diff --git a/mobile/app/batch-review.tsx b/mobile/app/batch-review.tsx
index 4c06cd4..fb3ba7f 100644
--- a/mobile/app/batch-review.tsx
+++ b/mobile/app/batch-review.tsx
@@ -1,9 +1,10 @@
 import React, { useState, useCallback } from 'react';
-import { View, Text, StyleSheet, FlatList, TouchableOpacity, Image, Alert, ActivityIndicator } from 'react-native';
+import { View, Text, StyleSheet, FlatList, TouchableOpacity, Image, ActivityIndicator } from 'react-native';
 import { useRoute, useNavigation, RouteProp } from '@react-navigation/native';
 import { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import { useBatchStore } from '../hooks/useBatchStore';
 import { usePdfGeneration } from '../hooks/usePdfGeneration';
+import { ConfirmModal } from '../components/ConfirmModal';
 
 type RootStackParamList = {
   Home: undefined;
@@ -22,6 +23,7 @@ export function BatchReviewScreen() {
   const batch = getBatch(route.params.batchId);
 
   const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
+  const [confirmDeleteVisible, setConfirmDeleteVisible] = useState(false);
 
   if (!batch) {
     return (
@@ -44,22 +46,12 @@ export function BatchReviewScreen() {
 
   const handleDelete = () => {
     if (selectedCount === 0) return;
-    const label = selectedCount === 1 ? 'cette photo' : `ces ${selectedCount} photos`;
-    Alert.alert(
-      'Supprimer',
-      `Retirer ${label} du lot ?`,
-      [
-        { text: 'Annuler', style: 'cancel' },
-        {
-          text: 'Supprimer',
-          style: 'destructive',
-          onPress: () => {
-            selectedIds.forEach((id) => removePhotoFromBatch(batch.id, id));
-            setSelectedIds(new Set());
-          },
-        },
-      ]
-    );
+    setConfirmDeleteVisible(true);
+  };
+
+  const handleDeleteConfirm = () => {
+    selectedIds.forEach((id) => removePhotoFromBatch(batch.id, id));
+    setSelectedIds(new Set());
   };
 
   const handleGroup = () => {
@@ -131,6 +123,17 @@ export function BatchReviewScreen() {
           </TouchableOpacity>
         </View>
       </View>
+
+      <ConfirmModal
+        visible={confirmDeleteVisible}
+        title="Supprimer"
+        message={`Retirer ${selectedCount === 1 ? 'cette photo' : `ces ${selectedCount} photos`} du lot ?`}
+        options={[
+          { label: 'Annuler' },
+          { label: 'Supprimer', destructive: true, onPress: handleDeleteConfirm },
+        ]}
+        onClose={() => setConfirmDeleteVisible(false)}
+      />
     </View>
   );
 }
diff --git a/mobile/app/file-detail.tsx b/mobile/app/file-detail.tsx
index cd29191..632ab25 100644
--- a/mobile/app/file-detail.tsx
+++ b/mobile/app/file-detail.tsx
@@ -10,7 +10,6 @@ import {
   Pressable,
   TouchableOpacity,
   Share,
-  Alert,
 } from 'react-native';
 import { Image } from 'expo-image';
 import { MaterialIcons } from '@expo/vector-icons';
@@ -20,6 +19,7 @@ import { useFile, useDownloadFile } from '../hooks/useFiles';
 import { fileStore } from '../services/fileStore';
 import { TagChip } from '../components/TagChip';
 import { FileThumbnail } from '../components/FileThumbnail';
+import { ConfirmModal } from '../components/ConfirmModal';
 import { SyncStatusBadge } from '../components/SyncStatusBadge';
 import { GestureHandlerRootView, Gesture, GestureDetector } from 'react-native-gesture-handler';
 import Animated, { useSharedValue, useAnimatedStyle, withSpring, runOnJS } from 'react-native-reanimated';
@@ -100,6 +100,7 @@ function DetailItem({ fileId, deviceFile, onSelectImage }: { fileId: string; dev
 
