.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-cream);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 72px;
  padding-block: var(--space-sm);
}

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

.site-header__brand:hover,
.site-header__brand:focus-visible {
  color: var(--color-terracotta-dark);
  text-decoration: none;
}

.site-header__logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.2;
  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;
  border-radius: var(--radius-md);
  background-color: transparent;
  color: var(--color-ink);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__toggle:hover,
.site-header__toggle:focus-visible {
  background-color: var(--color-cream-deep);
  color: var(--color-terracotta-dark);
}

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  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: flex;
  align-items: center;
  flex-shrink: 1;
  min-width: 0;
}

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

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

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-xs) 0;
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-terracotta-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-terracotta);
  text-underline-offset: 0.2em;
}

@media (max-width: 1023px) {
  .site-header__inner {
    min-height: 64px;
  }

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

  .site-header__brand-text {
    font-size: 1.25rem;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
    display: block;
    background-color: var(--color-cream);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    max-height: calc(100vh - 100%);
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: visibility var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
  }

  .site-header__nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-sm) var(--container-pad);
  }

  .site-header__nav-item {
    flex-shrink: 1;
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-sm) 0;
    font-size: 1.125rem;
    border-bottom: 1px solid var(--color-border);
  }

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

@media (max-width: 480px) {
  .site-header__inner {
    min-height: 56px;
    gap: var(--space-sm);
  }

  .site-header__logo {
    width: 40px;
    height: 40px;
  }

  .site-header__brand-text {
    font-size: 1.125rem;
  }

  .site-header__toggle {
    width: 40px;
    height: 40px;
  }
}