diff --git a/include/footer.php b/include/footer.php
index 4ce456a..a398aa8 100644
--- a/include/footer.php
+++ b/include/footer.php
@@ -1,4 +1,28 @@
 <footer>
     <p>© 2026 Smart House</p>
 </footer>
-<script src="../dashboard.js"></script>
\ No newline at end of file
+<script src="../dashboard.js"></script>
+<script>
+function toggleTheme() {
+    const body = document.body;
+    const btn = document.getElementById('toggle-theme');
+    body.classList.toggle('light-mode');
+
+    if (body.classList.contains('light-mode')) {
+        btn.textContent = '🌙';
+        localStorage.setItem('theme', 'light');
+    } else {
+        btn.textContent = '☀️';
+        localStorage.setItem('theme', 'dark');
+    }
+}
+
+(function() {
+    const theme = localStorage.getItem('theme');
+    const btn = document.getElementById('toggle-theme');
+    if (theme === 'light') {
+        document.body.classList.add('light-mode');
+        if (btn) btn.textContent = '🌙';
+    }
+})();
+</script>
\ No newline at end of file