:root {
  --color-bg: #05233c;
  --color-bg-alt: #0b3454;
  --color-primary: #1b67a5;
  --color-primary-light: #3a8ed2;
  --color-text: #f2f7fb;
  --color-text-muted: #bac7d4;
  --color-dark: #091725;
  --color-card-bg: rgba(11, 52, 84, 0.8);
  --color-border: rgba(255, 255, 255, 0.08);
  --max-width: 1200px;
  --transition: 0.3s ease;
  --font-sans: "Montserrat", "Segoe UI", "Roboto", Arial, sans-serif;
  --gradient-body: radial-gradient(circle at 15% 20%, rgba(58, 142, 210, 0.42), transparent 55%),
    radial-gradient(circle at 78% 18%, rgba(27, 103, 165, 0.32), transparent 60%),
    radial-gradient(circle at 50% 120%, rgba(8, 36, 64, 0.5), transparent 75%),
    linear-gradient(135deg, #031120 0%, #071c34 55%, #082640 100%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--gradient-body);
  background-attachment: fixed;
  background-color: #031120;
  color: var(--color-text);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 4px;
}

.container {
  width: min(100% - 32px, var(--max-width));
  margin-inline: auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(4, 24, 44, 0.9);
  border-bottom: 1px solid var(--color-border);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.header__logo img {
  border-radius: 12px;
}

.header__cta {
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid var(--color-primary-light);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  transition: background var(--transition);
}

.header__cta:hover {
  background: var(--color-primary);
}

.nav {
  position: relative;
}

.nav__menu {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__menu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.nav__menu a:hover,
.nav__menu a:focus {
  color: var(--color-primary-light);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--color-text);
}

.nav__toggle-line {
  width: 28px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle-text {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  min-height: clamp(680px, 100vh, 920px);
  padding: 160px 0 140px;
  display: flex;
  align-items: center;
  background: transparent;
  overflow: visible;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 96px;
  align-items: center;
}

.hero__text {
  display: grid;
  gap: 28px;
  max-width: 520px;
}

.hero__tagline {
  font-size: 0.95rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(242, 247, 251, 0.75);
}

.hero__text h1 {
  margin: 0;
  font-size: clamp(3.2rem, 6vw, 4.8rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.05;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.hero__lead {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-text);
  box-shadow: 0 12px 24px rgba(27, 103, 165, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(27, 103, 165, 0.4);
}

.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  color: rgba(242, 247, 251, 0.7);
  font-size: 0.95rem;
}

.hero__meta span {
  line-height: 1.6;
}

.hero__phone {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

.hero__phone:hover {
  color: var(--color-primary-light);
}

.hero__visual {
  position: relative;
  min-height: 560px;
  border-radius: 48px;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(160deg, rgba(11, 45, 84, 0.85), rgba(3, 17, 32, 0.9));
  box-shadow: 0 40px 80px rgba(3, 17, 32, 0.6);
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle at 40% 20%, rgba(27, 103, 165, 0.45), transparent 70%);
  filter: blur(60px);
  opacity: 0.7;
  z-index: 1;
}

.hero__visual-image {
  position: absolute;
  inset: 0;
  background:
      linear-gradient(180deg, rgba(5, 19, 34, 0) 45%, rgba(5, 19, 34, 0.85) 100%),
      linear-gradient(90deg, rgba(5, 19, 34, 0.2) 0%, rgba(5, 19, 34, 0.8) 100%),
      url("assets/hero-desktop.jpg");
  background-size: cover;
  background-position: top center;
  filter: saturate(1.1) contrast(1.05);
  z-index: 0;
}

.hero__badge {
  position: absolute;
  left: 32px;
  bottom: 32px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-radius: 999px;
  background: rgba(4, 24, 44, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero__badge img {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
}

.hero__watermark {
  position: absolute;
  right: 72px;
  bottom: 56px;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 18px 28px;
  border-radius: 24px;
  background: rgba(4, 24, 44, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(242, 247, 251, 0.65);
}

.hero__watermark img {
  width: 48px;
  height: 48px;
}

.section {
  padding: 96px 0;
}

.section__header--center {
  text-align: center;
  margin-inline: auto;
}

.section__eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(242, 247, 251, 0.6);
}

.section--light {
  background: rgba(9, 23, 37, 0.4);
  backdrop-filter: blur(18px);
}

.section__header {
  max-width: 720px;
  margin-bottom: 48px;
}

.section__header h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 2vw + 1rem, 2.6rem);
}

.section__header p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.section__header--center p {
  max-width: 620px;
  margin-inline: auto;
}

.grid {
  display: grid;
  gap: 32px;
}

.section--services {
  position: relative;
  background: transparent;
  overflow: hidden;
}

.section--services .container {
  position: relative;
  z-index: 1;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 64px;
}

.service-card {
  position: relative;
  padding: 36px 32px;
  border-radius: 32px;
  background: rgba(5, 24, 43, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 24px 48px rgba(2, 12, 22, 0.45);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: grid;
  gap: 16px;
}

.service-card::after {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 26px;
  background: radial-gradient(circle at 20% 20%, rgba(58, 142, 210, 0.18), transparent);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 32px 70px rgba(5, 24, 43, 0.55);
  border-color: rgba(58, 142, 210, 0.4);
}

.service-card:hover::after {
  opacity: 1;
}

.service-card__index {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(242, 247, 251, 0.5);
}

.service-card h3 {
  margin: 0;
  font-size: 1.4rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.service-card p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(242, 247, 251, 0.75);
}

.section--projects {
  position: relative;
  overflow: hidden;
}

.projects-intro {
  margin-top: 56px;
  max-width: 860px;
  margin-inline: auto;
  display: grid;
  gap: 28px;
}

.projects-intro p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text-muted);
}

