.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-paper);
  border-bottom: 1px solid rgba(30, 30, 30, 0.2);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 4.5rem;
  padding-block: var(--space-sm);
}

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

.site-header__logo {
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-navy);
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: var(--space-xs);
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-navy);
  white-space: nowrap;
  transition: color 150ms ease-out;
}

.site-header__nav-link:hover {
  color: var(--color-faded-red);
}

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

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(30, 30, 30, 0.2);
  border-radius: var(--radius-button);
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle-line {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-navy);
  transition: transform 150ms ease-out, opacity 150ms ease-out;
}

.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-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

@media (max-width: 63.9375rem) {
  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-header__brand {
    flex: 1 1 auto;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    max-height: calc(100vh - 4.5rem);
    overflow-y: auto;
    background-color: var(--color-paper);
    border-bottom: 1px solid rgba(30, 30, 30, 0.2);
    box-shadow: var(--shadow-pinned);
    padding: var(--space-md) var(--container-padding-mobile);
    display: none;
    margin-left: 0;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
  }

  .site-header__nav-link {
    display: flex;
    width: 100%;
    min-height: 2.75rem;
    padding-inline: var(--space-sm);
    border-bottom: 1px solid rgba(30, 30, 30, 0.1);
  }

  .site-header__nav-item:last-child .site-header__nav-link {
    border-bottom: none;
  }
}

@media (min-width: 64rem) {
  .site-header__logo {
    width: 2.25rem;
    height: 2.25rem;
  }

  .site-header__brand-text {
    font-size: 0.9375rem;
  }
}