diff --git a/mobile/app/index.tsx b/mobile/app/index.tsx
index 3f1abec..0d26bd7 100644
--- a/mobile/app/index.tsx
+++ b/mobile/app/index.tsx
@@ -1,10 +1,11 @@
 import React, { useState, useMemo } from 'react';
-import { View, FlatList, StyleSheet, TouchableOpacity, Text, Dimensions, Image, ActivityIndicator, TextInput } from 'react-native';
+import { View, FlatList, StyleSheet, TouchableOpacity, Text, Dimensions, Image, ActivityIndicator } from 'react-native';
 import { useNavigation } from '@react-navigation/native';
 import { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import { MaterialIcons } from '@expo/vector-icons';
 import { useFiles, useFileImage } from '../hooks/useFiles';
 import { FileItem } from '../types';
+import { SearchBar, SearchFilters } from '../components/SearchBar';
 
 const NUM_COLUMNS = 3;
 const SCREEN_WIDTH = Dimensions.get('window').width;
@@ -75,15 +76,23 @@ function FileGridItem({ file, onPress }: { file: FileItem; onPress?: () => void
   );
 }
 
-function matchesQuery(file: FileItem, query: string): boolean {
+function matchesQuery(file: FileItem, query: string, filters: SearchFilters): boolean {
   if (!query) return true;
   const q = query.toLowerCase();
-  if (file.name.toLowerCase().includes(q)) return true;
-  if (file.ocrText?.toLowerCase().includes(q)) return true;
-  if (file.tags?.some((t) => {
+  if (filters.name && file.name.toLowerCase().includes(q)) return true;
+  if (filters.ocrText && file.ocrText?.toLowerCase().includes(q)) return true;
+  if (filters.tags && file.tags?.some((t) => {
     const tagName = typeof t === 'string' ? t : t.name;
     return tagName?.toLowerCase().includes(q);
   })) return true;
+  if (!filters.name && !filters.ocrText && !filters.tags) {
+    if (file.name.toLowerCase().includes(q)) return true;
+    if (file.ocrText?.toLowerCase().includes(q)) return true;
+    if (file.tags?.some((t) => {
+      const tagName = typeof t === 'string' ? t : t.name;
+      return tagName?.toLowerCase().includes(q);
+    })) return true;
+  }
   return false;
 }
 
@@ -91,12 +100,13 @@ export function HomeScreen() {
   const navigation = useNavigation<NavigationProp>();
   const { data, isLoading, error } = useFiles();
   const [searchQuery, setSearchQuery] = useState('');
+  const [filters, setFilters] = useState<SearchFilters>({ name: true, ocrText: true, tags: true });
 
   const files = data?.data ?? [];
 
   const filteredFiles = useMemo(
-    () => searchQuery.trim() ? files.filter((f) => matchesQuery(f, searchQuery)) : files,
-    [files, searchQuery]
+    () => searchQuery.trim() ? files.filter((f) => matchesQuery(f, searchQuery, filters)) : files,
+    [files, searchQuery, filters]
   );
 
   const groups = groupByDate(filteredFiles);
@@ -126,23 +136,6 @@ export function HomeScreen() {
 
   return (
     <View style={styles.container}>
-      <View style={styles.searchBar}>
-        <TextInput
-          style={styles.searchInput}
-          placeholder="Rechercher par nom, tag ou texte OCR..."
-          placeholderTextColor="#999"
-          value={searchQuery}
-          onChangeText={setSearchQuery}
-          returnKeyType="search"
-          autoCorrect={false}
-        />
-        {searchQuery.length > 0 && (
-          <TouchableOpacity onPress={() => setSearchQuery('')} style={styles.clearBtn}>
-            <Text style={styles.clearText}>✕</Text>
-          </TouchableOpacity>
-        )}
-      </View>
-
       <FlatList
         data={groupKeys}
         keyExtractor={(item) => item}
@@ -178,6 +171,14 @@ export function HomeScreen() {
         }}
       />
 
