/* ====================================================
   OTWBD — On The Way Bangladesh
   Premium Modern IT Company Website
   ==================================================== */

:root {
  /* Brand palette */
  --brand:        #14B8A6;
  --brand-dark:   #0D9488;
  --brand-darker: #0F766E;
  --brand-soft:   #CCFBF1;
  --navy:         #0B1727;
  --navy-2:       #0F1E33;
  --navy-3:       #16263D;

  /* Neutrals */
  --bg:           #F7F8FA;
  --bg-alt:       #FFFFFF;
  --bg-soft:      #EEF2F4;
  --line:         #E5E8EC;
  --line-strong:  #D1D6DC;

  /* Text */
  --text:         #0B1727;
  --text-2:       #3D4A5C;
  --text-3:       #6B7585;
  --text-inv:     #FFFFFF;
  --text-inv-2:   #B6C2D2;

  /* Effects */
  --shadow-sm:    0 1px 2px rgba(11,23,39,.06), 0 1px 3px rgba(11,23,39,.04);
  --shadow-md:    0 4px 14px rgba(11,23,39,.06), 0 2px 4px rgba(11,23,39,.04);
  --shadow-lg:    0 18px 50px -12px rgba(11,23,39,.18), 0 6px 12px rgba(11,23,39,.06);
  --shadow-brand: 0 14px 40px -8px rgba(20,184,166,.45);

  /* Geometry */
  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Containers */
  --container: 1240px;
  --container-wide: 1440px;

  /* Motion */
  --ease: cubic-bezier(.2,.7,.3,1);
  --dur:  .35s;

  /* Fonts */
  --font-bn:  "Hind Siliguri", "Inter", system-ui, sans-serif;
  --font-en:  "Inter", "Hind Siliguri", system-ui, sans-serif;
  --font-mono:"JetBrains Mono", ui-monospace, monospace;
}

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-bn);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
button { font: inherit; color: inherit; border: none; background: none; cursor: pointer; }
ul { list-style: none; }
input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--brand); color: #fff; padding: 10px 16px;
  border-radius: 0 0 var(--radius-sm) 0; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ============ LAYOUT ============ */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: var(--container-wide); }
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section-tight { padding: clamp(48px, 6vw, 80px) 0; }
.section-dark { background: var(--navy); color: var(--text-inv); }
.section-navy-2 { background: var(--navy-2); color: var(--text-inv); }
.section-alt { background: var(--bg-soft); }
.section-gradient {
  background: linear-gradient(180deg, var(--bg) 0%, #FFFFFF 100%);
}

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; color: var(--text); }
.section-dark h1, .section-dark h2, .section-dark h3,
.section-navy-2 h1, .section-navy-2 h2, .section-navy-2 h3 { color: var(--text-inv); }
.display {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
}
.h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
.h2 { font-size: clamp(1.7rem, 3.8vw, 2.6rem); }
.h3 { font-size: clamp(1.3rem, 2.2vw, 1.7rem); }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--text-2); line-height: 1.65; }
.section-dark .lead, .section-navy-2 .lead { color: var(--text-inv-2); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-en);
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--brand-dark);
  padding: 6px 14px; border-radius: 999px;
  background: var(--brand-soft);
  border: 1px solid rgba(20,184,166,.25);
}
.section-dark .eyebrow, .section-navy-2 .eyebrow {
  background: rgba(20,184,166,.12);
  border-color: rgba(20,184,166,.3);
  color: #5EEAD4;
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}

.section-head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 64px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .lead { margin-top: 18px; }

/* ============ HEADER ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247,248,250,.7);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(255,255,255,.85);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; height: 72px;
}
.site-header.is-scrolled .header-inner { height: 64px; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 38px; height: 38px; display: block; flex-shrink: 0; transition: transform var(--dur) var(--ease); }
.brand:hover .brand-mark { transform: rotate(-4deg) scale(1.04); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-weight: 800; font-size: 1.18rem; letter-spacing: -0.02em; color: var(--text); }
.brand-light .brand-name { color: var(--text-inv); }
.brand-tag { font-family: var(--font-en); font-size: 0.66rem; color: var(--text-3); letter-spacing: 0.04em; }
.brand-light .brand-tag { color: var(--text-inv-2); }

