diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 0bca39f..8db44e0 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,5 +1,11 @@
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
 import { BrowserRouter, Route, Routes } from 'react-router-dom'
+import { Layout } from './components/Layout'
+import { Dashboard } from './pages/Dashboard'
+import { GenerateCalendar } from './pages/GenerateCalendar'
+import { GenerateSingle } from './pages/GenerateSingle'
+import { OutputReview } from './pages/OutputReview'
+import { Settings } from './pages/Settings'
 
 const queryClient = new QueryClient({
   defaultOptions: {
@@ -10,25 +16,20 @@ const queryClient = new QueryClient({
   },
 })
 
-function HomePage() {
-  return (
-    <div className="min-h-screen bg-gray-950 text-gray-100 flex items-center justify-center">
-      <div className="text-center space-y-4">
-        <h1 className="text-4xl font-bold tracking-tight">PostGenerator</h1>
-        <p className="text-gray-400 text-lg">Setup completo — pronto per la business logic.</p>
-      </div>
-    </div>
-  )
-}
-
 function App() {
   return (
     <QueryClientProvider client={queryClient}>
       {/* basename must match the nginx subpath and Vite base config */}
       <BrowserRouter basename="/postgenerator">
-        <Routes>
-          <Route path="/" element={<HomePage />} />
-        </Routes>
+        <Layout>
+          <Routes>
+            <Route path="/" element={<Dashboard />} />
+            <Route path="/genera" element={<GenerateCalendar />} />
+            <Route path="/genera-singolo" element={<GenerateSingle />} />
+            <Route path="/risultati/:jobId" element={<OutputReview />} />
+            <Route path="/impostazioni" element={<Settings />} />
+          </Routes>
+        </Layout>
       </BrowserRouter>
     </QueryClientProvider>
   )
diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index 4aabc91..f9eaab1 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -43,3 +43,67 @@ export async function apiFetch<T>(
 
   return response.json() as Promise<T>
 }
+
+/** GET request typed helper */
+export function apiGet<T>(endpoint: string): Promise<T> {
+  return apiFetch<T>(endpoint, { method: 'GET' })
+}
+
+/** POST request typed helper */
+export function apiPost<T>(endpoint: string, body?: unknown): Promise<T> {
+  return apiFetch<T>(endpoint, {
+    method: 'POST',
+    body: body !== undefined ? JSON.stringify(body) : undefined,
+  })
+}
+
+/** PUT request typed helper */
+export function apiPut<T>(endpoint: string, body?: unknown): Promise<T> {
+  return apiFetch<T>(endpoint, {
+    method: 'PUT',
+    body: body !== undefined ? JSON.stringify(body) : undefined,
+  })
+}
+
+/**
+ * Download file helper — returns a Blob from a GET or POST endpoint.
+ * Used for CSV export.
+ */
+export async function apiDownload(
+  endpoint: string,
+  method: 'GET' | 'POST' = 'GET',
+  body?: unknown,
+): Promise<Blob> {
+  const url = `${API_BASE}${endpoint}`
+
+  const response = await fetch(url, {
+    method,
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: body !== undefined ? JSON.stringify(body) : undefined,
+  })
+
+  if (!response.ok) {
+    const text = await response.text().catch(() => '')
+    throw new Error(
+      `Download error ${response.status} ${response.statusText}${text ? `: ${text}` : ''}`,
+    )
+  }
+
+  return response.blob()
+}
+
+/**
+ * Trigger a browser file download from a Blob.
+ */
+export function triggerDownload(blob: Blob, filename: string): void {
+  const url = URL.createObjectURL(blob)
+  const a = document.createElement('a')
+  a.href = url
+  a.download = filename
+  document.body.appendChild(a)
+  a.click()
+  document.body.removeChild(a)
+  URL.revokeObjectURL(url)
+}
diff --git a/frontend/src/api/hooks.ts b/frontend/src/api/hooks.ts
new file mode 100644
index 0000000..2d9206d
--- /dev/null
+++ b/frontend/src/api/hooks.ts
@@ -0,0 +1,186 @@
+/**
+ * TanStack Query hooks per tutte le API calls del PostGenerator.
+ *
+ * Pattern generale:
+ * - useQuery per lettura dati (GET)
+ * - useMutation per scrittura dati (POST/PUT)
+ * - Polling condizionale: refetchInterval attivo solo quando job in running
+ *
+ * Tutti gli endpoint usano API_BASE='/postgenerator/api' via apiGet/apiPost/apiPut/apiDownload.
