diff --git a/frontend/app/components/machine/MachineDetailHeader.vue b/frontend/app/components/machine/MachineDetailHeader.vue
index 2613a96..22440e3 100644
--- a/frontend/app/components/machine/MachineDetailHeader.vue
+++ b/frontend/app/components/machine/MachineDetailHeader.vue
@@ -1,40 +1,46 @@
 <template>
-  <div class="flex flex-col gap-4 md:flex-row md:items-start md:justify-between">
-    <div class="flex flex-col gap-2">
-      <h1 class="text-3xl font-bold">
-        {{ title }}
-      </h1>
-    </div>
-    <div class="flex items-center gap-2 print:hidden" data-print-hide>
-      <button
-        @click="$emit('toggle-edit')"
-        class="btn btn-primary"
-        :class="{ 'btn-outline': isEditMode }"
-      >
-        <IconLucideSquarePen
+  <div class="space-y-3">
+    <div class="flex flex-col gap-4 md:flex-row md:items-start md:justify-between">
+      <div class="flex flex-col gap-1">
+        <div class="flex items-center gap-3 flex-wrap">
+          <h1 class="text-2xl font-bold">{{ title }}</h1>
+          <div
+            v-if="siteName"
+            class="badge badge-outline font-semibold"
+            :style="siteStyle"
+          >
+            {{ siteName }}
+          </div>
+          <div v-if="reference" class="badge badge-outline">{{ reference }}</div>
+        </div>
+        <p v-if="description" class="text-sm text-base-content/60">{{ description }}</p>
+      </div>
+      <div class="flex items-center gap-2 print:hidden">
+        <button
+          v-if="canEdit"
+          type="button"
+          class="btn btn-primary btn-sm md:btn-md"
+          :class="{ 'btn-outline': isEditMode }"
+          @click="$emit('toggle-edit')"
+        >
+          <IconLucideSquarePen v-if="!isEditMode" class="w-4 h-4 mr-1" aria-hidden="true" />
+          <IconLucideEye v-else class="w-4 h-4 mr-1" aria-hidden="true" />
+          {{ isEditMode ? 'Voir d\u00e9tails' : 'Modifier' }}
+        </button>
+        <button
           v-if="!isEditMode"
-          class="w-5 h-5 mr-2"
-          aria-hidden="true"
-        />
-        <IconLucideEye
-          v-else
-          class="w-5 h-5 mr-2"
-          aria-hidden="true"
-        />
-        {{ isEditMode ? 'Voir détails' : 'Modifier' }}
-      </button>
-      <button
-        v-if="!isEditMode"
-        @click="$emit('open-print')"
-        type="button"
-        class="btn btn-outline btn-secondary"
-      >
-        <IconLucidePrinter class="w-5 h-5 mr-2" aria-hidden="true" />
-        Imprimer
-      </button>
-      <button type="button" class="btn btn-ghost btn-sm md:btn-md" @click="goBack">
-        Retour aux machines
-      </button>
+          type="button"
+          class="btn btn-ghost btn-sm md:btn-md"
+          title="Imprimer"
+          @click="$emit('open-print')"
+        >
+          <IconLucidePrinter class="w-4 h-4" aria-hidden="true" />
+        </button>
+        <NuxtLink to="/machines" class="btn btn-ghost btn-sm md:btn-md">
+          <IconLucideArrowLeft class="w-4 h-4 mr-1" aria-hidden="true" />
+          Parc machines
+        </NuxtLink>
+      </div>
     </div>
   </div>
 </template>
@@ -43,11 +49,16 @@
 import IconLucideSquarePen from '~icons/lucide/square-pen'
 import IconLucideEye from '~icons/lucide/eye'
 import IconLucidePrinter from '~icons/lucide/printer'
+import IconLucideArrowLeft from '~icons/lucide/arrow-left'
 
-const router = useRouter()
+const { canEdit } = usePermissions()
 
-defineProps<{
+const props = defineProps<{
   title: string
+  description?: string
+  siteName?: string
+  siteColor?: string
+  reference?: string
   isEditMode: boolean
 }>()
 
@@ -56,12 +67,12 @@ defineEmits<{
   'open-print': []
 }>()
 
-function goBack() {
-  if (window.history.length > 1) {
-    router.back()
+const siteStyle = computed(() => {
+  if (!props.siteColor) return {}
+  return {
+    borderColor: props.siteColor + '60',
+    backgroundColor: props.siteColor + '25',
+    color: props.siteColor,
   }
-  else {
-    navigateTo('/machines')
-  }
-}
+})
 </script>
diff --git a/frontend/app/pages/machine/[id].vue b/frontend/app/pages/machine/[id].vue
index 306c98e..9c7b07d 100644
--- a/frontend/app/pages/machine/[id].vue
+++ b/frontend/app/pages/machine/[id].vue
@@ -17,123 +17,129 @@
 
