5px; opacity:.9; margin-top:4px; }
.pt2-pn{ flex:1; min-width:140px; } .pt2-pn h3{ margin:0; font-size:23px; color:var(--pt-ink); } .pt2-pn p{ margin:0 0 6px; color:var(--pt-mut); font-size:14px; }
.pt2-tag{ display:inline-block; padding:2px 11px; border-radius:16px; font-size:12.5px; font-weight:700; background:hsl(var(--h) 80% 90%); color:hsl(var(--h) 55% 28%); }
html[data-theme="dark"] .pt2-tag{ background:hsl(var(--h) 45% 26%); color:hsl(var(--h) 90% 88%); }
.pt2-pt{ display:flex; gap:7px; align-items:center; }
.pt2-pt .pt2-ib{ height:40px; min-width:40px; padding:0; border-radius:50%; font-size:17px; }
.pt2-pt .pt2-ib[disabled]{ opacity:.35; }
.pt2-qa{ display:flex; gap:7px; flex-wrap:wrap; margin:13px 0 4px; }
.pt2-qa .pt2-ib{ height:38px; font-size:13.5px; padding:0 12px; border-radius:19px; }
.pt2-ci{ animation:pt2-fade .28s; } .pt2-ci.sl{ animation:pt2-sl .3s cubic-bezier(.2,.9,.3,1); } .pt2-ci.sr{ animation:pt2-sr .3s cubic-bezier(.2,.9,.3,1); }
@keyframes pt2-sl{ from{ opacity:0; transform:translateX(34px);} to{ opacity:1; transform:none; } }
@keyframes pt2-sr{ from{ opacity:0; transform:translateX(-34px);} to{ opacity:1; transform:none; } }

.pt2-h4{ margin:18px 0 8px; font-size:13px; font-weight:800; letter-spacing:.3px; color:var(--pt-accent); display:flex; align-items:center; gap:7px; }
.pt2-h4::after{ content:''; flex:1; height:1px; background:var(--pt-line); }
.pt2-atom{ display:flex; gap:14px; align-items:center; flex-wrap:wrap; justify-content:center; padding:10px; border-radius:18px; background:radial-gradient(circle at 50% 50%,hsl(var(--h) 70% 50% / .13),transparent 70%), var(--pt-glass); border:1px solid var(--pt-line); }
.pt2-atom svg.bohr{ width:min(100%,230px); height:auto; aspect-ratio:1; overflow:visible; }
.bohr .orb{ fill:none; stroke:hsl(var(--h) 40% 55% / .35); stroke-width:.8; stroke-dasharray:2 3; }
.bohr .rot{ transform-origin:110px 110px; animation:pt2-spin var(--d,12s) linear infinite; }
.bohr .rot.rev{ animation-direction:reverse; }
.bohr text{ font-family:inherit; text-anchor:middle; fill:#fff; font-weight:800; }
@keyframes pt2-spin{ to{ transform:rotate(360deg); } }
.pt2-shl{ display:flex; flex-direction:column; gap:3px; min-width:120px; flex:1; max-width:220px; }
.pt2-shl div{ display:flex; align-items:center; gap:8px; font-size:13px; }
.pt2-shl b{ width:20px; height:20px; border-radius:6px; display:grid; place-items:center; background:hsl(var(--h) 70% 55% / .2); font-size:11.5px; }
.pt2-shl span{ color:var(--pt-mut); } .pt2-shl em{ font-style:normal; font-weight:800; margin-left:auto; }

.pt2-bars{ display:grid; gap:10px; }
.pt2-bar1{ padding:10px 12px; border-radius:14px; background:var(--pt-glass); border:1px solid var(--pt-line); }
.pt2-bar1 .t{ display:flex; justify-content:space-between; gap:8px; font-size:13px; color:var(--pt-mut); margin-bottom:6px; }
.pt2-bar1 .t b{ color:var(--pt-ink); font-size:14.5px; }
.pt2-track{ position:relative; height:10px; border-radius:7px; background:color-mix(in srgb,var(--pt-mut) 22%,transparent); overflow:visible; }
