diff --git a/app/api/auth/register/route.ts b/app/api/auth/register/route.ts
index c2d0687..4f183c1 100644
--- a/app/api/auth/register/route.ts
+++ b/app/api/auth/register/route.ts
@@ -33,7 +33,7 @@ export async function POST(request: Request) {
     )
   }
 
-  const clienteRole = await prisma.role.findUnique({ where: { nombre: "Cliente" } })
+  const clienteRole = await prisma.role.findUnique({ where: { name: "Cliente" } })
 
   const hashed = await bcrypt.hash(password, 12)
 
diff --git a/app/api/roles/[id]/route.ts b/app/api/roles/[id]/route.ts
index 204a775..919be41 100644
--- a/app/api/roles/[id]/route.ts
+++ b/app/api/roles/[id]/route.ts
@@ -28,8 +28,8 @@ export async function PUT(request: Request, { params }: RouteContext) {
     const rolActualizado = await prisma.role.update({
       where: { id: parsedId.data },
       data: {
-        nombre: parsed.data.nombre,
-        descripcion: parsed.data.descripcion,
+        name: parsed.data.name,
+        description: parsed.data.description,
       },
     });
 
diff --git a/app/api/roles/route.ts b/app/api/roles/route.ts
index f088181..15d980e 100644
--- a/app/api/roles/route.ts
+++ b/app/api/roles/route.ts
@@ -20,8 +20,8 @@ export async function GET(request: Request) {
     const where: Prisma.RoleWhereInput = {};
     if (search !== '') {
       where.OR = [
-        { nombre: { contains: search } },
-        { descripcion: { contains: search } },
+        { name: { contains: search } },
+        { description: { contains: search } },
       ];
     }
 
@@ -59,8 +59,8 @@ export async function POST(request: Request) {
 
     const nuevoRol = await prisma.role.create({
       data: {
-        nombre: parsed.data.nombre,
-        descripcion: parsed.data.descripcion,
+        name: parsed.data.name,
+        description: parsed.data.description,
       },
     });
 
diff --git a/app/api/users/[id]/route.ts b/app/api/users/[id]/route.ts
index 73d0ca2..0148691 100644
--- a/app/api/users/[id]/route.ts
+++ b/app/api/users/[id]/route.ts
@@ -2,7 +2,7 @@ import { NextResponse } from 'next/server';
 import prisma from '../../../../lib/prisma';
 
 export const runtime = 'nodejs'
-import { updateUserSchema, idParamSchema } from '../../../../lib/validations';
+import { updateUserSchema, userIdParamSchema } from '../../../../lib/validations';
 import { requireAdmin } from '../../../../lib/api-auth';
 
 type RouteContext = { params: Promise<{ id: string }> };
@@ -14,7 +14,7 @@ export async function PUT(request: Request, { params }: RouteContext) {
 
   try {
     const { id } = await params;
-    const parsedId = idParamSchema.safeParse(id);
+    const parsedId = userIdParamSchema.safeParse(id);
     if (!parsedId.success) {
       return NextResponse.json({ error: "ID inválido" }, { status: 400 });
     }
@@ -45,7 +45,7 @@ export async function DELETE(request: Request, { params }: RouteContext) {
 
   try {
     const { id } = await params;
-    const parsedId = idParamSchema.safeParse(id);
+    const parsedId = userIdParamSchema.safeParse(id);
     if (!parsedId.success) {
       return NextResponse.json({ error: "ID inválido" }, { status: 400 });
     }
@@ -68,7 +68,7 @@ export async function PATCH(request: Request, { params }: RouteContext) {
 
   try {
     const { id } = await params;
-    const parsedId = idParamSchema.safeParse(id);
+    const parsedId = userIdParamSchema.safeParse(id);
     if (!parsedId.success) {
       return NextResponse.json({ error: "ID inválido" }, { status: 400 });
     }
diff --git a/app/dashboard/page.tsx b/app/dashboard/page.tsx
index b2f668b..c73d59c 100644
--- a/app/dashboard/page.tsx
+++ b/app/dashboard/page.tsx
@@ -78,14 +78,14 @@ export default async function DashboardPage() {
 
