.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  pointer-events: none;
}

.site-header * {
  pointer-events: auto;
}

.header-shell {
  position: relative;
  height: var(--header-expanded);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.96), rgba(21, 26, 31, 0.92));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: height 0.62s var(--ease-smooth), background 0.62s var(--ease-smooth), border-color 0.62s var(--ease-smooth);
}

.site-header.is-collapsed:not(.is-hovered):not(.menu-open) .header-shell {
  height: var(--header-collapsed);
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.98), rgba(17, 20, 24, 0.94));
}

.header-utility,
.header-nav-row {
  position: absolute;
  inset-inline: 0;
  transition: opacity 0.56s var(--ease-smooth), transform 0.56s var(--ease-smooth), visibility 0.56s var(--ease-smooth);
}

.header-utility {
  top: 0;
  height: var(--header-utility-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-nav-row {
  top: var(--header-utility-height);
  height: var(--header-nav-height);
}

.site-header.is-collapsed:not(.is-hovered):not(.menu-open) .header-utility,
.site-header.is-collapsed:not(.is-hovered):not(.menu-open) .header-nav-row {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-14px);
}

.utility-grid {
  height: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 20px;
}

.utility-left,
.utility-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.utility-right {
  justify-content: flex-end;
}

.brand-mark {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: var(--header-collapsed);
  height: var(--header-collapsed);
  display: grid;
  place-items: center;
  color: #ffffff;
  text-align: center;
  z-index: 10;
}

.brand-mark img {
  width: 41px;
  height: 41px;
  display: block;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.96;
}

.lang-link,
.utility-link {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: color 0.36s var(--ease-smooth), opacity 0.36s var(--ease-smooth);
}

.lang-link:hover,
.utility-link:hover,
.lang-link.is-active {
  color: #ffffff;
}

.lang-link.is-active {
  position: relative;
}

.lang-link.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: var(--accent);
}

.nav-row-inner {
  height: 100%;
}

.main-nav {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: center;
  height: 100%;
}

.nav-trigger {
  position: relative;
  width: 100%;
  height: 100%;
  color: rgba(255, 255, 255, 0.94);
  font-size: 0.96rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-align: center;
  text-transform: uppercase;
  transition: color 0.36s var(--ease-smooth), opacity 0.36s var(--ease-smooth);
}

.nav-trigger::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 10px;
  width: 0;
  height: 2px;
  transform: translateX(-50%);
  background: var(--accent);
  transition: width 0.42s var(--ease-smooth);
}

.nav-trigger:hover,
.nav-trigger.is-active {
  color: #ffffff;
}

.nav-trigger:hover::after,
.nav-trigger.is-active::after {
  width: 72px;
}

.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 5;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(8, 10, 12, 0.98), rgba(16, 19, 23, 0.98));
  transition: opacity 0.52s var(--ease-smooth), visibility 0.52s var(--ease-smooth);
}

.site-header.menu-open .menu-overlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.menu-overlay-inner {
  min-height: 100vh;
  padding-top: calc(var(--header-expanded) + 26px);
  padding-bottom: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.overlay-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 36px;
  align-items: start;
}

.overlay-column {
  opacity: 0;
  transform: translateY(-22px);
  transition: opacity 0.62s var(--ease-smooth), transform 0.62s var(--ease-smooth);
  transition-delay: var(--delay, 0ms);
}

.site-header.menu-open .overlay-column {
  opacity: 0.64;
  transform: translateY(0);
}

.site-header.menu-open .overlay-column.is-active {
  opacity: 1;
}

.overlay-title {
  display: block;
  position: relative;
  margin: 0 0 18px;
  padding: 0 0 12px;
  color: #ffffff;
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.overlay-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.42s var(--ease-smooth);
}

.overlay-column.is-active .overlay-title::after {
  width: 72px;
}

.overlay-menu,
.overlay-submenu {
  list-style: none;
}

.overlay-menu {
  display: grid;
  gap: 16px;
}

.overlay-leaf a,
.overlay-branch-toggle,
.overlay-submenu a {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.98rem;
  text-decoration: none;
}

.overlay-leaf a,
.overlay-submenu a {
  display: inline-flex;
}

.overlay-leaf a:hover,
.overlay-submenu a:hover {
  color: #ffffff;
}

.overlay-branch-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: left;
}

.overlay-caret {
  font-size: 0.92rem;
  transition: transform 0.42s var(--ease-smooth);
}

.overlay-branch.is-open .overlay-caret {
  transform: rotate(180deg);
}

.overlay-submenu {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-8px);
  padding-left: 16px;
  display: grid;
  gap: 10px;
  transition: max-height 0.56s var(--ease-smooth), opacity 0.4s var(--ease-smooth), transform 0.4s var(--ease-smooth), margin-top 0.4s var(--ease-smooth);
}

.overlay-branch.is-open .overlay-submenu {
  max-height: 280px;
  margin-top: 10px;
  opacity: 1;
  transform: translateY(0);
}

.overlay-close-wrap {
  display: flex;
  justify-content: center;
  padding-top: 28px;
}

.overlay-close {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.95rem;
  font-weight: 600;
}

.mobile-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.mobile-menu {
  display: none;
}

@media (max-width: 1280px) {
  .overlay-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (max-width: 980px) {
  .header-shell {
    height: var(--header-collapsed) !important;
  }

  .header-utility {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    border-bottom: 0;
  }

  .header-nav-row,
  .menu-overlay,
  .utility-left {
    display: none;
  }

  .utility-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .utility-right {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .utility-link {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
  }

  .mobile-menu-toggle {
    display: inline-grid;
    place-items: center;
    order: -1;
    justify-self: start;
    flex-shrink: 0;
  }

  .mobile-menu {
    position: absolute;
    top: calc(var(--header-collapsed) + 10px);
    left: 12px;
    right: 12px;
    display: grid;
    gap: 8px;
    padding: 14px;
    background: rgba(12, 15, 18, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.4s var(--ease-smooth), transform 0.4s var(--ease-smooth), visibility 0.4s var(--ease-smooth);
  }

  .mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-menu a {
    padding: 12px 10px;
    color: rgba(255, 255, 255, 0.82);
    border-radius: 12px;
  }

  .mobile-menu a:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
  }
}

.site-header.is-collapsed.is-hovered .header-shell,
.site-header.menu-open .header-shell {
  height: var(--header-expanded);
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.96), rgba(21, 26, 31, 0.92));
}
.site-header.is-collapsed.is-hovered .header-utility,
.site-header.is-collapsed.is-hovered .header-nav-row,
.site-header.menu-open .header-utility,
.site-header.menu-open .header-nav-row {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-brand-logo {
  width: auto;
  height: 50px;
  display: block;
  object-fit: contain;
}

.footer-brand span {
  display: inline-block;
}

@media (max-width: 980px) {
  .brand-mark img {
    width: 44px;
    height: 44px;
  }
}
.overlay-grid { align-content: start; }
@media (max-width: 980px) {
  .site-header { pointer-events: auto; }
}