.site-header {
  position: relative;
  z-index: 900;
  min-height: 4.5rem;
  background: var(--color-midnight);
  color: var(--color-porcelain);
}

.site-header__bar {
  border-bottom: 1px solid rgb(185 203 209 / 35%);
  background: var(--color-midnight);
}

.site-header__inner {
  display: flex;
  min-width: 0;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-porcelain);
  text-decoration: none;
}

.site-header__logo {
  width: 2.125rem;
  height: 2.125rem;
  flex: 0 0 2.125rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.0625rem;
}

.site-header__brand-copy strong {
  overflow: hidden;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 0.9;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-header__brand-copy small {
  overflow: hidden;
  color: var(--color-pale-steel);
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.055em;
  line-height: 1.2;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__toggle {
  display: inline-flex;
  min-width: 4.5rem;
  min-height: 2.75rem;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 0.75rem;
  border: 1px solid rgb(220 232 236 / 65%);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-porcelain);
  font-size: 0.75rem;
}

.site-header__toggle:hover,
.site-header__toggle[aria-expanded="true"] {
  border-color: var(--color-marine-teal);
  background: var(--color-deep-teal);
}

.site-header__toggle-lines {
  display: grid;
  width: 1rem;
  gap: 0.1875rem;
}

.site-header__toggle-lines i {
  display: block;
  width: 100%;
  height: 1px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-lines i:nth-child(1) {
  transform: translateY(0.25rem) rotate(45deg);
}

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

.site-header__toggle[aria-expanded="true"] .site-header__toggle-lines i:nth-child(3) {
  transform: translateY(-0.25rem) rotate(-45deg);
}

.site-header__navigation {
  position: absolute;
  top: 100%;
  right: var(--gutter);
  left: var(--gutter);
  display: none;
  max-height: calc(100vh - 4.5rem);
  overflow-y: auto;
  border: 1px solid var(--color-line-steel);
  border-top: 3px solid var(--color-marine-teal);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: var(--color-paper);
  box-shadow: var(--shadow-floating);
}

.site-header__navigation--open {
  display: block;
}

.site-header__nav-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: var(--space-2);
  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;
  padding: 0.625rem var(--space-3);
  border-bottom: 1px solid rgb(185 203 209 / 55%);
  color: var(--color-midnight);
  font-size: var(--text-nav);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.1;
  text-decoration: none;
}

.site-header__nav-list li:last-child a {
  border-bottom: 0;
}

.site-header__nav-list a:hover,
.site-header__nav-list a[aria-current="page"] {
  background: var(--color-pale-steel);
  box-shadow: inset 0 -2px 0 var(--color-marine-teal);
  color: var(--color-deep-teal);
}

.site-header-menu-open {
  overflow: hidden;
}

@media (min-width: 70rem) {
  .site-header {
    min-height: 4.75rem;
  }

  .site-header__inner {
    min-height: 4.75rem;
    gap: var(--space-5);
  }

  .site-header__brand {
    flex: 0 0 auto;
    gap: var(--space-3);
  }

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

  .site-header__brand-copy strong {
    font-size: 1.6rem;
  }

  .site-header__brand-copy small {
    font-size: 0.59375rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__navigation {
    position: static;
    display: block;
    max-height: none;
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-header__nav-list {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
  }

  .site-header__nav-list a {
    min-height: 2.75rem;
    align-items: center;
    padding: 0.625rem 0.5rem;
    border: 0;
    color: var(--color-porcelain);
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .site-header__nav-list a:hover,
  .site-header__nav-list a[aria-current="page"] {
    background: rgb(220 232 236 / 12%);
    box-shadow: inset 0 -2px 0 var(--color-marine-teal);
    color: var(--color-paper);
  }

  .site-header__nav-contact a {
    margin-left: var(--space-2);
    border: 1px solid rgb(220 232 236 / 65%);
    border-radius: var(--radius-sm);
    background: var(--color-deep-teal);
  }

  .site-header__nav-contact a:hover {
    border-color: var(--color-marine-teal);
    background: var(--color-marine-teal);
    box-shadow: none;
  }
}

@media (min-width: 80rem) {
  .site-header__nav-list {
    gap: var(--space-2);
  }

  .site-header__nav-list a {
    padding-inline: 0.625rem;
    font-size: var(--text-nav);
  }
}

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