.menu-toggle,
.menu-backdrop,
.mobile-menu {
  display: none;
}

.site-header {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 50%;
  margin-inline: 0;
  transform: translateX(-50%);
  transition: transform .36s cubic-bezier(.22, 1, .36, 1);
}

.site-header::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  opacity: 0;
  background: rgba(10, 10, 10, .38);
  backdrop-filter: blur(18px) saturate(115%);
  -webkit-backdrop-filter: blur(18px) saturate(115%);
  transition: opacity .28s ease;
  pointer-events: none;
}

.site-header.has-light-background::before {
  opacity: 1;
}

.hero::after {
  background: none;
}

.site-header > .main-nav {
  color: #d8d8d8;
}

.site-header > .main-nav a,
.site-header > .header-contacts > a:not(.pill) {
  text-shadow: none;
}

.site-header.is-hidden:not(.menu-open) {
  transform: translate(-50%, -120%);
}

.site-header.menu-open {
  transform: translate(-50%, 0);
}

body.has-fixed-header > .hero {
  padding-top: 126px;
}

body.has-fixed-header > main.case-shell {
  padding-top: 126px;
}

@media (max-width: 1360px) {
  body.menu-open {
    overflow: hidden;
  }

  .site-header {
    width: min(var(--shell), calc(100% - 48px));
    max-width: var(--shell);
    grid-template-columns: auto 1fr auto;
  }

  .site-header::before {
    display: none;
  }

  .site-header .brand {
    transition: opacity .24s ease, transform .24s ease;
  }

  .site-header.is-scrolled:not(.menu-open) {
    pointer-events: none;
  }

  .site-header.is-scrolled:not(.menu-open) .brand {
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
  }

  .site-header > .main-nav,
  .site-header > .header-contacts {
    display: none;
  }

  .menu-toggle {
    position: relative;
    z-index: 33;
    grid-column: 3;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 1px solid #3a3a3a;
    border-radius: 50%;
    display: grid;
    place-items: center;
    justify-self: end;
    background: #111b;
    color: #fff;
    cursor: pointer;
    pointer-events: auto;
  }

  .menu-toggle span {
    position: absolute;
    width: 20px;
    height: 1px;
    background: currentColor;
    transition: transform .25s ease, top .25s ease;
  }

  .menu-toggle span:first-child { top: 19px; }
  .menu-toggle span:last-child { top: 27px; }

  .site-header.menu-open .menu-toggle span:first-child {
    top: 23px;
    transform: rotate(45deg);
  }

  .site-header.menu-open .menu-toggle span:last-child {
    top: 23px;
    transform: rotate(-45deg);
  }

  .menu-backdrop {
    position: fixed;
    z-index: 30;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    display: block;
    visibility: hidden;
    opacity: 0;
    background: #000a;
    cursor: pointer;
    transition: opacity .3s ease, visibility .3s ease;
  }

  .mobile-menu {
    position: fixed;
    z-index: 31;
    inset: 0 0 0 auto;
    width: min(420px, 100%);
    height: 100dvh;
    padding: 116px 34px 34px;
    display: flex;
    visibility: hidden;
    flex-direction: column;
    overflow-y: auto;
    background: #0c0c0c;
    transform: translateX(100%);
    transition: transform .38s cubic-bezier(.22, 1, .36, 1), visibility .38s ease;
  }

  body.menu-open .menu-backdrop {
    visibility: visible;
    opacity: 1;
  }

  body.menu-open .mobile-menu {
    visibility: visible;
    transform: translateX(0);
  }

  .mobile-menu nav {
    display: grid;
    gap: 4px;
  }

  .mobile-menu nav a {
    padding: 10px 0;
    color: #8e8e8e;
    font-size: 30px;
    line-height: 1.1;
    letter-spacing: -.04em;
    white-space: nowrap;
  }

  .mobile-menu nav a:hover,
  .mobile-menu nav .is-active {
    color: #fff;
  }

  .mobile-menu-contacts {
    margin-top: auto;
    padding-top: 50px;
    display: grid;
    gap: 10px;
    color: #858585;
    font-size: 14px;
  }

  .mobile-menu-cta {
    width: 100%;
    margin-top: 24px;
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 92px;
  }

  body.has-fixed-header > .hero {
    padding-top: 92px;
  }

  body.has-fixed-header > main.case-shell {
    padding-top: 92px;
  }
}

@media (max-width: 540px) {
  .site-header {
    width: calc(100% - 28px);
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
  }

  .menu-toggle span:first-child { top: 16px; }
  .menu-toggle span:last-child { top: 24px; }
  .site-header.menu-open .menu-toggle span:first-child,
  .site-header.menu-open .menu-toggle span:last-child { top: 20px; }

  .mobile-menu {
    padding: 104px 22px 26px;
  }

  .mobile-menu nav a {
    font-size: 27px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .site-header::before,
  .site-header .brand,
  .menu-toggle span,
  .menu-backdrop,
  .mobile-menu {
    transition: none;
  }
}