/* ============================================================
   MRX Experience — design system
   Luxury / minimal / cinematic. Dark universe, one accent.
   ============================================================ */
:root{
  --acc:#6d5cff;
  --acc2:#38e1c6;
  --bg:#05050a;
  --ink:#eceaf6;
  --dim:#9a98b5;
  --faint:#55546e;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.03);
  --disp:"Space Grotesk","Noto Sans Bengali",sans-serif;
  --body:"Inter","Noto Sans Bengali",sans-serif;
  --easing:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:auto}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
html{overflow-x:clip}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--body);font-size:16px;line-height:1.7;
  overflow-x:clip;-webkit-font-smoothing:antialiased;
  max-width:100vw;
}
@supports not (overflow-x: clip){html,body{overflow-x:hidden}}
body[data-lang="bn"]{--disp:"Noto Sans Bengali","Space Grotesk",sans-serif;--body:"Noto Sans Bengali","Inter",sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--acc);color:#fff}
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:#08080f}
::-webkit-scrollbar-thumb{background:#26263e;border-radius:9px}
::-webkit-scrollbar-thumb:hover{background:var(--acc)}

/* ---------- fixed environment layers ---------- */
#webgl{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(ellipse at 50% 45%,transparent 55%,rgba(0,0,0,.55) 100%)}
.grain{position:fixed;inset:-100%;z-index:2;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  animation:grain 8s steps(10) infinite}
@keyframes grain{0%,100%{transform:translate(0,0)}10%{transform:translate(-5%,-8%)}30%{transform:translate(4%,3%)}50%{transform:translate(-6%,6%)}70%{transform:translate(6%,-4%)}90%{transform:translate(-3%,5%)}}

/* ---------- preloader ---------- */
.loader{position:fixed;inset:0;z-index:100;background:var(--bg);display:grid;place-items:center;transition:opacity .8s var(--easing),visibility .8s}
.loader.done{opacity:0;visibility:hidden}
.loader-inner{text-align:center}
.loader-mono{font-family:var(--disp);font-size:44px;font-weight:700;letter-spacing:.06em;
  background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:26px}
.loader-line{width:210px;height:1px;background:rgba(255,255,255,.12);margin:0 auto;overflow:hidden}
.loader-line span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2))}
.loader-pct{margin-top:14px;font-size:12px;letter-spacing:.3em;color:var(--faint);font-variant-numeric:tabular-nums}

/* ---------- cursor ---------- */
.cursor,.cursor-dot{position:fixed;top:0;left:0;z-index:99;pointer-events:none;border-radius:50%;transform:translate(-50%,-50%)}
.cursor{width:38px;height:38px;border:1px solid rgba(255,255,255,.35);transition:width .3s,height .3s,border-color .3s,background .3s}
.cursor.grow{width:70px;height:70px;border-color:var(--acc);background:rgba(109,92,255,.08)}
.cursor.open{width:86px;height:86px;background:rgba(109,92,255,.9);border-color:transparent}
.cursor.open::after{content:"OPEN";position:absolute;inset:0;display:grid;place-items:center;font-size:10px;letter-spacing:.2em;color:#fff;font-weight:600}
.cursor-dot{width:5px;height:5px;background:var(--acc2)}
@media(hover:none){.cursor,.cursor-dot{display:none}}

/* ---------- progress + dots ---------- */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60;background:transparent}
.progress span{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--acc),var(--acc2))}
.dots{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:50;display:flex;flex-direction:column;gap:12px}
.dots a{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.18);transition:.3s;position:relative}
.dots a.on{background:var(--acc2);box-shadow:0 0 12px rgba(56,225,198,.8)}
.dots a:hover::after{content:attr(data-label);position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:11px;letter-spacing:.12em;color:var(--dim);white-space:nowrap;background:rgba(5,5,12,.85);padding:3px 10px;border-radius:6px;border:1px solid var(--line)}
@media(max-width:900px){.dots{display:none}}

