changed primary color usage to fix the color bug in dark mode

Changed Theme.of(context).primaryColor to Theme.of(contex).colorScheme.primary to make dark mode work properly.

lib/features/dashboard/screens/dashboard_screen.dart

@@ -98,7 +98,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
   Widget _buildBalanceShimmer() {
     final theme = Theme.of(context);
     return Shimmer.fromColors(
-      baseColor: theme.primaryColor,
+      baseColor: theme.colorScheme.primary,
       highlightColor: theme.colorScheme.onPrimary,
       child: Container(
           width: 200, height: 42, color: theme.scaffoldBackgroundColor),
@@ -213,7 +213,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
           title: Text(
             AppLocalizations.of(context).kconnect,
             style: TextStyle(
-              color: theme.primaryColor,
+              color: theme.colorScheme.primary,
               fontWeight: FontWeight.w700,
             ),
           ),
@@ -275,7 +275,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
                           "${AppLocalizations.of(context).hi} $firstName!",
                           style: GoogleFonts.baumans().copyWith(
                             fontSize: 20,
-                            color: theme.primaryColor,
+                            color: theme.colorScheme.primary,
                             fontWeight: FontWeight.w700,
                           ),
                         ),
@@ -289,7 +289,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
                           vertical: 10,
                         ),
                         decoration: BoxDecoration(
-                          color: theme.primaryColor,
+                          color: theme.colorScheme.primary,
                           borderRadius: BorderRadius.circular(16),
                         ),
                         child: Column(
@@ -307,7 +307,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
                                 ),
                                 DropdownButton<int>(
                                   value: selectedAccountIndex,
-                                  dropdownColor: theme.primaryColor,
+                                  dropdownColor: theme.colorScheme.primary,
                                   underline: const SizedBox(),
                                   icon: const Icon(Icons.keyboard_arrow_down),
                                   iconEnabledColor: theme.colorScheme.onPrimary,
@@ -602,7 +602,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
                               AppLocalizations.of(context).noTransactions,
                               style: TextStyle(
                                 fontSize: 16,
-                                color: Colors.grey[600],
+                                color: Theme.of(context).colorScheme.outline,
                               ),
                             ),
                           ),
@@ -663,8 +663,8 @@ class _DashboardScreenState extends State<DashboardScreen> {
             icon,
             size: 30,
             color: disable
-                ? theme.colorScheme.surfaceContainerHighest
-                : theme.primaryColor,
+                ? theme.colorScheme.onSurface.withValues(alpha: 0.3)
+                : theme.colorScheme.primary,
             grade: 200,
             weight: 700,
           ),

lib/features/dashboard/widgets/account_card.dart

@@ -13,7 +13,7 @@ class AccountCard extends StatelessWidget {
       width: 300,
       padding: const EdgeInsets.all(20),
       decoration: BoxDecoration(
-        color: Theme.of(context).colorScheme.onPrimary,
+        color: Colors.white,
         borderRadius: BorderRadius.circular(12),
         boxShadow: [
           BoxShadow(
@@ -33,7 +33,7 @@ class AccountCard extends StatelessWidget {
               Text(
                 account.accountType,
                 style: TextStyle(
-                  color: Theme.of(context).scaffoldBackgroundColor,
+                  color: Theme.of(context).colorScheme.onPrimary,
                   fontSize: 18,
                   fontWeight: FontWeight.bold,
                 ),
@@ -42,7 +42,7 @@ class AccountCard extends StatelessWidget {
                 account.accountType == 'Savings'
                     ? Icons.savings
                     : Icons.account_balance,
-                color: Theme.of(context).scaffoldBackgroundColor,
+                color: Theme.of(context).colorScheme.onPrimary,
               ),
             ],
           ),
@@ -50,13 +50,13 @@ class AccountCard extends StatelessWidget {
           Text(
             account.accountNumber,
             style: TextStyle(
-                color: Theme.of(context).scaffoldBackgroundColor, fontSize: 16),
+                color: Theme.of(context).colorScheme.onPrimary, fontSize: 16),
           ),
           const SizedBox(height: 30),
           Text(
             '${account.currency} ${account.balance.toStringAsFixed(2)}',
             style: TextStyle(
-              color: Theme.of(context).scaffoldBackgroundColor,
+              color: Theme.of(context).colorScheme.onPrimary,
               fontSize: 22,
               fontWeight: FontWeight.bold,
             ),
@@ -65,10 +65,11 @@ class AccountCard extends StatelessWidget {
           Text(
             AppLocalizations.of(context).availableBalance,
             style: TextStyle(
-                color: Theme.of(context).scaffoldBackgroundColor, fontSize: 16),
+                color: Theme.of(context).colorScheme.onPrimary, fontSize: 16),
           ),
         ],
       ),
     );
   }
 }
+