diff --git a/includes/pwa-init.php b/includes/pwa-init.php
new file mode 100644
index 0000000..8635105
--- /dev/null
+++ b/includes/pwa-init.php
@@ -0,0 +1,82 @@
+<?php
+// Fichier d'initialisation PWA à inclure dans toutes les pages
+function addPWAHeaders() {
+    // Meta tags PWA
+    echo '<meta name="mobile-web-app-capable" content="yes">' . "\n";
+    echo '<meta name="apple-mobile-web-app-capable" content="yes">' . "\n";
+    echo '<meta name="apple-mobile-web-app-status-bar-style" content="default">' . "\n";
+    echo '<meta name="apple-mobile-web-app-title" content="kaubuntu.re">' . "\n";
+    echo '<meta name="application-name" content="kaubuntu.re">' . "\n";
+    echo '<meta name="msapplication-TileColor" content="#FF0000">' . "\n";
+    echo '<meta name="msapplication-config" content="browserconfig.xml">' . "\n";
+    echo '<meta name="theme-color" content="#FF0000">' . "\n";
+    
+    // Manifest
+    echo '<link rel="manifest" href="site.webmanifest">' . "\n";
+}
+
+function addPWAScripts() {
+    ?>
+    <!-- PWA Service Worker -->
+    <script>
+        if ('serviceWorker' in navigator) {
+            window.addEventListener('load', function() {
+                navigator.serviceWorker.register('/sw.js')
+                    .then(function(registration) {
+                        console.log('Service Worker enregistré avec succès:', registration.scope);
+                        
+                        // Écouter les mises à jour
+                        registration.addEventListener('updatefound', function() {
+                            const newWorker = registration.installing;
+                            newWorker.addEventListener('statechange', function() {
+                                if (newWorker.state === 'installed' && navigator.serviceWorker.controller) {
+                                    // Nouvelle version disponible
+                                    console.log('Nouvelle version disponible');
+                                    if (confirm('Une nouvelle version est disponible. Voulez-vous recharger la page ?')) {
+                                        window.location.reload();
+                                    }
+                                }
+                            });
+                        });
+                    })
+                    .catch(function(err) {
+                        console.log('Échec de l\'enregistrement du Service Worker:', err);
+                    });
+            });
+        }
+        
+        // Gestion de l'installation PWA
+        let deferredPrompt;
+        const installButton = document.getElementById('install-pwa');
+        
+        window.addEventListener('beforeinstallprompt', function(e) {
+            e.preventDefault();
+            deferredPrompt = e;
+            
+            // Afficher le bouton d'installation s'il existe
+            if (installButton) {
+                installButton.style.display = 'block';
+                installButton.addEventListener('click', function() {
+                    deferredPrompt.prompt();
+                    deferredPrompt.userChoice.then(function(choiceResult) {
+                        if (choiceResult.outcome === 'accepted') {
+                            console.log('PWA installée');
+                        }
+                        deferredPrompt = null;
+                        installButton.style.display = 'none';
+                    });
+                });
+            }
+        });
+        
+        // Masquer le bouton après installation
+        window.addEventListener('appinstalled', function() {
+            console.log('PWA installée avec succès');
+            if (installButton) {
+                installButton.style.display = 'none';
+            }
+        });
+    </script>
+    <?php
+}
+?>
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