.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
}

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

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

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

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border: none;
  border-radius: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-h2);
  line-height: 1;
  letter-spacing: 0.02em;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  gap: var(--space-xs);
  background: transparent;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle:hover {
  background: transparent;
  border: none;
}

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

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

.site-header__toggle:hover .site-header__toggle-line {
  background-color: var(--color-accent-secondary);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(6px) 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(-6px) rotate(-45deg);
}

.site-header__nav {
  display: block;
  flex-shrink: 1;
  min-width: 0;
}

.site-header__menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none !important;
  margin: 0;
  padding: 0;
}

.site-header__menu li {
  margin: 0;
  padding: 0;
  line-height: 1;
}

.site-header__menu li + li {
  margin: 0;
}

.site-header__link {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-h2);
  line-height: 1;
  color: var(--color-text-primary);
  text-decoration: none;
  padding-block: var(--space-xs);
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-header__link:hover {
  color: var(--color-accent-secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.site-header__link--cta {
  background-color: var(--color-text-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-small);
  padding: var(--space-sm) var(--space-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__link--cta:hover {
  background-color: var(--color-accent);
  color: var(--color-text-primary);
  text-decoration: none;
}

@media (max-width: 900px) {
  .site-header__inner {
    flex-wrap: wrap;
    min-height: 64px;
    padding-block: var(--space-sm);
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    display: none;
    width: 100%;
    order: 3;
    flex-basis: 100%;
  }

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

  .site-header__menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: var(--space-md);
    border-top: 1px solid var(--color-border);
  }

  .site-header__menu li {
    margin: 0;
  }

  .site-header__link {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-body);
    white-space: normal;
  }

  .site-header__link--cta {
    margin: var(--space-sm) var(--space-md) 0;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .site-header__logo {
    width: 36px;
    height: 36px;
  }

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