.pt2-fill{ height:100%; border-radius:7px; background:linear-gradient(90deg,hsl(var(--h) 80% 62%),hsl(calc(var(--h) + 35) 80% 52%)); width:0; transition:width .7s cubic-bezier(.2,.9,.3,1); }
.pt2-med{ position:absolute; top:-3px; bottom:-3px; width:2px; background:var(--pt-ink); opacity:.55; border-radius:2px; }
.pt2-bar1 .n{ font-size:12px; color:var(--pt-mut); margin-top:5px; display:flex; justify-content:space-between; gap:8px; flex-wrap:wrap; }

.pt2-pg{ display:grid; grid-template-columns:repeat(auto-fit,minmax(145px,1fr)); gap:8px; }
.pt2-pg div{ background:var(--pt-glass); border:1px solid var(--pt-line); border-radius:12px; padding:8px 11px; display:flex; flex-direction:column; gap:2px; min-width:0; }
.pt2-pg span{ font-size:12px; color:var(--pt-mut); } .pt2-pg b{ font-size:15px; overflow-wrap:anywhere; }
.pt2-mono{ font-family:'JetBrains Mono',ui-monospace,monospace; }
.pt2-tx{ background:var(--pt-glass); border:1px solid var(--pt-line); border-radius:12px; padding:9px 12px; margin-bottom:8px; }
.pt2-tx span{ display:block; font-size:12px; color:var(--pt-mut); margin-bottom:2px; } .pt2-tx p{ margin:0; font-size:14.5px; line-height:1.6; }
.pt2-note{ font-size:12.5px; color:var(--pt-mut); margin:10px 2px 0; line-height:1.6; }
.pt2-phase{ display:inline-flex; align-items:center; gap:6px; padding:4px 12px; border-radius:18px; font-weight:700; font-size:13px; color:#fff; }
.pt2-phase.s{ background:hsl(215 70% 52%); } .pt2-phase.l{ background:hsl(38 85% 46%); } .pt2-phase.g{ background:hsl(285 60% 55%); } .pt2-phase.u{ background:#7b8499; }

/* ---------- সাধারণ ডায়ালগ (তুলনা, কুইজ, শেয়ার) ---------- */
.pt2-dlg{ position:fixed; z-index:10061; left:0; right:0; bottom:0; max-height:94vh; max-height:94dvh; display:flex; flex-direction:column; background:var(--pt-sheet,#fff); color:var(--pt-ink); border-radius:26px 26px 0 0;
  border:1px solid var(--pt-line); box-shadow:0 -14px 50px rgba(20,24,70,.4); transform:translateY(105%); transition:transform .36s cubic-bezier(.2,.9,.25,1); }
.pt2-dlg.open{ transform:none; }
@media (min-width:768px){ .pt2-dlg{ left:50%; right:auto; bottom:auto; top:50%; width:min(720px,94vw); max-height:90vh; border-radius:24px; transform:translate(-50%,-44%) scale(.96); opacity:0; transition:transform .28s,opacity .28s; } .pt2-dlg.open{ transform:translate(-50%,-50%); opacity:1; } }
.pt2-dh{ display:flex; align-items:center; gap:10px; padding:14px 16px 8px; flex:none; }
.pt2-dh h3{ margin:0; flex:1; font-size:18px; color:var(--pt-ink); }
.pt2-db{ overflow-y:auto; padding:4px 16px calc(20px + env(safe-area-inset-bottom)); -webkit-overflow-scrolling:touch; }
.pt2-ov2{ z-index:10060; }
.pt2-seg{ display:inline-flex; padding:3px; border-radius:12px; background:var(--pt-glass2); gap:2px; margin-bottom:12px; max-width:100%; overflow-x:auto; }
.pt2-seg button{ border:none; background:transparent; color:var(--pt-mut); padding:7px 14px; border-radius:10px; font-size:14px; font-weight:700; cursor:pointer; white-space:nowrap; }
