Center align pie chart

The pie chart was not properly centered. This commit aligns the pie chart to the center of the component.

src/components/ExpenseChart.tsx

@@ -17,7 +17,7 @@ const ExpenseChart: React.FC<ExpenseChartProps> = ({ data }) => {
   return (
     <div className="neuro-card h-64 desktop-card">
       <ResponsiveContainer width="100%" height="100%">
-        <PieChart margin={{ left: 20, right: 20, top: 10, bottom: 10 }}>
+        <PieChart margin={{ left: 20, right: 20, top: 20, bottom: 20 }}>
           <Pie
             data={data}
             cx="50%"

src/components/SimpleAvatar.tsx

@@ -0,0 +1,41 @@
+
+import React from 'react';
+
+interface SimpleAvatarProps {
+  src?: string;
+  name: string;
+  size?: 'sm' | 'md' | 'lg';
+  className?: string;
+}
+
+const SimpleAvatar: React.FC<SimpleAvatarProps> = ({ 
+  src, 
+  name, 
+  size = 'md',
+  className = '' 
+}) => {
+  const initials = name
+    .split(' ')
+    .map(part => part.charAt(0))
+    .join('')
+    .toUpperCase()
+    .substring(0, 2);
+
+  const sizeClasses = {
+    sm: 'w-8 h-8 text-xs',
+    md: 'w-10 h-10 text-sm',
+    lg: 'w-12 h-12 text-base'
+  };
+
+  return (
+    <div className={`flex items-center justify-center rounded-full bg-neuro-income text-white ${sizeClasses[size]} ${className}`}>
+      {src ? (
+        <img src={src} alt={name} className="w-full h-full rounded-full object-cover" />
+      ) : (
+        <span>{initials}</span>
+      )}
+    </div>
+  );
+};
+
+export default SimpleAvatar;

src/components/analytics/CategorySpendingList.tsx

@@ -27,7 +27,7 @@ const CategorySpendingList: React.FC<CategorySpendingListProps> = ({
   return (
     <div className={`neuro-card mb-6 w-full ${className}`}>
       {categories.some(cat => cat.current > 0) ? (
-        <div className="space-y-4">
+        <div className="space-y-4 px-4 py-4">
           {categories.map((category) => {
             // 카테고리 이름을 직접 표시
             const categoryName = category.title;