.site-header {
  position: relative;
  z-index: 1000;
  padding: 1.25rem 0;
  background: transparent;
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-bottom: 1px solid var(--nki-teal-soft);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-branding {
  position: relative;
  z-index: 20;
}

.site-branding__link {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  color: var(--nki-dark);
  font-size: 1.65rem;
  font-weight: 800;
}

.site-branding__logo {
  max-height: 55px;
  width: auto;
  object-fit: contain;
}

.menu-toggle {
  position: relative;
  z-index: 20;
  min-width: var(--target-size-touch);
  min-height: var(--target-size-touch);
  border: 0;
  background: transparent;
  color: var(--nki-dark);
  font-size: 1.5rem;
  cursor: pointer;
}

.header-actions {
  display: none;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 20;
}

.header-actions--mobile {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  gap: 0.75rem;
  width: 100%;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--nki-teal-soft);
}

.header-actions--mobile .header-action {
  flex: 1 1 0;
  min-height: 2.75rem;
}

.header-search--mobile {
  flex: 1 1 0;
}

.header-search--mobile .header-search__toggle {
  width: 100%;
  min-height: 2.75rem;
}

.header-search--mobile .header-search__form {
  left: 0;
  right: 0;
  min-width: 100%;
}

.header-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--target-size-touch);
  min-height: var(--target-size-touch);
  padding: 0.35rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--nki-dark);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.header-action:hover,
.header-action:focus-visible {
  color: var(--nki-teal);
}

.header-action--lang:hover,
.header-action--lang:focus-visible {
  color: var(--nki-gold);
}

.header-action__flag {
  display: block;
  width: 1.6rem;
  height: auto;
  border-radius: 0.2rem;
  box-shadow: var(--shadow-sm);
  transform: scale(1.1);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.header-action__flag:hover,
.header-action__flag:focus-visible {
  transform: scale(1.2);
  box-shadow: var(--shadow-md);
}

.header-action--accessibility.is-active,
.header-action--accessibility:hover,
.header-action--accessibility:focus-visible {
  color: var(--nki-red);
}

.header-search {
  position: relative;
}

.header-search__toggle {
  position: relative;
  z-index: 2;
}

.header-search__form {
  position: absolute;
  top: calc(100% + 0.75rem);
  right: 0;
  z-index: 30;
  display: none;
  align-items: center;
  gap: 0.75rem;
  min-width: min(32rem, calc(100vw - 2rem));
  padding: 0.9rem;
  background: var(--nki-white);
  border: 1px solid var(--nki-teal-soft);
  border-radius: 1rem;
  box-shadow: var(--shadow-xl);
}

.header-search.is-open .header-search__form {
  display: flex;
}

.header-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.8rem 1rem;
  border: 1px solid var(--nki-teal-soft);
  border-radius: 999px;
  background: var(--nki-white);
  color: var(--nki-dark);
  font-size: 1rem;
}

.header-search__input::placeholder {
  color: var(--text-muted);
}

.header-search__input:focus-visible {
  outline: 2px solid var(--nki-teal);
  outline-offset: 2px;
}

.header-search__submit {
  flex: 0 0 auto;
  min-height: var(--target-size-touch);
  padding: 0.8rem 1.35rem;
  border: 1px solid var(--nki-teal);
  border-radius: 999px;
  background: var(--nki-teal);
  color: var(--nki-white);
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.header-search__submit:hover,
.header-search__submit:focus-visible {
  background: var(--nki-dark);
  border-color: var(--nki-dark);
}

.site-navigation {
  display: none;
  position: absolute;
  top: calc(100% + 1px);
  left: 0;
  width: 100%;
  padding: 1.5rem 1rem 2rem;
  background: var(--nki-white);
  border-bottom: 4px solid var(--nki-teal);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.site-navigation.is-open {
  display: block;
}

.site-navigation .menu,
.site-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-navigation>div>.menu,
.site-navigation>.menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
}

.site-navigation li {
  position: relative;
  width: 100%;
}

.site-navigation a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  width: 100%;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 1rem;
  transition: color var(--transition-fast), background-color var(--transition-fast), padding-left var(--transition-fast);
}

.site-navigation li.current-menu-item>a,
.site-navigation li.current-menu-ancestor>a,
.site-navigation a:hover,
.site-navigation a:focus-visible {
  color: var(--nki-dark);
}

.site-navigation .sub-menu {
  display: none;
  margin-top: 0.5rem;
  padding: 0.5rem 0;
  background: var(--surface-page);
  border-radius: var(--border-radius-md);
  text-align: left;
}

.site-navigation .menu-item-has-children.is-open>.sub-menu {
  display: block;
}

.site-navigation .sub-menu a {
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  text-transform: none;
  color: var(--nki-dark);
  text-align: left;
}

.menu-item-has-children>a::after {
  content: "\f078";
  font-family: "Font Awesome 7 Free";
  font-weight: 900;
  font-size: 0.7rem;
  opacity: 0.7;
}

@media (min-width: 640px) {
  .header-search__form {
    min-width: 24rem;
  }
}

@media (min-width: 960px) {
  .site-header {
    position: sticky;
    top: 0;
  }

  .menu-toggle {
    display: none;
  }

  .header-actions {
    display: flex;
  }

  .header-actions--mobile {
    display: none;
  }

  .site-navigation {
    position: absolute;
    top: 50%;
    left: 50%;
    display: block;
    width: auto;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    transform: translate(-50%, -50%);
  }

  .site-navigation>div>.menu,
  .site-navigation>.menu {
    flex-direction: row;
    gap: 2rem;
  }

  .site-navigation li {
    width: auto;
  }

  .site-navigation .menu-item-has-children {
    position: relative;
  }

  .site-navigation a {
    width: auto;
    min-height: var(--target-size-touch);
    padding: 0 0.2rem;
    justify-content: flex-start;
  }

  .site-navigation .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 210px;
    margin-top: 0;
    padding: 0.5rem 0 0.75rem;
    background: var(--nki-white);
    border-top: 3px solid var(--nki-teal);
    border-radius: 0 0 1rem 1rem;
    box-shadow: var(--shadow-xl);
  }

  .site-navigation .sub-menu .sub-menu {
    top: -0.5rem;
    left: 100%;
    margin-left: 0;
    border-top: 0;
    border-left: 3px solid var(--nki-teal);
    border-radius: 0 1rem 1rem 1rem;
  }

  .site-navigation .menu-item-has-children:hover>.sub-menu,
  .site-navigation .menu-item-has-children:focus-within>.sub-menu,
  .site-navigation .menu-item-has-children.is-open>.sub-menu {
    display: block;
  }

  .site-navigation .sub-menu a {
    justify-content: flex-start;
    width: 100%;
    padding: 0.75rem 1.5rem;
  }

  .site-navigation .sub-menu a:hover,
  .site-navigation .sub-menu a:focus-visible {
    padding-left: 2rem;
    color: var(--nki-teal);
    background: var(--nki-teal-light);
  }
}

@media (max-width: 639px) {
  .header-search--mobile {
    position: static;
  }

  .header-search__form {
    top: calc(100% + 1px);
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    align-items: stretch;
    min-width: 0;
    border-radius: var(--border-radius-sm);
  }

  .header-search__submit {
    width: 100%;
    min-height: var(--target-size-touch);
    white-space: normal;
  }
}