   const [optionsVisible, setOptionsVisible] = useState(false);
   const [deleting, setDeleting] = useState(false);
+  const [confirmDeleteVisible, setConfirmDeleteVisible] = useState(false);
   const panelOffset = useSharedValue(PANEL_HEIGHT - PANEL_HEADER_VISIBLE);
   const panelStartY = useSharedValue(0);
   const isPanelExpanded = useSharedValue(false);
@@ -136,39 +137,30 @@ function DetailItem({ fileId, deviceFile, onSelectImage }: { fileId: string; dev
     }
   }, [uri, fileName, file?.url]);
 
+  const handleDeleteConfirm = useCallback(async () => {
+    setDeleting(true);
+    try {
+      const bid = localEntry?.backendId ?? (file as any)?.backendResourceId;
+      if (bid) {
+        await apiClient.delete(`${ENDPOINTS.RESOURCES}/${bid}`);
+        fileStore.deleteByBackendId(bid);
+      } else {
+        fileStore.deleteById(fileId);
+      }
+      if (localEntry?.localUri) {
+        await deleteAsync(localEntry.localUri, { idempotent: true });
+      }
+      downloadRegistry.remove(fileId);
+      navigation.goBack();
+    } catch {} finally {
+      setDeleting(false);
+    }
+  }, [fileName, fileId, localEntry, file, navigation]);
+
   const handleDelete = useCallback(() => {
     setOptionsVisible(false);
-    Alert.alert(
-      'Supprimer',
-      `Supprimer "${fileName}" définitivement ?`,
-      [
-        { text: 'Annuler', style: 'cancel' },
-        {
-          text: 'Supprimer',
-          style: 'destructive',
-          onPress: async () => {
-            setDeleting(true);
-            try {
-              const bid = localEntry?.backendId ?? (file as any)?.backendResourceId;
-              if (bid) {
-                await apiClient.delete(`${ENDPOINTS.RESOURCES}/${bid}`);
-                fileStore.deleteByBackendId(bid);
-              } else {
-                fileStore.deleteById(fileId);
-              }
-              if (localEntry?.localUri) {
-                await deleteAsync(localEntry.localUri, { idempotent: true });
-              }
-              downloadRegistry.remove(fileId);
-              navigation.goBack();
-            } catch {} finally {
-              setDeleting(false);
-            }
-          },
-        },
-      ],
-    );
-  }, [fileName, fileId, localEntry, file, navigation]);
+    setConfirmDeleteVisible(true);
+  }, []);
 
   const togglePanelJS = useCallback(() => {
     if (isPanelExpanded.value) {
@@ -387,6 +379,17 @@ function DetailItem({ fileId, deviceFile, onSelectImage }: { fileId: string; dev
           </View>
         </TouchableOpacity>
       </Modal>
+
+      <ConfirmModal
+        visible={confirmDeleteVisible}
+        title="Supprimer"
+        message={`Supprimer "${fileName}" définitivement ?`}
+        options={[
+          { label: 'Annuler' },
+          { label: 'Supprimer', destructive: true, onPress: handleDeleteConfirm },
+        ]}
+        onClose={() => setConfirmDeleteVisible(false)}
+      />
     </View>
   );
 }
diff --git a/mobile/app/folder.tsx b/mobile/app/folder.tsx
index c89188c..d42d44f 100644
--- a/mobile/app/folder.tsx
+++ b/mobile/app/folder.tsx
@@ -1,5 +1,5 @@
 import React, { useMemo, useState, useCallback, useEffect } from 'react';
-import { View, FlatList, StyleSheet, TouchableOpacity, Text, Dimensions, Alert, Modal, TextInput } from 'react-native';
+import { View, FlatList, StyleSheet, TouchableOpacity, Text, Dimensions, Modal, TextInput } from 'react-native';
 import { useRoute, useNavigation, RouteProp } from '@react-navigation/native';
 import { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import { MaterialIcons } from '@expo/vector-icons';
@@ -9,6 +9,7 @@ import {
   useAddTags, useMoveResources, useFolders, useCreateFolder,
 } from '../hooks/useFiles';
 import { SelectionPanel } from '../components/SelectionPanel';
+import { ConfirmModal, type ConfirmOption } from '../components/ConfirmModal';
 import { UnifiedFileItem } from '../types';
 import { isFolder } from '../types';
 import { FileThumbnail } from '../components/FileThumbnail';
@@ -104,6 +105,7 @@ export function FolderScreen() {
   const [tagModalMode, setTagModalMode] = useState<'tag' | 'folder'>('tag');
   const [tagInput, setTagInput] = useState('');
   const [moveModalVisible, setMoveModalVisible] = useState(false);
+  const [confirmDeleteState, setConfirmDeleteState] = useState<{ message: string; options: ConfirmOption[] } | null>(null);
 
