feat: improve theme selector and UI components

- Updated `ThemeSelector` to use a new `ThemePreview` component for better theme visualization.
- Refactored button implementation in `ThemeSelector` to utilize the new `Button` component, enhancing consistency.
- Added a UI showcase section in `GeneralSettingsPageClient` to display available UI components with different themes.
- Enhanced `Badge`, `Button`, and `Input` components with new variants and improved styling for better usability and visual appeal.
- Updated CSS variables in `globals.css` for improved contrast and accessibility across themes.

UI_COMPONENTS_GUIDE.md

@@ -0,0 +1,106 @@
+# Guide des Composants UI
+
+## 🎯 Principe
+
+**Les composants métier ne doivent JAMAIS utiliser directement les variables CSS.** Ils doivent utiliser les composants UI abstraits.
+
+## ❌ MAUVAIS
+
+```tsx
+// ❌ Composant métier avec variables CSS directes
+function TaskCard({ task }) {
+  return (
+    <div className="bg-[var(--card)] border border-[var(--border)] p-4 rounded-lg">
+      <button className="bg-[var(--primary)] text-[var(--primary-foreground)] px-4 py-2 rounded">
+        {task.title}
+      </button>
+    </div>
+  );
+}
+```
+
+## ✅ BON
+
+```tsx
+// ✅ Composant métier utilisant les composants UI
+import { Card, CardContent, Button } from '@/components/ui';
+
+function TaskCard({ task }) {
+  return (
+    <Card>
+      <CardContent>
+        <Button variant="primary">
+          {task.title}
+        </Button>
+      </CardContent>
+    </Card>
+  );
+}
+```
+
+## 📦 Composants UI Disponibles
+
+### Button
+```tsx
+<Button variant="primary" size="md">Action</Button>
+<Button variant="secondary">Secondaire</Button>
+<Button variant="destructive">Supprimer</Button>
+<Button variant="ghost">Ghost</Button>
+```
+
+### Badge
+```tsx
+<Badge variant="primary">Tag</Badge>
+<Badge variant="success">Succès</Badge>
+<Badge variant="destructive">Erreur</Badge>
+```
+
+### Alert
+```tsx
+<Alert variant="success">
+  <AlertTitle>Succès</AlertTitle>
+  <AlertDescription>Opération réussie</AlertDescription>
+</Alert>
+```
+
+### Input
+```tsx
+<Input placeholder="Saisir..." />
+<Input variant="error" placeholder="Erreur" />
+```
+
+### StyledCard
+```tsx
+<StyledCard variant="outline" color="primary">
+  Contenu avec style coloré
+</StyledCard>
+```
+
+## 🔄 Migration
+
+### Étape 1: Identifier les patterns
+- Rechercher `var(--` dans les composants métier
+- Identifier les patterns répétés (boutons, cartes, badges)
+
+### Étape 2: Créer des composants UI
+- Encapsuler les styles dans des composants UI
+- Utiliser des variants pour les variations
+
+### Étape 3: Remplacer dans les composants métier
+- Importer les composants UI
+- Remplacer les éléments HTML par les composants UI
+
+## 🎨 Avantages
+
+1. **Consistance** - Même apparence partout
+2. **Maintenance** - Changements centralisés
+3. **Réutilisabilité** - Composants réutilisables
+4. **Type Safety** - Props typées
+5. **Performance** - Styles optimisés
+
+## 📝 Règles
+
+1. **JAMAIS** de variables CSS dans les composants métier
+2. **TOUJOURS** utiliser les composants UI
+3. **CRÉER** de nouveaux composants UI si nécessaire
+4. **DOCUMENTER** les nouveaux composants UI

