/* ==========================================================================
   মাদরাসা বায়তুল হিকমাহ — luxury blue & green design system
   Only blue + green (plus white). Light teal/mint page tone, Islamic geometric
   pattern, glossy gradient buttons / icons / borders.
   ========================================================================== */
@font-face{font-family:"Hind Siliguri";font-weight:400;font-display:swap;size-adjust:100.0%;ascent-override:92%;descent-override:24%;line-gap-override:0%;src:url(../fonts/HindSiliguri-bn-400.woff2) format("woff2");unicode-range:U+0951-0952,U+0964-0965,U+0980-09FE,U+200C-200D,U+20B9,U+25CC}
@font-face{font-family:"Hind Siliguri";font-weight:500 700;font-display:swap;size-adjust:100.0%;ascent-override:92%;descent-override:24%;line-gap-override:0%;src:url(../fonts/HindSiliguri-bn-600.woff2) format("woff2");unicode-range:U+0951-0952,U+0964-0965,U+0980-09FE,U+200C-200D,U+20B9,U+25CC}
@font-face{font-family:"Noto Serif Bengali";font-weight:400 700;font-display:optional;size-adjust:100.0%;ascent-override:95%;descent-override:25%;line-gap-override:0%;src:url(../fonts/NotoSerifBengali-bn.woff2) format("woff2");unicode-range:U+0951-0952,U+0964-0965,U+0980-09FE,U+200C-200D,U+20B9,U+25CC}
@font-face{font-family:"Noto Serif Bengali";font-weight:100 900;font-display:swap;size-adjust:100.0%;ascent-override:95%;descent-override:25%;line-gap-override:0%;src:url(../fonts/NotoSerifBengali-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+20AC}
@font-face{font-family:"Inter";font-weight:100 900;font-display:swap;size-adjust:100.0%;ascent-override:90%;descent-override:22%;line-gap-override:0%;src:url(../fonts/Inter-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+20AC}
@font-face{font-family:"Amiri";font-weight:400;font-display:swap;src:url(../fonts/Amiri-400-ar.woff2) format("woff2");unicode-range:U+0600-06FF,U+0750-077F,U+FB50-FDFF,U+FE70-FEFF}
@font-face{font-family:"Amiri";font-weight:700;font-display:swap;src:url(../fonts/Amiri-700-ar.woff2) format("woff2");unicode-range:U+0600-06FF,U+0750-077F,U+FB50-FDFF,U+FE70-FEFF}

:root{
  /* page tone: golden hour (champagne / pale amber) — blue removed from the whole site (2026-10-04) */
  --bg-a:#faf0db; --bg-b:#f4e4c4; --bg-c:#f8ecd2; --mint:#f1e2bd; --mint-2:#ead7a8; --paper:#fffaf0; --cream:#fffaf0; --cream-2:#fbf0d9;
  /* "b" ramp = deep FOREST green (was blue), "g" ramp = emerald green */
  --b900:#06301f; --b800:#0a4430; --b700:#0f5a3f; --b600:#17714f; --b500:#228c62; --b400:#4aa77d; --b300:#94d0b0; --b200:#c9e5d3; --b100:#f9eed6;
  --g900:#033b2d; --g800:#04523d; --g700:#066e53; --g600:#0a8a63; --g500:#16a579; --g400:#38c096; --g300:#7fdcbc; --g200:#bdeedb; --g100:#f3efd6;
  --ink:#14281f; --ink-2:#3a4f43; --ink-3:#556a5c;
  --line-b:#0f5a3f;
  /* silver (buttons / controls) */
  --grad-s:linear-gradient(180deg,#fdfcfa 0%,#ecebe8 44%,#c9c9c5 56%,#e2e1de 100%);
  --silver-line:#8f918b; --silver-ink:#0a3a28;
  --gold:#c9a24a; --gold-2:#e6c987; --gold-3:#f6e6bd; --line-g:#066e53;
  --grad-b:linear-gradient(180deg,#4fb088 0%,#228c62 46%,#0f5a3f 54%,#126a49 100%);
  --grad-g:linear-gradient(180deg,#46d1a4 0%,#13a176 46%,#066e53 54%,#0a8160 100%);
  --grad-bg:linear-gradient(135deg,#0f5a3f,#066e53);
  --shadow-1:0 6px 18px rgba(6,48,31,.14);
  --shadow-2:0 18px 44px rgba(6,48,31,.20);
  --gloss:inset 0 1px 0 rgba(255,255,255,.75),inset 0 -2px 0 rgba(0,0,0,.16);
  --r:20px; --r-s:12px;
  --nav-h:72px; --tab-h:0px;
  --font:"Hind Siliguri","Noto Sans Bengali","Inter","Segoe UI",system-ui,sans-serif;
  --font-h:"Noto Serif Bengali","Hind Siliguri","Inter",Georgia,serif;
  --font-ar:"Amiri","Noto Naskh Arabic","Traditional Arabic",serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:clamp(16px,.42vw + 12.8px,28px)}
body{font-family:var(--font);color:var(--ink);line-height:1.75;font-size:1.04rem;min-height:100vh;overflow-x:hidden;
  background:linear-gradient(155deg,var(--bg-a) 0%,var(--bg-b) 48%,var(--bg-c) 100%) fixed;position:relative}
/* Islamic geometric pattern layer */
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background:url(../assets/pattern-gold.svg) 0 0/120px 120px;opacity:.95;
  -webkit-mask-image:radial-gradient(130% 90% at 50% 20%,#000 40%,rgba(0,0,0,.55) 100%);mask-image:radial-gradient(130% 90% at 50% 20%,#000 40%,rgba(0,0,0,.55) 100%)}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(900px 500px at 12% -5%,rgba(74,167,125,.18),transparent 70%),radial-gradient(900px 560px at 95% 12%,rgba(22,165,121,.16),transparent 70%)}
img,svg{max-width:100%;display:block}
a{color:var(--b700);text-decoration:none}
a:hover{color:var(--g700)}
ul{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--g500);outline-offset:2px;border-radius:8px}
h1,h2,h3,h4{font-family:var(--font-h);color:var(--b900);line-height:1.35;font-weight:700}
h1{font-size:clamp(1.9rem,3.6vw + .6rem,3.6rem)}
h2{font-size:clamp(1.55rem,2.2vw + .6rem,2.5rem)}
h3{font-size:clamp(1.15rem,1vw + .8rem,1.5rem)}
p{color:var(--ink-2)}
.ar{font-family:var(--font-ar);direction:rtl}
.container{width:min(1240px,92%);margin-inline:auto}
@media (min-width:1600px){.container{width:min(1560px,88%)}}
@media (min-width:2300px){.container{width:min(2100px,84%)}}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;z-index:200;background:var(--b800);color:#fff;padding:.5rem 1rem;border-radius:10px}
.skip:focus{left:8px}

