diff --git a/admin/export-import.php b/admin/export-import.php
index cdf43a4..13907e4 100644
--- a/admin/export-import.php
+++ b/admin/export-import.php
@@ -186,5 +186,7 @@ $stories = Stories::getAll();
         margin-bottom: var(--spacing-md);
     }
     </style>
+    <link rel="stylesheet" href="../assets/css/dialog.css">
+    <script src="../assets/js/dialog.js"></script>
 </body>
 </html>
\ No newline at end of file
diff --git a/admin/index.php b/admin/index.php
index fea6fe6..3eb589e 100644
--- a/admin/index.php
+++ b/admin/index.php
@@ -68,5 +68,7 @@ $stories = Stories::getAll();
     </main>
 
     <script src="../assets/js/admin.js"></script>
+    <link rel="stylesheet" href="../assets/css/dialog.css">
+    <script src="../assets/js/dialog.js"></script>
 </body>
 </html>
\ No newline at end of file
diff --git a/admin/options.php b/admin/options.php
index 4c9a679..171f8a4 100644
--- a/admin/options.php
+++ b/admin/options.php
@@ -155,5 +155,7 @@ $config = Config::load();
         });
     });
     </script>
+    <link rel="stylesheet" href="../assets/css/dialog.css">
+    <script src="../assets/js/dialog.js"></script>
 </body>
 </html>
\ No newline at end of file
diff --git a/admin/profile.php b/admin/profile.php
index 74fdd13..7dadcca 100644
--- a/admin/profile.php
+++ b/admin/profile.php
@@ -138,5 +138,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             <button type="submit" class="button">Enregistrer les modifications</button>
         </form>
     </main>
+    <link rel="stylesheet" href="../assets/css/dialog.css">
+    <script src="../assets/js/dialog.js"></script>
 </body>
 </html>
\ No newline at end of file
diff --git a/admin/story-edit.php b/admin/story-edit.php
index 9a6eabd..e6f45e4 100644
--- a/admin/story-edit.php
+++ b/admin/story-edit.php
@@ -253,5 +253,7 @@ function generateSlug($title) {
             });
         });
         </script>
+        <link rel="stylesheet" href="../assets/css/dialog.css">
+        <script src="../assets/js/dialog.js"></script>
 </body>
 </html>
\ No newline at end of file
diff --git a/assets/css/dialog.css b/assets/css/dialog.css
new file mode 100644
index 0000000..95215ec
--- /dev/null
+++ b/assets/css/dialog.css
@@ -0,0 +1,107 @@
+/* dialog.css */
+.confirm-dialog {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: rgba(0, 0, 0, 0.5);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 9999;
+    opacity: 0;
+    transition: opacity 0.2s ease-in-out;
+}
+
+.confirm-dialog.show {
+    opacity: 1;
+}
+
+.confirm-dialog-content {
+    background-color: var(--bg-tertiary);
+    border-radius: var(--radius-md);
+    padding: var(--spacing-xl);
+    max-width: 90%;
+    width: 400px;
+    border: 1px solid var(--border-color);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
+    transform: translate(-50%, -60%);
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transition: transform 0.2s ease-in-out;
+}
+
+.confirm-dialog.show .confirm-dialog-content {
+    transform: translate(-50%, -50%);
+}
+
+.confirm-dialog h3 {
+    margin: 0 0 var(--spacing-md);
+    color: var(--text-primary);
+    font-size: 1.5rem;
+}
+
+.confirm-dialog p {
+    margin: 0 0 var(--spacing-xl);
+    color: var(--text-secondary);
+    line-height: 1.5;
+}
+
+.confirm-dialog-buttons {
+    display: flex;
+    justify-content: flex-end;
+    gap: var(--spacing-md);
+}
+
+.confirm-dialog .button {
+    padding: var(--spacing-sm) var(--spacing-lg);
+    border: none;
+    border-radius: var(--radius-sm);
+    cursor: pointer;
+    font-size: 1rem;
+    transition: all var(--transition-fast);
+}
+
+.confirm-dialog .button.confirm {
+    background-color: var(--accent-primary);
+    color: var(--text-tertiary);
+}
+
+.confirm-dialog .button.confirm:hover {
+    background-color: var(--accent-secondary);
+}
+
+.confirm-dialog .button.danger {
+    background-color: var(--error-color);
+    color: white;
+}
+
+.confirm-dialog .button.danger:hover {
+    background-color: #a33;
+}
+
+.confirm-dialog .button.cancel {
+    background-color: var(--bg-secondary);
+    color: var(--text-primary);
+}
+