/* ---------- header ---------- */
.hd{position:fixed;top:0;left:0;right:0;z-index:70;display:flex;align-items:center;justify-content:space-between;
  padding:18px 34px;transition:background .4s,backdrop-filter .4s,padding .4s}
.hd.scrolled{background:rgba(5,5,12,.6);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:12px 34px;border-bottom:1px solid var(--line)}
.hd-brand{display:flex;align-items:center;gap:12px}
.hd-mono{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;font-family:var(--disp);font-weight:700;font-size:14px;
  background:linear-gradient(135deg,var(--acc),#3b2fd4);color:#fff}
.hd-name{font-family:var(--disp);font-weight:600;font-size:14.5px;letter-spacing:.02em}
.hd-nav{display:flex;gap:26px}
.hd-nav a{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);transition:color .25s;position:relative}
.hd-nav a:hover{color:var(--ink)}
.hd-nav a::after{content:"";position:absolute;left:0;bottom:-5px;height:1px;width:0;background:var(--acc2);transition:width .3s var(--easing)}
.hd-nav a:hover::after{width:100%}
.hd-right{display:flex;align-items:center;gap:18px}
.lang-sw{font-family:var(--disp);font-size:12.5px;letter-spacing:.08em;color:var(--faint)}
.lang-sw a{padding:4px 2px;color:var(--faint);transition:color .2s}
.lang-sw a.on{color:var(--acc2)}
.lang-sw em{margin:0 3px;font-style:normal;opacity:.4}
.menu-btn{width:40px;height:40px;background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:.3s}
.menu-btn span{display:block;width:16px;height:1.5px;background:var(--ink);transition:.35s var(--easing)}
.menu-btn:hover{border-color:var(--acc)}
body.menu-open .menu-btn span:first-child{transform:translateY(3.2px) rotate(45deg)}
body.menu-open .menu-btn span:last-child{transform:translateY(-3.2px) rotate(-45deg)}
@media(max-width:900px){.hd-nav{display:none}.hd{padding:14px 18px}.hd.scrolled{padding:10px 18px}}

/* ---------- menu overlay ---------- */
.menu{position:fixed;inset:0;z-index:65;background:rgba(4,4,10,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  display:grid;place-items:center;opacity:0;visibility:hidden;transition:.5s var(--easing)}
body.menu-open .menu{opacity:1;visibility:visible}
.menu nav{display:flex;flex-direction:column;gap:4px;text-align:left}
.menu a{font-family:var(--disp);font-size:clamp(22px,4.4vh,34px);font-weight:600;color:var(--dim);padding:4px 0;
  transform:translateY(24px);opacity:0;transition:transform .5s var(--easing),opacity .5s,color .25s;transition-delay:calc(var(--i)*.035s)}
body.menu-open .menu a{transform:none;opacity:1}
.menu a:hover{color:var(--ink)}
.menu a em{font-style:normal;font-size:12px;color:var(--acc2);margin-right:18px;letter-spacing:.2em;vertical-align:middle}

/* ---------- chapters ---------- */
main{position:relative;z-index:10}
.ch{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:120px 0}
.wrap{width:min(1180px,92vw);margin:0 auto}
.center{text-align:center}
.ch-label{font-family:var(--disp);font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:var(--acc2);margin-bottom:52px;display:flex;align-items:center;gap:16px}
.ch-label::after{content:"";height:1px;flex:1;max-width:180px;background:linear-gradient(90deg,var(--acc2),transparent)}
body[data-lang="bn"] .ch-label{letter-spacing:.12em}

.reveal{opacity:0;transform:translateY(44px)}
.no-js .reveal,.reduced .reveal{opacity:1;transform:none}

/* ---------- hero ---------- */
.hero{min-height:100svh;align-items:center;text-align:center;padding:0}
.hero-inner{width:min(1100px,92vw)}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);
  border:1px solid var(--line);border-radius:99px;padding:8px 18px;background:var(--glass);backdrop-filter:blur(8px);margin-bottom:38px}
body[data-lang="bn"] .hero-kicker{letter-spacing:.06em}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--acc2);box-shadow:0 0 0 0 rgba(56,225,198,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 11px rgba(56,225,198,0)}100%{box-shadow:0 0 0 0 rgba(56,225,198,0)}}
.hero-name{font-family:var(--disp);font-weight:700;font-size:clamp(44px,9.5vw,124px);line-height:1.02;letter-spacing:-.03em;margin-bottom:26px}
.hero-name .w{display:inline-block;white-space:nowrap;margin:0 .12em}
.hero-name .c{display:inline-block;will-change:transform,opacity;
  background:linear-gradient(180deg,#fff 30%,#a49df1 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-role{font-family:var(--disp);font-size:clamp(14px,2vw,19px);letter-spacing:.24em;text-transform:uppercase;color:var(--acc2);margin-bottom:26px}
body[data-lang="bn"] .hero-role{letter-spacing:.08em}
.hero-tag{max-width:640px;margin:0 auto;color:var(--dim);font-size:clamp(15px,1.6vw,18px)}
.scroll-hint{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:12px;
  font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--faint)}
body[data-lang="bn"] .scroll-hint{letter-spacing:.08em}
.mouse{width:22px;height:36px;border:1.5px solid var(--faint);border-radius:12px;display:flex;justify-content:center;padding-top:6px}
.mouse i{width:3px;height:7px;border-radius:3px;background:var(--acc2);animation:wheel 1.6s infinite}
@keyframes wheel{0%{transform:translateY(0);opacity:1}70%{transform:translateY(12px);opacity:0}100%{opacity:0}}

