.site-header {
  position: relative;
  z-index: 20;
  background: var(--color-pearl-white);
  border-bottom: 1px solid var(--color-line-aqua);
}

.site-header__bar {
  min-height: 4.75rem;
}

.site-header__inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  gap: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-deep-marine);
  line-height: 1;
  text-decoration: none;
}

.site-header__brand:hover {
  color: var(--color-deep-marine);
  text-decoration: none;
}

.site-header__logo {
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
  object-fit: contain;
}

.site-header__brand-text {
  min-width: 0;
  max-width: 24rem;
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.site-header__brand-text strong {
  font-weight: 700;
}

.site-header__toggle {
  display: inline-flex;
  width: 2.75rem;
  min-height: 2.75rem;
  flex: 0 0 2.75rem;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  border: 1px solid var(--color-harbour-blue);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-harbour-blue);
}

.site-header__toggle-line {
  display: block;
  width: 1.125rem;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.375rem) 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(-0.375rem) rotate(-45deg);
}

.site-header__nav {
  position: absolute;
  z-index: 21;
  top: 100%;
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100vh - 4.75rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top: 1px solid var(--color-line-aqua);
  border-bottom: 1px solid var(--color-line-aqua);
  background: var(--color-pearl-white);
  box-shadow: var(--shadow-floating);
}

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

.site-header__nav-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: var(--space-2) var(--gutter) var(--space-4);
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li {
  margin: 0;
  padding: 0;
}

.site-header__nav-list a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  border-bottom: 1px solid var(--color-line-aqua);
  color: var(--color-deep-marine);
  font-size: var(--font-size-label);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
}

.site-header__nav-list a::after {
  margin-left: auto;
  color: var(--color-harbour-blue);
  content: "→";
}

.site-header__contact {
  display: none;
}

html.has-site-menu-open,
html.has-site-menu-open body {
  overflow: hidden;
}

@media (min-width: 64rem) {
  .site-header__bar,
  .site-header__inner {
    min-height: 5rem;
  }

  .site-header__inner {
    gap: var(--space-5);
  }

  .site-header__brand {
    flex: 0 0 auto;
  }

  .site-header__logo {
    width: 2.5rem;
    height: 2.5rem;
    flex-basis: 2.5rem;
  }

  .site-header__brand-text {
    font-size: 1.375rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    display: block;
    min-width: 0;
    max-height: none;
    flex: 1 1 auto;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-header__nav-list {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: clamp(0.75rem, 1.4vw, 1.5rem);
    padding: 0;
  }

  .site-header__nav-list a {
    min-height: 5rem;
    border: 0;
    color: var(--color-deep-marine);
    font-size: 0.625rem;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }

  .site-header__nav-list a::after {
    display: none;
  }

  .site-header__nav-list a:hover,
  .site-header__nav-list a[aria-current="page"] {
    color: var(--color-harbour-blue);
  }

  .site-header__mobile-only {
    display: none;
  }

  .site-header__contact {
    display: inline-flex;
    min-height: 2.75rem;
    flex: 0 0 auto;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid var(--color-harbour-blue);
    border-radius: var(--radius-control);
    color: var(--color-harbour-blue);
    padding: 0.6875rem 0.875rem;
    font-size: var(--font-size-label);
    font-weight: 700;
    letter-spacing: 0.1em;
    line-height: 1.2;
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  }

  .site-header__contact:hover {
    transform: translateY(2px);
    background: var(--color-harbour-blue);
    color: var(--color-pearl-white);
    text-decoration: none;
  }
}