:root {
  --bg: #18191b;
  --panel: #222326;
  --text: #ddd;
  --muted: #a6a6a6;
  --accent: #d8c6a3;
  --line: rgba(255,255,255,.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  height: 80px;
  background: rgba(45,45,45,.97);
  border-bottom: 1px solid rgba(255,255,255,.03);
}
.header-inner {
  width: min(1140px, calc(100% - 40px));
  height: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { width: 220px; height: auto; }

.hero {
  position: relative;
  min-height: 630px;
  display: grid;
  place-items: end center;
  overflow: hidden;
  padding: 0 24px 54px;
}
.hero video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.72)); }
.hero h1 {
  position: relative;
  max-width: 980px;
  margin: 0;
  color: white;
  text-align: center;
  text-transform: uppercase;
  font-size: clamp(26px, 3vw, 44px);
  line-height: 1.25;
  letter-spacing: 1px;
  font-weight: 500;
}

.section { padding: 80px max(24px, calc((100% - 1140px) / 2)); }
.products { padding-top: 20px; padding-bottom: 100px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  position: relative;
  min-height: 253px;
  background-image: var(--image);
  background-position: center;
  background-size: cover;
  overflow: hidden;
  isolation: isolate;
}
.product-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(20,20,20,.15);
  transition: background .35s;
}
.product-card span {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 25px;
  text-align: center;
  opacity: 0;
  transform: translateY(15px);
  transition: .35s;
}
.product-card strong { color: white; text-transform: uppercase; font-size: 21px; font-weight: 500; }
.product-card em { margin-top: 20px; border: 1px solid rgba(255,255,255,.65); padding: 8px 20px; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; font-style: normal; }
.product-card:hover::after, .product-card:focus-visible::after { background: rgba(24,24,24,.88); }
.product-card:hover span, .product-card:focus-visible span { opacity: 1; transform: translateY(0); }

.feature {
  min-height: 430px;
  display: flex;
  align-items: center;
  padding: 60px max(24px, calc((100% - 1140px) / 2));
  background-position: center;
  background-size: cover;
}
.feature-tunnel { background-image: linear-gradient(90deg, rgba(0,0,0,.1), rgba(0,0,0,.6)), url("assets/c48d41dee0e85cc6.jpg"); }
.feature-pressure { background-image: linear-gradient(90deg, rgba(0,0,0,.76), rgba(0,0,0,.12)), url("assets/0d3de518aa9bd159.jpeg"); }
.feature-content { max-width: 600px; }
.feature-right { margin-left: auto; text-align: right; }
.feature h2 { margin: 2px 0 18px; color: white; font-size: clamp(28px, 4vw, 50px); line-height: 1.1; text-transform: uppercase; font-weight: 500; }
.feature p:not(.eyebrow) { font-size: 17px; }
.eyebrow { margin: 0; color: var(--accent); text-transform: uppercase; letter-spacing: 4px; font-size: 11px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-block;
  border: 1px solid white;
  background: white;
  color: #1b1b1b;
  padding: 11px 24px;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 11px;
  cursor: pointer;
  transition: .25s;
}
.button:hover { background: var(--accent); border-color: var(--accent); }
.button-outline { background: transparent; color: white; }

.tunnel-gallery { min-height: 520px; display: grid; place-items: center; }
.mini-gallery { display: grid; grid-template-columns: repeat(3, 160px); gap: 18px; }
.mini-gallery button, .project { padding: 0; border: 0; background: none; cursor: pointer; }
.mini-gallery img { width: 160px; aspect-ratio: 1; object-fit: cover; filter: grayscale(.2); transition: .25s; }
.mini-gallery button:hover img { transform: scale(1.04); filter: none; }

