diff --git a/src/components/kanban/TaskCard.tsx b/src/components/kanban/TaskCard.tsx
index 4e21fed..339b14d 100644
--- a/src/components/kanban/TaskCard.tsx
+++ b/src/components/kanban/TaskCard.tsx
@@ -1,6 +1,6 @@
-import { useTransition } from 'react';
+import { useTransition, useState } from 'react';
 import { Task } from '@/lib/types';
-import { TaskCard as UITaskCard } from '@/components/ui/TaskCard';
+import { TaskCard as UITaskCard, ConfirmModal } from '@/components/ui';
 import { useTasksContext } from '@/contexts/TasksContext';
 import { useUserPreferences } from '@/contexts/UserPreferencesContext';
 import { useDraggable } from '@dnd-kit/core';
@@ -14,6 +14,7 @@ interface TaskCardProps {
 
 export function TaskCard({ task, onEdit, compactView = false }: TaskCardProps) {
   const [isPending, startTransition] = useTransition();
+  const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
   const { tags: availableTags, refreshTasks } = useTasksContext();
   const { preferences } = useUserPreferences();
 
@@ -23,17 +24,19 @@ export function TaskCard({ task, onEdit, compactView = false }: TaskCardProps) {
       id: task.id,
     });
 
-  const handleDelete = async () => {
-    if (window.confirm('Êtes-vous sûr de vouloir supprimer cette tâche ?')) {
-      startTransition(async () => {
-        const result = await deleteTask(task.id);
-        if (!result.success) {
-          console.error('Error deleting task:', result.error);
-        } else {
-          await refreshTasks();
-        }
-      });
-    }
+  const handleDelete = () => {
+    setShowDeleteConfirm(true);
+  };
+
+  const confirmDelete = async () => {
+    startTransition(async () => {
+      const result = await deleteTask(task.id);
+      if (!result.success) {
+        console.error('Error deleting task:', result.error);
+      } else {
+        await refreshTasks();
+      }
+    });
   };
 
   const handleEdit = () => {
@@ -61,36 +64,50 @@ export function TaskCard({ task, onEdit, compactView = false }: TaskCardProps) {
     : undefined;
 
   return (
-    <UITaskCard
-      ref={setNodeRef}
-      style={style}
-      variant={compactView ? 'compact' : 'detailed'}
-      source={task.source || 'manual'}
-      title={task.title}
-      description={task.description}
-      tags={task.tags}
-      priority={task.priority}
-      status={task.status}
-      dueDate={task.dueDate}
-      completedAt={task.completedAt}
-      jiraKey={task.jiraKey}
-      jiraProject={task.jiraProject}
-      jiraType={task.jiraType}
-      tfsPullRequestId={task.tfsPullRequestId}
-      tfsProject={task.tfsProject}
-      tfsRepository={task.tfsRepository}
-      todosCount={task.todosCount}
-      isDragging={isDragging}
-      isPending={isPending}
-      onEdit={handleEdit}
-      onDelete={handleDelete}
-      onTitleSave={handleTitleSave}
-      fontSize={preferences.viewPreferences.fontSize}
-      availableTags={availableTags}
-      jiraConfig={preferences.jiraConfig}
-      tfsConfig={preferences.tfsConfig}
-      {...attributes}
-      {...listeners}
-    />
+    <>
+      <UITaskCard
+        ref={setNodeRef}
+        style={style}
+        variant={compactView ? 'compact' : 'detailed'}
+        source={task.source || 'manual'}
+        title={task.title}
+        description={task.description}
+        tags={task.tags}
+        priority={task.priority}
+        status={task.status}
+        dueDate={task.dueDate}
+        completedAt={task.completedAt}
+        jiraKey={task.jiraKey}
+        jiraProject={task.jiraProject}
+        jiraType={task.jiraType}
+        tfsPullRequestId={task.tfsPullRequestId}
+        tfsProject={task.tfsProject}
+        tfsRepository={task.tfsRepository}
+        todosCount={task.todosCount}
+        isDragging={isDragging}
+        isPending={isPending}
+        onEdit={handleEdit}
+        onDelete={handleDelete}
+        onTitleSave={handleTitleSave}
+        fontSize={preferences.viewPreferences.fontSize}
+        availableTags={availableTags}
+        jiraConfig={preferences.jiraConfig}
+        tfsConfig={preferences.tfsConfig}
+        {...attributes}
+        {...listeners}
+      />
+      
+      <ConfirmModal
+        isOpen={showDeleteConfirm}
+        onClose={() => setShowDeleteConfirm(false)}
+        onConfirm={confirmDelete}
+        title="Supprimer la tâche"
+        message="Êtes-vous sûr de vouloir supprimer cette tâche ? Cette action est irréversible."
+        confirmText="Supprimer"
+        cancelText="Annuler"
+        variant="destructive"
+        isLoading={isPending}
+      />
+    </>
   );
 }
diff --git a/src/components/settings/JiraConfigForm.tsx b/src/components/settings/JiraConfigForm.tsx
index 2e89eac..89c6361 100644
--- a/src/components/settings/JiraConfigForm.tsx
+++ b/src/components/settings/JiraConfigForm.tsx
@@ -3,6 +3,7 @@
 import { useState, useEffect } from 'react';
 import { Button } from '@/components/ui/Button';
 import { Badge } from '@/components/ui/Badge';
+import { ConfirmModal } from '@/components/ui/ConfirmModal';
 import { useJiraConfig } from '@/hooks/useJiraConfig';
 import { jiraConfigClient } from '@/clients/jira-config-client';
 