.main-nav .nav-list { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-block; padding: 9px 14px; border-radius: var(--radius-sm);
  font-size: 0.96rem; color: var(--text-2); font-weight: 500;
  transition: all .2s var(--ease);
}
.nav-link:hover { color: var(--text); background: var(--bg-soft); }
.nav-link.is-active { color: var(--brand-dark); background: var(--brand-soft); }

.header-cta { display: flex; align-items: center; gap: 12px; }
.menu-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: var(--radius-sm); color: var(--text); }
.menu-toggle-icon { width: 22px; height: 22px; position: absolute; transition: opacity .2s var(--ease), transform .2s var(--ease); }
.menu-toggle .close { opacity: 0; transform: scale(.6); }
.menu-toggle[aria-expanded="true"] .menu-toggle-icon:first-child { opacity: 0; transform: scale(.6); }
.menu-toggle[aria-expanded="true"] .close { opacity: 1; transform: scale(1); }

.mobile-nav {
  position: fixed; inset: 0; top: 72px; z-index: 99;
  background: rgba(11,23,39,.5);
  opacity: 0; pointer-events: none; transition: opacity var(--dur) var(--ease);
}
.mobile-nav.is-open { opacity: 1; pointer-events: auto; }
.mobile-nav-inner {
  background: #fff; max-width: 420px; margin-left: auto;
  height: calc(100% - 72px); padding: 24px;
  display: flex; flex-direction: column; gap: 8px;
  transform: translateX(100%); transition: transform var(--dur) var(--ease);
  border-left: 1px solid var(--line); overflow-y: auto;
}
.mobile-nav.is-open .mobile-nav-inner { transform: translateX(0); }
.mobile-nav-list { display: flex; flex-direction: column; gap: 4px; margin-bottom: 20px; }
.mobile-nav-link {
  padding: 14px 16px; border-radius: var(--radius-sm);
  font-size: 1.05rem; font-weight: 500; color: var(--text);
  border: 1px solid transparent;
}
.mobile-nav-link:hover { background: var(--bg-soft); border-color: var(--line); }
.mobile-nav-foot { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; font-size: .82rem; color: var(--text-3); font-family: var(--font-en); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: .96rem; line-height: 1; cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
  white-space: nowrap; text-align: center;
}
.btn svg { width: 16px; height: 16px; }
.btn-sm { padding: 10px 16px; font-size: .9rem; }
.btn-block { display: flex; width: 100%; }
.btn-primary {
  background: var(--brand); color: #fff;
  box-shadow: 0 8px 20px -6px rgba(20,184,166,.5);
}
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: var(--shadow-brand); }
.btn-secondary {
  background: var(--navy); color: #fff;
}
.btn-secondary:hover { background: var(--navy-2); transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--line-strong);
}
.btn-outline:hover { border-color: var(--brand); color: var(--brand-dark); background: rgba(20,184,166,.05); }
.btn-light {
  background: rgba(255,255,255,.1); color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(8px);
}
.btn-light:hover { background: rgba(255,255,255,.18); }
.btn-ghost {
  color: var(--text-2); padding: 8px 12px;
}
.btn-ghost:hover { color: var(--brand-dark); background: var(--bg-soft); }

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: clamp(80px, 12vw, 160px) 0 clamp(60px, 9vw, 110px);
  background:
    radial-gradient(1200px 600px at 90% -10%, rgba(20,184,166,.08), transparent 60%),
    radial-gradient(800px 500px at 0% 100%, rgba(11,23,39,.04), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.hero-badge { margin-bottom: 28px; }
.hero-title {
  font-family: var(--font-bn);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.08; letter-spacing: -0.03em; font-weight: 800;
  margin-bottom: 22px;
}
.hero-title .accent { color: var(--brand-dark); }
.hero-sub { font-size: clamp(1.05rem, 1.5vw, 1.2rem); color: var(--text-2); max-width: 560px; margin-bottom: 36px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }
.hero-meta { display: flex; gap: 32px; flex-wrap: wrap; padding-top: 28px; border-top: 1px solid var(--line); }
.hero-meta-item { display: flex; flex-direction: column; gap: 2px; }
.hero-meta-num { font-family: var(--font-en); font-weight: 800; font-size: 1.7rem; color: var(--text); letter-spacing: -0.02em; }
.hero-meta-label { font-size: .85rem; color: var(--text-3); }

