implemented correct colors and proper animations in mpin screen.

lib/features/auth/screens/mpin_screen.dart

@@ -1,12 +1,14 @@
 import '../../../l10n/app_localizations.dart';
+import 'dart:math';
 
-import 'dart:developer';
+// import 'dart:developer';
 
 import 'package:flutter/material.dart';
 import 'package:kmobile/app.dart';
 import 'package:kmobile/di/injection.dart';
 import 'package:kmobile/security/secure_storage.dart';
 import 'package:local_auth/local_auth.dart';
+import 'package:flutter/services.dart';
 
 enum MPinMode { enter, set, confirm }
 
@@ -26,22 +28,73 @@ class MPinScreen extends StatefulWidget {
   State<MPinScreen> createState() => _MPinScreenState();
 }
 
-class _MPinScreenState extends State<MPinScreen> {
+class _MPinScreenState extends State<MPinScreen> with TickerProviderStateMixin {
   List<String> mPin = [];
   String? errorText;
 
+  // Animation controllers
+  late final AnimationController _bounceController;
+  late final Animation<double> _bounceAnimation;
+  late final AnimationController _shakeController;
+  late final AnimationController _waveController;
+  late final Animation<double> _waveAnimation;
+
+  // State flags for animations
+  bool _isError = false;
+  bool _isSuccess = false;
+
   @override
   void initState() {
     super.initState();
+    // Bounce animation for single dot entry
+    _bounceController = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 150),
+    );
+    _bounceAnimation = Tween<double>(begin: 1.0, end: 1.2).animate(
+      CurvedAnimation(
+        parent: _bounceController,
+        curve: Curves.elasticIn,
+        reverseCurve: Curves.elasticOut,
+      ),
+    )..addStatusListener((status) {
+        if (status == AnimationStatus.completed) {
+          _bounceController.reverse();
+        }
+      });
+
+    // Shake animation for error
+    _shakeController = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 400),
+    );
+
+    // Wave animation for success
+    _waveController = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 800),
+    );
+    _waveAnimation = Tween<double>(begin: 0, end: 1).animate(
+      CurvedAnimation(parent: _waveController, curve: Curves.easeInOut),
+    );
+
     if (widget.mode == MPinMode.enter) {
       _tryBiometricBeforePin();
     }
   }
 
+  @override
+  void dispose() {
+    _bounceController.dispose();
+    _shakeController.dispose();
+    _waveController.dispose();
+    super.dispose();
+  }
+
   Future<void> _tryBiometricBeforePin() async {
     final storage = getIt<SecureStorage>();
     final enabled = await storage.read('biometric_enabled');
-    log('biometric_enabled: $enabled');
+    // log('biometric_enabled: $enabled');
     if (enabled != null && enabled) {
       final auth = LocalAuthentication();
       if (await auth.canCheckBiometrics) {
@@ -62,11 +115,13 @@ class _MPinScreenState extends State<MPinScreen> {
   }
 
   void addDigit(String digit) {
+    if (_shakeController.isAnimating || _waveController.isAnimating) return;
     if (mPin.length < 4) {
       setState(() {
         mPin.add(digit);
         errorText = null;
       });
+      _bounceController.forward(from: 0);
       if (mPin.length == 4) {
         _handleComplete();
       }
@@ -74,6 +129,7 @@ class _MPinScreenState extends State<MPinScreen> {
   }
 
   void deleteDigit() {
+    if (_shakeController.isAnimating || _waveController.isAnimating) return;
     if (mPin.isNotEmpty) {
       setState(() {
         mPin.removeLast();
@@ -83,19 +139,36 @@ class _MPinScreenState extends State<MPinScreen> {
   }
 
   Future<void> _handleComplete() async {
+    if (_shakeController.isAnimating || _waveController.isAnimating) return;
+
     final pin = mPin.join();
     final storage = SecureStorage();
 
     switch (widget.mode) {
       case MPinMode.enter:
         final storedPin = await storage.read('mpin');
-        log('storedPin: $storedPin');
+        // log('storedPin: $storedPin');
         if (storedPin == int.tryParse(pin)) {
-          widget.onCompleted?.call(pin);
+          // Correct PIN
-        } else {
           setState(() {
+            _isSuccess = true;
+            errorText = null;
+          });
+          await Future.delayed(const Duration(milliseconds: 100));
+          _waveController.forward(from: 0).whenComplete(() {
+            widget.onCompleted?.call(pin);
+          });
+        } else {
+          // Incorrect PIN
+          setState(() {
+            _isError = true;
             errorText = AppLocalizations.of(context).incorrectMPIN;
+          });
+          await _shakeController.forward(from: 0);
+          setState(() {
             mPin.clear();
+            _isError = false;
+            // Keep error text until next digit is entered
           });
         }
         break;
@@ -126,28 +199,81 @@ class _MPinScreenState extends State<MPinScreen> {
           }
         } else {
           setState(() {
+            _isError = true;
             errorText = AppLocalizations.of(context).pinsDoNotMatch;
+          });
+          await _shakeController.forward(from: 0);
+          setState(() {
             mPin.clear();
+            _isError = false;
           });
         }
         break;
     }
   }
 
