diff --git a/src/app/(dashboard)/mockup/page.tsx b/src/app/(dashboard)/mockup/page.tsx
index 202bff5..81396da 100644
--- a/src/app/(dashboard)/mockup/page.tsx
+++ b/src/app/(dashboard)/mockup/page.tsx
@@ -10,6 +10,9 @@ interface Product {
   shopifyId: string
   title: string
   ref: string
+  famille?: string
+  longueur?: string
+  largeur?: string
 }
 
 export default function MockupPage() {
@@ -91,7 +94,20 @@ export default function MockupPage() {
                       <div className="absolute z-10 mt-1 w-full bg-slate-700 border border-slate-600 rounded shadow-lg max-h-56 overflow-y-auto">
                         {filtered.map(p => (
                           <button key={p.shopifyId} type="button"
-                            onMouseDown={() => { setSelectedProduct(p); setSearch(''); setShowDropdown(false) }}
+                            onMouseDown={() => {
+                              setSelectedProduct(p)
+                              setSearch('')
+                              setShowDropdown(false)
+                              fetch(`/api/products/sheet-info?ref=${encodeURIComponent(p.ref)}`)
+                                .then(r => r.ok ? r.json() : null)
+                                .then(data => {
+                                  if (!data?.product) return
+                                  const { famille, longueur, largeur } = data.product
+                                  if (famille) setFamily(famille)
+                                  if (longueur && largeur) setDimensions(`${longueur}x${largeur}cm`)
+                                  else if (longueur) setDimensions(`${longueur}cm`)
+                                })
+                            }}
                             className="w-full text-left px-3 py-2 text-sm text-white hover:bg-slate-600 flex justify-between gap-2">
                             <span className="truncate">{p.title}</span>
                             <span className="text-xs text-gray-400 shrink-0">{p.ref}</span>
diff --git a/src/app/api/mockup/generate/route.ts b/src/app/api/mockup/generate/route.ts
index 4f6eaf6..4bcf78d 100644
--- a/src/app/api/mockup/generate/route.ts
+++ b/src/app/api/mockup/generate/route.ts
@@ -6,17 +6,33 @@ import { getTemplateImagePath, listTemplates } from '@/lib/mockupTemplates'
 import type { MockupGenerateRequest } from '@/types/mockup'
 
 function buildPrompt(req: MockupGenerateRequest): string {
-  let carrelageContext = 'tiles covering the floor or wall of a modern room'
-  if (req.family === 'Carrelage' && req.placement === 'mur') {
-    carrelageContext = 'wall tiles (faïence) covering the wall of a modern bathroom or kitchen — applied only to the wall, not the floor'
-  } else if (req.family === 'Carrelage' && req.placement === 'sol') {
-    carrelageContext = 'floor tiles covering the floor of a modern room — applied only to the floor, not the walls'
+  if (req.family === 'Carrelage') {
+    let surface = 'floor or wall'
+    let restriction = ''
+    if (req.placement === 'mur') {
+      surface = 'wall'
+      restriction = ' Apply tiles only to the wall surface, not the floor.'
+    } else if (req.placement === 'sol') {
+      surface = 'floor'
+      restriction = ' Apply tiles only to the floor surface, not the walls.'
+    }
+    const dimClause = req.dimensions
+      ? ` The real-world tile size is ${req.dimensions}.`
+      : ''
+    const instructionClause = req.instruction ? ` Additional instruction: ${req.instruction}.` : ''
+
+    return `Replace the ${surface} covering in the reference scene with the provided tile image (${req.productName}).${dimClause}${restriction} CRITICAL RULES — you MUST follow all of them:
+1. Every single tile in the entire image must be EXACTLY the same size — no exceptions anywhere in the scene.
+2. The tile pattern must be a perfectly uniform grid: identical tile dimensions repeated consistently across the entire ${surface}.
+3. Tiles may be partially cut at edges, corners, or where the ${surface} meets other surfaces — but each visible portion must match the same grid unit size.
+4. NEVER vary the tile scale or apparent size in different parts of the image, even for artistic or perspective reasons.
+5. Copy the tile design, texture, color, and proportions from the provided image exactly — do not alter them.
+6. Maintain realistic lighting and perspective consistent with the reference scene.${instructionClause}`
   }
 
