登录流程已全部重构

lib/widgets/shared/app_backend.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+
+class AppBackend extends StatelessWidget {
+  final Widget child;
+
+  const AppBackend({super.key, required this.child});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: double.infinity,
+      padding: EdgeInsets.all(15),
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            Color(0xffdff8fb),
+            Color(0xffffffff),
+            Color(0xffdff8fb),
+          ],
+        ),
+      ),
+      child: SafeArea(child: child),
+    );
+  }
+}