/* ---------- identity ---------- */
.identity-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;align-items:center}
.big-p{font-size:clamp(17px,1.9vw,22px);color:#cfcde4;margin-bottom:26px;font-weight:400}
.stats{display:flex;gap:44px;margin-top:44px;flex-wrap:wrap}
.stat3 b{font-family:var(--disp);font-size:clamp(30px,3.6vw,46px);font-weight:700;display:block;letter-spacing:-.02em;
  background:linear-gradient(135deg,#fff,#8f86e8);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat3 span{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
body[data-lang="bn"] .stat3 span{letter-spacing:.05em}
.identity-card{position:relative;border:1px solid var(--line);border-radius:22px;overflow:hidden;background:var(--glass);
  backdrop-filter:blur(10px);transform-style:preserve-3d;will-change:transform}
.identity-card img{width:100%;aspect-ratio:4/5;object-fit:cover}
.identity-mono{aspect-ratio:4/5;display:grid;place-items:center;
  background:radial-gradient(circle at 30% 20%,rgba(109,92,255,.35),transparent 60%),radial-gradient(circle at 75% 80%,rgba(56,225,198,.2),transparent 55%)}
.identity-mono span{font-family:var(--disp);font-size:110px;font-weight:700;letter-spacing:.04em;
  background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.identity-meta{position:absolute;left:0;right:0;bottom:0;padding:20px 24px;display:flex;flex-direction:column;
  background:linear-gradient(transparent,rgba(3,3,8,.9))}
.identity-meta b{font-family:var(--disp)}
.identity-meta span{color:var(--dim);font-size:13px}
@media(max-width:900px){.identity-grid{grid-template-columns:1fr;gap:44px}.identity-card{max-width:420px}}

/* ---------- vision ---------- */
.vision{text-align:left}
.vision-lines{display:flex;flex-direction:column;gap:6vh}
.vision-line{font-family:var(--disp);font-size:clamp(26px,5vw,62px);font-weight:600;line-height:1.15;letter-spacing:-.02em;
  color:rgba(255,255,255,.14);max-width:1000px}
.vision-line span{background:linear-gradient(90deg,#fff 50%,rgba(255,255,255,.14) 50%);background-size:200% 100%;background-position:100% 0;
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- skills ---------- */
.skill-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.skill-group{border:1px solid var(--line);border-radius:20px;padding:28px;background:var(--glass);backdrop-filter:blur(8px);transition:border-color .3s,transform .3s}
.skill-group:hover{border-color:rgba(109,92,255,.45);transform:translateY(-4px)}
.skill-group h3{font-family:var(--disp);font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin-bottom:20px}
body[data-lang="bn"] .skill-group h3{letter-spacing:.05em}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:99px;padding:8px 15px;font-size:13.5px;
  background:rgba(255,255,255,.02);transition:.25s;cursor:default}
.chip:hover{border-color:var(--acc2);transform:translateY(-2px);box-shadow:0 6px 18px rgba(56,225,198,.12)}
.chip em{font-style:normal;font-size:11px;color:var(--faint);font-variant-numeric:tabular-nums}
.ring{width:18px;height:18px;border-radius:50%;background:conic-gradient(var(--acc2) calc(var(--p)*1%),rgba(255,255,255,.1) 0);display:grid;place-items:center}
.ring i{width:11px;height:11px;border-radius:50%;background:#0b0b14}

/* ---------- projects (horizontal) ---------- */
.projects{padding-bottom:0;justify-content:flex-start;padding-top:140px}
.hscroll{overflow:hidden;width:100%}
.htrack{display:flex;gap:34px;padding:10px max(4vw,calc((100vw - 1180px)/2)) 80px;width:max-content;will-change:transform}
.pcard{width:min(430px,82vw);flex:none;border:1px solid var(--line);border-radius:24px;padding:26px;background:rgba(10,10,20,.55);
  backdrop-filter:blur(12px);cursor:pointer;transition:border-color .3s,transform .3s,box-shadow .3s;outline:none}
.pcard:hover,.pcard:focus-visible{border-color:rgba(109,92,255,.55);transform:translateY(-8px);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.pcard-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:16px}
.pnum{font-family:var(--disp);font-size:15px;color:var(--acc2);letter-spacing:.1em}
.pcat{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
.pimg{border-radius:14px;overflow:hidden;aspect-ratio:16/9;margin-bottom:20px}
.pimg img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--easing)}
.pcard:hover .pimg img{transform:scale(1.05)}
.pgrad{display:grid;place-items:center;background:
  radial-gradient(circle at 25% 25%,hsla(var(--h),80%,62%,.5),transparent 55%),
  radial-gradient(circle at 80% 75%,hsla(calc(var(--h) + 60),80%,55%,.35),transparent 55%),#0c0c18}
.pgrad span{font-family:var(--disp);font-size:54px;font-weight:700;opacity:.8}
.pcard h3{font-family:var(--disp);font-size:24px;font-weight:600;margin-bottom:10px;letter-spacing:-.01em}
.pcard p{color:var(--dim);font-size:14.5px;margin-bottom:18px;min-height:66px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{font-size:11.5px;letter-spacing:.06em;color:var(--acc2);border:1px solid rgba(56,225,198,.25);border-radius:99px;padding:4px 11px}
.pmore{display:inline-block;margin-top:20px;font-family:var(--disp);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);
  border-bottom:1px solid var(--acc);padding-bottom:3px}
body[data-lang="bn"] .pmore,body[data-lang="bn"] .pcat{letter-spacing:.04em}