.projects-intro .btn {
  justify-self: center;
}
.grid--services {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: rgba(4, 24, 44, 0.9);
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card img {
  height: 220px;
  object-fit: cover;
}

.card__body {
  padding: 28px;
}

.card__body h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.card__body p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(5, 35, 60, 0.35);
}

.grid--advantages {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.chip {
  padding: 24px;
  border-radius: 20px;
  background: var(--color-card-bg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
}

.chip h3 {
  margin: 0 0 12px;
}

.chip p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.projects__item {
  border-radius: 24px;
  background: rgba(4, 24, 44, 0.8);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.projects__item figure {
  margin: 0;
}

.projects__item img {
  height: 240px;
  width: 100%;
  object-fit: cover;
}

.projects__item figcaption {
  padding: 24px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.about {
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  align-items: start;
}

.about__text p {
  margin: 0 0 18px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.about__timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
  display: grid;
  gap: 24px;
}

.about__timeline li {
  position: relative;
  padding-left: 24px;
  color: var(--color-text-muted);
}

.about__timeline li::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--color-primary-light);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(27, 103, 165, 0.18);
}

.about__year {
  display: block;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.contacts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: stretch;
}

.contacts__info {
  background: rgba(4, 24, 44, 0.9);
  border-radius: 24px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: grid;
  gap: 16px;
}

.contacts__info h3 {
  margin: 0 0 8px;
}

.contacts__info p {
  margin: 0;
  color: var(--color-text-muted);
}

.contacts__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.contacts__list li {
  display: grid;
  gap: 6px;
}

.contacts__label {
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(242, 247, 251, 0.55);
}

.contacts__value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
}

.contacts__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  padding-bottom: 2px;
  transition: border-color var(--transition), color var(--transition);
}

.contacts__value a:hover,
.contacts__value a:focus-visible {
  color: var(--color-primary-light);
  border-color: rgba(58, 142, 210, 0.6);
}

.contacts__cta {
  margin-top: 8px;
}

.contacts__cta .btn {
  width: fit-content;
}

.contacts__map iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: none;
  border-radius: 24px;
  filter: saturate(0.9) contrast(1.05);
}

.footer {
  padding: 32px 0;
  background: rgba(4, 24, 44, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__content {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer__link:hover {
  color: var(--color-primary-light);
}

.footer__social {
  display: flex;
  gap: 16px;
}

.footer__social-link {
  font-weight: 600;
  letter-spacing: 0.05em;
}

.footer__social-link:hover {
  color: var(--color-primary-light);
}

@media (max-width: 1200px) {
  .hero__content {
    gap: 64px;
  }

  .hero__visual {
    min-height: 500px;
  }

  .services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 1024px) {
  .hero {
    padding: 140px 0 120px;
  }

  .hero__content {
    grid-template-columns: 1fr;
    gap: 56px;
    text-align: center;
  }

  .hero__text {
    margin-inline: auto;
    justify-items: center;
  }

  .hero__meta {
    justify-content: center;
  }

  .hero__visual {
    min-height: 440px;
    max-width: 620px;
    margin-inline: auto;
  }

  .hero__badge {
    left: 50%;
    transform: translateX(-50%);
  }

  .hero__watermark {
    display: none;
  }

  .services-grid {
    gap: 28px;
  }

  .about {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 880px) {
  .nav__menu {
    position: absolute;
    top: calc(100% + 20px);
    right: 0;
    background: rgba(4, 24, 44, 0.95);
    border-radius: 20px;
    padding: 24px;
    flex-direction: column;
    min-width: 220px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: opacity var(--transition), transform var(--transition);
  }

  .nav__menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav__toggle {
    display: inline-flex;
  }

  .header__cta {
    display: none;
  }

  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contacts {
    grid-template-columns: 1fr;
  }

  .projects-intro {
    gap: 24px;
  }

  .projects-intro .btn {
    justify-self: center;
  }

}

@media (max-width: 600px) {
  .header__content {
    padding: 10px 0;
  }

  .header,
  .footer {
    padding-left: 0;
    padding-right: 0;
  }

  .header .container,
  .footer .container {
    width: 100%;
    margin-inline: 0;
    padding-inline: clamp(16px, 5vw, 24px);
  }

  .section {
    padding: 40px 0;
  }

  .section.section--services {
    padding-top: 28px;
  }

  .hero {
    padding: 84px 0 28px;
    min-height: auto;
  }

  .hero__content {
    gap: 32px;
  }

  .hero__text h1 {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
    letter-spacing: 0.08em;
  }

  .hero__lead {
    font-size: 0.98rem;
    margin-bottom: 4px;
  }

  .hero__actions {
    justify-content: center;
    margin-top: 20px;
  }

  .hero__lead,
  .hero__meta {
    margin-inline: auto;
    text-align: center;
  }

  .hero__visual {
    min-height: 320px;
  }

  .hero__badge {
    padding: 14px 20px;
    gap: 12px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    margin-top: 24px;
  }

  .service-card {
    padding: 28px 24px;
  }

  .card img {
    height: 200px;
  }

  .card__body {
    padding: 24px;
  }

  .footer__content {
    flex-direction: column;
    align-items: flex-start;
  }

  .projects-intro .btn {
    width: 100%;
  }
}

@supports (padding: max(0px, env(safe-area-inset-left))) {
  @media (max-width: 600px) {
    .header {
      padding-left: max(0px, env(safe-area-inset-left));
      padding-right: max(0px, env(safe-area-inset-right));
    }
  }
}

@media (max-width: 400px) {
  .btn {
    width: 100%;
  }

  .hero__text h1 {
    font-size: clamp(1.6rem, 8.5vw, 2rem);
    letter-spacing: 0.06em;
  }

  .hero__lead {
    font-size: 0.9rem;
  }
}