Performed selection validation, and made future dates disabled.

lib/pages/analytics/modules/analytics/widgets/month_picker_widget.dart

@@ -121,6 +121,7 @@ class _MonthPickerWidgetState extends State<MonthPickerWidget> {
   }
 
   Row _buildYearSelector() {
+    final currentYear = DateTime.now().year;
     return Row(
       mainAxisAlignment: MainAxisAlignment.center,
       children: [
@@ -134,17 +135,35 @@ class _MonthPickerWidgetState extends State<MonthPickerWidget> {
         ),
         const Spacer(),
         IconButton(
-          onPressed: () => setState(() => _currentYear = _currentYear - 1),
+          onPressed: () {
+            setState(() {
+              _currentYear = _currentYear - 1;
+            });
+          },
           icon: const Icon(
             Icons.chevron_left,
             color: ColorsManager.grey700,
           ),
         ),
         IconButton(
-          onPressed: () => setState(() => _currentYear = _currentYear + 1),
+          onPressed: _currentYear < currentYear
-          icon: const Icon(
+              ? () {
+                  setState(() {
+                    _currentYear = _currentYear + 1;
+                    // Clear selected month if it becomes invalid in the new year
+                    if (_currentYear == currentYear &&
+                        _selectedMonth != null &&
+                        _selectedMonth! > DateTime.now().month - 1) {
+                      _selectedMonth = null;
+                    }
+                  });
+                }
+              : null,
+          icon: Icon(
             Icons.chevron_right,
-            color: ColorsManager.grey700,
+            color: _currentYear < currentYear
+                ? ColorsManager.grey700
+                : ColorsManager.grey700.withValues(alpha: 0.3),
           ),
         ),
       ],
@@ -152,6 +171,9 @@ class _MonthPickerWidgetState extends State<MonthPickerWidget> {
   }
 
   Widget _buildMonthsGrid() {
+    final currentDate = DateTime.now();
+    final isCurrentYear = _currentYear == currentDate.year;
+
     return GridView.builder(
       shrinkWrap: true,
       itemCount: 12,
@@ -165,14 +187,18 @@ class _MonthPickerWidgetState extends State<MonthPickerWidget> {
       ),
       itemBuilder: (context, index) {
         final isSelected = _selectedMonth == index;
+        final isFutureMonth = isCurrentYear && index > currentDate.month - 1;
+
         return InkWell(
-          onTap: () => setState(() => _selectedMonth = index),
+          onTap: isFutureMonth ? null : () => setState(() => _selectedMonth = index),
           child: Container(
             alignment: Alignment.center,
             decoration: BoxDecoration(
               color: isSelected
                   ? ColorsManager.vividBlue.withValues(alpha: 0.7)
-                  : const Color(0xFFEDF2F7),
+                  : isFutureMonth
+                      ? ColorsManager.grey700.withValues(alpha: 0.1)
+                      : const Color(0xFFEDF2F7),
               borderRadius:
                   isSelected ? BorderRadius.circular(15) : BorderRadius.zero,
             ),
@@ -182,7 +208,9 @@ class _MonthPickerWidgetState extends State<MonthPickerWidget> {
                 fontSize: 12,
                 color: isSelected
                     ? ColorsManager.whiteColors
-                    : ColorsManager.blackColor.withValues(alpha: 0.8),
+                    : isFutureMonth
+                        ? ColorsManager.blackColor.withValues(alpha: 0.3)
+                        : ColorsManager.blackColor.withValues(alpha: 0.8),
                 fontWeight: FontWeight.w500,
               ),
             ),

lib/pages/analytics/modules/analytics/widgets/year_picker_widget.dart

@@ -20,9 +20,9 @@ class _YearPickerWidgetState extends State<YearPickerWidget> {
   late int _currentYear;
 
   static final years = List.generate(
-    DateTime.now().year - 2020 + 1,
+    DateTime.now().year - (DateTime.now().year - 5) + 1,
     (index) => (2020 + index),
-  );
+  ).where((year) => year <= DateTime.now().year).toList();
 
   @override
   void initState() {