Update app.py

app.py

@@ -31,7 +31,7 @@ def calculate_footprint(car_km, bus_km, train_km, air_km,
     return total_emissions, stats
 
 # --- Default system prompt ----------------------------------------------------
-DEFAULT_SYSTEM_PROMPT = """
+system_message = """
 You are Sustainable.ai, a friendly, encouraging, and knowledgeable AI assistant.
 Always provide practical sustainability suggestions that are easy to adopt,
 while keeping a supportive and positive tone. Prefer actionable steps over theory.
@@ -113,7 +113,6 @@ demo = gr.ChatInterface(
     fn=respond,
     type="messages",
     additional_inputs=[
-        gr.Textbox(value=DEFAULT_SYSTEM_PROMPT, label="System Prompt"),
         gr.Slider(0, 500, value=50, step=10, label="Car km/week"),
         gr.Slider(0, 500, value=20, step=10, label="Bus km/week"),
         gr.Slider(0, 500, value=20, step=10, label="Train km/week"),