.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-teal-dark);
  border-bottom: var(--border-mineral);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
  height: 64px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  flex-shrink: 0;
  min-width: 0;
}

.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: var(--text-body-s);
  line-height: 1.1;
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
  color: var(--color-off-white);
  white-space: nowrap;
}

.site-header__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-mineral-grey);
  border-radius: var(--radius-4);
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-off-white);
  transition: background-color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__toggle:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
}

.site-header__nav {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  width: 100%;
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  background-color: var(--color-teal-dark);
  border-bottom: var(--border-mineral);
  padding: var(--space-16) var(--container-padding-mobile) var(--space-24);
}

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

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.site-header__nav-item {
  margin: 0;
}

.site-header__nav-link {
  display: block;
  padding: var(--space-12) var(--space-16);
  font-family: var(--font-heading);
  font-size: var(--text-body-m);
  line-height: 1.2;
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
  color: var(--color-off-white);
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-coral-action);
  border-left-color: var(--color-coral-action);
  background-color: rgba(28, 90, 82, 0.2);
}

.site-header__nav-link:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
}

@media (min-width: 1024px) {
  .site-header__inner {
    height: 72px;
    padding-inline: var(--container-padding-desktop);
  }

  .site-header__logo {
    width: 44px;
    height: 44px;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: block;
    position: static;
    width: auto;
    max-height: none;
    overflow: visible;
    background: transparent;
    border: none;
    padding: 0;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-24);
  }

  .site-header__nav-link {
    padding: var(--space-8) 0;
    font-size: var(--text-body-s);
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .site-header__nav-link:hover,
  .site-header__nav-link:focus-visible {
    border-left: none;
    border-bottom-color: var(--color-coral-action);
    background: transparent;
  }
}

@media (max-width: 1023px) {
  .site-header__nav.is-open {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-line {
    transition: none;
  }
}