Update src/streamlit_app.py

src/streamlit_app.py

@@ -47,14 +47,19 @@ if submitted:
         "Flights": flights * EMISSION_FACTORS["Flights"]
     }
 
-    # Pie chart
+    # Pie chart with green shades and percent labels
     st.markdown("### 🧾 Activity-wise Contribution to Your Footprint")
+
+    green_colors = ['#006400', '#228B22', '#32CD32', '#7CFC00']  # dark to light green
     fig = px.pie(
         names=yearly_values.keys(),
         values=yearly_values.values(),
         title="Your Carbon Footprint Breakdown",
-        color_discrete_sequence=px.colors.sequential.RdBu
+        color_discrete_sequence=green_colors,
+        hole=0.3
     )
+    fig.update_traces(textinfo='label+percent', textfont_size=16)
+
     st.plotly_chart(fig, use_container_width=True)
 
     st.markdown("---")