diff --git a/client/src/db/offlineDb.ts b/client/src/db/offlineDb.ts
index 57b33dfe..224794c6 100644
--- a/client/src/db/offlineDb.ts
+++ b/client/src/db/offlineDb.ts
@@ -1,5 +1,10 @@
 import Dexie, { type Table } from 'dexie';
-import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile } from '../types';
+import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile, Accommodation, TripMember, Tag, Category } from '../types';
+
+/** TripMember enriched with tripId so we can index by trip. */
+export interface CachedTripMember extends TripMember {
+  tripId: number;
+}
 
 // ── Queue + sync types ────────────────────────────────────────────────────────
 
@@ -52,6 +57,10 @@ class TrekOfflineDb extends Dexie {
   budgetItems!: Table<BudgetItem, number>;
   reservations!: Table<Reservation, number>;
   tripFiles!: Table<TripFile, number>;
+  accommodations!: Table<Accommodation, number>;
+  tripMembers!: Table<CachedTripMember, [number, number]>;
+  tags!: Table<Tag, number>;
+  categories!: Table<Category, number>;
   mutationQueue!: Table<QueuedMutation, string>;
   syncMeta!: Table<SyncMeta, number>;
   blobCache!: Table<BlobCacheEntry, string>;
@@ -72,6 +81,13 @@ class TrekOfflineDb extends Dexie {
       syncMeta:     'tripId',
       blobCache:    'url, cachedAt',
     });
+
+    this.version(2).stores({
+      accommodations: 'id, trip_id',
+      tripMembers:    '[tripId+id], tripId',
+      tags:           'id',
+      categories:     'id',
+    });
   }
 }
 
@@ -111,6 +127,23 @@ export async function upsertTripFiles(files: TripFile[]): Promise<void> {
   await offlineDb.tripFiles.bulkPut(files);
 }
 
