diff --git a/assets/app.js b/assets/app.js
index e206373..094c377 100644
--- a/assets/app.js
+++ b/assets/app.js
@@ -119,6 +119,49 @@ app.use(PrimeVue, {
             darkModeSelector: '.app-dark',
             cssLayer: false
         }
+    },
+    locale: {
+        startsWith: 'Beginnt mit',
+        contains: 'Enthält',
+        notContains: 'Enthält nicht',
+        endsWith: 'Endet mit',
+        equals: 'Gleich',
+        notEquals: 'Nicht gleich',
+        noFilter: 'Kein Filter',
+        lt: 'Kleiner als',
+        lte: 'Kleiner oder gleich',
+        gt: 'Größer als',
+        gte: 'Größer oder gleich',
+        dateIs: 'Datum ist',
+        dateIsNot: 'Datum ist nicht',
+        dateBefore: 'Datum vor',
+        dateAfter: 'Datum nach',
+        clear: 'Löschen',
+        apply: 'Anwenden',
+        matchAll: 'Alle erfüllen',
+        matchAny: 'Mindestens eine',
+        addRule: 'Regel hinzufügen',
+        removeRule: 'Regel entfernen',
+        accept: 'Ja',
+        reject: 'Nein',
+        choose: 'Auswählen',
+        upload: 'Hochladen',
+        cancel: 'Abbrechen',
+        dayNames: ['Sonntag', 'Montag', 'Dienstag', 'Mittwoch', 'Donnerstag', 'Freitag', 'Samstag'],
+        dayNamesShort: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa'],
+        dayNamesMin: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa'],
+        monthNames: ['Januar', 'Februar', 'März', 'April', 'Mai', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'Dezember'],
+        monthNamesShort: ['Jan', 'Feb', 'Mär', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dez'],
+        today: 'Heute',
+        weekHeader: 'KW',
+        firstDayOfWeek: 1,
+        dateFormat: 'dd.mm.yy',
+        weak: 'Schwach',
+        medium: 'Mittel',
+        strong: 'Stark',
+        passwordPrompt: 'Passwort eingeben',
+        emptyFilterMessage: 'Keine Ergebnisse gefunden',
+        emptyMessage: 'Keine Optionen verfügbar'
     }
 });
 app.use(ToastService);
diff --git a/assets/js/layout/AppFooter.vue b/assets/js/layout/AppFooter.vue
index 487141c..450d1a0 100644
--- a/assets/js/layout/AppFooter.vue
+++ b/assets/js/layout/AppFooter.vue
@@ -2,7 +2,6 @@
 
 <template>
     <div class="layout-footer">
-        SAKAI by
-        <a href="https://primevue.org" target="_blank" rel="noopener noreferrer" class="text-primary font-bold hover:underline">PrimeVue</a>
+        <a href="https://www.osdata.org" target="_blank" rel="noopener noreferrer" class="text-primary font-bold hover:underline">2025 © osdata.org</a>
     </div>
 </template>
diff --git a/assets/js/views/ContactManagement.vue b/assets/js/views/ContactManagement.vue
index 5c0ee6e..9c5b4d1 100644
--- a/assets/js/views/ContactManagement.vue
+++ b/assets/js/views/ContactManagement.vue
@@ -1,57 +1,63 @@
 <template>
   <div class="contact-management">
-    <div class="flex justify-content-between align-items-center mb-4">
-      <h1 class="text-3xl font-bold">Kontakte</h1>
-      <Button label="Neuer Kontakt" icon="pi pi-plus" @click="openNewContactDialog" />
-    </div>
+    <div class="card">
+      <div class="flex justify-between items-center mb-4">
+        <div class="font-semibold text-xl">Kontakte</div>
+        <Button label="Neuer Kontakt" icon="pi pi-plus" @click="openNewContactDialog" />
+      </div>
 
