Reduce chart size

Reduce the size of the chart elements.

src/components/ExpenseChart.tsx

@@ -17,13 +17,13 @@ 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: 20, bottom: 20 }}>
+        <PieChart margin={{ left: 40, right: 40, top: 20, bottom: 20 }}>
           <Pie
             data={data}
             cx="50%"
             cy="50%"
-            innerRadius={50}
-            outerRadius={70}
+            innerRadius={30}
+            outerRadius={50}
             paddingAngle={5}
             dataKey="value"
             labelLine={true}