-  Widget buildMPinDots() {
+  Widget buildMPinDots(BuildContext context) {
-    return Row(
+    return AnimatedBuilder(
+      animation: Listenable.merge(
+          [_bounceController, _shakeController, _waveController]),
+      builder: (context, child) {
+        double shakeOffset = 0;
+        if (_shakeController.isAnimating) {
+          // 4 cycles of sine wave for shake
+          shakeOffset = sin(_shakeController.value * 4 * pi) * 12;
+        }
+
+        return Transform.translate(
+          offset: Offset(shakeOffset, 0),
+          child: Row(
             mainAxisAlignment: MainAxisAlignment.center,
             children: List.generate(4, (index) {
-        return Container(
+              final isFilled = index < mPin.length;
+
+              // Bounce animation for single dot
+              final isAnimatingBounce =
+                  index == mPin.length - 1 && _bounceController.isAnimating;
+              double bounceScale =
+                  isAnimatingBounce ? _bounceAnimation.value : 1.0;
+
+              // Success wave animation
+              double waveScale = 1.0;
+              if (_isSuccess) {
+                final waveDelay = index * 0.15;
+                final waveValue =
+                    (_waveAnimation.value - waveDelay).clamp(0.0, 1.0);
+                // Grow and shrink
+                waveScale = 1.0 + sin(waveValue * pi) * 0.4;
+              }
+
+              // Determine dot color
+              Color dotColor;
+              if (_isError) {
+                dotColor = Theme.of(context).colorScheme.error;
+              } else if (_isSuccess) {
+                dotColor = Colors.green.shade600;
+              } else {
+                dotColor = isFilled
+                    ? Theme.of(context).colorScheme.onSurfaceVariant
+                    : Theme.of(context).colorScheme.surfaceContainerHighest;
+              }
+
+              return Transform.scale(
+                scale: bounceScale * waveScale,
+                child: Container(
                   margin: const EdgeInsets.all(8),
-          width: 15,
+                  width: 25,
-          height: 15,
+                  height: 25,
                   decoration: BoxDecoration(
                     shape: BoxShape.circle,
-            color: index < mPin.length ? Colors.black : Colors.grey[400],
+                    color: dotColor,
+                  ),
                 ),
               );
             }),
+          ),
+        );
+      },
     );
   }
 
@@ -165,9 +291,10 @@ class _MPinScreenState extends State<MPinScreen> {
           mainAxisAlignment: MainAxisAlignment.spaceEvenly,
           children: row.map((key) {
             return Padding(
-              padding: const EdgeInsets.all(8.0),
+              padding: const EdgeInsets.all(1.0),
               child: GestureDetector(
                 onTap: () {
+                  HapticFeedback.lightImpact();
                   if (key == '<') {
                     deleteDigit();
                   } else if (key == 'Enter') {
@@ -185,11 +312,10 @@ class _MPinScreenState extends State<MPinScreen> {
                   }
                 },
                 child: Container(
-                  width: 70,
+                  width: 80,
-                  height: 70,
+                  height: 80,
                   decoration: BoxDecoration(
                     shape: BoxShape.circle,
-                    color: Colors.grey[200],
                   ),
                   alignment: Alignment.center,
                   child: key == 'Enter'
@@ -197,10 +323,10 @@ class _MPinScreenState extends State<MPinScreen> {
                       : Text(
                           key == '<' ? '⌫' : key,
                           style: TextStyle(
-                            fontSize: 20,
+                            fontSize: 30,
                             color: key == 'Enter'
                                 ? Theme.of(context).primaryColor
-                                : Colors.black,
+                                : Theme.of(context).colorScheme.onSurface,
                           ),
                         ),
                 ),
@@ -229,7 +355,7 @@ class _MPinScreenState extends State<MPinScreen> {
       body: SafeArea(
         child: Column(
           children: [
-            const Spacer(),
+            const SizedBox(height: 50),
             // Logo
             Image.asset('assets/images/logo.png', height: 100),
             const SizedBox(height: 20),
@@ -237,19 +363,18 @@ class _MPinScreenState extends State<MPinScreen> {
               getTitle(),
               style: const TextStyle(fontSize: 20, fontWeight: FontWeight.w500),
             ),
-            const SizedBox(height: 20),
+            const Spacer(),
-            buildMPinDots(),
+            buildMPinDots(context),
             if (errorText != null)
               Padding(
                 padding: const EdgeInsets.only(top: 8.0),
                 child: Text(
                   errorText!,
-                  style: const TextStyle(color: Colors.red),
+                  style: TextStyle(color: Theme.of(context).colorScheme.error),
                 ),
               ),
             const Spacer(),
             buildNumberPad(),
-            const Spacer(),
           ],
         ),
       ),