Add footer and styling to index.md for improved presentation and attribution

Author: TMHSDigital

docs/index.md

@@ -87,4 +87,27 @@ This tool is provided for **educational and legitimate security testing purposes
 
 ## License
 
-This project is licensed under the MIT License with additional restrictions against malicious use. 
+This project is licensed under the MIT License with additional restrictions against malicious use. 
+
+<div class="site-footer">
+  <strong>subenum</strong> is maintained by <a href="https://github.com/TMHSDigital">TMHSDigital</a>.<br>
+  <span style="font-size:0.95em;">This page was generated by <a href="https://pages.github.com/">GitHub Pages</a>.</span>
+</div>
+
+<style>
+.site-footer {
+  text-align: center;
+  margin-top: 3em;
+  font-size: 0.98em;
+  color: #555;
+  padding-bottom: 1.5em;
+}
+.site-footer a {
+  color: #2a6496;
+  text-decoration: none;
+  font-weight: 500;
+}
+.site-footer a:hover {
+  text-decoration: underline;
+}
+</style>