src/app/globals.css

@@ -34,7 +34,7 @@
   --border: #64748b; /* slate-500 - encore plus clair */
   --input: #334155; /* slate-700 - plus clair */
   --primary: #06b6d4; /* cyan-500 */
-  --primary-foreground: #f1f5f9; /* slate-100 */
+  --primary-foreground: #ffffff; /* white - better contrast with cyan */
   --muted: #64748b; /* slate-500 */
   --muted-foreground: #94a3b8; /* slate-400 */
   --accent: #f59e0b; /* amber-500 */
@@ -58,7 +58,7 @@
   --border: #6272a4; /* dracula comment */
   --input: #44475a; /* dracula current line */
   --primary: #ff79c6; /* dracula pink */
-  --primary-foreground: #282a36; /* dracula background */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #6272a4; /* dracula comment */
   --muted-foreground: #50fa7b; /* dracula green */
   --accent: #ffb86c; /* dracula orange */
@@ -82,7 +82,7 @@
   --border: #49483e; /* monokai line */
   --input: #3e3d32; /* monokai selection */
   --primary: #f92672; /* monokai pink */
-  --primary-foreground: #272822; /* monokai background */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #75715e; /* monokai comment */
   --muted-foreground: #a6e22e; /* monokai green */
   --accent: #fd971f; /* monokai orange */
@@ -106,7 +106,7 @@
   --border: #4c566a; /* nord3 */
   --input: #3b4252; /* nord1 */
   --primary: #88c0d0; /* nord7 */
-  --primary-foreground: #2e3440; /* nord0 */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #4c566a; /* nord3 */
   --muted-foreground: #81a1c1; /* nord9 */
   --accent: #d08770; /* nord12 */
@@ -130,7 +130,7 @@
   --border: #665c54; /* gruvbox bg3 */
   --input: #3c3836; /* gruvbox bg1 */
   --primary: #fe8019; /* gruvbox orange */
-  --primary-foreground: #282828; /* gruvbox bg0 */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #665c54; /* gruvbox bg3 */
   --muted-foreground: #a89984; /* gruvbox gray */
   --accent: #fabd2f; /* gruvbox yellow */
@@ -154,7 +154,7 @@
   --border: #565f89; /* tokyo-night comment */
   --input: #24283b; /* tokyo-night bg_highlight */
   --primary: #7aa2f7; /* tokyo-night blue */
-  --primary-foreground: #1a1b26; /* tokyo-night bg */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #565f89; /* tokyo-night comment */
   --muted-foreground: #9aa5ce; /* tokyo-night fg_dark */
   --accent: #ff9e64; /* tokyo-night orange */
@@ -178,7 +178,7 @@
   --border: #6c7086; /* catppuccin overlay0 */
   --input: #313244; /* catppuccin surface0 */
   --primary: #cba6f7; /* catppuccin mauve */
-  --primary-foreground: #1e1e2e; /* catppuccin base */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #6c7086; /* catppuccin overlay0 */
   --muted-foreground: #a6adc8; /* catppuccin subtext0 */
   --accent: #fab387; /* catppuccin peach */
@@ -202,7 +202,7 @@
   --border: #6e6a86; /* rose-pine muted */
   --input: #26233a; /* rose-pine surface */
   --primary: #c4a7e7; /* rose-pine iris */
-  --primary-foreground: #191724; /* rose-pine base */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #6e6a86; /* rose-pine muted */
   --muted-foreground: #908caa; /* rose-pine subtle */
   --accent: #f6c177; /* rose-pine gold */
@@ -226,7 +226,7 @@
   --border: #5c6370; /* one-dark bg3 */
   --input: #3e4451; /* one-dark bg1 */
   --primary: #61afef; /* one-dark blue */
-  --primary-foreground: #282c34; /* one-dark bg */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #5c6370; /* one-dark bg3 */
   --muted-foreground: #828997; /* one-dark gray */
   --accent: #e06c75; /* one-dark red */
@@ -250,7 +250,7 @@
   --border: #3c3c3c; /* material outline */
   --input: #1e1e1e; /* material surface */
   --primary: #bb86fc; /* material primary */
-  --primary-foreground: #121212; /* material bg */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #3c3c3c; /* material outline */
   --muted-foreground: #b3b3b3; /* material on-surface-variant */
   --accent: #ffab40; /* material secondary */
@@ -274,7 +274,7 @@
   --border: #586e75; /* solarized base01 */
   --input: #073642; /* solarized base02 */
   --primary: #268bd2; /* solarized blue */
-  --primary-foreground: #002b36; /* solarized base03 */
+  --primary-foreground: #ffffff; /* white for contrast */
   --muted: #586e75; /* solarized base01 */
   --muted-foreground: #657b83; /* solarized base00 */
   --accent: #b58900; /* solarized yellow */

src/app/ui-showcase/page.tsx

@@ -0,0 +1,5 @@
+import { UIShowcaseClient } from '@/components/ui-showcase/UIShowcaseClient';
+
+export default function UIShowcasePage() {
+  return <UIShowcaseClient />;
+}

src/components/ThemeSelector.tsx

@@ -2,6 +2,8 @@
 
 import { useTheme } from '@/contexts/ThemeContext';
 import { Theme } from '@/lib/types';
+import { Button } from '@/components/ui/Button';
+
 
 const themes: { id: Theme; name: string; description: string }[] = [
   { id: 'dark', name: 'Dark', description: 'Thème sombre par défaut' },
@@ -17,6 +19,50 @@ const themes: { id: Theme; name: string; description: string }[] = [
   { id: 'solarized', name: 'Solarized', description: 'Thème Solarized scientifique' },
 ];
 
+// Composant pour l'aperçu du thème
+function ThemePreview({ themeId, isSelected }: { themeId: Theme; isSelected: boolean }) {
+  return (
+    <div 
+      className={`w-16 h-12 rounded-lg border-2 overflow-hidden ${themeId}`}
+      style={{ 
+        borderColor: isSelected ? 'var(--primary)' : 'var(--border)',
+        backgroundColor: 'var(--background)'
+      }}
+    >
+      {/* Barre de titre */}
+      <div 
+        className="h-3 w-full"
+        style={{ backgroundColor: 'var(--card)' }}
+      />
+      
+      {/* Contenu avec couleurs du thème */}
+      <div className="p-1 h-9 flex flex-col gap-0.5">
+        {/* Ligne de texte */}
+        <div 
+          className="h-1 rounded-sm"
+          style={{ backgroundColor: 'var(--foreground)' }}
+        />
+        
+        {/* Couleurs d'accent */}
+        <div className="flex gap-0.5">
+          <div 
+            className="h-1 flex-1 rounded-sm"
+            style={{ backgroundColor: 'var(--primary)' }}
+          />
+          <div 
+            className="h-1 flex-1 rounded-sm"
+            style={{ backgroundColor: 'var(--accent)' }}
+          />
+          <div 
+            className="h-1 flex-1 rounded-sm"
+            style={{ backgroundColor: 'var(--success)' }}
+          />
+        </div>
+      </div>
+    </div>
+  );
+}
+
 export function ThemeSelector() {
   const { theme, setTheme } = useTheme();
 
