Add privacy mode toggle to blur sensitive financial amounts

Eye/EyeOff icon next to theme toggle. Persists in localStorage.
Applies CSS blur to all elements marked with data-sensitive attribute
across Dashboard, Budget, Pensions, Salarios, and Transactions pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/App.tsx

@@ -1,6 +1,7 @@
 import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom';
 import { AuthProvider, useAuth } from './AuthContext';
 import { ThemeProvider } from './ThemeContext';
+import { PrivacyProvider } from './PrivacyContext';
 import Layout from './components/Layout';
 import Login from './pages/Login';
 import Dashboard from './pages/Dashboard';
@@ -47,9 +48,11 @@ export default function App() {
   return (
     <BrowserRouter>
       <ThemeProvider>
+        <PrivacyProvider>
           <AuthProvider>
             <AppRoutes />
           </AuthProvider>
+        </PrivacyProvider>
       </ThemeProvider>
     </BrowserRouter>
   );

frontend/src/PrivacyContext.tsx

@@ -0,0 +1,27 @@
+import { createContext, useContext, useEffect, useState } from 'react';
+
+const PrivacyContext = createContext<{
+  privacyMode: boolean;
+  togglePrivacy: () => void;
+}>({ privacyMode: false, togglePrivacy: () => {} });
+
+export function PrivacyProvider({ children }: { children: React.ReactNode }) {
+  const [privacyMode, setPrivacyMode] = useState<boolean>(() => {
+    return localStorage.getItem('privacyMode') === 'true';
+  });
+
+  useEffect(() => {
+    document.documentElement.classList.toggle('privacy', privacyMode);
+    localStorage.setItem('privacyMode', String(privacyMode));
+  }, [privacyMode]);
+
+  const togglePrivacy = () => setPrivacyMode((p) => !p);
+
+  return (
+    <PrivacyContext.Provider value={{ privacyMode, togglePrivacy }}>
+      {children}
+    </PrivacyContext.Provider>
+  );
+}
+
+export const usePrivacy = () => useContext(PrivacyContext);

frontend/src/components/DashboardSection.tsx

@@ -58,7 +58,7 @@ export default function DashboardSection({
                 {settings.label}
               </span>
               {total != null && totalCurrency && (
-                <span className="text-sm font-bold font-mono text-foreground">
+                <span data-sensitive className="text-sm font-bold font-mono text-foreground">
                   {formatAmount(total, totalCurrency)}
                 </span>
               )}

frontend/src/components/Layout.tsx

@@ -10,10 +10,13 @@ import {
   Menu,
   Sun,
   Moon,
+  Eye,
+  EyeOff,
 } from 'lucide-react';
 import { useEffect, useState } from 'react';
 import { useAuth } from '../AuthContext';
 import { useTheme } from '../ThemeContext';
+import { usePrivacy } from '../PrivacyContext';
 import { subscribeToPush } from '../pushNotifications';
 import { Button } from '@/components/ui/button';
 import {
@@ -37,6 +40,7 @@ const navItems = [
 export default function Layout() {
   const { logout } = useAuth();
   const { theme, toggleTheme } = useTheme();
+  const { privacyMode, togglePrivacy } = usePrivacy();
   const navigate = useNavigate();
   const [mobileOpen, setMobileOpen] = useState(false);
 
@@ -86,6 +90,9 @@ export default function Layout() {
           </nav>
 
           <div className="flex items-center gap-1">
+            <Button variant="ghost" size="icon" onClick={togglePrivacy} title="Toggle privacy mode" aria-label="Toggle privacy mode">
+              {privacyMode ? <EyeOff className="w-4 h-4" /> : <Eye className="w-4 h-4" />}
+            </Button>
             <Button variant="ghost" size="icon" onClick={toggleTheme} title="Toggle theme" aria-label="Toggle theme">
               {theme === 'dark' ? <Sun className="w-4 h-4" /> : <Moon className="w-4 h-4" />}
             </Button>

frontend/src/components/TransactionList.tsx

@@ -128,6 +128,7 @@ export default function TransactionList({
                   </p>
                 </div>
                 <span
+                  data-sensitive
                   className={cn(
                     'font-mono text-sm font-medium shrink-0',
                     tx.transaction_type === 'DEVOLUCION' && 'text-primary'