/* Hero visual */
.hero-visual { position: relative; }
.code-card {
  background: var(--navy); border-radius: var(--radius-lg);
  padding: 22px; box-shadow: var(--shadow-lg);
  border: 1px solid var(--navy-3);
  transform: perspective(1200px) rotateY(-3deg) rotateX(2deg);
  transition: transform var(--dur) var(--ease);
}
.code-card:hover { transform: perspective(1200px) rotateY(0deg) rotateX(0deg); }
.code-head { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--navy-3); }
.code-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--navy-3); }
.code-dot.r { background: #FF5F57; }
.code-dot.y { background: #FEBC2E; }
.code-dot.g { background: #28C840; }
.code-file { margin-left: 12px; font-family: var(--font-mono); font-size: .8rem; color: var(--text-inv-2); }

.code-body {
  font-family: var(--font-mono);
  font-size: .85rem;
  line-height: 1.85;
  color: #B6C2D2;
  white-space: pre-wrap;       /* লাইন ভেঙে নিচে যাবে */
  word-wrap: break-word;       /* বড় শব্দ ভাঙবে */
  overflow-wrap: break-word;
}


.code-body .k { color: #5EEAD4; }
.code-body .s { color: #FCD34D; }
.code-body .c { color: #6B7585; font-style: italic; }
.code-body .v { color: #F0ABFC; }

.float-card {
  position: absolute; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 12px;
  font-size: .9rem; font-weight: 600;
}
.float-card .ic {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--brand-soft); color: var(--brand-dark);
  display: flex; align-items: center; justify-content: center;
}
.float-card .ic svg { width: 18px; height: 18px; }
.float-card-1 { top: -16px; right: -10px; animation: float 5s ease-in-out infinite; }
.float-card-2 { bottom: -18px; left: -20px; animation: float 6s ease-in-out infinite .8s; }
.float-card small { display: block; color: var(--text-3); font-weight: 500; font-size: .78rem; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ============ MARQUEE / STATS BAR ============ */
.stats-bar {
  background: var(--navy); color: #fff;
  padding: clamp(40px, 5vw, 64px) 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-item { text-align: left; padding: 12px 0; position: relative; }
.stat-item:not(:last-child)::after {
  content: ""; position: absolute; right: -12px; top: 50%;
  transform: translateY(-50%); width: 1px; height: 50%;
  background: rgba(255,255,255,.12);
}
.stat-icon { width: 36px; height: 36px; color: #5EEAD4; margin-bottom: 14px; }
.stat-value { font-family: var(--font-en); font-weight: 800; font-size: clamp(2rem, 3.5vw, 2.8rem); letter-spacing: -0.02em; color: #fff; }
.stat-label { color: var(--text-inv-2); font-size: .92rem; margin-top: 4px; }

/* ============ CARDS ============ */
.card {
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 28px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  position: relative;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.card-icon {
  width: 52px; height: 52px; border-radius: var(--radius);
  background: var(--brand-soft); color: var(--brand-dark);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; }
.card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.card-desc { color: var(--text-2); font-size: .96rem; }
.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-weight: 600; color: var(--brand-dark); font-size: .92rem; }
.card-link svg { width: 14px; height: 14px; transition: transform .2s var(--ease); }
.card-link:hover svg { transform: translateX(4px); }

