/* =========================================================
   SAIISHA INFRASTRUCTURE — Construction Theme
   ========================================================= */
:root {
  --red: #b3262b;
  --red-dark: #8e1a1f;
  --steel: #14171c;
  --steel-2: #1d2128;
  --steel-3: #2a2f38;
  --concrete: #f3f2ef;
  --concrete-2: #e6e4df;
  --text: #2b2f36;
  --muted: #6b707a;
  --white: #ffffff;
  --yellow: #f2b51c;
  --radius: 4px;
  --shadow: 0 20px 50px -20px rgba(20, 23, 28, .35);
  --ease: cubic-bezier(.22, .9, .32, 1);
  --head: "Barlow Condensed", "Oswald", sans-serif;
  --body: "Barlow", "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .3s; }
ul { list-style: none; }
h1, h2, h3, h4, h5 { font-family: var(--head); font-weight: 700; line-height: 1.1; color: var(--steel); text-transform: uppercase; letter-spacing: .5px; }
h1 { font-size: clamp(42px, 6.5vw, 86px); }
h2 { font-size: clamp(32px, 4.4vw, 54px); }
h3 { font-size: clamp(22px, 2.2vw, 28px); }
p + p { margin-top: 14px; }

.container { width: min(1240px, 100% - 32px); margin-inline: auto; }
.section { padding: 110px 0; position: relative; }
main, .section, .footer, .cta { overflow-x: clip; }
.section.dark { background: var(--steel); color: #c9ccd2; }
.section.dark h2, .section.dark h3 { color: var(--white); }
.section.concrete { background: var(--concrete); }

/* blueprint grid texture */
.blueprint {
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
}
.concrete.grid-light {
  background-image:
    linear-gradient(rgba(20,23,28,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,23,28,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ---------- Eyebrow / headings ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--head); font-weight: 600; font-size: 15px;
  letter-spacing: 3px; text-transform: uppercase; color: var(--red);
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 38px; height: 3px; background: var(--red); }
.section-head { max-width: 720px; margin-bottom: 60px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow::after { content: ""; width: 38px; height: 3px; background: var(--red); }
.section-head p { margin-top: 18px; color: var(--muted); }
.dark .section-head p { color: #a3a8b1; }
h2 .hl, h1 .hl { color: var(--red); }

/* ---------- Buttons ---------- */
.btn {
  position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 34px; font-family: var(--head); font-size: 17px; font-weight: 600;
  letter-spacing: 1.5px; text-transform: uppercase; border: 2px solid var(--red);
  background: var(--red); color: var(--white); cursor: pointer; z-index: 1;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: color .4s var(--ease), border-color .4s;
}
.btn::before {
  content: ""; position: absolute; inset: 0; background: var(--steel); z-index: -1;
  transform: scaleX(0); transform-origin: right; transition: transform .5s var(--ease);
}
.btn:hover::before { transform: scaleX(1); transform-origin: left; }
.btn:hover { border-color: var(--steel); }
.btn i { transition: transform .4s var(--ease); }
.btn:hover i { transform: translateX(5px); }
.btn.outline { background: transparent; border-color: rgba(255,255,255,.6); }
.btn.outline::before { background: var(--red); }
.btn.outline:hover { border-color: var(--red); }
.dark .btn::before, .hero .btn::before, .cta .btn::before { background: var(--white); }
.dark .btn:hover, .hero .btn:hover:not(.outline), .cta .btn:hover { color: var(--steel); border-color: var(--white); }
.hero .btn.outline::before { background: var(--red); }

/* ---------- Preloader ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 9999; background: var(--steel);
  display: grid; place-items: center; transition: opacity .6s, visibility .6s;
}
.preloader.done { opacity: 0; visibility: hidden; }
.loader-build { display: flex; align-items: flex-end; gap: 6px; height: 70px; }
.loader-build span { width: 14px; background: var(--red); animation: build 1.1s var(--ease) infinite alternate; }
.loader-build span:nth-child(1) { animation-delay: 0s; }
.loader-build span:nth-child(2) { animation-delay: .12s; }
.loader-build span:nth-child(3) { animation-delay: .24s; }
.loader-build span:nth-child(4) { animation-delay: .36s; }
.loader-build span:nth-child(5) { animation-delay: .48s; }
.preloader p { margin-top: 20px; font-family: var(--head); color: #fff; letter-spacing: 6px; font-size: 14px; text-align: center; }
@keyframes build { from { height: 8px; } to { height: 70px; } }