frontend/src/components/budget/MonthlyDetail.tsx

@@ -62,7 +62,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
             {detail.income_items.map((item) => (
               <div key={item.id} className="flex items-center justify-between text-sm">
                 <span className="truncate mr-2">{item.name}</span>
-                <span className="font-mono text-primary whitespace-nowrap">
+                <span data-sensitive className="font-mono text-primary whitespace-nowrap">
                   {formatAmount(item.amount, 'CRC')}
                 </span>
               </div>
@@ -70,7 +70,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
             <Separator />
             <div className="flex items-center justify-between font-semibold text-sm">
               <span>Total</span>
-              <span className="font-mono text-primary">
+              <span data-sensitive className="font-mono text-primary">
                 {formatAmount(detail.total_projected_income, 'CRC')}
               </span>
             </div>
@@ -96,7 +96,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
                     </Badge>
                   )}
                 </div>
-                <div className="text-right whitespace-nowrap">
+                <div data-sensitive className="text-right whitespace-nowrap">
                   <span className="font-mono">{formatAmount(item.amount, 'CRC')}</span>
                   {item.used_actual && item.projected_amount != null && (
                     <span className="block text-[10px] text-muted-foreground font-mono line-through">
@@ -112,7 +112,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
             <Separator />
             <div className="flex items-center justify-between font-semibold text-sm">
               <span>Total Fijos</span>
-              <span className="font-mono">
+              <span data-sensitive className="font-mono">
                 {formatAmount(detail.total_projected_expenses, 'CRC')}
               </span>
             </div>
@@ -139,7 +139,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
                     <span>{meta.label}</span>
                     <span className="text-xs text-muted-foreground">({src.count})</span>
                   </div>
-                  <span className="font-mono whitespace-nowrap">
+                  <span data-sensitive className="font-mono whitespace-nowrap">
                     {formatAmount(src.net, 'CRC')}
                   </span>
                 </div>
@@ -153,7 +153,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
                     <Info className="w-3 h-3 text-muted-foreground" />
                     <span className="text-muted-foreground">No cubierto por fijos</span>
                   </div>
-                  <span className="font-mono">{formatAmount(detail.uncovered_actual, 'CRC')}</span>
+                  <span data-sensitive className="font-mono">{formatAmount(detail.uncovered_actual, 'CRC')}</span>
                 </div>
               </>
             )}
@@ -176,13 +176,13 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
               {detail.savings_items.map((item) => (
                 <div key={item.id} className="flex items-center justify-between text-sm">
                   <span>{item.name}</span>
-                  <span className="font-mono">{formatAmount(item.amount, 'CRC')}</span>
+                  <span data-sensitive className="font-mono">{formatAmount(item.amount, 'CRC')}</span>
                 </div>
               ))}
               <Separator />
               <div className="flex items-center justify-between font-semibold text-sm">
                 <span>Total Ahorro</span>
-                <span className="font-mono">
+                <span data-sensitive className="font-mono">
                   {formatAmount(detail.total_projected_savings, 'CRC')}
                 </span>
               </div>
@@ -198,19 +198,19 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
           <CardContent className="pt-6 space-y-3">
             <div className="flex items-center justify-between text-sm">
               <span>Total Ingresos</span>
-              <span className="font-mono font-medium text-primary">
+              <span data-sensitive className="font-mono font-medium text-primary">
                 +{formatAmount(detail.total_projected_income, 'CRC')}
               </span>
             </div>
             <div className="flex items-center justify-between text-sm">
               <span>Gran Total Egresos</span>
-              <span className="font-mono font-medium">
+              <span data-sensitive className="font-mono font-medium">
                 -{formatAmount(detail.gran_total_egresos, 'CRC')}
               </span>
             </div>
             <div className="flex items-center justify-between text-sm">
               <span>Ahorro</span>
-              <span className="font-mono font-medium">
+              <span data-sensitive className="font-mono font-medium">
                 -{formatAmount(detail.total_projected_savings, 'CRC')}
               </span>
             </div>
@@ -218,6 +218,7 @@ export default function MonthlyDetail({ detail, loading }: MonthlyDetailProps) {
             <div className="flex items-center justify-between">
               <span className="font-semibold">Balance Neto</span>
               <span
+                data-sensitive
                 className={cn(
                   'font-mono font-bold text-lg',
                   detail.net_balance >= 0 ? 'text-primary' : 'text-destructive',

frontend/src/components/budget/RecurringItemsManager.tsx

@@ -106,7 +106,7 @@ export default function RecurringItemsManager({
           <DataTableColumnHeader column={column} title="Monto" className="justify-end" />
         ),
         cell: ({ row }) => (
-          <span className="font-mono text-sm">
+          <span data-sensitive className="font-mono text-sm">
             {formatAmount(row.original.amount, row.original.currency)}
           </span>
         ),

