diff --git a/src/features/admin/OrganizationDetailPage.tsx b/src/features/admin/OrganizationDetailPage.tsx
index 9c4fa01..d02474a 100644
--- a/src/features/admin/OrganizationDetailPage.tsx
+++ b/src/features/admin/OrganizationDetailPage.tsx
@@ -1,6 +1,6 @@
 import { useEffect, useState } from 'react'
 import { useParams, useNavigate, Link } from '@tanstack/react-router'
-import { ArrowLeft, FileText, Users, FolderX, UserX, GitBranch } from 'lucide-react'
+import { ArrowLeft, FileText, Users, FolderX, UserX, GitBranch, FolderOpen, Plus, Pencil, Trash2 } from 'lucide-react'
 import { supabase } from '@/lib/supabase'
 import { Button } from '@/components/ui/button'
 import { Skeleton } from '@/components/ui/skeleton'
@@ -20,14 +20,25 @@ import {
   SelectValue,
 } from '@/components/ui/select'
 import { RoleBadge } from './RoleBadge'
+import { supabaseAreaRepo } from '@/persistence/supabase/area-repo'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
 
 interface OrgProcess {
   id: string
   name: string
   client: string | null
+  area_id: string | null
   updated_at: string
 }
 
+interface AreaWithCount {
+  id: string
+  name: string
+  description: string | null
+  processCount: number
+}
+
 interface OrgUser {
   id: string
   name: string | null
@@ -66,16 +77,53 @@ export function OrganizationDetailPage() {
   const [assigning, setAssigning] = useState(false)
   const [assignError, setAssignError] = useState<string | null>(null)
 
+  // Áreas de la org
+  const [areas, setAreas] = useState<AreaWithCount[]>([])
+  const [areasLoading, setAreasLoading] = useState(false)
+
+  // Sheet crear/editar área
+  const [areaSheetOpen, setAreaSheetOpen] = useState(false)
+  const [editingAreaId, setEditingAreaId] = useState<string | null>(null)
+  const [areaNameInput, setAreaNameInput] = useState('')
+  const [savingArea, setSavingArea] = useState(false)
+  const [areaFormError, setAreaFormError] = useState<string | null>(null)
+
+  // Confirmación de delete
+  const [deleteConfirmId, setDeleteConfirmId] = useState<string | null>(null)
+  const [deletingAreaId, setDeletingAreaId] = useState<string | null>(null)
+
   const fetchDetail = async () => {
     const [orgRes, procRes, userRes] = await Promise.all([
       supabase.from('organizations').select('name').eq('id', orgId).single(),
-      supabase.from('processes').select('id, name, client, updated_at').eq('org_id', orgId).order('updated_at', { ascending: false }),
+      supabase
+        .from('processes')
+        .select('id, name, client, area_id, updated_at')
+        .eq('org_id', orgId)
+        .order('updated_at', { ascending: false }),
       supabase.from('users').select('id, name, company, platform_role, avatar_url').eq('org_id', orgId).order('name'),
     ])
     if (orgRes.data) setOrgName((orgRes.data as { name: string }).name)
-    setProcesses((procRes.data as OrgProcess[] | null) ?? [])
+    const loadedProcesses = (procRes.data as OrgProcess[] | null) ?? []
+    setProcesses(loadedProcesses)
     setUsers((userRes.data as OrgUser[] | null) ?? [])
     setLoading(false)
+
+    // Cargar áreas y calcular conteo de procesos
+    setAreasLoading(true)
+    try {
+      const rawAreas = await supabaseAreaRepo.getByOrg(orgId)
+      const withCount: AreaWithCount[] = rawAreas.map((a) => ({
+        id: a.id,
+        name: a.name,
+        description: a.description,
+        processCount: loadedProcesses.filter((p) => p.area_id === a.id).length,
+      }))
+      setAreas(withCount)
+    } catch {
+      setAreas([])
+    } finally {
+      setAreasLoading(false)
+    }
   }
 
   useEffect(() => { void fetchDetail() }, [orgId])
@@ -114,6 +162,53 @@ export function OrganizationDetailPage() {
     }
   }
 
