document.addEventListener('DOMContentLoaded', () => {
  // Espera a que todo cargue (incluido Bricks)
  window.addEventListener('load', () => {
    setTimeout(() => {
      const headerEl = document.getElementById('brx-header');
      const targetEls = Array.from(document.querySelectorAll('.fb-hide-on-scroll'));

      if (!headerEl || !targetEls.length) return;

      let headerHeight = 0;
      let addThreshold = 0;
      let removeThreshold = 0;
      let hidden = false;
      let ticking = false;

      function updateHeights() {
        headerHeight = headerEl.getBoundingClientRect().height;
        addThreshold = Math.ceil(headerHeight) + 1;
        removeThreshold = Math.max(0, Math.floor(headerHeight) - 6);
      }

      function applyHiddenClass(shouldHide) {
        targetEls.forEach(el => {
          el.classList.toggle('fb-hide', shouldHide);
        });
      }

      function onScrollRaf() {
        const scrollY = window.scrollY || window.pageYOffset;

        if (!hidden && scrollY > addThreshold) {
          hidden = true;
          applyHiddenClass(true);
        } else if (hidden && scrollY < removeThreshold) {
          hidden = false;
          applyHiddenClass(false);
        }
        ticking = false;
      }

      function onScroll() {
        if (!ticking) {
          ticking = true;
          requestAnimationFrame(onScrollRaf);
        }
      }

      updateHeights();
      window.addEventListener('scroll', onScroll, { passive: true });

      window.addEventListener('resize', () => {
        updateHeights();
        onScrollRaf();
      });

      if (typeof ResizeObserver !== 'undefined') {
        const ro = new ResizeObserver(() => {
          updateHeights();
          onScrollRaf();
        });
        ro.observe(headerEl);
      }

      onScrollRaf();
    }, 400); // <-- inicia 1 segundo después de la carga completa
  });
});
This is just placeholder text.

This is just placeholder

orem ipsum dolor sit amet, consectetur adipiscing elit. Integer laoreet mi vestibulum cursus condimentum.

Nam rutrum nibh sit amet diam ornare imperdiet. Curabitur eu enim vel magna dignissim vestibulum. Suspendisse a ultrices lacus, vel luctus enim.

I am a button