fix

lib/features/auth/presentation/widgets/auth_button.dart

@@ -0,0 +1,58 @@
+import 'package:flutter/material.dart';
+
+/// Custom elevated button for authentication actions
+class AuthButton extends StatelessWidget {
+  const AuthButton({
+    super.key,
+    required this.onPressed,
+    required this.text,
+    this.isLoading = false,
+    this.enabled = true,
+  });
+
+  final VoidCallback? onPressed;
+  final String text;
+  final bool isLoading;
+  final bool enabled;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return SizedBox(
+      width: double.infinity,
+      height: 50,
+      child: ElevatedButton(
+        onPressed: (enabled && !isLoading) ? onPressed : null,
+        style: ElevatedButton.styleFrom(
+          backgroundColor: theme.colorScheme.primary,
+          foregroundColor: theme.colorScheme.onPrimary,
+          disabledBackgroundColor:
+              theme.colorScheme.onSurface.withOpacity(0.12),
+          disabledForegroundColor:
+              theme.colorScheme.onSurface.withOpacity(0.38),
+          elevation: 2,
+          shadowColor: theme.colorScheme.primary.withOpacity(0.3),
+        ),
+        child: isLoading
+            ? SizedBox(
+                height: 20,
+                width: 20,
+                child: CircularProgressIndicator(
+                  strokeWidth: 2,
+                  valueColor: AlwaysStoppedAnimation<Color>(
+                    theme.colorScheme.onPrimary,
+                  ),
+                ),
+              )
+            : Text(
+                text,
+                style: theme.textTheme.titleMedium?.copyWith(
+                  fontWeight: FontWeight.bold,
+                  color: theme.colorScheme.onPrimary,
+                ),
+              ),
+      ),
+    );
+  }
+}