@@ -36,134 +82,19 @@ export function ThemeSelector() {
       
       <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-3">
         {themes.map((themeOption) => (
-          <button
+          <Button
             key={themeOption.id}
             onClick={() => setTheme(themeOption.id)}
-            className={`
-              p-4 rounded-lg border text-left transition-all duration-200 group
-              ${theme === themeOption.id 
-                ? 'border-[var(--primary)] bg-[color-mix(in_srgb,var(--primary)_15%,transparent)] shadow-lg shadow-[var(--primary)]/20' 
-                : 'border-[var(--border)] hover:border-[var(--primary)] hover:bg-[color-mix(in_srgb,var(--primary)_8%,transparent)] hover:shadow-md'
-              }
-            `}
+            variant={theme === themeOption.id ? 'selected' : 'secondary'}
+            className="p-4 h-auto text-left justify-start"
           >
             <div className="flex items-start gap-3">
               {/* Aperçu du thème */}
               <div className="flex-shrink-0">
-                <div 
-                  className="w-16 h-12 rounded-lg border-2 overflow-hidden"
-                  style={{ 
-                    borderColor: theme === themeOption.id ? 'var(--primary)' : 'var(--border)',
-                    backgroundColor: themeOption.id === 'light' ? '#f1f5f9' : 
-                                    themeOption.id === 'dark' ? '#1e293b' :
-                                    themeOption.id === 'dracula' ? '#282a36' :
-                                    themeOption.id === 'monokai' ? '#272822' :
-                                    themeOption.id === 'nord' ? '#2e3440' :
-                                    themeOption.id === 'gruvbox' ? '#282828' :
-                                    themeOption.id === 'tokyo_night' ? '#1a1b26' :
-                                    themeOption.id === 'catppuccin' ? '#1e1e2e' :
-                                    themeOption.id === 'rose_pine' ? '#191724' :
-                                    themeOption.id === 'one_dark' ? '#282c34' :
-                                    themeOption.id === 'material' ? '#121212' :
-                                    '#002b36'
-                  }}
-                >
-                  {/* Barre de titre */}
-                  <div 
-                    className="h-3 w-full"
-                    style={{ 
-                      backgroundColor: themeOption.id === 'light' ? '#ffffff' : 
-                                      themeOption.id === 'dark' ? '#334155' :
-                                      themeOption.id === 'dracula' ? '#44475a' :
-                                      themeOption.id === 'monokai' ? '#3e3d32' :
-                                      themeOption.id === 'nord' ? '#3b4252' :
-                                      themeOption.id === 'gruvbox' ? '#3c3836' :
-                                      themeOption.id === 'tokyo_night' ? '#24283b' :
-                                      themeOption.id === 'catppuccin' ? '#313244' :
-                                      themeOption.id === 'rose_pine' ? '#26233a' :
-                                      themeOption.id === 'one_dark' ? '#3e4451' :
-                                      themeOption.id === 'material' ? '#1e1e1e' :
-                                      '#073642'
-                    }}
+                <ThemePreview 
+                  themeId={themeOption.id} 
+                  isSelected={theme === themeOption.id} 
                 />
-                  
-                  {/* Contenu avec couleurs du thème */}
-                  <div className="p-1 h-9 flex flex-col gap-0.5">
-                    {/* Ligne de texte */}
-                    <div 
-                      className="h-1 rounded-sm"
-                      style={{ 
-                        backgroundColor: themeOption.id === 'light' ? '#0f172a' : 
-                                        themeOption.id === 'dark' ? '#f1f5f9' :
-                                        themeOption.id === 'dracula' ? '#f8f8f2' :
-                                        themeOption.id === 'monokai' ? '#f8f8f2' :
-                                        themeOption.id === 'nord' ? '#d8dee9' :
-                                        themeOption.id === 'gruvbox' ? '#ebdbb2' :
-                                        themeOption.id === 'tokyo_night' ? '#a9b1d6' :
-                                        themeOption.id === 'catppuccin' ? '#cdd6f4' :
-                                        themeOption.id === 'rose_pine' ? '#e0def4' :
-                                        themeOption.id === 'one_dark' ? '#abb2bf' :
-                                        themeOption.id === 'material' ? '#ffffff' :
-                                        '#93a1a1'
-                      }}
-                    />
-                    
-                    {/* Couleurs d'accent */}
-                    <div className="flex gap-0.5">
-                      <div 
-                        className="h-1 flex-1 rounded-sm"
-                        style={{ 
-                          backgroundColor: themeOption.id === 'light' ? '#0891b2' : 
-                                          themeOption.id === 'dark' ? '#06b6d4' :
-                                          themeOption.id === 'dracula' ? '#ff79c6' :
-                                          themeOption.id === 'monokai' ? '#f92672' :
-                                          themeOption.id === 'nord' ? '#88c0d0' :
-                                          themeOption.id === 'gruvbox' ? '#fe8019' :
-                                          themeOption.id === 'tokyo_night' ? '#7aa2f7' :
-                                          themeOption.id === 'catppuccin' ? '#cba6f7' :
-                                          themeOption.id === 'rose_pine' ? '#c4a7e7' :
-                                          themeOption.id === 'one_dark' ? '#61afef' :
-                                          themeOption.id === 'material' ? '#bb86fc' :
-                                          '#268bd2'
-                        }}
-                      />
-                      <div 
-                        className="h-1 flex-1 rounded-sm"
-                        style={{ 
-                          backgroundColor: themeOption.id === 'light' ? '#d97706' : 
-                                          themeOption.id === 'dark' ? '#f59e0b' :
-                                          themeOption.id === 'dracula' ? '#ffb86c' :
-                                          themeOption.id === 'monokai' ? '#fd971f' :
-                                          themeOption.id === 'nord' ? '#d08770' :
-                                          themeOption.id === 'gruvbox' ? '#fabd2f' :
-                                          themeOption.id === 'tokyo_night' ? '#ff9e64' :
-                                          themeOption.id === 'catppuccin' ? '#fab387' :
-                                          themeOption.id === 'rose_pine' ? '#f6c177' :
-                                          themeOption.id === 'one_dark' ? '#e06c75' :
-                                          themeOption.id === 'material' ? '#ffab40' :
-                                          '#b58900'
-                        }}
-                      />
-                      <div 
-                        className="h-1 flex-1 rounded-sm"
-                        style={{ 
-                          backgroundColor: themeOption.id === 'light' ? '#059669' : 
-                                          themeOption.id === 'dark' ? '#10b981' :
-                                          themeOption.id === 'dracula' ? '#50fa7b' :
-                                          themeOption.id === 'monokai' ? '#a6e22e' :
-                                          themeOption.id === 'nord' ? '#a3be8c' :
-                                          themeOption.id === 'gruvbox' ? '#b8bb26' :
-                                          themeOption.id === 'tokyo_night' ? '#9ece6a' :
-                                          themeOption.id === 'catppuccin' ? '#a6e3a1' :
-                                          themeOption.id === 'rose_pine' ? '#9ccfd8' :
-                                          themeOption.id === 'one_dark' ? '#98c379' :
-                                          themeOption.id === 'material' ? '#4caf50' :
-                                          '#859900'
-                        }}
-                      />
-                    </div>
-                  </div>
-                </div>
               </div>
               
