/* ============================================================================
   NetPro BD — layout.css
   Preloader, chrome, navigation, hero, section grids, contact, footer, floats
   -------------------------------------------------------------------------- */

/* ------------------------------ 1. PRELOADER ------------------------------ */
.preloader {
  position: fixed; inset: 0; z-index: 10000;
  display: grid; place-items: center;
  background: radial-gradient(circle at 50% 40%, var(--pre-hi), var(--bg) 72%);
  transition: opacity .6s var(--ease), visibility .6s;
}
.preloader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader__inner { text-align: center; }
.preloader__logo { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 22px; }
.preloader__mark {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: var(--grad-brand);
  color: var(--on-brand);
  font-family: var(--font-head); font-weight: 800; font-size: 1.4rem;
  animation: markPulse 1.6s var(--ease) infinite;
}
.preloader__word { font-family: var(--font-head); font-size: 1.35rem; font-weight: 600; color: var(--heading); }
.preloader__word b { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.preloader__bar {
  width: 200px; height: 3px; margin: 0 auto 14px;
  border-radius: 99px; background: var(--tint-c); overflow: hidden;
}
.preloader__bar span {
  display: block; height: 100%; width: 0%;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(34,211,238,.7);
  transition: width .3s linear;
}
.preloader__text { color: var(--text-mute); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; }

/* ------------------------------ 2. SCROLL PROGRESS ------------------------ */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 1200;
  width: 100%; height: 3px;
  background: transparent; pointer-events: none;
}
.scroll-progress span {
  display: block; height: 100%; width: 100%;
  transform: scaleX(0);                  /* GPU: no layout while scrolling */
  transform-origin: left center;
  background: var(--grad-brand);
  box-shadow: 0 0 10px rgba(34,211,238,.8);
}

/* ------------------------------ 3. CURSOR GLOW ---------------------------- */
.cursor-glow {
  position: fixed; top: 0; left: 0; z-index: 900;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,.14), rgba(124,92,255,.05) 45%, transparent 68%);
  pointer-events: none;
  opacity: 0;
  transition: opacity .5s var(--ease);
  will-change: transform;
}

/* ------------------------------ 4. TOP BAR -------------------------------- */
.topbar {
  position: relative; z-index: 900;
  background: var(--topbar);
  backdrop-filter: blur(12px) saturate(150%);
  border-bottom: 1px solid var(--line);
  font-size: .78rem;
  letter-spacing: .01em;
}
.topbar__row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 7px; }
.topbar__info { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; color: var(--text-mute); transition: color var(--t); }
.topbar__item .icon { color: color-mix(in srgb, var(--brand) 75%, var(--text-mute)); width: 14px; height: 14px; }
a.topbar__item:hover { color: var(--brand); }
.topbar__actions { display: flex; align-items: center; gap: 18px; }
.topbar__social { display: flex; align-items: center; gap: 6px; }
.topbar__social a {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--text-mute);
  transition: color var(--t), transform var(--t);
}
.topbar__social a .icon { width: 14px; height: 14px; }
.topbar__social a:hover { color: var(--brand); transform: translateY(-2px); }

/* ------------------------------ 5. NAVBAR --------------------------------- */
.navbar {
  position: sticky; top: 0; z-index: 1000;
  background: transparent;   /* blur lives on ::before so fixed-position
                                children (drawer + scrim) are never trapped
                                in a filtered containing block */
  transition: box-shadow var(--t);
}
.navbar::before {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background: var(--glass-bar);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid transparent;
  transition: background var(--t), border-color var(--t), box-shadow var(--t);
}
.navbar.is-scrolled::before {
  background: var(--glass-bar-hi);
  border-bottom-color: var(--line);
  box-shadow: 0 12px 34px rgba(0, 0, 0, .45);
}
.navbar__row { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: var(--nav-h); }

/* Brand */
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand__mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: linear-gradient(140deg, rgba(34,211,238,.2), rgba(124,92,255,.14));
  border: 1px solid rgba(34, 211, 238, .35);
  color: var(--brand);
  transition: var(--t);
}
.brand__mark .icon { width: 22px; height: 22px; }
.brand:hover .brand__mark { transform: rotate(-10deg) scale(1.06); box-shadow: var(--sh-brand); background: var(--grad-brand); color: var(--on-brand); }
.brand__text { font-family: var(--font-head); font-size: 1.32rem; font-weight: 600; color: var(--heading); letter-spacing: -.02em; }
.brand__text b { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 800; }
.brand__text em { font-style: normal; font-size: .68rem; font-weight: 700; letter-spacing: .18em; color: var(--accent); margin-left: 6px; vertical-align: super; }

