) => refreshRobustaLogo(true);
    document.getElementById('__palette_2').onclick = () => refreshRobustaLogo(false);

    // Back to top button functionality
    const backToTopButton = document.querySelector('.back-to-top');
    
    // Show button when page is scrolled down
    window.addEventListener('scroll', function() {
      if (window.pageYOffset > 300) {
        backToTopButton.classList.add('visible');
      } else {
        backToTopButton.classList.remove('visible');
      }
    });
    
    // 