update

lib/features/dashboard/provider.dart

@@ -42,6 +42,12 @@ class TransactionsNotifier extends StateNotifier<List<Transaction>> {
     state = [...state, transaction];
     _storage.addTransaction(transaction);
   }
+
+  void clearAll() {
+    state = [];
+    // also clear from SharedPreferences:
+    SharedPreferences.getInstance().then((prefs) => prefs.remove('transactions'));
+  }
 }
 
 // Search and filter state

lib/features/dashboard/screen.dart

@@ -10,22 +10,22 @@ import '../settings/provider.dart';
 import 'provider.dart';
 
 // Helper for balance card only - hides .00 decimals
-String _formatBalanceAmount(String symbol, double amount, AmountFormat fmt) {
+String _smartBalance(double amount, AmountFormat fmt, String symbol) {
   const spaceAfter = {'Br', '₽'};
   final sep = spaceAfter.contains(symbol) ? ' ' : '';
+  final isWhole = amount == amount.floorToDouble();
   
-  // Check if decimal part is zero
-  final hasDecimals = (amount - amount.truncate()) != 0;
-  
-  if (!hasDecimals) {
-    // Format integer part only using the selected format style
-    final intAmount = amount.truncate().toDouble();
-    // Use fmt.format but strip the .00
-    final full = fmt.format(intAmount);
-    final withoutDecimals = full.endsWith('.00') ? full.substring(0, full.length - 3) : full;
-    return '$symbol$sep$withoutDecimals';
+  String formatted;
+  if (isWhole) {
+    // format the integer, then manually remove .00
+    formatted = fmt.format(amount);
+    if (formatted.endsWith('.00')) {
+      formatted = formatted.substring(0, formatted.length - 3);
     }
-  return formatAmount(symbol, amount, fmt);  // existing helper
+  } else {
+    formatted = fmt.format(amount);
+  }
+  return '$symbol$sep$formatted';
 }
 
 class DashboardScreen extends ConsumerStatefulWidget {
@@ -407,7 +407,7 @@ class _BalanceCard extends ConsumerWidget {
                       fit: BoxFit.scaleDown,
                       alignment: Alignment.centerLeft,
                       child: Text(
-                        _formatBalanceAmount(currencyInfo.symbol, balance, fmt),
+                        _smartBalance(balance, fmt, currencyInfo.symbol),
                         style: TextStyle(
                           fontSize: 36, // max font size
                           fontWeight: FontWeight.w700,
@@ -444,7 +444,7 @@ class _BalanceCard extends ConsumerWidget {
                               fit: BoxFit.scaleDown,
                               alignment: Alignment.centerLeft,
                               child: Text(
-                                _formatBalanceAmount(c.$2, converted, fmt),
+                                _smartBalance(converted, fmt, c.$2),
                                 style: TextStyle(
                                   fontSize: 13,
                                   fontWeight: FontWeight.w500,

lib/features/settings/screen.dart

@@ -6,6 +6,7 @@ import 'package:intl/intl.dart';
 import '../../core/constants.dart';
 import '../../shared/utils/currency_utils.dart';
 import '../../shared/providers/amount_format_provider.dart';
+import '../dashboard/provider.dart';
 import 'provider.dart';
 
 class SettingsScreen extends ConsumerStatefulWidget {
@@ -50,6 +51,55 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
     setState(() => _isEditing = false);
   }
 
+  void _confirmClearData(BuildContext context, WidgetRef ref) {
+    // First confirmation
+    showDialog(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('Clear all transactions?'),
+        content: const Text('This will permanently delete all your transaction history. This cannot be undone.'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx),
+            child: const Text('Cancel'),
+          ),
+          TextButton(
+            onPressed: () {
+              Navigator.pop(ctx);
+              // Second confirmation
+              showDialog(
+                context: context,
+                builder: (ctx2) => AlertDialog(
+                  title: const Text('Are you absolutely sure?'),
+                  content: const Text('All transactions will be deleted forever. There is no way to recover them.'),
+                  actions: [
+                    TextButton(
+                      onPressed: () => Navigator.pop(ctx2),
+                      child: const Text('No, keep them'),
+                    ),
+                    TextButton(
+                      onPressed: () {
+                        ref.read(transactionsProvider.notifier).clearAll();
+                        Navigator.pop(ctx2);
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          const SnackBar(content: Text('All transactions deleted')),
+                        );
+                      },
+                      style: TextButton.styleFrom(foregroundColor: const Color(0xFFE05C6B)),
+                      child: const Text('Yes, delete everything'),
+                    ),
+                  ],
+                ),
+              );
+            },
+            style: TextButton.styleFrom(foregroundColor: const Color(0xFFE05C6B)),
+            child: const Text('Delete'),
+          ),
+        ],
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final budget = ref.watch(budgetProvider);
@@ -434,6 +484,36 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
                 ],
               ),
             ),
+            const SizedBox(height: 24),
+
+            // Danger Zone
+            Text(
+              'Danger Zone',
+              style: TextStyle(
+                fontSize: 12,
+                letterSpacing: 1.2,
+                color: const Color(0xFFE05C6B).withOpacity(0.8),
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            SizedBox(
+              width: double.infinity,
+              child: OutlinedButton.icon(
+                onPressed: () => _confirmClearData(context, ref),
+                icon: const Icon(Icons.delete_forever, color: Color(0xFFE05C6B)),
+                label: const Text(
+                  'Clear All Transactions',
+                  style: TextStyle(color: Color(0xFFE05C6B)),
+                ),
+                style: OutlinedButton.styleFrom(
+                  side: BorderSide(color: const Color(0xFFE05C6B).withOpacity(0.5)),
+                  padding: const EdgeInsets.symmetric(vertical: 14),
+                  shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                ),
+              ),
+            ),
+            const SizedBox(height: 32),
           ],
         ),
       ),