Update app.py

app.py

@@ -137,16 +137,12 @@ def main():
             placeholder="Specific methodology, theoretical framework, case studies, etc...",
             height=100
         )
-        api_key = st.text_input(
-            "Enter your Groq API Key",
-            type="password",
-            help="Your API key is used only to generate your document and is never stored."
-        )
+        api_key = os.environ.get("GROQ_API_KEY")
         if st.button("🚀 Generate Thesis Document", type="primary", use_container_width=True):
             if not topic.strip():
                 st.error("Please enter a thesis topic!")
-            elif not api_key.strip():
-                st.error("Please enter your Groq API key!")
+            elif not api_key:
+                st.error("Groq API key not configured. Please set GROQ_API_KEY environment variable.")
             else:
                 research_areas_text = research_areas if research_areas.strip() else "general academic research"
                 result = run_thesis_writer(topic, document_type, academic_level, research_areas_text, word_count, additional_requirements, api_key)