Update app.py

app.py

@@ -4,7 +4,6 @@ import numpy as np
 
 import gradio as gr
 from sentence_transformers import SentenceTransformer
-from gradio.themes import Soft
 
 # here we define our basic setup. we decided to store all nutrition text files inside a folder called data
 # this lets us update content later just by dropping new .txt files without changing any code
@@ -168,46 +167,20 @@ def nutri_chat(message: str, history: list) -> str:
     return build_rag_answer(message)
 
 
-# here we build a chat-style ui using blocks and a chatbot component
-# this looks more like a normal chat app (similar to chatgpt) instead of a plain form
-green_theme = Soft(primary_hue="green", neutral_hue="green")
-
-with gr.Blocks(theme=green_theme) as demo:
-    gr.Markdown(
-        """
-# 🌿 nutribud
-
-chat with nutribud about general healthy eating questions.  
-nutribud is based on public health nutrition documents and does **not** give medical advice.
-
-try questions like:
-- how can i eat more vegetables every day?
-- what are some healthier drink options than soda?
-- what does a balanced plate usually look like?
-"""
-    )
-
-    chatbot = gr.Chatbot(label="nutribud chat")
-    with gr.Row():
-        msg = gr.Textbox(
-            show_label=False,
-            placeholder="type your nutrition question here and press enter...",
-            scale=4,
-        )
-        clear = gr.Button("clear chat", scale=1)
-
-    # this function connects our rag logic to the visual chat history
-    # we append the user message and nutribud’s reply as a pair so they show up as chat bubbles
-    def respond(message, history):
-        if history is None:
-            history = []
-        reply = nutri_chat(message, history)
-        history = history + [(message, reply)]
-        return "", history
-
-    msg.submit(respond, [msg, chatbot], [msg, chatbot])
-    clear.click(lambda: ([], ""), None, [chatbot, msg])
-
+# here we use gradio's chatinterface so the layout feels like a normal chat app
+# our earlier attempts to style themes directly caused version errors, so we keep it simple here
+demo = gr.ChatInterface(
+    fn=nutri_chat,
+    title="🌿 nutribud — friendly nutrition rag chatbot",
+    description=(
+        "ask nutribud general questions about healthy eating and it will answer using trusted public health documents.\n"
+        "nutribud does not give medical advice or personalized meal plans.\n\n"
+        "example questions:\n"
+        "• how can i eat more vegetables every day?\n"
+        "• what are some healthier drink options than soda?\n"
+        "• what does a balanced plate usually look like?"
+    ),
+)
 
 if __name__ == "__main__":
     demo.launch()