Update app.py

app.py

@@ -1,20 +1,75 @@
 import streamlit as st
 import math
 
-# Application title
-st.title("Pipe Size Calculator")
+# Set page configuration
+st.set_page_config(
+    page_title="Pipe Size Calculator",
+    page_icon="💧",
+    layout="centered",
+    initial_sidebar_state="expanded",
+)
 
-# Input fields for flow rate and velocity
-flow_rate = st.number_input("Enter flow rate (m³/s):", min_value=0.0, step=0.01, format="%.2f")
-velocity = st.number_input("Enter velocity (m/s):", min_value=0.0, step=0.01, format="%.2f")
-
-# Calculate and display the recommended pipe diameter
-if flow_rate > 0 and velocity > 0:
-    # Calculate pipe diameter in meters
-    diameter = math.sqrt((4 * flow_rate) / (math.pi * velocity))
+# Sidebar for input and app information
+st.sidebar.title("Pipe Size Calculator 💧")
+st.sidebar.markdown(
+    """
+    Calculate the **recommended pipe diameter** based on:
+    - Flow Rate (\( Q \)) in cubic meters per second.
+    - Velocity (\( V \)) in meters per second.
     
-    # Convert diameter to centimeters for better readability
-    diameter_cm = diameter * 100
-    st.success(f"Recommended Pipe Diameter: {diameter:.4f} meters ({diameter_cm:.2f} cm)")
-else:
-    st.warning("Please enter valid positive values for both flow rate and velocity.")
+    Developed for engineers and fluid mechanics enthusiasts! 🌊
+    """
+)
+
+# Main application title
+st.title("💧 Pipe Size Calculator")
+
+# Add layout with two columns
+col1, col2 = st.columns(2)
+
+# Input section
+with col1:
+    st.header("Input Parameters")
+    flow_rate = st.number_input(
+        "Enter Flow Rate (m³/s):", 
+        min_value=0.0, 
+        step=0.01, 
+        format="%.2f"
+    )
+    velocity = st.number_input(
+        "Enter Velocity (m/s):", 
+        min_value=0.0, 
+        step=0.01, 
+        format="%.2f"
+    )
+
+# Add a button to calculate the diameter
+with col2:
+    st.header("Action")
+    if st.button("Generate Pipe Diameter"):
+        if flow_rate > 0 and velocity > 0:
+            # Calculate pipe diameter
+            diameter = math.sqrt((4 * flow_rate) / (math.pi * velocity))
+            diameter_cm = diameter * 100  # Convert to cm for better readability
+            
+            # Display results in success box
+            st.success(
+                f"Recommended Pipe Diameter: \n"
+                f"- **{diameter:.4f} meters** \n"
+                f"- **{diameter_cm:.2f} centimeters**"
+            )
+        else:
+            # Warning for invalid input
+            st.error("Please enter positive values for both flow rate and velocity.")
+    else:
+        st.info("Click the button to calculate the pipe diameter.")
+
+# Footer with additional info
+st.sidebar.markdown("---")
+st.sidebar.markdown(
+    """
+    **Note:** Ensure flow rate and velocity are within realistic ranges for best results. 🌟  
+    Created with ❤️ using [Streamlit](https://streamlit.io).
+    """
+)
+