@@ -21,6 +22,7 @@ export function JiraConfigForm() {
   const [isValidating, setIsValidating] = useState(false);
   const [validationResult, setValidationResult] = useState<{ type: 'success' | 'error', text: string } | null>(null);
   const [message, setMessage] = useState<{ type: 'success' | 'error', text: string } | null>(null);
+  const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
   const [showForm, setShowForm] = useState(false);
 
   // Charger les données existantes dans le formulaire
@@ -77,10 +79,10 @@ export function JiraConfigForm() {
   };
 
   const handleDelete = async () => {
-    if (!confirm('Êtes-vous sûr de vouloir supprimer la configuration Jira ?')) {
-      return;
-    }
+    setShowDeleteConfirm(true);
+  };
 
+  const confirmDelete = async () => {
     setIsSubmitting(true);
     setMessage(null);
 
@@ -444,6 +446,18 @@ export function JiraConfigForm() {
           {message.text}
         </div>
       )}
+
+      <ConfirmModal
+        isOpen={showDeleteConfirm}
+        onClose={() => setShowDeleteConfirm(false)}
+        onConfirm={confirmDelete}
+        title="Supprimer la configuration Jira"
+        message="Êtes-vous sûr de vouloir supprimer la configuration Jira ?"
+        confirmText="Supprimer"
+        cancelText="Annuler"
+        variant="destructive"
+        isLoading={isSubmitting}
+      />
     </div>
   );
 }
diff --git a/src/components/settings/TfsConfigForm.tsx b/src/components/settings/TfsConfigForm.tsx
index bec17c1..103d6fc 100644
--- a/src/components/settings/TfsConfigForm.tsx
+++ b/src/components/settings/TfsConfigForm.tsx
@@ -5,6 +5,7 @@ import { TfsConfig } from '@/services/integrations/tfs';
 import { getTfsConfig, saveTfsConfig, deleteAllTfsTasks } from '@/actions/tfs';
 import { Button } from '@/components/ui/Button';
 import { Badge } from '@/components/ui/Badge';
+import { ConfirmModal } from '@/components/ui/ConfirmModal';
 
 export function TfsConfigForm() {
   const [config, setConfig] = useState<TfsConfig>({
@@ -24,6 +25,8 @@ export function TfsConfigForm() {
   const [showForm, setShowForm] = useState(false);
   const [isLoading, setIsLoading] = useState(true);
   const [deletingTasks, setDeletingTasks] = useState(false);
+  const [showDeleteConfigConfirm, setShowDeleteConfigConfirm] = useState(false);
+  const [showDeleteTasksConfirm, setShowDeleteTasksConfirm] = useState(false);
 