/* Service list */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card .card-icon { background: linear-gradient(135deg, var(--brand-soft), rgba(204,251,241,.4)); }
.service-card .features-list {
  margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line);
  display: grid; gap: 8px;
}
.service-card .features-list li {
  display: flex; align-items: center; gap: 8px; font-size: .88rem; color: var(--text-2);
}
.service-card .features-list svg { width: 14px; height: 14px; color: var(--brand-dark); flex-shrink: 0; }

/* ============ ABOUT ============ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 80px); align-items: center; }
.about-content h2 { margin: 18px 0 18px; }
.about-list { margin-top: 28px; display: grid; gap: 18px; }
.about-list-item { display: flex; gap: 14px; }
.about-list-item .check {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--brand-soft); color: var(--brand-dark);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.about-list-item .check svg { width: 16px; height: 16px; }
.about-list-item h4 { font-size: 1.02rem; margin-bottom: 2px; }
.about-list-item p { font-size: .92rem; color: var(--text-2); }

.about-visual {
  position: relative; padding: 28px;
  background: var(--navy); border-radius: var(--radius-xl);
  overflow: hidden; color: #fff;
}
.about-visual::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(400px 300px at 80% 20%, rgba(20,184,166,.3), transparent 60%);
}
.about-visual-content { position: relative; z-index: 1; }
.about-visual .label { font-family: var(--font-en); font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: #5EEAD4; margin-bottom: 14px; }
.about-visual .quote { font-size: 1.4rem; font-weight: 600; line-height: 1.45; margin-bottom: 22px; }
.about-visual .meta { display: flex; gap: 24px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); }
.about-visual .meta-item .num { font-family: var(--font-en); font-weight: 800; font-size: 1.6rem; color: #fff; }
.about-visual .meta-item .lab { font-size: .82rem; color: var(--text-inv-2); }

/* ============ PROJECT GRID ============ */
.project-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.filter-btn {
  padding: 9px 18px; border-radius: 999px;
  background: var(--bg-alt); border: 1px solid var(--line);
  font-size: .9rem; font-weight: 500; color: var(--text-2);
  transition: all .2s var(--ease);
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand-dark); }
.filter-btn.is-active { background: var(--navy); color: #fff; border-color: var(--navy); }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.project-card {
  background: var(--bg-alt); border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--line);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  display: flex; flex-direction: column;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.project-thumb {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--navy-3), var(--navy));
  position: relative; overflow: hidden;
}
.project-thumb::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 28px 28px;
}
.project-thumb::after {
  content: ""; position: absolute; left: 22px; right: 22px; bottom: 0; top: 22px;
  background: rgba(255,255,255,.05); border-radius: 8px;
  border: 1px solid rgba(255,255,255,.1);
}
.project-thumb .thumb-label {
  position: absolute; top: 16px; left: 16px; z-index: 2;
  background: rgba(11,23,39,.7); color: #5EEAD4;
  padding: 5px 11px; border-radius: 999px; font-size: .72rem; font-weight: 600;
  backdrop-filter: blur(8px); font-family: var(--font-en); letter-spacing: .04em;
}
.project-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.project-cat { font-size: .78rem; color: var(--brand-dark); font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px; }
.project-title { font-size: 1.18rem; font-weight: 700; margin-bottom: 8px; }
.project-desc { color: var(--text-2); font-size: .92rem; margin-bottom: 16px; flex: 1; }
.project-tech { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.tech-tag { font-family: var(--font-en); font-size: .72rem; padding: 4px 10px; border-radius: 6px; background: var(--bg-soft); color: var(--text-2); border: 1px solid var(--line); }
.project-foot { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--line); }
.project-year { font-family: var(--font-en); font-size: .85rem; color: var(--text-3); font-weight: 600; }
.project-link { color: var(--brand-dark); font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: 6px; }
.project-link svg { width: 14px; height: 14px; transition: transform .2s var(--ease); }
.project-link:hover svg { transform: translateX(4px); }

