fix: resolve CSS load-order conflicts between glass.css and module stylesheets

- dashboard.css: move .widget glass styles (shadow, border, ::before highlight)
  directly here since module CSS loads after glass.css and would override it
- tasks.css: move .filter-chip--active glass state and fix .priority-badge
  border-radius to use --radius-glass-chip (capsule) instead of --radius-xs
- glass.css: remove dead .sticky-header rule (class not used in HTML) and
  remove duplicate .widget rules now handled by dashboard.css

public/styles/dashboard.css

@@ -152,10 +152,25 @@
 .widget {
   background-color: var(--color-surface);
   border-radius: var(--radius-md);
-  box-shadow: var(--shadow-sm);
+  box-shadow: var(--glass-shadow-sm);
+  border: 1px solid var(--glass-border-subtle);
   overflow: hidden;
   display: flex;
   flex-direction: column;
+  position: relative;
+}
+
+.widget::before {
+  content: '';
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  height: 1px;
+  background: var(--glass-highlight-subtle);
+  border-radius: var(--radius-md) var(--radius-md) 0 0;
+  pointer-events: none;
+  z-index: 1;
 }
 
 .widget__header {

public/styles/glass.css

@@ -248,22 +248,6 @@ textarea.form-input {
     inset 0 1px 2px rgba(0, 0, 0, 0.04);
 }
 
-/* ================================================================
- * 9. Sticky Header — Glass-Token-Upgrade
- *
- * Bestehender backdrop-filter (blur(12px)) in layout.css wird auf
- * --glass-* Tokens umgestellt. Hintergrund transparenter machen
- * damit der Blur-Effekt besser sichtbar ist.
- * ================================================================ */
-@supports (backdrop-filter: blur(1px)) {
-  .sticky-header {
-    background-color: color-mix(in srgb, var(--color-bg) 80%, transparent);
-    backdrop-filter: var(--blur-sm) saturate(160%);
-    -webkit-backdrop-filter: var(--blur-sm) saturate(160%);
-    border-bottom: 1px solid var(--glass-border-subtle);
-  }
-}
-
 /* ================================================================
  * 10. Toasts — Glass + Capsule
  *
@@ -357,32 +341,10 @@ textarea.form-input {
 /* ================================================================
  * 14. Dashboard-Widgets — Glass Cards
  *
- * .widget bekommt eine leichte Glass-Behandlung:
+ * Glass-Styles (border, shadow, ::before highlight) direkt in
- * Stärkere Border, subtiles Highlight oben.
+ * dashboard.css, da dieses Modul-CSS nach glass.css geladen wird
- * Kein backdrop-filter (Widgets sind über normalem Seitenhintergrund,
+ * und sonst den box-shadow überschreiben würde.
- * kein dramatischer Tiefeneffekt nötig).
  * ================================================================ */
-.widget {
-  border: 1px solid var(--glass-border-subtle);
-  box-shadow: var(--glass-shadow-sm);
-}
-
-.widget::before {
-  content: '';
-  position: absolute;
-  top: 0;
-  left: 0;
-  right: 0;
-  height: 1px;
-  background: var(--glass-highlight-subtle);
-  border-radius: var(--radius-md) var(--radius-md) 0 0;
-  pointer-events: none;
-}
-
-/* Relative-Positionierung für ::before */
-.widget {
-  position: relative;
-}
 
 /* ================================================================
  * 15. FAB-Backdrop (Dashboard) — Glass Blur

public/styles/tasks.css

@@ -127,6 +127,16 @@
   color: var(--color-accent);
 }
 
+@supports (backdrop-filter: blur(1px)) {
+  .filter-chip--active {
+    background: color-mix(in srgb, var(--color-accent) 18%, transparent);
+    backdrop-filter: var(--blur-xs);
+    -webkit-backdrop-filter: var(--blur-xs);
+    border-color: color-mix(in srgb, var(--color-accent) 50%, transparent);
+    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.20);
+  }
+}
+
 .filter-chip__remove {
   width: 16px;
   height: 16px;
@@ -303,7 +313,8 @@
   font-size: var(--text-xs);
   font-weight: var(--font-weight-semibold);
   padding: 2px var(--space-2);
-  border-radius: var(--radius-xs);
+  border-radius: var(--radius-glass-chip);
+  border: 1px solid color-mix(in srgb, currentColor 25%, transparent);
 }
 
 .priority-badge--low     { color: var(--color-priority-low);    background-color: var(--color-priority-low-bg); }