diff --git a/App.tsx b/App.tsx
index a76ba95..3ddc7ec 100644
--- a/App.tsx
+++ b/App.tsx
@@ -229,7 +229,8 @@ const App: React.FC = () => {
       const buffer = await response.arrayBuffer();
       const data = await processBuyBoxExcel(buffer);
       setBuyBoxLostMap(data);
-      console.log('[App] Successfully loaded Buy Box lost data for', data.size, 'ASINs');
+      (window as any).debugBuyBox = data;
+      console.log('[App] Successfully loaded Buy Box lost data for', data.size, 'ASINs. Access via window.debugBuyBox');
     } catch (error) {
       console.error("Failed to fetch/parse Buy Box data", error);
     }
diff --git a/services/dataProcessor.ts b/services/dataProcessor.ts
index aa08150..921c2e6 100644
--- a/services/dataProcessor.ts
+++ b/services/dataProcessor.ts
@@ -2168,8 +2168,16 @@ export const processBuyBoxExcel = async (fileOrBuffer: File | ArrayBuffer): Prom
             const sheetName = workbook.SheetNames.find(name => {
                 const n = name.toUpperCase().replace(/[-_ ]/g, '');
                 const target = config.sheet.toUpperCase().replace(/[-_ ]/g, '');
-                // Also match if the sheet is just the country code or contains 'BB' and the country code
-                return n === target || n === config.country || (n.includes('BB') && n.includes(config.country));
+                const country = config.country.toUpperCase();
+                // Match if:
+                // 1. Exact pattern (BB_ES)
+                // 2. Just the country code (ES)
+                // 3. Contains 'BB' and the country code
+                // 4. Special cases for Spain (SPAIN, ESPAÑA)
+                return n === target ||
+                    n === country ||
+                    (n.includes('BB') && n.includes(country)) ||
+                    (country === 'ES' && (n.includes('SPAIN') || n.includes('ESPAÑA') || n.includes('ESPANA')));
             });
 
             if (!sheetName) {