-    <Card>
-      <template #content>
-        <DataTable
-          v-model:filters="globalFilter"
-          :value="contacts"
-          :loading="loading"
-          paginator
-          :rows="10"
-          :rowsPerPageOptions="[10, 25, 50]"
-          :globalFilterFields="['companyName', 'city', 'email']"
-          sortField="companyName"
-          :sortOrder="1"
-        >
-          <template #header>
-            <div class="flex justify-content-between">
-              <IconField iconPosition="left">
-                <InputIcon>
-                  <i class="pi pi-search" />
-                </InputIcon>
-                <InputText
-                  v-model="globalFilter"
-                  placeholder="Suchen..."
-                  style="width: 300px"
-                />
-              </IconField>
-              <div class="flex gap-2">
-                <Button
-                  label="Alle"
-                  :outlined="typeFilter !== 'all'"
-                  @click="filterByType('all')"
-                  size="small"
-                />
-                <Button
-                  label="Debitoren"
-                  :outlined="typeFilter !== 'debtor'"
-                  @click="filterByType('debtor')"
-                  size="small"
-                />
-                <Button
-                  label="Kreditoren"
-                  :outlined="typeFilter !== 'creditor'"
-                  @click="filterByType('creditor')"
-                  size="small"
-                />
-              </div>
+      <DataTable
+        v-model:filters="filters"
+        :value="contacts"
+        :loading="loading"
+        :paginator="true"
+        :rows="10"
+        :rowsPerPageOptions="[10, 25, 50, 100]"
+        :rowHover="true"
+        :globalFilterFields="['companyName', 'city', 'email', 'phone']"
+        sortField="companyName"
+        :sortOrder="1"
+        dataKey="id"
+        filterDisplay="menu"
+        showGridlines
+        paginatorTemplate="FirstPageLink PrevPageLink PageLinks NextPageLink LastPageLink CurrentPageReport RowsPerPageDropdown"
+        currentPageReportTemplate="Zeige {first} bis {last} von {totalRecords} Einträgen"
+      >
+        <template #header>
+          <div class="flex justify-between flex-wrap gap-2">
+            <div class="flex gap-2">
+              <Button
+                label="Alle"
+                :outlined="typeFilter !== 'all'"
+                @click="filterByType('all')"
+                size="small"
+              />
+              <Button
+                label="Debitoren"
+                :outlined="typeFilter !== 'debtor'"
+                @click="filterByType('debtor')"
+                size="small"
+              />
+              <Button
+                label="Kreditoren"
+                :outlined="typeFilter !== 'creditor'"
+                @click="filterByType('creditor')"
+                size="small"
+              />
             </div>
-          </template>
+            <IconField>
+              <InputIcon>
+                <i class="pi pi-search" />
+              </InputIcon>
+              <InputText
+                v-model="filters['global'].value"
+                placeholder="Suchen..."
+              />
+            </IconField>
+          </div>
+        </template>
+        <template #empty>Keine Kontakte gefunden.</template>
+        <template #loading>Lade Kontakte. Bitte warten...</template>
 
           <Column field="companyName" header="Firma" sortable style="min-width: 200px">
             <template #body="{ data }">
@@ -60,6 +66,9 @@
                 Nr: {{ data.companyNumber }}
               </div>
             </template>
+            <template #filter="{ filterModel }">
+              <InputText v-model="filterModel.value" type="text" placeholder="Suche nach Firma" />
+            </template>
           </Column>
 
           <Column field="city" header="Ort" sortable style="min-width: 150px">
@@ -71,6 +80,9 @@
                 {{ data.country }}
               </div>
             </template>
+            <template #filter="{ filterModel }">
+              <InputText v-model="filterModel.value" type="text" placeholder="Suche nach Ort" />
+            </template>
           </Column>
 
           <Column header="Ansprechpartner" style="min-width: 200px">
@@ -103,13 +115,27 @@
             </template>
           </Column>
 
-          <Column header="Status" style="min-width: 100px">
+          <Column field="isActive" header="Status" dataType="boolean" style="min-width: 100px">
             <template #body="{ data }">
               <Tag
                 :value="data.isActive ? 'Aktiv' : 'Inaktiv'"
                 :severity="data.isActive ? 'success' : 'danger'"
               />
             </template>
+            <template #filter="{ filterModel }">
+              <Select 
+                v-model="filterModel.value" 
+                :options="statusOptions" 
+                optionLabel="label"
+                optionValue="value"
+                placeholder="Status wählen" 
+                showClear
+              >
+                <template #option="slotProps">
+                  <Tag :value="slotProps.option.label" :severity="slotProps.option.value ? 'success' : 'danger'" />
+                </template>
+              </Select>
+            </template>
           </Column>
 
           <Column header="Kontakt" style="min-width: 200px">
@@ -151,19 +177,16 @@
             </template>
           </Column>
 
-          <template #empty>Keine Kontakte gefunden.</template>
         </DataTable>
-      </template>
-    </Card>
+      </div>
 
     <!-- Contact Dialog -->
     <Dialog
       v-model:visible="contactDialog"
       :header="editingContact?.id ? 'Kontakt bearbeiten' : 'Neuer Kontakt'"
       :modal="true"
-      :style="{ width: '1000px' }"
+      :style="{ width: '1200px', maxHeight: '90vh' }"
       :closable="true"
-      class="contact-dialog"
     >
       <div v-if="editingContact">
         <!-- Basisdaten -->
@@ -519,6 +542,7 @@
 <script setup>
 import { ref, onMounted } from 'vue'
 import { useToast } from 'primevue/usetoast'
+import { FilterMatchMode, FilterOperator } from '@primevue/core/api'
 import DataTable from 'primevue/datatable'
 import Column from 'primevue/column'
 import Button from 'primevue/button'
@@ -532,6 +556,7 @@ import Dropdown from 'primevue/dropdown'
 import Divider from 'primevue/divider'
 import IconField from 'primevue/iconfield'
 import InputIcon from 'primevue/inputicon'
+import Select from 'primevue/select'
 
 const toast = useToast()
 