frontend/src/components/budget/YearlyOverview.tsx

@@ -120,19 +120,19 @@ export default function YearlyOverview({
                     <span className="ml-1.5 inline-block w-1.5 h-1.5 rounded-full bg-primary" />
                   )}
                 </TableCell>
-                <TableCell className="text-right font-mono text-sm text-primary">
+                <TableCell data-sensitive className="text-right font-mono text-sm text-primary">
                   {formatAmount(m.projected_income, 'CRC')}
                 </TableCell>
-                <TableCell className="text-right font-mono text-sm">
+                <TableCell data-sensitive className="text-right font-mono text-sm">
                   {formatAmount(m.projected_fixed_expenses, 'CRC')}
                 </TableCell>
-                <TableCell className="text-right font-mono text-sm text-muted-foreground">
+                <TableCell data-sensitive className="text-right font-mono text-sm text-muted-foreground">
                   {formatAmount(m.uncovered_actual, 'CRC')}
                 </TableCell>
-                <TableCell className="text-right font-mono text-sm font-medium">
+                <TableCell data-sensitive className="text-right font-mono text-sm font-medium">
                   {formatAmount(m.gran_total_egresos, 'CRC')}
                 </TableCell>
-                <TableCell className="text-right font-mono text-sm text-muted-foreground">
+                <TableCell data-sensitive className="text-right font-mono text-sm text-muted-foreground">
                   {formatAmount(m.projected_savings, 'CRC')}
                 </TableCell>
                 <TableCell
@@ -145,13 +145,14 @@ export default function YearlyOverview({
                 >
                   {isBeforeFreshStart
                     ? '—'
-                    : <>
+                    : <span data-sensitive>
                         {m.carryover_balance >= 0 ? '+' : ''}
                         {formatAmount(m.carryover_balance, 'CRC')}
-                      </>
+                      </span>
                   }
                 </TableCell>
                 <TableCell
+                  data-sensitive
                   className={cn(
                     'text-right font-mono text-sm font-semibold',
                     m.net_balance >= 0 ? 'text-primary' : 'text-destructive',
@@ -193,9 +194,11 @@ export default function YearlyOverview({
                       {m.balance_overridden && (
                         <Pencil className="w-3 h-3 text-amber-500 shrink-0" />
                       )}
+                      <span data-sensitive>
                         {m.cumulative_balance >= 0 ? '+' : ''}
                         {formatAmount(m.cumulative_balance, 'CRC')}
                       </span>
+                    </span>
                   )}
                 </TableCell>
               </TableRow>

frontend/src/components/transactions/transaction-columns.tsx

@@ -88,6 +88,7 @@ export function getTransactionColumns({
         const tx = row.original;
         return (
           <span
+            data-sensitive
             className={cn(
               'font-mono font-medium',
               tx.transaction_type !== 'COMPRA' && 'text-primary',

frontend/src/index.css

@@ -129,3 +129,10 @@
     @apply font-sans;
     }
 }
+
+/* Privacy mode: blur sensitive financial data */
+.privacy [data-sensitive] {
+  filter: blur(8px);
+  user-select: none;
+  transition: filter 0.2s ease;
+}

frontend/src/pages/Budget.tsx

@@ -151,7 +151,7 @@ export default function Budget() {
                   <Card>
                     <CardContent className="pt-4 pb-3 px-4">
                       <p className="text-xs text-muted-foreground">Ingresos Anuales</p>
-                      <p className="text-lg font-bold font-mono text-primary">
+                      <p data-sensitive className="text-lg font-bold font-mono text-primary">
                         {formatAmount(projection.annual_income, 'CRC')}
                       </p>
                     </CardContent>
@@ -159,7 +159,7 @@ export default function Budget() {
                   <Card>
                     <CardContent className="pt-4 pb-3 px-4">
                       <p className="text-xs text-muted-foreground">Egresos Anuales</p>
-                      <p className="text-lg font-bold font-mono">
+                      <p data-sensitive className="text-lg font-bold font-mono">
                         {formatAmount(projection.annual_expenses, 'CRC')}
                       </p>
                     </CardContent>
@@ -167,7 +167,7 @@ export default function Budget() {
                   <Card>
                     <CardContent className="pt-4 pb-3 px-4">
                       <p className="text-xs text-muted-foreground">Ahorro Anual</p>
-                      <p className="text-lg font-bold font-mono">
+                      <p data-sensitive className="text-lg font-bold font-mono">
                         {formatAmount(projection.annual_savings, 'CRC')}
                       </p>
                     </CardContent>
@@ -176,6 +176,7 @@ export default function Budget() {
                     <CardContent className="pt-4 pb-3 px-4">
                       <p className="text-xs text-muted-foreground">Balance Neto Anual</p>
                       <p
+                        data-sensitive
                         className={cn(
                           'text-lg font-bold font-mono',
                           projection.annual_net >= 0 ? 'text-primary' : 'text-destructive',

