/* Header Styles */
.site-header {
  background-color: var(--color-background);
  padding: var(--spacing-4) 0;
  position: relative;
  z-index: 10;
}

.site-identity .logo-link {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--spacing-2);
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-6);
}

.nav-list a {
  color: var(--color-text);
  font-family: var(--font-family-primary);
  font-weight: 700;
  text-transform: uppercase;
  padding: var(--spacing-2);
  transition: color var(--transition-fast);
}

.nav-list a:hover, .nav-list a:focus {
  color: var(--color-primary);
}

/* Mobile Styles */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    flex-direction: column;
    padding: var(--spacing-4);
    box-shadow: var(--shadow-lg);
    gap: var(--spacing-4);
  }
  .nav-list[hidden] {
    display: none;
  }
  .nav-list:not([hidden]) {
    display: flex;
  }
}

/* Focus and Accessibility */
.menu-toggle:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}