fix area chart

app.py

@@ -140,9 +140,9 @@ def full_report():
     county_map.update_layout(showlegend=False)
     county_map.update(layout_coloraxis_showscale=False)
 
-    df = df.groupby(['day', 'country']).sum().reset_index()
+    df = df.groupby(['day', 'country', 'continent']).sum().reset_index()
     df = df.sort_values(by=['day'])
-    df['total_jumps'] = df.groupby('country')['jumps'].cumsum()
+    df['total_jumps'] = df.groupby(['country', 'continent'])['jumps'].cumsum()
     jumps_over_time = px.area(df, x='day', 
                               y='total_jumps', 
                               color='continent',