/* ---------- glossy buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:46px;padding:.6rem 1.5rem;border-radius:999px;border:1px solid var(--b900);
  background:var(--grad-b);color:#fff!important;font-weight:600;font-size:1rem;cursor:pointer;overflow:hidden;isolation:isolate;text-shadow:0 1px 1px rgba(0,0,0,.35);
  box-shadow:0 8px 18px rgba(6,48,31,.30),var(--gloss);transition:transform .2s,box-shadow .2s,filter .2s;text-align:center;line-height:1.3}
.btn::before{content:"";position:absolute;left:3px;right:3px;top:2px;height:48%;border-radius:999px 999px 40% 40%;background:linear-gradient(180deg,rgba(255,255,255,.62),rgba(255,255,255,.06));z-index:-1;pointer-events:none}
.btn::after{content:"";position:absolute;top:0;left:-70%;width:45%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-20deg);transition:left .6s;z-index:-1;pointer-events:none}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 12px 26px rgba(6,48,31,.36),var(--gloss)}
.btn:hover::after{left:130%}
.btn:active{transform:translateY(0) scale(.98)}
.btn.green{background:var(--grad-g);border-color:var(--g900);box-shadow:0 8px 18px rgba(4,82,61,.30),var(--gloss)}
.btn.green:hover{box-shadow:0 12px 26px rgba(4,82,61,.38),var(--gloss)}
.btn.ghost{background:linear-gradient(180deg,#fff,var(--cream-2));color:var(--b800)!important;text-shadow:none;border:1.5px solid var(--b700);box-shadow:0 4px 12px rgba(6,48,31,.14),inset 0 1px 0 #fff}
.btn.ghost::before{background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(255,255,255,0))}
.btn.sm{min-height:38px;padding:.35rem 1.05rem;font-size:.92rem}
.btn.lg{min-height:54px;padding:.75rem 2rem;font-size:1.1rem}
.btn[disabled]{opacity:.55;pointer-events:none}
.btn svg{width:1.15em;height:1.15em;flex:none}

/* ---------- glossy icon badges ---------- */
.ico{position:relative;display:inline-grid;place-items:center;width:54px;height:54px;border-radius:16px;background:var(--grad-b);color:#fff;flex:none;
  border:1px solid var(--b900);box-shadow:0 6px 14px rgba(6,48,31,.28),var(--gloss);overflow:hidden}
.ico::before{content:"";position:absolute;inset:2px 2px 50% 2px;border-radius:14px 14px 40% 40%;background:linear-gradient(180deg,rgba(255,255,255,.6),rgba(255,255,255,.04))}
.ico svg{position:relative;width:60%;height:60%;filter:drop-shadow(0 1px 1px rgba(0,0,0,.3))}
.ico.g{background:var(--grad-g);border-color:var(--g900);box-shadow:0 6px 14px rgba(4,82,61,.28),var(--gloss)}
.ico.round{border-radius:50%}
.ico.lg{width:72px;height:72px;border-radius:22px}

/* ---------- surfaces: gradient (green→gold) borders ---------- */
.card{position:relative;border-radius:var(--r);padding:1.4rem;border:1.6px solid transparent;
  background:linear-gradient(rgba(255,253,246,.88),rgba(253,247,232,.84)) padding-box,linear-gradient(135deg,var(--b700),var(--g700)) border-box;
  box-shadow:var(--shadow-1);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card.flat:hover{transform:none;box-shadow:var(--shadow-1)}
.card::after{content:"";position:absolute;left:14px;right:14px;top:0;height:3px;border-radius:0 0 6px 6px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent);pointer-events:none}
.glass-dark{background:linear-gradient(160deg,var(--b800),var(--g800));color:#e9fbf5;border-radius:var(--r);position:relative;overflow:hidden;box-shadow:var(--shadow-2);border:1px solid rgba(255,255,255,.25)}
.glass-dark::before{content:"";position:absolute;inset:0;background:url(../assets/pattern-dark.svg) 0 0/120px 120px;opacity:.9;pointer-events:none}
.glass-dark>*{position:relative}
.glass-dark h2,.glass-dark h3,.glass-dark p{color:#f1fffa}

