diff --git a/js/filter.js b/js/filter.js
index f5835e8..93257c6 100644
--- a/js/filter.js
+++ b/js/filter.js
@@ -1,4 +1,3 @@
-
 function initFilter() {
     const filterSelect = document.getElementById('category-filter');
     const listContainer = document.querySelector('.s-res-list');
@@ -6,22 +5,29 @@ function initFilter() {
     if (!filterSelect || !listContainer) return;
 
     filterSelect.addEventListener('change', function() {
-        const selectedCategory = this.value.toLowerCase();
+        const selectedCategory = this.value.toLowerCase().trim();
         const cards = listContainer.querySelectorAll('.s-res-item');
 
+        console.log("--- FILTER GESTARTET ---");
+        console.log("Ausgewählt im Dropdown (kleingeschrieben): '" + selectedCategory + "'");
+
         cards.forEach(card => {
-            const cardCategory = card.getAttribute('data-category') || '';
+            const cardCategory = (card.getAttribute('data-category') || '').toLowerCase().trim();
+            const articleTitle = card.querySelector('.s-res-link')?.textContent.trim() || 'Unbekannt';
+
+            console.log(`Prüfe Artikel "${articleTitle}": Karte hat '${cardCategory}' vs Dropdown '${selectedCategory}'`);
 
             if (selectedCategory === 'all' || cardCategory === selectedCategory) {
-                card.style.display = 'flex';
+                card.style.style.display = 'flex';
+                console.log("-> TREFFER (wird angezeigt)");
             } else {
                 card.style.display = 'none';
+                console.log("-> KEIN TREFFER (wird ausgeblendet)");
             }
         });
     });
 }
 
-// ist das DOM bereits vollständig aufgebaut?
 if (document.readyState === 'loading') {
     document.addEventListener('DOMContentLoaded', initFilter);
 } else {