fix: import tempfile and stabilize UI CSS rendering in Gradio 6

app.py

@@ -1,9 +1,8 @@
 import os
 import base64
+import tempfile
 import gradio as gr
 from pathlib import Path
-import base64
-import os
 import requests
 from mistralai.client import Mistral
 
@@ -376,7 +375,7 @@ def init_voices_ui():
     default_val = choices[0][1] if choices else None
     return gr.update(choices=choices, value=default_val)
 
-with gr.Blocks(title="Voxtral Studio — Mistral AI Audio") as demo:
+with gr.Blocks(title="Voxtral Studio — Mistral AI Audio", css=css) as demo:
 
     gr.HTML("""
     <div class="app-header">
@@ -538,4 +537,4 @@ with gr.Blocks(title="Voxtral Studio — Mistral AI Audio") as demo:
     demo.load(fn=init_voices_ui, outputs=tts_voice_id)
 
 if __name__ == "__main__":
-    demo.launch(server_name="0.0.0.0", server_port=7860, ssr_mode=False)
+    demo.launch(server_name="0.0.0.0", server_port=7860)