               <div className="flex-1 min-w-0">
@@ -180,7 +111,7 @@ export function ThemeSelector() {
                 )}
               </div>
             </div>
-          </button>
+          </Button>
         ))}
       </div>
     </div>

src/components/settings/GeneralSettingsPageClient.tsx

@@ -53,6 +53,28 @@ export function GeneralSettingsPageClient({ initialTags }: GeneralSettingsPageCl
               <ThemeSelector />
             </div>
 
+            {/* UI Showcase */}
+            <Card>
+              <CardContent className="p-6">
+                <div className="flex items-center justify-between">
+                  <div>
+                    <h3 className="text-lg font-medium text-[var(--foreground)] mb-2">
+                      🎨 UI Components Showcase
+                    </h3>
+                    <p className="text-sm text-[var(--muted-foreground)]">
+                      Visualisez tous les composants UI disponibles avec différents thèmes
+                    </p>
+                  </div>
+                  <Link 
+                    href="/ui-showcase"
+                    className="inline-flex items-center px-4 py-2 bg-[var(--primary)] text-[var(--primary-foreground)] rounded-md hover:bg-[color-mix(in_srgb,var(--primary)_90%,transparent)] transition-colors font-medium"
+                  >
+                    Voir la démo
+                  </Link>
+                </div>
+              </CardContent>
+            </Card>
+
             {/* Gestion des tags */}
             <TagsManagement
               tags={tags}

