fix: Remove css parameter from gr.Blocks for Gradio 6.0 compatibility

app.py

@@ -20,15 +20,8 @@ import requests
 import time
 from typing import Optional, List, Dict, Any
 
-# =============================================================================
-# TRY TO IMPORT UI MODULE (provides modular components)
-# =============================================================================
-try:
-    from ui.styles import CUSTOM_CSS
-    UI_STYLES_AVAILABLE = True
-except ImportError:
-    CUSTOM_CSS = ""
-    UI_STYLES_AVAILABLE = False
+# Note: Gradio 6.0 doesn't support custom CSS in gr.Blocks()
+# UI styles module available but not used in this version
 
 # Configure logging
 logging.basicConfig(level=logging.INFO)
@@ -226,7 +219,7 @@ def quick_build_circuit(template: str, num_qubits: int) -> str:
 # GRADIO INTERFACE
 # =============================================================================
 
-with gr.Blocks(title="QAgents - Quantum Circuit Assistant", css=CUSTOM_CSS if UI_STYLES_AVAILABLE else None) as demo:
+with gr.Blocks(title="QAgents - Quantum Circuit Assistant") as demo:
     
     # Header
     gr.Markdown("""