Enhance budget input UI

- Improve the '+' icon for budget modification.
- Display the sum of category budgets instead of an input field for the total budget.
- Change the wallet icon in budget input.

src/components/CategoryBudgetInputs.tsx

@@ -35,15 +35,15 @@ const CategoryBudgetInputs: React.FC<CategoryBudgetInputsProps> = ({
   };
 
   return (
-    <div className="space-y-2 w-full">
+    <div className="space-y-3 w-full">
       {EXPENSE_CATEGORIES.map(category => (
-        <div key={category} className="flex items-center justify-between w-full">
-          <label className="text-sm text-gray-600">{category}</label>
+        <div key={category} className="flex items-center justify-between w-full p-2 neuro-pressed rounded-lg">
+          <label className="text-sm font-medium text-gray-700">{category}</label>
           <Input 
             value={formatWithCommas(categoryBudgets[category] || 0)} 
             onChange={(e) => handleInput(e, category)}
             placeholder="예산 입력"
-            className={`neuro-pressed transition-colors duration-300 ${isMobile ? 'w-[150px]' : 'max-w-[150px]'} text-xs`}
+            className={`neuro-pressed transition-colors duration-300 ${isMobile ? 'w-[150px]' : 'max-w-[150px]'}`}
           />
         </div>
       ))}