Create app.py

app.py

@@ -0,0 +1,19 @@
+import streamlit as st
+from landing_page import show_landing_page
+from hydrogen_analyzer import show_hydrogen_analyzer
+from about_page import show_about_page
+
+# Page configuration
+st.set_page_config(page_title="Hydrogen Intelligence Platform", page_icon="⚡", layout="wide")
+
+# Sidebar navigation
+st.sidebar.title("Navigation")
+page = st.sidebar.radio("Go to", ["Home", "Hydrogen Analyzer", "About"])
+
+# Page Routing
+if page == "Home":
+    show_landing_page()
+elif page == "Hydrogen Analyzer":
+    show_hydrogen_analyzer()
+elif page == "About":
+    show_about_page()