/* ---------- Top bar ---------- */
.topbar { background: var(--steel); color: #b9bdc5; font-size: 14px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; gap: 20px; flex-wrap: wrap; }
.topbar a:hover { color: var(--white); }
.topbar .info { display: flex; gap: 28px; flex-wrap: wrap; }
.topbar i { color: var(--red); margin-right: 8px; }
.topbar .tagline { font-family: var(--head); letter-spacing: 2px; text-transform: uppercase; color: var(--yellow); }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 900; background: #fff;
  border-bottom: 1px solid var(--concrete-2);
  transition: box-shadow .4s, padding .4s;
}
.header.scrolled { box-shadow: 0 10px 30px -15px rgba(0,0,0,.25); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 92px; transition: height .4s var(--ease); }
.header.scrolled .container { height: 74px; }
.logo img { height: 46px; width: auto; transition: height .4s; }
.header.scrolled .logo img { height: 40px; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  position: relative; padding: 10px 16px; font-family: var(--head); font-weight: 600;
  font-size: 18px; letter-spacing: 1px; text-transform: uppercase; color: var(--steel);
}
.nav a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 3px;
  background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.nav a:hover, .nav a.active { color: var(--red); }
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.header .btn { padding: 13px 26px; font-size: 16px; }
.burger { display: none; width: 46px; height: 46px; background: var(--red); border: 0; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 12px; right: 12px; height: 2px; background: #fff; transition: .4s var(--ease); }
.burger span:nth-child(1) { top: 15px; } .burger span:nth-child(2) { top: 22px; } .burger span:nth-child(3) { top: 29px; }
.burger.open span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: calc(100vh - 134px); min-height: calc(100svh - 134px); display: flex; align-items: center; overflow: hidden; background: var(--steel); }
.hero-slides { position: absolute; inset: 0; }
.hero-slides .slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transform: scale(1.12); transition: opacity 1.4s ease, transform 7s linear; }
.hero-slides .slide.active { opacity: 1; transform: scale(1); }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(14,16,20,.94) 0%, rgba(14,16,20,.78) 45%, rgba(14,16,20,.25) 100%); }
.hero .container { position: relative; z-index: 2; padding: 90px 0 130px; }
.hero-content { max-width: 860px; }
.hero h1 { color: var(--white); margin-bottom: 26px; font-size: clamp(38px, 5.6vw, 78px); }
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line span { display: inline-block; transform: translateY(110%); animation: rise 1s var(--ease) forwards; }
.hero h1 .line:nth-child(2) span { animation-delay: .15s; }
.hero h1 .line:nth-child(3) span { animation-delay: .3s; }
.hero p { color: #c9ccd2; font-size: 19px; max-width: 620px; margin-bottom: 40px; opacity: 0; animation: fadeUp 1s .6s var(--ease) forwards; }
.hero .actions { display: flex; gap: 16px; flex-wrap: wrap; opacity: 0; animation: fadeUp 1s .8s var(--ease) forwards; }
.hero .eyebrow { opacity: 0; animation: fadeUp .8s .1s var(--ease) forwards; }
@keyframes rise { to { transform: translateY(0); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }

.hero-stats {
  position: absolute; right: 0; bottom: 0; z-index: 3; display: flex; background: var(--red);
  clip-path: polygon(40px 0, 100% 0, 100% 100%, 0 100%);
}
.hero-stats div { padding: 26px 44px; color: #fff; border-left: 1px solid rgba(255,255,255,.2); }
.hero-stats div:first-child { border-left: 0; padding-left: 80px; }
.hero-stats strong { display: block; font-family: var(--head); font-size: 42px; line-height: 1; }
.hero-stats span { font-size: 14px; letter-spacing: 1px; text-transform: uppercase; opacity: .85; }
.hero-dots { position: absolute; left: 50%; bottom: 40px; transform: translateX(-50%); z-index: 3; display: flex; gap: 10px; }
.hero-dots button { width: 34px; height: 4px; border: 0; background: rgba(255,255,255,.35); cursor: pointer; transition: background .3s, width .3s; }
.hero-dots button.active { background: var(--red); width: 54px; }

/* hazard stripe */
.hazard { height: 10px; background: repeating-linear-gradient(-45deg, var(--yellow) 0 18px, var(--steel) 18px 36px); background-size: 200% 100%; animation: hazardMove 18s linear infinite; }
@keyframes hazardMove { to { background-position: 400px 0; } }

/* ---------- Page banner ---------- */
.page-banner { position: relative; padding: 140px 0 120px; background-size: cover; background-position: center; overflow: hidden; }
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(14,16,20,.94), rgba(14,16,20,.6)); }
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { color: #fff; font-size: clamp(40px, 6vw, 76px); opacity: 0; animation: fadeUp 1s .1s var(--ease) forwards; }
.page-banner p { color: #c9ccd2; max-width: 640px; margin-top: 18px; opacity: 0; animation: fadeUp 1s .3s var(--ease) forwards; }
.crumbs { display: inline-flex; gap: 12px; align-items: center; margin-top: 26px; padding: 10px 22px; background: var(--red); color: #fff; font-family: var(--head); letter-spacing: 1.5px; text-transform: uppercase; opacity: 0; animation: fadeUp 1s .45s var(--ease) forwards; }
.crumbs a:hover { color: var(--steel); }
.page-banner .big-word { position: absolute; right: -20px; bottom: -40px; font-family: var(--head); font-weight: 800; font-size: clamp(100px, 18vw, 260px); line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.12); text-transform: uppercase; z-index: 1; pointer-events: none; white-space: nowrap; }

/* ---------- Clients marquee ---------- */
.clients { padding: 50px 0; background: var(--white); border-bottom: 1px solid var(--concrete-2); overflow: hidden; }
.clients .label { text-align: center; font-family: var(--head); letter-spacing: 3px; text-transform: uppercase; color: var(--muted); margin-bottom: 26px; font-size: 15px; }
.marquee { display: flex; width: max-content; animation: marquee 32s linear infinite; }
.marquee:hover { animation-play-state: paused; }
.marquee img { height: 70px; width: auto; margin: 0 40px; filter: grayscale(1); opacity: .7; transition: filter .4s, opacity .4s; }
.marquee img:hover { filter: none; opacity: 1; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- About block ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 80px; align-items: center; }
.about-media { position: relative; padding: 0 0 50px 50px; }
.about-media::before { content: ""; position: absolute; left: 0; bottom: 0; width: 70%; height: 75%; border: 3px solid var(--red); z-index: 0; }
.about-media img { position: relative; z-index: 1; width: 100%; aspect-ratio: 1 / 1.02; object-fit: cover; box-shadow: var(--shadow); }
.exp-badge {
  position: absolute; z-index: 2; right: -30px; top: 40px; background: var(--steel); color: #fff; padding: 28px 30px; text-align: center;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  animation: float 5s ease-in-out infinite;
}
.exp-badge strong { display: block; font-family: var(--head); font-size: 58px; color: var(--red); line-height: 1; }
.exp-badge span { font-family: var(--head); letter-spacing: 2px; text-transform: uppercase; font-size: 15px; }
@keyframes float { 50% { transform: translateY(-12px); } }
.exp-badge strong span, .counter strong span { font: inherit; letter-spacing: 0; text-transform: none; opacity: 1; }
.about-text p { color: var(--muted); }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; margin: 30px 0 38px; }
.check-list li { display: flex; gap: 12px; align-items: center; font-weight: 600; color: var(--steel); }
.check-list i { width: 30px; height: 30px; flex: none; display: grid; place-items: center; background: var(--red); color: #fff; font-size: 13px; }