   const familyContext: Record<string, string> = {
     'Menuiserie': 'door installed in a residential entrance or hallway, visible wall and floor context',
     'Baies vitrées': 'bay window or sliding door installed in a living room with garden view',
-    'Carrelage': carrelageContext,
   }
   const context = familyContext[req.family] ?? 'product installed in an appropriate room setting'
   const dimClause = req.dimensions
diff --git a/src/app/api/products/sheet-info/route.ts b/src/app/api/products/sheet-info/route.ts
new file mode 100644
index 0000000..3dac30c
--- /dev/null
+++ b/src/app/api/products/sheet-info/route.ts
@@ -0,0 +1,19 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { getServerSession } from 'next-auth'
+import { authOptions } from '@/lib/auth'
+import { readSheetProducts } from '@/lib/googleSheets'
+
+export async function GET(req: NextRequest) {
+  const session = await getServerSession(authOptions)
+  if (!session) return NextResponse.json({ error: 'Non authentifié' }, { status: 401 })
+
+  const ref = new URL(req.url).searchParams.get('ref')
+  if (!ref) return NextResponse.json({ error: 'Paramètre ref manquant' }, { status: 400 })
+
+  const products = await readSheetProducts()
+  const product = products.find(p => p.ref.toLowerCase() === ref.toLowerCase())
+
+  if (!product) return NextResponse.json({ error: 'Produit non trouvé' }, { status: 404 })
+
+  return NextResponse.json({ product })
+}
diff --git a/src/components/mockup/MockupModal.tsx b/src/components/mockup/MockupModal.tsx
index 0acf950..7bebc5d 100644
--- a/src/components/mockup/MockupModal.tsx
+++ b/src/components/mockup/MockupModal.tsx
@@ -57,16 +57,18 @@ export function MockupModal({ product, onClose }: Props) {
       fetch('/api/mockup/templates').then(r => r.json()),
       fetch('/api/sheets/tabs').then(r => r.json()),
       fetch(`/api/mockup/product-meta/${product.shopifyId}`).then(r => r.json()),
-    ]).then(([tplData, tabsData, metaData]) => {
+      product.ref ? fetch(`/api/products/sheet-info?ref=${encodeURIComponent(product.ref)}`).then(r => r.ok ? r.json() : null) : Promise.resolve(null),
+    ]).then(([tplData, tabsData, metaData, sheetData]) => {
       setTemplates(tplData as MockupTemplate[])
       const tabs: string[] = (tabsData.tabs ?? []).filter((t: string) =>
         !['COLLECTIONS', 'LIVRAISONS', 'ECOPART', 'RECAP'].some(x => t.toUpperCase().includes(x))
       )
       setFamilies(tabs)
-      setFamily(tabs[0] ?? '')
+      const sheetFamille = sheetData?.product?.famille
+      setFamily(sheetFamille && tabs.includes(sheetFamille) ? sheetFamille : tabs[0] ?? '')
       setMetafields(metaData.metafields ?? [])
     }).finally(() => setLoadingMeta(false))
-  }, [product.shopifyId])
+  }, [product.shopifyId, product.ref])
 
   const isCarrelage = family.toLowerCase().includes('carrelage')
 