+ */
+
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { apiDownload, apiGet, apiPost, apiPut, triggerDownload } from './client'
+import type {
+  CalendarRequest,
+  CalendarResponse,
+  FormatsResponse,
+  GenerateRequest,
+  GenerateResponse,
+  JobStatus,
+  PostResult,
+  Settings,
+  SettingsStatus,
+} from '../types'
+
+// ---------------------------------------------------------------------------
+// Settings
+// ---------------------------------------------------------------------------
+
+/** Carica le impostazioni correnti. api_key è mascherata (ultimi 4 char). */
+export function useSettings() {
+  return useQuery<Settings>({
+    queryKey: ['settings'],
+    queryFn: () => apiGet<Settings>('/settings'),
+    staleTime: 60_000,
+  })
+}
+
+/** Verifica se API key è configurata e quale modello è attivo. */
+export function useSettingsStatus() {
+  return useQuery<SettingsStatus>({
+    queryKey: ['settings', 'status'],
+    queryFn: () => apiGet<SettingsStatus>('/settings/status'),
+    staleTime: 30_000,
+    refetchOnWindowFocus: true,
+  })
+}
+
+/** Aggiorna le impostazioni via PUT /api/settings. */
+export function useUpdateSettings() {
+  const queryClient = useQueryClient()
+  return useMutation<Settings, Error, Partial<Settings>>({
+    mutationFn: (settings) => apiPut<Settings>('/settings', settings),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['settings'] })
+    },
+  })
+}
+
+// ---------------------------------------------------------------------------
+// Calendario
+// ---------------------------------------------------------------------------
+
+/** Recupera i formati narrativi disponibili (7 formati). */
+export function useFormats() {
+  return useQuery<FormatsResponse>({
+    queryKey: ['calendar', 'formats'],
+    queryFn: () => apiGet<FormatsResponse>('/calendar/formats'),
+    staleTime: Infinity, // i formati non cambiano mai
+  })
+}
+
+// ---------------------------------------------------------------------------
+// Generazione bulk (async con job_id)
+// ---------------------------------------------------------------------------
+
+/**
+ * Avvia generazione batch di 13 post.
+ * Risponde 202 con {job_id, message} — la generazione gira in background.
+ * Il frontend deve fare polling su useJobStatus(jobId).
+ */
+export function useGenerateCalendar() {
+  return useMutation<{ job_id: string; message: string }, Error, CalendarRequest>({
+    mutationFn: (request) =>
+      apiPost<{ job_id: string; message: string }>('/generate/bulk', request),
+  })
+}
+
+/**
+ * Polling stato job. refetchInterval attivo solo quando status='running'.
+ * Smette di pollare automaticamente quando status diventa 'completed' o 'failed'.
+ */
+export function useJobStatus(jobId: string | null) {
+  return useQuery<JobStatus>({
+    queryKey: ['jobs', jobId, 'status'],
+    queryFn: () => apiGet<JobStatus>(`/generate/job/${jobId}/status`),
+    enabled: !!jobId,
+    refetchInterval: (query) => {
+      const status = query.state.data?.status
+      // Polla ogni 2s solo quando il job è in esecuzione
+      if (status === 'running') return 2000
+      return false
+    },
+    staleTime: 0,
+  })
+}
+
+/**
+ * Risultati completi di un job completato.
+ * Usato in OutputReview dopo che il job ha status='completed'.
+ */
+export function useJobResults(jobId: string | null) {
+  return useQuery<GenerateResponse>({
+    queryKey: ['jobs', jobId, 'results'],
+    queryFn: () => apiGet<GenerateResponse>(`/generate/job/${jobId}`),
+    enabled: !!jobId,
+    staleTime: 60_000,
+  })
+}
+
+// ---------------------------------------------------------------------------
+// Generazione singolo post
+// ---------------------------------------------------------------------------
+
+/**
+ * Genera un singolo post (sync — ritorna PostResult direttamente).
+ * Usato per rigenerare post falliti o in GenerateSingle.
+ */
+export function useGenerateSingle() {
+  return useMutation<PostResult, Error, GenerateRequest>({
+    mutationFn: (request) => apiPost<PostResult>('/generate/single', request),
+  })
+}
+
+// ---------------------------------------------------------------------------
+// Calendar generation (sync, per CalendarRequest -> CalendarResponse)
+// ---------------------------------------------------------------------------
+
+/**
+ * Genera calendario editoriale (sync).
+ * Diverso da useGenerateCalendar: questo chiama POST /api/calendar/generate
+ * che ritorna i slot del calendario senza generare il contenuto LLM.
+ */
+export function useGenerateCalendarPlan() {
+  return useMutation<CalendarResponse, Error, CalendarRequest>({
+    mutationFn: (request) =>
+      apiPost<CalendarResponse>('/calendar/generate', request),
+  })
+}
+
+// ---------------------------------------------------------------------------
+// Export CSV
+// ---------------------------------------------------------------------------
+
+/**
+ * Scarica il CSV originale del job (GET /api/export/{jobId}/csv).
+ * Triggera download browser automaticamente.