@@ -544,9 +569,19 @@ const submitted = ref(false)
 const saving = ref(false)
 const deleting = ref(false)
 const typeFilter = ref('all')
-const globalFilter = ref('')
+const filters = ref({
+  global: { value: null, matchMode: FilterMatchMode.CONTAINS },
+  companyName: { operator: FilterOperator.AND, constraints: [{ value: null, matchMode: FilterMatchMode.STARTS_WITH }] },
+  city: { operator: FilterOperator.AND, constraints: [{ value: null, matchMode: FilterMatchMode.STARTS_WITH }] },
+  isActive: { value: null, matchMode: FilterMatchMode.EQUALS }
+})
 
 const salutations = ref(['Herr', 'Frau', 'Divers'])
+const statusOptions = ref([
+  { label: 'Aktiv', value: true },
+  { label: 'Inaktiv', value: false }
+])
+const typeOptions = ref(['Debitor', 'Kreditor'])
 
 const emptyContact = () => ({
   companyName: '',
@@ -588,19 +623,20 @@ onMounted(() => {
 const loadContacts = async () => {
   loading.value = true
   try {
-    // API-Filter Parameter aufbauen
+    // Alle Kontakte laden - API Platform unterstützt itemsPerPage Parameter
     let url = '/api/contacts'
     const params = new URLSearchParams()
     
+    // Große Anzahl setzen, um alle Kontakte zu erhalten
+    params.append('itemsPerPage', '5000')
+    
     if (typeFilter.value === 'debtor') {
       params.append('isDebtor', 'true')
     } else if (typeFilter.value === 'creditor') {
       params.append('isCreditor', 'true')
     }
     
-    if (params.toString()) {
-      url += '?' + params.toString()
-    }
+    url += '?' + params.toString()
     
     const response = await fetch(url, {
       credentials: 'include'
@@ -608,8 +644,8 @@ const loadContacts = async () => {
     if (!response.ok) throw new Error('Fehler beim Laden der Kontakte')
     const data = await response.json()
     
-    // API Platform gibt member zurück
-    contacts.value = data.member || []
+    // API Platform gibt hydra:member zurück
+    contacts.value = data['hydra:member'] || data.member || []
     