+.confirm-dialog .button.cancel:hover {
+    background-color: var(--bg-primary);
+}
+
+@media (max-width: 480px) {
+    .confirm-dialog-content {
+        width: calc(100% - 32px);
+        padding: var(--spacing-lg);
+    }
+
+    .confirm-dialog-buttons {
+        flex-direction: column;
+    }
+
+    .confirm-dialog .button {
+        width: 100%;
+    }
+}
\ No newline at end of file
diff --git a/assets/js/admin.js b/assets/js/admin.js
index 9985767..ab9a043 100644
--- a/assets/js/admin.js
+++ b/assets/js/admin.js
@@ -16,7 +16,17 @@ document.addEventListener('DOMContentLoaded', function() {
     function confirmDeletion(storyId) {
         const storyCard = document.querySelector(`[data-id="${storyId}"]`).closest('.story-item');
         const title = storyCard.querySelector('h2').textContent;
-        return confirm(`Voulez-vous vraiment supprimer le roman "${title}" ? Cette action est irréversible.`);
+        
+        confirmDialog.show({
+            title: 'Suppression du roman',
+            message: `Voulez-vous vraiment supprimer le roman "${title}" ? Cette action est irréversible.`,
+            confirmText: 'Supprimer',
+            confirmClass: 'danger',
+            onConfirm: async () => {
+                await deleteStory(storyId);
+            }
+        });
+        return false; // Pour empêcher l'exécution immédiate
     }
 
     // Suppression d'un roman via l'API
@@ -78,9 +88,15 @@ document.addEventListener('DOMContentLoaded', function() {
     const logoutForm = document.querySelector('.logout-form');
     if (logoutForm) {
         logoutForm.addEventListener('submit', (e) => {
-            if (!confirm('Voulez-vous vraiment vous déconnecter ?')) {
-                e.preventDefault();
-            }
+            e.preventDefault();
+            confirmDialog.show({
+                title: 'Confirmation de déconnexion',
+                message: 'Voulez-vous vraiment vous déconnecter ?',
+                confirmText: 'Se déconnecter',
+                onConfirm: () => {
+                    logoutForm.submit();
+                }
+            });
         });
     }
 
diff --git a/assets/js/dialog.js b/assets/js/dialog.js
new file mode 100644
index 0000000..2781108
--- /dev/null
+++ b/assets/js/dialog.js
@@ -0,0 +1,145 @@
+class ConfirmDialog {
+    constructor() {
+        this.createDialog();
+    }
+
+    createDialog() {
+        // Création du conteneur principal
+        this.dialog = document.createElement('div');
+        this.dialog.className = 'confirm-dialog';
+        this.dialog.style.display = 'none';
+
+        // Création du contenu
+        const content = document.createElement('div');
+        content.className = 'confirm-dialog-content';
+
+        // En-tête avec titre
+        this.title = document.createElement('h3');
+        content.appendChild(this.title);
+
+        // Message
+        this.message = document.createElement('p');
+        content.appendChild(this.message);
+
+        // Conteneur des boutons
+        const buttons = document.createElement('div');
+        buttons.className = 'confirm-dialog-buttons';
+
+        // Bouton Confirmer
+        this.confirmButton = document.createElement('button');
+        this.confirmButton.className = 'button confirm';
+        buttons.appendChild(this.confirmButton);
+
+        // Bouton Annuler
+        this.cancelButton = document.createElement('button');
+        this.cancelButton.className = 'button cancel';
+        this.cancelButton.textContent = 'Annuler';
+        buttons.appendChild(this.cancelButton);
+
+        content.appendChild(buttons);
+        this.dialog.appendChild(content);
+        document.body.appendChild(this.dialog);
+
+        // Fermeture au clic en dehors
+        this.dialog.addEventListener('click', (e) => {
+            if (e.target === this.dialog) {
+                this.hide();
+            }
+        });
+
+        // Fermeture avec Echap
+        document.addEventListener('keydown', (e) => {
+            if (e.key === 'Escape' && this.dialog.style.display === 'block') {
+                this.hide();
+            }