/* ============ FEATURED PROJECT ============ */
.featured-project { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 5vw, 70px); align-items: center; }
.featured-visual {
  position: relative; aspect-ratio: 4/3; border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--navy-2), var(--navy));
  border: 1px solid var(--navy-3); overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.featured-visual::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 32px 32px;
}
.featured-visual .window {
  position: absolute; top: 28px; left: 28px; right: 28px; bottom: 28px;
  background: rgba(255,255,255,.05); border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  padding: 18px; backdrop-filter: blur(6px);
}
.window-bar { display: flex; gap: 6px; margin-bottom: 18px; }
.window-bar span { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.2); }
.window-content { display: grid; gap: 10px; }
.window-content .ln { height: 12px; border-radius: 4px; background: rgba(255,255,255,.08); }
.window-content .ln.s { width: 60%; }
.window-content .ln.m { width: 80%; }
.window-content .ln.l { width: 95%; }
.featured-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-en); font-size: .78rem; letter-spacing: .14em;
  text-transform: uppercase; color: #5EEAD4; margin-bottom: 16px;
}
.featured-tag::before { content: ""; width: 24px; height: 1px; background: currentColor; }
.featured-title { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 18px; letter-spacing: -0.02em; }
.featured-desc { color: var(--text-inv-2); margin-bottom: 24px; }
.featured-tech { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.featured-tech .tech-tag { background: rgba(255,255,255,.06); color: #B6C2D2; border-color: rgba(255,255,255,.12); }

/* ============ TECHNOLOGIES ============ */
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.tech-card {
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 20px;
  text-align: center; transition: all var(--dur) var(--ease);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.tech-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand); box-shadow: var(--shadow-md);
  background: #fff;
}
.tech-icon { width: 44px; height: 44px; color: var(--brand-dark); }
.tech-name { font-weight: 700; font-size: .98rem; }
.tech-cat { font-family: var(--font-en); font-size: .72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .08em; }

/* ============ TIMELINE ============ */
.timeline { position: relative; max-width: 920px; margin: 0 auto; padding-left: 36px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(180deg, var(--brand), var(--line) 80%);
}
.timeline-item { position: relative; padding: 0 0 36px 36px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -36px; top: 6px;
  width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 4px solid var(--brand);
  box-shadow: 0 0 0 4px var(--brand-soft);
}
.timeline-year { font-family: var(--font-en); font-weight: 800; font-size: 1.1rem; color: var(--brand-dark); margin-bottom: 4px; }
.timeline-title { font-weight: 700; font-size: 1.12rem; margin-bottom: 4px; }
.timeline-desc { color: var(--text-2); font-size: .94rem; }

/* ============ PROCESS ============ */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.process-card {
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 28px;
  position: relative; transition: all var(--dur) var(--ease);
}
.process-card:hover { border-color: var(--brand); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.process-num {
  font-family: var(--font-en); font-size: 2.4rem; font-weight: 800;
  color: var(--brand); line-height: 1; margin-bottom: 12px; opacity: .9;
}
.process-card h3 { font-size: 1.12rem; margin-bottom: 6px; }
.process-card p { color: var(--text-2); font-size: .92rem; }

/* ============ WHY ============ */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg); padding: 26px;
  transition: all var(--dur) var(--ease);
}
.why-card:hover { background: rgba(255,255,255,.06); border-color: rgba(20,184,166,.4); transform: translateY(-3px); }
.why-card .card-icon { background: rgba(20,184,166,.15); color: #5EEAD4; }
.why-card .card-title { color: #fff; }
.why-card .card-desc { color: var(--text-inv-2); }

/* ============ TESTIMONIALS ============ */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card {
  background: var(--bg-alt); border-radius: var(--radius-lg); padding: 28px;
  border: 1px solid var(--line); display: flex; flex-direction: column; gap: 18px;
}
.testimonial-stars { display: flex; gap: 2px; color: #FEBC2E; }
.testimonial-stars svg { width: 18px; height: 18px; }
.testimonial-text { color: var(--text-2); font-size: 1rem; line-height: 1.7; flex: 1; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-family: var(--font-en);
}
.testimonial-name { font-weight: 700; font-size: .96rem; }
.testimonial-role { font-size: .82rem; color: var(--text-3); }