src/components/ui-showcase/UIShowcaseClient.tsx

@@ -0,0 +1,327 @@
+'use client';
+
+import { useState } from 'react';
+import { Button } from '@/components/ui/Button';
+import { Badge } from '@/components/ui/Badge';
+import { Alert, AlertTitle, AlertDescription } from '@/components/ui/Alert';
+import { Input } from '@/components/ui/Input';
+import { StyledCard } from '@/components/ui/StyledCard';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card';
+import { ThemeSelector } from '@/components/ThemeSelector';
+
+export function UIShowcaseClient() {
+  const [inputValue, setInputValue] = useState('');
+
+  return (
+    <div className="min-h-screen bg-[var(--background)] p-8">
+      <div className="max-w-6xl mx-auto space-y-16">
+        {/* Header */}
+        <div className="text-center space-y-6">
+          <h1 className="text-4xl font-mono font-bold text-[var(--foreground)]">
+            🎨 UI Components Showcase
+          </h1>
+          <p className="text-lg text-[var(--muted-foreground)]">
+            Démonstration de tous les composants UI disponibles
+          </p>
+        </div>
+
+        {/* Theme Selector */}
+        <section className="space-y-8">
+          <div className="text-center">
+            <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] mb-6">
+              🎨 Sélecteur de Thèmes
+            </h2>
+            <p className="text-[var(--muted-foreground)] mb-8">
+              Changez de thème pour voir comment tous les composants s'adaptent
+            </p>
+          </div>
+          
+          <div className="max-w-4xl mx-auto">
+            <div className="bg-[var(--card)]/30 border border-[var(--border)]/50 rounded-lg p-6 backdrop-blur-sm">
+              <ThemeSelector />
+            </div>
+          </div>
+        </section>
+
+        {/* Buttons Section */}
+        <section className="space-y-8">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
+            Buttons
+          </h2>
+          
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">Variants</h3>
+              <div className="space-y-4">
+                <Button variant="primary">Primary Button</Button>
+                <Button variant="secondary">Secondary Button</Button>
+                <Button variant="ghost">Ghost Button</Button>
+                <Button variant="destructive">Destructive Button</Button>
+                <Button variant="success">Success Button</Button>
+                <Button variant="selected">Selected Button</Button>
+              </div>
+            </div>
+
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">Sizes</h3>
+              <div className="space-y-4">
+                <Button size="sm">Small Button</Button>
+                <Button size="md">Medium Button</Button>
+                <Button size="lg">Large Button</Button>
+              </div>
+            </div>
+
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">States</h3>
+              <div className="space-y-4">
+                <Button>Normal State</Button>
+                <Button disabled>Disabled State</Button>
+                <Button className="opacity-50">Loading State</Button>
+              </div>
+            </div>
+          </div>
+        </section>
+
+        {/* Badges Section */}
+        <section className="space-y-8">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
+            Badges
+          </h2>
+          
+          <div className="space-y-6">
+            <div className="flex flex-wrap gap-4">
+              <Badge variant="default">Default Badge</Badge>
+              <Badge variant="primary">Primary Badge</Badge>
+              <Badge variant="success">Success Badge</Badge>
+              <Badge variant="destructive">Destructive Badge</Badge>
+              <Badge variant="accent">Accent Badge</Badge>
+              <Badge variant="purple">Purple Badge</Badge>
+              <Badge variant="yellow">Yellow Badge</Badge>
+              <Badge variant="green">Green Badge</Badge>
+              <Badge variant="blue">Blue Badge</Badge>
+              <Badge variant="gray">Gray Badge</Badge>
+            </div>
+          </div>
+        </section>
+
+        {/* Alerts Section */}
+        <section className="space-y-8">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
+            Alerts
+          </h2>
+          
+          <div className="space-y-6">
+            <Alert variant="default">
+              <AlertTitle>Information</AlertTitle>
+              <AlertDescription>
+                Ceci est une alerte par défaut avec des informations importantes.
+              </AlertDescription>
+            </Alert>
+
+            <Alert variant="success">
+              <AlertTitle>Succès</AlertTitle>
+              <AlertDescription>
+                Opération terminée avec succès ! Toutes les données ont été sauvegardées.
+              </AlertDescription>
+            </Alert>
+
+            <Alert variant="destructive">
+              <AlertTitle>Erreur</AlertTitle>
+              <AlertDescription>
+                Une erreur s'est produite lors du traitement de votre demande.
+              </AlertDescription>
+            </Alert>
+
+            <Alert variant="warning">
+              <AlertTitle>Attention</AlertTitle>
+              <AlertDescription>
+                Veuillez vérifier vos informations avant de continuer.
+              </AlertDescription>
+            </Alert>
+
+            <Alert variant="info">
+              <AlertTitle>Conseil</AlertTitle>
+              <AlertDescription>
+                Astuce : Vous pouvez utiliser les raccourcis clavier pour naviguer plus rapidement.
+              </AlertDescription>
+            </Alert>
+          </div>
+        </section>
+
+        {/* Inputs Section */}
+        <section className="space-y-8">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
+            Inputs
+          </h2>
+          
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">Types</h3>
+              <div className="space-y-4">
+                <Input placeholder="Texte normal" />