+ */
+export function useDownloadCsv() {
+  return useMutation<void, Error, string>({
+    mutationFn: async (jobId: string) => {
+      const blob = await apiDownload(`/export/${jobId}/csv`, 'GET')
+      triggerDownload(blob, `postgenerator-${jobId}.csv`)
+    },
+  })
+}
+
+/**
+ * Scarica il CSV con le modifiche inline (POST /api/export/{jobId}/csv).
+ * Invia i risultati modificati e triggera download browser.
+ */
+export function useDownloadEditedCsv() {
+  return useMutation<
+    void,
+    Error,
+    { jobId: string; results: PostResult[]; campagna: string }
+  >({
+    mutationFn: async ({ jobId, results, campagna }) => {
+      const blob = await apiDownload(`/export/${jobId}/csv`, 'POST', {
+        results,
+        campagna,
+      })
+      triggerDownload(blob, `postgenerator-${jobId}-edited.csv`)
+    },
+  })
+}
diff --git a/frontend/src/components/Layout.tsx b/frontend/src/components/Layout.tsx
new file mode 100644
index 0000000..3a4bb92
--- /dev/null
+++ b/frontend/src/components/Layout.tsx
@@ -0,0 +1,22 @@
+/**
+ * Layout wrapper principale con Sidebar a sinistra e area contenuto a destra.
+ * Tutti i child sono renderizzati nell'area contenuto scrollabile.
+ */
+
+import type { ReactNode } from 'react'
+import { Sidebar } from './Sidebar'
+
+interface LayoutProps {
+  children: ReactNode
+}
+
+export function Layout({ children }: LayoutProps) {
+  return (
+    <div className="flex min-h-screen bg-stone-900 text-stone-100">
+      <Sidebar />
+      <main className="flex-1 overflow-y-auto">
+        {children}
+      </main>
+    </div>
+  )
+}
diff --git a/frontend/src/components/Sidebar.tsx b/frontend/src/components/Sidebar.tsx
new file mode 100644
index 0000000..a46be18
--- /dev/null
+++ b/frontend/src/components/Sidebar.tsx
@@ -0,0 +1,85 @@
+/**
+ * Sidebar di navigazione principale.
+ * Logo + link di navigazione con evidenziazione route attiva.
+ * Usa NavLink da react-router-dom per active state automatico.
+ */
+
+import { BarChart2, Calendar, FileText, Home, Settings } from 'lucide-react'
+import { NavLink } from 'react-router-dom'
+
+interface NavItem {
+  to: string
+  label: string
+  icon: React.ReactNode
+  end?: boolean
+}
+
+const navItems: NavItem[] = [
+  {
+    to: '/',
+    label: 'Dashboard',
+    icon: <Home size={18} />,
+    end: true,
+  },
+  {
+    to: '/genera',
+    label: 'Genera Calendario',
+    icon: <Calendar size={18} />,
+  },
+  {
+    to: '/genera-singolo',
+    label: 'Genera Singolo Post',
+    icon: <FileText size={18} />,
+  },
+  {
+    to: '/impostazioni',
+    label: 'Impostazioni',
+    icon: <Settings size={18} />,
+  },
+]
+
+export function Sidebar() {
+  return (
+    <aside className="w-60 min-h-screen bg-stone-950 border-r border-stone-800 flex flex-col">
+      {/* Logo / Titolo */}
+      <div className="px-5 py-6 border-b border-stone-800">
+        <div className="flex items-center gap-2.5">
+          <div className="w-8 h-8 rounded-lg bg-amber-500 flex items-center justify-center flex-shrink-0">
+            <BarChart2 size={16} className="text-stone-950" />
+          </div>
+          <div>
+            <p className="text-sm font-semibold text-stone-100 leading-tight">PostGenerator</p>
+            <p className="text-xs text-stone-500 leading-tight">by Michele</p>
+          </div>
+        </div>
+      </div>
+
+      {/* Navigazione */}
+      <nav className="flex-1 px-3 py-4 space-y-0.5">
+        {navItems.map((item) => (
+          <NavLink
+            key={item.to}
+            to={item.to}
+            end={item.end}
+            className={({ isActive }) =>
+              [
+                'flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm transition-colors',
+                isActive
+                  ? 'bg-amber-500/15 text-amber-400 font-medium'
+                  : 'text-stone-400 hover:text-stone-200 hover:bg-stone-800/60',
+              ].join(' ')
+            }
+          >
+            <span className="flex-shrink-0">{item.icon}</span>
+            <span>{item.label}</span>
+          </NavLink>
+        ))}
+      </nav>
+
+      {/* Footer sidebar */}
+      <div className="px-5 py-4 border-t border-stone-800">
+        <p className="text-xs text-stone-600">v1.0 — Core Pipeline</p>
+      </div>
+    </aside>
+  )
+}
diff --git a/frontend/src/pages/Dashboard.tsx b/frontend/src/pages/Dashboard.tsx
new file mode 100644
index 0000000..43d9c8d
--- /dev/null
+++ b/frontend/src/pages/Dashboard.tsx
@@ -0,0 +1,139 @@
+/**
+ * Dashboard principale.
