Fix: move CSS to global scope to resolve NameError in main()

app.py

@@ -660,12 +660,11 @@ class ChatInterface:
 # Gradio UI
 # ============================================================
 
-def create_ui(config: AgentZeroConfig, chat_interface: ChatInterface, defense: PromptInjectionDefense):
-    css = """
-    .agent-zero-header { background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%); padding: 20px; border-radius: 10px; border: 1px solid #00ff41; margin-bottom: 20px; }
+CSS_STYLE = """    .agent-zero-header { background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%); padding: 20px; border-radius: 10px; border: 1px solid #00ff41; margin-bottom: 20px; }
     .agent-zero-header h1 { color: #00ff41; font-family: 'Courier New', monospace; text-shadow: 0 0 10px rgba(0,255,65,0.5); }
-    footer { visibility: hidden; }
-    """
+    footer { visibility: hidden; }"""
+
+def create_ui(config: AgentZeroConfig, chat_interface: ChatInterface, defense: PromptInjectionDefense):
     with gr.Blocks(title="Pentesting Agent Zero") as demo:
         gr.HTML("""<div class="agent-zero-header">
             <h1>🛡️ PENTESTING AGENT ZERO</h1>
@@ -727,7 +726,7 @@ def main():
     print(f"[+] Defense: {'ACTIVE' if config.prompt_injection_defense else 'DISABLED'}")
     print(f"[+] Model: {config.agent_model}\n")
     demo = create_ui(config, chat_interface, defense)
-    demo.launch(css=css, server_name="0.0.0.0", server_port=7860, mcp_server=config.mcp_enabled, share=False, theme=gr.themes.Monochrome(primary_hue="green", secondary_hue="gray"))
+    demo.launch(css=CSS_STYLE, server_name="0.0.0.0", server_port=7860, mcp_server=config.mcp_enabled, share=False, theme=gr.themes.Monochrome(primary_hue="green", secondary_hue="gray"))
 
 if __name__ == "__main__":
     main()