+                <Input type="email" placeholder="Adresse email" />
+                <Input type="password" placeholder="Mot de passe" />
+                <Input type="number" placeholder="Nombre" />
+                <Input type="search" placeholder="Rechercher..." />
+              </div>
+            </div>
+
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">États</h3>
+              <div className="space-y-4">
+                <Input placeholder="État normal" />
+                <Input placeholder="État focus" autoFocus />
+                <Input placeholder="État désactivé" disabled />
+                <Input variant="error" placeholder="État erreur" />
+                <Input value={inputValue} onChange={(e) => setInputValue(e.target.value)} placeholder="État avec valeur" />
+              </div>
+            </div>
+          </div>
+        </section>
+
+        {/* Cards Section */}
+        <section className="space-y-6">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-2">
+            Cards
+          </h2>
+          
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+            {/* Standard Cards */}
+            <Card>
+              <CardHeader>
+                <CardTitle>Card Standard</CardTitle>
+              </CardHeader>
+              <CardContent>
+                <p className="text-[var(--muted-foreground)]">
+                  Ceci est une carte standard avec header et contenu.
+                </p>
+              </CardContent>
+            </Card>
+
+            <Card variant="elevated">
+              <CardHeader>
+                <CardTitle>Card Élevée</CardTitle>
+              </CardHeader>
+              <CardContent>
+                <p className="text-[var(--muted-foreground)]">
+                  Cette carte a une ombre plus prononcée.
+                </p>
+              </CardContent>
+            </Card>
+
+            <Card variant="bordered">
+              <CardHeader>
+                <CardTitle>Card Bordée</CardTitle>
+              </CardHeader>
+              <CardContent>
+                <p className="text-[var(--muted-foreground)]">
+                  Cette carte a une bordure colorée.
+                </p>
+              </CardContent>
+            </Card>
+
+            {/* Styled Cards */}
+            <StyledCard color="primary" className="p-4">
+              <h3 className="font-medium mb-2">Styled Card Primary</h3>
+              <p className="text-sm opacity-80">
+                Carte avec couleur primaire et fond subtil.
+              </p>
+            </StyledCard>
+
+            <StyledCard color="success" className="p-4">
+              <h3 className="font-medium mb-2">Styled Card Success</h3>
+              <p className="text-sm opacity-80">
+                Carte avec couleur de succès.
+              </p>
+            </StyledCard>
+
+            <StyledCard color="destructive" className="p-4">
+              <h3 className="font-medium mb-2">Styled Card Destructive</h3>
+              <p className="text-sm opacity-80">
+                Carte avec couleur destructive.
+              </p>
+            </StyledCard>
+          </div>
+        </section>
+
+        {/* Interactive Demo */}
+        <section className="space-y-6">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-2">
+            Démonstration Interactive
+          </h2>
+          
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+            <Card>
+              <CardHeader>
+                <CardTitle>Formulaire d'exemple</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <div>
+                  <label className="block text-sm font-medium text-[var(--foreground)] mb-2">
+                    Nom d'utilisateur
+                  </label>
+                  <Input placeholder="Entrez votre nom" />
+                </div>
+                
+                <div>
+                  <label className="block text-sm font-medium text-[var(--foreground)] mb-2">
+                    Email
+                  </label>
+                  <Input type="email" placeholder="votre@email.com" />
+                </div>
+                
+                <div>
+                  <label className="block text-sm font-medium text-[var(--foreground)] mb-2">
+                    Statut
+                  </label>
+                  <div className="flex gap-2">
+                    <Badge variant="success">Actif</Badge>
+                    <Badge variant="gray">En attente</Badge>
+                  </div>
+                </div>
+                
+                <div className="flex gap-3 pt-4">
+                  <Button variant="primary">Enregistrer</Button>
+                  <Button variant="secondary">Annuler</Button>
+                </div>
+              </CardContent>
+            </Card>
+
+            <Card>
+              <CardHeader>
+                <CardTitle>Notifications</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <Alert variant="success">
+                  <AlertTitle>Bienvenue !</AlertTitle>
+                  <AlertDescription>
+                    Votre compte a été créé avec succès.
+                  </AlertDescription>
+                </Alert>
+                
+                <Alert variant="warning">
+                  <AlertTitle>Mise à jour disponible</AlertTitle>
+                  <AlertDescription>
+                    Une nouvelle version de l'application est disponible.
+                  </AlertDescription>
+                </Alert>
+                
+                <div className="flex gap-2">
+                  <Button size="sm">Voir les détails</Button>
+                  <Button size="sm" variant="ghost">Ignorer</Button>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+        </section>
+
+        {/* Footer */}
+        <div className="text-center pt-8 border-t border-[var(--border)]">
+          <p className="text-[var(--muted-foreground)]">
+            Cette page est accessible via <code className="bg-[var(--card)] px-2 py-1 rounded text-sm">/ui-showcase</code>
+          </p>
+        </div>
+      </div>
+    </div>
+  );
+}

