Update app.py

app.py

@@ -61,7 +61,7 @@ def chat(user_msg: str, history_ids: list[int] | None):
     return pairs, history_ids
 
 # ─── Gradio UI ───────────────────────────────────────────────────────────────
-with gr.Blocks(theme=gr.themes.Seafoam()) as demo:
+with gr.Blocks(theme=gr.themes.Base()) as demo:
     gr.Markdown(f"<h1 style='text-align:center'>{TITLE}</h1>")
     gr.Markdown(DESCRIPTION)