frontend/src/pages/Dashboard.tsx

@@ -94,7 +94,7 @@ function AccountRow({
         </div>
       ) : (
         <div className="flex items-center gap-1.5">
-          <span className={cn('text-lg font-bold font-mono tracking-tight', isLiability && 'text-destructive')}>
+          <span data-sensitive className={cn('text-lg font-bold font-mono tracking-tight', isLiability && 'text-destructive')}>
             {formatAmount(account.balance, account.currency)}
           </span>
           <button
@@ -106,7 +106,7 @@ function AccountRow({
             <Pencil className="w-3.5 h-3.5" />
           </button>
           {isLiability && account.next_payment != null && (
-            <span className="text-xs font-mono text-destructive/60 ml-2">
+            <span data-sensitive className="text-xs font-mono text-destructive/60 ml-2">
               Next: {formatAmount(account.next_payment, account.currency)}
             </span>
           )}
@@ -215,10 +215,10 @@ export default function Dashboard() {
         <Card>
           <CardContent className="px-4 py-3">
             <div className="flex items-center justify-between text-sm font-mono text-muted-foreground">
-              <span>Net <span className="text-foreground font-bold">{netWorthBreakdown.net < 0 ? '-' : ''}{formatAmount(netWorthBreakdown.net, 'CRC')}</span></span>
+              <span>Net <span data-sensitive className="text-foreground font-bold">{netWorthBreakdown.net < 0 ? '-' : ''}{formatAmount(netWorthBreakdown.net, 'CRC')}</span></span>
               <div className="flex gap-4">
-                <span>Assets <span className="text-foreground">{formatAmount(netWorthBreakdown.assets, 'CRC')}</span></span>
-                <span>Liabilities <span className="text-foreground">{formatAmount(netWorthBreakdown.liabilities, 'CRC')}</span></span>
+                <span>Assets <span data-sensitive className="text-foreground">{formatAmount(netWorthBreakdown.assets, 'CRC')}</span></span>
+                <span>Liabilities <span data-sensitive className="text-foreground">{formatAmount(netWorthBreakdown.liabilities, 'CRC')}</span></span>
               </div>
             </div>
           </CardContent>
@@ -262,8 +262,8 @@ export default function Dashboard() {
           <CardContent className="p-4">
             <span className="text-xs font-medium text-muted-foreground uppercase tracking-wider">USD/CRC Exchange Rate</span>
             <div className="flex items-baseline gap-3 mt-1">
-              <span className="text-lg font-bold font-mono">Buy: ₡{exchangeRate.buy_rate.toFixed(2)}</span>
-              <span className="text-lg font-bold font-mono text-muted-foreground">Sell: ₡{exchangeRate.sell_rate.toFixed(2)}</span>
+              <span data-sensitive className="text-lg font-bold font-mono">Buy: ₡{exchangeRate.buy_rate.toFixed(2)}</span>
+              <span data-sensitive className="text-lg font-bold font-mono text-muted-foreground">Sell: ₡{exchangeRate.sell_rate.toFixed(2)}</span>
             </div>
           </CardContent>
         </Card>
@@ -306,7 +306,7 @@ export default function Dashboard() {
                       </p>
                     </div>
                   </div>
-                  <span className={cn(
+                  <span data-sensitive className={cn(
                     'font-mono text-sm font-medium shrink-0 ml-4',
                     tx.transaction_type !== 'COMPRA' && 'text-primary'
                   )}>