   const [totalUsuarios, totalRoles, usuariosActivos, usuariosPendientes, nuevosClientes, recientes] =
     await Promise.all([
-      prisma.user.count({ where: { role: { nombre: "Cliente" }, deletedAt: null } }),
+      prisma.user.count({ where: { role: { name: "Cliente" }, deletedAt: null } }),
       prisma.role.count(),
       prisma.user.count({ where: { emailVerified: true, deletedAt: null } }),
       prisma.user.count({ where: { emailVerified: false, deletedAt: null } }),
       prisma.user.count({
         where: {
           createdAt: { gte: sieteDiasAtras },
-          role: { nombre: "Cliente" },
+          role: { name: "Cliente" },
           deletedAt: null,
         },
       }),
@@ -196,7 +196,7 @@ export default async function DashboardPage() {
                         </TableCell>
                         <TableCell className="text-muted-foreground">{usuario.email}</TableCell>
                         <TableCell>
-                          <Badge variant="outline">{usuario.role?.nombre ?? "Sin rol"}</Badge>
+                          <Badge variant="outline">{usuario.role?.name ?? "Sin rol"}</Badge>
                         </TableCell>
                         <TableCell className="hidden text-muted-foreground sm:table-cell">
                           {dateFormatter.format(usuario.createdAt)}
diff --git a/app/dashboard/roles/page.tsx b/app/dashboard/roles/page.tsx
index abbae80..8ca2149 100644
--- a/app/dashboard/roles/page.tsx
+++ b/app/dashboard/roles/page.tsx
@@ -33,10 +33,10 @@ import {
 } from "@/components/ui/pagination";
 import { toast } from "sonner";
 
-type Role = { id: number; nombre: string; descripcion: string | null; creadoEn: string };
-type RoleForm = { nombre: string; descripcion: string };
-type EditingRole = { id: number; nombre: string; descripcion: string } | null;
-type ConfirmDelete = { id: number; nombre: string } | null;
+type Role = { id: number; name: string; description: string | null; createdAt: string };
+type RoleForm = { name: string; description: string };
+type EditingRole = { id: number; name: string; description: string } | null;
+type ConfirmDelete = { id: number; name: string } | null;
 
 const LIMIT = 5;
 
@@ -50,7 +50,7 @@ const getPageNumbers = (current: number, total: number): (number | "ellipsis")[]
   return pages;
 };
 
-const emptyForm: RoleForm = { nombre: "", descripcion: "" };
+const emptyForm: RoleForm = { name: "", description: "" };
 
