Update app.py

app.py

@@ -93,7 +93,7 @@ def generate_response(context, query):
             base_url="https://openrouter.ai/api/v1",
             api_key=openrouter_api_key,
             default_headers={
-                "HTTP-Referer": "https://YourAppName.com",
+                "HTTP-Referer": "EnhancedRag",
                 "X-Title": "DocumentChatApp",
                 "User-Agent": "YourApp/1.0"
             }
@@ -117,7 +117,7 @@ If the document doesn't specifically mention the exact information asked, please
 
         # Generate response using OpenRouter
         response = openrouter_client.chat.completions.create(
-            model="google/gemma-3-27b-it:free",
+            model="meta-llama/llama-3.3-70b-instruct:free",
             messages=[
                 {"role": "system", "content": "You are a helpful document analysis assistant."},
                 {"role": "user", "content": prompt}