   const selectionMode = selectedIds.size > 0;
 
@@ -142,12 +144,10 @@ export function FolderScreen() {
       return f?.syncStatus === 'synced';
     });
     const label = ids.length === 1 ? 'ce fichier' : `ces ${ids.length} fichiers`;
-    const options: Array<{ text: string; style?: 'default' | 'cancel' | 'destructive'; onPress?: () => void }> = [
-      { text: 'Annuler', style: 'cancel' },
-    ];
+    const options: ConfirmOption[] = [];
     if (hasSynced) {
       options.push({
-        text: 'Du device uniquement',
+        label: 'Du device uniquement',
         onPress: async () => {
           const syncedIds = ids.filter((id) => {
             const f = files.find((fi) => fi.id === id);
@@ -161,8 +161,8 @@ export function FolderScreen() {
       });
     }
     options.push({
-      text: 'Du device + serveur',
-      style: 'destructive',
+      label: 'Du device + serveur',
+      destructive: true,
       onPress: async () => {
         for (const id of ids) {
           const f = files.find((fi) => fi.id === id);
@@ -177,11 +177,12 @@ export function FolderScreen() {
           }
           downloadRegistry.remove(id);
         }
-        await queryClient.invalidateQueries({ queryKey: ['files'] });
+        await queryClient.invalidateQueries({ queryKey: ['resources'] });
         setSelectedIds(new Set());
       },
     });
-    Alert.alert('Supprimer', `Supprimer ${label} ?`, options);
+    options.push({ label: 'Annuler' });
+    setConfirmDeleteState({ message: `Supprimer ${label} ?`, options });
   }, [selectedIds, files, deleteFile, freeLocalSpace, queryClient]);
 
   const handleEdit = useCallback(() => {
@@ -358,6 +359,14 @@ export function FolderScreen() {
           </TouchableOpacity>
         </TouchableOpacity>
       </Modal>
+
+      <ConfirmModal
+        visible={confirmDeleteState !== null}
+        title="Supprimer"
+        message={confirmDeleteState?.message}
+        options={confirmDeleteState?.options ?? []}
+        onClose={() => setConfirmDeleteState(null)}
+      />
     </View>
   );
 }
diff --git a/mobile/app/index.tsx b/mobile/app/index.tsx
index e37b2c2..f8523f9 100644
--- a/mobile/app/index.tsx
+++ b/mobile/app/index.tsx
@@ -12,6 +12,7 @@ import { UnifiedFileItem, isFolder } from '../types';
 import { SearchBar, SearchFilters, MediaFilter } from '../components/SearchBar';
 import { FileThumbnail } from '../components/FileThumbnail';
 import { SettingsModal } from '../components/SettingsModal';
+import { ConfirmModal, type ConfirmOption } from '../components/ConfirmModal';
 import { UploadModal } from '../components/UploadModal';
 import { SyncStatusIcon } from '../components/SyncStatusIcon';
 import { useSyncQueue } from '../hooks/useSyncQueue';
@@ -119,6 +120,8 @@ export function HomeScreen() {
   const [uploadModalVisible, setUploadModalVisible] = useState(false);
   const [globalSyncMode, setGlobalSyncMode] = useState<SyncGlobalMode>(() => safDirectory.getGlobalSyncMode());
   const [globalSyncCellular, setGlobalSyncCellular] = useState(() => safDirectory.getGlobalSyncCellular());
+  const [confirmDeleteState, setConfirmDeleteState] = useState<{ message: string; options: ConfirmOption[] } | null>(null);
+  const [removeFolderConfirmId, setRemoveFolderConfirmId] = useState<string | null>(null);
   const { pendingCount, isSyncing } = useSyncQueue();
   useAutoSync();
 