/* ---------- ornament divider + section heads ---------- */
.orn{display:flex;align-items:center;gap:.8rem;justify-content:center;margin:.4rem auto 1rem;max-width:420px;color:var(--g700)}
.orn::before,.orn::after{content:"";height:2px;flex:1;background:linear-gradient(90deg,transparent,var(--b600),var(--g600))}
.orn::after{transform:scaleX(-1)}
.orn svg{width:26px;height:26px;flex:none}
section{padding:clamp(2.6rem,5vw,5rem) 0;position:relative}
.sec-head{text-align:center;max-width:820px;margin:0 auto clamp(1.6rem,3vw,2.6rem)}
.eyebrow{display:inline-block;font-weight:600;font-size:.85rem;letter-spacing:.04em;color:var(--g800);padding:.2rem 1rem;border-radius:999px;margin-bottom:.6rem;
  background:linear-gradient(180deg,#fff,var(--g100));border:1.5px solid var(--g700);box-shadow:inset 0 1px 0 #fff}
.sec-head p.lead{font-size:1.1rem;margin-top:.5rem}
.lead{font-size:1.12rem}
.grid{display:grid;gap:clamp(1rem,2vw,1.6rem)}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(100%,235px),1fr))}
.chip{display:inline-flex;align-items:center;gap:.35rem;padding:.25rem .9rem;border-radius:999px;font-size:.88rem;font-weight:600;cursor:pointer;color:var(--b800);
  background:linear-gradient(180deg,#fff,var(--b100));border:1.5px solid var(--b600);box-shadow:inset 0 1px 0 #fff;transition:.2s}
.chip:hover,.chip.on{background:var(--grad-b);color:#fff;border-color:var(--b900);text-shadow:0 1px 1px rgba(0,0,0,.3)}
.chip.g{color:var(--g800);border-color:var(--g700);background:linear-gradient(180deg,#fff,var(--g100))}
.chip.g.on,.chip.g:hover{background:var(--grad-g);color:#fff;border-color:var(--g900)}
.note{font-size:.88rem;color:var(--ink-3);padding:.6rem .9rem;border-radius:12px;background:rgba(255,255,255,.7);border:1.5px dashed var(--g700)}
.ph{display:inline-block;padding:0 .5rem;border-radius:8px;background:var(--b100);border:1px dashed var(--b600);color:var(--b800);font-weight:600}
.tag{display:inline-block;font-size:.78rem;font-weight:700;padding:.05rem .65rem;border-radius:999px;color:#fff;background:var(--grad-g);border:1px solid var(--g900);text-shadow:0 1px 1px rgba(0,0,0,.3)}
.tag.b{background:var(--grad-b);border-color:var(--b900)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:linear-gradient(180deg,rgba(255,252,243,.93),rgba(250,240,218,.9));backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:2px solid transparent;border-image:linear-gradient(90deg,var(--b700),var(--g600),var(--b700)) 1;box-shadow:0 6px 24px rgba(6,48,31,.10)}
.nav-in{height:var(--nav-h);display:flex;align-items:center;gap:1rem}
.logo{display:flex;align-items:center;gap:.7rem;color:var(--b900)!important;flex:none}
.logo img{width:46px;height:46px;border-radius:14px;box-shadow:none}
.logo b{display:block;font-family:var(--font-h);font-size:1.18rem;line-height:1.15;color:var(--b900)}
.logo small{display:block;font-size:.76rem;color:var(--g700);font-weight:600;letter-spacing:.02em}
.nav{margin-left:auto;display:flex;align-items:center;gap:.15rem}
.nav a{padding:.45rem .8rem;border-radius:999px;font-weight:600;font-size:.95rem;color:var(--b800);white-space:nowrap;transition:.2s;border:1.5px solid transparent}
.nav a:hover{background:rgba(255,255,255,.9);border-color:var(--g600);color:var(--g800)}
.nav a.active{background:var(--grad-b);color:#fff;border-color:var(--b900);text-shadow:0 1px 1px rgba(0,0,0,.3);box-shadow:var(--gloss)}
.burger{display:none;margin-left:auto;width:46px;height:46px;border-radius:14px;border:1px solid var(--b900);background:var(--grad-b);box-shadow:var(--gloss);cursor:pointer;place-items:center}
.burger span,.burger span::before,.burger span::after{display:block;width:20px;height:2.5px;background:#fff;border-radius:2px;position:relative;content:"";transition:.25s}
.burger span::before{position:absolute;top:-7px}.burger span::after{position:absolute;top:7px}
.burger[aria-expanded=true] span{background:transparent}.burger[aria-expanded=true] span::before{top:0;transform:rotate(45deg)}.burger[aria-expanded=true] span::after{top:0;transform:rotate(-45deg)}
@media (max-width:1180px){
  .burger{display:grid}
  .nav{position:fixed;left:0;right:0;top:var(--nav-h);flex-direction:column;align-items:stretch;gap:.3rem;padding:1rem 4%;max-height:calc(100dvh - var(--nav-h));overflow:auto;
    background:linear-gradient(180deg,var(--cream),var(--cream-2));border-bottom:3px solid var(--g600);box-shadow:var(--shadow-2);transform:translateY(-110%);visibility:hidden;transition:transform .3s,visibility .3s;margin:0}
  .nav.open{transform:none;visibility:visible}
  .nav a{padding:.8rem 1rem;font-size:1.05rem;border-radius:14px;background:rgba(255,255,255,.8);border-color:rgba(10,86,60,.2)}
}

/* mobile bottom tab bar (app feel) */
.tabbar{display:none}
@media (max-width:820px){
  :root{--tab-h:64px;--nav-h:64px}
  body{padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom))}
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:70;height:calc(var(--tab-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
    background:linear-gradient(180deg,rgba(255,252,243,.96),rgba(248,235,208,.97));backdrop-filter:blur(14px);border-top:2px solid var(--g600);box-shadow:0 -6px 24px rgba(6,48,31,.16)}
  .tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:.72rem;font-weight:600;color:var(--b800);line-height:1.1}
  .tabbar a svg{width:22px;height:22px}
  .tabbar a.active{color:var(--g700)}
  .tabbar a.active svg{color:var(--g600);filter:drop-shadow(0 2px 3px rgba(4,82,61,.4))}
  .tabbar a.active::before{content:"";position:absolute;top:0;width:34px;height:3px;border-radius:0 0 4px 4px;background:var(--grad-g)}
  .logo img{width:40px;height:40px}.logo b{font-size:1.05rem}.logo small{font-size:.68rem}
}