/* ============ TEAM ============ */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card {
  background: var(--bg-alt); border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--line);
  transition: all var(--dur) var(--ease);
}
.team-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.team-photo {
  aspect-ratio: 1; background: linear-gradient(135deg, var(--navy-2), var(--navy-3));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-en); font-size: 2.2rem; font-weight: 800; color: #5EEAD4;
  position: relative;
}
.team-photo::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 24px 24px;
}
.team-info { padding: 20px; }
.team-name { font-weight: 700; font-size: 1.05rem; }
.team-position { color: var(--brand-dark); font-size: .88rem; font-weight: 600; margin: 2px 0 10px; }
.team-bio { font-size: .88rem; color: var(--text-2); margin-bottom: 14px; }
.team-social { display: flex; gap: 8px; }
.team-social a { width: 32px; height: 32px; border-radius: 8px; background: var(--bg-soft); display: flex; align-items: center; justify-content: center; color: var(--text-2); transition: all .2s var(--ease); }
.team-social a:hover { background: var(--brand); color: #fff; }
.team-social svg { width: 15px; height: 15px; }

/* ============ FAQ ============ */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item {
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.faq-item.is-open { border-color: var(--brand); box-shadow: var(--shadow-md); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 22px; text-align: left; font-weight: 600; font-size: 1rem; color: var(--text);
}
.faq-q-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--bg-soft); color: var(--brand-dark); display: flex; align-items: center; justify-content: center; transition: transform var(--dur) var(--ease); }
.faq-q-icon svg { width: 16px; height: 16px; }
.faq-item.is-open .faq-q-icon { transform: rotate(45deg); background: var(--brand); color: #fff; }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height var(--dur) var(--ease);
}
.faq-a-inner { padding: 0 22px 22px; color: var(--text-2); font-size: .96rem; line-height: 1.7; }

/* ============ CTA SECTION ============ */
.cta-section {
  position: relative; padding: clamp(60px, 9vw, 100px) 0;
  background: var(--navy); color: #fff;
  overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(800px 400px at 80% 50%, rgba(20,184,166,.18), transparent 60%),
    radial-gradient(600px 300px at 10% 80%, rgba(20,184,166,.1), transparent 60%);
}
.cta-inner { position: relative; text-align: center; max-width: 760px; margin: 0 auto; }
.cta-inner h2 { color: #fff; margin-bottom: 18px; }
.cta-inner p { color: var(--text-inv-2); font-size: 1.1rem; margin-bottom: 32px; }
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============ FORMS ============ */
.form-card {
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: clamp(28px, 4vw, 44px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-weight: 600; font-size: .9rem;
  margin-bottom: 6px; color: var(--text);
}
.form-control {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line);
  border-radius: var(--radius-sm); background: #fff;
  font-size: .96rem; color: var(--text);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.form-control:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(20,184,166,.12);
}
.form-control::placeholder { color: var(--text-3); }
textarea.form-control { min-height: 130px; resize: vertical; }
select.form-control { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7585' stroke-width='2'%3e%3cpath d='M6 9l6 6 6-6'/%3e%3c/svg%3e"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }

.form-alert { padding: 14px 18px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: .92rem; display: flex; align-items: center; gap: 10px; }
.form-alert.success { background: var(--brand-soft); color: var(--brand-darker); border: 1px solid rgba(20,184,166,.3); }
.form-alert.error { background: #FEE2E2; color: #B91C1C; border: 1px solid rgba(220,38,38,.2); }
.form-alert svg { width: 20px; height: 20px; flex-shrink: 0; }
.form-help { font-size: .82rem; color: var(--text-3); margin-top: 6px; }

/* ============ CONTACT ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(32px, 5vw, 60px); align-items: start; }
.contact-info-list { display: grid; gap: 16px; margin-top: 24px; }
.contact-info-item {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px; background: var(--bg-alt); border-radius: var(--radius);
  border: 1px solid var(--line);
}
.contact-info-item .ic { width: 38px; height: 38px; flex-shrink: 0; border-radius: 10px; background: var(--brand-soft); color: var(--brand-dark); display: flex; align-items: center; justify-content: center; }
.contact-info-item .ic svg { width: 18px; height: 18px; }
.contact-info-item .lbl { font-size: .78rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .08em; }
.contact-info-item .val { font-weight: 600; font-size: .96rem; word-break: break-word; }