/* ---------- Process ---------- */
.process-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.process-img { position: relative; overflow: hidden; }
.process-img img { width: 100%; height: 100%; min-height: 520px; object-fit: cover; }
.process-img::after { content: ""; position: absolute; inset: 22px; border: 1px solid rgba(255,255,255,.4); pointer-events: none; }
.steps { position: relative; }
.steps::before { content: ""; position: absolute; left: 33px; top: 20px; bottom: 20px; width: 2px; background: var(--steel-3); }
.steps .progress-line { position: absolute; left: 33px; top: 20px; width: 2px; height: 0; background: var(--red); transition: height 1.8s var(--ease); }
.steps.in .progress-line { height: calc(100% - 40px); }
.step { position: relative; display: flex; gap: 28px; padding: 18px 0; }
.step .num {
  flex: none; width: 68px; height: 68px; display: grid; place-items: center; font-family: var(--head); font-weight: 700; font-size: 26px;
  background: var(--steel-2); color: #fff; border: 2px solid var(--steel-3); position: relative; z-index: 1; transition: background .4s, border-color .4s, transform .4s;
}
.step:hover .num { background: var(--red); border-color: var(--red); transform: rotate(-6deg) scale(1.05); }
.step h3 { font-size: 24px; margin-bottom: 6px; }
.step p { color: #a3a8b1; font-size: 16px; }
.concrete .step .num, .white-steps .step .num { background: var(--white); color: var(--steel); border-color: var(--concrete-2); }
.concrete .step:hover .num, .white-steps .step:hover .num { color: #fff; }
.concrete .steps::before, .white-steps .steps::before { background: var(--concrete-2); }
.concrete .step p, .white-steps .step p { color: var(--muted); }

/* ---------- Projects ---------- */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.project-card { position: relative; overflow: hidden; background: var(--steel); min-height: 480px; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; isolation: isolate; }
.project-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform 1.2s var(--ease); }
.project-card::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, transparent 30%, rgba(14,16,20,.95) 100%); transition: background .5s; }
.project-card:hover img { transform: scale(1.1) rotate(1deg); }
.project-card:hover::before { background: linear-gradient(180deg, rgba(179,38,43,.25) 0%, rgba(14,16,20,.97) 100%); }
.project-card .body { padding: 34px; transform: translateY(46px); transition: transform .6s var(--ease); }
.project-card:hover .body { transform: none; }
.project-card .loc { display: inline-flex; gap: 8px; align-items: center; padding: 5px 14px; background: var(--red); font-family: var(--head); letter-spacing: 1.5px; text-transform: uppercase; font-size: 14px; margin-bottom: 14px; }
.project-card h3 { color: #fff; margin-bottom: 8px; }
.project-card p { color: #c9ccd2; font-size: 16px; }
.project-card .more { display: inline-flex; gap: 10px; align-items: center; margin-top: 18px; font-family: var(--head); letter-spacing: 1.5px; text-transform: uppercase; color: var(--yellow); opacity: 0; transition: opacity .5s .1s, gap .3s; }
.project-card:hover .more { opacity: 1; }
.project-card .more:hover { gap: 16px; }
.project-card .index { position: absolute; top: 24px; right: 28px; font-family: var(--head); font-weight: 800; font-size: 64px; line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.5); }

/* ---------- Counters ---------- */
.counters { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--red); position: relative; z-index: 2; margin-top: -70px; box-shadow: var(--shadow); }
.counter { padding: 42px 30px; color: #fff; text-align: center; border-left: 1px solid rgba(255,255,255,.18); }
.counter:first-child { border-left: 0; }
.counter i { font-size: 32px; opacity: .85; margin-bottom: 12px; }
.counter strong { display: block; font-family: var(--head); font-size: 54px; line-height: 1; }
.counter span { font-family: var(--head); letter-spacing: 1.5px; text-transform: uppercase; font-size: 16px; opacity: .9; }