/* ---------- hero slideshow ---------- */
.hero{padding:clamp(1.4rem,3vw,3rem) 0 clamp(2rem,4vw,4rem)}
.hero-stage{position:relative;border-radius:calc(var(--r) + 10px);padding:clamp(1rem,2.2vw,2rem);border:2px solid transparent;
  background:linear-gradient(135deg,rgba(255,252,243,.78),rgba(250,240,218,.72)) padding-box,linear-gradient(135deg,var(--b700),var(--g600),var(--b700)) border-box;box-shadow:var(--shadow-2);overflow:hidden}
.hero-stage::before{content:"";position:absolute;inset:0;background:url(../assets/pattern-gold.svg) 0 0/110px 110px;opacity:.9;pointer-events:none}
.hero-slides{position:relative;display:grid}
.hero-slide{grid-area:1/1;display:grid;grid-template-columns:1.02fr 1fr;gap:clamp(1rem,3vw,3rem);align-items:center;opacity:0;visibility:hidden;transform:translateX(26px) scale(.985);transition:opacity .9s ease,transform .9s ease,visibility .9s}
.hero-slide.on{opacity:1;visibility:visible;transform:none;z-index:2}
.hero-slide.out{transform:translateX(-26px) scale(.985)}
.hero-copy{position:relative;padding:.4rem clamp(.2rem,1.5vw,1.2rem)}
.hero-copy .eyebrow{font-size:.9rem}
.hero-copy h1,.hero-copy h2.h1{font-size:clamp(1.85rem,3.1vw + .6rem,3.5rem);line-height:1.25;background:linear-gradient(100deg,var(--b800),var(--g700));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:.8rem}
.hero-copy p{font-size:clamp(1.02rem,.6vw + .9rem,1.3rem);max-width:36em;margin-bottom:1.3rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem}
.hero-art{position:relative;justify-self:center;width:min(100%,640px);aspect-ratio:5/4}
.hero-art .frame{position:absolute;inset:0;border-radius:42% 42% 24px 24px/30% 30% 24px 24px;overflow:hidden;border:3px solid transparent;
  background:linear-gradient(#0a4430,#0a4430) padding-box,linear-gradient(160deg,#9fe9cf,#4aa77d 40%,#066e53) border-box;box-shadow:0 22px 50px rgba(4,36,24,.35)}
.hero-art img{width:100%;height:100%;object-fit:cover}
.hero-art .frame::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(255,255,255,.34) 0%,rgba(255,255,255,0) 32%,rgba(255,255,255,0) 70%,rgba(255,255,255,.12) 100%);pointer-events:none}
.hero-art::before{content:"";position:absolute;inset:-12px;border-radius:inherit;border-radius:44% 44% 30px 30px/32% 32% 30px 30px;border:2px dashed rgba(6,110,83,.5);pointer-events:none}
.hero-ctrl{position:relative;z-index:3;display:flex;align-items:center;justify-content:center;gap:.8rem;margin-top:1.1rem}
.hero-dots{display:flex;gap:.55rem;align-items:center}
.hero-dots button{width:12px;height:12px;border-radius:50%;border:1.5px solid var(--b800);background:#fff;cursor:pointer;padding:0;transition:.3s;position:relative;overflow:hidden}
.hero-dots button.on{width:44px;border-radius:8px;background:rgba(10,86,60,.18)}
.hero-dots button.on::after{content:"";position:absolute;inset:0;background:var(--grad-g);transform-origin:left;animation:prog var(--dur,7s) linear forwards}
.hero.paused .hero-dots button.on::after{animation-play-state:paused}
@keyframes prog{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.arrow{width:46px;height:46px;border-radius:50%;border:1px solid var(--b900);background:var(--grad-b);color:#fff;cursor:pointer;display:grid;place-items:center;box-shadow:var(--gloss),0 6px 14px rgba(6,48,31,.3);position:relative;overflow:hidden;flex:none}
.arrow::before{content:"";position:absolute;inset:2px 2px 50% 2px;border-radius:50% 50% 40% 40%;background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,0))}
.arrow svg{width:22px;height:22px;position:relative}
.arrow.g{background:var(--grad-g);border-color:var(--g900)}
.arrow:hover{filter:brightness(1.1)}
@media (max-width:900px){
  .hero-slide{grid-template-columns:1fr;gap:1rem}
  .hero-art{order:-1;width:min(100%,520px)}
  .hero-copy{text-align:center}.hero-copy p{margin-inline:auto}.hero-actions{justify-content:center}
}
@media (min-width:2000px){.hero-art{width:min(100%,900px)}}

/* ---------- value strip / synthesis ---------- */
.values{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}
.value{display:flex;gap:.9rem;align-items:center}
.value h3{font-size:1.15rem}.value p{font-size:.9rem;line-height:1.5}
.syn{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,330px),1fr));gap:1.2rem}
.syn-item{display:grid;grid-template-columns:1fr auto 1fr;gap:.6rem;align-items:center;text-align:center;padding:1.1rem}
.syn-item .old,.syn-item .new{padding:.8rem .6rem;border-radius:14px;font-size:.95rem;line-height:1.45}
.syn-item .old{background:linear-gradient(180deg,#fff,var(--g100));border:1.5px solid var(--g700)}
.syn-item .new{background:linear-gradient(180deg,#fff,var(--b100));border:1.5px solid var(--b700)}
.syn-item b{display:block;font-family:var(--font-h);color:var(--b900);font-size:1.05rem}
.syn-item small{display:block;color:var(--ink-3);font-size:.8rem}
.syn-item .mid{width:38px;height:38px;border-radius:50%;background:var(--grad-g);display:grid;place-items:center;color:#fff;border:1px solid var(--g900);box-shadow:var(--gloss)}
.syn-item .mid svg{width:20px;height:20px}
@media (max-width:420px){.syn-item{grid-template-columns:1fr;}.syn-item .mid{margin:auto;transform:rotate(90deg)}}

/* ---------- services slider (swipeable, 4 parts) ---------- */
.svc-tabs{display:flex;gap:.6rem;overflow-x:auto;padding:.4rem .2rem 1rem;justify-content:center;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.svc-tabs::-webkit-scrollbar{display:none}
.svc-tab{flex:none;display:flex;align-items:center;gap:.55rem;padding:.45rem 1.1rem .45rem .5rem;border-radius:999px;cursor:pointer;font-weight:600;color:var(--b800);background:linear-gradient(180deg,#fff,var(--b100));border:1.5px solid var(--b700);transition:.25s}
.svc-tab .ico{width:34px;height:34px;border-radius:50%}
.svc-tab.on{background:var(--grad-b);color:#fff;border-color:var(--b900);text-shadow:0 1px 1px rgba(0,0,0,.3);box-shadow:var(--gloss),0 6px 14px rgba(6,48,31,.3)}
.svc-tab.on .ico{background:var(--grad-g);border-color:var(--g900)}
.svc-wrap{position:relative}
.svc-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:1.2rem;padding:.6rem .2rem 1.4rem;scrollbar-width:none;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
.svc-track::-webkit-scrollbar{display:none}
.svc-slide{flex:0 0 100%;scroll-snap-align:center;scroll-snap-stop:always}
.svc-card{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(1rem,2.5vw,2.4rem);align-items:center;padding:clamp(1rem,2vw,1.8rem)}
.svc-art{border-radius:22px;overflow:hidden;aspect-ratio:5/4;border:3px solid transparent;background:linear-gradient(#0a4430,#0a4430) padding-box,linear-gradient(160deg,#9fe9cf,#4aa77d 45%,#066e53) border-box;box-shadow:0 14px 34px rgba(4,36,24,.3);position:relative}
.svc-art img{width:100%;height:100%;object-fit:cover}
.svc-art::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(255,255,255,.3),rgba(255,255,255,0) 35%);pointer-events:none}
.svc-card .num{font-family:var(--font-h);font-size:.95rem;font-weight:700;color:var(--g700)}
.svc-card h3{font-size:clamp(1.4rem,1.6vw + .8rem,2.1rem);margin:.2rem 0 .5rem}
.svc-card ul{margin:.8rem 0 1.2rem;display:grid;gap:.4rem}
.svc-card li{display:flex;gap:.55rem;align-items:flex-start;font-size:.98rem;color:var(--ink-2)}
.svc-card li::before{content:"";flex:none;width:18px;height:18px;margin-top:.35rem;background:var(--grad-g);clip-path:polygon(50% 0,62% 22%,88% 12%,78% 38%,100% 50%,78% 62%,88% 88%,62% 78%,50% 100%,38% 78%,12% 88%,22% 62%,0 50%,22% 38%,12% 12%,38% 22%)}
.svc-nav{display:flex;align-items:center;justify-content:center;gap:1rem;margin-top:.2rem}
.svc-dots{display:flex;gap:.5rem}
.svc-dots button{width:11px;height:11px;border-radius:50%;border:1.5px solid var(--b800);background:#fff;padding:0;cursor:pointer;transition:.3s}
.svc-dots button.on{width:34px;border-radius:8px;background:var(--grad-g);border-color:var(--g900)}
.swipe-hint{display:none;text-align:center;font-size:.82rem;color:var(--ink-3);margin-top:.4rem}
@media (max-width:860px){.svc-card{grid-template-columns:1fr}.swipe-hint{display:block}.svc-tabs{justify-content:flex-start}}

