define tab

app.py

@@ -30,6 +30,9 @@ url_api_generation_model = f"{abs_QA_module}/answer"
 with open("./static/styles.css") as f:
     st.markdown(f"<style>{f.read()}</style>", unsafe_allow_html=True)
 
+# ==== GIAO DIỆN CHÍNH - TABS ====
+tab1, tab2 = st.tabs(["🤖 ViBidLQA Chatbot", "🔐 Facebook OAuth"])
+
 # =============================
 # TAB 1: VIBIDLQA CHATBOT
 # =============================