.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-cream);
  border-bottom: var(--border-thin) solid var(--color-bronze-15);
  transition: box-shadow var(--transition-fast);
}

.site-header[data-scrolled="true"] {
  box-shadow: var(--shadow-soft);
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  min-height: 80px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-charcoal);
  justify-self: center;
  min-width: 0;
}

.site-header__brand:hover {
  opacity: 0.8;
}

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav--left .site-header__nav-list {
  justify-content: flex-start;
}

.site-header__nav--right .site-header__nav-list {
  justify-content: flex-end;
}

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

.site-header__nav-link {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-charcoal);
  text-decoration: none;
  padding-block: var(--space-2);
  white-space: nowrap;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-copper);
  opacity: 1;
}

.site-header__nav-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  justify-self: end;
}

.site-header__toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-charcoal);
  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__mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 100vw);
  max-width: 100%;
  background-color: var(--color-cream);
  z-index: 1001;
  overflow-y: auto;
  padding: var(--space-6) var(--space-4);
  box-shadow: var(--shadow-diffuse);
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
}

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

.site-header__mobile-nav.is-open {
  transform: translateX(0);
}

.site-header__mobile-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

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

.site-header__mobile-link {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-charcoal);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__mobile-link:hover {
  background-color: var(--color-cream-dark);
  color: var(--color-copper);
}

.site-header__mobile-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

@media (max-width: 1024px) {
  .site-header__inner {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-3);
  }

  .site-header__brand {
    justify-self: start;
  }

  .site-header__nav--left,
  .site-header__nav--right {
    display: none;
  }

  .site-header__toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  .site-header__inner {
    min-height: 64px;
    padding-inline: var(--space-3);
  }

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

  .site-header__brand-name {
    font-size: var(--text-h3);
  }
}