/* ============ BLOG ============ */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.blog-card {
  display: flex; flex-direction: column; background: var(--bg-alt);
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line); transition: all var(--dur) var(--ease);
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.blog-thumb { aspect-ratio: 16/9; background: linear-gradient(135deg, var(--navy-2), var(--navy-3)); position: relative; }
.blog-thumb::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 24px 24px; }
.blog-cat-tag { position: absolute; top: 14px; left: 14px; z-index: 2; background: rgba(11,23,39,.7); color: #5EEAD4; padding: 5px 11px; border-radius: 999px; font-size: .72rem; font-weight: 600; backdrop-filter: blur(8px); }
.blog-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.blog-meta { display: flex; gap: 12px; align-items: center; font-size: .82rem; color: var(--text-3); margin-bottom: 10px; font-family: var(--font-en); }
.blog-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; line-height: 1.35; }
.blog-excerpt { color: var(--text-2); font-size: .92rem; flex: 1; margin-bottom: 16px; }
.blog-link { display: inline-flex; align-items: center; gap: 6px; color: var(--brand-dark); font-weight: 600; font-size: .9rem; }
.blog-link svg { width: 14px; height: 14px; transition: transform .2s var(--ease); }
.blog-link:hover svg { transform: translateX(4px); }

/* ============ EMPTY STATE ============ */
.empty-state {
  text-align: center; padding: 60px 24px;
  border: 2px dashed var(--line); border-radius: var(--radius-lg);
  background: var(--bg-alt);
}
.empty-state .ic { width: 56px; height: 56px; margin: 0 auto 16px; color: var(--text-3); }
.empty-state h3 { font-size: 1.1rem; margin-bottom: 6px; }
.empty-state p { color: var(--text-2); font-size: .92rem; }

/* ============ FOOTER ============ */
.site-footer { background: var(--navy); color: var(--text-inv-2); padding-top: clamp(60px, 8vw, 90px); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1.4fr; gap: 40px;
  padding-bottom: 50px;
}
.footer-desc { color: var(--text-inv-2); font-size: .92rem; margin: 18px 0 22px; max-width: 380px; line-height: 1.7; }
.footer-social { display: flex; gap: 10px; }
.social-link { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,.06); display: flex; align-items: center; justify-content: center; color: var(--text-inv-2); transition: all .2s var(--ease); }
.social-link:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }
.social-link svg { width: 17px; height: 17px; }
.footer-title { font-size: .82rem; text-transform: uppercase; letter-spacing: .14em; color: #fff; margin-bottom: 16px; font-weight: 700; font-family: var(--font-en); }
.footer-col ul { display: grid; gap: 10px; }
.footer-col a, .footer-contact li a, .footer-contact .contact-line { display: flex; align-items: center; gap: 8px; color: var(--text-inv-2); font-size: .92rem; transition: color .2s var(--ease); }
.footer-col a:hover, .footer-contact li a:hover { color: #5EEAD4; }
.footer-contact li svg, .footer-contact .contact-line svg { width: 16px; height: 16px; color: #5EEAD4; flex-shrink: 0; }
.footer-contact li { margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; }
.footer-bottom p { font-size: .85rem; color: var(--text-inv-2); }
.footer-built { font-family: var(--font-en); font-size: .8rem; color: var(--text-inv-2); }
.footer-built .heart { color: var(--brand); }

/* ============ BACK TO TOP ============ */
.back-to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 50;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none;
  transition: all var(--dur) var(--ease);
}
.back-to-top svg { width: 20px; height: 20px; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: var(--brand); transform: translateY(-3px); }

