function updateLoyaltyUI() {
        if (!loyaltySection || typeof LOYALTY_SETTINGS === 'undefined' || !LOYALTY_SETTINGS.is_enabled) return;

        if (currentCustomer) {
            loyaltySection.classList.remove('d-none');
            if (loyaltyPointsDisplay) loyaltyPointsDisplay.textContent = currentCustomer.points + ' pts';
            
            if (redeemLoyaltyBtn) {
                const hasLoyaltyItem = cart.some(item => item.is_loyalty);
                const hasNonLoyaltyItem = cart.some(item => !item.is_loyalty);
                
                redeemLoyaltyBtn.disabled = !currentCustomer.eligible_for_free_meal || !hasLoyaltyItem || hasNonLoyaltyItem;
                
                if (loyaltyMessage) {
                    if (currentCustomer.eligible_for_free_meal) {
                        const count = currentCustomer.eligible_count || 1;
                        loyaltyMessage.innerHTML = `<span class="text-success fw-bold">Eligible for ${count} Free Product${count > 1 ? 's' : ''}!</span>`;
                        
                        if (hasNonLoyaltyItem) {
                             loyaltyMessage.innerHTML += '<div class="text-danger small" style="font-size: 0.7rem;">(Remove non-loyalty products to redeem)</div>';
                        } else if (!hasLoyaltyItem) {
                            loyaltyMessage.innerHTML += '<div class="text-warning small" style="font-size: 0.7rem;">(Add a loyalty product to redeem)</div>';
                        }
                    } else {
                        loyaltyMessage.textContent = `${currentCustomer.points_needed || 0} pts away from a free product.`;
                    }
                }
            }
        } else {
            loyaltySection.classList.add('d-none');
        }
    }