cart: fix dark theme

src/pages/cart/cart.module.css

@@ -85,12 +85,10 @@
   max-width: 100vw;
   margin: 0 auto;
   padding: 40px 24px;
-  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
   min-height: 100vh;
 }
 
 .desktopMainContent {
-  background: #ffffff;
   border-radius: 24px;
   padding: 32px;
   box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
@@ -106,7 +104,6 @@
 .desktopEmptyCart {
   text-align: center;
   padding: 80px 40px;
-  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
   border-radius: 20px;
   border: 2px dashed rgba(0, 0, 0, 0.1);
 }
@@ -123,7 +120,7 @@
 }
 
 .desktopCartItemsSection {
-  margin-bottom: 48px;
+  margin-bottom: 16px;
 }
 
 .desktopCartItems {
@@ -270,7 +267,7 @@
   top: 24px;
   display: flex;
   flex-direction: column;
-  gap: 24px;
+  gap: 16px;
 }
 
 .desktopSidebarCard {
@@ -533,15 +530,15 @@
 
   .desktopRecommendationsGrid {
     grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
-    gap: 32px;
+    gap: 16px;
   }
 
   .desktopCartItems {
-    gap: 32px;
+    gap: 16px;
   }
 
   .desktopSidebar {
-    gap: 32px;
+    gap: 16px;
   }
 
   .desktopEmptyCart {