:root {
  --ink: #071c31;
  --navy: #0a2440;
  --navy-2: #123b63;
  --blue: #0b78a8;
  --cyan: #28b4c6;
  --gold: #d7ad58;
  --paper: #f5f3ed;
  --white: #fff;
  --muted: #607080;
  --line: rgba(7, 28, 49, 0.14);
  --shadow: 0 22px 60px rgba(7, 28, 49, 0.13);
  --radius: 22px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Tahoma, "Segoe UI", Arial, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}

body.lang-en {
  font-family: "Segoe UI", Arial, sans-serif;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }

.skip-link {
  position: fixed;
  inset-block-start: 10px;
  inset-inline-start: 10px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--white);
  color: var(--ink);
  border-radius: 8px;
  transform: translateY(-140%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  color: var(--white);
  background: linear-gradient(180deg, rgba(5, 20, 36, 0.96), rgba(5, 20, 36, 0.76));
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
}

.site-header.is-scrolled {
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.16);
}

.header-shell,
.section,
.contact-shell,
.footer-shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.header-shell {
  min-height: 82px;
  display: flex;
  align-items: center;
  gap: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  margin-inline-end: auto;
}

.brand-mark {
  display: inline-grid;
  grid-template-columns: repeat(3, 8px);
  align-items: end;
  gap: 4px;
  width: 39px;
  height: 42px;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  transform: skewY(-7deg);
}

.brand-mark i { display: block; background: var(--cyan); }
.brand-mark i:nth-child(1) { height: 17px; }
.brand-mark i:nth-child(2) { height: 29px; background: var(--white); }
.brand-mark i:nth-child(3) { height: 23px; background: var(--gold); }

.brand-copy { display: grid; line-height: 1.25; }
.brand-copy strong { font-size: 17px; letter-spacing: -0.2px; }
.brand-copy small { opacity: 0.66; font-size: 11px; letter-spacing: 1.1px; }

.main-nav { display: flex; align-items: center; gap: 26px; font-size: 14px; }
.main-nav a { position: relative; opacity: 0.82; transition: 180ms ease; }
.main-nav a::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: -8px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transition: 180ms ease;
}
.main-nav a:hover { opacity: 1; }
.main-nav a:hover::after { transform: scaleX(1); }

.language-toggle {
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 12px;
  letter-spacing: 1px;
}

.language-next { opacity: 0.5; }
.language-divider { margin-inline: 3px; opacity: 0.35; }
.menu-toggle { display: none; }

.hero { min-height: 100vh; background: var(--navy); color: var(--white); }
.slider { position: relative; min-height: calc(100vh - 116px); overflow: hidden; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 800ms ease, visibility 800ms ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.slide-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 18, 33, 0.2), rgba(4, 18, 33, 0.86) 72%),
    linear-gradient(0deg, rgba(4, 18, 33, 0.7), transparent 55%);
}

html[dir="ltr"] .slide-shade {
  background:
    linear-gradient(270deg, rgba(4, 18, 33, 0.2), rgba(4, 18, 33, 0.86) 72%),
    linear-gradient(0deg, rgba(4, 18, 33, 0.7), transparent 55%);
}

.slide-content {
  position: absolute;
  inset-inline-start: max(6vw, calc((100vw - 1180px) / 2));
  inset-block-start: 50%;
  width: min(680px, 74vw);
  transform: translateY(-42%);
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.24);
}

.slide-content h1,
.slide-content h2 {
  max-width: 720px;
  margin: 12px 0 18px;
  font-size: clamp(38px, 5.3vw, 76px);
  line-height: 1.22;
  letter-spacing: -1.8px;
}

.slide-content > p:not(.eyebrow) { margin: 0 0 28px; font-size: clamp(16px, 1.8vw, 23px); color: rgba(255, 255, 255, 0.82); }
.eyebrow, .section-kicker { margin: 0; color: var(--cyan); font-weight: 700; font-size: 13px; letter-spacing: 1.8px; text-transform: uppercase; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--cyan); color: var(--ink); }
.button-ghost { border: 1px solid rgba(255,255,255,.5); color: var(--white); }
.button-ghost:hover { background: rgba(255,255,255,.1); }

.slider-arrow {
  position: absolute;
  inset-block-start: 50%;
  z-index: 5;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 50%;
  background: rgba(4,18,33,.32);
  color: white;
  font-size: 34px;
  line-height: 1;
  backdrop-filter: blur(8px);
}
.slider-prev { inset-inline-start: 24px; }
.slider-next { inset-inline-end: 24px; }

