diff --git a/app.js b/app.js
new file mode 100644
index 0000000..33253c2
--- /dev/null
+++ b/app.js
@@ -0,0 +1,79 @@
+// ==================== APP BOOTSTRAP ====================
+
+function setScreenVisibility({ showAuth }) {
+ const splash = document.getElementById('splash');
+ const authScreen = document.getElementById('auth-screen');
+ const mainApp = document.getElementById('main-app');
+
+ if (splash) splash.classList.add('hidden');
+
+ if (showAuth) {
+ authScreen?.classList.remove('hidden');
+ mainApp?.classList.add('hidden');
+ } else {
+ authScreen?.classList.add('hidden');
+ mainApp?.classList.remove('hidden');
+ }
+}
+
+function safelyRunAuthListener() {
+ if (typeof auth === 'undefined' || !auth?.onAuthStateChanged) {
+ setScreenVisibility({ showAuth: true });
+ return;
+ }
+
+ auth.onAuthStateChanged((user) => {
+ if (user) {
+ currentUser = user;
+ setScreenVisibility({ showAuth: false });
+ } else {
+ setScreenVisibility({ showAuth: true });
+ }
+ }, () => {
+ setScreenVisibility({ showAuth: true });
+ });
+}
+
+function registerFallbacks() {
+ window.app = window.app || {
+ toggleSidebar() {
+ toast?.show('Sidebar coming soon', 'info');
+ }
+ };
+
+ window.nav = window.nav || {
+ openMessages() {
+ toast?.show('Messages coming soon', 'info');
+ }
+ };
+
+ window.camera = window.camera || {
+ open() {
+ toast?.show('Camera coming soon', 'info');
+ }
+ };
+
+ window.story = window.story || {
+ add() {
+ toast?.show('Stories coming soon', 'info');
+ }
+ };
+}
+
+function hideSplashAfterDelay() {
+ const splash = document.getElementById('splash');
+ if (!splash) return;
+
+ setTimeout(() => {
+ splash.classList.add('hidden');
+ }, 1200);
+}
+
+window.addEventListener('DOMContentLoaded', () => {
+ registerFallbacks();
+ hideSplashAfterDelay();
+});
+
+window.addEventListener('load', () => {
+ safelyRunAuthListener();
+});
diff --git a/index.html b/index.html
index bf20143..49c352a 100644
--- a/index.html
+++ b/index.html
@@ -23,7 +23,7 @@
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@@ -406,19 +406,10 @@ Accoun
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