diff --git a/src/components/mockup/MockupModalFromImage.tsx b/src/components/mockup/MockupModalFromImage.tsx
index 30fc3e3..cc2ef5c 100644
--- a/src/components/mockup/MockupModalFromImage.tsx
+++ b/src/components/mockup/MockupModalFromImage.tsx
@@ -21,6 +21,7 @@ export function MockupModalFromImage({ item, onClose }: Props) {
   const [templates, setTemplates] = useState<MockupTemplate[]>([])
   const [families, setFamilies] = useState<string[]>([])
   const [family, setFamily] = useState('')
+  const [dimensions, setDimensions] = useState('')
   const [selectedTemplate, setSelectedTemplate] = useState<string | null>(null)
   const [instruction, setInstruction] = useState('')
   const [generating, setGenerating] = useState(false)
@@ -35,15 +36,20 @@ export function MockupModalFromImage({ item, onClose }: Props) {
     Promise.all([
       fetch('/api/mockup/templates').then(r => r.json()),
       fetch('/api/sheets/tabs').then(r => r.json()),
-    ]).then(([tplData, tabsData]) => {
+      item.ref ? fetch(`/api/products/sheet-info?ref=${encodeURIComponent(item.ref)}`).then(r => r.ok ? r.json() : null) : Promise.resolve(null),
+    ]).then(([tplData, tabsData, sheetData]) => {
       setTemplates(tplData as MockupTemplate[])
       const tabs: string[] = (tabsData.tabs ?? []).filter((t: string) =>
         !['COLLECTIONS', 'LIVRAISONS', 'ECOPART', 'RECAP'].some(x => t.toUpperCase().includes(x))
       )
       setFamilies(tabs)
-      setFamily(tabs[0] ?? '')
+      const sheetFamille = sheetData?.product?.famille
+      setFamily(sheetFamille && tabs.includes(sheetFamille) ? sheetFamille : tabs[0] ?? '')
+      const { longueur, largeur } = sheetData?.product ?? {}
+      if (longueur && largeur) setDimensions(`${longueur}x${largeur}cm`)
+      else if (longueur) setDimensions(`${longueur}cm`)
     })
-  }, [])
+  }, [item.ref])
 
   const filteredTemplates = templates.filter(t =>
     t.family === family || t.family === 'Tous'
@@ -82,6 +88,7 @@ export function MockupModalFromImage({ item, onClose }: Props) {
           productImageBase64,
           productName: item.shopifyProductTitle ?? item.ref,
           family: family || 'Tous',
+          dimensions: dimensions || undefined,
           instruction: instruction || undefined,
         }),
       })
diff --git a/src/lib/googleSheets.ts b/src/lib/googleSheets.ts
index 78eff5f..e606423 100644
--- a/src/lib/googleSheets.ts
+++ b/src/lib/googleSheets.ts
@@ -1,4 +1,5 @@
 import type { SyncProduct } from '@/types/sync'
+import { findColIndex, extractSpecificFields } from '@/lib/creationSheets'
 
 function normalizeHandle(ref: string): string {
   return ref
@@ -7,40 +8,78 @@ function normalizeHandle(ref: string): string {
     .replace(/^-+|-+$/g, '')
 }
 
-/**
- * Parse des lignes brutes Google Sheets en SyncProduct[].
- * Colonnes : A=Référence, B=Nom, C=Description, D=Prix, E=Stock, F=Statut
- * Exporté pour les tests unitaires.
- */
-const HEADER_WORDS = new Set(['id', 'ref', 'sku', 'nom', 'titre', 'reference', 'prix', 'statut'])
-
-function isValidRef(ref: string): boolean {
-  if (ref.length < 2) return false
-  if (/^[^a-zA-Z0-9]+$/.test(ref)) return false  // que des caractères spéciaux
-  if (HEADER_WORDS.has(ref.toLowerCase())) return false
-  return true
+function get(row: string[], idx: number): string {
+  return idx >= 0 ? (row[idx] ?? '').trim() : ''
 }
 
+/**
+ * Parse des lignes brutes Google Sheets en SyncProduct[].
+ * La première ligne doit être la ligne d'en-têtes.
+ * Colonnes détectées dynamiquement : UGS, Nom, Prix marché, Stock, Publié
+ */
 export function parseSheetRows(rows: string[][]): SyncProduct[] {
-  return rows
-    .map((row): SyncProduct | null => {
-      const ref = row[0]?.trim()
-      if (!ref || !isValidRef(ref)) return null
+  if (rows.length === 0) return []
 