/* ---------- Services strip ---------- */
.services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--concrete-2); }
.service { padding: 46px 34px; border-right: 1px solid var(--concrete-2); position: relative; overflow: hidden; background: #fff; transition: color .5s; z-index: 0; }
.service:last-child { border-right: 0; }
.service::before { content: ""; position: absolute; inset: 0; background: var(--steel); transform: translateY(101%); transition: transform .6s var(--ease); z-index: -1; }
.service:hover::before { transform: none; }
.service:hover h3 { color: #fff; } .service:hover p { color: #a3a8b1; }
.service .ic { width: 70px; height: 70px; display: grid; place-items: center; background: var(--concrete); color: var(--red); font-size: 28px; margin-bottom: 26px; transition: background .5s, color .5s, transform .5s; }
.service:hover .ic { background: var(--red); color: #fff; transform: rotateY(180deg); }
.service h3 { font-size: 24px; margin-bottom: 10px; transition: color .5s; }
.service p { color: var(--muted); font-size: 16px; transition: color .5s; }
.service .n { position: absolute; top: 26px; right: 26px; font-family: var(--head); font-size: 20px; color: var(--concrete-2); font-weight: 700; }

/* ---------- Testimonials ---------- */
.testi-section { position: relative; background-size: cover; background-position: center; background-attachment: fixed; }
.testi-section::before { content: ""; position: absolute; inset: 0; background: rgba(14,16,20,.9); }
.testi-section .container { position: relative; }
.testi-slider { position: relative; overflow: hidden; }
.testi-track { display: flex; transition: transform .8s var(--ease); }
.testi { flex: 0 0 calc(100% / 3); padding: 0 15px; }
.testi .card { height: 100%; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); padding: 40px 36px; position: relative; transition: border-color .4s, transform .4s; }
.testi .card:hover { border-color: var(--red); transform: translateY(-6px); }
.testi .quote { position: absolute; top: 26px; right: 30px; font-size: 44px; color: var(--red); opacity: .6; }
.testi .stars { color: var(--yellow); margin-bottom: 18px; letter-spacing: 3px; font-size: 14px; }
.testi p { color: #d5d8dd; font-size: 18px; font-style: italic; margin-bottom: 28px; }
.testi .who { display: flex; align-items: center; gap: 16px; }
.testi .who img { width: 58px; height: 58px; border-radius: 50%; border: 3px solid var(--red); object-fit: cover; }
.testi .who strong { display: block; font-family: var(--head); font-size: 21px; color: #fff; text-transform: uppercase; letter-spacing: 1px; }
.testi .who span { color: var(--red); font-size: 15px; font-weight: 600; }
.slider-nav { display: flex; gap: 10px; justify-content: center; margin-top: 46px; }
.slider-nav button { width: 54px; height: 54px; border: 1px solid rgba(255,255,255,.25); background: transparent; color: #fff; cursor: pointer; font-size: 16px; transition: background .3s, border-color .3s; }
.slider-nav button:hover { background: var(--red); border-color: var(--red); }

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.faq-side { position: sticky; top: 120px; }
.faq-side img { margin-top: 34px; width: 100%; aspect-ratio: 4/3; object-fit: cover; box-shadow: var(--shadow); }
.faq-item { border: 1px solid var(--concrete-2); background: #fff; margin-bottom: 14px; transition: border-color .3s, box-shadow .3s; }
.faq-item.open { border-color: var(--red); box-shadow: 0 14px 30px -18px rgba(179,38,43,.5); }
.faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 26px; background: none; border: 0; text-align: left; font-family: var(--head); font-size: 21px; font-weight: 600; color: var(--steel); cursor: pointer; text-transform: uppercase; letter-spacing: .5px; }
.faq-q .pm { flex: none; width: 34px; height: 34px; display: grid; place-items: center; background: var(--concrete); color: var(--red); transition: transform .4s var(--ease), background .3s, color .3s; }
.faq-item.open .pm { transform: rotate(135deg); background: var(--red); color: #fff; }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .5s var(--ease); }
.faq-a > div { overflow: hidden; }
.faq-a p { padding: 0 26px 24px; color: var(--muted); }
.faq-item.open .faq-a { grid-template-rows: 1fr; }

