diff --git a/app/categories/page.tsx b/app/categories/page.tsx
index 7127f0f..27456bc 100644
--- a/app/categories/page.tsx
+++ b/app/categories/page.tsx
@@ -351,7 +351,7 @@ export default function CategoriesPage() {
         onToggleAll={allExpanded ? collapseAll : expandAll}
       />
 
-      <div className="space-y-1">
+      <div className="space-y-3 md:space-y-4">
         {filteredParentCategories.map((parent: Category) => {
           const allChildren = childrenByParent[parent.id] || [];
           const children = searchQuery.trim()
@@ -387,8 +387,8 @@ export default function CategoriesPage() {
         })}
 
         {orphanCategories.length > 0 && (
-          <div className="border rounded-lg bg-card">
-            <div className="px-3 py-2 border-b">
+          <Card className="card-hover">
+            <div className="px-3 py-2 border-b border-border">
               <span className="text-sm font-medium text-muted-foreground">
                 Catégories non classées ({orphanCategories.length})
               </span>
@@ -405,7 +405,7 @@ export default function CategoriesPage() {
                 />
               ))}
             </div>
-          </div>
+          </Card>
         )}
       </div>
 
diff --git a/app/login/page.tsx b/app/login/page.tsx
index 28201fb..52ea34c 100644
--- a/app/login/page.tsx
+++ b/app/login/page.tsx
@@ -48,7 +48,7 @@ export default function LoginPage() {
 
   return (
     <div className="min-h-screen flex items-center justify-center bg-[var(--background)] p-4 page-background">
-      <Card className="w-full max-w-md page-content">
+      <Card className="w-full max-w-md page-content card-hover">
         <CardHeader className="space-y-1">
           <div className="flex items-center justify-center mb-4">
             <Lock className="w-12 h-12 text-[var(--primary)]" />
diff --git a/app/transactions/page.tsx b/app/transactions/page.tsx
index 12a7c7a..6b43d23 100644
--- a/app/transactions/page.tsx
+++ b/app/transactions/page.tsx
@@ -238,7 +238,7 @@ export default function TransactionsPage() {
       />
 
       {(!isLoadingChart || !isLoadingTransactions) && (
-        <Card className="mb-6">
+        <Card className="mb-6 card-hover">
           <Collapsible open={isStatsExpanded} onOpenChange={setIsStatsExpanded}>
             <CardHeader className="flex flex-row items-center justify-between space-y-0 py-3 px-6">
               <CardTitle className="text-base font-semibold">
@@ -272,7 +272,7 @@ export default function TransactionsPage() {
                 {/* Summary cards */}
                 {!isLoadingTransactions && (
                   <div className="grid gap-4 grid-cols-1 sm:grid-cols-2 mb-6">
-                    <Card>
+                    <Card className="card-hover">
                       <CardContent className="pt-6">
                         <div className="flex items-center justify-between">
                           <div>
@@ -287,7 +287,7 @@ export default function TransactionsPage() {
                         </div>
                       </CardContent>
                     </Card>
-                    <Card>
+                    <Card className="card-hover">
                       <CardContent className="pt-6">
                         <div className="flex items-center justify-between">
                           <div>
diff --git a/components/categories/parent-category-row.tsx b/components/categories/parent-category-row.tsx
index 9820797..5bffb8b 100644
--- a/components/categories/parent-category-row.tsx
+++ b/components/categories/parent-category-row.tsx
@@ -13,6 +13,7 @@ import {
   CollapsibleContent,
   CollapsibleTrigger,
 } from "@/components/ui/collapsible";
+import { Card } from "@/components/ui/card";
 import { CategoryIcon } from "@/components/ui/category-icon";
 import {
   Plus,
@@ -54,7 +55,7 @@ export function ParentCategoryRow({
   const isMobile = useIsMobile();
 
   return (
-    <div className="border rounded-lg bg-card">
+    <Card className="card-hover">
       <Collapsible open={isExpanded} onOpenChange={onToggleExpanded}>
         <div className="flex items-center justify-between px-2 md:px-3 py-1.5 md:py-2">
           <CollapsibleTrigger asChild>
@@ -155,6 +156,6 @@ export function ParentCategoryRow({
           )}
         </CollapsibleContent>
       </Collapsible>
-    </div>
+    </Card>
   );
 }
diff --git a/components/rules/rule-group-card.tsx b/components/rules/rule-group-card.tsx
index ddcd6a9..9aeb9b3 100644
--- a/components/rules/rule-group-card.tsx
+++ b/components/rules/rule-group-card.tsx
@@ -5,6 +5,7 @@ import { ChevronDown, ChevronRight, Plus, Tag } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { CategoryCombobox } from "@/components/ui/category-combobox";
+import { Card } from "@/components/ui/card";
 import { useIsMobile } from "@/hooks/use-mobile";
 import { cn } from "@/lib/utils";
 import type { Transaction, Category } from "@/lib/types";
@@ -54,7 +55,7 @@ export function RuleGroupCard({
   };
 
   return (
-    <div className="border border-border rounded-lg bg-card overflow-hidden">
+    <Card className="card-hover overflow-hidden">
       {/* Header */}
       <div
         className="flex flex-col md:flex-row md:items-center gap-2 md:gap-3 p-3 md:p-4 cursor-pointer hover:bg-accent/5"
@@ -247,6 +248,6 @@ export function RuleGroupCard({
           )}
         </div>
       )}
-    </div>
+    </Card>
   );
 }
diff --git a/components/statistics/balance-line-chart.tsx b/components/statistics/balance-line-chart.tsx
index bdd7824..fdbefee 100644
--- a/components/statistics/balance-line-chart.tsx
+++ b/components/statistics/balance-line-chart.tsx
@@ -57,7 +57,7 @@ export function BalanceLineChart({
   };
 
