update loaing

lib/core/widgets/custom_button.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 
 import 'package:worker/core/theme/colors.dart';
+import 'package:worker/core/widgets/loading_indicator.dart';
 
 /// Button variant types for different use cases.
 enum ButtonVariant {
@@ -106,14 +107,7 @@ class CustomButton extends StatelessWidget {
   /// Builds the button content (text, icon, or loading indicator)
   Widget _buildContent() {
     if (isLoading) {
-      return const SizedBox(
-        width: 20,
-        height: 20,
-        child: CircularProgressIndicator(
-          strokeWidth: 2,
-          valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
-        ),
-      );
+      return const CustomLoadingIndicator(size: 20, color: Colors.white);
     }
 
     if (icon != null) {

lib/core/widgets/loading_indicator.dart

@@ -1,10 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:loading_animation_widget/loading_animation_widget.dart';
 
 import 'package:worker/core/theme/colors.dart';
 
 /// Custom loading indicator widget with optional message text.
 ///
-/// Displays a centered circular progress indicator with an optional
+/// Displays a centered three rotating dots animation with an optional
 /// message below it. Used for loading states throughout the app.
 ///
 /// Example usage:
@@ -32,19 +33,14 @@ class CustomLoadingIndicator extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
     return Center(
       child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
-          SizedBox(
-            width: size,
-            height: size,
-            child: CircularProgressIndicator(
-              strokeWidth: 3,
-              valueColor: AlwaysStoppedAnimation<Color>(
-                color ?? AppColors.primaryBlue,
-              ),
-            ),
+          LoadingAnimationWidget.threeRotatingDots(
+            color: color ?? colorScheme.primary,
+            size: size,
           ),
           if (message != null) ...[
             const SizedBox(height: 16),