/* Nav links */
.nav__top { display: none; }   /* drawer-only header, revealed at ≤900px */
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative;
  display: block;
  padding: 10px 14px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-dim);
  border-radius: var(--r-xs);
  transition: color var(--t);
}
.nav__link::after {
  content: '';
  position: absolute; left: 14px; right: 14px; bottom: 4px;
  height: 2px; border-radius: 2px;
  background: var(--grad-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.nav__link:hover { color: var(--heading); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--brand); }

.navbar__actions { display: flex; align-items: center; gap: 14px; }
.lang-switch--compact { display: none; }

/* Hamburger */
.hamburger {
  display: none;
  width: 44px; height: 44px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--tint-b);
}
.hamburger span {
  display: block; width: 20px; height: 2px;
  background: var(--heading); border-radius: 2px;
  transition: transform .35s var(--ease), opacity .25s;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(.3); }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-scrim {
  position: fixed; inset: 0; z-index: 998;
  background: rgba(2, 5, 12, .7);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--t);
}
.nav-scrim.is-visible { opacity: 1; }

/* ------------------------------ 6. HERO ----------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(60px, 8vw, 108px) clamp(90px, 12vw, 150px);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.hero__grid {
  position: absolute; inset: -20%;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 30%, #000 10%, transparent 72%);
  animation: gridDrift 28s linear infinite;
}
.orb {
  position: absolute; border-radius: 50%;
  filter: blur(70px); opacity: var(--orb-opacity);
  will-change: transform;
}
.orb--1 { width: 480px; height: 480px; top: -120px; left: -100px; background: radial-gradient(circle, rgba(34,211,238,.30), transparent 65%); animation: orbFloat 18s ease-in-out infinite; }
.orb--2 { width: 420px; height: 420px; bottom: -140px; right: -60px; background: radial-gradient(circle, rgba(124,92,255,.26), transparent 65%); animation: orbFloat 22s ease-in-out infinite reverse; }
.orb--3 { width: 300px; height: 300px; top: 34%; right: 32%; background: radial-gradient(circle, rgba(129,140,248,.16), transparent 65%); animation: orbFloat 26s ease-in-out infinite; }

.hero__content { position: relative; }
.hero__content::before {
  content: '';
  position: absolute; z-index: -1;
  inset: -12% -18% auto -14%;
  height: 70%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--brand) 13%, transparent), transparent 72%);
  filter: blur(28px);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  align-items: center;
  gap: clamp(32px, 5vw, 68px);
}

.hero__badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px;
  border-radius: var(--r-pill);
  background: rgba(34, 211, 238, .08);
  border: 1px solid rgba(34, 211, 238, .26);
  color: var(--brand);
  font-size: .84rem; font-weight: 600;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero__title {
  font-size: var(--fs-hero);
  line-height: 1.16;
  margin-bottom: 22px;
  letter-spacing: -.02em;
}
.hero__title-hl { display: block; }

/* No-JS fallback: gradient painted on the element itself */
html:not(.js) .hero__title-hl {
  background: var(--grad-brand);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: gradShift 8s ease infinite;
}

/* With JS the headline is split into words — each word carries its own
   clipped gradient so the mask never fights the reveal transform. */
.js .hero__title-hl .word > span {
  background: var(--grad-brand);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: wordUp .8s var(--ease) forwards, gradShift 8s ease infinite;
  animation-delay: var(--w-delay, 0ms), 0s;
}

.hero__desc {
  color: var(--text-dim);
  font-size: 1.02rem;
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 32px;
  text-wrap: pretty;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }

.hero__trust { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.hero__trust li { display: inline-flex; align-items: center; gap: 8px; font-size: .84rem; color: var(--text-dim); }
.hero__trust .icon { color: var(--success); }

/* Hero visual — live network panel */
.hero__visual { position: relative; display: flex; justify-content: center; }
.netpanel {
  position: relative;
  width: 100%; max-width: 460px;
  padding: 18px;
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, var(--tint-c), var(--tint-a)), var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow: var(--sh-3);
  backdrop-filter: blur(16px);
  transform-style: preserve-3d;
}
.netpanel__screen {
  position: relative;
  height: 220px;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: radial-gradient(circle at 50% 40%, #0d1b31, #060c18 75%);
  border: 1px solid var(--line);
}
.netpanel__screen canvas { width: 100%; height: 100%; display: block; }
.netpanel__scan {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent, rgba(34,211,238,.12), transparent);
  height: 42%;
  animation: scan 4.5s linear infinite;
  pointer-events: none;
}