   // Charger la configuration existante
   useEffect(() => {
@@ -85,10 +88,10 @@ export function TfsConfigForm() {
   };
 
   const handleDelete = async () => {
-    if (!confirm('Êtes-vous sûr de vouloir supprimer la configuration TFS ?')) {
-      return;
-    }
+    setShowDeleteConfigConfirm(true);
+  };
 
+  const confirmDeleteConfig = async () => {
     startTransition(async () => {
       setMessage(null);
       // Réinitialiser la config
@@ -171,17 +174,10 @@ export function TfsConfigForm() {
   };
 
   const handleDeleteAllTasks = async () => {
-    const confirmation = confirm(
-      'Êtes-vous sûr de vouloir supprimer TOUTES les tâches TFS de la base locale ?\n\n' +
-        'Cette action est irréversible et supprimera définitivement toutes les tâches ' +
-        'synchronisées depuis Azure DevOps/TFS.\n\n' +
-        'Cliquez sur OK pour confirmer la suppression.'
-    );
-
-    if (!confirmation) {
-      return;
-    }
+    setShowDeleteTasksConfirm(true);
+  };
 
+  const confirmDeleteAllTasks = async () => {
     try {
       setDeletingTasks(true);
       setMessage(null);
@@ -634,6 +630,30 @@ export function TfsConfigForm() {
           {message.text}
         </div>
       )}
+
+      <ConfirmModal
+        isOpen={showDeleteConfigConfirm}
+        onClose={() => setShowDeleteConfigConfirm(false)}
+        onConfirm={confirmDeleteConfig}
+        title="Supprimer la configuration TFS"
+        message="Êtes-vous sûr de vouloir supprimer la configuration TFS ?"
+        confirmText="Supprimer"
+        cancelText="Annuler"
+        variant="destructive"
+        isLoading={isPending}
+      />
+
+      <ConfirmModal
+        isOpen={showDeleteTasksConfirm}
+        onClose={() => setShowDeleteTasksConfirm(false)}
+        onConfirm={confirmDeleteAllTasks}
+        title="Supprimer toutes les tâches TFS"
+        message="Êtes-vous sûr de vouloir supprimer TOUTES les tâches TFS de la base locale ? Cette action est irréversible et supprimera définitivement toutes les tâches synchronisées depuis Azure DevOps/TFS."
+        confirmText="Supprimer définitivement"
+        cancelText="Annuler"
+        variant="destructive"
+        isLoading={deletingTasks}
+      />
     </div>
   );
 }
diff --git a/src/components/settings/tags/TagsManagement.tsx b/src/components/settings/tags/TagsManagement.tsx
index 37eb47e..88e3154 100644
--- a/src/components/settings/tags/TagsManagement.tsx
+++ b/src/components/settings/tags/TagsManagement.tsx
@@ -4,6 +4,7 @@ import { useState, useMemo } from 'react';
 import { Tag } from '@/lib/types';
 import { Card, CardContent, CardHeader } from '@/components/ui/Card';
 import { Button } from '@/components/ui/Button';
+import { ConfirmModal } from '@/components/ui/ConfirmModal';
 import { TagForm } from '@/components/forms/TagForm';
 import { TagsStats } from './TagsStats';
 import { TagsFilters } from './TagsFilters';
@@ -22,6 +23,8 @@ export function TagsManagement({ tags, onRefreshTags, onDeleteTag }: TagsManagem
   const [isCreateModalOpen, setIsCreateModalOpen] = useState(false);
   const [editingTag, setEditingTag] = useState<Tag | null>(null);
   const [deletingTagId, setDeletingTagId] = useState<string | null>(null);
+  const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
+  const [tagToDelete, setTagToDelete] = useState<Tag | null>(null);
 
   // Filtrer et trier les tags
   const filteredTags = useMemo(() => {
@@ -65,18 +68,22 @@ export function TagsManagement({ tags, onRefreshTags, onDeleteTag }: TagsManagem
   };
 
   const handleDeleteTag = async (tag: Tag) => {
-    if (!confirm(`Êtes-vous sûr de vouloir supprimer le tag "${tag.name}" ?`)) {
-      return;
-    }
+    setTagToDelete(tag);
+    setShowDeleteConfirm(true);
+  };
+
+  const confirmDeleteTag = async () => {
+    if (!tagToDelete) return;
     
