Update Z-Score_Calculator.py

Z-Score_Calculator.py

@@ -178,26 +178,6 @@ def main():
             f"Sample size: {res['n']}**."
         )
 
-        # Z-Score Classification Guide
-        with st.expander("📊 Z-Score Classification Guide"):
-            st.markdown("""
-            **How to interpret your Z-Score:**
-            
-            | Z-Score Range | Classification | Percentile Range |
-            |:-------------:|:--------------:|:----------------:|
-            | z < -2.0 | Very Low | < 2.3% |
-            | -2.0 ≤ z < -0.5 | Below Average | 2.3% - 30.9% |
-            | **-0.5 ≤ z < 0.5** | **Average** | **30.9% - 69.1%** |
-            | 0.5 ≤ z < 2.0 | Above Average | 69.1% - 97.7% |
-            | z ≥ 2.0 | Very High | > 97.7% |
-            
-            **Context matters:**
-            - For **steps, sleep duration, and active minutes**: Higher values are generally better ✓
-            - For **heart rate**: Lower resting values are generally better ✓
-            
-            *A z-score of 0 means you are exactly at the population average for your demographic group.*
-            """)
-
         # Detailed statistics table
         st.subheader("Detailed Statistics")
         stats_df = pd.DataFrame(
@@ -417,6 +397,27 @@ def main():
             "Fill in all inputs and click Compute " "to get normative Z-score."
         )
 
+    # Z-Score Classification Guide (always visible)
+    st.markdown("---")
+    with st.expander("📊 Z-Score Classification Guide"):
+        st.markdown("""
+        **How to interpret Z-Scores:**
+        
+        | Z-Score Range | Classification | Percentile Range |
+        |:-------------:|:--------------:|:----------------:|
+        | z < -2.0 | Very Low | < 2.3% |
+        | -2.0 ≤ z < -0.5 | Below Average | 2.3% - 30.9% |
+        | **-0.5 ≤ z < 0.5** | **Average** | **30.9% - 69.1%** |
+        | 0.5 ≤ z < 2.0 | Above Average | 69.1% - 97.7% |
+        | z ≥ 2.0 | Very High | > 97.7% |
+        
+        **Context matters:**
+        - For **steps, sleep duration, and active minutes**: Higher values are generally better ✓
+        - For **heart rate**: Lower resting values are generally better ✓
+        
+        *A z-score of 0 means you are exactly at the population average for your demographic group.*
+        """)
+
     # Footer
     st.markdown("---")
     st.markdown(