/* ---------- products ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px}
.prod{border:1px solid var(--line);border-radius:22px;padding:30px;background:linear-gradient(160deg,rgba(255,255,255,.045),rgba(255,255,255,.01));
  backdrop-filter:blur(10px);transition:.3s;transform-style:preserve-3d;will-change:transform}
.prod:hover{border-color:rgba(56,225,198,.4)}
.prod-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;gap:10px}
.prod-head b{font-family:var(--disp);font-size:19px;letter-spacing:-.01em}
.stage{font-size:10px;letter-spacing:.2em;border-radius:99px;padding:4px 10px;font-weight:700}
.stage.live{color:var(--acc2);border:1px solid rgba(56,225,198,.4)}
.stage.beta{color:#f7b955;border:1px solid rgba(247,185,85,.4)}
.stage.building{color:var(--dim);border:1px solid var(--line)}
.prod-tag{color:var(--acc2);font-size:13.5px;margin-bottom:14px}
.prod-body{color:var(--dim);font-size:14px}
.prod-body p{margin-bottom:8px}
.prod-foot{display:flex;justify-content:space-between;align-items:center;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12px;color:var(--faint);letter-spacing:.04em}
.prod-foot a{color:var(--ink);font-family:var(--disp);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;transition:color .2s}
.prod-foot a:hover{color:var(--acc2)}

/* ---------- open source ---------- */
.repo-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.repo{border:1px solid var(--line);border-radius:18px;padding:24px;background:var(--glass);transition:.3s;display:block}
.repo:hover{border-color:rgba(109,92,255,.5);transform:translateY(-4px)}
.repo-name{font-family:"Space Grotesk",monospace;font-size:16px;color:var(--ink);margin-bottom:10px}
.repo p{color:var(--dim);font-size:13.5px;margin-bottom:16px}
.repo-meta{font-size:12px;color:var(--faint);display:flex;align-items:center;gap:8px}
.lang-dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--acc),var(--acc2))}

/* ---------- timeline ---------- */
.tline{position:relative;padding-left:0}
.tline-bar{position:absolute;left:50%;top:0;bottom:0;width:1px;background:rgba(255,255,255,.09);transform:translateX(-50%)}
.tline-bar i{display:block;width:100%;height:0;background:linear-gradient(180deg,var(--acc),var(--acc2))}
.tstep{position:relative;width:46%;padding:6px 0 46px;margin-left:0}
.tstep.alt{margin-left:54%}
.tstep::before{content:"";position:absolute;top:14px;width:11px;height:11px;border-radius:50%;background:var(--bg);
  border:2px solid var(--acc2);box-shadow:0 0 14px rgba(56,225,198,.5)}
.tstep::before{right:calc(-4% - 6px)}
.tstep.alt::before{left:calc(-8.7% - 5px)}
.tyear{font-family:var(--disp);font-size:clamp(26px,3vw,38px);font-weight:700;letter-spacing:-.02em;
  background:linear-gradient(135deg,#fff,#7f76d9);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:6px}
.tbody b{font-family:var(--disp);font-size:17px;display:block;margin-bottom:6px}
.tbody p{color:var(--dim);font-size:14.5px}
@media(max-width:760px){
  .tline-bar{left:6px}
  .tstep,.tstep.alt{width:auto;margin-left:34px}
  .tstep::before,.tstep.alt::before{left:-33px;right:auto}
}

/* ---------- writing ---------- */
.post-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px;margin-bottom:44px}
.post{border:1px solid var(--line);border-radius:20px;padding:28px;background:var(--glass);display:block;transition:.3s}
.post:hover{border-color:rgba(109,92,255,.5);transform:translateY(-5px)}
.post time{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--acc2)}
.post h3{font-family:var(--disp);font-size:20px;margin:12px 0;line-height:1.35;letter-spacing:-.01em}
.post p{color:var(--dim);font-size:14px;margin-bottom:16px}
.post span{font-family:var(--disp);font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink)}
.btn-line{display:inline-block;font-family:var(--disp);font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  border:1px solid var(--line);border-radius:99px;padding:13px 30px;transition:.3s}
.btn-line:hover{border-color:var(--acc);background:rgba(109,92,255,.1)}