.pt2-seg button.on{ background:var(--pt-accent); color:#fff; box-shadow:0 3px 10px color-mix(in srgb,var(--pt-accent) 40%,transparent); }
.pt2-cmp{ width:100%; border-collapse:separate; border-spacing:0 5px; }
.pt2-cmp td{ padding:7px 9px; font-size:14px; background:var(--pt-glass); }
.pt2-cmp td:first-child{ border-radius:10px 0 0 10px; color:var(--pt-mut); font-size:12.5px; width:34%; } .pt2-cmp td:last-child{ border-radius:0 10px 10px 0; }
.pt2-cmp td.w{ font-weight:800; color:var(--pt-accent); }
.pt2-vs{ display:grid; grid-template-columns:1fr auto 1fr; gap:8px; align-items:center; margin-bottom:12px; }
.pt2-vs .c{ text-align:center; padding:10px 6px; border-radius:16px; background:var(--pt-glass); border:2px solid transparent; }
.pt2-vs .c.a{ border-color:#f59e0b; } .pt2-vs .c.b{ border-color:#10b981; }
.pt2-vs .c h4{ margin:4px 0 0; font-size:16px; } .pt2-vs .c small{ color:var(--pt-mut); }
.pt2-vs .c svg.bohr{ width:min(100%,150px); }
.pt2-vs .x{ font-weight:900; color:var(--pt-mut); }
.pt2-2bar{ margin-bottom:10px; } .pt2-2bar .t{ font-size:13px; color:var(--pt-mut); margin-bottom:3px; }
.pt2-2bar .r{ display:flex; align-items:center; gap:8px; font-size:12.5px; margin:3px 0; } .pt2-2bar .r .tr{ flex:1; height:9px; border-radius:6px; background:color-mix(in srgb,var(--pt-mut) 20%,transparent); } .pt2-2bar .r i{ display:block; height:100%; border-radius:6px; transition:width .6s; }
.pt2-2bar .r b{ min-width:64px; text-align:right; }
.pt2-qz-top{ display:flex; gap:8px; align-items:center; flex-wrap:wrap; margin-bottom:10px; }
.pt2-prog{ height:7px; border-radius:5px; background:color-mix(in srgb,var(--pt-mut) 22%,transparent); overflow:hidden; margin:8px 0 14px; }
.pt2-prog i{ display:block; height:100%; background:linear-gradient(90deg,var(--pt-accent),#22b8cf); transition:width .35s; }
.pt2-q{ font-size:19px; font-weight:700; line-height:1.5; margin:6px 0 14px; }
.pt2-opts{ display:grid; gap:9px; grid-template-columns:1fr 1fr; } @media (max-width:420px){ .pt2-opts{ grid-template-columns:1fr; } }
.pt2-opt{ border:2px solid var(--pt-line); background:var(--pt-glass2); color:var(--pt-ink); border-radius:14px; padding:12px; font-size:16px; font-weight:600; cursor:pointer; text-align:center; transition:transform .12s,border-color .2s,background .2s; font-family:inherit; }
.pt2-opt:active{ transform:scale(.96); } .pt2-opt.ok{ border-color:#16a34a; background:rgba(22,163,74,.17); } .pt2-opt.bad{ border-color:#dc2626; background:rgba(220,38,38,.15); animation:pt2-shake .35s; } .pt2-opt[disabled]{ cursor:default; }
@keyframes pt2-shake{ 25%{ transform:translateX(-5px);} 75%{ transform:translateX(5px);} }
.pt2-fb{ margin-top:12px; padding:9px 12px; border-radius:12px; font-size:14px; background:var(--pt-glass); line-height:1.6; }
.pt2-score{ text-align:center; padding:18px 8px; } .pt2-score .big{ font-size:46px; font-weight:900; color:var(--pt-accent); } .pt2-score p{ color:var(--pt-mut); margin:4px 0 14px; }
