.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-linen);
  border-bottom: 1px solid var(--color-border-default);
  height: var(--header-height-mobile);
  display: flex;
  align-items: center;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-basalt);
  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: 1.0625rem;
  font-weight: 500;
  letter-spacing: var(--tracking-h4);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.site-header__toggle:hover {
  border-color: var(--color-border-hover);
  background-color: var(--color-sandstone);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 2px;
}

.site-header__toggle-line {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-basalt);
  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: none;
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-linen);
  z-index: 999;
  overflow-y: auto;
  padding: var(--space-lg) var(--container-padding-mobile) var(--space-2xl);
  box-shadow: var(--color-shadow-modal);
}

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

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

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

.site-header__nav-link {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-body-large);
  font-weight: 500;
  line-height: var(--leading-body-large);
  color: var(--color-basalt);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__nav-link:hover {
  background-color: var(--color-sandstone);
  color: var(--color-terracotta);
}

.site-header__nav-link:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 2px;
}

.site-header__address {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-default);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.site-header__address-label {
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
  color: var(--color-slate);
}

.site-header__address-text {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  color: var(--color-slate);
}

@media (min-width: 64rem) {
  .site-header {
    height: var(--header-height-desktop);
  }

  .site-header__logo {
    width: 3rem;
    height: 3rem;
  }

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

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: flex;
    position: static;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    background: transparent;
    z-index: auto;
    overflow: visible;
    padding: 0;
    box-shadow: none;
    align-items: center;
    gap: var(--space-lg);
    flex: 1;
    justify-content: flex-end;
  }

  .site-header__nav-list {
    flex-direction: row;
    gap: var(--space-lg);
    align-items: center;
  }

  .site-header__nav-link {
    font-size: var(--text-small);
    font-weight: 500;
    line-height: var(--leading-small);
    padding: var(--space-xs) var(--space-sm);
    white-space: nowrap;
  }

  .site-header__address {
    display: none;
  }
}

@media (min-width: 48rem) and (max-width: 63.9375rem) {
  .site-header__brand-text {
    font-size: 1.125rem;
  }

  .site-header__logo {
    width: 2.75rem;
    height: 2.75rem;
  }
}

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