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
         <CardTitle>Évolution du solde</CardTitle>
         <div className="flex gap-1">
diff --git a/components/statistics/category-bar-chart.tsx b/components/statistics/category-bar-chart.tsx
index 031f0ee..6510485 100644
--- a/components/statistics/category-bar-chart.tsx
+++ b/components/statistics/category-bar-chart.tsx
@@ -73,7 +73,7 @@ export function CategoryBarChart({
   };
 
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader>
         <CardTitle>{title}</CardTitle>
       </CardHeader>
@@ -154,3 +154,5 @@ export function CategoryBarChart({
     </Card>
   );
 }
+
+// Find the Card component in this file
diff --git a/components/statistics/category-pie-chart.tsx b/components/statistics/category-pie-chart.tsx
index 8607b26..14ae242 100644
--- a/components/statistics/category-pie-chart.tsx
+++ b/components/statistics/category-pie-chart.tsx
@@ -51,7 +51,7 @@ export function CategoryPieChart({
   const currentData = isExpanded ? baseData : baseData.slice(0, maxItems);
 
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader className="flex flex-col md:flex-row md:items-center md:justify-between space-y-2 md:space-y-0 pb-2">
         <CardTitle className="text-sm md:text-base">{title}</CardTitle>
         <div className="flex flex-col md:flex-row gap-2 w-full md:w-auto">
diff --git a/components/statistics/category-trend-chart.tsx b/components/statistics/category-trend-chart.tsx
index f99aa24..689754d 100644
--- a/components/statistics/category-trend-chart.tsx
+++ b/components/statistics/category-trend-chart.tsx
@@ -96,7 +96,7 @@ export function CategoryTrendChart({
   };
 
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
         <CardTitle>Évolution des dépenses par catégorie</CardTitle>
         <div className="flex gap-2">
diff --git a/components/statistics/income-expense-trend-chart.tsx b/components/statistics/income-expense-trend-chart.tsx
index d490168..6c2852c 100644
--- a/components/statistics/income-expense-trend-chart.tsx
+++ b/components/statistics/income-expense-trend-chart.tsx
@@ -28,7 +28,7 @@ export function IncomeExpenseTrendChart({
   formatCurrency,
 }: IncomeExpenseTrendChartProps) {
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader>
         <CardTitle>Tendances revenus et dépenses</CardTitle>
       </CardHeader>
diff --git a/components/statistics/monthly-chart.tsx b/components/statistics/monthly-chart.tsx
index 140e5fc..649e29c 100644
--- a/components/statistics/monthly-chart.tsx
+++ b/components/statistics/monthly-chart.tsx
@@ -127,7 +127,7 @@ export function MonthlyChart({
 
   if (!collapsible) {
     return (
-      <Card>
+      <Card className="card-hover">
         <CardHeader>
           <CardTitle>Revenus vs Dépenses par mois</CardTitle>
         </CardHeader>
@@ -137,7 +137,7 @@ export function MonthlyChart({
   }
 
   return (
-    <Card>
+    <Card className="card-hover">
       <Collapsible open={isExpanded} onOpenChange={setIsExpanded}>
         <CardHeader className="flex flex-row items-center justify-between space-y-0 py-3 px-6">
           <CardTitle className="text-base font-semibold">
diff --git a/components/statistics/savings-trend-chart.tsx b/components/statistics/savings-trend-chart.tsx
index 175f548..d5f2286 100644
--- a/components/statistics/savings-trend-chart.tsx
+++ b/components/statistics/savings-trend-chart.tsx
@@ -31,7 +31,7 @@ export function SavingsTrendChart({
   const isPositive = latestSavings >= 0;
 
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
         <CardTitle>Évolution des économies</CardTitle>
         <div className="flex items-center gap-2">
diff --git a/components/statistics/top-expenses-list.tsx b/components/statistics/top-expenses-list.tsx
index 0174fef..15113ed 100644
--- a/components/statistics/top-expenses-list.tsx
+++ b/components/statistics/top-expenses-list.tsx
@@ -21,7 +21,7 @@ export function TopExpensesList({
   const isMobile = useIsMobile();
 
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader>
         <CardTitle className="text-sm md:text-base">Top 5 dépenses</CardTitle>
       </CardHeader>
diff --git a/components/statistics/year-over-year-chart.tsx b/components/statistics/year-over-year-chart.tsx
index c54c9f3..3b77f37 100644
--- a/components/statistics/year-over-year-chart.tsx
+++ b/components/statistics/year-over-year-chart.tsx
@@ -33,7 +33,7 @@ export function YearOverYearChart({
   previousYearLabel = "Année précédente",
 }: YearOverYearChartProps) {
   return (
-    <Card>
+    <Card className="card-hover">
       <CardHeader>
         <CardTitle>Comparaison année sur année</CardTitle>
       </CardHeader>