.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  width: 100%;
  border-bottom: 1px solid var(--color-matte-charcoal);
  background: var(--color-obsidian);
}

.site-header__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  min-height: 4.75rem;
  width: min(100%, var(--container-max));
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.site-header__nav,
.site-header__actions,
.site-header__brand {
  min-width: 0;
}

.site-header__list,
.site-header__mobile-list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.8vw, 1.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.site-header__nav--primary {
  justify-self: start;
}

.site-header__nav--secondary {
  justify-self: end;
}

.site-header__list a,
.site-header__mobile-list a {
  display: block;
  color: var(--color-soft-white);
  font-size: var(--text-meta);
  font-weight: 600;
  letter-spacing: var(--tracking-meta);
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__list a:hover,
.site-header__list a:focus-visible,
.site-header__mobile-list a:hover,
.site-header__mobile-list a:focus-visible {
  color: var(--color-snow-white);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28em;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  justify-self: center;
  gap: 0.625rem;
  color: var(--color-snow-white);
  text-decoration: none;
  white-space: nowrap;
}

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

.site-header__brand-text {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}

.site-header__actions {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: clamp(0.625rem, 1.5vw, 1.25rem);
}

.site-header__contact {
  min-height: 2.5rem;
  padding-inline: 0.75rem;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  position: relative;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.625rem;
  border: 1px solid var(--color-snow-white);
  color: var(--color-snow-white);
}

.site-header__toggle-line {
  display: block;
  width: 100%;
  height: 1px;
  margin-block: 0.25rem;
  background: currentColor;
  transform-origin: center;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.3125rem) 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(-0.3125rem) rotate(-45deg);
}

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

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

@media (max-width: 900px) {
  .site-header__inner {
    grid-template-columns: 1fr auto 1fr;
    min-height: 4.25rem;
  }

  .site-header__nav--primary,
  .site-header__nav--secondary,
  .site-header__contact {
    display: none;
  }

  .site-header__actions {
    justify-self: end;
  }

  .site-header__toggle {
    display: block;
  }

  .site-header__mobile-nav {
    position: absolute;
    z-index: 1;
    top: 100%;
    right: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 4.25rem);
    padding: var(--space-6) var(--container-padding) var(--space-7);
    overflow-y: auto;
    border-top: 1px solid var(--color-matte-charcoal);
    border-bottom: 1px solid var(--color-matte-charcoal);
    background: var(--color-obsidian);
  }

  .site-header__mobile-nav[hidden] {
    display: none !important;
  }

  .site-header__mobile-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--color-matte-charcoal);
  }

  .site-header__mobile-list li {
    border-bottom: 1px solid var(--color-matte-charcoal);
  }

  .site-header__mobile-list a {
    min-height: 3.25rem;
    padding-block: 0.9375rem;
    font-size: var(--text-utility);
    white-space: normal;
  }

  .site-header__mobile-contact {
    width: 100%;
    margin-top: var(--space-5);
  }
}

@media (max-width: 500px) {
  .site-header__inner {
    min-height: 4rem;
  }

  .site-header__mark {
    flex-basis: 1.875rem;
    width: 1.875rem;
    height: 1.875rem;
  }

  .site-header__brand {
    gap: 0.5rem;
  }

  .site-header__brand-text {
    font-size: 0.6875rem;
  }

  .site-header__mobile-nav {
    max-height: calc(100vh - 4rem);
  }
}

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