/* ============ 404 ============ */
.not-found { padding: clamp(80px, 14vw, 160px) 0; text-align: center; }
.not-found-code { font-family: var(--font-en); font-size: clamp(6rem, 18vw, 12rem); font-weight: 800; line-height: 1; letter-spacing: -0.04em; background: linear-gradient(135deg, var(--brand), var(--brand-dark)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.not-found h1 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 14px; }
.not-found p { color: var(--text-2); max-width: 460px; margin: 0 auto 32px; }

/* ============ ANIMATIONS ============ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: .1s; }
.reveal.delay-2 { transition-delay: .2s; }
.reveal.delay-3 { transition-delay: .3s; }
.reveal.delay-4 { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .stat-item:nth-child(2)::after { display: none; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-contact { grid-column: span 3; }
  .services-grid, .projects-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(4, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 880px) {
  .code-card {
    transform: none !important;
    padding: 18px;
    margin: 0 -8px; /* স্ক্রিনের সাথে মানানসই করতে */
  }
  
  .hero-visual {
    max-width: 100%;
    width: 100%;
  }
}
  .float-card-1, .float-card-2 { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-contact { grid-column: span 2; }
}

@media (max-width: 680px) {
  .container { padding: 0 18px; }
  .services-grid, .projects-grid, .blog-grid, .process-grid, .why-grid, .team-grid, .tech-grid {
    grid-template-columns: 1fr;
  }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item::after { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-contact { grid-column: span 1; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .header-cta .btn-primary span { display: none; }
  .header-cta .btn-primary { padding: 10px 14px; }
  .hero-cta .btn { flex: 1; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 24px; }
  .timeline-item { padding-left: 24px; }
  .timeline-item::before { left: -24px; }
  .about-visual .meta { flex-direction: column; gap: 14px; }
  .mobile-nav-inner { padding: 18px; }
}

@media (max-width: 400px) {
  .stats-grid { grid-template-columns: 1fr; }
  .brand-tag { display: none; }
}

/* Large screen optimization */
@media (min-width: 1440px) {
  .container { max-width: 1280px; }
}
@media (min-width: 1920px) {
  body { font-size: 17px; }
  .container { max-width: 1320px; }
}
/* ===== MOBILE RESPONSIVE FIXES ===== */

/* ১. জুম আউট হওয়া রোধ করতে বেসিক রুল */
html, body {
  max-width: 100% !important;
  overflow-x: hidden !important;
  -webkit-text-size-adjust: 100%;
}

/* ২. কোড ব্লক যাতে স্ক্রিন পার না করে */
.code-card {
  box-sizing: border-box;
  max-width: 100%;
}

.code-body {
  white-space: pre-wrap !important;       /* লাইন ভেঙে নিচে যাবে */
  word-wrap: break-word !important;       /* বড় শব্দ ভাঙবে */
  overflow-wrap: break-word !important;
  word-break: break-all !important;       /* জোর করে ভাঙতে বাধ্য করবে */
  font-size: 0.75rem !important;          /* মোবাইলে সাইজ ছোট করা হলো */
}

/* ৩. মোবাইলে ৩D এফেক্ট বন্ধ করা এবং ভাসমান কার্ড লুকানো */
@media (max-width: 880px) {
  .code-card {
    transform: none !important;
    padding: 18px;
    margin: 0 auto;
    width: 100%;
  }

  .hero-visual {
    max-width: 100%;
    width: 100%;
    margin: 0;
  }

  /* মোবাইলে ফ্লোটিং কার্ডগুলো স্ক্রিনের বাইরে চলে যাওয়া বন্ধ করতে লুকিয়ে দেওয়া হলো */
  .float-card-1, .float-card-2 {
    display: none !important;
  }

  .hero-title {
    font-size: 2.2rem !important;
  }
}

/* ৪. ছোট মোবাইল স্ক্রিনের জন্য প্যাডিং ঠিক করা */
@media (max-width: 480px) {
  .container {
    padding: 0 16px !important;
  }
  
  .code-body {
    font-size: 0.7rem !important;
  }
  
  .hero-meta {
    gap: 18px !important;
  }
}