/* ---------- CTA ---------- */
.cta { position: relative; background: var(--red); overflow: hidden; padding: 80px 0; }
.cta::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(-45deg, rgba(0,0,0,.06) 0 2px, transparent 2px 22px); }
.cta .container { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }
.cta h2 { color: #fff; max-width: 760px; }
.cta .cta-logo { position: absolute; right: -60px; top: 50%; transform: translateY(-50%); height: 260px; width: auto; opacity: .1; pointer-events: none; }
.cta .btn { background: var(--steel); border-color: var(--steel); }

/* ---------- Footer ---------- */
.footer { background: var(--steel); color: #a3a8b1; padding-top: 90px; position: relative; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 50px; padding-bottom: 60px; }
.footer .flogo { background: #fff; display: inline-block; padding: 14px 18px; margin-bottom: 24px; }
.footer .flogo img { height: 40px; width: auto; }
.footer h4 { color: #fff; font-size: 22px; margin-bottom: 26px; position: relative; padding-bottom: 14px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; background: var(--red); }
.footer li { margin-bottom: 12px; }
.footer li a { display: inline-flex; align-items: center; gap: 10px; transition: color .3s, transform .3s; }
.footer li a:hover { color: #fff; transform: translateX(6px); }
.footer li a i { color: var(--red); font-size: 12px; }
.f-contact li { display: flex; gap: 14px; align-items: flex-start; }
.f-contact i { color: var(--red); width: 18px; margin-top: 6px; }
.f-contact a:hover { color: #fff; }
.socials { display: flex; gap: 10px; margin-top: 24px; }
.socials a { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--steel-3); transition: background .3s, border-color .3s, transform .3s; }
.socials a:hover { background: var(--red); border-color: var(--red); color: #fff; transform: translateY(-4px); }
.footer-bottom { border-top: 1px solid var(--steel-3); padding: 24px 0; font-size: 15px; }
.footer-bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer-bottom a:hover { color: #fff; }

/* back to top */
.to-top { position: fixed; right: 24px; bottom: 24px; z-index: 800; width: 52px; height: 52px; background: var(--red); color: #fff; border: 0; cursor: pointer; display: grid; place-items: center; font-size: 18px; opacity: 0; visibility: hidden; transform: translateY(20px); transition: .4s var(--ease); }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--steel); }
.wa-float { position: fixed; left: 24px; bottom: 24px; z-index: 800; width: 56px; height: 56px; border-radius: 50%; background: #25d366; color: #fff; display: grid; place-items: center; font-size: 28px; box-shadow: 0 10px 25px -8px rgba(37,211,102,.7); }
.wa-float::before { content: ""; position: absolute; inset: 0; border-radius: 50%; border: 2px solid #25d366; animation: pulse 2s infinite; }
@keyframes pulse { from { transform: scale(1); opacity: .8; } to { transform: scale(1.6); opacity: 0; } }

/* ---------- Projects page ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.split .media { position: relative; }
.split .media img { width: 100%; aspect-ratio: 4/3.4; object-fit: cover; box-shadow: var(--shadow); }
.split .media::after { content: ""; position: absolute; right: -22px; bottom: -22px; width: 55%; height: 55%; background: var(--red); z-index: -1; }
.split p { color: var(--muted); }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.gallery figure { position: relative; overflow: hidden; cursor: zoom-in; background: var(--steel); aspect-ratio: 4/3; }
.gallery figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease), opacity .5s; }
.gallery figure:hover img { transform: scale(1.08); opacity: .7; }
.gallery figure::after { content: "\f00e"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; inset: 0; display: grid; place-items: center; color: #fff; font-size: 30px; opacity: 0; transform: scale(.6); transition: .4s var(--ease); }
.gallery figure:hover::after { opacity: 1; transform: none; }
.gallery figcaption { position: absolute; left: 0; bottom: 0; padding: 10px 18px; background: var(--red); color: #fff; font-family: var(--head); letter-spacing: 1.5px; text-transform: uppercase; font-size: 15px; }