frontend/src/pages/Pensions.tsx

@@ -229,7 +229,7 @@ function ChartTooltipContent({
             />
             <span className="text-muted-foreground">{entry.name}</span>
           </span>
-          <span className="font-mono font-medium text-foreground">{formatCRC(entry.value)}</span>
+          <span data-sensitive className="font-mono font-medium text-foreground">{formatCRC(entry.value)}</span>
         </div>
       ))}
     </div>
@@ -440,7 +440,7 @@ export default function Pensions() {
                     <p className="text-xs text-muted-foreground uppercase tracking-wider font-medium">
                       Balance actual
                     </p>
-                    <p className="text-xl font-bold font-mono mt-0.5 leading-tight">
+                    <p data-sensitive className="text-xl font-bold font-mono mt-0.5 leading-tight">
                       {formatCRC(fund.startBalance)}
                     </p>
                     {snap && (
@@ -456,19 +456,19 @@ export default function Pensions() {
                     <div className="space-y-1.5 text-xs">
                       <div className="flex justify-between">
                         <span className="text-muted-foreground">Aportes</span>
-                        <span className="font-mono font-medium">
+                        <span data-sensitive className="font-mono font-medium">
                           {formatCRC(snap.aportes)}
                         </span>
                       </div>
                       <div className="flex justify-between">
                         <span className="text-muted-foreground">Rendimientos</span>
-                        <span className="font-mono font-medium text-emerald-500">
+                        <span data-sensitive className="font-mono font-medium text-emerald-500">
                           {formatCRC(snap.rendimientos)}
                         </span>
                       </div>
                       <div className="flex justify-between">
                         <span className="text-muted-foreground">Comisión</span>
-                        <span className="font-mono font-medium text-destructive">
+                        <span data-sensitive className="font-mono font-medium text-destructive">
                           {formatCRC(snap.comision)}
                         </span>
                       </div>
@@ -477,7 +477,7 @@ export default function Pensions() {
                     <div className="space-y-1.5 text-xs">
                       <div className="flex justify-between">
                         <span className="text-muted-foreground">Aporte mensual</span>
-                        <span className="font-mono font-medium">
+                        <span data-sensitive className="font-mono font-medium">
                           {formatCRC(fund.monthlyContribution)}
                         </span>
                       </div>
@@ -606,8 +606,8 @@ export default function Pensions() {
                       {fund.isDividend ? `Dividendos ${fund.annualRate}%` : `${fund.annualRate}% anual`}
                     </p>
                   )}
-                  <p className="text-lg font-bold font-mono" style={{ color: fund.color }}>
-                    +{formatCRC(earned)}
+                  <p data-sensitive className="text-lg font-bold font-mono" style={{ color: fund.color }}>
+                    {earned >= 0 ? '+' : ''}{formatCRC(earned)}
                   </p>
                   <p className="text-xs text-muted-foreground">en rendimientos</p>
                 </CardContent>
@@ -686,6 +686,7 @@ export default function Pensions() {
                       Valor en {years} {years === 1 ? 'año' : 'años'}
                     </p>
                     <p
+                      data-sensitive
                       className="text-lg font-bold font-mono leading-tight"
                       style={{ color: fund.color }}
                     >
@@ -855,7 +856,7 @@ export default function Pensions() {
                           {' — '}
                           {new Date(snap.period_end).toLocaleDateString('es-CR', { month: 'short', year: '2-digit' })}
                         </span>
-                        <span className="font-mono font-medium">{formatCRC(snap.saldo_final)}</span>
+                        <span data-sensitive className="font-mono font-medium">{formatCRC(snap.saldo_final)}</span>
                       </div>
                     ))}
                   </div>

frontend/src/pages/Salarios.tsx

@@ -64,7 +64,7 @@ export default function Salarios() {
         accessorKey: 'amount',
         header: ({ column }) => <DataTableColumnHeader column={column} title="Monto" />,
         cell: ({ row }) => (
-          <span className="font-mono font-bold text-primary">
+          <span data-sensitive className="font-mono font-bold text-primary">
             +{formatAmount(row.original.amount, row.original.currency)}
           </span>
         ),
@@ -126,7 +126,7 @@ export default function Salarios() {
                 <Banknote className="w-4 h-4" />
                 <span className="text-xs font-medium uppercase tracking-wider">Total acumulado</span>
               </div>
-              <span className="text-2xl font-bold font-mono text-primary">
+              <span data-sensitive className="text-2xl font-bold font-mono text-primary">
                 {formatAmount(summary.total_amount, 'CRC')}
               </span>
             </CardContent>

frontend/src/pages/Transactions.tsx

@@ -72,10 +72,10 @@ export default function Transactions() {
           <p className="text-sm text-muted-foreground mt-1">
             {transactions.length} transactions
             {totalCRC !== 0 && (
-              <> &middot; <span className="font-mono text-foreground">{formatAmount(totalCRC, 'CRC')}</span></>
+              <> &middot; <span data-sensitive className="font-mono text-foreground">{formatAmount(totalCRC, 'CRC')}</span></>
             )}
             {totalUSD !== 0 && (
-              <> &middot; <span className="font-mono text-foreground">{formatAmount(totalUSD, 'USD')}</span></>
+              <> &middot; <span data-sensitive className="font-mono text-foreground">{formatAmount(totalUSD, 'USD')}</span></>
             )}
           </p>
         </div>