Update app.py

app.py

@@ -217,7 +217,20 @@ def send_example(example_text, history, max_tokens, temperature, top_p, qa_chain
 # ---------------------------
 # Gradio Interface Layout
 # ---------------------------
-with gr.Blocks(theme=gr.themes.Monochrome(primary_hue="sky")) as demo:
+# Create a theme instance using one of Gradio's prebuilt themes
+theme = gr.themes.Default(primary_hue="sky").set(
+    # Override the dark mode background to match the light mode background.
+    body_background_fill_dark="*body_background_fill",
+    # Override the primary button background for dark mode
+    button_primary_background_fill_dark="*button_primary_background_fill",
+    # Override text color so it stays the same in dark mode
+    text_color_dark="*text_color",
+    # Optionally, override other dark mode variables as needed
+    input_border_color_dark="*input_border_color",
+    slider_color_dark="*slider_color",
+)
+
+with gr.Blocks(theme=theme)) as demo:
     # Insert custom CSS for layout:
     gr.HTML("""
     <script>