diff --git a/app.json b/app.json
index e6895e9..3f3eb56 100644
--- a/app.json
+++ b/app.json
@@ -38,7 +38,8 @@
         }
       ],
       "expo-image",
-      "expo-font"
+      "expo-font",
+      "expo-secure-store"
     ],
     "experiments": {
       "typedRoutes": true,
diff --git a/package-lock.json b/package-lock.json
index 8ac4890..09798bb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,6 +27,7 @@
         "expo-linear-gradient": "~56.0.4",
         "expo-linking": "~56.0.12",
         "expo-router": "~56.2.7",
+        "expo-secure-store": "~56.0.4",
         "expo-splash-screen": "~56.0.10",
         "expo-status-bar": "~56.0.4",
         "expo-symbols": "~56.0.5",
@@ -5124,6 +5125,15 @@
         }
       }
     },
+    "node_modules/expo-secure-store": {
+      "version": "56.0.4",
+      "resolved": "https://registry.npmjs.org/expo-secure-store/-/expo-secure-store-56.0.4.tgz",
+      "integrity": "sha512-hjEi/gmpdFFJ9lYbdp3k3p/WchV7Gi0Qt8jt/m/0WJadqQrskafHAlDxbZkII1cN3Yd7zp9Lvkeq3UfGhSwirQ==",
+      "license": "MIT",
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-server": {
       "version": "56.0.4",
       "resolved": "https://registry.npmjs.org/expo-server/-/expo-server-56.0.4.tgz",
diff --git a/package.json b/package.json
index c53c047..4f0a2e4 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "expo-linear-gradient": "~56.0.4",
     "expo-linking": "~56.0.12",
     "expo-router": "~56.2.7",
+    "expo-secure-store": "~56.0.4",
     "expo-splash-screen": "~56.0.10",
     "expo-status-bar": "~56.0.4",
     "expo-symbols": "~56.0.5",
diff --git a/src/app/(auth)/_layout.tsx b/src/app/(auth)/_layout.tsx
new file mode 100644
index 0000000..c99d790
--- /dev/null
+++ b/src/app/(auth)/_layout.tsx
@@ -0,0 +1,13 @@
+import { useAuth } from '@/stores/authStore';
+import { Redirect, Stack } from 'expo-router';
+
+export default function AuthLayout() {
+    const session = useAuth((state) => state.session);
+
+    if (session) {
+        const href = (session.role === 'org' ? '/(org)' : '/(tabs)') as any;
+        return <Redirect href={href} />;
+    }
+
+    return <Stack screenOptions={{ headerShown: false}} />;
+}
\ No newline at end of file
diff --git a/src/app/(auth)/interets.tsx b/src/app/(auth)/interets.tsx
new file mode 100644
index 0000000..91e253c
--- /dev/null
+++ b/src/app/(auth)/interets.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function InteretsScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Interets</Text>
+			<Text style={styles.description}>Base ecran interets</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(auth)/login.tsx b/src/app/(auth)/login.tsx
new file mode 100644
index 0000000..71a653b
--- /dev/null
+++ b/src/app/(auth)/login.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function LoginScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Login</Text>
+			<Text style={styles.description}>Base ecran login</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(auth)/onboarding.tsx b/src/app/(auth)/onboarding.tsx
new file mode 100644
index 0000000..1b56b82
--- /dev/null
+++ b/src/app/(auth)/onboarding.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function OnboardingScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Onboarding</Text>
+			<Text style={styles.description}>Base ecran onboarding</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(org)/_layout.tsx b/src/app/(org)/_layout.tsx
new file mode 100644
index 0000000..da5f029
--- /dev/null
+++ b/src/app/(org)/_layout.tsx
@@ -0,0 +1,12 @@
+import { useAuth } from '@/stores/authStore';
+import { Redirect, Stack } from 'expo-router';
+
+export default function OrgLayout() {
+    const session = useAuth((state) => state.session);
+
+    if (!session) return <Redirect href="../(auth)/login" />;
+
+    if (session.role !== 'org') return <Redirect href="../(tabs)" />;
+
+    return <Stack screenOptions={{ headerShown: false }} />;
+}
\ No newline at end of file
diff --git a/src/app/(org)/events.tsx b/src/app/(org)/events.tsx
new file mode 100644
index 0000000..681dd65
--- /dev/null
+++ b/src/app/(org)/events.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function OrgEventsScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Org Events</Text>