/* ---------- voices ---------- */
.voices-track{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.voices-row{display:flex;gap:26px;width:max-content;will-change:transform}
.voice{width:min(420px,80vw);flex:none;border:1px solid var(--line);border-radius:20px;padding:30px;background:var(--glass)}
.voice p{font-size:15.5px;color:#d6d4ea;margin-bottom:20px;line-height:1.75}
.voice footer{display:flex;flex-direction:column}
.voice b{font-family:var(--disp);font-size:14.5px}
.voice span{color:var(--faint);font-size:12.5px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px}
.c-lines{display:flex;flex-direction:column;gap:12px;margin:34px 0;font-size:15.5px}
.c-lines a{color:var(--ink);transition:color .2s;width:fit-content}
.c-lines a:hover{color:var(--acc2)}
.c-lines span{color:var(--dim)}
.socials{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px}
.socials a{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--line);border-radius:99px;
  padding:8px 17px;color:var(--dim);transition:.25s}
.socials a:hover{color:#fff;border-color:var(--acc);background:rgba(109,92,255,.12);transform:translateY(-2px)}
.newsletter{border:1px solid var(--line);border-radius:20px;padding:26px;background:var(--glass)}
.newsletter b{font-family:var(--disp);font-size:16px}
.newsletter p{color:var(--dim);font-size:13.5px;margin:6px 0 16px}
.nl-form{display:flex;gap:10px}
.nl-form input[type=email]{flex:1;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:12px 15px;font-size:14px;outline:none;font-family:var(--body)}
.nl-form input:focus{border-color:var(--acc)}
.nl-form button{background:linear-gradient(135deg,var(--acc),#4a3af0);border:0;color:#fff;border-radius:12px;padding:12px 20px;
  font-weight:700;font-size:13.5px;cursor:pointer;font-family:var(--body);transition:.2s}
.nl-form button:hover{box-shadow:0 8px 24px rgba(109,92,255,.4)}
.contact-form{border:1px solid var(--line);border-radius:24px;padding:36px;background:rgba(10,10,20,.5);backdrop-filter:blur(12px)}
.contact-form label{display:block;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin:18px 0 7px}
.contact-form label:first-of-type{margin-top:0}
.contact-form input,.contact-form textarea{width:100%;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:12px;
  color:var(--ink);padding:13px 16px;font-size:14.5px;outline:none;font-family:var(--body);transition:border .2s;resize:vertical}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--acc)}
.btn-solid{margin-top:26px;width:100%;background:linear-gradient(135deg,var(--acc),#4a3af0);border:0;color:#fff;border-radius:14px;
  padding:16px;font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.06em;cursor:pointer;transition:.25s}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(109,92,255,.45)}
.form-note{margin-top:14px;font-size:13.5px;color:var(--acc2);min-height:20px}
.form-note.bad{color:#ff8ba0}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr;gap:44px}}

/* ---------- ending ---------- */
.end{min-height:90vh}
.end-mono{font-family:var(--disp);font-size:60px;font-weight:700;
  background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:24px}
.end-line{color:var(--dim);font-size:clamp(16px,2vw,20px);margin-bottom:20px}
.end-cta{display:inline-block;font-family:var(--disp);font-size:clamp(30px,5.5vw,64px);font-weight:700;letter-spacing:-.02em;line-height:1.15;
  background:linear-gradient(90deg,#fff,#9a90f0 60%,var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent;
  padding-bottom:10px;border-bottom:1px solid transparent;transition:.3s}
.end-cta:hover{border-color:var(--acc2)}
.foot{margin-top:100px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--faint);font-size:12.5px;
  border-top:1px solid var(--line);padding-top:26px;width:100%}
.foot-tech{letter-spacing:.14em;text-transform:uppercase}

/* ---------- case file overlay ---------- */
.case{position:fixed;inset:0;z-index:80;visibility:hidden}
.case.on{visibility:visible}
.case-bg{position:absolute;inset:0;background:rgba(3,3,8,.75);backdrop-filter:blur(10px);opacity:0;transition:opacity .4s}
.case.on .case-bg{opacity:1}
.case-panel{position:absolute;top:0;right:0;bottom:0;width:min(660px,100vw);background:#0a0a14;border-left:1px solid var(--line);
  padding:70px 54px;overflow-y:auto;transform:translateX(102%);transition:transform .55s var(--easing)}
.case.on .case-panel{transform:none}
.case-x{position:absolute;top:22px;right:26px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:transparent;color:var(--ink);font-size:15px;cursor:pointer;transition:.25s}
.case-x:hover{border-color:var(--acc);transform:rotate(90deg)}
.case-cat{font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--acc2);margin-bottom:14px}
.case-panel h2{font-family:var(--disp);font-size:clamp(26px,4vw,40px);letter-spacing:-.02em;margin-bottom:24px}
.case-img{border-radius:16px;overflow:hidden;margin-bottom:26px}
.case-img:empty{display:none}
.case-body{color:#c9c7dd;font-size:15.5px;line-height:1.8}
.case-body p{margin-bottom:14px}
.case-body h2{font-size:20px;margin:22px 0 10px}
.case-panel .tags{margin:22px 0}
.case-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px}
.case-links a{font-family:var(--disp);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;border:1px solid var(--line);
  border-radius:99px;padding:11px 22px;transition:.25s}
.case-links a:hover{border-color:var(--acc);background:rgba(109,92,255,.12)}
@media(max-width:700px){.case-panel{padding:70px 26px}}