+ * Mostra stato API key e quick actions per iniziare.
+ */
+
+import { AlertTriangle, ArrowRight, Calendar, FileText, Settings } from 'lucide-react'
+import { Link } from 'react-router-dom'
+import { useSettingsStatus } from '../api/hooks'
+
+export function Dashboard() {
+  const { data: status, isLoading } = useSettingsStatus()
+
+  const apiKeyOk = status?.api_key_configured ?? false
+
+  return (
+    <div className="max-w-3xl mx-auto px-6 py-10 space-y-8">
+      {/* Header */}
+      <div>
+        <h1 className="text-2xl font-bold text-stone-100">Dashboard</h1>
+        <p className="mt-1 text-stone-400 text-sm">
+          Genera un calendario editoriale di 13 caroselli Instagram strategici, pronti per Canva.
+        </p>
+      </div>
+
+      {/* Banner API key non configurata */}
+      {!isLoading && !apiKeyOk && (
+        <div className="flex items-start gap-3 px-4 py-3 rounded-lg bg-amber-500/10 border border-amber-500/30">
+          <AlertTriangle size={18} className="text-amber-400 flex-shrink-0 mt-0.5" />
+          <div className="text-sm">
+            <p className="text-amber-300 font-medium">API key Claude non configurata</p>
+            <p className="text-stone-400 mt-0.5">
+              Devi configurare la tua API key Anthropic prima di poter generare contenuti.{' '}
+              <Link to="/impostazioni" className="text-amber-400 underline underline-offset-2 hover:text-amber-300">
+                Vai alle Impostazioni
+              </Link>
+            </p>
+          </div>
+        </div>
+      )}
+
+      {/* Banner API key OK */}
+      {!isLoading && apiKeyOk && (
+        <div className="flex items-center gap-3 px-4 py-3 rounded-lg bg-emerald-500/10 border border-emerald-500/30">
+          <div className="w-2 h-2 rounded-full bg-emerald-400 flex-shrink-0" />
+          <p className="text-sm text-emerald-300">
+            API key configurata — modello: <span className="font-mono text-xs">{status?.llm_model}</span>
+          </p>
+        </div>
+      )}
+
+      {/* Quick actions */}
+      <div className="space-y-3">
+        <h2 className="text-xs font-semibold text-stone-500 uppercase tracking-wider">Azioni rapide</h2>
+
+        <div className="grid gap-3 sm:grid-cols-2">
+          <Link
+            to="/genera"
+            className={[
+              'group flex items-center justify-between px-5 py-4 rounded-xl border transition-all',
+              apiKeyOk
+                ? 'bg-stone-800 border-stone-700 hover:border-amber-500/50 hover:bg-stone-700/80'
+                : 'bg-stone-800/40 border-stone-800 opacity-60 cursor-not-allowed pointer-events-none',
+            ].join(' ')}
+          >
+            <div className="flex items-center gap-3">
+              <div className="w-9 h-9 rounded-lg bg-amber-500/15 flex items-center justify-center">
+                <Calendar size={18} className="text-amber-400" />
+              </div>
+              <div>
+                <p className="text-sm font-medium text-stone-100">Genera Calendario</p>
+                <p className="text-xs text-stone-500">13 post in un click</p>
+              </div>
+            </div>
+            <ArrowRight size={16} className="text-stone-600 group-hover:text-stone-300 transition-colors" />
+          </Link>
+
+          <Link
+            to="/genera-singolo"
+            className={[
+              'group flex items-center justify-between px-5 py-4 rounded-xl border transition-all',
+              apiKeyOk
+                ? 'bg-stone-800 border-stone-700 hover:border-amber-500/50 hover:bg-stone-700/80'
+                : 'bg-stone-800/40 border-stone-800 opacity-60 cursor-not-allowed pointer-events-none',
+            ].join(' ')}
+          >
+            <div className="flex items-center gap-3">
+              <div className="w-9 h-9 rounded-lg bg-stone-700 flex items-center justify-center">
+                <FileText size={18} className="text-stone-400" />