.pt2-fc{ perspective:1000px; margin:6px auto 14px; max-width:340px; }
.pt2-fci{ position:relative; height:230px; transform-style:preserve-3d; transition:transform .55s cubic-bezier(.3,1.2,.4,1); cursor:pointer; }
.pt2-fci.flip{ transform:rotateY(180deg); }
.pt2-fcf,.pt2-fcb{ position:absolute; inset:0; backface-visibility:hidden; -webkit-backface-visibility:hidden; border-radius:22px; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px; padding:14px; text-align:center;
  background:linear-gradient(145deg,hsl(var(--h) 75% 60%),hsl(calc(var(--h) + 28) 72% 40%)); color:#fff; box-shadow:0 14px 34px hsl(var(--h) 70% 35% / .4); }
.pt2-fcb{ transform:rotateY(180deg); } .pt2-fcf strong{ font-size:76px; line-height:1; } .pt2-fcf .nm2{ font-size:40px; font-weight:800; }
.pt2-fcb b{ font-size:26px; } .pt2-fcb small{ font-size:14px; opacity:.92; line-height:1.6; }
.pt2-fcbtn{ display:flex; gap:10px; justify-content:center; } .pt2-fcbtn .pt2-ib{ min-width:120px; height:46px; font-size:15px; }
.pt2-fcbtn .ok{ background:#16a34a; color:#fff; border-color:transparent; } .pt2-fcbtn .re{ background:#f59e0b; color:#3b2a00; border-color:transparent; }
.pt2-share img{ display:block; width:100%; max-width:380px; margin:0 auto 14px; border-radius:18px; box-shadow:0 12px 34px rgba(0,0,0,.3); }
.pt2-share .row{ display:flex; gap:9px; justify-content:center; flex-wrap:wrap; }
.pt2-share .pt2-ib{ background:var(--pt-accent); color:#fff; border-color:transparent; padding:0 16px; }
.pt2-share .pt2-ib.alt{ background:var(--pt-glass2); color:var(--pt-ink); border-color:var(--pt-line); }
.pt2-empty{ padding:24px; text-align:center; color:var(--pt-mut); }

body.pt2-lock{ overflow:hidden; }
@media (prefers-reduced-motion:reduce){ .bohr .rot{ animation:none; } .pt2-el,.pt2-sheet,.pt2-dlg,.pt2-fill,.pt2-fci{ transition:none; } .pt2-el.hit,.pt2-el.pop{ animation:none; } }
@media print{ .pt2-ov,.pt2-sheet,.pt2-dlg{ display:none !important; } }


@media (max-width:767px){ .pt2-inline{ display:none; } }

@media (min-width:900px){
  .pt2-inline .pt2-ci{ display:grid; grid-template-columns:minmax(300px,400px) 1fr; column-gap:26px; }
  .pt2-inline .pt2-ph,.pt2-inline .pt2-qa{ grid-column:1/-1; }
  .pt2-inline .pt2-c1 .pt2-h4:first-child,.pt2-inline .pt2-c2 .pt2-h4:first-child{ margin-top:6px; }
  .pt2-inline .pt2-atom{ flex-direction:column; }
}
.pt2 .pt2-h4,.pt2-sheet .pt2-h4,.pt2-dlg .pt2-h4{ color:var(--pt-accent); }
/* অ্যাপের গ্লোবাল h3/h4 রং যেন এখানে না ঢোকে */
.pt2 h2,.pt2 h3,.pt2 h4,.pt2-sheet h3,.pt2-sheet h4,.pt2-dlg h3,.pt2-dlg h4{ font-family:inherit; }
.pt2-dh h3,.pt2-pn h3,.pt2-vs h4,.pt2-today h3{ color:var(--pt-ink) !important; }
.pt2-h4{ color:var(--pt-accent) !important; }
.pt2-hero h2{ color:#fff !important; }
.pt2-dh h3,.pt2-pn h3,.pt2-vs h4,.pt2-today h3,.pt2-h4,.pt2-hero h2{ background:none !important; -webkit-background-clip:border-box !important; background-clip:border-box !important; -webkit-text-fill-color:currentColor !important; text-shadow:none !important; }