+export async function upsertAccommodations(items: Accommodation[]): Promise<void> {
+  await offlineDb.accommodations.bulkPut(items);
+}
+
+export async function upsertTripMembers(tripId: number, members: TripMember[]): Promise<void> {
+  const rows: CachedTripMember[] = members.map(m => ({ ...m, tripId }));
+  await offlineDb.tripMembers.bulkPut(rows);
+}
+
+export async function upsertTags(tags: Tag[]): Promise<void> {
+  await offlineDb.tags.bulkPut(tags);
+}
+
+export async function upsertCategories(categories: Category[]): Promise<void> {
+  await offlineDb.categories.bulkPut(categories);
+}
+
 export async function upsertSyncMeta(meta: SyncMeta): Promise<void> {
   await offlineDb.syncMeta.put(meta);
 }
@@ -129,6 +162,8 @@ export async function clearTripData(tripId: number): Promise<void> {
       offlineDb.budgetItems,
       offlineDb.reservations,
       offlineDb.tripFiles,
+      offlineDb.accommodations,
+      offlineDb.tripMembers,
       offlineDb.mutationQueue,
       offlineDb.syncMeta,
     ],
@@ -140,6 +175,8 @@ export async function clearTripData(tripId: number): Promise<void> {
       await offlineDb.budgetItems.where('trip_id').equals(tripId).delete();
       await offlineDb.reservations.where('trip_id').equals(tripId).delete();
       await offlineDb.tripFiles.where('trip_id').equals(tripId).delete();
+      await offlineDb.accommodations.where('trip_id').equals(tripId).delete();
+      await offlineDb.tripMembers.where('tripId').equals(tripId).delete();
       await offlineDb.mutationQueue.where('tripId').equals(tripId).delete();
       await offlineDb.syncMeta.where('tripId').equals(tripId).delete();
     },
diff --git a/client/src/i18n/translations/ar.ts b/client/src/i18n/translations/ar.ts
index 3a37d8f5..33cd8b6f 100644
--- a/client/src/i18n/translations/ar.ts
+++ b/client/src/i18n/translations/ar.ts
@@ -149,6 +149,7 @@ const ar: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'الإشعارات',
   'settings.tabs.integrations': 'التكاملات',
   'settings.tabs.account': 'الحساب',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'حول',
   'settings.map': 'الخريطة',
   'settings.mapTemplate': 'قالب الخريطة',
diff --git a/client/src/i18n/translations/br.ts b/client/src/i18n/translations/br.ts
index ef89acd7..5a46ba45 100644
--- a/client/src/i18n/translations/br.ts
+++ b/client/src/i18n/translations/br.ts
@@ -144,6 +144,7 @@ const br: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Notificações',
   'settings.tabs.integrations': 'Integrações',
   'settings.tabs.account': 'Conta',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'Sobre',
   'settings.map': 'Mapa',
   'settings.mapTemplate': 'Modelo de mapa',
diff --git a/client/src/i18n/translations/cs.ts b/client/src/i18n/translations/cs.ts
index 3a0cf375..56c08001 100644
--- a/client/src/i18n/translations/cs.ts
+++ b/client/src/i18n/translations/cs.ts
@@ -145,6 +145,7 @@ const cs: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Oznámení',
   'settings.tabs.integrations': 'Integrace',
   'settings.tabs.account': 'Účet',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'O aplikaci',
   'settings.map': 'Mapy',
   'settings.mapTemplate': 'Šablona mapy',
diff --git a/client/src/i18n/translations/de.ts b/client/src/i18n/translations/de.ts
index 107b9903..3d8500c6 100644
--- a/client/src/i18n/translations/de.ts
+++ b/client/src/i18n/translations/de.ts
@@ -147,6 +147,7 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Benachrichtigungen',
   'settings.tabs.integrations': 'Integrationen',
   'settings.tabs.account': 'Konto',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'Über',
   'settings.map': 'Karte',
   'settings.mapTemplate': 'Karten-Vorlage',
diff --git a/client/src/i18n/translations/en.ts b/client/src/i18n/translations/en.ts
index 8acb2238..596b272c 100644
--- a/client/src/i18n/translations/en.ts
+++ b/client/src/i18n/translations/en.ts
@@ -147,6 +147,7 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Notifications',
   'settings.tabs.integrations': 'Integrations',
   'settings.tabs.account': 'Account',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'About',
   'settings.map': 'Map',
   'settings.mapTemplate': 'Map Template',
diff --git a/client/src/i18n/translations/es.ts b/client/src/i18n/translations/es.ts
index 518bac4e..efb64c3f 100644
--- a/client/src/i18n/translations/es.ts
+++ b/client/src/i18n/translations/es.ts
@@ -145,6 +145,7 @@ const es: Record<string, string> = {
   'settings.tabs.notifications': 'Notificaciones',
   'settings.tabs.integrations': 'Integraciones',
   'settings.tabs.account': 'Cuenta',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'Acerca de',
   'settings.map': 'Mapa',
   'settings.mapTemplate': 'Plantilla del mapa',
diff --git a/client/src/i18n/translations/fr.ts b/client/src/i18n/translations/fr.ts
index b5aaa41a..09dddc83 100644
--- a/client/src/i18n/translations/fr.ts
+++ b/client/src/i18n/translations/fr.ts
@@ -144,6 +144,7 @@ const fr: Record<string, string> = {
   'settings.tabs.notifications': 'Notifications',
   'settings.tabs.integrations': 'Intégrations',
   'settings.tabs.account': 'Compte',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'À propos',
   'settings.map': 'Carte',
   'settings.mapTemplate': 'Modèle de carte',
diff --git a/client/src/i18n/translations/hu.ts b/client/src/i18n/translations/hu.ts
index 816fe69d..00a29375 100644
--- a/client/src/i18n/translations/hu.ts
+++ b/client/src/i18n/translations/hu.ts
@@ -144,6 +144,7 @@ const hu: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Értesítések',
   'settings.tabs.integrations': 'Integrációk',
   'settings.tabs.account': 'Fiók',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'Névjegy',
   'settings.map': 'Térkép',
   'settings.mapTemplate': 'Térkép sablon',
diff --git a/client/src/i18n/translations/it.ts b/client/src/i18n/translations/it.ts
index 8c7d986e..6212d8ac 100644
--- a/client/src/i18n/translations/it.ts
+++ b/client/src/i18n/translations/it.ts
@@ -144,6 +144,7 @@ const it: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Notifiche',
   'settings.tabs.integrations': 'Integrazioni',
   'settings.tabs.account': 'Account',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'Informazioni',
   'settings.map': 'Mappa',
   'settings.mapTemplate': 'Modello Mappa',
diff --git a/client/src/i18n/translations/nl.ts b/client/src/i18n/translations/nl.ts
index ab7790bc..229ad70c 100644
