M3 Overhaul

lib/screens/tickets/ticket_detail_screen.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import '../../theme/m3_motion.dart';
 import 'package:tasq/utils/app_time.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
@@ -858,7 +859,7 @@ class _TicketDetailScreenState extends ConsumerState<TicketDetailScreen> {
   }
 
   Future<void> _showTimelineDialog(BuildContext context, Ticket ticket) async {
-    await showDialog<void>(
+    await m3ShowDialog<void>(
       context: context,
       builder: (dialogContext) {
         return AlertDialog(
@@ -897,7 +898,7 @@ class _TicketDetailScreenState extends ConsumerState<TicketDetailScreen> {
     final descCtrl = TextEditingController(text: ticket.description);
     String? selectedOffice = ticket.officeId;
 
-    await showDialog<void>(
+    await m3ShowDialog<void>(
       context: context,
       builder: (dialogContext) {
         var saving = false;
@@ -967,7 +968,7 @@ class _TicketDetailScreenState extends ConsumerState<TicketDetailScreen> {
                       : () => Navigator.of(dialogContext).pop(),
                   child: const Text('Cancel'),
                 ),
-                ElevatedButton(
+                FilledButton(
                   onPressed: saving
                       ? null
                       : () async {

lib/screens/tickets/tickets_list_screen.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import '../../theme/m3_motion.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:tasq/utils/app_time.dart';
 import 'package:go_router/go_router.dart';
@@ -341,7 +342,7 @@ class _TicketsListScreenState extends ConsumerState<TicketsListScreen> {
           right: 16,
           bottom: 16,
           child: SafeArea(
-            child: FloatingActionButton.extended(
+            child: M3ExpandedFab(
               onPressed: () => _showCreateTicketDialog(context, ref),
               icon: const Icon(Icons.add),
               label: const Text('New Ticket'),
@@ -361,7 +362,7 @@ class _TicketsListScreenState extends ConsumerState<TicketsListScreen> {
     final descriptionController = TextEditingController();
     Office? selectedOffice;
 
-    await showDialog<void>(
+    await m3ShowDialog<void>(
       context: context,
       builder: (dialogContext) {
         bool saving = false;
@@ -644,8 +645,11 @@ class _StatusSummaryCard extends StatelessWidget {
       _ => scheme.onSurfaceVariant,
     };
 
+    // M3 Expressive: filled card with semantic tonal color, no shadow.
     return Card(
       color: background,
+      elevation: 0,
+      shadowColor: Colors.transparent,
       // summary cards are compact — use compact token for consistent density
       shape: AppSurfaces.of(context).compactShape,
       child: Padding(