diff --git a/frontend/src/pages/BestellungDetail.tsx b/frontend/src/pages/BestellungDetail.tsx
index c6d802e..eee931b 100644
--- a/frontend/src/pages/BestellungDetail.tsx
+++ b/frontend/src/pages/BestellungDetail.tsx
@@ -250,12 +250,12 @@ export default function BestellungDetail() {
     e.target.value = '';
   }
 
-  // Compute totals
-  const totalCost = positionen.reduce((sum, p) => sum + (p.einzelpreis ?? 0) * p.menge, 0);
+  // Compute totals (NUMERIC columns come as strings from PostgreSQL — parse to float)
+  const totalCost = positionen.reduce((sum, p) => sum + (parseFloat(String(p.einzelpreis)) || 0) * (parseFloat(String(p.menge)) || 0), 0);
   const totalReceived = positionen.length > 0
-    ? positionen.reduce((sum, p) => sum + p.erhalten_menge, 0)
+    ? positionen.reduce((sum, p) => sum + (parseFloat(String(p.erhalten_menge)) || 0), 0)
     : 0;
-  const totalOrdered = positionen.reduce((sum, p) => sum + p.menge, 0);
+  const totalOrdered = positionen.reduce((sum, p) => sum + (parseFloat(String(p.menge)) || 0), 0);
   const receivedPercent = totalOrdered > 0 ? Math.round((totalReceived / totalOrdered) * 100) : 0;
 
   // ── Loading / Error ──
@@ -371,7 +371,12 @@ export default function BestellungDetail() {
           <Typography variant="body2" color="text.secondary" sx={{ mb: 0.5 }}>
             Lieferfortschritt: {totalReceived} / {totalOrdered} ({receivedPercent}%)
           </Typography>
-          <LinearProgress variant="determinate" value={receivedPercent} sx={{ height: 8, borderRadius: 4 }} />
+          <LinearProgress
+            variant="determinate"
+            value={receivedPercent}
+            color={receivedPercent >= 100 ? 'success' : 'primary'}
+            sx={{ height: 8, borderRadius: 4 }}
+          />
         </Box>
       )}