+        });
+    }
+
+    show(options) {
+        const defaults = {
+            title: 'Confirmation',
+            message: 'Êtes-vous sûr ?',
+            confirmText: 'Confirmer',
+            confirmClass: 'confirm',
+            cancelText: 'Annuler',
+            onConfirm: () => {},
+            onCancel: () => {}
+        };
+
+        const settings = { ...defaults, ...options };
+
+        this.title.textContent = settings.title;
+        this.message.textContent = settings.message;
+        this.confirmButton.textContent = settings.confirmText;
+        this.confirmButton.className = `button ${settings.confirmClass}`;
+
+        // Réinitialisation des événements
+        const newConfirmBtn = this.confirmButton.cloneNode(true);
+        const newCancelBtn = this.cancelButton.cloneNode(true);
+        this.confirmButton.parentNode.replaceChild(newConfirmBtn, this.confirmButton);
+        this.cancelButton.parentNode.replaceChild(newCancelBtn, this.cancelButton);
+        this.confirmButton = newConfirmBtn;
+        this.cancelButton = newCancelBtn;
+
+        // Nouveaux gestionnaires d'événements
+        this.confirmButton.addEventListener('click', () => {
+            settings.onConfirm();
+            this.hide();
+        });
+
+        this.cancelButton.addEventListener('click', () => {
+            settings.onCancel();
+            this.hide();
+        });
+
+        // Affichage avec animation
+        this.dialog.style.display = 'block';
+        requestAnimationFrame(() => {
+            this.dialog.classList.add('show');
+        });
+    }
+
+    hide() {
+        this.dialog.classList.remove('show');
+        setTimeout(() => {
+            this.dialog.style.display = 'none';
+        }, 200);
+    }
+}
+
+// Création d'une instance globale
+const confirmDialog = new ConfirmDialog();
+
+// Exemple d'utilisation pour la suppression d'un chapitre
+document.querySelectorAll('.delete-chapter').forEach(button => {
+    button.addEventListener('click', (e) => {
+        const chapterTitle = e.target.closest('.chapter-item').querySelector('.chapter-title').textContent;
+        
+        confirmDialog.show({
+            title: 'Supprimer le chapitre',
+            message: `Voulez-vous vraiment supprimer le chapitre "${chapterTitle}" ? Cette action est irréversible.`,
+            confirmText: 'Supprimer',
+            confirmClass: 'danger',
+            onConfirm: () => {
+                // Code de suppression existant
+            }
+        });
+    });
+});
+
+// Exemple d'utilisation pour la suppression d'un roman
+document.querySelectorAll('.delete-story').forEach(button => {
+    button.addEventListener('click', (e) => {
+        const storyTitle = e.target.closest('.story-item').querySelector('h2').textContent;
+        
+        confirmDialog.show({
+            title: 'Supprimer le roman',
+            message: `Voulez-vous vraiment supprimer le roman "${storyTitle}" ? Cette action est irréversible.`,
+            confirmText: 'Supprimer',
+            confirmClass: 'danger',
+            onConfirm: () => {
+                // Code de suppression existant
+            }
+        });
+    });
+});
\ No newline at end of file
diff --git a/assets/js/story-edit.js b/assets/js/story-edit.js
index 1f07b64..fc4e61f 100644
--- a/assets/js/story-edit.js
+++ b/assets/js/story-edit.js
@@ -183,11 +183,17 @@ document.addEventListener('DOMContentLoaded', function() {
     if (cancelEditBtn) {
         cancelEditBtn.addEventListener('click', () => {
             if (hasUnsavedChanges()) {
-                if (!confirm('Des modifications non sauvegardées seront perdues. Voulez-vous vraiment fermer ?')) {
-                    return;
-                }
+                confirmDialog.show({
+                    title: 'Modifications non sauvegardées',
+                    message: 'Des modifications non sauvegardées seront perdues. Voulez-vous vraiment fermer ?',
+                    confirmText: 'Fermer sans sauvegarder',
+                    onConfirm: () => {
+                        modal.style.display = 'none';