/* ---------- portal / posts ---------- */
.feat-wrap{position:relative;overflow:hidden;border-radius:var(--r);padding:.4rem 0}
.feat-wrap::before,.feat-wrap::after{content:"";position:absolute;top:0;bottom:0;width:48px;z-index:2;pointer-events:none}
.feat-wrap::before{left:0;background:linear-gradient(90deg,var(--bg-a),transparent)}
.feat-wrap::after{right:0;background:linear-gradient(270deg,var(--bg-c),transparent)}
.feat-track{display:flex;gap:1.1rem;width:max-content;animation:marq var(--mdur,60s) linear infinite;padding:.5rem .2rem}
.feat-wrap:hover .feat-track,.feat-wrap:focus-within .feat-track,.feat-wrap.paused .feat-track{animation-play-state:paused}
@keyframes marq{to{transform:translateX(-50%)}}
.feat-wrap.manual{overflow-x:auto;scrollbar-width:thin}.feat-wrap.manual .feat-track{animation:none}
.post-card{width:320px;flex:none;display:flex;flex-direction:column;gap:.5rem;padding:1.1rem;cursor:pointer;text-align:left}
.post-card h3{font-size:1.15rem;line-height:1.45}
.post-card p{font-size:.93rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;font-size:.8rem;color:var(--ink-3);margin-top:auto}
.post-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:1.2rem}
.post-list .post-card{width:auto}
.empty{padding:2rem;text-align:center;color:var(--ink-3)}
@media (prefers-reduced-motion:reduce){.feat-track{animation:none}.feat-wrap{overflow-x:auto}}

/* ---------- forms ---------- */
.form{display:grid;gap:1rem}
.form .row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));gap:1rem}
label.f{display:grid;gap:.3rem;font-weight:600;font-size:.95rem;color:var(--b800)}
label.f .req{color:var(--g700)}
input.in,select.in,textarea.in{width:100%;padding:.7rem .95rem;border-radius:14px;border:1.6px solid var(--b600);background:linear-gradient(180deg,#fffdf8,var(--cream));box-shadow:inset 0 2px 4px rgba(6,48,31,.08);font-weight:400;min-height:46px;color:var(--ink)}
input.in:focus,select.in:focus,textarea.in:focus{outline:none;border-color:var(--g600);box-shadow:inset 0 2px 4px rgba(6,48,31,.06)}
textarea.in{min-height:130px;resize:vertical}
.hp{position:absolute!important;left:-9999px;opacity:0;height:0;width:0}
.alert{padding:.8rem 1rem;border-radius:14px;font-weight:600;display:none}
.alert.show{display:block}
.alert.ok{background:linear-gradient(180deg,#fff,var(--g100));border:1.6px solid var(--g700);color:var(--g800)}
.alert.err{background:linear-gradient(180deg,#fff,var(--b100));border:1.6px solid var(--b700);color:var(--b800)}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.93rem;font-weight:400}
.check input{width:20px;height:20px;accent-color:var(--g600);margin-top:.2rem;flex:none}

/* ---------- steps / faq ---------- */
.steps{counter-reset:s;display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.step{counter-increment:s;padding-top:2.4rem}
.step::before{content:counter(s,bengali);position:absolute;top:-18px;left:1.2rem;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-family:var(--font-h);font-weight:700;font-size:1.25rem;color:#fff;background:var(--grad-g);border:1px solid var(--g900);box-shadow:var(--gloss),0 6px 12px rgba(4,82,61,.3)}
.faq details{margin-bottom:.7rem;border-radius:16px;border:1.6px solid transparent;background:linear-gradient(#fffdf8,var(--cream)) padding-box,linear-gradient(135deg,var(--b700),var(--g700)) border-box;overflow:hidden}
.faq summary{cursor:pointer;padding:.9rem 1.2rem;font-weight:600;color:var(--b800);list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--g700);font-weight:700}
.faq details[open] summary::after{content:"－"}
.faq details p{padding:0 1.2rem 1rem}