     console.log('Loaded contacts:', contacts.value.length, 'with filter:', typeFilter.value)
   } catch (error) {
diff --git a/assets/js/views/ContactManagement.vue.backup b/assets/js/views/ContactManagement.vue.backup
new file mode 100644
index 0000000..de13696
--- /dev/null
+++ b/assets/js/views/ContactManagement.vue.backup
@@ -0,0 +1,821 @@
+<template>
+  <div class="contact-management">
+    <div class="card">
+      <div class="flex justify-between items-center mb-4">
+        <div class="font-semibold text-xl">Kontakte</div>
+        <Button label="Neuer Kontakt" icon="pi pi-plus" @click="openNewContactDialog" />
+      </div>
+
+      <DataTable
+        v-model:filters="filters"
+        :value="contacts"
+        :loading="loading"
+        :paginator="true"
+        :rows="10"
+        :rowsPerPageOptions="[10, 25, 50, 100]"
+        :rowHover="true"
+        :globalFilterFields="['companyName', 'city', 'email', 'phone']"
+        sortField="companyName"
+        :sortOrder="1"
+        dataKey="id"
+        filterDisplay="menu"
+        showGridlines
+        paginatorTemplate="FirstPageLink PrevPageLink PageLinks NextPageLink LastPageLink CurrentPageReport RowsPerPageDropdown"
+        currentPageReportTemplate="Zeige {first} bis {last} von {totalRecords} Einträgen"
+      >
+        <template #header>
+          <div class="flex justify-between flex-wrap gap-2">
+            <div class="flex gap-2">
+              <Button
+                label="Alle"
+                :outlined="typeFilter !== 'all'"
+                @click="filterByType('all')"
+                size="small"
+              />
+              <Button
+                label="Debitoren"
+                :outlined="typeFilter !== 'debtor'"
+                @click="filterByType('debtor')"
+                size="small"
+              />
+              <Button
+                label="Kreditoren"
+                :outlined="typeFilter !== 'creditor'"
+                @click="filterByType('creditor')"
+                size="small"
+              />
+            </div>
+            <IconField>
+              <InputIcon>
+                <i class="pi pi-search" />
+              </InputIcon>
+              <InputText
+                v-model="filters['global'].value"
+                placeholder="Suchen..."
+              />
+            </IconField>
+          </div>
+        </template>
+        <template #empty>Keine Kontakte gefunden.</template>
+        <template #loading>Lade Kontakte. Bitte warten...</template>
+
+          <Column field="companyName" header="Firma" sortable style="min-width: 200px">
+            <template #body="{ data }">
+              <div class="font-semibold">{{ data.companyName }}</div>
+              <div class="text-sm text-500" v-if="data.companyNumber">
+                Nr: {{ data.companyNumber }}
+              </div>
+            </template>
+            <template #filter="{ filterModel }">
+              <InputText v-model="filterModel.value" type="text" placeholder="Suche nach Firma" />
+            </template>
+          </Column>
+
+          <Column field="city" header="Ort" sortable style="min-width: 150px">
+            <template #body="{ data }">
+              <div v-if="data.zipCode || data.city">
+                {{ data.zipCode }} {{ data.city }}
+              </div>
+              <div class="text-sm text-500" v-if="data.country">
+                {{ data.country }}
+              </div>
+            </template>
+            <template #filter="{ filterModel }">
+              <InputText v-model="filterModel.value" type="text" placeholder="Suche nach Ort" />
+            </template>
+          </Column>
+
+          <Column header="Ansprechpartner" style="min-width: 200px">
+            <template #body="{ data }">
+              <div v-if="data.contactPersons && data.contactPersons.length > 0">
+                <div
+                  v-for="person in data.contactPersons.slice(0, 2)"
+                  :key="person.id"
+                  class="mb-1"
+                >
+                  <div class="font-medium">
+                    {{ person.firstName }} {{ person.lastName }}
+                    <Tag v-if="person.isPrimary" value="Primär" severity="info" class="ml-1" />
+                  </div>
+                  <div class="text-sm text-500" v-if="person.email">
+                    {{ person.email }}
+                  </div>
+                </div>
+              </div>
+              <span v-else class="text-500">Keine Ansprechpartner</span>
+            </template>
+          </Column>
+
+          <Column header="Typ" style="min-width: 130px">
+            <template #body="{ data }">
+              <div class="flex gap-1">
+                <Tag v-if="data.isDebtor" value="Debitor" severity="success" />
+                <Tag v-if="data.isCreditor" value="Kreditor" severity="warning" />
+              </div>
+            </template>
+          </Column>
+
+          <Column field="isActive" header="Status" dataType="boolean" style="min-width: 100px">
+            <template #body="{ data }">
+              <Tag
+                :value="data.isActive ? 'Aktiv' : 'Inaktiv'"
+                :severity="data.isActive ? 'success' : 'danger'"
+              />
+            </template>
+            <template #filter="{ filterModel }">
+              <Select 
+                v-model="filterModel.value" 
+                :options="statusOptions" 
+                optionLabel="label"
+                optionValue="value"
+                placeholder="Status wählen" 
+                showClear
+              >
+                <template #option="slotProps">
+                  <Tag :value="slotProps.option.label" :severity="slotProps.option.value ? 'success' : 'danger'" />
