Update app.py

app.py

@@ -6,6 +6,7 @@ st.set_page_config(page_title="Cohere Chat", layout="wide")
 
 AI_PFP = "media/pfps/cohere-pfp.png"
 USER_PFP = "media/pfps/user-pfp.jpg"
+BANNER = "media/banner.png"
 
 if not os.path.exists(AI_PFP) or not os.path.exists(USER_PFP):
     st.error("Missing profile pictures in media/pfps directory")
@@ -70,6 +71,21 @@ model_info = {
 }
 
 with st.sidebar:
+    st.image(BANNER, use_column_width=True)
+    st.title("Settings")
+    theme = st.selectbox("Theme", ["Light", "Dark"], index=0)
+    if theme == "Dark":
+        st.markdown(
+            """
+            <style>
+            /* Streamlit dark mode override */
+            .css-18ni7ap, .css-1d391kg, .css-12oz5g7 { background-color: #2e2e2e !important; color: #f0f0f0 !important; }
+            body { background-color: #1e1e1e !important; color: #f0f0f0 !important; }
+            </style>
+            """, unsafe_allow_html=True
+        )
+    st.markdown("# Cohere Labs")
+    st.markdown("Hugging Face 🤗 Community UI")
     st.title("Settings")
     api_key = st.text_input("Cohere API Key", type="password")
     selected_model = st.selectbox("Model", options=list(model_info.keys()))