/* =========================================================
   FABTECH Bangladesh — site styles
   Brand: blue #027DC4 · graphite #3F4448 · ink #101418
   ========================================================= */

:root {
  --blue: #0670b3;          /* UI blue — AA contrast on white, sand and as a button fill */
  --blue-dark: #04568a;
  --blue-brand: #027dc4;    /* logo blue — decorative use only */
  --blue-on-dark: #6ec1f0;  /* blue for text on the ink background */
  --blue-light: #e8f3fb;
  --ink: #101418;
  --graphite: #3f4448;
  --grey: #6d7378;
  --grey-light: #eef1f3;
  --line: #dfe4e8;
  --white: #ffffff;
  --sand: #f6f8f9;

  --display: "Oswald", "Arial Narrow", sans-serif;
  --body: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --wrap: 1200px;
  --radius: 4px;
  --shadow: 0 2px 6px rgba(16, 20, 24, .06), 0 12px 32px rgba(16, 20, 24, .07);
  --shadow-lg: 0 4px 12px rgba(16, 20, 24, .08), 0 24px 60px rgba(16, 20, 24, .12);
  --header-h: 84px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 20px); }

body {
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--graphite);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--blue-dark); }

h1, h2, h3, h4, h5 {
  font-family: var(--display);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: .01em;
}

h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); font-weight: 700; text-transform: uppercase; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 700; text-transform: uppercase; }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 860px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--display); font-weight: 500; font-size: .98rem;
  letter-spacing: .06em; text-transform: uppercase;
  padding: 14px 30px; border: 2px solid transparent; border-radius: var(--radius);
  cursor: pointer; transition: all .22s ease; white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: #fff; transform: translateY(-2px); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.65); }
.btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn .arw { transition: transform .22s ease; }
.btn:hover .arw { transform: translateX(4px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 900;
  background: rgba(255,255,255,.97);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand img { height: 40px; width: auto; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  font-family: var(--display); font-weight: 500; font-size: .95rem;
  letter-spacing: .05em; text-transform: uppercase;
  color: var(--ink); padding: 10px 12px; border-radius: var(--radius);
  position: relative; white-space: nowrap;
}
.nav a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px;
  height: 2px; background: var(--blue); transform: scaleX(0); transform-origin: left;
  transition: transform .22s ease;
}
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.nav a.active { color: var(--blue); }
.header-cta { margin-left: 8px; padding: 11px 22px; font-size: .88rem; }

.burger {
  display: none; background: none; border: 0; cursor: pointer;
  width: 44px; height: 44px; align-items: center; justify-content: center;
}
.burger span {
  display: block; width: 24px; height: 2px; background: var(--ink); position: relative;
  transition: background .2s ease;
}
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 24px; height: 2px; background: var(--ink);
  transition: transform .25s ease;
}
.burger span::before { top: -7px; }
.burger span::after { top: 7px; }
.burger.open span { background: transparent; }
.burger.open span::before { transform: translateY(7px) rotate(45deg); }
.burger.open span::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background-color: var(--ink);
  background-size: cover; background-position: center;
  background-repeat: no-repeat;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(9,14,20,.93) 0%, rgba(9,14,20,.78) 45%, rgba(2,125,196,.42) 100%);
}
.hero .wrap { position: relative; z-index: 2; }
.hero-home { padding: clamp(90px, 13vw, 160px) 0 clamp(80px, 11vw, 130px); }
.hero-home h1 { color: #fff; max-width: 16ch; }
.hero-home h1 em { font-style: normal; color: #6ec1f0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--display); font-weight: 500; letter-spacing: .22em;
  text-transform: uppercase; font-size: .8rem; color: #6ec1f0; margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--blue); }
.hero-lead { font-size: clamp(1rem, 1.5vw, 1.14rem); color: rgba(255,255,255,.86); max-width: 62ch; margin-top: 22px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.tagline {
  margin-top: 30px; font-family: var(--display); font-style: italic; font-weight: 300;
  font-size: 1.25rem; color: rgba(255,255,255,.72); letter-spacing: .02em;
}

/* Page banner (interior pages) */
.page-hero { padding: clamp(60px, 9vw, 110px) 0 clamp(52px, 8vw, 90px); }
.page-hero h1 { color: #fff; }
.page-hero p { color: rgba(255,255,255,.85); max-width: 66ch; margin-top: 16px; }
.crumbs { font-size: .85rem; color: rgba(255,255,255,.6); margin-bottom: 14px; letter-spacing: .04em; }
.crumbs a { color: rgba(255,255,255,.78); }
.crumbs a:hover { color: #fff; }

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 8vw, 104px) 0; }
.section-tight { padding: clamp(48px, 6vw, 72px) 0; }
.section-alt { background: var(--sand); }
.section-dark { background: var(--ink); color: rgba(255,255,255,.78); }
.section-dark h2, .section-dark h3 { color: #fff; }

