add dotenv

app.py

@@ -1,6 +1,7 @@
 import os
 import gradio as gr
 from aixplain.factories import AgentFactory, ModelFactory
+from dotenv import load_dotenv
 
 SYSTEM_PROMPT = """
 You are an SEO Keyword Generator AI Agent. You must only provide lists of SEO keywords related to the user's specified topic or domain. Follow these rules:
@@ -31,8 +32,11 @@ Your output must always adhere to these rules and only provide a list of SEO key
 
 # Function to generate keywords
 def generate_keywords(api_key, topic):
+    # Load environment variables from .env file
+    load_dotenv()
+
     # Set aiXplain API key dynamically
-    os.environ["AIXPLAIN_API_KEY"] = api_key
+    os.environ["AIXPLAIN_API_KEY"] = api_key or os.getenv("AIXPLAIN_API_KEY")
 
     # Create the AI agent for keyword generation
     agent = AgentFactory.create(