@media (max-width:600px){
  .pt2-legend{ flex-wrap:nowrap; overflow-x:auto; padding-bottom:4px; scrollbar-width:none; } .pt2-leg{ flex:none; }
  .pt2-bar{ padding:8px; gap:6px; } .pt2-search{ flex-basis:100%; } .pt2-sel{ flex:1; min-width:0; }
  .pt2-hero{ padding:14px; } .pt2-hero h2{ font-size:20px; }
}
/* প্রবণতা অ্যানিমেশন ও বিন্যাস অনুশীলন */
.pt2-trwrap{ overflow-x:auto; padding:6px 2px 10px; }
.pt2-trgrid{ --cell:34px; display:grid; grid-template-columns:repeat(18,var(--cell)); grid-auto-rows:calc(var(--cell) * 1.1); gap:3px; width:max-content; margin:0 auto; }
.pt2-trgrid .tc{ cursor:default; transition:opacity .35s,transform .35s; } .pt2-trgrid .tc:hover{ transform:none; }
.pt2-trgrid .tc b{ font-size:12px; } .pt2-trgrid .tc .nm{ font-size:8px; opacity:.8; }
.pt2-trgrid .tc.off{ opacity:.1; transform:scale(.9); } .pt2-trgrid .tc.lit{ opacity:1; animation:pt2-pop .5s cubic-bezier(.3,1.5,.5,1); }
.pt2-orbs{ display:grid; gap:7px; }
.pt2-orb{ display:flex; align-items:center; gap:10px; padding:6px 10px; border-radius:12px; background:var(--pt-glass); border:2px solid transparent; }
.pt2-orb b{ width:30px; font-size:16px; } .pt2-orb .dots{ display:flex; flex-wrap:wrap; gap:6px; flex:1; } .pt2-orb em{ font-style:normal; font-weight:800; min-width:48px; text-align:right; }
.pt2-orb.ok{ border-color:#16a34a; background:rgba(22,163,74,.12); } .pt2-orb.bad{ border-color:#dc2626; background:rgba(220,38,38,.1); }
.pt2-dot{ width:28px; height:28px; border-radius:50%; border:2px dashed var(--pt-mut); background:transparent; padding:0; cursor:pointer; transition:transform .12s,background .2s; }
.pt2-dot:active{ transform:scale(.85); } .pt2-dot.on{ border:2px solid var(--pt-accent); background:radial-gradient(circle at 35% 30%,#fff,var(--pt-accent) 55%,#3b2fc9); }
@media (max-width:480px){ .pt2-trgrid{ --cell:24px; } .pt2-dot{ width:24px; height:24px; } .pt2-trgrid .tc b{ font-size:9px; } .pt2-trgrid .tc .nm{ display:none !important; } }
/* শিখা পরীক্ষা, মাইক */
.pt2-mic{ border:none; background:transparent; font-size:18px; cursor:pointer; padding:0 2px; line-height:1; } .pt2-mic.rec{ animation:pt2-pulse 1s infinite; filter:drop-shadow(0 0 6px #ef4444); }
.pt2-fstage{ position:relative; height:210px; display:grid; place-items:center; border-radius:20px; background:radial-gradient(circle at 50% 80%,color-mix(in srgb,var(--fc) 30%,#0b0e22) 0,#0b0e22 70%); overflow:hidden; margin-bottom:8px; }
.pt2-flame{ width:130px; height:175px; margin-bottom:22px; filter:drop-shadow(0 0 22px var(--fc)); }
.pt2-flame .fl{ animation:pt2-flick 1.1s ease-in-out infinite alternate; } .pt2-flame .fl2{ animation:pt2-flick 0.8s ease-in-out infinite alternate-reverse; }
.pt2-burner{ position:absolute; bottom:0; width:56px; height:26px; border-radius:6px 6px 0 0; background:linear-gradient(90deg,#555,#999,#555); }
@keyframes pt2-flick{ from{ transform:scale(1,.94) skewX(-2deg); } to{ transform:scale(.96,1.05) skewX(3deg); } }