src/components/ui/Alert.tsx

@@ -0,0 +1,58 @@
+import { HTMLAttributes, forwardRef } from 'react';
+import { cn } from '@/lib/utils';
+
+interface AlertProps extends HTMLAttributes<HTMLDivElement> {
+  variant?: 'default' | 'success' | 'destructive' | 'warning' | 'info';
+}
+
+const Alert = forwardRef<HTMLDivElement, AlertProps>(
+  ({ className, variant = 'default', ...props }, ref) => {
+    const variants = {
+      default: 'bg-[var(--card)] text-[var(--foreground)] border border-[var(--border)]',
+      success: 'bg-[color-mix(in_srgb,var(--success)_10%,transparent)] text-[var(--success)] border border-[color-mix(in_srgb,var(--success)_20%,var(--border))]',
+      destructive: 'bg-[color-mix(in_srgb,var(--destructive)_10%,transparent)] text-[var(--destructive)] border border-[color-mix(in_srgb,var(--destructive)_20%,var(--border))]',
+      warning: 'bg-[color-mix(in_srgb,var(--accent)_10%,transparent)] text-[var(--accent)] border border-[color-mix(in_srgb,var(--accent)_20%,var(--border))]',
+      info: 'bg-[color-mix(in_srgb,var(--primary)_10%,transparent)] text-[var(--primary)] border border-[color-mix(in_srgb,var(--primary)_20%,var(--border))]'
+    };
+
+    return (
+      <div
+        ref={ref}
+        className={cn(
+          'relative w-full rounded-lg border p-4',
+          variants[variant],
+          className
+        )}
+        {...props}
+      />
+    );
+  }
+);
+
+Alert.displayName = 'Alert';
+
+const AlertTitle = forwardRef<HTMLParagraphElement, HTMLAttributes<HTMLHeadingElement>>(
+  ({ className, ...props }, ref) => (
+    <h5
+      ref={ref}
+      className={cn('mb-1 font-medium leading-none tracking-tight', className)}
+      {...props}
+    />
+  )
+);
+
+AlertTitle.displayName = 'AlertTitle';
+
+const AlertDescription = forwardRef<HTMLParagraphElement, HTMLAttributes<HTMLParagraphElement>>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn('text-sm [&_p]:leading-relaxed', className)}
+      {...props}
+    />
+  )
+);
+
+AlertDescription.displayName = 'AlertDescription';
+
+export { Alert, AlertTitle, AlertDescription };

src/components/ui/Badge.tsx

@@ -1,38 +1,33 @@
 import { HTMLAttributes, forwardRef } from 'react';
 import { cn } from '@/lib/utils';
 
-interface BadgeProps extends HTMLAttributes<HTMLSpanElement> {
-  variant?: 'default' | 'primary' | 'success' | 'warning' | 'danger' | 'outline';
-  size?: 'sm' | 'md';
+interface BadgeProps extends HTMLAttributes<HTMLDivElement> {
+  variant?: 'default' | 'primary' | 'success' | 'destructive' | 'accent' | 'purple' | 'yellow' | 'green' | 'blue' | 'gray';
 }
 
-const Badge = forwardRef<HTMLSpanElement, BadgeProps>(
-  ({ className, variant = 'default', size = 'md', ...props }, ref) => {
-    const baseStyles = 'inline-flex items-center font-mono font-medium transition-all duration-200';
-    
+const Badge = forwardRef<HTMLDivElement, BadgeProps>(
+  ({ className, variant = 'default', ...props }, ref) => {
     const variants = {
-      default: 'bg-[var(--card)] text-[var(--muted-foreground)] border border-[var(--border)]',
-      primary: 'bg-[var(--primary)]/20 text-[var(--primary)] border border-[var(--primary)]/30',
-      success: 'bg-[var(--success)]/20 text-[var(--success)] border border-[var(--success)]/30',
-      warning: 'bg-[var(--accent)]/20 text-[var(--accent)] border border-[var(--accent)]/30',
-      danger: 'bg-[var(--destructive)]/20 text-[var(--destructive)] border border-[var(--destructive)]/30',
-      outline: 'bg-transparent text-[var(--muted-foreground)] border border-[var(--border)] hover:bg-[var(--card-hover)] hover:text-[var(--foreground)]'
-    };
-    
-    const sizes = {
-      sm: 'px-1.5 py-0.5 text-xs rounded',
-      md: 'px-2 py-1 text-xs rounded-md'
+      default: 'bg-[var(--card)] text-[var(--foreground)] border border-[var(--border)]',
+      primary: 'bg-[color-mix(in_srgb,var(--primary)_10%,transparent)] text-[var(--primary)] border border-[color-mix(in_srgb,var(--primary)_25%,var(--border))]',
+      success: 'bg-[color-mix(in_srgb,var(--success)_10%,transparent)] text-[var(--success)] border border-[color-mix(in_srgb,var(--success)_25%,var(--border))]',
+      destructive: 'bg-[color-mix(in_srgb,var(--destructive)_10%,transparent)] text-[var(--destructive)] border border-[color-mix(in_srgb,var(--destructive)_25%,var(--border))]',
+      accent: 'bg-[color-mix(in_srgb,var(--accent)_10%,transparent)] text-[var(--accent)] border border-[color-mix(in_srgb,var(--accent)_25%,var(--border))]',
+      purple: 'bg-[color-mix(in_srgb,var(--purple)_10%,transparent)] text-[var(--purple)] border border-[color-mix(in_srgb,var(--purple)_25%,var(--border))]',
+      yellow: 'bg-[color-mix(in_srgb,var(--yellow)_10%,transparent)] text-[var(--yellow)] border border-[color-mix(in_srgb,var(--yellow)_25%,var(--border))]',
+      green: 'bg-[color-mix(in_srgb,var(--green)_10%,transparent)] text-[var(--green)] border border-[color-mix(in_srgb,var(--green)_25%,var(--border))]',
+      blue: 'bg-[color-mix(in_srgb,var(--blue)_10%,transparent)] text-[var(--blue)] border border-[color-mix(in_srgb,var(--blue)_25%,var(--border))]',
+      gray: 'bg-[color-mix(in_srgb,var(--gray)_10%,transparent)] text-[var(--gray)] border border-[color-mix(in_srgb,var(--gray)_25%,var(--border))]'
     };
 