+              </div>
+              <div>
+                <p className="text-sm font-medium text-stone-100">Genera Singolo Post</p>
+                <p className="text-xs text-stone-500">Test e rigenerazione</p>
+              </div>
+            </div>
+            <ArrowRight size={16} className="text-stone-600 group-hover:text-stone-300 transition-colors" />
+          </Link>
+
+          <Link
+            to="/impostazioni"
+            className="group flex items-center justify-between px-5 py-4 rounded-xl border bg-stone-800 border-stone-700 hover:border-stone-600 hover:bg-stone-700/80 transition-all"
+          >
+            <div className="flex items-center gap-3">
+              <div className="w-9 h-9 rounded-lg bg-stone-700 flex items-center justify-center">
+                <Settings size={18} className="text-stone-400" />
+              </div>
+              <div>
+                <p className="text-sm font-medium text-stone-100">Impostazioni</p>
+                <p className="text-xs text-stone-500">API key, modello, nicchie</p>
+              </div>
+            </div>
+            <ArrowRight size={16} className="text-stone-600 group-hover:text-stone-300 transition-colors" />
+          </Link>
+        </div>
+      </div>
+
+      {/* Descrizione sistema */}
+      <div className="space-y-3">
+        <h2 className="text-xs font-semibold text-stone-500 uppercase tracking-wider">Come funziona</h2>
+        <div className="grid gap-2 sm:grid-cols-3">
+          {[
+            { n: '1', title: 'Configura', desc: 'Aggiungi API key e scegli le nicchie target' },
+            { n: '2', title: 'Genera', desc: 'Inserisci obiettivo campagna, Claude crea 13 post' },
+            { n: '3', title: 'Esporta', desc: 'Scarica il CSV pronto per Canva Bulk Create' },
+          ].map((step) => (
+            <div key={step.n} className="px-4 py-3 rounded-lg bg-stone-800/50 border border-stone-800">
+              <div className="flex items-center gap-2 mb-1.5">
+                <span className="w-5 h-5 rounded-full bg-amber-500/20 text-amber-400 text-xs font-bold flex items-center justify-center">
+                  {step.n}
+                </span>
+                <span className="text-sm font-medium text-stone-200">{step.title}</span>
+              </div>
+              <p className="text-xs text-stone-500">{step.desc}</p>
+            </div>
+          ))}
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/frontend/src/pages/GenerateCalendar.tsx b/frontend/src/pages/GenerateCalendar.tsx
new file mode 100644
index 0000000..ff88184
--- /dev/null
+++ b/frontend/src/pages/GenerateCalendar.tsx
@@ -0,0 +1,6 @@
+/**
+ * Pagina Genera Calendario (stub — completata nel Task 2c)
+ */
+export function GenerateCalendar() {
+  return <div className="p-6 text-stone-400">Genera Calendario — in costruzione</div>
+}
diff --git a/frontend/src/pages/GenerateSingle.tsx b/frontend/src/pages/GenerateSingle.tsx
new file mode 100644
index 0000000..4e021f1
--- /dev/null
+++ b/frontend/src/pages/GenerateSingle.tsx
@@ -0,0 +1,6 @@
+/**
+ * Pagina Genera Singolo Post (stub — completata nel Task 2c)
+ */
+export function GenerateSingle() {
+  return <div className="p-6 text-stone-400">Genera Singolo Post — in costruzione</div>
+}
diff --git a/frontend/src/pages/OutputReview.tsx b/frontend/src/pages/OutputReview.tsx
new file mode 100644
index 0000000..5b0870b
--- /dev/null
+++ b/frontend/src/pages/OutputReview.tsx
@@ -0,0 +1,6 @@
+/**
+ * Pagina Output Review (stub — completata nel Task 2c)
+ */
+export function OutputReview() {
+  return <div className="p-6 text-stone-400">Output Review — in costruzione</div>
+}
diff --git a/frontend/src/pages/Settings.tsx b/frontend/src/pages/Settings.tsx
new file mode 100644
index 0000000..5c4a6f8
--- /dev/null
+++ b/frontend/src/pages/Settings.tsx
@@ -0,0 +1,252 @@
+/**
+ * Pagina Impostazioni.
+ * Configura API key Claude, modello LLM, brand, tono, nicchie, frequenza.