 export default function RolesPage() {
   const [roles, setRoles] = useState<Role[]>([]);
@@ -115,7 +115,7 @@ export default function RolesPage() {
       const res = await fetch(`/api/roles/${editingRole.id}`, {
         method: "PUT",
         headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ nombre: editingRole.nombre, descripcion: editingRole.descripcion }),
+        body: JSON.stringify({ name: editingRole.name, description: editingRole.description }),
       });
       if (!res.ok) {
         const data = await res.json();
@@ -181,10 +181,10 @@ export default function RolesPage() {
               roles.map((role) => (
                 <TableRow key={role.id}>
                   <TableCell>{role.id}</TableCell>
-                  <TableCell className="font-medium">{role.nombre}</TableCell>
-                  <TableCell className="hidden text-muted-foreground md:table-cell">{role.descripcion || "—"}</TableCell>
+                  <TableCell className="font-medium">{role.name}</TableCell>
+                  <TableCell className="hidden text-muted-foreground md:table-cell">{role.description || "—"}</TableCell>
                   <TableCell className="hidden text-muted-foreground sm:table-cell">
-                    {new Date(role.creadoEn).toLocaleDateString("es-MX")}
+                    {new Date(role.createdAt).toLocaleDateString("es-MX")}
                   </TableCell>
                   <TableCell className="text-right">
                     <div className="flex justify-end gap-1">
@@ -195,8 +195,8 @@ export default function RolesPage() {
                         onClick={() =>
                           setEditingRole({
                             id: role.id,
-                            nombre: role.nombre,
-                            descripcion: role.descripcion ?? "",
+                            name: role.name,
+                            description: role.description ?? "",
                           })
                         }
                       >
@@ -207,7 +207,7 @@ export default function RolesPage() {
                         size="icon-sm"
                         aria-label="Eliminar"
                         className="hover:text-destructive"
-                        onClick={() => setConfirmDelete({ id: role.id, nombre: role.nombre })}
+                        onClick={() => setConfirmDelete({ id: role.id, name: role.name })}
                       >
                         <Trash2 size={14} />
                       </Button>
@@ -274,8 +274,8 @@ export default function RolesPage() {
               <Label htmlFor="create-nombre">Nombre</Label>
               <Input
                 id="create-nombre"
-                value={createForm.nombre}
-                onChange={(e) => setCreateForm((f) => ({ ...f, nombre: e.target.value }))}
+                value={createForm.name}
+                onChange={(e) => setCreateForm((f) => ({ ...f, name: e.target.value }))}
                 required
               />
             </div>
@@ -283,8 +283,8 @@ export default function RolesPage() {
               <Label htmlFor="create-descripcion">Descripción</Label>
               <Textarea
                 id="create-descripcion"
-                value={createForm.descripcion}
-                onChange={(e) => setCreateForm((f) => ({ ...f, descripcion: e.target.value }))}
+                value={createForm.description}
+                onChange={(e) => setCreateForm((f) => ({ ...f, description: e.target.value }))}
               />
             </div>
             <DialogFooter>
@@ -308,9 +308,9 @@ export default function RolesPage() {
               <Label htmlFor="edit-nombre">Nombre</Label>
               <Input
                 id="edit-nombre"
-                value={editingRole?.nombre || ""}
+                value={editingRole?.name || ""}
                 onChange={(e) =>
-                  setEditingRole((r) => (r ? { ...r, nombre: e.target.value } : null))
+                  setEditingRole((r) => (r ? { ...r, name: e.target.value } : null))
                 }
               />
             </div>
@@ -318,9 +318,9 @@ export default function RolesPage() {
               <Label htmlFor="edit-descripcion">Descripción</Label>
               <Textarea
                 id="edit-descripcion"
-                value={editingRole?.descripcion || ""}
+                value={editingRole?.description || ""}
                 onChange={(e) =>
-                  setEditingRole((r) => (r ? { ...r, descripcion: e.target.value } : null))
+                  setEditingRole((r) => (r ? { ...r, description: e.target.value } : null))
                 }
               />
             </div>
@@ -340,7 +340,7 @@ export default function RolesPage() {
           <AlertDialogHeader>
             <AlertDialogTitle className="text-center">¿Eliminar rol?</AlertDialogTitle>
             <AlertDialogDescription className="text-center">
-              Se eliminará el rol &quot;{confirmDelete?.nombre}&quot; de forma permanente.
+              Se eliminará el rol &quot;{confirmDelete?.name}&quot; de forma permanente.
             </AlertDialogDescription>
           </AlertDialogHeader>
           <div className="flex justify-center gap-2 pt-2">
diff --git a/app/dashboard/usuarios/page.tsx b/app/dashboard/usuarios/page.tsx
index b873075..c7eb9e1 100644
--- a/app/dashboard/usuarios/page.tsx
+++ b/app/dashboard/usuarios/page.tsx
@@ -30,8 +30,8 @@ import {
 import { toast } from "sonner";
 import { cn } from "@/lib/utils";
 
-type EditingUser = { id: number; name: string; email: string };
-type ConfirmDelete = { id: number; name: string } | null;
+type EditingUser = { id: string; name: string; email: string };
+type ConfirmDelete = { id: string; name: string } | null;
 
 const LIMIT = 5;
 
@@ -118,13 +118,13 @@ export default function UsuariosPage() {
     }
   };
 
-  const handleDelete = async (id: number) => {
+  const handleDelete = async (id: string) => {
     await fetch(`/api/users/${id}`, { method: "DELETE" });
     fetchUsuarios(currentPage);
     toast.success("Usuario movido a la papelera");
   };
 