.section-head { max-width: 760px; margin-bottom: clamp(34px, 5vw, 56px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .eyebrow { color: var(--blue); }
.section-head p { margin-top: 14px; color: var(--grey); font-size: 1.03rem; }
.section-dark .section-head p { color: rgba(255,255,255,.7); }

/* ---------- Stat band ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.14); }
.stat { background: var(--ink); padding: 34px 26px; }
.stat .num { font-family: var(--display); font-weight: 700; font-size: clamp(1.9rem, 3.2vw, 2.7rem); color: #fff; line-height: 1.05; }
.stat .num span { color: var(--blue-on-dark); font-size: .52em; font-weight: 500; letter-spacing: .04em; white-space: nowrap; }
.stat .lbl { margin-top: 10px; font-size: .86rem; color: rgba(255,255,255,.62); letter-spacing: .02em; }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 26px; }
.grid-start { align-items: start; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card .ico {
  width: 46px; height: 46px; border-radius: var(--radius); background: var(--blue-light);
  display: grid; place-items: center; margin-bottom: 18px; color: var(--blue);
}
.card .ico svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 1.7; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--grey); font-size: .95rem; }
.card ul { list-style: none; margin-top: 12px; }
.card ul li {
  position: relative; padding-left: 20px; font-size: .93rem; color: var(--grey); margin-bottom: 6px;
}
.card ul li::before {
  content: ""; position: absolute; left: 0; top: .62em; width: 7px; height: 7px;
  background: var(--blue); border-radius: 1px;
}

/* Service block (image + list) */
.svc { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 60px); align-items: center; }
.svc + .svc { margin-top: clamp(56px, 7vw, 88px); }
.svc:nth-child(even) .svc-media { order: -1; }
.svc-media { display: grid; gap: 12px; }
.svc-media img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.svc-media.two { grid-template-columns: 1fr 1fr; }
.svc-media.two img:first-child { grid-column: 1 / -1; aspect-ratio: 16/9; }
.svc-media.two img:not(:first-child) { aspect-ratio: 4/3; }
.svc-media.one img { aspect-ratio: 4/3; }
.svc-body h2 { margin-bottom: 8px; }
.svc-body .kicker {
  font-family: var(--display); letter-spacing: .18em; text-transform: uppercase;
  font-size: .78rem; color: var(--blue); margin-bottom: 10px; display: block;
}
.svc-list { list-style: none; margin-top: 18px; columns: 2; column-gap: 28px; }
.svc-list li {
  position: relative; padding-left: 22px; margin-bottom: 9px; font-size: .95rem;
  break-inside: avoid; color: var(--graphite);
}
.svc-list li::before {
  content: ""; position: absolute; left: 0; top: .58em; width: 8px; height: 8px;
  background: var(--blue); transform: rotate(45deg);
}
.svc-sub { font-family: var(--display); font-size: 1.02rem; color: var(--ink); margin-top: 20px; text-transform: uppercase; letter-spacing: .04em; }

/* ---------- Project cards ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.filters button {
  font-family: var(--display); font-size: .88rem; letter-spacing: .05em; text-transform: uppercase;
  padding: 9px 18px; border: 1px solid var(--line); background: #fff; color: var(--graphite);
  border-radius: 100px; cursor: pointer; transition: all .2s ease;
}
.filters button:hover { border-color: var(--blue); color: var(--blue); }
.filters button.active { background: var(--ink); border-color: var(--ink); color: #fff; }

.proj {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff;
  display: flex; flex-direction: column; transition: transform .25s ease, box-shadow .25s ease;
}
.proj:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.proj-cover { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--grey-light); }
.proj-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.proj:hover .proj-cover img { transform: scale(1.05); }
.proj-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-family: var(--display); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  background: rgba(16,20,24,.82); color: #fff; padding: 5px 11px; border-radius: 100px;
}
.proj-tag.live { background: var(--blue); }
.proj-count {
  position: absolute; bottom: 12px; right: 12px; z-index: 2;
  font-size: .74rem; letter-spacing: .04em; background: rgba(16,20,24,.75); color: #fff;
  padding: 4px 10px; border-radius: 100px; display: flex; align-items: center; gap: 6px;
}
.proj-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.proj-body h3 { font-size: 1.08rem; line-height: 1.28; margin-bottom: 10px; }
.proj-meta { font-size: .88rem; color: var(--grey); margin-top: auto; }
.proj-meta strong { color: var(--graphite); font-weight: 500; }
.proj-meta .loc { display: block; margin-top: 3px; font-size: .84rem; }
.proj-open {
  margin-top: 16px; font-family: var(--display); font-size: .84rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--blue); background: none; border: 0; padding: 0;
  cursor: pointer; text-align: left; display: inline-flex; align-items: center; gap: 7px;
}
.proj-open:hover { color: var(--blue-dark); }

/* ---------- Clients ---------- */
.clients { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.clients div {
  background: #fff; padding: 24px 20px; text-align: center; font-size: .92rem;
  color: var(--graphite); display: grid; place-items: center; min-height: 92px;
}