@@ -247,12 +250,10 @@ export function HomeScreen() {
       return f?.syncStatus === 'synced';
     });
     const label = ids.length === 1 ? 'ce fichier' : `ces ${ids.length} fichiers`;
-    const options: Array<{ text: string; style?: 'default' | 'cancel' | 'destructive'; onPress?: () => void }> = [
-      { text: 'Annuler', style: 'cancel' },
-    ];
+    const options: ConfirmOption[] = [];
     if (hasSynced) {
       options.push({
-        text: 'Du device uniquement',
+        label: 'Du device uniquement',
         onPress: async () => {
           const syncedIds = ids.filter((id) => {
             const f = files.find((fi) => fi.id === id);
@@ -266,8 +267,8 @@ export function HomeScreen() {
       });
     }
     options.push({
-      text: 'Du device + serveur',
-      style: 'destructive',
+      label: 'Du device + serveur',
+      destructive: true,
       onPress: async () => {
         for (const id of ids) {
           const f = files.find((fi) => fi.id === id);
@@ -282,11 +283,12 @@ export function HomeScreen() {
           }
           downloadRegistry.remove(id);
         }
-        await queryClient.invalidateQueries({ queryKey: ['files'] });
+        await queryClient.invalidateQueries({ queryKey: ['resources'] });
         setSelectedIds(new Set());
       },
     });
-    Alert.alert('Supprimer', `Supprimer ${label} ?`, options);
+    options.push({ label: 'Annuler' });
+    setConfirmDeleteState({ message: `Supprimer ${label} ?`, options });
   }, [selectedIds, files, freeLocalSpace, queryClient]);
 
   const handleEdit = useCallback(() => {
@@ -339,22 +341,16 @@ export function HomeScreen() {
   }, [refreshFolders]);
 
   const handleRemoveFolder = useCallback((folderId: string) => {
-    Alert.alert(
-      'Supprimer le dossier',
-      'Le dossier sera retiré de la liste. Les fichiers resteront sur votre appareil.',
-      [
-        { text: 'Annuler', style: 'cancel' },
-        {
-          text: 'Supprimer',
-          style: 'destructive',
-          onPress: () => {
-            safDirectory.removeFolder(folderId);
-            refreshFolders();
-          },
-        },
-      ]
-    );
-  }, [refreshFolders]);
+    setRemoveFolderConfirmId(folderId);
+  }, []);
+
+  const handleRemoveFolderConfirm = useCallback(() => {
+    if (removeFolderConfirmId) {
+      safDirectory.removeFolder(removeFolderConfirmId);
+      refreshFolders();
+    }
+    setRemoveFolderConfirmId(null);
+  }, [removeFolderConfirmId, refreshFolders]);
 
