M3 Overhaul

lib/widgets/tasq_adaptive_list.dart

@@ -597,7 +597,7 @@ class _DesktopTableViewState<T> extends State<_DesktopTableView<T>> {
   }
 }
 
-/// Mobile tile wrapper that applies Material 2 style elevation.
+/// Mobile tile wrapper that applies M3 Expressive tonal elevation.
 class _MobileTile<T> extends StatelessWidget {
   const _MobileTile({
     required this.item,
@@ -615,21 +615,14 @@ class _MobileTile<T> extends StatelessWidget {
   Widget build(BuildContext context) {
     final tile = mobileTileBuilder(context, item, actions);
 
-    // Apply Material 2 style elevation for Cards (per Hybrid M3/M2 guidelines).
-    // Mobile tiles deliberately use a slightly smaller corner radius for
-    // compactness, but they should inherit the global card elevation and
-    // shadow color from the theme to maintain visual consistency.
+    // M3 Expressive: cards use tonal surface tints. The theme's CardThemeData
+    // already specifies surfaceTintColor and low elevation. We apply the
+    // compact shape for list density.
     if (tile is Card) {
-      final themeCard = Theme.of(context).cardTheme;
       return Card(
         color: tile.color,
-        elevation: themeCard.elevation ?? 3,
         margin: tile.margin,
-        // prefer the tile's explicit shape. For mobile tiles we intentionally
-        // use the compact radius token so list items feel denser while
-        // remaining theme-driven.
         shape: tile.shape ?? AppSurfaces.of(context).compactShape,
-        shadowColor: AppSurfaces.of(context).compactShadowColor,
         clipBehavior: tile.clipBehavior,
         child: tile.child,
       );