added new design for tenders desktop

lib/views/tenders/widgets/main_tenders_slider.dart

@@ -15,6 +15,7 @@ class MainTendersSlider extends StatefulWidget {
     super.key,
     this.isDesktop = false,
   });
+
   final bool isDesktop;
   final List<TenderData> tenders;
 
@@ -24,7 +25,6 @@ class MainTendersSlider extends StatefulWidget {
 
 class _MainTendersSliderState extends State<MainTendersSlider> {
   final PageController pageController = PageController(initialPage: 0);
-
   int currentPage = 1;
 
   void _goToPreviousPage() {
@@ -32,17 +32,22 @@ class _MainTendersSliderState extends State<MainTendersSlider> {
       return;
     }
 
+    final targetIndex = currentPage - 2;
+    if (targetIndex < 0) {
+      return;
+    }
+
     pageController.previousPage(
       duration: const Duration(milliseconds: 300),
       curve: Curves.easeInOutCubic,
     );
+
     setState(() {
       currentPage = currentPage - 1;
     });
 
-    // Fetch feedback and approvals for the previous tender if not already loaded
     final viewModel = context.read<TendersViewModel>();
-    final previousTenderId = widget.tenders[currentPage - 2].id!;
+    final previousTenderId = widget.tenders[targetIndex].id!;
     if (!viewModel.hasFeedbackForTender(previousTenderId)) {
       viewModel.getTenderFeedback(previousTenderId);
     }
@@ -56,17 +61,22 @@ class _MainTendersSliderState extends State<MainTendersSlider> {
       return;
     }
 
+    final targetIndex = currentPage;
+    if (targetIndex >= widget.tenders.length) {
+      return;
+    }
+
     pageController.nextPage(
       duration: const Duration(milliseconds: 300),
       curve: Curves.easeInOutCubic,
     );
+
     setState(() {
       currentPage = currentPage + 1;
     });
 
-    // Fetch feedback and approvals for the next tender if not already loaded
     final viewModel = context.read<TendersViewModel>();
-    final nextTenderId = widget.tenders[currentPage].id!;
+    final nextTenderId = widget.tenders[targetIndex].id!;
     if (!viewModel.hasFeedbackForTender(nextTenderId)) {
       viewModel.getTenderFeedback(nextTenderId);
     }
@@ -83,11 +93,27 @@ class _MainTendersSliderState extends State<MainTendersSlider> {
 
   @override
   Widget build(BuildContext context) {
-    bool isLtr = Directionality.of(context) == TextDirection.ltr;
-    return SingleChildScrollView(
-      child: Stack(
-        children: [_tendersPageView(), _nextPreviousArrows(isLtr: isLtr)],
-      ),
+    final bool isLtr = Directionality.of(context) == TextDirection.ltr;
+
+    return widget.isDesktop ? _tendersListView() : _tendersSlider(isLtr);
+  }
+
+  Widget _tendersListView() {
+    return ListView.separated(
+      padding: EdgeInsets.all(16.0.h()),
+      itemCount: widget.tenders.length,
+      separatorBuilder:
+          (_, __) => SizedBox(height: widget.isDesktop ? 0 : 16.0.h()),
+      itemBuilder: (context, index) {
+        final tender = widget.tenders[index];
+        return TenderCard(tender: tender, isDesktop: widget.isDesktop);
+      },
+    );
+  }
+
+  Widget _tendersSlider(bool isLtr) {
+    return Stack(
+      children: [_tendersPageView(), _nextPreviousArrows(isLtr: isLtr)],
     );
   }
 
@@ -97,25 +123,21 @@ class _MainTendersSliderState extends State<MainTendersSlider> {
       height: 722.0.h(),
       child: PageView.builder(
         controller: pageController,
-        scrollDirection: Axis.horizontal,
         itemCount: widget.tenders.length,
         onPageChanged: (index) {
           setState(() {
             currentPage = index + 1;
           });
 
-          // Fetch feedback and approvals for the new tender if not already loaded
           final viewModel = context.read<TendersViewModel>();
-          if (!viewModel.hasFeedbackForTender(widget.tenders[index].id!)) {
-            viewModel.getTenderFeedback(widget.tenders[index].id!);
+          final id = widget.tenders[index].id!;
+          if (!viewModel.hasFeedbackForTender(id)) {
+            viewModel.getTenderFeedback(id);
           }
-          if (!viewModel.hasTenderApprovalForTender(
-            widget.tenders[index].id!,
-          )) {
-            viewModel.getTenderApprovals(widget.tenders[index].id!);
+          if (!viewModel.hasTenderApprovalForTender(id)) {
+            viewModel.getTenderApprovals(id);
           }
 
-          // Check if we need to load more tenders (when user reaches near the end)
           if (index >= widget.tenders.length - 1 &&
               viewModel.hasMoreData &&
               !viewModel.isLoadingMore) {