+  const openCreateArea = () => {
+    setEditingAreaId(null)
+    setAreaNameInput('')
+    setAreaFormError(null)
+    setAreaSheetOpen(true)
+  }
+
+  const openEditArea = (area: AreaWithCount) => {
+    setEditingAreaId(area.id)
+    setAreaNameInput(area.name)
+    setAreaFormError(null)
+    setAreaSheetOpen(true)
+  }
+
+  const handleSaveArea = async () => {
+    const name = areaNameInput.trim()
+    if (!name) { setAreaFormError('El nombre del área es requerido'); return }
+    setSavingArea(true)
+    setAreaFormError(null)
+    try {
+      if (editingAreaId) {
+        await supabaseAreaRepo.update(editingAreaId, { name })
+      } else {
+        await supabaseAreaRepo.create({ orgId, name })
+      }
+      setAreaSheetOpen(false)
+      void fetchDetail()
+    } catch (e) {
+      setAreaFormError(e instanceof Error ? e.message : 'Error al guardar el área')
+    } finally {
+      setSavingArea(false)
+    }
+  }
+
+  const handleDeleteArea = async (areaId: string) => {
+    setDeletingAreaId(areaId)
+    try {
+      await supabaseAreaRepo.delete(areaId)
+      setDeleteConfirmId(null)
+      void fetchDetail()
+    } catch (e) {
+      console.error('Error eliminando área:', e)
+    } finally {
+      setDeletingAreaId(null)
+    }
+  }
+
   if (loading) {
     return (
       <div className="flex flex-col gap-4">
@@ -148,6 +243,10 @@ export function OrganizationDetailPage() {
             <Users className="h-4 w-4 mr-1.5" />
             Usuarios ({users.length})
           </TabsTrigger>
+          <TabsTrigger value="areas">
+            <FolderOpen className="h-4 w-4 mr-1.5" />
+            Áreas ({areas.length})
+          </TabsTrigger>
         </TabsList>
 