.netpanel__head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 4px 12px;
}
.netpanel__title { display: inline-flex; align-items: center; gap: 8px; font-size: .84rem; font-weight: 600; color: var(--heading); }
.netpanel__title .icon { color: var(--brand); }
.netpanel__status { display: inline-flex; align-items: center; gap: 7px; font-size: .74rem; color: var(--success); }

.netpanel__stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  padding-bottom: 14px;
}
.nstat {
  padding: 12px;
  border-radius: var(--r-sm);
  background: var(--tint-b);
  border: 1px solid var(--line);
  text-align: center;
  transition: var(--t);
}
.nstat:hover { border-color: rgba(34,211,238,.4); transform: translateY(-3px); }
.nstat__label { display: block; font-size: .68rem; color: var(--text-mute); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 5px; }
html[data-lang="bn"] .nstat__label { letter-spacing: 0; text-transform: none; font-size: .74rem; }
.nstat__value { display: block; font-family: var(--font-mono); font-size: 1.02rem; font-weight: 600; color: var(--brand); }
.nstat__value small { font-size: .68rem; color: var(--text-dim); }

.netpanel__term {
  height: 124px;                 /* fixed: the typewriter must never resize the panel */
  overflow: hidden;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: rgba(2, 6, 14, .72);
  border: 1px solid rgba(34, 211, 238, .16);
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.75;
  color: #7fe6f5;
  overflow: hidden;
}
.netpanel__term .line { display: block; opacity: 0; animation: termLine .4s var(--ease) forwards; }
.netpanel__term .caret { display: inline-block; width: 7px; height: 13px; background: var(--brand); vertical-align: -2px; animation: blink 1s steps(2) infinite; }

/* Floating chips */
.float-chip {
  position: absolute;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border-radius: var(--r-pill);
  background: var(--float-bg);
  border: 1px solid var(--line-strong);
  color: var(--text);
  font-size: .78rem; font-weight: 600;
  box-shadow: var(--sh-2);
  backdrop-filter: blur(10px);
  z-index: 3;
}
.float-chip .icon { color: var(--brand); }
.float-chip--a { top: 6%; left: -4%; animation: floatY 5s ease-in-out infinite; }
.float-chip--b { bottom: 12%; right: -4%; animation: floatY 6.5s ease-in-out infinite reverse; }
.float-chip--b .icon { color: var(--success); }

/* ------------------------------ 7. STATS WRAP ----------------------------- */
.stats-wrap { position: relative; z-index: 5; margin-top: clamp(-90px, -7vw, -60px); padding-bottom: 10px; }

/* ------------------------------ 8. MARQUEE -------------------------------- */
.marquee-section {
  padding-block: 26px;
  border-block: 1px solid var(--line);
  background: var(--tint-a);
  overflow: hidden;
  margin-top: clamp(48px, 6vw, 76px);
}
.marquee {
  display: flex;
  width: max-content;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee__track {
  display: flex; align-items: center; gap: 34px;
  padding-right: 34px;
  animation: marquee 32s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  font-family: var(--font-head);
  font-size: 1.02rem; font-weight: 700;
  letter-spacing: .14em;
  color: var(--text-mute);
  opacity: .8;
  transition: color var(--t), opacity var(--t);
  white-space: nowrap;
}
.marquee__item:hover { color: var(--brand); opacity: 1; }
.marquee__sep { color: rgba(34,211,238,.35); font-size: .6rem; }

/* ------------------------------ 9. SECTION GRIDS -------------------------- */
.services-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.why-grid      { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.pricing-grid  { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; align-items: stretch; }
.portfolio-grid{ display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }

/* About */
.about { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(34px, 5vw, 66px); align-items: center; }
.about__media { position: relative; }
.about__photo {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-2);
  border: 1px solid var(--line);
}
.about__photo img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.about__visual {
  position: relative;
  margin: -52px 30px 0 6px;          /* overlaps the photo — corporate collage */
  padding: 26px;
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, var(--tint-c), var(--tint-a)), var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow: var(--sh-3);
  overflow: hidden;
}
.about__visual::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 30% 10%, rgba(34,211,238,.14), transparent 70%);
}

