/ LG+: 4 per row
                    item.style.background = '#dcfce7';
                    item.style.borderColor = '#16a34a';
                    item.innerHTML = `<strong>Column ${index + 1} (LG+)</strong><br><small class="text-muted">4 per row</small>`;
                }
            });
        }
        
        window.addEventListener('resize', addResponsiveVisualFeedback);
        addResponsiveVisualFeedback();
    </script>
</body>
</html>