--- a/client/src/i18n/translations/nl.ts
+++ b/client/src/i18n/translations/nl.ts
@@ -144,6 +144,7 @@ const nl: Record<string, string> = {
   'settings.tabs.notifications': 'Meldingen',
   'settings.tabs.integrations': 'Integraties',
   'settings.tabs.account': 'Account',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'Over',
   'settings.map': 'Kaart',
   'settings.mapTemplate': 'Kaartsjabloon',
diff --git a/client/src/i18n/translations/pl.ts b/client/src/i18n/translations/pl.ts
index a3a2953b..302801a7 100644
--- a/client/src/i18n/translations/pl.ts
+++ b/client/src/i18n/translations/pl.ts
@@ -130,6 +130,7 @@ const pl: Record<string, string | { name: string; category: string }[]> = {
   'settings.tabs.notifications': 'Powiadomienia',
   'settings.tabs.integrations': 'Integracje',
   'settings.tabs.account': 'Konto',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'O aplikacji',
   'settings.map': 'Mapa',
   'settings.mapTemplate': 'Szablon mapy',
diff --git a/client/src/i18n/translations/ru.ts b/client/src/i18n/translations/ru.ts
index 6842f015..40e093d4 100644
--- a/client/src/i18n/translations/ru.ts
+++ b/client/src/i18n/translations/ru.ts
@@ -144,6 +144,7 @@ const ru: Record<string, string> = {
   'settings.tabs.notifications': 'Уведомления',
   'settings.tabs.integrations': 'Интеграции',
   'settings.tabs.account': 'Аккаунт',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': 'О приложении',
   'settings.map': 'Карта',
   'settings.mapTemplate': 'Шаблон карты',
diff --git a/client/src/i18n/translations/zh.ts b/client/src/i18n/translations/zh.ts
index e78e4b94..d6aa8278 100644
--- a/client/src/i18n/translations/zh.ts
+++ b/client/src/i18n/translations/zh.ts
@@ -144,6 +144,7 @@ const zh: Record<string, string> = {
   'settings.tabs.notifications': '通知',
   'settings.tabs.integrations': '集成',
   'settings.tabs.account': '账户',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': '关于',
   'settings.map': '地图',
   'settings.mapTemplate': '地图模板',
diff --git a/client/src/i18n/translations/zhTw.ts b/client/src/i18n/translations/zhTw.ts
index e7393705..83d31c2e 100644
--- a/client/src/i18n/translations/zhTw.ts
+++ b/client/src/i18n/translations/zhTw.ts
@@ -144,6 +144,7 @@ const zhTw: Record<string, string> = {
   'settings.tabs.notifications': '通知',
   'settings.tabs.integrations': '整合',
   'settings.tabs.account': '帳戶',
+  'settings.tabs.offline': 'Offline',
   'settings.tabs.about': '關於',
   'settings.map': '地圖',
   'settings.mapTemplate': '地圖模板',
diff --git a/client/src/pages/DashboardPage.tsx b/client/src/pages/DashboardPage.tsx
index 9b02b285..fcc253a2 100644
--- a/client/src/pages/DashboardPage.tsx
+++ b/client/src/pages/DashboardPage.tsx
@@ -1,6 +1,7 @@
 import React, { useEffect, useState, useRef } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { tripsApi } from '../api/client'
+import { tripRepo } from '../repo/tripRepo'
 import { useAuthStore } from '../store/authStore'
 import { useSettingsStore } from '../store/settingsStore'
 import { useTranslation } from '../i18n'
@@ -713,12 +714,9 @@ export default function DashboardPage(): React.ReactElement {
   const loadTrips = async () => {
     setIsLoading(true)
     try {
-      const [active, archived] = await Promise.all([
-        tripsApi.list(),
-        tripsApi.list({ archived: 1 }),
-      ])
-      setTrips(sortTrips(active.trips))
-      setArchivedTrips(sortTrips(archived.trips))
+      const { trips, archivedTrips } = await tripRepo.list()
+      setTrips(sortTrips(trips))
+      setArchivedTrips(sortTrips(archivedTrips))
     } catch {
       toast.error(t('dashboard.toast.loadError'))
     } finally {
diff --git a/client/src/pages/FilesPage.tsx b/client/src/pages/FilesPage.tsx
index 2a6c4eac..cb48d5e1 100644
--- a/client/src/pages/FilesPage.tsx
+++ b/client/src/pages/FilesPage.tsx
@@ -1,7 +1,8 @@
 import React, { useEffect, useState } from 'react'
 import { useParams, useNavigate, Link } from 'react-router-dom'
 import { useTripStore } from '../store/tripStore'
-import { tripsApi, placesApi } from '../api/client'
+import { tripRepo } from '../repo/tripRepo'
+import { placeRepo } from '../repo/placeRepo'
 import Navbar from '../components/Layout/Navbar'
 import FileManager from '../components/Files/FileManager'
 import { ArrowLeft } from 'lucide-react'
@@ -27,8 +28,8 @@ export default function FilesPage(): React.ReactElement {
     setIsLoading(true)
     try {
       const [tripData, placesData] = await Promise.all([
-        tripsApi.get(tripId),
-        placesApi.list(tripId),
+        tripRepo.get(tripId),
+        placeRepo.list(tripId),
       ])
       setTrip(tripData.trip)
       setPlaces(placesData.places)
diff --git a/client/src/pages/SettingsPage.tsx b/client/src/pages/SettingsPage.tsx
index 1d740a25..fedcdb31 100644
--- a/client/src/pages/SettingsPage.tsx
+++ b/client/src/pages/SettingsPage.tsx
@@ -42,7 +42,7 @@ export default function SettingsPage(): React.ReactElement {
     { id: 'map', label: t('settings.tabs.map') },
     { id: 'notifications', label: t('settings.tabs.notifications') },
     ...(hasIntegrations ? [{ id: 'integrations', label: t('settings.tabs.integrations') }] : []),
-    { id: 'offline', label: t('settings.tabs.offline', 'Offline') },
+    { id: 'offline', label: t('settings.tabs.offline') },
     { id: 'account', label: t('settings.tabs.account') },
     ...(appVersion ? [{ id: 'about', label: t('settings.tabs.about') }] : []),
   ]
diff --git a/client/src/pages/TripPlannerPage.tsx b/client/src/pages/TripPlannerPage.tsx
index 069fce14..d893e308 100644
--- a/client/src/pages/TripPlannerPage.tsx
+++ b/client/src/pages/TripPlannerPage.tsx
@@ -26,6 +26,8 @@ import { useToast } from '../components/shared/Toast'
 import { Map, X, PanelLeftClose, PanelLeftOpen, PanelRightClose, PanelRightOpen, Ticket, PackageCheck, Wallet, FolderOpen, Users } from 'lucide-react'
 import { useTranslation } from '../i18n'
 import { addonsApi, accommodationsApi, authApi, tripsApi, assignmentsApi, mapsApi } from '../api/client'
+import { accommodationRepo } from '../repo/accommodationRepo'
+import { offlineDb } from '../db/offlineDb'
 import ConfirmDialog from '../components/shared/ConfirmDialog'
 import { useResizablePanels } from '../hooks/useResizablePanels'
 import { useTripWebSocket } from '../hooks/useTripWebSocket'
@@ -104,7 +106,7 @@ export default function TripPlannerPage(): React.ReactElement | null {
 
