feat: enhance checkout page layout for better responsiveness and adjust cart actions for mobile

src/app/features/store/pages/checkout-page/checkout-data-step.component.scss

@@ -22,4 +22,5 @@
     flex: 1 1 290px;
     max-width: 290px;
   }
+
 }

src/app/features/store/pages/checkout-page/checkout-page.component.scss

@@ -6,6 +6,15 @@
 
   @media (max-width: 900px) {
     grid-template-columns: 1fr;
+
+    .checkout-page__cart-col {
+      order: 1;
+    }
+
+    .checkout-page__stepper-col,
+    .checkout-page__editing-notice {
+      order: 2;
+    }
   }
 
   &__stepper-col {

src/app/features/store/pages/checkout-page/checkout-payment-step.component.scss

@@ -110,6 +110,7 @@
 
 .payment-panel {
   min-width: 0;
+
   &__card {
     width: 100%;
     max-width: 320px;