+                </template>
+              </Select>
+            </template>
+          </Column>
+
+          <Column header="Kontakt" style="min-width: 200px">
+            <template #body="{ data }">
+              <div class="flex flex-column gap-1">
+                <div v-if="data.phone" class="text-sm">
+                  <i class="pi pi-phone mr-1"></i> {{ data.phone }}
+                </div>
+                <div v-if="data.email" class="text-sm">
+                  <i class="pi pi-envelope mr-1"></i> {{ data.email }}
+                </div>
+                <div v-if="data.website" class="text-sm">
+                  <i class="pi pi-globe mr-1"></i>
+                  <a :href="data.website" target="_blank">{{ data.website }}</a>
+                </div>
+              </div>
+            </template>
+          </Column>
+
+          <Column :exportable="false" style="min-width: 120px">
+            <template #body="{ data }">
+              <div class="flex gap-2">
+                <Button
+                  icon="pi pi-pencil"
+                  outlined
+                  rounded
+                  @click="editContact(data)"
+                  size="small"
+                />
+                <Button
+                  icon="pi pi-trash"
+                  outlined
+                  rounded
+                  severity="danger"
+                  @click="confirmDelete(data)"
+                  size="small"
+                />
+              </div>
+            </template>
+          </Column>
+
+        </DataTable>
+      </div>
+
+    <!-- Contact Dialog -->
+    <Dialog
+      v-model:visible="contactDialog"
+      :header="editingContact?.id ? 'Kontakt bearbeiten' : 'Neuer Kontakt'"
+      :modal="true"
+      :style="{ width: '1200px' }"
+      :closable="true"
+    >
+      <div v-if="editingContact" class="flex flex-col gap-6">
+        
+        <!-- Basisdaten -->
+        <div class="flex flex-col gap-4">
+          <div class="font-semibold text-xl flex items-center gap-2">
+            <i class="pi pi-building text-primary"></i>
+            <span>Basisdaten</span>
+          </div>
+          
+          <div class="flex flex-col md:flex-row gap-4">
+            <div class="flex flex-col gap-2 w-full md:w-2/3">
+              <label for="companyName">Firmenname <span class="text-red-500">*</span></label>
+              <InputText
+                id="companyName"
+                v-model="editingContact.companyName"
+                :invalid="submitted && !editingContact.companyName"
+              />
+              <small v-if="submitted && !editingContact.companyName" class="text-red-500">
+                Firmenname ist erforderlich
+              </small>
+            </div>
+            <div class="flex flex-col gap-2 w-full md:w-1/3">
+              <label for="companyNumber">Kundennummer</label>
+              <InputText id="companyNumber" v-model="editingContact.companyNumber" />
+            </div>
+          </div>
+
+          <div class="flex gap-4">
+            <div class="flex items-center gap-2">
+              <Checkbox inputId="isDebtor" v-model="editingContact.isDebtor" :binary="true" />
+              <label for="isDebtor">Debitor</label>
+            </div>
+            <div class="flex items-center gap-2">
+              <Checkbox inputId="isCreditor" v-model="editingContact.isCreditor" :binary="true" />
+              <label for="isCreditor">Kreditor</label>
+            </div>
+            <div class="flex items-center gap-2">
+              <Checkbox inputId="isActive" v-model="editingContact.isActive" :binary="true" />
+              <label for="isActive">Aktiv</label>
+            </div>
+          </div>
+        </div>
+
+        <Divider />
+
+        <!-- Adresse -->
+        <div class="flex flex-col gap-4">
+          <div class="font-semibold text-xl flex items-center gap-2">
+            <i class="pi pi-map-marker text-primary"></i>
+            <span>Adresse</span>
+          </div>
+          
+          <div class="flex flex-col gap-2">
+            <label for="street">Straße</label>
+            <InputText id="street" v-model="editingContact.street" />
+          </div>
+
+          <div class="flex flex-col md:flex-row gap-4">
+            <div class="flex flex-col gap-2 w-full md:w-1/3">
+              <label for="zipCode">PLZ</label>
+              <InputText id="zipCode" v-model="editingContact.zipCode" />
+            </div>
+            <div class="flex flex-col gap-2 w-full md:w-1/3">
+              <label for="city">Ort</label>
+              <InputText id="city" v-model="editingContact.city" />
+            </div>
+            <div class="flex flex-col gap-2 w-full md:w-1/3">
+              <label for="country">Land</label>
+              <InputText id="country" v-model="editingContact.country" />
+            </div>
+          </div>
+        </div>
+
+        <Divider />
+
+        <!-- Kontaktdaten -->
+        <div class="flex flex-col gap-4">
+          <div class="font-semibold text-xl flex items-center gap-2">
+            <i class="pi pi-phone text-primary"></i>
+            <span>Kontaktdaten</span>
+          </div>
+          
+          <div class="flex flex-col md:flex-row gap-4">
+            <div class="flex flex-col gap-2 w-full">
+              <label for="phone">Telefon</label>
+              <InputText id="phone" v-model="editingContact.phone" />
+            </div>
+            <div class="flex flex-col gap-2 w-full">
+              <label for="fax">Fax</label>
+              <InputText id="fax" v-model="editingContact.fax" />
+            </div>
+          </div>
+
+          <div class="flex flex-col md:flex-row gap-4">
+            <div class="flex flex-col gap-2 w-full">
+              <label for="email">E-Mail</label>