/* ---------- shop / catalog ---------- */
.toolbar{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;justify-content:space-between;margin-bottom:1.4rem}
.toolbar .chips{display:flex;flex-wrap:wrap;gap:.5rem}
.prod{display:flex;flex-direction:column;gap:.55rem;padding:0;overflow:hidden}
.prod .thumb{aspect-ratio:16/10;position:relative;display:grid;place-items:center;color:#fff;overflow:hidden}
.prod .thumb::before{content:"";position:absolute;inset:0;background:url(../assets/pattern-dark.svg) 0 0/90px 90px;opacity:1}
.prod .thumb.b{background:linear-gradient(135deg,#228c62,#06301f)}
.prod .thumb.g{background:linear-gradient(135deg,#16a579,#033b2d)}
.prod .thumb.m{background:linear-gradient(135deg,#0f5a3f,#0a8a63)}
.prod .thumb svg{position:relative;width:64px;height:64px;filter:drop-shadow(0 4px 6px rgba(0,0,0,.35))}
.prod .thumb::after{content:"";position:absolute;inset:0 0 55% 0;background:linear-gradient(180deg,rgba(255,255,255,.34),rgba(255,255,255,0))}
.prod .body{padding:0 1.2rem 1.2rem;display:flex;flex-direction:column;gap:.45rem;flex:1}
.prod h3{font-size:1.1rem}
.prod .meta{display:flex;flex-wrap:wrap;gap:.3rem .8rem;font-size:.84rem;color:var(--ink-3)}
.prod .foot{display:flex;align-items:center;justify-content:space-between;gap:.6rem;margin-top:auto;padding-top:.5rem}
.price{font-family:var(--font-h);font-weight:700;font-size:1.25rem;color:var(--g800)}
.price small{display:block;font-family:var(--font);font-size:.7rem;font-weight:600;color:var(--b700)}
.cartbar{position:fixed;left:50%;bottom:calc(var(--tab-h) + 16px + env(safe-area-inset-bottom));transform:translate(-50%,160%);z-index:80;transition:transform .35s}
.cartbar.show{transform:translate(-50%,0)}

/* modal */
.modal{position:fixed;inset:0;z-index:150;display:none;align-items:center;justify-content:center;padding:1rem;background:rgba(4,36,24,.55);backdrop-filter:blur(6px)}
.modal.open{display:flex}
.modal-box{width:min(680px,100%);max-height:92dvh;overflow:auto;border-radius:24px;padding:1.5rem;position:relative;border:2px solid transparent;
  background:linear-gradient(#fffdf8,var(--cream-2)) padding-box,linear-gradient(135deg,var(--b700),var(--g600)) border-box;box-shadow:var(--shadow-2)}
.modal-x{position:absolute;right:12px;top:12px;width:38px;height:38px;border-radius:50%;border:1px solid var(--b900);background:var(--grad-b);color:#fff;font-size:1.3rem;cursor:pointer;line-height:1;box-shadow:var(--gloss)}
.modal-box h3{padding-right:2.6rem;margin-bottom:.8rem}
.post-body{white-space:pre-wrap;word-break:break-word;color:var(--ink);line-height:1.9}

/* ---------- library ---------- */
.tabs2{display:flex;gap:.6rem;justify-content:center;flex-wrap:wrap;margin-bottom:1.6rem}
.tabs2 .btn{min-width:min(100%,280px)}
.lib{display:flex;flex-direction:column;gap:.6rem;height:100%}
.lib-top{display:flex;gap:.9rem;align-items:center}
.mono{width:60px;height:60px;border-radius:18px;display:grid;place-items:center;font-family:var(--font-h);font-weight:700;font-size:1.25rem;color:#fff;border:1px solid var(--b900);background:var(--grad-b);box-shadow:var(--gloss),0 6px 14px rgba(6,48,31,.28);position:relative;overflow:hidden;flex:none;text-shadow:0 1px 2px rgba(0,0,0,.4)}
.mono.g{background:var(--grad-g);border-color:var(--g900)}
.mono::before{content:"";position:absolute;inset:2px 2px 50% 2px;border-radius:16px 16px 40% 40%;background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,0))}
.lib h3{font-size:1.1rem;line-height:1.35}
.lib .en{font-size:.85rem;color:var(--ink-3);font-family:var(--font)}
.lib .rank{font-size:.8rem;font-weight:700;color:var(--g700)}
.lib p{font-size:.93rem}
.lib .acts{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:auto;padding-top:.4rem}
.lib .dom{font-size:.78rem;color:var(--ink-3);word-break:break-all}

/* ---------- footer ---------- */
.site-footer{margin-top:3rem;color:#e7fbf4;background:linear-gradient(165deg,var(--b800),var(--g800));position:relative;border-top:4px solid transparent;border-image:linear-gradient(90deg,var(--b400),var(--g400),var(--b400)) 1;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0;background:url(../assets/pattern-dark.svg) 0 0/120px 120px;pointer-events:none}
.foot-grid{position:relative;display:grid;grid-template-columns:1.3fr 1fr 1.4fr 1fr;gap:2rem;padding:3rem 0 2rem}
.site-footer h4{color:#fff;font-size:1.1rem;margin-bottom:.8rem;padding-bottom:.4rem;border-bottom:2px solid rgba(127,220,188,.5);display:inline-block}
.site-footer p,.site-footer li,.site-footer a{color:#dff7ee;font-size:.96rem}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer .logo b{color:#fff}.site-footer .logo small{color:var(--g300)}
.foot-links{display:grid;gap:.4rem}
.addr{display:grid;gap:.9rem}
.addr-i{display:flex;gap:.7rem;align-items:flex-start}
.addr-i .ico{width:38px;height:38px;border-radius:12px;background:var(--grad-g);border-color:var(--g900)}
.addr-i b{display:block;color:#fff;font-size:.88rem;letter-spacing:.02em}
.addr-i span,.addr-i a{font-size:1rem;line-height:1.5}
.foot-bot{position:relative;border-top:1px solid rgba(255,255,255,.2);padding:1rem 0 1.4rem;display:flex;flex-wrap:wrap;gap:.6rem 1.4rem;justify-content:space-between;font-size:.88rem;color:#bfeadb}
.foot-bot a{color:#bfeadb}
@media (max-width:1000px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.foot-grid{grid-template-columns:1fr;padding-top:2rem}}

/* ---------- page hero (inner pages) ---------- */
.phero{padding:clamp(1.8rem,4vw,3.6rem) 0 clamp(1rem,2vw,2rem);text-align:center}
.phero .inner{position:relative;border-radius:calc(var(--r) + 8px);padding:clamp(1.6rem,3vw,3rem) 1.2rem;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--b700) 0%,var(--b800) 45%,var(--g800) 100%);border:2px solid rgba(255,255,255,.35);box-shadow:var(--shadow-2)}
.phero .inner::before{content:"";position:absolute;inset:0;background:url(../assets/pattern-dark.svg) 0 0/110px 110px}
.phero .inner::after{content:"";position:absolute;left:0;right:0;top:0;height:48%;background:linear-gradient(180deg,rgba(255,255,255,.22),rgba(255,255,255,0));pointer-events:none}
.phero h1{color:#fff;position:relative;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.phero p{color:#e5fbf3;position:relative;max-width:46em;margin:.6rem auto 0;font-size:1.1rem}
.crumbs{position:relative;font-size:.85rem;color:#bfeadb;margin-bottom:.5rem}.crumbs a{color:#dff7ee}