/* Fake server rack visual */
.rack { position: relative; display: grid; gap: 12px; }
.rack__unit {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  background: linear-gradient(90deg, var(--tint-b), var(--tint-a));
  border: 1px solid var(--line);
  transition: var(--t);
}
.rack__unit:hover { border-color: rgba(34,211,238,.4); transform: translateX(5px); }
.rack__leds { display: flex; gap: 5px; }
.rack__leds i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px currentColor;
  animation: ledBlink 2.4s infinite;
}
.rack__leds i:nth-child(2) { background: var(--brand); animation-delay: .5s; }
.rack__leds i:nth-child(3) { background: var(--warning); animation-delay: 1.1s; }
.rack__label { font-family: var(--font-mono); font-size: .72rem; color: var(--text-dim); letter-spacing: .06em; flex: 1; }
.rack__bars { display: flex; align-items: flex-end; gap: 3px; height: 20px; }
.rack__bars i {
  width: 4px; border-radius: 2px;
  background: var(--grad-brand);
  animation: barDance 1.6s ease-in-out infinite;
}
.rack__bars i:nth-child(1) { height: 40%; animation-delay: 0s; }
.rack__bars i:nth-child(2) { height: 70%; animation-delay: .2s; }
.rack__bars i:nth-child(3) { height: 55%; animation-delay: .4s; }
.rack__bars i:nth-child(4) { height: 90%; animation-delay: .6s; }

.about__exp {
  position: absolute; right: -12px; bottom: -22px;
  display: flex; align-items: center; gap: 14px;
  padding: 16px 22px;
  border-radius: var(--r-lg);
  box-shadow: var(--sh-3);
  animation: floatY 6s ease-in-out infinite;
}
.about__exp-num { font-family: var(--font-head); font-size: 2rem; font-weight: 800; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; }
.about__exp-text { font-size: .8rem; color: var(--text-dim); max-width: 130px; line-height: 1.5; }

/* ------------------------------ 10. CTA BANNER ---------------------------- */
.cta-banner {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(130deg, #062a52, #0b3f7a 45%, #123a6e);
  border: 1px solid rgba(34,211,238,.28);
  box-shadow: var(--sh-3);
}
.cta-banner__bg { position: absolute; inset: 0; overflow: hidden; }
.cta-banner__bg span {
  position: absolute; border-radius: 50%; filter: blur(48px); opacity: .55;
}
.cta-banner__bg span:nth-child(1) { width: 260px; height: 260px; top: -90px; left: 6%; background: rgba(34,211,238,.55); animation: orbFloat 16s ease-in-out infinite; }
.cta-banner__bg span:nth-child(2) { width: 220px; height: 220px; bottom: -100px; right: 12%; background: rgba(124,92,255,.5); animation: orbFloat 20s ease-in-out infinite reverse; }
.cta-banner__bg span:nth-child(3) { width: 180px; height: 180px; top: 20%; right: 32%; background: rgba(255,138,31,.35); animation: orbFloat 24s ease-in-out infinite; }
.cta-banner__content { position: relative; z-index: 2; padding: clamp(38px, 6vw, 66px) clamp(24px, 5vw, 60px); text-align: center; }
.cta-banner__content h2 { font-size: clamp(1.5rem, 3.2vw, 2.3rem); margin-bottom: 12px; color: #fff; }
.cta-banner__content p { color: rgba(255,255,255,.85); margin-bottom: 30px; font-size: 1rem; }
.cta-banner__btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ------------------------------ 11. CONTACT ------------------------------- */
.contact { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 26px; align-items: start; }
.contact__info { display: grid; gap: 14px; }
.info-card { display: flex; gap: 16px; padding: 20px 22px; align-items: flex-start; }
.info-card:hover { transform: translateX(6px); border-color: rgba(34,211,238,.35); }
.info-card__icon {
  width: 46px; height: 46px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: rgba(34,211,238,.1);
  border: 1px solid rgba(34,211,238,.22);
  color: var(--brand);
  transition: var(--t);
}
.info-card:hover .info-card__icon { background: var(--grad-brand); color: var(--on-brand); transform: rotate(-8deg); }
.info-card h4 { font-size: .96rem; margin-bottom: 3px; }
.info-card p { color: var(--text-dim); font-size: .87rem; line-height: 1.6; }

