Update app.py

app.py

@@ -1,10 +1,3 @@
-
-
-# ADD THIS IN APP.PY
-
-
-
-
 import os
 import gradio as gr
 from openai import OpenAI
@@ -12,12 +5,13 @@ from openai import OpenAI
 # -----------------------------
 # Load OpenAI key from HF Secrets
 # -----------------------------
-# In Hugging Face Spaces, Secrets/Variables are available as environment variables.
-# Add this in your Space Settings -> Variables and secrets -> Secrets
-# Key name: OPENAI_API_KEY
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
 
-
+if not OPENAI_API_KEY:
+    raise ValueError(
+        "OPENAI_API_KEY is not set. "
+        "Add it in your Hugging Face Space: Settings → Variables and secrets → Secrets."
+    )
 
 client = OpenAI(api_key=OPENAI_API_KEY)
 
@@ -164,7 +158,8 @@ css = """
 }
 """
 
-with gr.Blocks(css=css, theme=gr.themes.Soft(), elem_id="app_container") as demo:
+# Gradio 6+ expects css/theme passed to launch()
+with gr.Blocks(elem_id="app_container") as demo:
     # Header Row
     with gr.Row():
         with gr.Column(scale=1, min_width=80):
@@ -172,8 +167,6 @@ with gr.Blocks(css=css, theme=gr.themes.Soft(), elem_id="app_container") as demo
                 value=LOGO_URL,
                 label=None,
                 show_label=False,
-                show_download_button=False,
-                show_share_button=False,
                 height=64,
                 width=64,
                 container=False
@@ -291,4 +284,9 @@ with gr.Blocks(css=css, theme=gr.themes.Soft(), elem_id="app_container") as demo
         outputs=[chatbot, state, msg]
     )
 
-demo.launch(debug=False)
+# Pass theme/css here for Gradio 6+
+demo.launch(
+    debug=False,
+    theme=gr.themes.Soft(),
+    css=css
+)