   const loadAccommodations = useCallback(() => {
     if (tripId) {
-      accommodationsApi.list(tripId).then(d => setTripAccommodations(d.accommodations || [])).catch(() => {})
+      accommodationRepo.list(tripId).then(d => setTripAccommodations(d.accommodations || [])).catch(() => {})
       tripActions.loadReservations(tripId)
     }
   }, [tripId])
@@ -192,11 +194,16 @@ export default function TripPlannerPage(): React.ReactElement | null {
       tripActions.loadTrip(tripId).catch(() => { toast.error(t('trip.toast.loadError')); navigate('/dashboard') })
       tripActions.loadFiles(tripId)
       loadAccommodations()
-      tripsApi.getMembers(tripId).then(d => {
-        // Combine owner + members into one list
-        const all = [d.owner, ...(d.members || [])].filter(Boolean)
-        setTripMembers(all)
-      }).catch(() => {})
+      if (!navigator.onLine) {
+        offlineDb.tripMembers.where('tripId').equals(Number(tripId)).toArray()
+          .then(rows => setTripMembers(rows))
+          .catch(() => {})
+      } else {
+        tripsApi.getMembers(tripId).then(d => {
+          const all = [d.owner, ...(d.members || [])].filter(Boolean)
+          setTripMembers(all)
+        }).catch(() => {})
+      }
     }
   }, [tripId])
 