-    setDeletingTagId(tag.id);
+    setDeletingTagId(tagToDelete.id);
     try {
-      await onDeleteTag(tag.id);
+      await onDeleteTag(tagToDelete.id);
       await onRefreshTags();
     } catch (error) {
       console.error('Erreur lors de la suppression:', error);
     } finally {
       setDeletingTagId(null);
+      setTagToDelete(null);
     }
   };
 
@@ -164,6 +171,21 @@ export function TagsManagement({ tags, onRefreshTags, onDeleteTag }: TagsManagem
           }}
         />
       )}
+
+      <ConfirmModal
+        isOpen={showDeleteConfirm}
+        onClose={() => {
+          setShowDeleteConfirm(false);
+          setTagToDelete(null);
+        }}
+        onConfirm={confirmDeleteTag}
+        title="Supprimer le tag"
+        message={`Êtes-vous sûr de vouloir supprimer le tag "${tagToDelete?.name}" ?`}
+        confirmText="Supprimer"
+        cancelText="Annuler"
+        variant="destructive"
+        isLoading={!!deletingTagId}
+      />
     </>
   );
 }
diff --git a/src/components/ui-showcase/sections/FeedbackSection.tsx b/src/components/ui-showcase/sections/FeedbackSection.tsx
index b7a894a..d9e923b 100644
--- a/src/components/ui-showcase/sections/FeedbackSection.tsx
+++ b/src/components/ui-showcase/sections/FeedbackSection.tsx
@@ -6,14 +6,39 @@ import { LoadingSpinner } from '@/components/ui/LoadingSpinner';
 import { ProgressBar } from '@/components/ui/ProgressBar';
 import { EmptyState } from '@/components/ui/EmptyState';
 import { DropZone } from '@/components/ui/DropZone';
+import { Modal } from '@/components/ui/Modal';
+import { ConfirmModal } from '@/components/ui/ConfirmModal';
+import { Button } from '@/components/ui/Button';
+import { useState } from 'react';
 
 export function FeedbackSection() {
+  const [showModal, setShowModal] = useState(false);
+  const [showConfirmModal, setShowConfirmModal] = useState(false);
+  const [showDestructiveConfirm, setShowDestructiveConfirm] = useState(false);
+  const [isLoading, setIsLoading] = useState(false);
+
   const alertItems: AlertItem[] = [
     { id: '1', title: 'Tâche critique', icon: '🔴', urgency: 'critical', metadata: 'Dans 1 jour' },
     { id: '2', title: 'Réunion urgente', icon: '🟠', urgency: 'high', metadata: 'Dans 2 jours' },
     { id: '3', title: 'Rappel', icon: '🟡', urgency: 'medium', metadata: 'Dans 5 jours' }
   ];
 
+  const handleConfirm = () => {
+    setIsLoading(true);
+    setTimeout(() => {
+      setIsLoading(false);
+      setShowConfirmModal(false);
+    }, 2000);
+  };
+
+  const handleDestructiveConfirm = () => {
+    setIsLoading(true);
+    setTimeout(() => {
+      setIsLoading(false);
+      setShowDestructiveConfirm(false);
+    }, 2000);
+  };
+
   return (
     <section id="feedback" className="space-y-8">
       <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
@@ -169,6 +194,37 @@ export function FeedbackSection() {
           </div>
         </div>
 