/* ---------- blog pages ---------- */
.page{position:relative;z-index:10;padding:150px 0 90px;min-height:100vh}
.page-title{font-family:var(--disp);font-size:clamp(34px,6vw,58px);font-weight:700;letter-spacing:-.02em;margin-bottom:50px}
.article{width:min(760px,92vw);margin:0 auto}
.article h1{font-family:var(--disp);font-size:clamp(30px,5vw,48px);letter-spacing:-.02em;line-height:1.2;margin:16px 0 26px}
.article time{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--acc2)}
.article-cover{border-radius:20px;overflow:hidden;margin-bottom:36px}
.article-body{color:#cfcde4;font-size:17px;line-height:1.85}
.article-body p{margin-bottom:18px}
.article-body h2{font-family:var(--disp);font-size:24px;margin:34px 0 14px;color:var(--ink)}
.article-body a{color:var(--acc2);border-bottom:1px solid rgba(56,225,198,.3)}
.article-body ul{margin:0 0 18px 22px}
.back-link{display:inline-block;margin-bottom:30px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);transition:color .2s}
.back-link:hover{color:var(--acc2)}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
}
body.reduced #webgl{display:none}
body.reduced{background:radial-gradient(1200px 800px at 60% -10%,#141028 0%,var(--bg) 60%)}
body.reduced .vision-line{color:var(--ink)}

/* ============================================================
   Clients chapter
   ============================================================ */
.clients-lead{max-width:640px;margin-bottom:46px}
.client-track{overflow:hidden;margin-bottom:20px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.client-row{display:flex;gap:18px;width:max-content;will-change:transform;padding:4px 0}
.client{display:flex;flex-direction:column;justify-content:center;gap:3px;min-width:230px;
  border:1px solid var(--line);border-radius:16px;padding:18px 22px;background:var(--glass);
  backdrop-filter:blur(8px);transition:.3s;position:relative}
.client:hover{border-color:var(--acc);transform:translateY(-3px)}
.client img{height:30px;width:auto;object-fit:contain;margin-bottom:6px;align-self:flex-start}
.client-dot{color:var(--acc2);font-size:13px}
.client-name{font-family:var(--disp);font-weight:600;font-size:15.5px;letter-spacing:-.01em}
.client-srv{font-size:12px;color:var(--dim)}

/* ============================================================
   Theme toggle button
   ============================================================ */
.theme-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;
  cursor:pointer;position:relative;color:var(--ink);transition:border-color .3s,transform .2s;overflow:hidden}
.theme-btn:hover{border-color:var(--acc);transform:translateY(-1px)}
.tb-ico{position:absolute;inset:0;display:grid;place-items:center;font-size:16px;transition:transform .45s var(--easing),opacity .35s}
.tb-sun{transform:translateY(120%) rotate(90deg);opacity:0;color:#f7b955}
.tb-moon{transform:none;opacity:1;color:#b9aeff}
body.light .tb-sun{transform:none;opacity:1}
body.light .tb-moon{transform:translateY(-120%) rotate(-90deg);opacity:0}

/* ============================================================
   LIGHT THEME — full design system override
   ============================================================ */
body.light{
  --acc2:#0b9484;
  --bg:#f5f5fb;
  --ink:#14132a;
  --dim:#4e4c6b;
  --faint:#8b89a6;
  --line:rgba(20,19,50,.13);
  --glass:rgba(255,255,255,.66);
  background:var(--bg);color:var(--ink);
}
body.light ::selection{background:var(--acc);color:#fff}
body.light ::-webkit-scrollbar-track{background:#e9e9f2}
body.light ::-webkit-scrollbar-thumb{background:#c4c2d8}
body.light ::-webkit-scrollbar-thumb:hover{background:var(--acc)}

body.light .vignette{background:radial-gradient(ellipse at 50% 45%,transparent 60%,rgba(150,150,190,.18) 100%)}
body.light .grain{opacity:.03}
body.light.reduced{background:radial-gradient(1200px 800px at 60% -10%,#e6e2ff 0%,var(--bg) 60%)}

/* preloader */
body.light .loader{background:var(--bg)}
body.light .loader-line{background:rgba(20,19,50,.15)}

/* header + menu */
body.light .hd.scrolled{background:rgba(245,245,251,.72);border-bottom-color:var(--line)}
body.light .menu{background:rgba(243,243,250,.94)}
body.light .menu a{color:var(--dim)}
body.light .menu a:hover{color:var(--ink)}
body.light .menu-btn span{background:var(--ink)}
body.light .cursor{border-color:rgba(20,19,50,.4)}