-  const handleRestore = async (id: number) => {
+  const handleRestore = async (id: string) => {
     await fetch(`/api/users/${id}`, { method: "PATCH" });
     fetchUsuarios(currentPage);
     toast.success("Usuario restaurado");
diff --git a/lib/auth.config.ts b/lib/auth.config.ts
index 1cc61e2..e33e9ce 100644
--- a/lib/auth.config.ts
+++ b/lib/auth.config.ts
@@ -14,14 +14,14 @@ export const authConfig = {
       const existingUser = await prisma.user.findUnique({ where: { email } })
 
       if (!existingUser) {
-        const clienteRole = await prisma.role.findUnique({ where: { nombre: "Cliente" } })
+        const clienteRole = await prisma.role.findUnique({ where: { name: "Cliente" } })
         await prisma.user.create({
           data: {
             name: user.name ?? profile?.name ?? email,
             email,
             password: null,
             emailVerified: true,
-            roleId: clienteRole?.id ?? null,
+            roleId: clienteRole?.id,
           },
         })
       } else if (!existingUser.emailVerified) {
@@ -40,8 +40,8 @@ export const authConfig = {
           where: { email: token.email },
           include: { role: true },
         })
-        if (dbUser) token.id = String(dbUser.id)
-        token.role = dbUser?.role?.nombre ?? null
+        if (dbUser) token.id = dbUser.id
+        token.role = dbUser?.role?.name ?? null
       }
       return token
     },
diff --git a/lib/auth.ts b/lib/auth.ts
index c092047..312b7a4 100644
--- a/lib/auth.ts
+++ b/lib/auth.ts
@@ -38,7 +38,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 
         if (!user.emailVerified) throw new EmailNotVerifiedError()
 
-        return { id: String(user.id), email: user.email, name: user.name }
+        return { id: user.id, email: user.email, name: user.name }
       },
     }),
     Google,
diff --git a/lib/validations.ts b/lib/validations.ts
index ed9357b..9379d08 100644
--- a/lib/validations.ts
+++ b/lib/validations.ts
@@ -22,9 +22,12 @@ export const resetPasswordSchema = z.object({
   password: passwordSchema,
 })
 
-/** Valida params dinámicos [id]: deben ser enteros positivos. */
+/** Valida params dinámicos [id] de Role: deben ser enteros positivos. */
 export const idParamSchema = z.coerce.number().int().positive()
 
+/** Valida params dinámicos [id] de User: deben ser UUID. */
+export const userIdParamSchema = z.uuid()
+
 export const createUserSchema = z.object({
   name: z.string().min(2, "Mínimo 2 caracteres").max(100),
   email: z.string().email("Email inválido"),
@@ -33,8 +36,8 @@ export const createUserSchema = z.object({
 export const updateUserSchema = createUserSchema.partial()
 
 export const createRoleSchema = z.object({
-  nombre: z.string().min(2, "Mínimo 2 caracteres").max(100),
-  descripcion: z.string().max(255).optional(),
+  name: z.string().min(2, "Mínimo 2 caracteres").max(100),
+  description: z.string().max(255).optional(),
 })
 