+              <InputText id="email" v-model="editingContact.email" type="email" />
+            </div>
+            <div class="flex flex-col gap-2 w-full">
+              <label for="website">Webseite</label>
+              <InputText id="website" v-model="editingContact.website" />
+            </div>
+          </div>
+        </div>
+
+        <Divider />
+
+        <!-- Steuerdaten -->
+        <div class="flex flex-col gap-4">
+          <div class="font-semibold text-xl flex items-center gap-2">
+            <i class="pi pi-calculator text-primary"></i>
+            <span>Steuerdaten</span>
+          </div>
+          
+          <div class="flex flex-col md:flex-row gap-4">
+            <div class="flex flex-col gap-2 w-full">
+              <label for="taxNumber">Steuernummer</label>
+              <InputText id="taxNumber" v-model="editingContact.taxNumber" />
+            </div>
+            <div class="flex flex-col gap-2 w-full">
+              <label for="vatNumber">USt-IdNr.</label>
+              <InputText id="vatNumber" v-model="editingContact.vatNumber" />
+            </div>
+          </div>
+        </div>
+
+        <Divider />
+
+        <!-- Ansprechpartner -->
+        <div class="flex flex-col gap-4">
+          <div class="flex items-center justify-between">
+            <div class="font-semibold text-xl flex items-center gap-2">
+              <i class="pi pi-users text-primary"></i>
+              <span>Ansprechpartner</span>
+            </div>
+            <Button
+              label="Hinzufügen"
+              icon="pi pi-plus"
+              size="small"
+              outlined
+              @click="addContactPerson"
+              :disabled="editingContact.contactPersons.length >= 2"
+            />
+          </div>
+
+          <div v-if="editingContact.contactPersons.length === 0" class="text-center py-4 text-500">
+            <i class="pi pi-user-plus text-4xl mb-3"></i>
+            <p>Noch keine Ansprechpartner hinzugefügt</p>
+          </div>
+
+          <div
+            v-for="(person, index) in editingContact.contactPersons"
+            :key="index"
+            class="flex flex-col gap-4 p-4 border border-surface rounded-lg"
+          >
+            <div class="flex justify-between items-center">
+              <h4 class="m-0 font-semibold flex items-center gap-2">
+                <i class="pi pi-user"></i>
+                Ansprechpartner {{ index + 1 }}
+                <Tag v-if="person.isPrimary" value="Primär" severity="info" />
+              </h4>
+              <Button
+                icon="pi pi-trash"
+                text
+                rounded
+                severity="danger"
+                @click="removeContactPerson(index)"
+              />
+            </div>
+
+            <div class="flex flex-col md:flex-row gap-4">
+              <div class="flex flex-col gap-2 w-full md:w-1/3">
+                <label :for="'salutation' + index">Anrede</label>
+                <Dropdown
+                  :id="'salutation' + index"
+                  v-model="person.salutation"
+                  :options="salutations"
+                  placeholder="Auswählen"
+                />
+              </div>
+              <div class="flex flex-col gap-2 w-full md:w-1/3">
+                <label :for="'title' + index">Titel</label>
+                <InputText :id="'title' + index" v-model="person.title" />
+              </div>
+              <div class="flex flex-col gap-2 w-full md:w-1/3">
+                <div class="flex items-center gap-2">
+                  <Checkbox :inputId="'isPrimary' + index" v-model="person.isPrimary" :binary="true" />
+                  <label :for="'isPrimary' + index">Primärer Kontakt</label>
+                </div>
+              </div>
+            </div>
+
+            <div class="flex flex-col md:flex-row gap-4">
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'firstName' + index">Vorname <span class="text-red-500">*</span></label>
+                <InputText
+                  :id="'firstName' + index"
+                  v-model="person.firstName"
+                  :invalid="submitted && !person.firstName"
+                />
+              </div>
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'lastName' + index">Nachname <span class="text-red-500">*</span></label>
+                <InputText
+                  :id="'lastName' + index"
+                  v-model="person.lastName"
+                  :invalid="submitted && !person.lastName"
+                />
+              </div>
+            </div>
+
+            <div class="flex flex-col md:flex-row gap-4">
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'position' + index">Position</label>
+                <InputText :id="'position' + index" v-model="person.position" />
+              </div>
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'department' + index">Abteilung</label>
+                <InputText :id="'department' + index" v-model="person.department" />
+              </div>
+            </div>
+
+            <div class="flex flex-col md:flex-row gap-4">
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'personPhone' + index">Telefon</label>
+                <InputText :id="'personPhone' + index" v-model="person.phone" />
+              </div>
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'mobile' + index">Mobil</label>
+                <InputText :id="'mobile' + index" v-model="person.mobile" />
+              </div>
+              <div class="flex flex-col gap-2 w-full">
+                <label :for="'personEmail' + index">E-Mail</label>
+                <InputText :id="'personEmail' + index" v-model="person.email" type="email" />
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <Divider />
+