/* hero */
body.light .hero-name .c{background:linear-gradient(180deg,#211d4e 30%,var(--acc) 95%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
body.light .hero-kicker{background:rgba(255,255,255,.6)}
body.light .mouse{border-color:var(--faint)}

/* identity */
body.light .stat3 b{background:linear-gradient(135deg,#1c1940,var(--acc));-webkit-background-clip:text;background-clip:text;color:transparent}
body.light .identity-mono{background:radial-gradient(circle at 30% 20%,rgba(109,92,255,.25),transparent 60%),
  radial-gradient(circle at 75% 80%,rgba(56,225,198,.18),transparent 55%),#fff}
body.light .identity-meta{background:linear-gradient(transparent,rgba(255,255,255,.95))}
body.light .big-p{color:#302e52}

/* vision */
body.light .vision-line{color:rgba(20,19,50,.13)}
body.light .vision-line span{background:linear-gradient(90deg,#14132a 50%,rgba(20,19,50,.13) 50%);
  background-size:200% 100%;background-position:100% 0;-webkit-background-clip:text;background-clip:text;color:transparent}

/* cards & panels */
body.light .skill-group,body.light .repo,body.light .post,body.light .voice,
body.light .newsletter,body.light .prod,body.light .client{background:rgba(255,255,255,.7)}
body.light .chip{background:rgba(255,255,255,.65)}
body.light .ring i{background:#f0eff8}
body.light .pcard{background:rgba(255,255,255,.78)}
body.light .pcard p{color:var(--dim)}
body.light .pgrad{background:radial-gradient(circle at 25% 25%,hsla(var(--h),80%,62%,.45),transparent 55%),
  radial-gradient(circle at 80% 75%,hsla(calc(var(--h) + 60),80%,55%,.3),transparent 55%),#eceaf8}
body.light .pgrad span{color:#14132a;opacity:.65}
body.light .prod{background:linear-gradient(160deg,rgba(255,255,255,.86),rgba(255,255,255,.6))}

/* timeline */
body.light .tyear{background:linear-gradient(135deg,#1c1940,var(--acc));-webkit-background-clip:text;background-clip:text;color:transparent}
body.light .tline-bar{background:rgba(20,19,50,.12)}
body.light .tstep::before{background:var(--bg)}

/* contact */
body.light .contact-form{background:rgba(255,255,255,.8)}
body.light .contact-form input,body.light .contact-form textarea,body.light .nl-form input[type=email]{
  background:rgba(245,245,251,.9);color:var(--ink)}
body.light .voice p{color:#3a3860}
body.light .c-lines a{color:var(--ink)}
body.light .socials a:hover{color:#fff}

/* ending + overlays */
body.light .end-cta{background:linear-gradient(90deg,#14132a,var(--acc) 60%,#0c9a86);
  -webkit-background-clip:text;background-clip:text;color:transparent}
body.light .case-bg{background:rgba(240,240,248,.72)}
body.light .case-panel{background:#f7f7fc;border-left-color:var(--line)}
body.light .case-body{color:#3a3860}
body.light .case-x{color:var(--ink)}
body.light .article-body{color:#302e52}
body.light .article-body h2{color:var(--ink)}
body.light .msg-body{color:#3a3860}

/* ============================================================
   Industries tags
   ============================================================ */
.inds{margin-top:52px;border-top:1px solid var(--line);padding-top:30px}
.inds-title{display:block;font-family:var(--disp);font-size:11.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--faint);margin-bottom:16px}
body[data-lang="bn"] .inds-title{letter-spacing:.08em}
.inds-tags{display:flex;flex-wrap:wrap;gap:9px}
.inds-tags span{font-size:12.5px;color:var(--dim);border:1px solid var(--line);border-radius:99px;padding:6px 14px;transition:.25s}
.inds-tags span:hover{color:var(--ink);border-color:var(--acc)}