/* misc */
.cta{display:grid;grid-template-columns:1fr auto;gap:1.5rem;align-items:center;padding:clamp(1.4rem,3vw,2.4rem)}
@media (max-width:760px){.cta{grid-template-columns:1fr;text-align:center}.cta .hero-actions{justify-content:center}}
.reveal{opacity:0;transform:none;transition:opacity .55s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.hero-slide{transition:none}html{scroll-behavior:auto}}
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1rem,3vw,2.5rem);align-items:center}
@media (max-width:820px){.two{grid-template-columns:1fr}}
.tick li{display:flex;gap:.6rem;margin:.45rem 0}
.tick li::before{content:"✦";color:var(--g600);flex:none}
.install-btn{display:none}.install-btn.show{display:inline-flex}
.kbd{font-family:var(--font);background:var(--b100);border:1px solid var(--b600);border-radius:8px;padding:0 .4rem}
.tbl{width:100%;border-collapse:separate;border-spacing:0;border-radius:14px;overflow:hidden;border:1.6px solid var(--b700)}
.tbl th{background:var(--grad-b);color:#fff;text-align:left;padding:.6rem .9rem;font-weight:600}
.tbl td{padding:.6rem .9rem;border-top:1px solid rgba(10,86,60,.2);background:rgba(255,255,255,.8)}
.offline-box{min-height:70vh;display:grid;place-items:center;text-align:center;padding:2rem}

/* ==========================================================================
   AI Educator (শিক্ষাবিদ) — round floating launcher + ChatGPT-style panel
   ========================================================================== */
.edu-fab{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:calc(var(--tab-h) + 18px + env(safe-area-inset-bottom));z-index:120;width:104px;height:104px;border-radius:50%;cursor:pointer;border:0;padding:0;background:none;
  display:grid;place-items:center;-webkit-tap-highlight-color:transparent}
.edu-fab .orb{position:relative;width:100%;height:100%;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;overflow:hidden;
  background:radial-gradient(circle at 32% 24%,#7fdcbc 0%,#16a579 28%,#0f5a3f 72%,#06301f 100%);border:3px solid #e8fff7;
  box-shadow:0 12px 28px rgba(4,36,24,.5), inset 0 -8px 14px rgba(0,0,0,.25), inset 0 3px 6px rgba(255,255,255,.55);color:#fff;transition:transform .25s}
.edu-fab .orb::before{content:"";position:absolute;left:10%;right:10%;top:3%;height:44%;border-radius:50% 50% 46% 46%;background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(255,255,255,.04));pointer-events:none}
.edu-fab .orb::after{content:"";position:absolute;inset:6px;border-radius:50%;border:1.5px dashed rgba(255,255,255,.55);animation:spin 18s linear infinite;pointer-events:none}
@keyframes spin{to{transform:rotate(360deg)}}
.edu-fab:hover .orb{transform:scale(1.07)}
.edu-fab .mic{position:relative;z-index:1;width:30px;height:30px;margin-top:4px;filter:drop-shadow(0 2px 2px rgba(0,0,0,.4))}
.edu-fab .nm{position:relative;z-index:1;font-family:var(--font);font-weight:700;font-size:1.08rem;line-height:1.1;text-shadow:0 1px 3px rgba(0,0,0,.55);letter-spacing:.01em}
.edu-fab .pulse{position:absolute;inset:-6px;border-radius:50%;border:3px solid var(--g400);opacity:0;animation:pulse 2.6s ease-out infinite;pointer-events:none}
.edu-fab .pulse.p2{animation-delay:1.3s;border-color:var(--b400)}
@keyframes pulse{0%{transform:scale(.88);opacity:.85}100%{transform:scale(1.42);opacity:0}}
.edu-tip{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:calc(var(--tab-h) + 134px + env(safe-area-inset-bottom));z-index:119;max-width:230px;padding:.55rem .9rem;border-radius:16px 16px 4px 16px;background:linear-gradient(180deg,#fff,var(--g100));border:1.6px solid var(--g700);box-shadow:var(--shadow-2);font-weight:600;color:var(--b800);font-size:.92rem;line-height:1.4;
  opacity:0;transform:translateY(8px);transition:.4s;pointer-events:none}
.edu-tip.show{opacity:1;transform:none;pointer-events:auto;cursor:pointer}
.edu-fab.hide,.edu-tip.hide{display:none}
@media (max-width:820px){.edu-fab{width:92px;height:92px}.edu-fab .nm{font-size:.98rem}.edu-fab .mic{width:26px;height:26px}.edu-tip{bottom:calc(var(--tab-h) + 122px + env(safe-area-inset-bottom))}}
@media (min-width:2000px){.edu-fab{width:132px;height:132px}.edu-fab .nm{font-size:1.4rem}.edu-fab .mic{width:38px;height:38px}}

