diff --git a/services/dataProcessor.ts b/services/dataProcessor.ts
index b36f473..f6db581 100644
--- a/services/dataProcessor.ts
+++ b/services/dataProcessor.ts
@@ -667,43 +667,70 @@ export const processBSRExcel = async (fileOrBuffer: File | ArrayBuffer): Promise
         const workbook = XLSX.read(arrayBuffer, { type: 'array' });
         const allData: BSRRecord[] = [];
 
-        // Typically BSR is in the first sheet
-        const sheetName = workbook.SheetNames[0];
-        const worksheet = workbook.Sheets[sheetName];
-        const jsonData: any[] = XLSX.utils.sheet_to_json(worksheet, { defval: "" });
+        // Process all sheets — markets may be split across tabs
+        for (const sheetName of workbook.SheetNames) {
+            const worksheet = workbook.Sheets[sheetName];
+            const jsonData: any[] = XLSX.utils.sheet_to_json(worksheet, { defval: "" });
+            if (jsonData.length === 0) continue;
 
-        console.log(`Processing BSR sheet "${sheetName}": ${jsonData.length} rows`);
+            console.log(`[BSR] Processing sheet "${sheetName}": ${jsonData.length} rows. Columns:`, Object.keys(jsonData[0]));
 
-        for (let i = 0; i < jsonData.length; i++) {
-            const row = jsonData[i];
+            for (const row of jsonData) {
+                const marketRaw = getColumnValue(row, ['market', 'country', 'marketplace', 'Market', 'Country', 'Marketplace']);
+                const asinRaw = getColumnValue(row, ['asin', 'ASIN']);
+                if (!marketRaw || !asinRaw) continue;
 
-            const weekRaw = getColumnValue(row, ['week', 'woche', 'semana']);
-            const marketRaw = getColumnValue(row, ['market', 'country', 'marketplace']);
-            const asinRaw = getColumnValue(row, ['asin']);
-            const topLevelBSRRaw = getColumnValue(row, ['Mean Weekly Top Level BSR']);
-            const topLevelNameRaw = getColumnValue(row, ['Top Level Category Name']);
-            const detailLevelBSRRaw = getColumnValue(row, ['Mean Weekly Detail Level BSR']);
-            const detailLevelNameRaw = getColumnValue(row, ['Detail Level Category Name']);
-            const avgRatingRaw = getColumnValue(row, ['Mean Weekly Average Rating']);
+                // Week: try direct week column first, else derive from Date column
+                let week = 0;
+                const weekRaw = getColumnValue(row, ['week', 'woche', 'semana', 'week number', 'weeknumber', 'Week', 'Week Number']);
+                if (weekRaw) {
+                    week = parseInt(String(weekRaw).match(/\d+/)?.[0] || '0', 10);
+                }
+                if (!week) {
+                    const dateRaw = getColumnValue(row, ['date', 'fecha', 'datum', 'Date']);
+                    if (dateRaw) {
+                        const d = new Date(dateRaw);
+                        if (!isNaN(d.getTime())) {
+                            // ISO week number
+                            const tmp = new Date(d);
+                            tmp.setHours(0, 0, 0, 0);
+                            tmp.setDate(tmp.getDate() + 3 - ((tmp.getDay() + 6) % 7));
+                            const w1 = new Date(tmp.getFullYear(), 0, 4);
+                            week = 1 + Math.round(((tmp.getTime() - w1.getTime()) / 86400000 - 3 + ((w1.getDay() + 6) % 7)) / 7);
+                        }
+                    }
+                }
+                if (!week) continue;
 
-            if (!weekRaw || !marketRaw || !asinRaw) continue;
-
-            const week = parseInt(String(weekRaw).match(/\\d+/)?.[0] || '0', 10);
-            if (isNaN(week) || week === 0) continue;
-
-            allData.push({
-                week,
-                market: String(marketRaw).trim(),
-                asin: String(asinRaw).trim(),
-                topLevelBSR: parseIntSafe(String(topLevelBSRRaw)),
-                topLevelName: topLevelNameRaw ? String(topLevelNameRaw).trim() : null,
-                detailLevelBSR: parseIntSafe(String(detailLevelBSRRaw)),
-                detailLevelName: detailLevelNameRaw ? String(detailLevelNameRaw).trim() : null,
-                avgRating: parseFloat(String(avgRatingRaw)) || null,
-            });
+                allData.push({
+                    week,
+                    market: String(marketRaw).trim(),
+                    asin: String(asinRaw).trim(),
+                    topLevelBSR: parseIntSafe(getColumnValue(row, [
+                        'Mean Weekly Top Level BSR', 'Top Level Category (Rank)', 'Top Level BSR',
+                        'TopLevelBSR', 'bsr top', 'BSR Top Level', 'top level bsr',
+                    ])),
+                    topLevelName: getColumnValue(row, [
+                        'Top Level Category Name', 'Top Level Category (Name)',
+                        'TopLevelName', 'top category name', 'Top Category',
+                    ]) || null,
+                    detailLevelBSR: parseIntSafe(getColumnValue(row, [
+                        'Mean Weekly Detail Level BSR', 'Detail Level Category (Rank)', 'Detail Level BSR',
+                        'DetailLevelBSR', 'bsr detail', 'BSR Detail Level', 'detail level bsr',
+                    ])),
+                    detailLevelName: getColumnValue(row, [
+                        'Detail Level Category Name', 'Detail Level Category (Name)',
+                        'DetailLevelName', 'detail category name', 'Detail Category',
+                    ]) || null,
+                    avgRating: parseFloat(getColumnValue(row, [
+                        'Mean Weekly Average Rating', 'Average Rating', 'AvgRating',
+                        'Rating', 'avg rating',
+                    ])) || null,
+                });
+            }
         }
 
-        console.log(`Total BSR records loaded: ${allData.length}`);
+        console.log(`[BSR] Total records loaded: ${allData.length}`);
         return allData;
     } catch (error) {
         console.error("Error processing BSR Excel:", error);