+                    }
+                });
+            } else {
+                modal.style.display = 'none';
             }
-            modal.style.display = 'none';
         });
     }
 
@@ -241,41 +247,44 @@ document.addEventListener('DOMContentLoaded', function() {
                 const chapterItem = target.closest('.chapter-item');
                 const chapterId = chapterItem.dataset.id;
                 const chapterTitle = chapterItem.querySelector('.chapter-title').textContent;
-
-                if (confirm(`Voulez-vous vraiment supprimer le chapitre "${chapterTitle}" ? Cette action est irréversible.`)) {
-                    try {
-                        const response = await fetch('api/delete-chapter.php', {
-                            method: 'POST',
-                            headers: {
-                                'Content-Type': 'application/json',
-                            },
-                            body: JSON.stringify({
-                                storyId: storyId,
-                                chapterId: chapterId
-                            })
-                        });
-
-                        if (!response.ok) {
-                            throw new Error('Erreur réseau');
+            
+                confirmDialog.show({
+                    title: 'Suppression du chapitre',
+                    message: `Voulez-vous vraiment supprimer le chapitre "${chapterTitle}" ? Cette action est irréversible.`,
+                    confirmText: 'Supprimer',
+                    confirmClass: 'danger',
+                    onConfirm: async () => {
+                        try {
+                            const response = await fetch('api/delete-chapter.php', {
+                                method: 'POST',
+                                headers: {
+                                    'Content-Type': 'application/json',
+                                },
+                                body: JSON.stringify({
+                                    storyId: storyId,
+                                    chapterId: chapterId
+                                })
+                            });
+            
+                            if (!response.ok) throw new Error('Erreur réseau');
+            
+                            const result = await response.json();
+                            if (result.success) {
+                                chapterItem.style.opacity = '0';
+                                chapterItem.style.transform = 'translateX(-100%)';
+                                setTimeout(() => {
+                                    chapterItem.remove();
+                                    showNotification('Chapitre supprimé avec succès');
+                                }, 300);
+                            } else {
+                                throw new Error(result.error || 'Erreur lors de la suppression');
+                            }
+                        } catch (error) {
+                            console.error('Erreur:', error);
+                            showNotification(error.message, 'error');
                         }
-
-                        const result = await response.json();
-                        if (result.success) {
-                            // Animation de suppression
-                            chapterItem.style.opacity = '0';
-                            chapterItem.style.transform = 'translateX(-100%)';
-                            setTimeout(() => {
-                                chapterItem.remove();
-                                showNotification('Chapitre supprimé avec succès');
-                            }, 300);
-                        } else {
-                            throw new Error(result.error || 'Erreur lors de la suppression');
-                        }
-                    } catch (error) {
-                        console.error('Erreur:', error);
-                        showNotification(error.message, 'error');
                     }
-                }
+                });
             }
         });
     }