+ */
+
+import { Check, Eye, EyeOff, Loader2 } from 'lucide-react'
+import { useEffect, useState } from 'react'
+import { useSettings, useUpdateSettings } from '../api/hooks'
+import type { Settings as SettingsType } from '../types'
+
+const ALL_NICCHIE = ['generico', 'dentisti', 'avvocati', 'ecommerce', 'local_business', 'agenzie']
+
+const NICCHIA_LABELS: Record<string, string> = {
+  generico: 'Generico',
+  dentisti: 'Dentisti',
+  avvocati: 'Avvocati',
+  ecommerce: 'E-commerce',
+  local_business: 'Local Business',
+  agenzie: 'Agenzie',
+}
+
+const LLM_MODELS = [
+  { value: 'claude-sonnet-4-5', label: 'Claude Sonnet 4.5 (raccomandato)' },
+  { value: 'claude-haiku-3-5', label: 'Claude Haiku 3.5 (più veloce, meno costoso)' },
+]
+
+export function Settings() {
+  const { data: settings, isLoading } = useSettings()
+  const updateMutation = useUpdateSettings()
+
+  const [form, setForm] = useState<Partial<SettingsType>>({})
+  const [showApiKey, setShowApiKey] = useState(false)
+  const [saved, setSaved] = useState(false)
+
+  // Popola il form quando i settings arrivano dal backend
+  useEffect(() => {
+    if (settings) {
+      setForm({
+        api_key: '',  // Non pre-populare l'API key (mascherata)
+        llm_model: settings.llm_model,
+        nicchie_attive: settings.nicchie_attive,
+        lingua: settings.lingua,
+        frequenza_post: settings.frequenza_post,
+        brand_name: settings.brand_name ?? '',
+        tono: settings.tono ?? 'diretto e concreto',
+      })
+    }
+  }, [settings])
+
+  function handleNicchiaToggle(nicchia: string) {
+    setForm((prev) => {
+      const current = prev.nicchie_attive ?? []
+      if (current.includes(nicchia)) {
+        // Non permettere di deselezionare tutte le nicchie
+        if (current.length <= 1) return prev
+        return { ...prev, nicchie_attive: current.filter((n) => n !== nicchia) }
+      }
+      return { ...prev, nicchie_attive: [...current, nicchia] }
+    })
+  }
+
+  async function handleSubmit(e: React.FormEvent) {
+    e.preventDefault()
+
+    // Prepara il payload: non inviare api_key se vuota (evita sovrascrittura)
+    const payload: Partial<SettingsType> = { ...form }
+    if (!payload.api_key || payload.api_key.trim() === '') {
+      delete payload.api_key
+    }
+
+    try {
+      await updateMutation.mutateAsync(payload)
+      setSaved(true)
+      setForm((prev) => ({ ...prev, api_key: '' })) // Reset campo API key dopo salvataggio
+      setTimeout(() => setSaved(false), 3000)
+    } catch {
+      // L'errore è gestito da updateMutation.error
+    }
+  }
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center min-h-64">
+        <Loader2 className="animate-spin text-stone-500" size={24} />
+      </div>
+    )
+  }
+
+  return (
+    <div className="max-w-2xl mx-auto px-6 py-10 space-y-8">
+      <div>
+        <h1 className="text-2xl font-bold text-stone-100">Impostazioni</h1>
+        <p className="mt-1 text-stone-400 text-sm">
+          Configura API key, modello LLM e parametri di generazione.
+        </p>
+      </div>
+
+      <form onSubmit={handleSubmit} className="space-y-6">
+
+        {/* API Key */}
+        <section className="space-y-4">
+          <h2 className="text-xs font-semibold text-stone-500 uppercase tracking-wider">Anthropic</h2>
+          <div className="space-y-1.5">
+            <label className="block text-sm font-medium text-stone-300">
+              API Key Claude
+            </label>
+            <div className="relative">
+              <input
+                type={showApiKey ? 'text' : 'password'}
+                value={form.api_key ?? ''}
+                onChange={(e) => setForm((p) => ({ ...p, api_key: e.target.value }))}
+                placeholder={settings?.api_key ? '••••••••••••••••' : 'sk-ant-...'}
+                className="w-full px-3 py-2 pr-10 rounded-lg bg-stone-800 border border-stone-700 text-stone-100 text-sm placeholder-stone-600 focus:outline-none focus:ring-2 focus:ring-amber-500/50 focus:border-amber-500/50"
+              />
+              <button
+                type="button"
+                onClick={() => setShowApiKey((v) => !v)}
+                className="absolute right-2.5 top-1/2 -translate-y-1/2 text-stone-500 hover:text-stone-300 transition-colors"
+              >
+                {showApiKey ? <EyeOff size={16} /> : <Eye size={16} />}
+              </button>
+            </div>
+            <p className="text-xs text-stone-600">
+              {settings?.api_key
+                ? 'API key già configurata. Inserisci una nuova per sostituirla.'