/* ---------- Specs / lists ---------- */
.spec-list { list-style: none; }
.spec-list li {
  display: flex; justify-content: space-between; gap: 20px; align-items: baseline;
  padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: .95rem;
}
.spec-list li:last-child { border-bottom: 0; }
.spec-list .v { font-family: var(--display); color: var(--ink); white-space: nowrap; letter-spacing: .03em; }

.check-list { list-style: none; }
.check-list li { position: relative; padding-left: 34px; margin-bottom: 16px; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 2px; width: 20px; height: 20px;
  border-radius: 50%; background: var(--blue-light);
}
.check-list li::after {
  content: ""; position: absolute; left: 6.5px; top: 7px; width: 7px; height: 3.5px;
  border-left: 2px solid var(--blue); border-bottom: 2px solid var(--blue);
  transform: rotate(-45deg);
}
.section-dark .check-list li::before { background: rgba(2,125,196,.25); }

.pill-row { display: flex; flex-wrap: wrap; gap: 9px; }
.pill {
  font-family: var(--display); font-size: .84rem; letter-spacing: .06em; text-transform: uppercase;
  padding: 7px 15px; border: 1px solid var(--line); border-radius: 100px; color: var(--graphite);
  background: #fff;
}
.section-dark .pill { border-color: rgba(255,255,255,.2); color: rgba(255,255,255,.85); background: transparent; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 60px); }
.contact-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: #fff; }
.contact-card + .contact-card { margin-top: 20px; }
.contact-card h3 { margin-bottom: 4px; }
.contact-card .role { font-size: .88rem; color: var(--blue); margin-bottom: 14px; }
.contact-card dl { display: grid; grid-template-columns: 22px 1fr; gap: 10px 12px; align-items: start; font-size: .95rem; }
.contact-card dt { color: var(--blue); padding-top: 2px; }
.contact-card dt svg { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 1.7; }
.contact-card dd { color: var(--graphite); word-break: break-word; }

.form-grid { display: grid; gap: 16px; }
.field label {
  display: block; font-family: var(--display); font-size: .84rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--ink); margin-bottom: 7px;
}
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border: 1px solid var(--line); border-radius: var(--radius);
  font-family: var(--body); font-size: .96rem; color: var(--ink); background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(2,125,196,.12);
}
.field textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: .85rem; color: var(--grey); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--blue); color: #fff; }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding-top: 54px; padding-bottom: 54px; }
.cta-band h2 { color: #fff; margin-bottom: 6px; }
.cta-band p { color: rgba(255,255,255,.95); }
.cta-band .btn-ghost:hover { color: var(--blue); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.62); padding-top: 66px; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 48px; }
.site-footer h3 {
  color: #fff; font-size: .92rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 18px;
}
.site-footer a { color: rgba(255,255,255,.62); }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 9px; }
.footer-logo { height: 34px; width: auto; margin-bottom: 18px; filter: brightness(0) invert(1); opacity: .95; }
.footer-tag { font-family: var(--display); font-style: italic; color: rgba(255,255,255,.5); margin-top: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; display: flex;
  justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .85rem; color: rgba(255,255,255,.45);
}

/* ---------- Utilities ---------- */
.vh {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}

/* ---------- Lightbox ---------- */
.lb {
  position: fixed; inset: 0; z-index: 1000; background: rgba(9,12,16,.94);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.lb.open { display: flex; }
.lb img { max-width: min(1200px, 94vw); max-height: 82vh; object-fit: contain; border-radius: var(--radius); }
.lb-cap {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.8); font-size: .9rem; text-align: center; max-width: 80vw; padding: 0 16px;
}
.lb-btn {
  position: absolute; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  color: #fff; width: 48px; height: 48px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center; font-size: 1.3rem; transition: background .2s ease;
}
.lb-btn:hover { background: rgba(255,255,255,.22); }
.lb-btn:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.lb-close { top: 22px; right: 22px; }
.lb-prev { left: 22px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 22px; top: 50%; transform: translateY(-50%); }

/* ---------- Reveal ---------- */
/* Only hide when JS is running — without JS every .rv stays visible. */
.js .rv { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .rv { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}
@media print {
  .js .rv { opacity: 1 !important; transform: none !important; }
  .site-header, .cta-band, .lb { display: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1040px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 900px) {
  :root { --header-h: 70px; }
  .burger { display: flex; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; background: #fff;
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 24px 26px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    transform: translateY(-130%); transition: transform .3s ease, visibility .3s ease;
    max-height: calc(100vh - var(--header-h)); overflow-y: auto; visibility: hidden;
  }
  .nav.open { transform: translateY(0); visibility: visible; }
  .nav a { padding: 14px 4px; font-size: 1rem; border-bottom: 1px solid var(--grey-light); }
  .nav a::after { display: none; }
  .header-cta { margin: 16px 0 0; justify-content: center; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .svc { grid-template-columns: 1fr; }
  .svc:nth-child(even) .svc-media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .svc-list { columns: 1; }
}

@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .lb-prev { left: 8px; } .lb-next { right: 8px; }
  .btn { padding: 13px 24px; font-size: .92rem; }
}