.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

[data-theme="light"] .site-nav {
  background: rgba(248, 248, 252, 0.85);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.nav-logo:hover {
  color: var(--color-accent-primary);
}

.nav-logo span {
  color: var(--color-accent-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
}

.nav-link.active {
  color: var(--color-accent-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
}

.nav-social-link {
  padding: var(--space-2);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav-social-link:hover {
  color: var(--color-text-primary);
}

.hamburger {
  display: none;
  padding: var(--space-2);
  color: var(--color-text-primary);
}

/* Mobile Nav */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-6);
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    overflow-y: auto;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: var(--space-4) var(--space-3);
    font-size: var(--text-lg);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-actions {
    display: none;
  }

  .nav-links.open ~ .nav-actions,
  .mobile-nav-actions {
    display: flex;
  }
}