+                : 'Richiesta per la generazione. Ottienila su console.anthropic.com'}
+            </p>
+          </div>
+
+          <div className="space-y-1.5">
+            <label className="block text-sm font-medium text-stone-300">Modello LLM</label>
+            <select
+              value={form.llm_model ?? 'claude-sonnet-4-5'}
+              onChange={(e) => setForm((p) => ({ ...p, llm_model: e.target.value }))}
+              className="w-full px-3 py-2 rounded-lg bg-stone-800 border border-stone-700 text-stone-100 text-sm focus:outline-none focus:ring-2 focus:ring-amber-500/50 focus:border-amber-500/50"
+            >
+              {LLM_MODELS.map((m) => (
+                <option key={m.value} value={m.value}>{m.label}</option>
+              ))}
+            </select>
+          </div>
+        </section>
+
+        {/* Brand */}
+        <section className="space-y-4">
+          <h2 className="text-xs font-semibold text-stone-500 uppercase tracking-wider">Brand</h2>
+          <div className="space-y-1.5">
+            <label className="block text-sm font-medium text-stone-300">
+              Nome Brand / Studio <span className="text-stone-600 font-normal">(opzionale)</span>
+            </label>
+            <input
+              type="text"
+              value={form.brand_name ?? ''}
+              onChange={(e) => setForm((p) => ({ ...p, brand_name: e.target.value || null }))}
+              placeholder="Es. Studio Rossi & Associati"
+              className="w-full px-3 py-2 rounded-lg bg-stone-800 border border-stone-700 text-stone-100 text-sm placeholder-stone-600 focus:outline-none focus:ring-2 focus:ring-amber-500/50 focus:border-amber-500/50"
+            />
+          </div>
+
+          <div className="space-y-1.5">
+            <label className="block text-sm font-medium text-stone-300">Tono di voce</label>
+            <input
+              type="text"
+              value={form.tono ?? 'diretto e concreto'}
+              onChange={(e) => setForm((p) => ({ ...p, tono: e.target.value }))}
+              placeholder="Es. professionale ma amichevole"
+              className="w-full px-3 py-2 rounded-lg bg-stone-800 border border-stone-700 text-stone-100 text-sm placeholder-stone-600 focus:outline-none focus:ring-2 focus:ring-amber-500/50 focus:border-amber-500/50"
+            />
+          </div>
+        </section>
+
+        {/* Calendario */}
+        <section className="space-y-4">
+          <h2 className="text-xs font-semibold text-stone-500 uppercase tracking-wider">Calendario</h2>
+          <div className="space-y-1.5">
+            <label className="block text-sm font-medium text-stone-300">
+              Frequenza post settimanale
+            </label>
+            <input
+              type="number"
+              min={1}
+              max={7}
+              value={form.frequenza_post ?? 3}
+              onChange={(e) => setForm((p) => ({ ...p, frequenza_post: parseInt(e.target.value) || 3 }))}
+              className="w-24 px-3 py-2 rounded-lg bg-stone-800 border border-stone-700 text-stone-100 text-sm focus:outline-none focus:ring-2 focus:ring-amber-500/50 focus:border-amber-500/50"
+            />
+            <p className="text-xs text-stone-600">Da 1 a 7 post a settimana. Default: 3 (lun, mer, ven).</p>
+          </div>
+
+          <div className="space-y-2">
+            <label className="block text-sm font-medium text-stone-300">Nicchie attive</label>
+            <div className="grid grid-cols-2 sm:grid-cols-3 gap-2">
+              {ALL_NICCHIE.map((nicchia) => {
+                const isActive = (form.nicchie_attive ?? []).includes(nicchia)
+                return (
+                  <button
+                    key={nicchia}
+                    type="button"
+                    onClick={() => handleNicchiaToggle(nicchia)}
+                    className={[
+                      'flex items-center gap-2 px-3 py-2 rounded-lg border text-sm transition-all text-left',
+                      isActive
+                        ? 'bg-amber-500/15 border-amber-500/40 text-amber-300'
+                        : 'bg-stone-800 border-stone-700 text-stone-400 hover:border-stone-600',
+                    ].join(' ')}
+                  >
+                    <span
+                      className={[
+                        'w-4 h-4 rounded border flex-shrink-0 flex items-center justify-center',
+                        isActive ? 'bg-amber-500 border-amber-500' : 'border-stone-600',
+                      ].join(' ')}
+                    >
+                      {isActive && <Check size={10} className="text-stone-950" />}
+                    </span>
+                    {NICCHIA_LABELS[nicchia] ?? nicchia}
+                  </button>
+                )
+              })}
+            </div>
+            <p className="text-xs text-stone-600">"Generico" è sempre incluso automaticamente nel 50% degli slot.</p>
+          </div>
+        </section>
+
+        {/* Errore / Successo */}
+        {updateMutation.error && (
+          <div className="px-4 py-3 rounded-lg bg-red-500/10 border border-red-500/30 text-sm text-red-400">
+            {updateMutation.error.message}
+          </div>
+        )}
+
+        {/* Submit */}
+        <div className="flex items-center gap-3 pt-2">
+          <button
+            type="submit"
+            disabled={updateMutation.isPending}
+            className="flex items-center gap-2 px-5 py-2.5 rounded-lg bg-amber-500 text-stone-950 text-sm font-semibold hover:bg-amber-400 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
+          >
+            {updateMutation.isPending && <Loader2 size={14} className="animate-spin" />}
+            Salva impostazioni
+          </button>
+
+          {saved && (
+            <div className="flex items-center gap-1.5 text-sm text-emerald-400">
+              <Check size={14} />
+              Salvato!