+        <!-- Notizen -->
+        <div class="flex flex-col gap-4">
+          <div class="font-semibold text-xl flex items-center gap-2">
+            <i class="pi pi-file-edit text-primary"></i>
+            <span>Notizen</span>
+          </div>
+          
+          <div class="flex flex-col gap-2">
+            <label for="notes">Interne Notizen</label>
+            <Textarea id="notes" v-model="editingContact.notes" rows="4" />
+          </div>
+        </div>
+      </div>
+                    rounded
+                    severity="danger"
+                    @click="removeContactPerson(index)"
+                    size="small"
+                  />
+                </div>
+
+                <div class="field col-12 md:col-3">
+                  <label :for="'salutation-' + index" class="block mb-2 font-medium">
+                    Anrede
+                  </label>
+                  <Dropdown
+                    :id="'salutation-' + index"
+                    v-model="person.salutation"
+                    :options="salutations"
+                    placeholder="Wählen..."
+                    class="w-full"
+                  />
+                </div>
+
+                <div class="field col-12 md:col-3">
+                  <label :for="'title-' + index" class="block mb-2 font-medium">Titel</label>
+                  <InputText :id="'title-' + index" v-model="person.title" class="w-full" />
+                </div>
+
+                <div class="field col-12 md:col-3">
+                  <label :for="'firstName-' + index" class="block mb-2 font-medium">
+                    Vorname <span class="text-red-500">*</span>
+                  </label>
+                  <InputText
+                    :id="'firstName-' + index"
+                    v-model="person.firstName"
+                    class="w-full"
+                    :class="{ 'p-invalid': submitted && !person.firstName }"
+                  />
+                </div>
+
+                <div class="field col-12 md:col-3">
+                  <label :for="'lastName-' + index" class="block mb-2 font-medium">
+                    Nachname <span class="text-red-500">*</span>
+                  </label>
+                  <InputText
+                    :id="'lastName-' + index"
+                    v-model="person.lastName"
+                    class="w-full"
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <Divider />
+
+        <!-- Notizen -->
+        <div class="flex flex-col gap-4">
+          <div class="font-semibold text-xl flex items-center gap-2">
+            <i class="pi pi-file-edit text-primary"></i>
+            <span>Notizen</span>
+          </div>
+          
+          <div class="flex flex-col gap-2">
+            <label for="notes">Interne Notizen</label>
+            <Textarea id="notes" v-model="editingContact.notes" rows="4" />
+          </div>
+        </div>
+      </div>
+
+      <template #footer>
+        <Button label="Abbrechen" outlined @click="hideDialog" />
+        <Button label="Speichern" @click="saveContact" :loading="saving" />
+      </template>
+    </Dialog>
+
+    <!-- Delete Confirmation -->
+    <Dialog
+      v-model:visible="deleteDialog"
+      header="Bestätigung"
+      :modal="true"
+      :style="{ width: '450px' }"
+    >
+      <div class="flex align-items-center">
+        <i class="pi pi-exclamation-triangle mr-3" style="font-size: 2rem; color: var(--red-500)"></i>
+        <span v-if="editingContact">
+          Möchten Sie den Kontakt <b>{{ editingContact.companyName }}</b> wirklich löschen?
+        </span>
+      </div>
+      <template #footer>
+        <Button label="Nein" outlined @click="deleteDialog = false" />
+        <Button label="Ja" severity="danger" @click="deleteContact" :loading="deleting" />
+      </template>
+    </Dialog>
+  </div>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue'
+import { useToast } from 'primevue/usetoast'
+import { FilterMatchMode, FilterOperator } from '@primevue/core/api'
+import DataTable from 'primevue/datatable'
+import Column from 'primevue/column'
+import Button from 'primevue/button'
+import InputText from 'primevue/inputtext'
+import Textarea from 'primevue/textarea'
+import Dialog from 'primevue/dialog'
+import Card from 'primevue/card'
+import Tag from 'primevue/tag'
+import Checkbox from 'primevue/checkbox'
+import Dropdown from 'primevue/dropdown'
+import Divider from 'primevue/divider'
+import IconField from 'primevue/iconfield'
+import InputIcon from 'primevue/inputicon'
+import Select from 'primevue/select'
+
+const toast = useToast()
+
+const contacts = ref([])
+const loading = ref(false)
+const contactDialog = ref(false)
+const deleteDialog = ref(false)
+const editingContact = ref(null)
+const submitted = ref(false)
+const saving = ref(false)
+const deleting = ref(false)
+const typeFilter = ref('all')
+const filters = ref({
+  global: { value: null, matchMode: FilterMatchMode.CONTAINS },
+  companyName: { operator: FilterOperator.AND, constraints: [{ value: null, matchMode: FilterMatchMode.STARTS_WITH }] },
+  city: { operator: FilterOperator.AND, constraints: [{ value: null, matchMode: FilterMatchMode.STARTS_WITH }] },
+  isActive: { value: null, matchMode: FilterMatchMode.EQUALS }
+})
+
+const salutations = ref(['Herr', 'Frau', 'Divers'])
+const statusOptions = ref([
+  { label: 'Aktiv', value: true },
+  { label: 'Inaktiv', value: false }
+])
+const typeOptions = ref(['Debitor', 'Kreditor'])
+
+const emptyContact = () => ({
+  companyName: '',
+  companyNumber: '',
+  street: '',
+  zipCode: '',
+  city: '',
+  country: 'Deutschland',
+  phone: '',
+  fax: '',
+  email: '',
+  website: '',
+  taxNumber: '',
+  vatNumber: '',
+  isDebtor: false,
+  isCreditor: false,
+  isActive: true,
+  notes: '',