.table-wrap { overflow-x: auto; box-shadow: var(--shadow); background: #fff; }
.exec-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.exec-table th { background: var(--steel); color: #fff; font-family: var(--head); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; text-align: left; padding: 20px 24px; font-size: 18px; }
.exec-table th:first-child { background: var(--red); width: 90px; text-align: center; }
.exec-table td { padding: 18px 24px; border-bottom: 1px solid var(--concrete-2); }
.exec-table td:first-child { text-align: center; font-family: var(--head); font-weight: 700; font-size: 22px; color: var(--red); }
.exec-table td:nth-child(2) { font-weight: 700; color: var(--steel); }
.exec-table tbody tr { transition: background .3s; }
.exec-table tbody tr:hover { background: var(--concrete); }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 9990; background: rgba(10,12,15,.94); display: grid; place-items: center; padding: 30px; opacity: 0; visibility: hidden; transition: .4s; }
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img { max-height: 86vh; width: auto; transform: scale(.9); transition: transform .5s var(--ease); }
.lightbox.open img { transform: none; }
.lightbox button { position: absolute; top: 20px; right: 24px; width: 50px; height: 50px; border: 0; background: var(--red); color: #fff; font-size: 20px; cursor: pointer; }

/* ---------- Project detail ---------- */
.detail-intro { display: grid; grid-template-columns: 1.3fr 1fr; gap: 50px; align-items: start; }
.detail-intro .lead { font-size: 21px; color: var(--steel); font-weight: 500; }
.info-box { background: var(--steel); color: #c9ccd2; padding: 40px; position: relative; }
.info-box::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 6px; background: var(--red); }
.info-box li { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--steel-3); }
.info-box li:last-child { border-bottom: 0; }
.info-box strong { color: #fff; font-family: var(--head); letter-spacing: 1px; text-transform: uppercase; font-weight: 600; }
.info-box span { text-align: right; }
.partner-box { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.partner-box .pb { padding: 46px 40px; background: #fff; border-top: 4px solid var(--red); box-shadow: var(--shadow); transition: transform .4s var(--ease); }
.partner-box .pb:hover { transform: translateY(-8px); }
.partner-box .pb i { font-size: 36px; color: var(--red); margin-bottom: 20px; }
.partner-box h3 { margin-bottom: 16px; }
.partner-box p { color: var(--muted); }
.other-projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.other-projects .project-card { min-height: 380px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 0; box-shadow: var(--shadow); }
.contact-info { background: var(--steel); color: #c9ccd2; padding: 60px 50px; position: relative; overflow: hidden; }
.contact-info::after { content: ""; position: absolute; right: -80px; bottom: -80px; width: 240px; height: 240px; border: 30px solid rgba(179,38,43,.25); transform: rotate(45deg); }
.contact-info h3 { color: #fff; font-size: 34px; margin-bottom: 14px; }
.c-item { display: flex; gap: 20px; margin-top: 34px; position: relative; z-index: 1; }
.c-item .ic { flex: none; width: 58px; height: 58px; display: grid; place-items: center; background: var(--red); color: #fff; font-size: 22px; }
.c-item strong { display: block; color: #fff; font-family: var(--head); text-transform: uppercase; letter-spacing: 1.5px; font-size: 19px; }
.c-item a:hover { color: #fff; }
.contact-form { background: #fff; padding: 60px 50px; }
.contact-form h3 { font-size: 34px; margin-bottom: 30px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { position: relative; margin-bottom: 22px; }
.field input, .field textarea { width: 100%; padding: 18px 20px; font: inherit; border: 1px solid var(--concrete-2); background: var(--concrete); outline: none; transition: border-color .3s, background .3s; }
.field textarea { min-height: 160px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--red); background: #fff; }
.field::after { content: ""; position: absolute; left: 0; bottom: 0; height: 3px; width: 0; background: var(--red); transition: width .5s var(--ease); }
.field:focus-within::after { width: 100%; }
.form-note { margin-top: 16px; font-size: 15px; color: var(--muted); }
.map { margin-top: 0; filter: grayscale(.85) contrast(1.05); transition: filter .5s; }
.map:hover { filter: none; }
.map iframe { width: 100%; height: 440px; border: 0; display: block; }

