.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--surface-page);
  border-bottom: 1px solid var(--color-cashmere-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding-block: var(--space-3);
}

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

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

.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-cypress-green);
  white-space: nowrap;
}

.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;
  flex-shrink: 0;
}

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

.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-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-cypress-green);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-default);
}

.site-header__nav-link:hover {
  color: var(--color-desert-brass);
  text-decoration: underline;
  text-decoration-color: var(--color-desert-brass);
  text-underline-offset: 3px;
}

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

@media (max-width: 991px) {
  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--surface-page);
    padding: var(--space-5);
    overflow-y: auto;
    display: none;
    z-index: 999;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .site-header__nav-item {
    width: 100%;
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-3) var(--space-2);
    font-size: 1.125rem;
    border-bottom: 1px solid var(--color-cashmere-border);
  }

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

@media (min-width: 992px) {
  .site-header__nav {
    display: block;
  }
}