.pt2-fpick{ display:flex; flex-wrap:wrap; gap:6px; justify-content:center; }
@media (prefers-reduced-motion:reduce){ .pt2-flame .fl,.pt2-flame .fl2{ animation:none; } }
/* লাইভ বিন্যাস */
.pt2-livecfg{ font-size:20px; line-height:1.9; display:flex; flex-wrap:wrap; gap:6px 12px; } .pt2-livecfg span{ padding:0 4px; border-radius:6px; } .pt2-livecfg span.hl{ background:var(--pt-accent); color:#fff; animation:pt2-pop .5s; }
.pt2-obs{ display:grid; gap:6px; } .pt2-obrow{ display:flex; align-items:center; gap:10px; padding:5px 8px; border-radius:10px; background:var(--pt-glass); } .pt2-obrow.hl{ outline:2px solid var(--pt-accent); }
.pt2-obrow b{ width:26px; } .pt2-obrow .obs{ display:flex; gap:5px; flex-wrap:wrap; flex:1; } .pt2-obrow em{ font-style:normal; font-weight:800; min-width:24px; text-align:right; }
.pt2-ob{ display:inline-flex; border:2px solid var(--pt-mut); border-radius:6px; overflow:hidden; } .pt2-ob i{ font-style:normal; width:18px; height:26px; display:grid; place-items:center; font-size:16px; font-weight:800; color:transparent; } .pt2-ob i.on{ color:var(--pt-accent); } .pt2-ob.pair{ border-color:var(--pt-accent); }
/* অ্যাপের h4/h3 স্টাইল (স্বচ্ছ রং/গ্রেডিয়েন্ট) ঠেকাতে স্পষ্ট ফিল-রং */
.pt2 .pt2-h4,.pt2-sheet .pt2-h4,.pt2-dlg .pt2-h4,.pt2-inline .pt2-h4{ color:var(--pt-accent) !important; -webkit-text-fill-color:var(--pt-accent) !important; }
.pt2-dlg .pt2-dh h3,.pt2 .pt2-pn h3,.pt2-sheet .pt2-pn h3,.pt2-dlg .pt2-vs h4,.pt2 .pt2-today h3{ color:var(--pt-ink) !important; -webkit-text-fill-color:var(--pt-ink) !important; }
.pt2 .pt2-hero h2{ color:#fff !important; -webkit-text-fill-color:#fff !important; }

/* ===== প্রাচুর্য · যৌগ · সময়রেখা · স্ক্যাটার ===== */
.pt2-chips{ display:flex; flex-wrap:wrap; gap:7px; }
.pt2-chip{ display:inline-flex; flex-direction:column; align-items:flex-start; gap:1px; padding:7px 11px; border-radius:12px; border:1px solid var(--pt-line); background:var(--pt-glass); color:var(--pt-ink); font-family:inherit; font-size:12.5px; cursor:pointer; text-align:left; line-height:1.3; }
.pt2-chip b{ font-size:14px; letter-spacing:.2px; } .pt2-chip span{ color:var(--pt-mut); font-size:11.5px; }
.pt2-chip:hover{ border-color:var(--pt-accent); }
.pt2-prs .pt2-chip{ flex-direction:row; padding:6px 10px; font-size:12.5px; }
.pt2-cprow{ display:flex; gap:10px; align-items:flex-end; flex-wrap:wrap; margin-bottom:12px; }
.pt2-cprow label{ display:flex; flex-direction:column; gap:4px; font-size:12px; color:var(--pt-mut); flex:1; min-width:130px; } .pt2-cprow .pt2-sel{ width:100%; }
.pt2-cpvis{ display:flex; align-items:center; justify-content:center; gap:14px; margin:6px 0 14px; }
.pt2-cpvis b{ font-size:26px; color:var(--pt-mut); }
.pt2-cpvis .pt2-tile{ width:68px; height:68px; border-radius:16px; position:relative; }
.pt2-ccard{ display:flex; gap:14px; align-items:center; padding:12px 14px; border-radius:16px; background:var(--pt-glass); border:1px solid var(--pt-line); margin-bottom:9px; }
