diff --git a/app/router.php b/app/router.php
index 9f75dc9..d5345b2 100644
--- a/app/router.php
+++ b/app/router.php
@@ -139,15 +139,19 @@ switch ($parsedPath['type']) {
             // Use slug if available
             $urlSlug = ($metadata && isset($metadata['slug'])) ? $metadata['slug'] : $item;
 
-            $baseUrl = '/' . trim($ctx->requestPath, '/') . '/' . urlencode($urlSlug);
+            $langPrefix = $ctx->get('langPrefix', '');
+            $baseUrl = $langPrefix . '/' . trim($ctx->requestPath, '/') . '/' . urlencode($urlSlug);
+            
+            // Assets (cover, PDF) must use actual folder name, not translated slug
+            $assetUrl = $langPrefix . '/' . trim($ctx->requestPath, '/') . '/' . urlencode($item);
 
             return [
                 'title' => $title,
                 'url' => $baseUrl . '/',
                 'date' => $date,
                 'summary' => $metadata['summary'] ?? null,
-                'cover' => $coverImage ? "$baseUrl/$coverImage" : null,
-                'pdf' => $pdfFile ? "$baseUrl/$pdfFile" : null,
+                'cover' => $coverImage ? "$assetUrl/$coverImage" : null,
+                'pdf' => $pdfFile ? "$assetUrl/$pdfFile" : null,
                 'redirect' => $metadata['redirect'] ?? null
             ];
         }, $subdirs));