       <!-- Header with actions -->
       <MachineDetailHeader
-        :title="machineViewTitle"
+        :title="d.machine.value.name"
+        :description="d.machine.value.description"
+        :site-name="d.machine.value.site?.name"
+        :site-color="d.machine.value.site?.color"
+        :reference="d.machine.value.reference"
         :is-edit-mode="d.isEditMode.value"
         @toggle-edit="d.toggleEditMode"
         @open-print="d.openPrintModal"
       />
 
-      <!-- Debug info -->
-      <div v-if="d.debug.value" class="bg-yellow-100 p-4 rounded-lg">
-        <p>Debug: Machine trouvée - {{ d.machine.value.name }}</p>
-        <p>Components count: {{ d.components.value.length }}</p>
-        <p>Pieces count: {{ d.pieces.value.length }}</p>
-      </div>
-
-      <!-- Hero -->
-      <PageHero
-        :title="d.machine.value.name"
-        :subtitle="d.machine.value.description"
-        min-height="min-h-[20vh]"
-        max-width="max-w-md"
-        rounded
-      >
-        <div class="flex justify-center gap-4">
-          <div
-            v-if="d.machine.value.site?.name"
-            class="badge badge-outline font-semibold"
-            :style="d.machine.value.site?.color ? { borderColor: d.machine.value.site.color + '60', backgroundColor: d.machine.value.site.color + '25', color: d.machine.value.site.color } : {}"
-          >
-            {{ d.machine.value.site?.name }}
+      <!-- Tabbed content -->
+      <EntityTabs v-model="activeTab" :tabs="machineTabs" aria-label="Sections machine">
+        <template #tab-general>
+          <div class="space-y-8">
+            <MachineInfoCard
+              ref="machineInfoCardRef"
+              :is-edit-mode="d.isEditMode.value"
+              :machine-name="d.machineName.value"
+              :machine-reference="d.machineReference.value"
+              :machine-site-id="d.machineSiteId.value"
+              :machine-site-name="d.machine.value?.site?.name ?? ''"
+              :sites="d.sites.value"
+              :machine-constructeur-ids="d.machineConstructeurIds.value"
+              :machine-constructeurs-display="d.machineConstructeursDisplay.value"
+              :has-machine-constructeur="d.hasMachineConstructeur.value"
+              :constructeur-links="d.constructeurLinks.value"
+              :visible-custom-fields="d.visibleMachineCustomFields.value"
+              :get-machine-field-id="d.getMachineFieldId"
+              :machine-id="machineId"
+              :machine-custom-field-defs="d.machine.value?.customFields ?? []"
+              @update:machine-name="d.machineName.value = $event"
+              @update:machine-reference="d.machineReference.value = $event"
+              @update:machine-site-id="d.machineSiteId.value = $event"
+              @update:constructeur-ids="d.handleMachineConstructeurChange"
+              @update:constructeur-links="d.constructeurLinks.value = $event"
+              @remove-constructeur-link="handleRemoveConstructeurLink"
+              @set-custom-field-value="d.setMachineCustomFieldValue"
+              @custom-fields-saved="() => { d.loadMachineData(); refreshVersions() }"
+            />
+            <MachineProductsCard
+              v-if="d.isEditMode.value || d.machineDirectProducts.value.length > 0"
+              :products="d.machineDirectProducts.value"
+              :is-edit-mode="d.isEditMode.value"
+              @add-product="openAddModal('product')"
+              @remove-product="confirmRemoveProduct"
+              @fill-entity="(linkId, typeId) => handleFillEntity(linkId, 'product', typeId)"
+            />
           </div>
-          <div v-if="d.machine.value.reference" class="badge badge-outline">
-            {{ d.machine.value.reference }}
+        </template>
+
+        <template #tab-structure>
+          <div class="space-y-8">
+            <MachineComponentsCard
+              v-if="d.isEditMode.value || d.components.value.length > 0"
+              :components="d.components.value"
+              :is-edit-mode="d.isEditMode.value"
+              :collapsed="d.componentsCollapsed.value"
+              :collapse-toggle-token="d.collapseToggleToken.value"
+              @toggle-collapse="d.toggleAllComponents"
+              @update-component="d.updateComponent"
+              @edit-piece="d.updatePieceFromComponent"
+              @custom-field-update="d.handleCustomFieldUpdate"
+              @add-component="openAddModal('component')"
+              @remove-component="confirmRemoveComponent"
+              @fill-entity="(linkId, typeId) => handleFillEntity(linkId, 'component', typeId)"
+            />
+            <MachinePiecesCard
+              v-if="d.isEditMode.value || d.machinePieces.value.length > 0"
+              :pieces="d.machinePieces.value"
+              :is-edit-mode="d.isEditMode.value"
+              :collapsed="d.piecesCollapsed.value"
+              :collapse-toggle-token="d.pieceCollapseToggleToken.value"
+              @update-piece="d.updatePieceInfo"
+              @edit-piece="d.editPiece"
+              @custom-field-update="d.handleCustomFieldUpdate"
+              @add-piece="openAddModal('piece')"
+              @remove-piece="confirmRemovePiece"
+              @fill-entity="(linkId, typeId) => handleFillEntity(linkId, 'piece', typeId)"
+              @toggle-collapse="d.toggleAllPieces"
+            />
           </div>
-        </div>
-      </PageHero>
+        </template>
 