.map-box {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  height: 190px;
  background: var(--surface);
}
.map-box iframe { width: 100%; height: 100%; border: 0; filter: var(--map-filter); transition: filter var(--t-slow); }
.map-box:hover iframe { filter: grayscale(.35) invert(.9) contrast(.9) hue-rotate(180deg); }

.contact-form {
  padding: clamp(26px, 4vw, 40px);
  border-radius: var(--r-xl);
  background: linear-gradient(155deg, var(--tint-b), var(--tint-a)), var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--sh-2);
  position: relative;
}

/* ------------------------------ 12. FOOTER -------------------------------- */
.footer::before {                    /* glowing hairline that crowns the footer */
  content: '';
  position: absolute; top: -1px; left: 12%; right: 12%; height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--brand) 65%, transparent), transparent);
}
.footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 80px);
  padding-top: clamp(52px, 7vw, 84px);
  background: linear-gradient(180deg, var(--bg-2), var(--footer-end));
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.footer__glow {
  position: absolute; top: -160px; left: 50%; transform: translateX(-50%);
  width: 720px; height: 320px;
  background: radial-gradient(ellipse, rgba(34,211,238,.16), transparent 70%);
  pointer-events: none;
}
.footer__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: clamp(28px, 4vw, 48px);
  padding-bottom: 46px;
}
.brand--footer { margin-bottom: 18px; }
.footer__col p { color: var(--text-dim); font-size: .89rem; line-height: 1.85; margin-bottom: 20px; }
.footer__col h4 { font-size: 1rem; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer__col h4::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 34px; height: 2px; border-radius: 2px;
  background: var(--grad-brand);
}
.footer__col ul { display: grid; gap: 11px; }
.footer__col ul a {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--text-dim); font-size: .89rem;
  transition: var(--t);
}
.footer__col ul a::before {
  content: ''; width: 0; height: 1px;
  background: var(--brand);
  transition: width var(--t);
}
.footer__col ul a:hover { color: var(--brand); padding-left: 4px; }
.footer__col ul a:hover::before { width: 14px; }

.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: var(--tint-b);
  border: 1px solid var(--line);
  color: var(--text-dim);
  transition: var(--t);
}
.footer__social a:hover {
  background: var(--grad-brand); color: var(--on-brand);
  border-color: transparent;
  transform: translateY(-4px) rotate(-8deg);
  box-shadow: var(--sh-brand);
}

.footer__bottom {
  position: relative;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-block: 22px;
  border-top: 1px solid var(--line);
  color: var(--text-mute); font-size: .84rem;
}
.footer__bottom a:hover { color: var(--brand); }
.footer__legal { display: flex; gap: 22px; }

/* ------------------------------ 13. FLOATING UI --------------------------- */
.wa-float {
  position: fixed; left: 24px; bottom: 24px; z-index: 950;
  display: flex; align-items: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: #fff;
  box-shadow: 0 12px 28px rgba(37, 211, 102, .45);
  transition: width .4s var(--ease), transform var(--t);
  overflow: hidden;
  animation: waPulse 2.6s infinite;
}
.wa-float .icon { width: 26px; height: 26px; margin-left: 15px; flex-shrink: 0; }
.wa-float:hover { width: 190px; transform: translateY(-3px); animation-play-state: paused; }
.wa-float__tip {
  white-space: nowrap;
  padding-left: 10px;
  font-size: .84rem; font-weight: 600;
  opacity: 0;
  transition: opacity .3s var(--ease) .1s;
}
.wa-float:hover .wa-float__tip { opacity: 1; }

.back-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 950;
  width: 50px; height: 50px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--float-bg);
  border: 1px solid var(--line-strong);
  color: var(--brand);
  backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden;
  transform: translateY(16px) scale(.9);
  transition: var(--t);
  box-shadow: var(--sh-2);
}
.back-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.back-top:hover { background: var(--grad-brand); color: var(--on-brand); border-color: transparent; transform: translateY(-4px); }
.back-top__ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.back-top__track, .back-top__bar { fill: none; stroke-width: 2.4; }
.back-top__track { stroke: var(--tint-c); }
.back-top__bar {
  stroke: var(--brand);
  stroke-linecap: round;
  stroke-dasharray: 126;
  stroke-dashoffset: 126;
  transition: stroke-dashoffset .12s linear;
}
.back-top__ico { position: relative; z-index: 2; }

