diff --git a/backend/static/css/components.css b/backend/static/css/components.css
index ec1a8c3..9a81914 100644
--- a/backend/static/css/components.css
+++ b/backend/static/css/components.css
@@ -239,12 +239,16 @@
 
 .form-control::placeholder { color: var(--c-text-muted); }
 
-/* Kalender-Icon in Datumseingaben: Amber statt Schwarz */
+/* Kalender-Icon in Datumseingaben: Amber statt weiß/schwarz
+   color-scheme: light → Browser rendert schwarzes Icon → Filter tönt es amber */
+input[type="date"],
+input[type="time"] {
+  color-scheme: light;
+}
 input[type="date"]::-webkit-calendar-picker-indicator,
 input[type="time"]::-webkit-calendar-picker-indicator {
   cursor:  pointer;
-  opacity: 0.85;
-  filter:  sepia(0.7) saturate(1.8) hue-rotate(-8deg) brightness(0.9);
+  filter:  sepia(1) saturate(1.8) hue-rotate(-8deg) brightness(0.85);
 }
 
 .form-control:focus {
diff --git a/backend/static/sw.js b/backend/static/sw.js
index 286df93..93b2d87 100644
--- a/backend/static/sw.js
+++ b/backend/static/sw.js
@@ -3,7 +3,7 @@
    Offline-Cache + Push Notifications
    ============================================================ */
 
-const CACHE_VERSION = 'by-v12';
+const CACHE_VERSION = 'by-v13';
 const CACHE_STATIC  = `${CACHE_VERSION}-static`;
 
 // Diese Dateien werden beim Install gecacht (App Shell)