diff --git a/client/src/repo/accommodationRepo.ts b/client/src/repo/accommodationRepo.ts
new file mode 100644
index 00000000..75e8c345
--- /dev/null
+++ b/client/src/repo/accommodationRepo.ts
@@ -0,0 +1,16 @@
+import { accommodationsApi } from '../api/client'
+import { offlineDb, upsertAccommodations } from '../db/offlineDb'
+import type { Accommodation } from '../types'
+
+export const accommodationRepo = {
+  async list(tripId: number | string): Promise<{ accommodations: Accommodation[] }> {
+    if (!navigator.onLine) {
+      const accommodations = await offlineDb.accommodations
+        .where('trip_id').equals(Number(tripId)).toArray()
+      return { accommodations }
+    }
+    const result = await accommodationsApi.list(tripId)
+    upsertAccommodations(result.accommodations || []).catch(() => {})
+    return result
+  },
+}
diff --git a/client/src/repo/tripRepo.ts b/client/src/repo/tripRepo.ts
index 6b6c4696..082e346a 100644
--- a/client/src/repo/tripRepo.ts
+++ b/client/src/repo/tripRepo.ts
@@ -3,6 +3,23 @@ import { offlineDb, upsertTrip } from '../db/offlineDb'
 import type { Trip } from '../types'
 