 export const updateRoleSchema = createRoleSchema.partial()
diff --git a/prisma.config.ts b/prisma.config.ts
index cfb31f4..9eb86c6 100644
--- a/prisma.config.ts
+++ b/prisma.config.ts
@@ -4,9 +4,9 @@ import { defineConfig } from "@prisma/config";
 export default defineConfig({
   schema: "prisma/schema.prisma",
   migrations: {
-    seed: "npx tsx prisma/seed.ts",
+    seed: "npx tsx prisma/seed-roles.ts && npx tsx prisma/seed.ts",
   },
   datasource: {
-    url: process.env.DATABASE_URL!,
+    url: process.env.DIRECT_URL ?? process.env.DATABASE_URL!,
   },
 });
\ No newline at end of file
diff --git a/prisma/migrations/20260612020953_uuid_pk_and_role_i18n/migration.sql b/prisma/migrations/20260612020953_uuid_pk_and_role_i18n/migration.sql
new file mode 100644
index 0000000..1c5dde1
--- /dev/null
+++ b/prisma/migrations/20260612020953_uuid_pk_and_role_i18n/migration.sql
@@ -0,0 +1,30 @@
+-- DropForeignKey
+ALTER TABLE "User" DROP CONSTRAINT "User_roleId_fkey";
+
+-- DropIndex
+DROP INDEX "Role_nombre_key";
+
+-- AlterTable
+ALTER TABLE "Role" DROP COLUMN "creadoEn",
+DROP COLUMN "descripcion",
+DROP COLUMN "nombre",
+ADD COLUMN     "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+ADD COLUMN     "description" TEXT,
+ADD COLUMN     "name" TEXT NOT NULL;
+
+-- AlterTable
+ALTER TABLE "User" DROP CONSTRAINT "User_pkey",
+DROP COLUMN "id",
+ADD COLUMN     "id" UUID NOT NULL,
+ALTER COLUMN "roleId" SET NOT NULL,
+ALTER COLUMN "roleId" SET DEFAULT 2,
+ADD CONSTRAINT "User_pkey" PRIMARY KEY ("id");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Role_name_key" ON "Role"("name");
+
+-- CreateIndex
+CREATE INDEX "User_roleId_idx" ON "User"("roleId");
+
+-- AddForeignKey
+ALTER TABLE "User" ADD CONSTRAINT "User_roleId_fkey" FOREIGN KEY ("roleId") REFERENCES "Role"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 5d2adbc..733c4e2 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -7,7 +7,7 @@ datasource db {
 }
 
 model User {
-  id             Int       @id @default(autoincrement())
+  id             String    @id @default(uuid()) @db.Uuid
   name           String
   email          String    @unique
   password       String?
@@ -16,16 +16,18 @@ model User {
   verifyTokenExp DateTime?
   resetToken     String?   @unique
   resetTokenExp  DateTime?
-  roleId         Int?
-  role           Role?     @relation(fields: [roleId], references: [id])
+  roleId         Int       @default(2)
+  role           Role      @relation(fields: [roleId], references: [id], onDelete: Restrict)
   createdAt      DateTime  @default(now())
   deletedAt      DateTime?
+
+  @@index([roleId])
 }
 
 model Role {
   id          Int      @id @default(autoincrement())
-  nombre      String   @unique
-  descripcion String?
-  creadoEn    DateTime @default(now())
+  name        String   @unique
+  description String?
+  createdAt   DateTime @default(now())
   users       User[]
 }
\ No newline at end of file
diff --git a/prisma/seed-roles.ts b/prisma/seed-roles.ts
index 053cd25..2c4ccb3 100644
--- a/prisma/seed-roles.ts
+++ b/prisma/seed-roles.ts
@@ -7,15 +7,15 @@ const prisma = new PrismaClient({ adapter })
 
 async function main() {
   await prisma.role.upsert({
-    where: { nombre: "Admin" },
+    where: { name: "Admin" },
     update: {},
-    create: { nombre: "Admin", descripcion: "Acceso completo al sistema" },
+    create: { name: "Admin", description: "Acceso completo al sistema" },
   })
 
   await prisma.role.upsert({
-    where: { nombre: "Cliente" },
+    where: { name: "Cliente" },
     update: {},
-    create: { nombre: "Cliente", descripcion: "Usuario cliente del estudio" },
+    create: { name: "Cliente", description: "Usuario cliente del estudio" },
   })
 
   console.log("✓ Roles base creados: Admin, Cliente")
diff --git a/prisma/seed.ts b/prisma/seed.ts
index 0f1ba67..f42ba70 100644
--- a/prisma/seed.ts
+++ b/prisma/seed.ts
@@ -7,6 +7,7 @@ const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL })
 const prisma = new PrismaClient({ adapter })
 
 async function main() {
+  const adminRole = await prisma.role.findUniqueOrThrow({ where: { name: "Admin" } })
   const hashed = await bcrypt.hash("admin123", 10)
 
   await prisma.user.upsert({
@@ -17,6 +18,7 @@ async function main() {
       name: "Admin",
       password: hashed,
       emailVerified: true,
+      roleId: adminRole.id,
     },
   })