diff --git a/src/app/page.tsx b/src/app/page.tsx
index 85dd4b4..6c04f07 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -11,8 +11,8 @@ import SocialProofOne from "@/components/sections/socialProof/SocialProofOne";
 import FaqSplitText from "@/components/sections/faq/FaqSplitText";
 import ContactSplit from "@/components/sections/contact/ContactSplit";
 import FooterCard from "@/components/sections/footer/FooterCard";
-import { Zap, Package, Star, Shield, Headphones, CreditCard, Check, Award, Sparkles, Heart, Trophy, Mail, Facebook, Instagram, Linkedin, Twitter, ShoppingCart } from "lucide-react";
-import { useState, useEffect } from "react";
+import { Zap, Package, Star, Shield, Headphones, CreditCard, Check, Award, Sparkles, Heart, Trophy, Mail, Facebook, Instagram, Linkedin, Twitter } from "lucide-react";
+import { useState, useEffect, useCallback } from "react";
 
 interface CartItem {
   id: string;
@@ -34,7 +34,7 @@ export default function LandingPage() {
   const [showCart, setShowCart] = useState(false);
   const [productCategories, setProductCategories] = useState<ProductCategory[]>([]);
   const [selectedCategoryId, setSelectedCategoryId] = useState<string | null>(null);
-  const [isLoadingCategories, setIsLoadingCategories] = useState(true);
+  const [isLoadingCategories, setIsLoadingCategories] = useState(false);
 
   // All 60 products organized by category
   const allProducts = [
@@ -110,8 +110,6 @@ export default function LandingPage() {
 
   // Initialize categories on mount
   useEffect(() => {
-    setIsLoadingCategories(true);
-    // Simulate category loading delay
     const timer = setTimeout(() => {
       const categories = [
         {
@@ -140,25 +138,25 @@ export default function LandingPage() {
         }
       ];
       setProductCategories(categories);
-      setIsLoadingCategories(false);
-      // Set first category as default
       setSelectedCategoryId(categories[0].id);
     }, 500);
     return () => clearTimeout(timer);
   }, []);
 
-  const addToCart = (product: any) => {
-    const existingItem = cart.find(item => item.id === product.id);
-    if (existingItem) {
-      setCart(cart.map(item =>
-        item.id === product.id
-          ? { ...item, quantity: item.quantity + 1 }
-          : item
-      ));
-    } else {
-      setCart([...cart, { ...product, quantity: 1 }]);
-    }
-  };
+  const addToCart = useCallback((product: any) => {
+    setCart(prevCart => {
+      const existingItem = prevCart.find(item => item.id === product.id);
+      if (existingItem) {
+        return prevCart.map(item =>
+          item.id === product.id
+            ? { ...item, quantity: item.quantity + 1 }
+            : item
+        );
+      } else {
+        return [...prevCart, { ...product, quantity: 1 }];
+      }
+    });
+  }, []);
 
   const removeFromCart = (id: string) => {
     setCart(cart.filter(item => item.id !== id));
@@ -276,7 +274,7 @@ export default function LandingPage() {
 
       <div id="products" data-section="products">
         <div className="w-full py-16 md:py-20 px-4">
-          {isLoadingCategories ? (
+          {!productCategories.length ? (
             <div className="flex flex-col items-center justify-center min-h-96">
               <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-current mb-4"></div>
               <p className="text-lg">Загрузка категорий товаров...</p>