         {/* ─── Tab: Procesos ─────────────────────────────────────────────── */}
@@ -240,6 +339,105 @@ export function OrganizationDetailPage() {
             </div>
           )}
         </TabsContent>
+        {/* ─── Tab: Áreas ──────────────────────────────────────────────── */}
+        <TabsContent value="areas">
+          <div className="flex items-center justify-between mb-4">
+            <p className="text-sm text-slate-500">
+              {areasLoading
+                ? 'Cargando áreas…'
+                : areas.length === 0
+                  ? 'No hay áreas en esta organización.'
+                  : `${areas.length} área${areas.length !== 1 ? 's' : ''}.`}
+            </p>
+            <Button size="sm" variant="outline" onClick={openCreateArea}>
+              <Plus className="h-4 w-4 mr-1.5" />
+              Nueva área
+            </Button>
+          </div>
+
+          {areasLoading ? (
+            <div className="space-y-2">
+              <Skeleton className="h-12 w-full" />
+              <Skeleton className="h-12 w-full" />
+            </div>
+          ) : areas.length === 0 ? (
+            <EmptyState
+              icon={<FolderOpen className="h-10 w-10 text-slate-300" />}
+              message="Las áreas agrupan procesos dentro de una organización (ej: Operaciones, RR.HH., Finanzas)."
+            />
+          ) : (
+            <div className="rounded-lg border border-slate-200 overflow-hidden bg-white">
+              <table className="w-full text-sm">
+                <thead className="bg-slate-50 border-b border-slate-200">
+                  <tr>
+                    <th className="text-left py-2.5 px-4 font-medium text-slate-600">Área</th>
+                    <th className="text-left py-2.5 px-4 font-medium text-slate-600">Procesos</th>
+                    <th className="py-2.5 px-4" />
+                  </tr>
+                </thead>
+                <tbody>
+                  {areas.map((area) => (
+                    <tr key={area.id} className="border-b border-slate-100 last:border-0 hover:bg-slate-50/50">
+                      <td className="py-3 px-4 font-medium text-slate-900">{area.name}</td>
+                      <td className="py-3 px-4 text-slate-500">
+                        {area.processCount} {area.processCount === 1 ? 'proceso' : 'procesos'}
+                      </td>
+                      <td className="py-3 px-4">
+                        {deleteConfirmId === area.id ? (
+                          <div className="flex items-center justify-end gap-2">
+                            <span className="text-xs text-slate-500">
+                              {area.processCount > 0
+                                ? `${area.processCount} proceso${area.processCount !== 1 ? 's' : ''} quedarán sin área.`
+                                : '¿Eliminar esta área?'}
+                            </span>
+                            <Button
+                              size="sm"
+                              variant="destructive"
+                              className="h-7 text-xs px-2"
+                              disabled={deletingAreaId === area.id}
+                              onClick={() => handleDeleteArea(area.id)}
+                            >
+                              {deletingAreaId === area.id ? 'Eliminando…' : 'Confirmar'}
+                            </Button>
+                            <Button
+                              size="sm"
+                              variant="ghost"
+                              className="h-7 text-xs px-2"
+                              onClick={() => setDeleteConfirmId(null)}
+                            >
+                              Cancelar
+                            </Button>
+                          </div>
+                        ) : (
+                          <div className="flex items-center justify-end gap-1">
+                            <Button
+                              size="sm"
+                              variant="ghost"
+                              className="h-7 w-7 p-0 text-slate-400 hover:text-slate-700"
+                              onClick={() => openEditArea(area)}
+                              title="Renombrar área"
+                            >
+                              <Pencil className="h-3.5 w-3.5" />
+                            </Button>
+                            <Button
+                              size="sm"
+                              variant="ghost"
+                              className="h-7 w-7 p-0 text-slate-400 hover:text-red-600"
+                              onClick={() => setDeleteConfirmId(area.id)}
+                              title="Eliminar área"
+                            >
+                              <Trash2 className="h-3.5 w-3.5" />
+                            </Button>
+                          </div>
+                        )}
+                      </td>
+                    </tr>
+                  ))}
+                </tbody>
+              </table>
+            </div>
+          )}
+        </TabsContent>
       </Tabs>
 
       {/* ─── Sheet: Asignar proceso ─────────────────────────────────────── */}
@@ -277,6 +475,40 @@ export function OrganizationDetailPage() {
           </div>
         </SheetContent>
       </Sheet>
+      {/* ─── Sheet: Crear/editar área ────────────────────────────────── */}
+      <Sheet open={areaSheetOpen} onOpenChange={setAreaSheetOpen}>
+        <SheetContent>
+          <SheetHeader>
+            <SheetTitle>
+              {editingAreaId ? 'Renombrar área' : `Nueva área en ${orgName}`}
+            </SheetTitle>
+          </SheetHeader>
+          <div className="mt-5 flex flex-col gap-4">
+            <div className="space-y-1.5">
+              <Label htmlFor="area-name" className="text-sm font-medium">
+                Nombre del área
+              </Label>
+              <Input
+                id="area-name"
+                value={areaNameInput}
+                onChange={(e) => { setAreaNameInput(e.target.value); setAreaFormError(null) }}
+                placeholder="ej. Operaciones, RR.HH., Finanzas"
+                className="h-9"
+                onKeyDown={(e) => { if (e.key === 'Enter') void handleSaveArea() }}
+                autoFocus
+              />
+              {areaFormError && (
+                <p className="text-xs text-red-600">{areaFormError}</p>
+              )}
+            </div>
+            <SheetFooter>
+              <Button onClick={handleSaveArea} disabled={savingArea || !areaNameInput.trim()}>
+                {savingArea ? 'Guardando…' : editingAreaId ? 'Guardar cambios' : 'Crear área'}
+              </Button>
+            </SheetFooter>
+          </div>
+        </SheetContent>
+      </Sheet>
     </>
   )
 }