/* ---------- Reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(50px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.left { transform: translateX(-60px); }
.reveal.right { transform: translateX(60px); }
.reveal.zoom { transform: scale(.88); }
.reveal.in { opacity: 1; transform: none; }
.img-reveal { position: relative; overflow: hidden; }
.img-reveal::before { content: ""; position: absolute; inset: 0; background: var(--red); z-index: 5; transform-origin: right; transition: transform 1.1s var(--ease); }
.img-reveal.in::before { transform: scaleX(0); }
.img-reveal img { transform: scale(1.25); transition: transform 1.6s var(--ease); }
.img-reveal.in img { transform: scale(1); }
.d1 { transition-delay: .1s !important; } .d2 { transition-delay: .2s !important; } .d3 { transition-delay: .3s !important; } .d4 { transition-delay: .4s !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal, .hero h1 .line span { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .nav-wrap .btn { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .services { grid-template-columns: 1fr 1fr; }
  .service:nth-child(2) { border-right: 0; }
  .service:nth-child(-n+2) { border-bottom: 1px solid var(--concrete-2); }
}
@media (max-width: 960px) {
  .section { padding: 80px 0; }
  .burger { display: block; }
  .nav { position: fixed; top: 0; right: 0; width: min(340px, 85vw); height: 100vh; background: var(--steel); flex-direction: column; align-items: stretch; gap: 0; padding: 110px 30px 30px; transform: translateX(100%); transition: transform .6s var(--ease); z-index: -1; box-shadow: -20px 0 60px rgba(0,0,0,.4); }
  .nav.open { transform: none; }
  .nav a { color: #fff; font-size: 24px; padding: 16px 0; border-bottom: 1px solid var(--steel-3); }
  .nav a::after { left: 0; right: auto; width: 40px; }
  .about-grid, .process-wrap, .faq-grid, .split, .detail-intro, .contact-grid { grid-template-columns: 1fr; gap: 50px; }
  .faq-side { position: static; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .testi { flex-basis: 50%; }
  .counters { grid-template-columns: 1fr 1fr; }
  .counter:nth-child(3) { border-left: 0; }
  .counter:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.18); }
  .hero-stats { position: relative; clip-path: none; width: 100%; }
  .hero { flex-direction: column; align-items: stretch; justify-content: center; }
  .hero .container { padding: 80px 0 90px; }
  .hero-stats div, .hero-stats div:first-child { flex: 1; padding: 22px 16px; text-align: center; }
  .hero-dots { bottom: 120px; }
  .exp-badge { right: 10px; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .partner-box, .other-projects { grid-template-columns: 1fr; }
  .topbar .tagline { display: none; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .topbar { display: none; }
  .header .container { height: 76px; }
  .logo img { height: 36px; }
  .projects-grid, .gallery, .services { grid-template-columns: 1fr; }
  .service { border-right: 0; border-bottom: 1px solid var(--concrete-2); }
  .testi { flex-basis: 100%; }
  .check-list, .form-row, .footer-grid { grid-template-columns: 1fr; }
  .about-media { padding: 0 0 30px 30px; }
  .exp-badge { padding: 18px 20px; top: 20px; }
  .exp-badge strong { font-size: 42px; }
  .hero-stats strong { font-size: 30px; }
  .hero-stats span { font-size: 12px; }
  .counter strong { font-size: 40px; }
  .counter { padding: 30px 14px; }
  .contact-info, .contact-form { padding: 44px 24px; }
  .process-img img { min-height: 320px; }
  .step { gap: 18px; }
  .step .num { width: 56px; height: 56px; font-size: 22px; }
  .steps::before, .steps .progress-line { left: 27px; }
  .page-banner { padding: 100px 0 90px; }
  .cta .cta-logo { display: none; }
  .split .media::after { right: -10px; bottom: -10px; }
  .info-box { padding: 30px 24px; }
}