amount formatter

src/components/HistoryChart.tsx

@@ -34,6 +34,23 @@ export default function HistoryChart({
 
   const maxAmount = Math.max(...currentData.map((d) => d.amount), 1);
 
+  // ✅ Formatter (₹ + adaptive units)
+  const formatAmount = (amount: number) => {
+    const tab = activeTab.toLowerCase();
+
+    if (tab === "year") {
+      const lakhs = amount / 100000;
+      return `₹ ${lakhs.toFixed(2)} L`;
+    }
+
+    if (tab === "month") {
+      const thousands = amount / 1000;
+      return `₹ ${thousands.toFixed(1)} K`;
+    }
+
+    return `₹ ${amount.toLocaleString("en-IN")}`;
+  };
+
   return (
     <Paper sx={{ p: { xs: 2, sm: 4 }, borderRadius: 4, width: "100%", boxShadow: 'none', border: '1px solid', borderColor: 'divider' }}>
       <Typography variant="h6" fontWeight={700} gutterBottom>
@@ -94,7 +111,7 @@ export default function HistoryChart({
                 }}
               >
                 <Typography variant="caption" sx={{ mb: 1, opacity: 0.7, fontSize: '0.65rem', display: { xs: 'none', sm: 'block' } }}>
-                  {point.amount > 0 ? `Rs ${point.amount}` : ''}
+                  {point.amount > 0 ? formatAmount(point.amount) : ""}
                 </Typography>
 
                 <Box