+      <SearchBar
+        query={searchQuery}
+        onQueryChange={setSearchQuery}
+        onClear={() => setSearchQuery('')}
+        filters={filters}
+        onFiltersChange={setFilters}
+      />
+
       <View style={styles.bottomNav}>
         <TouchableOpacity style={styles.navButton} onPress={() => {}}>
           <MaterialIcons name="home" size={24} color="#1976D2" />
@@ -218,31 +219,6 @@ const styles = StyleSheet.create({
     fontSize: 16,
     color: '#666',
   },
-  searchBar: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    paddingHorizontal: 16,
-    paddingTop: 12,
-    paddingBottom: 8,
-  },
-  searchInput: {
-    flex: 1,
-    backgroundColor: '#fff',
-    borderRadius: 10,
-    paddingHorizontal: 14,
-    paddingVertical: 10,
-    fontSize: 15,
-    borderWidth: 1,
-    borderColor: '#e0e0e0',
-  },
-  clearBtn: {
-    marginLeft: 8,
-    padding: 6,
-  },
-  clearText: {
-    fontSize: 18,
-    color: '#999',
-  },
   list: {
     padding: 16,
     paddingBottom: 80,
diff --git a/mobile/components/SearchBar.tsx b/mobile/components/SearchBar.tsx
new file mode 100644
index 0000000..2b79190
--- /dev/null
+++ b/mobile/components/SearchBar.tsx
@@ -0,0 +1,180 @@
+import React, { useRef, useEffect } from 'react';
+import { View, TextInput, TouchableOpacity, Text, StyleSheet, Animated } from 'react-native';
+import { MaterialIcons } from '@expo/vector-icons';
+import type { ComponentProps } from 'react';
+
+type IconName = ComponentProps<typeof MaterialIcons>['name'];
+
+export interface SearchFilters {
+  name: boolean;
+  ocrText: boolean;
+  tags: boolean;
+}
+
+interface SearchBarProps {
+  query: string;
+  onQueryChange: (q: string) => void;
+  onClear: () => void;
+  filters: SearchFilters;
+  onFiltersChange: (f: SearchFilters) => void;
+}
+
+const FILTER_OPTIONS: { key: keyof SearchFilters; label: string; icon: IconName }[] = [
+  { key: 'name', label: 'Nom', icon: 'drive-file-rename-outline' },
+  { key: 'ocrText', label: 'Texte OCR', icon: 'document-scanner' },
+  { key: 'tags', label: 'Tags', icon: 'label-outline' },
+];
+
+export function SearchBar({ query, onQueryChange, onClear, filters, onFiltersChange }: SearchBarProps) {
+  const animatedHeight = useRef(new Animated.Value(0)).current;
+  const [panelOpen, setPanelOpen] = React.useState(false);
+
+  useEffect(() => {
+    Animated.spring(animatedHeight, {
+      toValue: panelOpen ? 1 : 0,
+      useNativeDriver: false,
+      tension: 60,
+      friction: 8,
+    }).start();
+  }, [panelOpen]);
+
+  const panelMaxHeight = animatedHeight.interpolate({
+    inputRange: [0, 1],
+    outputRange: [0, 100],
+  });
+
+  const toggleFilter = (key: keyof SearchFilters) => {
+    onFiltersChange({ ...filters, [key]: !filters[key] });
+  };
+
+  const hasActiveFilter = filters.name || filters.ocrText || filters.tags;
+
+  return (
+    <View style={styles.wrapper}>
+      <View style={styles.inputRow}>
+        <View style={styles.inputContainer}>
+          <MaterialIcons name="search" size={20} color="#999" style={styles.searchIcon} />
+          <TextInput
+            style={styles.input}
+            placeholder="Rechercher..."
+            placeholderTextColor="#999"
+            value={query}
+            onChangeText={onQueryChange}
+            returnKeyType="search"
+            autoCorrect={false}
+          />
+          {query.length > 0 && (
+            <TouchableOpacity onPress={onClear} style={styles.clearBtn}>
+              <MaterialIcons name="close" size={18} color="#999" />
+            </TouchableOpacity>
+          )}
+        </View>
+
+        <TouchableOpacity
+          style={[styles.filterBtn, hasActiveFilter && styles.filterBtnActive]}
+          onPress={() => setPanelOpen(!panelOpen)}
+        >
+          <MaterialIcons
+            name="tune"
+            size={22}
+            color={hasActiveFilter ? '#fff' : '#1976D2'}
+          />
+        </TouchableOpacity>
+      </View>
+
+      <Animated.View style={[styles.filterPanel, { maxHeight: panelMaxHeight, opacity: animatedHeight }]}>
+        {FILTER_OPTIONS.map((opt) => (
+          <TouchableOpacity
+            key={opt.key}
+            style={[styles.filterChip, filters[opt.key] && styles.filterChipActive]}
+            onPress={() => toggleFilter(opt.key)}
+          >
+            <MaterialIcons
+              name={opt.icon}
+              size={16}
+              color={filters[opt.key] ? '#fff' : '#1976D2'}
+            />
+            <Text style={[styles.filterChipText, filters[opt.key] && styles.filterChipTextActive]}>
+              {opt.label}
+            </Text>
+          </TouchableOpacity>
+        ))}
+      </Animated.View>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  wrapper: {
+    backgroundColor: '#fff',
+    borderTopWidth: 1,
+    borderTopColor: '#e0e0e0',
+  },
+  inputRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    paddingHorizontal: 12,
+    paddingVertical: 10,
+    gap: 8,
+  },
+  inputContainer: {
+    flex: 1,
+    flexDirection: 'row',
+    alignItems: 'center',
+    backgroundColor: '#f5f5f5',
+    borderRadius: 10,
+    paddingHorizontal: 10,
+  },
+  searchIcon: {
+    marginRight: 6,
+  },
+  input: {
+    flex: 1,
+    paddingVertical: 8,
+    fontSize: 14,
+    color: '#333',
+  },
+  clearBtn: {
+    padding: 4,
+  },
+  filterBtn: {
+    width: 40,
+    height: 40,
+    borderRadius: 10,
+    borderWidth: 1,
+    borderColor: '#1976D2',
+    justifyContent: 'center',
+    alignItems: 'center',
+    backgroundColor: '#fff',
+  },
+  filterBtnActive: {
+    backgroundColor: '#1976D2',
+  },
+  filterPanel: {
+    flexDirection: 'row',
+    paddingHorizontal: 12,
+    paddingBottom: 10,
+    gap: 8,
+    overflow: 'hidden',
+  },
+  filterChip: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    paddingHorizontal: 12,
+    paddingVertical: 6,
+    borderRadius: 16,
+    borderWidth: 1,
+    borderColor: '#1976D2',
+    gap: 4,
+  },
+  filterChipActive: {
+    backgroundColor: '#1976D2',
+  },
+  filterChipText: {
+    fontSize: 12,
+    color: '#1976D2',
+  },
+  filterChipTextActive: {
+    color: '#fff',
+  },
+});