.pt2-ccard .fm{ font-size:22px; font-weight:800; min-width:84px; text-align:center; color:var(--pt-accent); letter-spacing:.3px; word-break:break-all; }
.pt2-ccard h4{ margin:0 0 3px !important; font-size:15px !important; color:var(--pt-ink) !important; -webkit-text-fill-color:var(--pt-ink) !important; background:none !important; }
.pt2-ccard .bd{ display:inline-block; font-size:11.5px; font-weight:700; padding:2px 9px; border-radius:99px; background:color-mix(in srgb,var(--pt-accent) 16%,transparent); color:var(--pt-accent); }
.pt2-ccard.i .bd{ background:rgba(240,140,40,.16); color:#d9730d; } .pt2-ccard.c .bd{ background:rgba(40,160,120,.16); color:#14966b; } .pt2-ccard.m .bd{ background:rgba(90,110,200,.16); color:#4e63c9; }
.pt2-ccard p{ margin:5px 0 0; font-size:13px; color:var(--pt-mut); line-height:1.55; }
.pt2-tlyear{ display:flex; align-items:baseline; gap:10px; margin-left:auto; } .pt2-tlyear b{ font-size:28px; color:var(--pt-accent); } .pt2-tlyear small{ color:var(--pt-mut); font-size:13px; }
.pt2-tl .pt2-range{ width:100%; margin:4px 0 10px; }
svg.pt2-sc{ width:100%; height:auto; display:block; border-radius:14px; background:var(--pt-glass); border:1px solid var(--pt-line); touch-action:manipulation; cursor:crosshair; }
svg.pt2-sc .gl{ stroke:var(--pt-line); stroke-width:1; } svg.pt2-sc .ax{ stroke:var(--pt-mut); stroke-width:1.3; }
svg.pt2-sc .tk{ fill:var(--pt-mut); font-size:11px; } svg.pt2-sc .al{ fill:var(--pt-ink); font-size:12.5px; font-weight:700; }
svg.pt2-sc .ln{ fill:none; stroke-width:1.6; opacity:.55; stroke-linejoin:round; }
svg.pt2-sc .pt{ stroke:#fff; stroke-width:1.3; } svg.pt2-sc .pt.sel{ stroke:var(--pt-ink); stroke-width:2.2; }
svg.pt2-sc .sy{ fill:var(--pt-ink); font-size:10px; font-weight:700; pointer-events:none; }
.pt2-scinfo{ display:flex; gap:12px; align-items:center; margin-top:10px; padding:10px 12px; border-radius:14px; background:var(--pt-glass); border:1px solid var(--pt-line); font-size:13.5px; line-height:1.6; }
.pt2-scinfo > div:nth-child(2){ flex:1; } .pt2-scinfo small{ color:var(--pt-mut); }
.pt2-chk{ display:inline-flex; align-items:center; gap:5px; font-size:13px; color:var(--pt-ink); } .pt2-chk.dis{ opacity:.45; }
.pt2-chk{ white-space:nowrap; } .pt2-chk input{ width:auto !important; margin:0 !important; height:auto !important; }
.pt2-cpvis .pt2-tile i{ font-size:11px; top:6px; left:9px; } .pt2-cpvis .pt2-tile strong{ font-size:28px; }

/* লাইভ ইলেকট্রন বিন্যাস */
.pt2-lvo{ width:32px; height:36px; border:2px dashed var(--pt-mut); border-radius:8px; display:inline-flex; align-items:center; justify-content:center; transition:background .2s,border-color .2s; }
.pt2-lvo.on{ border-style:solid; border-color:var(--pt-accent); background:var(--pt-glass2); }
.pt2-lvo b{ width:auto; font-size:20px; font-weight:800; line-height:1; letter-spacing:-3px; color:var(--pt-accent); }
.pt2-orb.cur{ border-color:var(--pt-accent); }
.pt2-live .pt2-orbs{ max-height:48vh; overflow-y:auto; }