 export const tripRepo = {
+  async list(): Promise<{ trips: Trip[]; archivedTrips: Trip[] }> {
+    if (!navigator.onLine) {
+      const all = await offlineDb.trips.toArray()
+      return {
+        trips: all.filter(t => !t.is_archived),
+        archivedTrips: all.filter(t => t.is_archived),
+      }
+    }
+    const [active, archived] = await Promise.all([
+      tripsApi.list(),
+      tripsApi.list({ archived: 1 }),
+    ])
+    active.trips.forEach(t => upsertTrip(t))
+    archived.trips.forEach(t => upsertTrip(t))
+    return { trips: active.trips, archivedTrips: archived.trips }
+  },
+
   async get(tripId: number | string): Promise<{ trip: Trip }> {
     if (!navigator.onLine) {
       const cached = await offlineDb.trips.get(Number(tripId))
diff --git a/client/src/store/slices/budgetSlice.ts b/client/src/store/slices/budgetSlice.ts
index 04e58fda..9f63bc45 100644
--- a/client/src/store/slices/budgetSlice.ts
+++ b/client/src/store/slices/budgetSlice.ts
@@ -1,4 +1,5 @@
 import { budgetApi } from '../../api/client'
+import { budgetRepo } from '../../repo/budgetRepo'
 import type { StoreApi } from 'zustand'
 import type { TripStoreState } from '../tripStore'
 import type { BudgetItem, BudgetMember } from '../../types'
@@ -21,7 +22,7 @@ export interface BudgetSlice {
 export const createBudgetSlice = (set: SetState, get: GetState): BudgetSlice => ({
   loadBudgetItems: async (tripId) => {
     try {
-      const data = await budgetApi.list(tripId)
+      const data = await budgetRepo.list(tripId)
       set({ budgetItems: data.items })
     } catch (err: unknown) {
       console.error('Failed to load budget items:', err)
diff --git a/client/src/store/slices/filesSlice.ts b/client/src/store/slices/filesSlice.ts
index 07ed0deb..13617515 100644
--- a/client/src/store/slices/filesSlice.ts
+++ b/client/src/store/slices/filesSlice.ts
@@ -1,4 +1,5 @@
 import { filesApi } from '../../api/client'
+import { fileRepo } from '../../repo/fileRepo'
 import type { StoreApi } from 'zustand'
 import type { TripStoreState } from '../tripStore'
 import type { TripFile } from '../../types'
@@ -16,7 +17,7 @@ export interface FilesSlice {
 export const createFilesSlice = (set: SetState, get: GetState): FilesSlice => ({
   loadFiles: async (tripId) => {
     try {
-      const data = await filesApi.list(tripId)
+      const data = await fileRepo.list(tripId)
       set({ files: data.files })
     } catch (err: unknown) {
       console.error('Failed to load files:', err)
diff --git a/client/src/store/slices/reservationsSlice.ts b/client/src/store/slices/reservationsSlice.ts
index 536d4cb1..c020a593 100644
--- a/client/src/store/slices/reservationsSlice.ts
+++ b/client/src/store/slices/reservationsSlice.ts
@@ -1,4 +1,5 @@
 import { reservationsApi } from '../../api/client'
+import { reservationRepo } from '../../repo/reservationRepo'
 import type { StoreApi } from 'zustand'
 import type { TripStoreState } from '../tripStore'
 import type { Reservation } from '../../types'
@@ -18,7 +19,7 @@ export interface ReservationsSlice {
 export const createReservationsSlice = (set: SetState, get: GetState): ReservationsSlice => ({
   loadReservations: async (tripId) => {
     try {
-      const data = await reservationsApi.list(tripId)
+      const data = await reservationRepo.list(tripId)
       set({ reservations: data.reservations })
     } catch (err: unknown) {
       console.error('Failed to load reservations:', err)
diff --git a/client/src/store/tripStore.ts b/client/src/store/tripStore.ts
index f7588442..5168c078 100644
--- a/client/src/store/tripStore.ts
+++ b/client/src/store/tripStore.ts
@@ -1,6 +1,7 @@
 import { create } from 'zustand'
 import type { StoreApi } from 'zustand'
 import { tripsApi, tagsApi, categoriesApi } from '../api/client'
+import { offlineDb } from '../db/offlineDb'
 import { tripRepo } from '../repo/tripRepo'
 import { dayRepo } from '../repo/dayRepo'
 import { placeRepo } from '../repo/placeRepo'
@@ -94,8 +95,12 @@ export const useTripStore = create<TripStoreState>((set, get) => ({
         placeRepo.list(tripId),
         packingRepo.list(tripId),
         todoRepo.list(tripId),
-        tagsApi.list().catch(() => ({ tags: [] })),
-        categoriesApi.list().catch(() => ({ categories: [] })),
+        navigator.onLine
+          ? tagsApi.list().catch(() => offlineDb.tags.toArray().then(tags => ({ tags })))
+          : offlineDb.tags.toArray().then(tags => ({ tags })),
+        navigator.onLine
+          ? categoriesApi.list().catch(() => offlineDb.categories.toArray().then(categories => ({ categories })))
+          : offlineDb.categories.toArray().then(categories => ({ categories })),
       ])
 