-      <!-- Machine Info Card -->
-      <MachineInfoCard
-        ref="machineInfoCardRef"
-        :is-edit-mode="d.isEditMode.value"
-        :machine-name="d.machineName.value"
-        :machine-reference="d.machineReference.value"
-        :machine-site-id="d.machineSiteId.value"
-        :machine-site-name="d.machine.value?.site?.name ?? ''"
-        :sites="d.sites.value"
-        :machine-constructeur-ids="d.machineConstructeurIds.value"
-        :machine-constructeurs-display="d.machineConstructeursDisplay.value"
-        :has-machine-constructeur="d.hasMachineConstructeur.value"
-        :constructeur-links="d.constructeurLinks.value"
-        :visible-custom-fields="d.visibleMachineCustomFields.value"
-        :get-machine-field-id="d.getMachineFieldId"
-        :machine-id="machineId"
-        :machine-custom-field-defs="d.machine.value?.customFields ?? []"
-        @update:machine-name="d.machineName.value = $event"
-        @update:machine-reference="d.machineReference.value = $event"
-        @update:machine-site-id="d.machineSiteId.value = $event"
-        @update:constructeur-ids="d.handleMachineConstructeurChange"
-        @update:constructeur-links="d.constructeurLinks.value = $event"
-        @remove-constructeur-link="handleRemoveConstructeurLink"
-        @set-custom-field-value="d.setMachineCustomFieldValue"
-        @custom-fields-saved="() => { d.loadMachineData(); refreshVersions() }"
-      />
+        <template #tab-documents>
+          <MachineDocumentsCard
+            v-if="d.isEditMode.value || d.machineDocumentsList.value.length > 0"
+            :documents="d.machineDocumentsList.value"
+            :is-edit-mode="d.isEditMode.value"
+            :uploading="d.machineDocumentsUploading.value"
+            :files="d.machineDocumentFiles.value"
+            @update:files="d.machineDocumentFiles.value = $event"
+            @files-added="d.handleMachineFilesAdded"
+            @preview="d.openPreview"
+            @download="d.downloadDocument"
+            @remove="confirmRemoveDocument"
+          />
+        </template>
 
-      <!-- Documents -->
-      <MachineDocumentsCard
-        v-if="d.isEditMode.value || d.machineDocumentsList.value.length > 0"
-        :documents="d.machineDocumentsList.value"
-        :is-edit-mode="d.isEditMode.value"
-        :uploading="d.machineDocumentsUploading.value"
-        :files="d.machineDocumentFiles.value"
-        @update:files="d.machineDocumentFiles.value = $event"
-        @files-added="d.handleMachineFilesAdded"
-        @preview="d.openPreview"
-        @download="d.downloadDocument"
-        @remove="confirmRemoveDocument"
-      />
-
-      <!-- Produits associés -->
-      <MachineProductsCard
-        v-if="d.isEditMode.value || d.machineDirectProducts.value.length > 0"
-        :products="d.machineDirectProducts.value"
-        :is-edit-mode="d.isEditMode.value"
-        @add-product="openAddModal('product')"
-        @remove-product="confirmRemoveProduct"
-        @fill-entity="(linkId, typeId) => handleFillEntity(linkId, 'product', typeId)"
-      />
-
-      <!-- Components Section -->
-      <MachineComponentsCard
-        v-if="d.isEditMode.value || d.components.value.length > 0"
-        :components="d.components.value"
-        :is-edit-mode="d.isEditMode.value"
-        :collapsed="d.componentsCollapsed.value"
-        :collapse-toggle-token="d.collapseToggleToken.value"
-        @toggle-collapse="d.toggleAllComponents"
-        @update-component="d.updateComponent"
-        @edit-piece="d.updatePieceFromComponent"
-        @custom-field-update="d.handleCustomFieldUpdate"
-        @add-component="openAddModal('component')"
-        @remove-component="confirmRemoveComponent"
-        @fill-entity="(linkId, typeId) => handleFillEntity(linkId, 'component', typeId)"
-      />
-
-      <!-- Machine Pieces Section -->
-      <MachinePiecesCard
-        v-if="d.isEditMode.value || d.machinePieces.value.length > 0"
-        :pieces="d.machinePieces.value"
-        :is-edit-mode="d.isEditMode.value"
-        :collapsed="d.piecesCollapsed.value"
-        :collapse-toggle-token="d.pieceCollapseToggleToken.value"
-        @update-piece="d.updatePieceInfo"
-        @edit-piece="d.editPiece"
-        @custom-field-update="d.handleCustomFieldUpdate"
-        @add-piece="openAddModal('piece')"
-        @remove-piece="confirmRemovePiece"
-        @fill-entity="(linkId, typeId) => handleFillEntity(linkId, 'piece', typeId)"
-        @toggle-collapse="d.toggleAllPieces"
-      />
+        <template #tab-history>
+          <div class="space-y-8">
+            <EntityHistorySection
+              :entries="history"
+              :loading="historyLoading"
+              :error="historyError"
+              :field-labels="historyFieldLabels"
+            />
+            <EntityVersionList
+              ref="versionListRef"
+              entity-type="machine"
+              :entity-id="String(machineId)"
+              :field-labels="historyFieldLabels"
+              :refresh-key="versionRefreshKey"
+              @restored="d.loadMachineData()"
+            />
+            <CommentSection
+              entity-type="machine"
+              :entity-id="String(machineId)"
+              :entity-name="d.machine.value?.name"
+              show-resolved
+            />
+          </div>
+        </template>
+      </EntityTabs>
 