-      const rawPrice = (row[3] ?? '').replace(',', '.').trim()
+  // Trouver la ligne d'en-têtes : celle qui contient "UGS"
+  const headerRowIndex = rows.findIndex((row) =>
+    row.some((cell) => cell?.trim().toUpperCase() === 'UGS')
+  )
+  if (headerRowIndex < 0) return []
+
+  const headers = rows[headerRowIndex].map((h) => h?.trim() ?? '')
+  const idx = {
+    sku:         findColIndex(headers, 'UGS'),
+    nom:         findColIndex(headers, 'Nom'),
+    prixMarche:  findColIndex(headers, 'Prix marché'),
+    prixRemise:  findColIndex(headers, 'Prix remisé'),
+    stock:       findColIndex(headers, 'Stock (pièce)') !== -1 ? findColIndex(headers, 'Stock (pièce)') : findColIndex(headers, 'Stock (en pièce)'),
+    publie:      findColIndex(headers, 'Publié'),
+    poids:       findColIndex(headers, 'Poids (kg) fonction unité'),
+    marque:      findColIndex(headers, 'Marque'),
+    famille:     findColIndex(headers, 'Famille'),
+    sousFamille: findColIndex(headers, 'Sous famille'),
+    longueur:    findColIndex(headers, 'Longueur'),
+    largeur:     findColIndex(headers, 'Largeur'),
+  }
+
+  // Onglet sans colonne UGS ou Prix marché = onglet non-produit, on skip
+  if (idx.sku < 0 || idx.prixMarche < 0) return []
+
+  return rows.slice(headerRowIndex + 1)
+    .map((row): SyncProduct | null => {
+      const ref = get(row, idx.sku)
+      if (!ref || ref.length < 2) return null
+
+      const rawPrice = get(row, idx.prixMarche).replace(',', '.')
       const price = parseFloat(rawPrice || '0')
 
       // Ligne sans prix valide = séparateur ou note, pas un produit
       if (isNaN(price) || price <= 0) return null
 
+      const publie = get(row, idx.publie).toLowerCase()
+      const status = publie.includes('inac') || publie === 'non' || publie === 'false' ? 'draft' : 'active'
+
+      const prixRemise = get(row, idx.prixRemise).replace(',', '.')
+      const longueur = get(row, idx.longueur)
+      const largeur = get(row, idx.largeur)
+      const specificFields = extractSpecificFields(headers, row)
+
       return {
         ref,
         handle: normalizeHandle(ref),
-        title: row[1]?.trim() || ref,
-        description: row[2]?.trim() || '',
+        title: get(row, idx.nom) || ref,
+        description: '',
         price: price.toFixed(2),
-        stock: parseInt(row[4] ?? '0', 10) || 0,
-        status: (row[5] ?? '').toLowerCase().includes('inac') ? 'draft' : 'active',
+        stock: parseInt(get(row, idx.stock) || '0', 10) || 0,
+        weightKg: parseFloat(get(row, idx.poids).replace(',', '.') || '0') || undefined,
+        status,
+        prixRemise: prixRemise || undefined,
+        marque: get(row, idx.marque) || undefined,
+        famille: get(row, idx.famille) || undefined,
+        sousFamille: get(row, idx.sousFamille) || undefined,
+        longueur: longueur || undefined,
+        largeur: largeur || undefined,
+        specificFields: Object.keys(specificFields).length > 0 ? specificFields : undefined,
       }
     })
     .filter((p): p is SyncProduct => p !== null)
@@ -84,7 +123,7 @@ async function listSheetTabs(sheetId: string, apiKey: string): Promise<string[]>
 }
 
 async function readOneTab(sheetId: string, apiKey: string, sheetName: string): Promise<SyncProduct[]> {
-  const range = encodeURIComponent(`${sheetName}!A2:F`)
+  const range = encodeURIComponent(`${sheetName}!A1:AZ`)
   const url = `https://sheets.googleapis.com/v4/spreadsheets/${sheetId}/values/${range}?key=${apiKey}`
   const res = await fetch(url)
   if (!res.ok) {
diff --git a/src/types/sync.ts b/src/types/sync.ts
index dbda7a1..c0a021f 100644
--- a/src/types/sync.ts
+++ b/src/types/sync.ts
@@ -10,6 +10,14 @@ export interface SyncProduct {
   stock: number        // colonne E
   weightKg?: number    // poids en kg pour l'expédition
   status: 'active' | 'draft'  // colonne F : "inactif"/"inactif" → draft, tout autre → active
+  // Champs enrichis
+  prixRemise?: string
+  marque?: string
+  famille?: string
+  sousFamille?: string
+  longueur?: string
+  largeur?: string
+  specificFields?: Record<string, string>
 }
 
 /** Produit Shopify enrichi pour la comparaison */