+			<Text style={styles.description}>Base ecran events organisateur</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(org)/index.tsx b/src/app/(org)/index.tsx
new file mode 100644
index 0000000..b5272fd
--- /dev/null
+++ b/src/app/(org)/index.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function OrgHomeScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Org Home</Text>
+			<Text style={styles.description}>Base ecran organisation</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(org)/profile.tsx b/src/app/(org)/profile.tsx
new file mode 100644
index 0000000..f6313fa
--- /dev/null
+++ b/src/app/(org)/profile.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function OrgProfileScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Org Profile</Text>
+			<Text style={styles.description}>Base ecran profil organisateur</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(org)/stats.tsx b/src/app/(org)/stats.tsx
new file mode 100644
index 0000000..e4eda4a
--- /dev/null
+++ b/src/app/(org)/stats.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function OrgStatsScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Org Stats</Text>
+			<Text style={styles.description}>Base ecran statistiques organisateur</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(tabs)/_layout.tsx b/src/app/(tabs)/_layout.tsx
new file mode 100644
index 0000000..d9ec0e3
--- /dev/null
+++ b/src/app/(tabs)/_layout.tsx
@@ -0,0 +1,12 @@
+import { useAuth } from '@/stores/authStore';
+import { Redirect, Stack } from 'expo-router';
+
+export default function TabsLayout() {
+    const session = useAuth((state) => state.session);
+
+    if (!session) return <Redirect href="../(auth)/login" />;
+
+    if (session.role === 'org') return <Redirect href="../(org)" />;
+
+    return <Stack screenOptions={{ headerShown: false}} />;
+}
\ No newline at end of file
diff --git a/src/app/(tabs)/index.tsx b/src/app/(tabs)/index.tsx
new file mode 100644
index 0000000..0ea7e14
--- /dev/null
+++ b/src/app/(tabs)/index.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function HomeTabScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Accueil</Text>
+			<Text style={styles.description}>Base ecran accueil tab</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(tabs)/map.tsx b/src/app/(tabs)/map.tsx
new file mode 100644
index 0000000..7a06fa6
--- /dev/null
+++ b/src/app/(tabs)/map.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function MapTabScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Map</Text>
+			<Text style={styles.description}>Base ecran carte</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(tabs)/my-events.tsx b/src/app/(tabs)/my-events.tsx
new file mode 100644
index 0000000..0574acc
--- /dev/null
+++ b/src/app/(tabs)/my-events.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function MyEventsTabScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>My Events</Text>
+			<Text style={styles.description}>Base ecran mes events</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/(tabs)/profile.tsx b/src/app/(tabs)/profile.tsx
new file mode 100644
index 0000000..1929747
--- /dev/null
+++ b/src/app/(tabs)/profile.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function ProfileTabScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Profile</Text>
+			<Text style={styles.description}>Base ecran profil tab</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/_layout.tsx b/src/app/_layout.tsx
index 4ee59c7..ade1a9d 100644
--- a/src/app/_layout.tsx
+++ b/src/app/_layout.tsx
@@ -1,9 +1,17 @@
 import { QueryClientProvider } from '@tanstack/react-query';
 import { Stack } from 'expo-router';
+import * as SplashScreen from 'expo-splash-screen';
+import { StatusBar } from 'expo-status-bar';
+import { useEffect } from 'react';
+import { SafeAreaProvider } from 'react-native-safe-area-context';
 
 import { queryClient } from '../hooks/queryClient';
 import { useAppFonts } from '../theme/typography';
 
+import { useAuth } from '@/stores/authStore';
+
+SplashScreen.preventAutoHideAsync();
+
 export default function RootLayout() {
   const [fontsLoaded] = useAppFonts();
 
@@ -11,9 +19,33 @@ export default function RootLayout() {
     return null;
   }
 
+  const hydrated = useAuth((state) => state.hydrated);
