Reduce shadow effect for scrollable fade mixin (#28832)

src/dialogs/more-info/ha-more-info-dialog.ts

@@ -766,7 +766,10 @@ export class MoreInfoDialog extends ScrollableFadeMixin(LitElement) {
         }
 
         .content-wrapper.settings-view .fade-bottom {
-          bottom: var(--ha-space-18);
+          bottom: calc(
+            var(--ha-space-14) +
+              max(var(--safe-area-inset-bottom), var(--ha-space-4))
+          );
         }
 
         .child-view {

src/mixins/scrollable-fade-mixin.ts

@@ -50,7 +50,7 @@ export const ScrollableFadeMixin = <T extends Constructor<LitElement>>(
     /**
      * Safe area padding in pixels for the scrollable element.
      */
-    protected scrollFadeSafeAreaPadding = 16;
+    protected scrollFadeSafeAreaPadding = 4;
 
     /**
      * Scroll threshold in pixels for showing the fades.
@@ -73,6 +73,9 @@ export const ScrollableFadeMixin = <T extends Constructor<LitElement>>(
 
     protected firstUpdated(changedProperties: PropertyValues) {
       super.firstUpdated?.(changedProperties);
+      if (this.scrollableElement) {
+        this._updateScrollableState(this.scrollableElement);
+      }
       this._attachScrollableElement();
     }
 
@@ -83,6 +86,8 @@ export const ScrollableFadeMixin = <T extends Constructor<LitElement>>(
 
     disconnectedCallback() {
       this._detachScrollableElement();
+      this._contentScrolled = false;
+      this._contentScrollable = false;
       super.disconnectedCallback();
     }
 
@@ -125,16 +130,16 @@ export const ScrollableFadeMixin = <T extends Constructor<LitElement>>(
             position: absolute;
             left: 0;
             right: 0;
-            height: var(--ha-space-4);
+            height: var(--ha-space-2);
             pointer-events: none;
             transition: opacity 180ms ease-in-out;
-            background: linear-gradient(
-              to bottom,
-              var(--shadow-color),
-              transparent
-            );
             border-radius: var(--ha-border-radius-square);
             opacity: 0;
+            background: linear-gradient(
+              to bottom,
+              var(--ha-color-shadow-scrollable-fade),
+              transparent
+            );
           }
           .fade-top {
             top: 0;

src/resources/theme/color/semantic.globals.ts

@@ -156,6 +156,9 @@ export const semanticColorStyles = css`
     /* Surfaces */
     --ha-color-surface-default: var(--ha-color-neutral-95);
     --ha-color-on-surface-default: var(--ha-color-neutral-05);
+
+    /* Scrollable fade */
+    --ha-color-shadow-scrollable-fade: rgba(0, 0, 0, 0.08);
   }
 `;