       <!-- Add Entity Modal -->
       <AddEntityToMachineModal
@@ -164,35 +170,6 @@
           Enregistrer les modifications
         </button>
       </div>
-
-      <!-- Historique -->
-      <EntityHistorySection
-        :entries="history"
-        :loading="historyLoading"
-        :error="historyError"
-        :field-labels="historyFieldLabels"
-      />
-
-      <!-- Versions -->
-      <EntityVersionList
-        ref="versionListRef"
-        entity-type="machine"
-        :entity-id="String(machineId)"
-        :field-labels="historyFieldLabels"
-        :refresh-key="versionRefreshKey"
-        @restored="d.loadMachineData()"
-
-      />
-
-      <!-- Comments -->
-      <div class="mt-4">
-        <CommentSection
-          entity-type="machine"
-          :entity-id="String(machineId)"
-          :entity-name="d.machine.value?.name"
-          show-resolved
-        />
-      </div>
     </div>
 
     <!-- Error State -->
@@ -224,12 +201,11 @@
 </template>
 
 <script setup>
-import { computed, ref, onMounted } from 'vue'
+import { computed, ref, watch, onMounted } from 'vue'
 import { useRoute } from 'vue-router'
 import { useMachineDetailData } from '~/composables/useMachineDetailData'
 import { useEntityHistory } from '~/composables/useEntityHistory'
 import DocumentPreviewModal from '~/components/DocumentPreviewModal.vue'
-import PageHero from '~/components/PageHero.vue'
 import MachinePrintSelectionModal from '~/components/MachinePrintSelectionModal.vue'
 import MachineDetailHeader from '~/components/machine/MachineDetailHeader.vue'
 import MachineInfoCard from '~/components/machine/MachineInfoCard.vue'
@@ -256,6 +232,18 @@ const versionRefreshKey = ref(0)
 const refreshVersions = () => { versionRefreshKey.value++ }
 const { confirm: confirmDialog } = useConfirm()
 
+const activeTab = ref(route.query.tab || 'general')
+watch(activeTab, (val) => {
+  navigateTo({ query: { ...route.query, tab: val } }, { replace: true })
+})
+
+const machineTabs = computed(() => [
+  { key: 'general', label: 'Général' },
+  { key: 'structure', label: 'Structure', count: d.components.value.length + d.machinePieces.value.length },
+  { key: 'documents', label: 'Documents', count: d.machineDocumentsList.value.length },
+  { key: 'history', label: 'Historique' },
+])
+
 const {
   history,
   loading: historyLoading,
@@ -329,10 +317,6 @@ const handleFillEntity = (linkId, entityKind, modelTypeId) => {
   addModalOpen.value = true
 }
 
-const machineViewTitle = computed(() => {
-  return d.isEditMode.value ? 'Modification de la machine' : 'Détails de la machine'
-})
-
 const submitMachineEdition = async () => {
   if (machineInfoCardRef.value?.saveFieldDefinitions) {
     await machineInfoCardRef.value.saveFieldDefinitions()