.chat{position:fixed;z-index:130;right:max(16px,env(safe-area-inset-right));bottom:calc(var(--tab-h) + 18px + env(safe-area-inset-bottom));width:min(430px,calc(100vw - 24px));height:min(680px,calc(100dvh - var(--tab-h) - 40px));display:none;flex-direction:column;overflow:hidden;
  border-radius:26px;border:2px solid transparent;background:linear-gradient(#fffdf8,var(--cream-2)) padding-box,linear-gradient(150deg,var(--b600),var(--g500) 55%,var(--b700)) border-box;box-shadow:0 28px 70px rgba(4,36,24,.45)}
.chat.open{display:flex;animation:chatin .3s ease}
@keyframes chatin{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}
.chat-head{position:relative;display:flex;align-items:center;gap:.7rem;padding:.8rem 1rem;color:#fff;background:linear-gradient(135deg,var(--b700),var(--b800) 50%,var(--g800));overflow:hidden}
.chat-head::before{content:"";position:absolute;inset:0;background:url(../assets/pattern-dark.svg) 0 0/100px 100px}
.chat-head>*{position:relative}
.chat-head .av{width:44px;height:44px;border-radius:50%;background:radial-gradient(circle at 30% 25%,#7fdcbc,#16a579 40%,#0f5a3f);border:2px solid #e8fff7;display:grid;place-items:center;font-weight:700;font-size:.78rem;box-shadow:0 2px 8px rgba(0,0,0,.3);flex:none;text-align:center;line-height:1}
.chat-head b{display:block;font-size:1.08rem;line-height:1.2}.chat-head small{opacity:.9;font-size:.78rem}
.chat-head .x{margin-left:auto;width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.6);background:rgba(255,255,255,.18);color:#fff;font-size:1.4rem;cursor:pointer;line-height:1}
.chat-body{flex:1;overflow-y:auto;padding:1rem .9rem;display:flex;flex-direction:column;gap:.8rem;scroll-behavior:smooth;background:radial-gradient(500px 300px at 100% 0,rgba(22,165,121,.1),transparent),radial-gradient(500px 300px at 0 100%,rgba(34,140,98,.1),transparent)}
.msg{display:flex;gap:.55rem;max-width:94%;animation:msgin .3s ease}
@keyframes msgin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg .b{padding:.65rem .95rem;border-radius:18px;line-height:1.65;font-size:.98rem;white-space:pre-wrap;word-break:break-word}
.msg.bot .b{background:linear-gradient(180deg,#fffdf8,var(--cream));border:1.5px solid var(--g600);border-top-left-radius:6px;color:var(--ink);box-shadow:0 3px 10px rgba(6,48,31,.08)}
.msg.bot::before{content:"শি";flex:none;width:30px;height:30px;border-radius:50%;background:var(--grad-g);color:#fff;display:grid;place-items:center;font-size:.8rem;font-weight:700;border:1px solid var(--g900);margin-top:2px;box-shadow:var(--gloss)}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.msg.user .b{background:var(--grad-b);color:#fff;border:1px solid var(--b900);border-top-right-radius:6px;box-shadow:var(--gloss);text-shadow:0 1px 1px rgba(0,0,0,.25)}
.typing{display:none;align-self:flex-start;gap:5px;padding:.7rem 1rem;border-radius:18px;background:#fff;border:1.5px solid var(--g600)}
.typing.show{display:flex}
.typing i{width:8px;height:8px;border-radius:50%;background:var(--g600);animation:bounce 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.5}30%{transform:translateY(-6px);opacity:1}}
.chat-chips{display:flex;gap:.45rem;overflow-x:auto;padding:.5rem .8rem;scrollbar-width:none;border-top:1px solid rgba(10,86,60,.12);background:rgba(255,255,255,.55)}
.chat-chips::-webkit-scrollbar{display:none}
.chat-chips .chip{flex:none;font-size:.82rem}
.vx-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .5rem;padding:.55rem .8rem .2rem;background:rgba(255,255,255,.65)}
.vx-mic{display:inline-flex;align-items:center;gap:.5rem;min-height:46px;padding:.4rem 1.1rem;border-radius:999px;border:1px solid var(--g900);background:var(--grad-g);color:#fff;font-weight:700;cursor:pointer;box-shadow:var(--gloss),0 6px 14px rgba(4,82,61,.3);position:relative;overflow:hidden;text-shadow:0 1px 1px rgba(0,0,0,.3)}
.vx-mic::before{content:"";position:absolute;left:3px;right:3px;top:2px;height:48%;border-radius:999px 999px 40% 40%;background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,.04));pointer-events:none}
.vx-mic svg,.vx-mic span{position:relative}
.vx-mic.listening{background:var(--grad-b);border-color:var(--b900);animation:vxp 1.2s ease-out infinite}
@keyframes vxp{0%{box-shadow:0 0 0 0 rgba(34,140,98,.65),var(--gloss)}100%{box-shadow:var(--gloss)}}
.vx-status{flex:1 1 7rem;min-width:0;font-size:.8rem;line-height:1.3;color:var(--ink-3)}
.vx-status.active{color:var(--g800);font-weight:600}
.vx-row2{flex:1 0 100%;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.vx-toggle,.vx-stop,.vx-lang{display:inline-flex;align-items:center;gap:.35rem;min-height:34px;padding:.15rem .8rem;border-radius:999px;font-size:.8rem;font-weight:600;cursor:pointer;color:var(--b800);background:linear-gradient(180deg,#fff,var(--b100));border:1.5px solid var(--b600)}
.vx-toggle.on{background:var(--grad-g);color:#fff;border-color:var(--g900);text-shadow:0 1px 1px rgba(0,0,0,.3)}
.vx-stop{color:var(--g800);border-color:var(--g700)}
.chat-in{display:flex;gap:.5rem;align-items:flex-end;padding:.5rem .8rem .8rem;background:rgba(255,255,255,.65)}
.chat-in textarea{flex:1;resize:none;max-height:120px;min-height:46px;padding:.7rem 1rem;border-radius:23px;border:1.6px solid var(--b600);background:#fff;line-height:1.4;box-shadow:inset 0 2px 4px rgba(6,48,31,.08)}
.chat-in textarea:focus{outline:none;border-color:var(--g600);box-shadow:none}
.chat-in .send{width:46px;height:46px;border-radius:50%;border:1px solid var(--b900);background:var(--grad-b);color:#fff;cursor:pointer;display:grid;place-items:center;box-shadow:var(--gloss);flex:none;position:relative;overflow:hidden}
.chat-in .send svg{width:20px;height:20px;position:relative}
.chat-note{font-size:.7rem;text-align:center;color:var(--ink-3);padding:0 .8rem .55rem;background:rgba(255,255,255,.65)}
@media (max-width:820px){
  .chat{inset:0;width:auto;height:auto;border-radius:0;right:0;bottom:0;border:0}
  .chat-body{padding-bottom:1.2rem}
}
body.chat-open{overflow:hidden}
@media (min-width:2000px){.chat{width:min(560px,40vw);height:min(900px,calc(100dvh - 60px))}}

.edu-demo{width:min(100%,420px);display:grid;gap:.8rem;padding:1.1rem;border-radius:22px;background:rgba(255,255,255,.12);border:1.5px solid rgba(255,255,255,.4);box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
.edu-demo .msg{max-width:100%}
.edu-demo .msg.bot .b{color:var(--ink)}
.edu-demo .msg.bot::before{content:"শি"}
.lib .dom{font-size:.78rem;color:var(--ink-3);direction:ltr;text-align:left;font-family:var(--font-en,Inter,sans-serif);word-break:break-all}