/* ------------------------------ 14. THEME SWEEP --------------------------- */
/* A single composited layer that washes out from the toggle while the
   registered colour tokens interpolate underneath — the switch reads as one
   continuous, GPU-only motion. */
.theme-sweep {
  position: fixed; inset: 0;
  z-index: 1250;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(circle at var(--sx, 50%) var(--sy, 50%),
              color-mix(in srgb, var(--brand) 26%, transparent),
              color-mix(in srgb, var(--brand-3) 12%, transparent) 34%,
              transparent 68%);
  will-change: opacity, transform;
}

/* View-Transition theme switch: fade the NEW snapshot in over the frozen OLD
   one — a single compositor blend, no mid-animation repaint on screen. */
::view-transition-old(root) { animation: none; }
::view-transition-new(root) { animation: vt-fade-in .42s cubic-bezier(.4, 0, .2, 1) both; }
@keyframes vt-fade-in { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  ::view-transition-new(root) { animation-duration: .01s; }
}
/* While the new snapshot is captured, colours must already be final */
html.vt-freeze, html.vt-freeze *, html.vt-freeze *::before, html.vt-freeze *::after {
  transition: none !important;
}

/* Trust-band label (sits inside .marquee-section) */
.partners__label {
  text-align: center;
  margin-bottom: 16px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text-mute);
}
html[data-lang="bn"] .partners__label { letter-spacing: 0; text-transform: none; font-size: var(--fs-sm); }

/* Scroll cue — the quiet "there is more below" signal premium heroes carry */
.hero__scroll {
  position: absolute; left: 50%; bottom: 26px;
  transform: translateX(-50%);
  display: grid; place-items: center; gap: 8px;
  color: var(--text-mute);
  font-size: .68rem; font-weight: 600;
  letter-spacing: .24em; text-transform: uppercase;
  transition: color var(--t);
}
.hero__scroll:hover { color: var(--brand); }
.hero__scroll i {
  width: 1px; height: 44px; display: block;
  background: linear-gradient(180deg, var(--brand), transparent);
  animation: cueDrop 2.2s var(--ease) infinite;
  transform-origin: top;
}
html[data-lang="bn"] .hero__scroll { letter-spacing: 0; text-transform: none; font-size: .72rem; }
@media (max-height: 760px) { .hero__scroll { display: none; } }

/* ------------------------------ 16. NOC BAND ------------------------------ */
.noc {
  padding-block: var(--section-y);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border-block: 1px solid var(--line);
}
.noc__grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(30px, 5vw, 68px);
  align-items: center;
}
.noc__photo {
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--sh-3);
}
.noc__photo img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.noc__copy .section-desc { margin-bottom: 22px; }
.noc__list { list-style: none; display: grid; gap: 12px; }
.noc__list li { display: flex; align-items: center; gap: 10px; color: var(--text-dim); font-weight: 500; }
.noc__list .icon { color: var(--brand); flex: none; }

/* hero fibre photo, whisper-quiet behind the live panel */
.hero__visual { position: relative; }
.hero__shot {
  position: absolute; z-index: 0;
  top: -46px; right: -74px; width: 70%;
  margin: 0; padding: 7px;
  background: var(--bg);
  border: 1px solid var(--line); border-radius: 20px;
  box-shadow: var(--sh-2);
  transform: rotate(2.5deg);
}
.hero__shot img {
  display: block; width: 100%; height: 176px; object-fit: cover;
  border-radius: 14px;
}
.hero__shot-cap {
  position: absolute; top: 15px; left: 15px;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 11px; border-radius: 999px;
  background: rgb(5 10 22 / .72); color: #e8eefb;
  font-size: 11px; font-weight: 700; letter-spacing: .02em;
  backdrop-filter: blur(6px);
}
.hero__visual .netpanel { z-index: 1; }
@media (max-width: 900px) {
  .hero__shot { position: static; width: 100%; max-width: 460px; margin: 0 auto 16px; transform: none; }
  .hero__shot img { height: 170px; }
}
.hero__visual::before {
  content: '';
  position: absolute; inset: -4% -9% -4% -5%;
  background: url('../img/hero-fiber.jpg') center / cover no-repeat;
  border-radius: 48px;
  opacity: var(--photo-o);
  -webkit-mask-image: radial-gradient(72% 72% at 62% 42%, #000 30%, transparent 78%);
          mask-image: radial-gradient(72% 72% at 62% 42%, #000 30%, transparent 78%);
  pointer-events: none;
}