.slider-dots { position: absolute; inset-inline-start: 50%; inset-block-end: 28px; z-index: 6; display: flex; gap: 9px; transform: translateX(50%); }
html[dir="ltr"] .slider-dots { transform: translateX(-50%); }
.slider-dot { width: 26px; height: 4px; padding: 0; border: 0; border-radius: 99px; background: rgba(255,255,255,.38); transition: 250ms ease; }
.slider-dot.is-active { width: 52px; background: var(--cyan); }

.hero-facts {
  position: relative;
  z-index: 7;
  width: min(1180px, calc(100% - 48px));
  min-height: 116px;
  margin: -1px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.hero-facts div { display: grid; place-content: center; min-height: 116px; padding: 18px 28px; border-inline-end: 1px solid var(--line); }
.hero-facts div:last-child { border: 0; }
.hero-facts strong { color: var(--blue); font-size: 25px; line-height: 1.25; }
.hero-facts span { color: var(--muted); font-size: 12px; }

.section { padding-block: 112px; }
.section-heading { display: grid; grid-template-columns: .9fr 1.1fr; align-items: end; gap: 70px; margin-block-end: 50px; }
.section-heading h2, .about h2, .contact h2 { margin: 8px 0 0; font-size: clamp(31px, 4vw, 52px); line-height: 1.3; letter-spacing: -1px; }
.section-heading > p { margin: 0; color: var(--muted); font-size: 16px; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-block-start: 1px solid var(--line); border-inline-start: 1px solid var(--line); }
.service-card { position: relative; min-height: 260px; padding: 40px 34px; border-inline-end: 1px solid var(--line); border-block-end: 1px solid var(--line); background: rgba(255,255,255,.3); transition: 220ms ease; overflow: hidden; }
.service-card::after { content: ""; position: absolute; inset: auto 0 0; height: 4px; background: var(--cyan); transform: scaleX(0); transform-origin: right; transition: 220ms ease; }
html[dir="ltr"] .service-card::after { transform-origin: left; }
.service-card:hover { background: var(--white); transform: translateY(-4px); box-shadow: 0 18px 45px rgba(7,28,49,.08); }
.service-card:hover::after { transform: scaleX(1); }
.service-number { color: var(--cyan); font-size: 12px; font-weight: 700; }
.service-card h3 { margin: 28px 0 12px; font-size: 21px; }
.service-card p { margin: 0; color: var(--muted); font-size: 14px; }

.projects { width: 100%; padding-inline: max(24px, calc((100vw - 1380px)/2)); background: var(--navy); color: var(--white); }
.project-heading { width: min(1180px, 100%); margin-inline: auto; }
.project-filters { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.filter-button { padding: 8px 14px; border: 1px solid rgba(255,255,255,.22); border-radius: 999px; background: transparent; color: rgba(255,255,255,.7); font-size: 12px; }
.filter-button.is-active { background: var(--cyan); color: var(--ink); border-color: var(--cyan); }
.project-grid { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 330px; gap: 12px; }
.project-card { position: relative; grid-column: span 4; overflow: hidden; background: #142d45; }
.project-featured { grid-column: span 8; }
.project-wide { grid-column: span 8; }
.project-card.is-hidden { display: none; }
.project-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 700ms cubic-bezier(.2,.7,.2,1), filter 500ms ease; }
.project-card:hover img { transform: scale(1.055); filter: saturate(1.12); }
.project-overlay { position: absolute; inset: auto 0 0; padding: 50px 28px 24px; background: linear-gradient(0deg, rgba(3,14,26,.92), transparent); }
.project-overlay span { color: var(--cyan); font-size: 11px; font-weight: 700; letter-spacing: 1px; }
.project-overlay h3 { max-width: 600px; margin: 6px 0 0; font-size: 19px; line-height: 1.5; }

