.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-linen);
  border-bottom: var(--border-width) solid var(--border-color);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-3) var(--container-padding-mobile);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-ink);
  min-width: 0;
}

.site-header__brand:hover {
  color: var(--color-ink);
}

.site-header__logo {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border: none;
  border-radius: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: var(--color-linen-dark);
}

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

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: 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__nav {
  display: block;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-2) 0;
  font-size: var(--text-body);
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  transition: color var(--transition-fast);
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-raspberry);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

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

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

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

@media (max-width: 767px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding: var(--space-3) var(--container-padding-mobile);
  }

  .site-header__brand {
    flex: 1 1 auto;
    min-width: 0;
  }

  .site-header__logo {
    width: 32px;
    height: 32px;
  }

  .site-header__brand-text {
    font-size: var(--text-h4);
  }

  .site-header__toggle {
    display: flex;
    flex: 0 0 auto;
  }

  .site-header__nav {
    display: none;
    flex-basis: 100%;
    width: 100%;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3) 0;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

  .site-header__nav-item {
    border-bottom: var(--border-width) solid var(--border-color);
  }

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

  .site-header__nav-link {
    display: block;
    padding: var(--space-3) var(--space-2);
    font-size: var(--text-body-large);
  }

  .site-header__nav-link::after {
    display: none;
  }
}

@media (min-width: 768px) {
  .site-header__inner {
    padding: var(--space-3) var(--container-padding-desktop);
  }

  .site-header__logo {
    width: 48px;
    height: 48px;
  }

  .site-header__toggle {
    display: none;
  }
}