   const handleAddFolder = useCallback(async () => {
     setSettingsModalVisible(false);
@@ -650,6 +646,25 @@ export function HomeScreen() {
         globalSyncCellular={globalSyncCellular}
         onSetGlobalSyncCellular={handleSetGlobalSyncCellular}
       />
+
+      <ConfirmModal
+        visible={confirmDeleteState !== null}
+        title="Supprimer"
+        message={confirmDeleteState?.message}
+        options={confirmDeleteState?.options ?? []}
+        onClose={() => setConfirmDeleteState(null)}
+      />
+
+      <ConfirmModal
+        visible={removeFolderConfirmId !== null}
+        title="Supprimer le dossier"
+        message="Le dossier sera retiré de la liste. Les fichiers resteront sur votre appareil."
+        options={[
+          { label: 'Annuler' },
+          { label: 'Supprimer', destructive: true, onPress: handleRemoveFolderConfirm },
+        ]}
+        onClose={() => setRemoveFolderConfirmId(null)}
+      />
     </KeyboardAvoidingView>
   );
 }
diff --git a/mobile/components/ConfirmModal.tsx b/mobile/components/ConfirmModal.tsx
new file mode 100644
index 0000000..5a2c964
--- /dev/null
+++ b/mobile/components/ConfirmModal.tsx
@@ -0,0 +1,148 @@
+import React from 'react';
+import { View, Text, StyleSheet, TouchableOpacity, Modal } from 'react-native';
+
+export interface ConfirmOption {
+  label: string;
+  onPress?: () => void;
+  destructive?: boolean;
+}
+
+interface ConfirmModalProps {
+  visible: boolean;
+  title: string;
+  message?: string;
+  options: ConfirmOption[];
+  onClose: () => void;
+}
+
+export function ConfirmModal({ visible, title, message, options, onClose }: ConfirmModalProps) {
+  const stacked = options.length > 2;
+
+  return (
+    <Modal visible={visible} transparent animationType="fade" onRequestClose={onClose}>
+      <TouchableOpacity style={styles.overlay} activeOpacity={1} onPress={onClose}>
+        <TouchableOpacity activeOpacity={1} style={styles.container} onPress={() => {}}>
+          <View style={styles.handle} />
+          <Text style={styles.title}>{title}</Text>
+          {message ? <Text style={styles.message}>{message}</Text> : null}
+          <View style={[styles.optionsContainer, stacked && styles.optionsStacked]}>
+            {options.map((opt, i) => (
+              <TouchableOpacity
+                key={i}
+                style={[
+                  stacked ? styles.stackedBtn : styles.sideBtn,
+                  opt.destructive && (stacked ? styles.stackedDestructive : styles.sideDestructive),
+                  !opt.destructive && !stacked && styles.sideBtnSecondary,
+                  !opt.destructive && stacked && styles.stackedSecondary,
+                  i < options.length - 1 && stacked && styles.stackedBtnBorder,
+                ]}
+                onPress={() => {
+                  onClose();
+                  opt.onPress?.();
+                }}
+              >
+                <Text
+                  style={[
+                    stacked ? styles.stackedBtnText : styles.sideBtnText,
+                    opt.destructive && (stacked ? styles.stackedDestructiveText : styles.sideDestructiveText),
+                    !opt.destructive && !stacked && styles.sideBtnSecondaryText,
+                    !opt.destructive && stacked && styles.stackedSecondaryText,
+                  ]}
+                >
+                  {opt.label}
+                </Text>
+              </TouchableOpacity>
+            ))}
+          </View>
+        </TouchableOpacity>
+      </TouchableOpacity>
+    </Modal>
+  );
+}
+
+const styles = StyleSheet.create({
+  overlay: {
+    flex: 1,
+    backgroundColor: 'rgba(0,0,0,0.4)',
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  container: {
+    backgroundColor: '#fff',
+    borderRadius: 16,
+    paddingHorizontal: 20,
+    paddingTop: 12,
+    paddingBottom: 20,
+    width: '85%',
+  },
+  handle: {
+    width: 36,
+    height: 4,
+    borderRadius: 2,
+    backgroundColor: '#ddd',
+    alignSelf: 'center',
+    marginBottom: 16,
+  },
+  title: {
+    fontSize: 18,
+    fontWeight: '700',
+    color: '#333',
+    marginBottom: 8,
+  },
+  message: {
+    fontSize: 14,
+    color: '#666',
+    lineHeight: 20,
+    marginBottom: 20,
+  },
+  optionsContainer: {
+    flexDirection: 'row',
+    gap: 10,
+  },
+  optionsStacked: {
+    flexDirection: 'column',
+    gap: 0,
+  },
+  sideBtn: {
+    flex: 1,
+    paddingVertical: 12,
+    borderRadius: 10,
+    alignItems: 'center',
+  },
+  sideDestructive: {
+    backgroundColor: '#E53935',
+  },
+  sideBtnSecondary: {
+    backgroundColor: '#f5f5f5',
+  },
+  sideBtnText: {
+    fontSize: 15,
+    fontWeight: '600',
+  },
+  sideDestructiveText: {
+    color: '#fff',
+  },
+  sideBtnSecondaryText: {
+    color: '#666',
+  },
+  stackedBtn: {
+    paddingVertical: 14,
+    alignItems: 'center',
+  },
+  stackedBtnBorder: {
+    borderBottomWidth: 1,
+    borderBottomColor: '#f0f0f0',
+  },
+  stackedDestructive: {},
+  stackedSecondary: {},
+  stackedBtnText: {
+    fontSize: 16,
+    fontWeight: '600',
+  },
+  stackedDestructiveText: {
+    color: '#E53935',
+  },
+  stackedSecondaryText: {
+    color: '#333',
+  },
+});
diff --git a/mobile/components/SettingsModal.tsx b/mobile/components/SettingsModal.tsx
index ba055c3..f5b1fd4 100644
--- a/mobile/components/SettingsModal.tsx
+++ b/mobile/components/SettingsModal.tsx
@@ -6,10 +6,10 @@ import {
   TouchableOpacity,
   Modal,
   ScrollView,
-  Alert,
 } from 'react-native';
 import { MaterialIcons } from '@expo/vector-icons';
 import { StoredFolder, SyncMode, SyncGlobalMode, type FolderSource } from '../services/safDirectory';
+import { ConfirmModal } from './ConfirmModal';
 