.section-title { margin: 0 0 42px; color: white; text-align: center; text-transform: uppercase; font-size: 26px; font-weight: 500; letter-spacing: 2px; }
.section-title::after { content: ""; display: block; width: 44px; height: 2px; margin: 14px auto 0; background: var(--accent); }
.projects-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px; }
.project { position: relative; overflow: hidden; }
.project img { width: 100%; aspect-ratio: 1.5; object-fit: cover; transition: transform .45s, filter .45s; }
.project span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(12,12,12,.66);
  color: white;
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 11px;
  opacity: 0;
  transition: opacity .35s;
}
.project:hover img { transform: scale(1.07); filter: grayscale(.7); }
.project:hover span { opacity: 1; }

.clients { background: #0a0000; }
.section-subtitle { max-width: 760px; margin: -20px auto 45px; text-align: center; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; font-size: 13px; }
.logo-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 18px; align-items: center; }
.logo-grid img { width: 100%; aspect-ratio: 1; object-fit: contain; background: white; filter: grayscale(1); opacity: .78; transition: .25s; }
.logo-grid img:hover { filter: none; opacity: 1; }

.contacts { padding-bottom: 0; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; min-height: 350px; }
.contact-details { display: grid; grid-template-columns: 1fr 1fr; align-content: center; gap: 25px; padding: 30px; background: #222326; }
.contact-details span { color: var(--accent); font-size: 11px; text-transform: uppercase; letter-spacing: 2px; }
.contact-details p { margin: 5px 0 0; color: white; }
.map iframe { width: 100%; height: 100%; min-height: 350px; border: 0; filter: grayscale(1) invert(.87) contrast(.85); }

.contact-form-section {
  min-height: 720px;
  padding: 90px max(24px, calc((100% - 760px) / 2));
  background: linear-gradient(rgba(14,14,14,.76),rgba(14,14,14,.82)), url("assets/a164def686ffde35.jpg") center/cover fixed;
}
.contact-form { display: grid; gap: 22px; }
.contact-form label { color: white; text-transform: uppercase; font-size: 11px; letter-spacing: 1.5px; }
.contact-form input, .contact-form textarea {
  width: 100%;
  margin-top: 8px;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,.42);
  background: rgba(0,0,0,.28);
  color: white;
  padding: 13px;
  outline: none;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form .button { justify-self: start; }
#form-status { min-height: 24px; margin: 0; color: var(--accent); }

footer { min-height: 160px; display: grid; place-items: center; align-content: center; gap: 20px; background: #111214; color: #777; font-size: 12px; }
footer img { width: 150px; opacity: .72; }

#lightbox {
  max-width: min(1000px, 92vw);
  padding: 0;
  border: 0;
  background: #111;
  box-shadow: 0 20px 80px #000;
}
#lightbox::backdrop { background: rgba(0,0,0,.88); }
#lightbox img { max-height: 84vh; max-width: 90vw; }
.lightbox-close { position: absolute; top: 4px; right: 8px; z-index: 2; color: white; border: 0; background: rgba(0,0,0,.5); font-size: 32px; cursor: pointer; }

@media (max-width: 900px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
  .logo-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 640px) {
  .site-header, .header-inner { height: 70px; }
  .logo { width: 174px; }
  .hero { min-height: 520px; padding-bottom: 40px; }
  .hero h1 { width: 100%; max-width: 350px; font-size: 23px; line-height: 1.35; overflow-wrap: anywhere; }
  .hero h1 br { display: block; }
  .section { padding: 62px 20px; }
  .product-grid, .projects-grid, .contact-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 280px; }
  .product-card span { opacity: 1; transform: none; justify-content: end; align-items: start; background: linear-gradient(transparent,rgba(0,0,0,.86)); }
  .feature { min-height: 520px; }
  .feature-right { margin: auto 0 0; text-align: left; }
  .mini-gallery { grid-template-columns: repeat(3, 1fr); width: 100%; }
  .mini-gallery img { width: 100%; }
  .projects-grid { gap: 8px; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-details { grid-template-columns: 1fr; }
  .contact-form-section { background-attachment: scroll; }
}