Desktop: cart checkout two-column + profile account grid

- cart checkout (/cart/$cartId): steps on the left, sticky order summary on the
  right at lg (1320px container); CartSummary becomes an inline card on desktop
  (fixed bottom bar on mobile)
- profile (/profile): contained account layout; menu becomes a 2-col card grid
  on desktop with a heading
- MyLayout: desktop gate now includes /cart/* and /profile

app/components/MyLayout.tsx

@@ -39,7 +39,9 @@ const MyLayout = React.memo(({ children }: { children: React.ReactNode }) => {
     p.startsWith("/seller/") ||
     p === "/collections" ||
     p.startsWith("/collection/") ||
-    p === "/cart";
+    p === "/cart" ||
+    p.startsWith("/cart/") ||
+    p === "/profile";
   // Auth pages get a full-width desktop canvas (so they can center their own
   // card) but no shopping header/footer.
   const isAuth = p === "/login" || p === "/logout";

app/components/cart/CartSummary.tsx

@@ -15,7 +15,7 @@ export const CartSummary = ({
   step,
   isLoading,
 }: CartSummaryProps) => (
-  <div className="max-w-md mx-auto fixed flex flex-row gap-2 w-full bottom-[50px] left-0 right-0 border-t py-1 px-2 z-50 bg-WHITE">
+  <div className="max-w-md mx-auto fixed flex flex-row gap-2 w-full bottom-[50px] left-0 right-0 border-t py-1 px-2 z-50 bg-WHITE lg:static lg:max-w-none lg:mx-0 lg:bottom-auto lg:flex-col-reverse lg:gap-4 lg:border lg:border-WHITE3 lg:rounded-xl lg:p-5 lg:z-auto">
     <Button
       variant="dark"
       size="lg"

app/routes/cart.$cartId.tsx

@@ -262,63 +262,67 @@ export default function CartDetail() {
           isError={isError}
           onRetry={refetch}
         >
-          <>
-            {step === 0 && (
-              <div className="flex flex-col w-full">
-                {cart?.items?.map((item, index) => (
-                  <CartItem
-                    key={item.id}
-                    item={item}
-                    onQuantityChange={handleQuantityChange}
-                    onRemoveItem={handleRemoveItem}
-                    isLoading={removeMutation.isPending}
-                    hasBorder={
-                      !!(cart?.items && index !== cart?.items?.length - 1)
-                    }
-                  />
-                ))}
-              </div>
-            )}
-            {step === 1 && (
-              <ShippingInformation
-                sellerId={cart?.seller?.username || ""}
-                total={calculateTotal(cart)}
-                setSelectedAddressInfo={setSelectedAddressInfo}
-                setSelectedCourierInfo={setSelectedCourierInfo}
-                setShippingInfoIsLoading={setShippingInfoIsLoading}
-                selectedAddressInfo={selectedAddressInfo}
-                cartId={cartId}
-              />
-            )}
-            {step === 2 && (
-              <ReceiverInformation
-                discountValue={Number(cart?.discountValue) || null}
-                cartItems={cart?.items || []}
-                selectedAddressInfo={selectedAddressInfo}
-                selectedCourierInfo={selectedCourierInfo}
+          <div className="lg:grid lg:grid-cols-[1fr_360px] lg:gap-7 lg:items-start lg:max-w-[1320px] lg:mx-auto lg:w-full lg:px-8 lg:py-6">
+            <div className="flex flex-col w-full">
+              {step === 0 && (
+                <div className="flex flex-col w-full">
+                  {cart?.items?.map((item, index) => (
+                    <CartItem
+                      key={item.id}
+                      item={item}
+                      onQuantityChange={handleQuantityChange}
+                      onRemoveItem={handleRemoveItem}
+                      isLoading={removeMutation.isPending}
+                      hasBorder={
+                        !!(cart?.items && index !== cart?.items?.length - 1)
+                      }
+                    />
+                  ))}
+                </div>
+              )}
+              {step === 1 && (
+                <ShippingInformation
+                  sellerId={cart?.seller?.username || ""}
+                  total={calculateTotal(cart)}
+                  setSelectedAddressInfo={setSelectedAddressInfo}
+                  setSelectedCourierInfo={setSelectedCourierInfo}
+                  setShippingInfoIsLoading={setShippingInfoIsLoading}
+                  selectedAddressInfo={selectedAddressInfo}
+                  cartId={cartId}
+                />
+              )}
+              {step === 2 && (
+                <ReceiverInformation
+                  discountValue={Number(cart?.discountValue) || null}
+                  cartItems={cart?.items || []}
+                  selectedAddressInfo={selectedAddressInfo}
+                  selectedCourierInfo={selectedCourierInfo}
+                  total={calculateTotal(
+                    cart,
+                    selectedCourierInfo?.courierIsFreightCollect ? 0 : selectedCourierInfo?.deliveryPrice,
+                    Number(cart?.discountValue)
+                  )}
+                />
+              )}
+            </div>
+
+            <div className="lg:sticky lg:top-[88px]">
+              <CartSummary
                 total={calculateTotal(
                   cart,
-                  selectedCourierInfo?.courierIsFreightCollect ? 0 : selectedCourierInfo?.deliveryPrice,
-                  Number(cart?.discountValue)
+                  step === 2 && !selectedCourierInfo?.courierIsFreightCollect ? selectedCourierInfo?.deliveryPrice : 0,
+                  step === 2 ? Number(cart?.discountValue) : 0
                 )}
+                onContinue={() => continueHandler()}
+                step={step}
+                isLoading={
+                  isCreatingOrder ||
+                  cashOutMutation.isPending ||
+                  shippingInfoIsLoading
+                }
               />
-            )}
-
-            <CartSummary
-              total={calculateTotal(
-                cart,
-                step === 2 && !selectedCourierInfo?.courierIsFreightCollect ? selectedCourierInfo?.deliveryPrice : 0,
-                step === 2 ? Number(cart?.discountValue) : 0
-              )}
-              onContinue={() => continueHandler()}
-              step={step}
-              isLoading={
-                isCreatingOrder ||
-                cashOutMutation.isPending ||
-                shippingInfoIsLoading
-              }
-            />
-          </>
+            </div>
+          </div>
         </UiProvider>
       </div>
     </div>