/* ============================================================
   Book a Session
   ============================================================ */
.bk-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;margin-top:10px}
.bk-col h4,.bk-form h4{font-family:var(--disp);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--acc2);margin-bottom:14px}
body[data-lang="bn"] .bk-col h4,body[data-lang="bn"] .bk-form h4{letter-spacing:.06em}
.bk-dates{display:flex;flex-wrap:wrap;gap:10px}
.bk-date{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:74px;padding:12px 10px;cursor:pointer;
  background:var(--glass);border:1px solid var(--line);border-radius:14px;color:var(--dim);transition:.25s;font-family:var(--body)}
.bk-date b{font-family:var(--disp);font-size:21px;color:var(--ink);font-weight:700}
.bk-date span{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase}
.bk-date:hover{border-color:var(--acc);transform:translateY(-2px)}
.bk-date.on{border-color:var(--acc);background:rgba(109,92,255,.12);box-shadow:0 8px 26px rgba(109,92,255,.18)}
.bk-times{display:flex;flex-wrap:wrap;gap:10px;min-height:44px}
.bk-time{padding:10px 18px;cursor:pointer;background:var(--glass);border:1px solid var(--line);border-radius:99px;
  color:var(--ink);font-size:13.5px;font-family:var(--disp);letter-spacing:.04em;transition:.25s}
.bk-time:hover{border-color:var(--acc2);transform:translateY(-2px)}
.bk-time.on{background:linear-gradient(135deg,var(--acc),#4a3af0);border-color:transparent;color:#fff;box-shadow:0 8px 26px rgba(109,92,255,.35)}
.bk-form{border:1px solid var(--line);border-radius:24px;padding:32px;background:rgba(10,10,20,.5);backdrop-filter:blur(12px)}
.bk-form label{display:block;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin:16px 0 7px}
.bk-form label:first-of-type{margin-top:0}
.bk-form input,.bk-form textarea{width:100%;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:12px;
  color:var(--ink);padding:13px 16px;font-size:14.5px;outline:none;font-family:var(--body);transition:border .2s;resize:vertical}
.bk-form input:focus,.bk-form textarea:focus{border-color:var(--acc)}
.bk-form .btn-solid:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.bk-none{border:1px dashed var(--line);border-radius:20px;padding:34px;text-align:center;color:var(--dim);max-width:560px}
.bk-none p{margin-bottom:18px}
@media(max-width:900px){.bk-grid{grid-template-columns:1fr;gap:34px}}
body.light .bk-form{background:rgba(255,255,255,.8)}
body.light .bk-form input,body.light .bk-form textarea{background:rgba(245,245,251,.9);color:var(--ink)}
body.light .bk-date.on{background:rgba(109,92,255,.1)}
body.light .bk-time{color:var(--ink)}
body.light .bk-time.on{color:#fff}

/* ============================================================
   WhatsApp floating lead button
   ============================================================ */
/* ============================================================
   Back to top
   ============================================================ */
.btt{position:fixed;left:24px;bottom:24px;z-index:55;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line);background:rgba(10,10,20,.55);backdrop-filter:blur(10px);color:var(--ink);
  cursor:pointer;display:grid;place-items:center;font-size:16px;
  opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .35s,visibility .35s,transform .35s,border-color .25s}
.btt.show{opacity:1;visibility:visible;transform:none}
.btt:hover{border-color:var(--acc);transform:translateY(-3px)}
.btt i{font-style:normal;background:linear-gradient(135deg,var(--acc),var(--acc2));
  -webkit-background-clip:text;background-clip:text;color:transparent;font-weight:700}
body.light .btt{background:rgba(255,255,255,.8)}
@media(max-width:900px){.btt{left:14px;bottom:14px;width:44px;height:44px}}

.wa-float{position:fixed;right:24px;bottom:24px;z-index:55;width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,#2ad366,#0f9d58);
  box-shadow:0 10px 30px rgba(18,180,90,.4);transition:transform .25s, box-shadow .25s}
.wa-float:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 16px 40px rgba(18,180,90,.55)}
.wa-float::before{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid rgba(42,211,102,.55);animation:wa-pulse 2.2s infinite}
@keyframes wa-pulse{0%{transform:scale(1);opacity:1}100%{transform:scale(1.7);opacity:0}}
.wa-tip{position:absolute;right:68px;top:50%;transform:translateY(-50%);white-space:nowrap;font-size:12.5px;
  background:rgba(5,5,12,.9);border:1px solid var(--line);color:var(--ink);border-radius:9px;padding:7px 13px;
  opacity:0;pointer-events:none;transition:opacity .25s}
.wa-float:hover .wa-tip{opacity:1}
body.light .wa-tip{background:rgba(255,255,255,.95);color:#14132a}
@media(max-width:900px){.wa-float{right:16px;bottom:16px;width:52px;height:52px}}

/* ============================================================
   Small-screen polish (v1.4.1 QA pass)
   ============================================================ */
@media(max-width:600px){
  .hd-right{gap:10px}
  .theme-btn,.menu-btn{width:38px;height:38px}
  .menu nav{max-height:78vh;overflow-y:auto;padding:0 6vw;-webkit-overflow-scrolling:touch}
  .menu a{font-size:clamp(19px,3.6vh,28px)}
  .contact-form{padding:26px 18px}
  .bk-form{padding:24px 16px}
  .bk-date{min-width:64px;padding:10px 8px}
  .voice{padding:24px 20px}
  .foot{flex-direction:column;gap:6px;text-align:center;align-items:center}
  .newsletter{padding:20px 16px}
  .nl-form{flex-direction:column}
  .nl-form button{width:100%}
  .identity-card{margin:0 auto}
  .case-panel{padding:64px 18px 40px}
  .stats{gap:26px}
  .inds-tags span{font-size:11.5px;padding:5px 11px}
  .end-cta{word-break:break-word}
}