+  const hydrate = useAuth((state) => state.hydrate);
+
+  useEffect(() => { hydrate(); }, []);
+
+  const ready = hydrated && fontsLoaded;
+
+  useEffect(() => {
+    if (ready) SplashScreen.hideAsync();
+  }, [ready]);
+
+  if (!ready) return null;
+
   return (
     <QueryClientProvider client={queryClient}>
-      <Stack />
+      <SafeAreaProvider>
+        <StatusBar style="auto" />
+        <Stack screenOptions={{ headerShown: false, contentStyle: { backgroundColor: '#0B0B12' } }}>
+          <Stack.Screen name="(auth)" />
+          <Stack.Screen name="(tabs)" />
+          <Stack.Screen name="(org)" />
+          <Stack.Screen name="event/[id]" />
+          <Stack.Screen name="create/event" options={{ presentation: 'modal' }} />
+          <Stack.Screen name="create/post"  options={{ presentation: 'modal' }} />
+        </Stack>
+        
+      </SafeAreaProvider>
     </QueryClientProvider>
   );
 }
diff --git a/src/app/create/event.tsx b/src/app/create/event.tsx
new file mode 100644
index 0000000..ede95c8
--- /dev/null
+++ b/src/app/create/event.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function CreateEventScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Create Event</Text>
+			<Text style={styles.description}>Base ecran creation event</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/create/post.tsx b/src/app/create/post.tsx
new file mode 100644
index 0000000..1838c8b
--- /dev/null
+++ b/src/app/create/post.tsx
@@ -0,0 +1,32 @@
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function CreatePostScreen() {
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Create Post</Text>
+			<Text style={styles.description}>Base ecran creation post</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+});
diff --git a/src/app/event/[id].tsx b/src/app/event/[id].tsx
new file mode 100644
index 0000000..1c9c1b8
--- /dev/null
+++ b/src/app/event/[id].tsx
@@ -0,0 +1,41 @@
+import { useLocalSearchParams } from 'expo-router';
+import { StyleSheet, Text, View } from 'react-native';
+
+import { colors } from '@/theme/colors';
+import { spacing } from '@/theme/spacing';
+import { typography } from '@/theme/typography';
+
+export default function EventDetailScreen() {
+	const { id } = useLocalSearchParams<{ id?: string | string[] }>();
+	const eventId = Array.isArray(id) ? id[0] : id;
+
+	return (
+		<View style={styles.container}>
+			<Text style={styles.title}>Event Detail</Text>
+			<Text style={styles.description}>Base ecran detail event</Text>
+			<Text style={styles.meta}>ID: {eventId ?? 'non defini'}</Text>
+		</View>
+	);
+}
+
+const styles = StyleSheet.create({
+	container: {
+		flex: 1,
+		backgroundColor: colors.deepBackground,
+		padding: spacing[24],
+		justifyContent: 'center',
+		gap: spacing[8],
+	},
+	title: {
+		...typography.screenTitle,
+		color: colors.textPrimary,
+	},
+	description: {
+		...typography.body,
+		color: colors.textSecondary,
+	},
+	meta: {
+		...typography.metadata,
+		color: colors.textStrong,
+	},
+});
diff --git a/src/stores/authStore.ts b/src/stores/authStore.ts
new file mode 100644
index 0000000..0e0a1c0
--- /dev/null
+++ b/src/stores/authStore.ts
@@ -0,0 +1,39 @@
+import * as SecureStore from 'expo-secure-store';
+import { create } from 'zustand';
+
+export type Role = 'user' | 'org';
+export type Session = {
+    userId: string;
+    token: string;
+    role: Role;
+}
+
+type AuthState = {
+    session: Session | null;
+    hydrated: boolean; // Le disque a été lu, la réponse est fiable
+    hydrate: () => Promise<void>;
+    signIn: (session: Session) => Promise<void>;
+    signOut: () => Promise<void>;
+};
+
+const KEY = 'bahla.session';
+
+export const useAuth = create<AuthState>((set) => ({
+    session: null,
+    hydrated: false,
+    
+    hydrate: async () => {
+        const session = await SecureStore.getItemAsync(KEY);
+        set({ session: session ? JSON.parse(session) : null, hydrated: true });
+    },
+
+    signIn: async (s: Session) => {
+        await SecureStore.setItemAsync(KEY, JSON.stringify(s));
+        set({ session: s });
+    },
+    
+    signOut: async () => {
+        await SecureStore.deleteItemAsync(KEY);
+        set({ session: null });
+    },
+}));
\ No newline at end of file