app/routes/profile._index.tsx

@@ -125,7 +125,10 @@ export default function Profile() {
   ];
   const navigate = useNavigate();
   return (
-    <div className="flex flex-col gap-0">
+    <div className="flex flex-col gap-0 lg:max-w-[1000px] lg:mx-auto lg:w-full lg:px-8 lg:py-8">
+      <h1 className="hidden lg:block text-[28px] font-extrabold mb-2">
+        حساب کاربری
+      </h1>
       <ProfileTopBar user={user} />
       <div
         className={`flex flex-row h-[55px] w-full items-center gap-2 justify-between px-[16px] active:bg-hover transition`}
@@ -181,7 +184,7 @@ const MenuItems = ({
   };
 
   return (
-    <div className="flex flex-col gap-0 w-full">
+    <div className="flex flex-col gap-0 w-full lg:grid lg:grid-cols-2 lg:gap-3 lg:mt-4">
       {items.map((item: MenuItemType, index: number) => {
         // Special handling for "support" item
         if (item.pageName === "support") {
@@ -239,7 +242,7 @@ const MenuItem = ({
 const MenuItemContent = ({ item }: { item: MenuItemType }) => {
   return (
     <div
-      className={`flex flex-row gap-2 items-center justify-between px-[16px] active:bg-hover transition cursor-pointer ${item.hasBorder && "border-t-[2px]"} h-[55px] w-full`}
+      className={`flex flex-row gap-2 items-center justify-between px-[16px] active:bg-hover transition cursor-pointer ${item.hasBorder && "border-t-[2px]"} h-[55px] w-full lg:h-auto lg:py-4 lg:px-5 lg:border lg:border-WHITE3 lg:rounded-xl lg:border-t lg:hover:bg-WHITE2`}
     >
       <div className="flex flex-row gap-2 items-center">
         {item.image}