Desktop: W3-Overlays als zentrierte Dialogs (FAB + All-Chips)

@media 768px:
- .w3-sheet-overlay: justify-content/align-items:center statt flex-end
- .w3-sheet-panel: border-radius:20px, max-width:480px, padding:24px
- .w3-sheet-panel--scroll: max-width:680px (all-chips breiter)
- all-chips Grid: auto-fill minmax(100px) statt repeat(4,1fr)
components.css ?v=1009, SW by-v1012, APP_VER 1012

backend/static/css/components.css

@@ -8649,6 +8649,34 @@ svg.empty-state-icon {
   font-weight: 600;
 }
 
+/* ----------------------------------------------------------
+   W3-Overlays Desktop: zentrierte Dialogs statt Bottom-Sheets
+   ---------------------------------------------------------- */
+@media (min-width: 768px) {
+  .w3-sheet-overlay {
+    justify-content: center;
+    align-items: center;
+  }
+  .w3-backdrop {
+    backdrop-filter: blur(4px);
+  }
+  .w3-sheet-panel {
+    border-radius: 20px;
+    width: 90%;
+    max-width: 480px;
+    padding: 24px;
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
+  }
+  .w3-sheet-panel--scroll {
+    max-width: 680px;
+    max-height: 80vh;
+  }
+  /* all-chips Grid auf Desktop: auto-fill statt repeat(4,1fr) */
+  .w3-sheet-panel--scroll [style*="grid-template-columns:repeat(4,1fr)"] {
+    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)) !important;
+  }
+}
+
 /* ----------------------------------------------------------
    Settings / Dog-Profile: Card-Sektion-Header
    (uppercase Label mit Border-Bottom)