.site-header {
  --header-bg: var(--color-paper);
  --header-border: var(--border-editorial);
  --header-height: 72px;
  --header-gutter: var(--container-gutter);
  --header-z: 100;
  --header-transition: var(--transition-fast);

  position: relative;
  z-index: var(--header-z);
  background-color: var(--header-bg);
  border-block-end: var(--header-border);
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-height);
  padding-inline: var(--header-gutter);
  max-width: var(--container-max);
  margin-inline: auto;
}

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

.site-header__brand:hover {
  color: var(--color-ink);
  text-decoration: none;
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.site-header__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.site-header__wordmark {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  align-items: center;
  min-width: 0;
}

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

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

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

.site-header__item {
  margin: 0;
  padding: 0;
}

.site-header__item + .site-header__item {
  margin-inline-start: 0;
}

.site-header__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-2) 0;
  font-size: var(--text-body-size);
  line-height: 1.2;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--header-transition);
}

.site-header__link:hover {
  color: var(--color-sage);
  text-decoration: underline;
  text-decoration-color: var(--color-sage);
  text-underline-offset: 3px;
}

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

.site-header__link--contact {
  font-weight: 600;
}

.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;
  position: relative;
  z-index: 1;
}

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.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);
  outline-offset: var(--focus-offset);
}

.site-header__mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-paper);
  border-block-end: var(--border-editorial);
  box-shadow: 0 8px 16px rgba(62, 44, 35, 0.08);
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  z-index: 99;
}

.site-header__mobile-nav.is-open {
  display: block;
}

.site-header__mobile-nav-inner {
  padding: var(--space-3) var(--header-gutter) var(--space-5);
  max-width: var(--container-max);
  margin-inline: auto;
}

.site-header__mobile-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

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

.site-header__mobile-link {
  display: block;
  padding: var(--space-2) 0;
  font-size: 1.125rem;
  line-height: 1.4;
  color: var(--color-ink);
  text-decoration: none;
  border-block-end: 1px solid var(--color-sand);
  transition: color var(--header-transition), padding-inline-start var(--header-transition);
}

.site-header__mobile-link:hover {
  color: var(--color-sage);
  padding-inline-start: var(--space-2);
}

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

@media (max-width: 900px) {
  .site-header__inner {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-2);
  }

  .site-header__nav {
    display: none;
  }

  .site-header__toggle {
    display: flex;
  }

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

  .site-header__wordmark {
    font-size: 1.25rem;
  }

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

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

  .site-header__wordmark {
    font-size: 1.125rem;
  }

  .site-header__logo {
    width: 28px;
    height: 28px;
  }
}

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