diff --git a/adventskalender/shared/js/door-open.js b/adventskalender/shared/js/door-open.js
index acc047b..9a2e11a 100644
--- a/adventskalender/shared/js/door-open.js
+++ b/adventskalender/shared/js/door-open.js
@@ -7,6 +7,12 @@ document.querySelectorAll(".door, .fluegel, .openfield").forEach(elem => {
     const day = elem.dataset.day;
     if (!day) return;
 
+    // 🔒 Tages-Sperre prüfen
+    if (typeof isDoorUnlocked === "function" && !isDoorUnlocked(day)) {
+      console.log(`Türchen ${day} ist noch gesperrt.`);
+      return;
+    }
+
     const openfield = document.querySelector(`.openfield[data-day="${day}"]`);
     const door      = document.querySelector(`.door[data-day="${day}"]`);
     const flLeft    = document.querySelector(`.fluegel.left[data-day="${day}"]`);