diff --git a/src/components/SeedBlender.tsx b/src/components/SeedBlender.tsx
index 444064b..d8e4dbc 100644
--- a/src/components/SeedBlender.tsx
+++ b/src/components/SeedBlender.tsx
@@ -96,18 +96,23 @@ export function SeedBlender({ onDirtyStateChange, setMnemonicForBackup, requestT
         const validMnemonics = entries.map(e => e.decryptedMnemonic).filter((m): m is string => m !== null && m.length > 0);
         
         const validityPromises = entries.map(async (entry) => {
-            if (!entry.rawInput.trim()) return null;
-            if (entry.isEncrypted && !entry.decryptedMnemonic) return null; // Cannot validate until decrypted
+            if (!entry.rawInput.trim()) return { isValid: null, error: null };
+            if (entry.isEncrypted && !entry.decryptedMnemonic) return { isValid: null, error: null };
+            
             const textToValidate = entry.decryptedMnemonic || entry.rawInput;
             try {
                 await mnemonicToEntropy(textToValidate.trim());
-                return true;
-            } catch {
-                return false;
+                return { isValid: true, error: null };
+            } catch (e: any) {
+                return { isValid: false, error: e.message || "Invalid mnemonic" };
             }
         });
-        const newValidity = await Promise.all(validityPromises);
-        setEntries(currentEntries => currentEntries.map((e, i) => ({ ...e, isValid: newValidity[i] })));
+        const newValidationResults = await Promise.all(validityPromises);
+        setEntries(currentEntries => currentEntries.map((e, i) => ({ 
+            ...e, 
+            isValid: newValidationResults[i]?.isValid ?? e.isValid,
+            error: newValidationResults[i]?.error ?? e.error,
+        })));
 
         if (validMnemonics.length > 0) {
             try {
@@ -223,16 +228,19 @@ export function SeedBlender({ onDirtyStateChange, setMnemonicForBackup, requestT
                         {entry.error && <p className="text-xs text-red-400">{entry.error}</p>}
                     </div>
                 ) : (
-                    <div className="flex flex-col sm:flex-row items-start gap-2">
-                        <div className="relative w-full">
-                            <textarea value={entry.rawInput} onChange={(e) => updateEntry(index, { rawInput: e.target.value, decryptedMnemonic: e.target.value, isValid: null })} placeholder={`Mnemonic #${index + 1} (12 or 24 words)`} className={`w-full h-28 sm:h-24 p-3 pr-10 bg-slate-50 border-2 rounded-lg text-sm font-mono text-slate-900 placeholder:text-slate-400 ${getBorderColor(entry.isValid)}`} />
-                            {entry.isValid === true && <CheckCircle2 className="absolute top-3 right-3 text-green-500" />}
-                            {entry.isValid === false && <AlertTriangle className="absolute top-3 right-3 text-red-500" />}
-                        </div>
-                        <div className="flex items-center gap-2 shrink-0">
-                            <button onClick={() => handleScan(index)} className="p-3 h-full bg-purple-600/20 text-purple-300 hover:bg-purple-600/50 hover:text-white rounded-md"><QrCode size={20} /></button>
-                            <button onClick={() => handleRemoveEntry(entry.id)} className="p-3 h-full bg-red-600/20 text-red-400 hover:bg-red-600/50 hover:text-white rounded-md"><X size={20} /></button>
+                    <div className="space-y-1">
+                        <div className="flex flex-col sm:flex-row items-start gap-2">
+                            <div className="relative w-full">
+                                <textarea value={entry.rawInput} onChange={(e) => updateEntry(index, { rawInput: e.target.value, decryptedMnemonic: e.target.value, isValid: null, error: null })} placeholder={`Mnemonic #${index + 1} (12 or 24 words)`} className={`w-full h-28 sm:h-24 p-3 pr-10 bg-slate-50 border-2 rounded-lg text-sm font-mono text-slate-900 placeholder:text-slate-400 ${getBorderColor(entry.isValid)}`} />
+                                {entry.isValid === true && <CheckCircle2 className="absolute top-3 right-3 text-green-500" />}
+                                {entry.isValid === false && <AlertTriangle className="absolute top-3 right-3 text-red-500" />}
+                            </div>
+                            <div className="flex items-center gap-2 shrink-0">
+                                <button onClick={() => handleScan(index)} className="p-3 h-full bg-purple-600/20 text-purple-300 hover:bg-purple-600/50 hover:text-white rounded-md"><QrCode size={20} /></button>
+                                <button onClick={() => handleRemoveEntry(entry.id)} className="p-3 h-full bg-red-600/20 text-red-400 hover:bg-red-600/50 hover:text-white rounded-md"><X size={20} /></button>
+                            </div>
                         </div>
+                        {entry.error && <p className="text-xs text-red-400 px-1">{entry.error}</p>}
                     </div>
                 )}
               </div>