Update app.py

app.py

@@ -963,8 +963,7 @@ def play_page():
     q = questions[idx]
     st.subheader(f"Question {idx+1}/{len(questions)}")
     st.write(q["question"])
-
-    elapsed = int(time.time() - st.session_state.get('question_started_at', time.time()))
+    elapsed = int(time.time() - (st.session_state.get('question_started_at') or time.time()))
     time_limit = 15
     st.markdown(f"**Time left:** {max(0, time_limit - elapsed)} seconds")