       const assignmentsMap: AssignmentsMap = {}
diff --git a/client/src/sync/tripSyncManager.ts b/client/src/sync/tripSyncManager.ts
index dc868244..4129469b 100644
--- a/client/src/sync/tripSyncManager.ts
+++ b/client/src/sync/tripSyncManager.ts
@@ -10,7 +10,7 @@
  *   - trip list refresh (DashboardPage)
  *   - WS reconnect (phase 7)
  */
-import { tripsApi } from '../api/client'
+import { tripsApi, tagsApi, categoriesApi } from '../api/client'
 import {
   offlineDb,
   upsertTrip,
@@ -21,12 +21,16 @@ import {
   upsertBudgetItems,
   upsertReservations,
   upsertTripFiles,
+  upsertAccommodations,
+  upsertTripMembers,
+  upsertTags,
+  upsertCategories,
   upsertSyncMeta,
   clearTripData,
 } from '../db/offlineDb'
 import { prefetchTilesForTrip } from './tilePrefetcher'
 import { useSettingsStore } from '../store/settingsStore'
-import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile } from '../types'
+import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile, Accommodation, TripMember } from '../types'
 
 // ── Types ─────────────────────────────────────────────────────────────────────
 
@@ -39,6 +43,8 @@ interface TripBundle {
   budgetItems: BudgetItem[]
   reservations: Reservation[]
   files: TripFile[]
+  accommodations: Accommodation[]
+  members: TripMember[]
 }
 
 // ── Helpers ───────────────────────────────────────────────────────────────────
@@ -77,6 +83,8 @@ async function syncTrip(tripId: number): Promise<void> {
   await upsertBudgetItems(bundle.budgetItems)
   await upsertReservations(bundle.reservations)
   await upsertTripFiles(bundle.files)
+  await upsertAccommodations(bundle.accommodations || [])
+  await upsertTripMembers(tripId, bundle.members || [])
   await upsertSyncMeta({
     tripId,
     lastSyncedAt: Date.now(),
@@ -145,6 +153,10 @@ export const tripSyncManager = {
         }
       }
 
+      // Cache global user data (tags + categories) — fire-and-forget
+      tagsApi.list().then(d => upsertTags(d.tags)).catch(() => {})
+      categoriesApi.list().then(d => upsertCategories(d.categories)).catch(() => {})
+
       // Cache file blobs + map tiles in background (don't block syncAll)
       const tileUrl = useSettingsStore.getState().settings.map_tile_url || undefined
       for (const trip of toSync) {
diff --git a/server/src/routes/trips.ts b/server/src/routes/trips.ts
index 9882e1f5..9b2413ba 100644
--- a/server/src/routes/trips.ts
+++ b/server/src/routes/trips.ts
@@ -29,7 +29,7 @@ import {
   ValidationError,
   TRIP_SELECT,
 } from '../services/tripService';
-import { listDays } from '../services/dayService';
+import { listDays, listAccommodations } from '../services/dayService';
 import { listPlaces } from '../services/placeService';
 import { listItems as listPackingItems } from '../services/packingService';
 import { listItems as listTodoItems } from '../services/todoService';
@@ -318,6 +318,9 @@ router.get('/:id/bundle', authenticate, (req: Request, res: Response) => {
   const budgetItems = listBudgetItems(tripId);
   const reservations = listReservations(tripId);
   const files = listFiles(tripId, false);
+  const accommodations = listAccommodations(tripId);
+  const { owner, members } = listMembers(tripId, trip.user_id);
+  const allMembers = [owner, ...(members || [])].filter(Boolean);
 
   res.json({
     trip,
@@ -328,6 +331,8 @@ router.get('/:id/bundle', authenticate, (req: Request, res: Response) => {
     budgetItems,
     reservations,
     files,
+    accommodations,
+    members: allMembers,
   });
 });