.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 32px var(--gutter);
  transition: transform 0.5s var(--ease), padding 0.4s var(--ease);
}

.header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

.header.is-hidden {
  transform: translateY(-100%);
}

.header.is-compact {
  padding-top: 16px;
  padding-bottom: 16px;
}

.header.is-compact::before {
  opacity: 1;
}

.header__logo img {
  width: 112px;
  height: auto;
  transition: width 0.4s var(--ease);
}

.header.is-compact .header__logo img {
  width: 72px;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang {
  position: relative;
}

.lang ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.lang .dropdown {
  position: relative;
}

.lang [data-toggle="dropdown"] {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 204px;
  height: 54px;
  padding: 0 32px;
  color: var(--white);
  font: 700 18px/1.2 var(--font-sans);
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}

.lang [data-toggle="dropdown"]::before,
.lang .dropdown-content::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--dark);
  filter: url(#rough-edge);
  pointer-events: none;
}

.lang .dropdown-content::before {
  filter: url(#rough-edge-alt);
}

.lang [data-toggle="dropdown"]::after {
  content: "";
  flex: none;
  width: 24px;
  height: 24px;
  background: url("../assets/drop_arrow.svg") center / contain no-repeat;
  transition: transform 0.3s var(--ease);
}

.lang.is-open [data-toggle="dropdown"]::after {
  transform: rotate(180deg);
}

.lang .dropdown-content {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: 1;
  isolation: isolate;
  display: block;
  min-width: 0;
  margin: 0;
  padding: 16px 28px;
  border: 0;
  background: none;
  box-shadow: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0s 0.25s;
}

.lang.is-open .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

.lang .dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
  background: none;
  color: var(--white);
  font: 700 18px/1.2 var(--font-sans);
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.lang .dropdown-item:hover,
.lang .dropdown-item:focus-visible {
  background: none;
  color: var(--accent);
}

.lang .dropdown-item.is-current::after {
  content: "";
  width: 16px;
  height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23666' stroke-width='1.6'%3E%3Cpath d='M3 8.5l3.2 3L13 4.5'/%3E%3C/svg%3E") center / contain no-repeat;
}

@media (max-width: 600px) {
  .header {
    padding: 16px var(--gutter);
  }

  .header__logo img {
    width: 72px;
  }

  .header.is-compact .header__logo img {
    width: 56px;
  }

  .header__logo img {
    width: 64px;
  }
}

.header__burger,
.header__nav {
  display: none;
}

@media (max-width: 900px) {
  .header__burger {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    padding: 0;
    border: 0;
    background: var(--dark);
    cursor: pointer;
  }

  .header__burger span,
  .header__burger span::before,
  .header__burger span::after {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white);
    transition: transform 0.3s var(--ease), background-color 0.2s var(--ease);
  }

  .header__burger span {
    position: relative;
  }

  .header__burger span::before,
  .header__burger span::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .header__burger span::before {
    transform: translateY(-7px);
  }

  .header__burger span::after {
    transform: translateY(7px);
  }

  .header.is-menu-open .header__burger span {
    background: transparent;
  }

  .header.is-menu-open .header__burger span::before {
    transform: rotate(45deg);
  }

  .header.is-menu-open .header__burger span::after {
    transform: rotate(-45deg);
  }

  .header__actions {
    position: fixed;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 136px 24px 24px;
    background: var(--black);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), visibility 0s 0.3s;
  }

  .header.is-menu-open .header__actions {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s var(--ease);
  }

  .header__nav {
    display: block;
    flex: 1;
    min-height: 0;
    margin-bottom: 32px;
    overflow-y: auto;
  }

  .header__nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .header__nav li + li {
    margin-top: 24px;
  }

  .header__nav a {
    color: var(--white);
    font: 500 24px/32px var(--font-sans);
    text-decoration: none;
    transition: color 0.2s var(--ease);
  }

  .header__nav a:hover,
  .header__nav a:focus-visible {
    color: var(--accent);
  }

  .header__actions .lang [data-toggle="dropdown"] {
    width: 100%;
    padding: 0 32px;
  }

  .header__actions .lang .dropdown-content {
    top: auto;
    bottom: calc(100% + 14px);
    left: 0;
    min-width: 0;
    padding: 20px 32px;
    transform: translateY(6px);
  }

  .header__actions .lang .dropdown-item {
    padding: 10px 0;
  }

  .header__actions .btn {
    justify-content: flex-start;
    width: 100%;
    padding: 0 32px;
  }

  .pagenav {
    display: none;
  }
}

@media (max-width: 600px) {
  .header {
    height: 106px;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.8) 100%);
  }

  .header__burger {
    width: 40px;
    height: 40px;
    margin-right: -6px;
    background: transparent;
    transition: background-color 0.2s var(--ease);
  }

  .header.is-menu-open .header__burger {
    width: 52px;
    height: 52px;
    margin-top: 8px;
    margin-right: 0;
    background: rgba(255, 255, 255, 0.04);
  }

  .lang [data-toggle="dropdown"]::before,
  .lang .dropdown-content::before {
    background: rgba(0, 0, 0, 0.56);
    box-shadow: inset 0 0 0 1px rgba(245, 245, 245, 0.12);
    -webkit-backdrop-filter: blur(0);
    backdrop-filter: blur(0);
  }

  .lang [data-toggle="dropdown"]::before {
    transition: -webkit-backdrop-filter 0.3s var(--ease), backdrop-filter 0.3s var(--ease);
  }

  .header.is-menu-open .lang [data-toggle="dropdown"]::before {
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    transition-delay: 0.3s;
  }

  .header__actions .lang .dropdown-content {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0s 0.25s;
  }

  .header__actions .lang.is-open .dropdown-content {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0s;
  }

  .header__actions .lang .dropdown-content::before {
    background: rgba(0, 0, 0, 0);
    box-shadow: inset 0 0 0 1px rgba(245, 245, 245, 0);
    transition: background-color 0.25s var(--ease), box-shadow 0.25s var(--ease), -webkit-backdrop-filter 0.25s var(--ease), backdrop-filter 0.25s var(--ease);
  }

  .header__actions .lang.is-open .dropdown-content::before {
    background: rgba(0, 0, 0, 0.56);
    box-shadow: inset 0 0 0 1px rgba(245, 245, 245, 0.12);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
  }

  .header__actions .lang .dropdown-content ul {
    opacity: 0;
    transition: opacity 0.25s var(--ease);
  }

  .header__actions .lang.is-open .dropdown-content ul {
    opacity: 1;
  }
}