Update src/streamlit_app.py

src/streamlit_app.py

@@ -27,41 +27,51 @@ st.markdown("""
         border-radius: 0.5rem;
         margin-bottom: 1rem;
     }
+    .css-1dp5vir {
+        padding: 2rem;
+    }
     </style>
 """, unsafe_allow_html=True)
 
 # Title and description
 st.title("🤖 Groq AI Chat Assistant")
-st.markdown("Powered by Groq's lightning-fast LLM API")
+st.markdown("⚡ Powered by Groq's lightning-fast LLM API - Get instant AI responses!")
 
 # Sidebar configuration
 with st.sidebar:
     st.header("⚙️ Configuration")
     
+    st.markdown("---")
+    
     # API Key input
     api_key = st.text_input(
         "Enter your Groq API Key",
         type="password",
-        help="Get your API key from https://console.groq.com"
+        help="Get your free API key from https://console.groq.com"
     )
     
     if not api_key:
-        st.warning("Please enter your Groq API key to proceed.")
+        st.warning("🔑 Please enter your Groq API key to proceed.")
+    else:
+        st.success("✅ API Key loaded")
+    
+    st.markdown("---")
     
     # Model selection
     model_option = st.selectbox(
         "Select Model",
         [
-            "mixtral-8x7b-32768",
-            "gemma-7b-it",
-            "llama2-70b-4096"
+            "llama-3.3-70b-versatile",
+            "llama-3.1-8b-instant",
+            "gemma2-9b-it"
         ],
-        help="Choose the AI model to use"
+        help="Choose the AI model to use",
+        index=0
     )
     
     # Temperature slider
     temperature = st.slider(
-        "Temperature",
+        "Temperature (Creativity)",
         min_value=0.0,
         max_value=2.0,
         value=0.7,
@@ -71,7 +81,7 @@ with st.sidebar:
     
     # Max tokens slider
     max_tokens = st.slider(
-        "Max Tokens",
+        "Max Tokens (Response Length)",
         min_value=100,
         max_value=2048,
         value=1024,
@@ -79,17 +89,34 @@ with st.sidebar:
         help="Maximum length of response"
     )
     
+    st.markdown("---")
+    
     # Clear chat button
     if st.button("🗑️ Clear Chat History", use_container_width=True):
         st.session_state.messages = []
         st.rerun()
     
-    st.divider()
-    st.markdown("**About**")
-    st.info(
-        "This app uses Groq's API to provide fast AI responses. "
-        "Get your API key at https://console.groq.com"
-    )
+    st.markdown("---")
+    
+    # Info section
+    st.markdown("**📋 Model Information**")
+    
+    model_info = {
+        "llama-3.3-70b-versatile": "Most powerful model - Best for complex tasks",
+        "llama-3.1-8b-instant": "Fastest responses - Good for quick questions",
+        "gemma2-9b-it": "Balanced performance - Good all-rounder"
+    }
+    
+    st.info(f"**{model_option}**\n\n{model_info[model_option]}")
+    
+    st.markdown("---")
+    
+    st.markdown("**🔗 Resources**")
+    st.markdown("""
+    - [Get Groq API Key](https://console.groq.com)
+    - [Groq Documentation](https://console.groq.com/docs)
+    - [API Status](https://status.groq.com)
+    """)
 
 # Initialize session state for chat history
 if "messages" not in st.session_state:
@@ -125,6 +152,8 @@ if api_key:
             )
             
             with st.chat_message("assistant"):
+                message_placeholder = st.empty()
+                
                 # Call Groq API
                 response = client.chat.completions.create(
                     model=model_option,
@@ -135,7 +164,7 @@ if api_key:
                 )
                 
                 assistant_message = response.choices[0].message.content
-                st.markdown(assistant_message)
+                message_placeholder.markdown(assistant_message)
                 
                 # Add assistant response to history
                 st.session_state.messages.append({
@@ -148,19 +177,58 @@ if api_key:
         
         except Exception as e:
             error_str = str(e).lower()
+            full_error = str(e)
             
             if "proxies" in error_str or "proxy" in error_str:
                 st.error("❌ Proxy Error - Trying alternative connection method...")
                 st.info("Refresh the page and try again. If problem persists, restart the Space.")
-            elif "authentication" in error_str or "401" in error_str or "invalid" in error_str:
-                st.error("❌ Invalid API Key - Please check your Groq API key")
+            elif "authentication" in error_str or "401" in error_str or "invalid" in error_str or "api_error" in error_str:
+                st.error("❌ Invalid API Key")
+                st.warning("Please check your Groq API key:")
+                st.info("""
+                1. Go to https://console.groq.com
+                2. Click API Keys in sidebar
+                3. Copy your key (should start with 'gsk_')
+                4. Paste it above - NO extra spaces!
+                5. Make sure your account has credits
+                """)
+                with st.expander("Show full error"):
+                    st.code(full_error)
             elif "rate_limit" in error_str or "429" in error_str:
                 st.error("❌ Rate limit reached - Please wait a moment and try again")
             elif "connection" in error_str:
                 st.error("❌ Connection Error - Please check your internet connection")
+            elif "decommissioned" in error_str or "model" in error_str:
+                st.error("❌ Model Error - This model is no longer available")
+                st.info("Try selecting a different model from the sidebar")
             else:
-                st.error(f"❌ Error: {str(e)}")
-                st.info("Make sure you have an active Groq account with credits")
+                st.error(f"❌ Error: {full_error}")
+                st.info("Make sure you have an active Groq account with available credits")
 
 else:
-    st.info("👈 Please enter your Groq API key in the sidebar to start chatting.")
+    st.info("👈 Please enter your Groq API key in the sidebar to start chatting.")
+    
+    st.markdown("---")
+    
+    st.markdown("## 🚀 Getting Started")
+    st.markdown("""
+    1. **Get API Key**: Visit [console.groq.com](https://console.groq.com) and sign up (free)
+    2. **Create Key**: Go to API Keys section and create a new API key
+    3. **Paste Key**: Paste your key in the sidebar on the left
+    4. **Start Chatting**: Type your message and press Enter!
+    
+    ### Features
+    - ⚡ Lightning-fast responses
+    - 🎯 Multiple AI models to choose from
+    - 🎛️ Adjustable temperature and response length
+    - 💾 Chat history management
+    - 🌐 Works on desktop and mobile
+    """)
+
+# Footer
+st.markdown("---")
+st.markdown("""
+<div style="text-align: center; color: gray; font-size: 12px;">
+    Made with Streamlit & Groq API | © 2025
+</div>
+""", unsafe_allow_html=True)