.about-panel { display: grid; grid-template-columns: .82fr 1.18fr; min-height: 560px; background: var(--white); box-shadow: var(--shadow); }
.about-visual { position: relative; display: grid; place-content: center; min-height: 420px; padding: 50px; color: var(--white); background: linear-gradient(145deg, var(--navy), var(--blue)); overflow: hidden; }
.about-visual::before, .about-visual::after { content: ""; position: absolute; width: 340px; height: 340px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; }
.about-visual::before { inset: -120px -130px auto auto; }
.about-visual::after { inset: auto auto -160px -90px; }
.about-visual strong { position: relative; z-index: 2; font-size: clamp(105px, 14vw, 190px); line-height: .8; color: transparent; -webkit-text-stroke: 2px rgba(255,255,255,.8); }
.about-visual small { position: relative; z-index: 2; margin-top: 26px; font-size: 15px; }
.about-line { position: absolute; inset-inline-start: 48px; inset-block: 48px; width: 1px; background: linear-gradient(transparent, var(--cyan), transparent); }
.about-copy { align-self: center; padding: 70px clamp(36px, 6vw, 90px); }
.about-copy > p:not(.section-kicker) { color: var(--muted); }
.about-copy blockquote { margin: 30px 0 0; padding: 20px 24px; border-inline-start: 3px solid var(--cyan); background: #f4f8fa; font-weight: 700; }

.contact { padding-block: 100px; color: var(--white); background: #061b2f; }
.contact-shell { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
.contact-intro p:last-child { color: rgba(255,255,255,.62); }
.contact-details { border-block-start: 1px solid rgba(255,255,255,.15); }
.contact-details a, .contact-details > div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 20px 0; border-block-end: 1px solid rgba(255,255,255,.15); }
.contact-details span { color: var(--cyan); font-size: 12px; }
.contact-details strong { font-size: 14px; font-weight: 500; }

.site-footer { padding-block: 42px; background: #041321; color: rgba(255,255,255,.66); }
.footer-shell { display: grid; grid-template-columns: 1.4fr 1fr; gap: 30px; align-items: center; }
.footer-brand { display: flex; align-items: center; gap: 16px; color: var(--white); }
.footer-brand > div { display: grid; }
.footer-brand small { color: rgba(255,255,255,.55); }
.site-footer nav { display: flex; justify-content: flex-end; gap: 22px; font-size: 13px; }
.site-footer p { grid-column: 1 / -1; margin: 20px 0 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); font-size: 11px; }

@media (max-width: 900px) {
  .header-shell { min-height: 72px; }
  .menu-toggle { display: grid; gap: 5px; margin-inline-start: auto; padding: 10px; border: 0; background: transparent; }
  .menu-toggle span { width: 24px; height: 2px; background: white; }
  .brand { margin-inline-end: 0; }
  .main-nav { position: fixed; inset: 72px 0 auto; display: grid; padding: 20px 24px 26px; background: rgba(4,19,33,.98); transform: translateY(-130%); opacity: 0; transition: 220ms ease; }
  .main-nav.is-open { transform: translateY(0); opacity: 1; }
  .language-toggle { margin-inline-start: 4px; }
  .slider { min-height: 760px; }
  .slide-content { width: calc(100% - 64px); inset-inline-start: 32px; }
  .slider-arrow { display: none; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); }
  .hero-facts div:nth-child(2) { border-inline-end: 0; }
  .hero-facts div:nth-child(-n+2) { border-block-end: 1px solid var(--line); }
  .section-heading, .contact-shell { grid-template-columns: 1fr; gap: 26px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .project-heading { align-items: start; }
  .project-filters { justify-content: flex-start; }
  .project-card, .project-featured, .project-wide { grid-column: span 6; }
  .about-panel { grid-template-columns: 1fr; }
  .about-visual { min-height: 360px; }
}

@media (max-width: 620px) {
  .header-shell, .section, .contact-shell, .footer-shell { width: min(100% - 28px, 1180px); }
  .brand-copy small { display: none; }
  .brand-copy strong { font-size: 14px; }
  .brand-mark { width: 34px; height: 37px; }
  .slider { min-height: 680px; }
  .slide-content { inset-inline-start: 22px; width: calc(100% - 44px); }
  .slide-content h1, .slide-content h2 { font-size: 37px; }
  .hero-facts { width: calc(100% - 28px); }
  .hero-facts div { min-height: 104px; padding: 16px; }
  .section { padding-block: 78px; }
  .section-heading { margin-bottom: 34px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 220px; }
  .projects { padding-inline: 14px; }
  .project-grid { grid-auto-rows: 300px; }
  .project-card, .project-featured, .project-wide { grid-column: span 12; }
  .about-copy { padding: 48px 26px; }
  .contact { padding-block: 72px; }
  .contact-details a, .contact-details > div { grid-template-columns: 1fr; gap: 4px; }
  .footer-shell { grid-template-columns: 1fr; }
  .site-footer nav { justify-content: flex-start; flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}