diff --git a/assets/js/main.js b/assets/js/main.js
index e769b68..d57339c 100644
--- a/assets/js/main.js
+++ b/assets/js/main.js
@@ -125,7 +125,7 @@ document.addEventListener('DOMContentLoaded', () => {
         });
     }
 
-    window.filterCategory = function(categoryId, btnElement) {
+    function filterCategory(categoryId, btnElement) { window.filterCategory = filterCategory;
         currentCategory = categoryId;
         document.querySelectorAll('.category-btn').forEach(btn => btn.classList.remove('active'));
         if (btnElement) {
@@ -150,7 +150,7 @@ document.addEventListener('DOMContentLoaded', () => {
         });
     }
 
-    window.openRecallOrderModal = function() {
+    function openRecallOrderModal() { window.openRecallOrderModal = openRecallOrderModal;
         if (!recallModal) return;
         fetchRecallOrders();
         recallModal.show();
@@ -416,7 +416,7 @@ document.addEventListener('DOMContentLoaded', () => {
         });
     }
 
-    window.openTableSelectionModal = function() { 
+    function openTableSelectionModal() { window.openTableSelectionModal = openTableSelectionModal; 
         if (!tableSelectionModal) return; 
         fetchTables(); 
         tableSelectionModal.show(); 
@@ -477,7 +477,7 @@ document.addEventListener('DOMContentLoaded', () => {
         } 
     } 
  
-    window.selectTable = function(id, name) { 
+    function selectTable(id, name) { window.selectTable = selectTable; 
         currentTableId = id; 
         currentTableName = name; 
         const nameDisplay = document.getElementById("selected-table-name"); 
@@ -491,7 +491,7 @@ document.addEventListener('DOMContentLoaded', () => {
         } 
     }; 
 
-    window.checkOrderType = function() {
+    function checkOrderType() { window.checkOrderType = checkOrderType;
         const checked = document.querySelector('input[name="order_type"]:checked');
         if (!checked) return;
         const selected = checked.value;
@@ -507,7 +507,7 @@ document.addEventListener('DOMContentLoaded', () => {
         input.addEventListener('change', checkOrderType);
     });
 
-    window.handleProductClick = function(product, variants) {
+    function handleProductClick(product, variants) { window.handleProductClick = handleProductClick;
         if (variants && variants.length > 0) {
             openVariantModal(product, variants);
         } else {
@@ -549,14 +549,14 @@ document.addEventListener('DOMContentLoaded', () => {
         variantSelectionModal.show();
     }
 
-    window.addToCart = function(product) {
+    function addToCart(product) { window.addToCart = addToCart;
         const existing = cart.find(item => item.id === product.id && item.variant_id === product.variant_id);
         if (existing) existing.quantity++;
         else cart.push({...product});
         updateCart();
     };
 
-    window.changeQuantity = function(index, delta) {
+    function changeQuantity(index, delta) { window.changeQuantity = changeQuantity;
         if (cart[index]) {
             cart[index].quantity += delta;
             if (cart[index].quantity <= 0) cart.splice(index, 1);
@@ -564,12 +564,12 @@ document.addEventListener('DOMContentLoaded', () => {
         }
     };
 
-    window.removeFromCart = function(index) {
+    function removeFromCart(index) { window.removeFromCart = removeFromCart;
         cart.splice(index, 1);
         updateCart();
     };
 
-    window.clearCart = function() {
+    function clearCart() { window.clearCart = clearCart;
         if (cart.length === 0) return;
         cart = [];
         currentOrderId = null;
@@ -670,7 +670,7 @@ document.addEventListener('DOMContentLoaded', () => {
         }
     }
 
-    window.processOrder = function(paymentTypeId, paymentTypeName) {
+    function processOrder(paymentTypeId, paymentTypeName) { window.processOrder = processOrder;
         const orderTypeInput = document.querySelector('input[name="order_type"]:checked');
         const orderType = orderTypeInput ? orderTypeInput.value : 'takeaway';
         
@@ -766,7 +766,7 @@ document.addEventListener('DOMContentLoaded', () => {
         });
     };
 
-    window.triggerNetworkPrint = function(orderId, type) {
+    function triggerNetworkPrint(orderId, type) { window.triggerNetworkPrint = triggerNetworkPrint;
         if (!orderId) return;
         
         const printerIp = (type === 'kitchen') ? CURRENT_OUTLET.kitchen_printer_ip : CURRENT_OUTLET.cashier_printer_ip;
@@ -789,7 +789,7 @@ document.addEventListener('DOMContentLoaded', () => {
         .catch(err => console.error(`Network Print Fetch Error (${type}):`, err));
     };
 
-    window.printThermalReceipt = function(data) {
+    function printThermalReceipt(data) { window.printThermalReceipt = printThermalReceipt;
         let iframe = document.getElementById('print-iframe');
         if (!iframe) {
             iframe = document.createElement('iframe');
@@ -931,7 +931,7 @@ document.addEventListener('DOMContentLoaded', () => {
         iframe.contentWindow.print();
     };
 
-    window.openRatingQRModal = function() {
+    function openRatingQRModal() { window.openRatingQRModal = openRatingQRModal;
         const qrContainer = document.getElementById('rating-qr-container');
         const ratingUrl = BASE_URL + '/rate.php';
         const qrCodeUrl = "https://api.qrserver.com/v1/create-qr-code/?size=200x200&data=" + encodeURIComponent(ratingUrl);