+            </div>
+          )}
+        </div>
+      </form>
+    </div>
+  )
+}
diff --git a/frontend/src/types.ts b/frontend/src/types.ts
new file mode 100644
index 0000000..a905d7d
--- /dev/null
+++ b/frontend/src/types.ts
@@ -0,0 +1,160 @@
+/**
+ * TypeScript types che rispecchiano gli schemas Pydantic del backend PostGenerator.
+ *
+ * Mantenere sincronizzato con:
+ * - backend/schemas/calendar.py
+ * - backend/schemas/generate.py
+ * - backend/schemas/settings.py
+ * - backend/routers/generate.py (JobStatusResponse)
+ */
+
+// ---------------------------------------------------------------------------
+// Calendario editoriale
+// ---------------------------------------------------------------------------
+
+export interface CalendarSlot {
+  indice: number
+  tipo_contenuto: TipoContenuto
+  livello_schwartz: LivelloSchwartz
+  formato_narrativo: FormatoNarrativo
+  funzione: string
+  fase_campagna: string
+  target_nicchia: string
+  data_pub_suggerita: string // YYYY-MM-DD
+  topic?: string | null
+}
+
+export interface CalendarRequest {
+  obiettivo_campagna: string
+  settimane?: number
+  nicchie?: string[] | null
+  frequenza_post?: number
+  data_inizio?: string | null
+}
+
+export interface CalendarResponse {
+  campagna: string
+  slots: CalendarSlot[]
+  totale_post: number
+}
+
+// ---------------------------------------------------------------------------
+// Tipi di dominio (valori fissi dal backend)
+// ---------------------------------------------------------------------------
+
+export type TipoContenuto =
+  | 'valore'
+  | 'storytelling'
+  | 'news'
+  | 'riprova_sociale'
+  | 'coinvolgimento'
+  | 'promozione'
+
+export type LivelloSchwartz = 'L1' | 'L2' | 'L3' | 'L4' | 'L5'
+
+export type FormatoNarrativo =
+  | 'PAS'
+  | 'AIDA'
+  | 'BAB'
+  | 'Listicle'
+  | 'Storytelling'
+  | 'Dato_Implicazione'
+  | 'Obiezione_Risposta'
+
+// ---------------------------------------------------------------------------
+// Post generati (output LLM)
+// ---------------------------------------------------------------------------
+
+export interface SlideContent {
+  headline: string
+  body: string
+  image_keyword: string
+}
+
+export interface GeneratedPost {
+  // Cover slide
+  cover_title: string
+  cover_subtitle: string
+  cover_image_keyword: string
+  // Slide centrali (s2-s7) — sempre 6
+  slides: SlideContent[]
+  // CTA slide
+  cta_text: string
+  cta_subtext: string
+  cta_image_keyword: string
+  // Caption Instagram
+  caption_instagram: string
+}
+
+export type PostStatus = 'success' | 'failed' | 'pending'
+
+export interface PostResult {
+  slot_index: number
+  status: PostStatus
+  post?: GeneratedPost | null
+  error?: string | null
+  // slot viene aggiunto dal frontend dopo merge con CalendarSlot
+  slot?: CalendarSlot
+}
+
+export interface GenerateResponse {
+  campagna: string
+  results: PostResult[]
+  total: number
+  success_count: number
+  failed_count: number
+}
+
+// ---------------------------------------------------------------------------
+// Job status (polling)
+// ---------------------------------------------------------------------------
+
+export type JobStatusType = 'running' | 'completed' | 'failed'
+
+export interface JobStatus {
+  job_id: string
+  status: JobStatusType
+  total: number
+  completed: number
+  current_post: number
+  results: PostResult[]
+  error?: string | null
+}
+
+// ---------------------------------------------------------------------------
+// Richiesta generazione singolo post
+// ---------------------------------------------------------------------------
+
+export interface GenerateRequest {
+  slot: CalendarSlot
+  obiettivo_campagna: string
+  brand_name?: string | null
+  tono?: string | null
+}
+
+// ---------------------------------------------------------------------------
+// Settings
+// ---------------------------------------------------------------------------
+
+export interface Settings {
+  api_key?: string | null
+  llm_model: string
+  nicchie_attive: string[]
+  lingua: string
+  frequenza_post: number
+  brand_name?: string | null
+  tono?: string | null
+}
+
+export interface SettingsStatus {
+  api_key_configured: boolean
+  llm_model: string
+}
+
+// ---------------------------------------------------------------------------
+// Formati narrativi (risposta GET /api/calendar/formats)
+// ---------------------------------------------------------------------------
+
+export interface FormatsResponse {
+  [formato: string]: string
+}