+        {/* Modals */}
+        <div className="space-y-4">
+          <h3 className="text-lg font-medium text-[var(--foreground)]">Modals</h3>
+          <div className="space-y-4">
+            <div>
+              <p className="text-sm text-[var(--muted-foreground)] mb-3">Modal de base</p>
+              <Button onClick={() => setShowModal(true)}>
+                Ouvrir Modal
+              </Button>
+            </div>
+            
+            <div>
+              <p className="text-sm text-[var(--muted-foreground)] mb-3">Modal de confirmation</p>
+              <div className="flex gap-2">
+                <Button 
+                  variant="primary" 
+                  onClick={() => setShowConfirmModal(true)}
+                >
+                  Confirmation Standard
+                </Button>
+                <Button 
+                  variant="destructive" 
+                  onClick={() => setShowDestructiveConfirm(true)}
+                >
+                  Confirmation Destructive
+                </Button>
+              </div>
+            </div>
+          </div>
+        </div>
+
         {/* Drop Zone */}
         <div className="space-y-4">
           <h3 className="text-lg font-medium text-[var(--foreground)]">Drop Zone</h3>
@@ -183,6 +239,49 @@ export function FeedbackSection() {
           </DropZone>
         </div>
       </div>
+
+      {/* Modals */}
+      <Modal 
+        isOpen={showModal} 
+        onClose={() => setShowModal(false)} 
+        title="Modal de démonstration"
+        size="md"
+      >
+        <div className="space-y-4">
+          <p className="text-[var(--foreground)]">
+            Ceci est un exemple de modal de base. Vous pouvez y mettre n&apos;importe quel contenu.
+          </p>
+          <div className="flex justify-end">
+            <Button onClick={() => setShowModal(false)}>
+              Fermer
+            </Button>
+          </div>
+        </div>
+      </Modal>
+
+      <ConfirmModal
+        isOpen={showConfirmModal}
+        onClose={() => setShowConfirmModal(false)}
+        onConfirm={handleConfirm}
+        title="Confirmer l'action"
+        message="Êtes-vous sûr de vouloir effectuer cette action ?"
+        confirmText="Confirmer"
+        cancelText="Annuler"
+        variant="primary"
+        isLoading={isLoading}
+      />
+
+      <ConfirmModal
+        isOpen={showDestructiveConfirm}
+        onClose={() => setShowDestructiveConfirm(false)}
+        onConfirm={handleDestructiveConfirm}
+        title="Supprimer définitivement"
+        message="Cette action est irréversible. Êtes-vous sûr de vouloir continuer ?"
+        confirmText="Supprimer"
+        cancelText="Annuler"
+        variant="destructive"
+        isLoading={isLoading}
+      />
     </section>
   );
 }
diff --git a/src/components/ui/ConfirmModal.tsx b/src/components/ui/ConfirmModal.tsx
new file mode 100644
index 0000000..e4c1c02
--- /dev/null
+++ b/src/components/ui/ConfirmModal.tsx
@@ -0,0 +1,60 @@
+'use client';
+
+import { Modal } from './Modal';
+import { Button } from './Button';
+
+interface ConfirmModalProps {
+  isOpen: boolean;
+  onClose: () => void;
+  onConfirm: () => void;
+  title?: string;
+  message: string;
+  confirmText?: string;
+  cancelText?: string;
+  variant?: 'primary' | 'destructive';
+  isLoading?: boolean;
+}
+
+export function ConfirmModal({
+  isOpen,
+  onClose,
+  onConfirm,
+  title = 'Confirmation',
+  message,
+  confirmText = 'Confirmer',
+  cancelText = 'Annuler',
+  variant = 'primary',
+  isLoading = false
+}: ConfirmModalProps) {
+  const handleConfirm = () => {
+    onConfirm();
+    onClose();
+  };
+
+  return (
+    <Modal isOpen={isOpen} onClose={onClose} title={title} size="sm">
+      <div className="space-y-4">
+        <p className="text-[var(--foreground)] text-sm leading-relaxed">
+          {message}
+        </p>
+        
+        <div className="flex justify-end gap-2">
+          <Button
+            variant="secondary"
+            onClick={onClose}
+            disabled={isLoading}
+          >
+            {cancelText}
+          </Button>
+          <Button
+            variant={variant}
+            onClick={handleConfirm}
+            disabled={isLoading}
+          >
+            {isLoading ? 'Chargement...' : confirmText}
+          </Button>
+        </div>
+      </div>
+    </Modal>
+  );
+}
diff --git a/src/components/ui/index.ts b/src/components/ui/index.ts
index c29e1d3..f53b8a9 100644
--- a/src/components/ui/index.ts
+++ b/src/components/ui/index.ts
@@ -45,3 +45,5 @@ export { MetricsGrid } from './MetricsGrid';
 // Composants existants
 export { Card, CardHeader, CardTitle, CardContent, CardFooter } from './Card';
 export { FontSizeToggle } from './FontSizeToggle';
+export { Modal } from './Modal';
+export { ConfirmModal } from './ConfirmModal';