 type SettingsView = 'menu' | 'folders' | 'sync';
 
@@ -57,6 +57,7 @@ export function SettingsModal({
   onSetGlobalSyncCellular,
 }: SettingsModalProps) {
   const [view, setView] = useState<SettingsView>('menu');
+  const [confirmRemoveFolder, setConfirmRemoveFolder] = useState<StoredFolder | null>(null);
 
   const handleClose = useCallback(() => {
     setView('menu');
@@ -65,22 +66,18 @@ export function SettingsModal({
 
   const handleRemoveFolder = useCallback(
     (folder: StoredFolder) => {
-      Alert.alert(
-        'Supprimer le dossier',
-        'Le dossier sera retiré de la liste. Les fichiers resteront sur votre appareil.',
-        [
-          { text: 'Annuler', style: 'cancel' },
-          {
-            text: 'Supprimer',
-            style: 'destructive',
-            onPress: () => onRemoveFolder(folder.id),
-          },
-        ]
-      );
+      setConfirmRemoveFolder(folder);
     },
-    [onRemoveFolder]
+    []
   );
 
+  const handleRemoveFolderConfirm = useCallback(() => {
+    if (confirmRemoveFolder) {
+      onRemoveFolder(confirmRemoveFolder.id);
+    }
+    setConfirmRemoveFolder(null);
+  }, [confirmRemoveFolder, onRemoveFolder]);
+
   return (
     <Modal
       visible={visible}
@@ -128,6 +125,17 @@ export function SettingsModal({
           )}
         </TouchableOpacity>
       </TouchableOpacity>
+
+      <ConfirmModal
+        visible={confirmRemoveFolder !== null}
+        title="Supprimer le dossier"
+        message="Le dossier sera retiré de la liste. Les fichiers resteront sur votre appareil."
+        options={[
+          { label: 'Annuler' },
+          { label: 'Supprimer', destructive: true, onPress: handleRemoveFolderConfirm },
+        ]}
+        onClose={() => setConfirmRemoveFolder(null)}
+      />
     </Modal>
   );
 }