+  contactPersons: []
+})
+
+const emptyContactPerson = () => ({
+  salutation: null,
+  title: '',
+  firstName: '',
+  lastName: '',
+  position: '',
+  department: '',
+  phone: '',
+  mobile: '',
+  email: '',
+  isPrimary: false
+})
+
+onMounted(() => {
+  loadContacts()
+})
+
+const loadContacts = async () => {
+  loading.value = true
+  try {
+    // Alle Kontakte laden - API Platform unterstützt itemsPerPage Parameter
+    let url = '/api/contacts'
+    const params = new URLSearchParams()
+    
+    // Große Anzahl setzen, um alle Kontakte zu erhalten
+    params.append('itemsPerPage', '5000')
+    
+    if (typeFilter.value === 'debtor') {
+      params.append('isDebtor', 'true')
+    } else if (typeFilter.value === 'creditor') {
+      params.append('isCreditor', 'true')
+    }
+    
+    url += '?' + params.toString()
+    
+    const response = await fetch(url, {
+      credentials: 'include'
+    })
+    if (!response.ok) throw new Error('Fehler beim Laden der Kontakte')
+    const data = await response.json()
+    
+    // API Platform gibt hydra:member zurück
+    contacts.value = data['hydra:member'] || data.member || []
+    
+    console.log('Loaded contacts:', contacts.value.length, 'with filter:', typeFilter.value)
+  } catch (error) {
+    console.error('Error loading contacts:', error)
+    toast.add({
+      severity: 'error',
+      summary: 'Fehler',
+      detail: 'Kontakte konnten nicht geladen werden',
+      life: 3000
+    })
+  } finally {
+    loading.value = false
+  }
+}
+
+const filterByType = (type) => {
+  typeFilter.value = type
+  loadContacts()
+}
+
+const openNewContactDialog = () => {
+  editingContact.value = emptyContact()
+  submitted.value = false
+  contactDialog.value = true
+}
+
+const editContact = (contact) => {
+  editingContact.value = { ...contact }
+  // Ensure contactPersons is initialized
+  if (!editingContact.value.contactPersons) {
+    editingContact.value.contactPersons = []
+  }
+  submitted.value = false
+  contactDialog.value = true
+}
+
+const hideDialog = () => {
+  contactDialog.value = false
+  submitted.value = false
+  editingContact.value = null
+}
+
+const addContactPerson = () => {
+  if (editingContact.value.contactPersons.length < 2) {
+    editingContact.value.contactPersons.push(emptyContactPerson())
+  }
+}
+
+const removeContactPerson = (index) => {
+  editingContact.value.contactPersons.splice(index, 1)
+}
+
+const validateContact = () => {
+  if (!editingContact.value.companyName) {
+    return false
+  }
+  
+  // Validate contact persons
+  for (const person of editingContact.value.contactPersons) {
+    if (!person.firstName || !person.lastName) {
+      return false
+    }
+  }
+  
+  return true
+}
+
+const saveContact = async () => {
+  submitted.value = true
+  
+  if (!validateContact()) {
+    toast.add({
+      severity: 'warn',
+      summary: 'Validierung fehlgeschlagen',
+      detail: 'Bitte füllen Sie alle Pflichtfelder aus',
+      life: 3000
+    })
+    return
+  }
+
+  saving.value = true
+  try {
+    const url = editingContact.value.id
+      ? `/api/contacts/${editingContact.value.id}`
+      : '/api/contacts'
+    
+    const method = editingContact.value.id ? 'PUT' : 'POST'
+    
+    const response = await fetch(url, {
+      method,
+      headers: {
+        'Content-Type': 'application/json'
+      },
+      credentials: 'include',
+      body: JSON.stringify(editingContact.value)
+    })
+
+    if (!response.ok) {
+      const error = await response.json()
+      throw new Error(error.message || 'Fehler beim Speichern')
+    }
+
+    toast.add({
+      severity: 'success',
+      summary: 'Erfolg',
+      detail: 'Kontakt wurde gespeichert',
+      life: 3000
+    })
+
+    hideDialog()
+    loadContacts()
+  } catch (error) {
+    console.error('Error saving contact:', error)
+    toast.add({
+      severity: 'error',
+      summary: 'Fehler',
+      detail: error.message || 'Kontakt konnte nicht gespeichert werden',
+      life: 3000
+    })
+  } finally {
+    saving.value = false
+  }
+}
+
+const confirmDelete = (contact) => {
+  editingContact.value = contact
+  deleteDialog.value = true
+}
+
+const deleteContact = async () => {
+  deleting.value = true
+  try {
+    const response = await fetch(`/api/contacts/${editingContact.value.id}`, {
+      method: 'DELETE',
+      credentials: 'include'
+    })
+
+    if (!response.ok) throw new Error('Fehler beim Löschen')
+
+    toast.add({
+      severity: 'success',
+      summary: 'Erfolg',
+      detail: 'Kontakt wurde gelöscht',
+      life: 3000
+    })
+
+    deleteDialog.value = false
+    editingContact.value = null
+    loadContacts()
+  } catch (error) {
+    console.error('Error deleting contact:', error)
+    toast.add({
+      severity: 'error',
+      summary: 'Fehler',
+      detail: 'Kontakt konnte nicht gelöscht werden',
+      life: 3000
+    })
+  } finally {
+    deleting.value = false
+  }
+}
+</script>
+
+<style scoped>
+.contact-management {
+  padding: 1rem;
+}
+
+.p-invalid {
+  border-color: var(--red-500);
+}
+
+.p-error {
+  color: var(--red-500);
+  font-size: 0.875rem;
+}
+</style>
diff --git a/src/Entity/Contact.php b/src/Entity/Contact.php
index 61b44fd..ed93d47 100644
--- a/src/Entity/Contact.php
+++ b/src/Entity/Contact.php
@@ -29,6 +29,9 @@ use Symfony\Component\Validator\Constraints as Assert;
         new Put(security: "is_granted('ROLE_USER')", stateless: false),
         new Delete(security: "is_granted('ROLE_ADMIN')", stateless: false)
     ],
+    paginationClientItemsPerPage: true,
+    paginationItemsPerPage: 30,
+    paginationMaximumItemsPerPage: 5000,
     normalizationContext: ['groups' => ['contact:read']],
     denormalizationContext: ['groups' => ['contact:write']],
     order: ['companyName' => 'ASC']