     return (
-      <span
+      <div
+        ref={ref}
         className={cn(
-          baseStyles,
+          'inline-flex items-center rounded-md px-2.5 py-0.5 text-xs font-medium transition-colors',
           variants[variant],
-          sizes[size],
           className
         )}
-        ref={ref}
         {...props}
       />
     );

src/components/ui/Button.tsx

@@ -2,36 +2,36 @@ import { ButtonHTMLAttributes, forwardRef } from 'react';
 import { cn } from '@/lib/utils';
 
 interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
-  variant?: 'primary' | 'secondary' | 'danger' | 'ghost';
+  variant?: 'primary' | 'secondary' | 'ghost' | 'destructive' | 'success' | 'selected';
   size?: 'sm' | 'md' | 'lg';
 }
 
 const Button = forwardRef<HTMLButtonElement, ButtonProps>(
   ({ className, variant = 'primary', size = 'md', ...props }, ref) => {
-    const baseStyles = 'inline-flex items-center justify-center font-mono font-medium transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-[var(--background)] disabled:opacity-50 disabled:cursor-not-allowed';
-    
     const variants = {
-      primary: 'bg-[var(--primary)] hover:bg-[var(--primary)]/80 text-[var(--primary-foreground)] border border-[var(--primary)]/30 shadow-[var(--primary)]/20 shadow-lg hover:shadow-[var(--primary)]/30 focus:ring-[var(--primary)]',
-      secondary: 'bg-[var(--card)] hover:bg-[var(--card-hover)] text-[var(--foreground)] border border-[var(--border)] shadow-[var(--muted)]/20 shadow-lg hover:shadow-[var(--muted)]/30 focus:ring-[var(--muted)]',
-      danger: 'bg-[var(--destructive)] hover:bg-[var(--destructive)]/80 text-white border border-[var(--destructive)]/30 shadow-[var(--destructive)]/20 shadow-lg hover:shadow-[var(--destructive)]/30 focus:ring-[var(--destructive)]',
-      ghost: 'bg-transparent hover:bg-[var(--card)]/50 text-[var(--muted-foreground)] hover:text-[var(--foreground)] border border-[var(--border)]/50 hover:border-[var(--border)] focus:ring-[var(--muted)]'
+      primary: 'bg-[var(--primary)] text-[var(--primary-foreground)] hover:bg-[color-mix(in_srgb,var(--primary)_90%,transparent)]',
+      secondary: 'bg-[var(--card)] text-[var(--foreground)] border border-[var(--border)] hover:bg-[var(--card-hover)]',
+      ghost: 'text-[var(--foreground)] hover:bg-[var(--card-hover)]',
+      destructive: 'bg-[var(--destructive)] text-white hover:bg-[color-mix(in_srgb,var(--destructive)_90%,transparent)]',
+      success: 'bg-[var(--success)] text-white hover:bg-[color-mix(in_srgb,var(--success)_90%,transparent)]',
+      selected: 'bg-[color-mix(in_srgb,var(--primary)_15%,transparent)] text-[var(--foreground)] border border-[var(--primary)] hover:bg-[color-mix(in_srgb,var(--primary)_20%,transparent)]'
     };
 
     const sizes = {
-      sm: 'px-3 py-1.5 text-xs rounded-md',
-      md: 'px-4 py-2 text-sm rounded-lg',
-      lg: 'px-6 py-3 text-base rounded-lg'
+      sm: 'px-3 py-1.5 text-sm',
+      md: 'px-4 py-2 text-sm',
+      lg: 'px-6 py-3 text-base'
     };
 
     return (
       <button
+        ref={ref}
         className={cn(
-          baseStyles,
+          'inline-flex items-center justify-center rounded-md font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-[var(--primary)] focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
           variants[variant],
           sizes[size],
           className
         )}
-        ref={ref}
         {...props}
       />
     );

src/components/ui/Input.tsx

@@ -2,39 +2,27 @@ import { InputHTMLAttributes, forwardRef } from 'react';
 import { cn } from '@/lib/utils';
 
 interface InputProps extends InputHTMLAttributes<HTMLInputElement> {
-  label?: string;
-  error?: string;
+  variant?: 'default' | 'error';
 }
 
 const Input = forwardRef<HTMLInputElement, InputProps>(
-  ({ className, label, error, ...props }, ref) => {
+  ({ className, variant = 'default', type, ...props }, ref) => {
+    const variants = {
+      default: 'border border-[var(--border)]/50 bg-[var(--input)] text-[var(--foreground)] placeholder:text-[var(--muted-foreground)] focus:border-[var(--primary)]/70 focus:ring-1 focus:ring-[var(--primary)]/20',
+      error: 'border border-[var(--destructive)]/50 bg-[var(--input)] text-[var(--foreground)] placeholder:text-[var(--muted-foreground)] focus:border-[var(--destructive)]/70 focus:ring-1 focus:ring-[var(--destructive)]/20'
+    };
+
     return (
-      <div className="space-y-2">
-        {label && (
-          <label className="block text-sm font-mono font-medium text-[var(--muted-foreground)] uppercase tracking-wider">
-            {label}
-          </label>
-        )}
       <input
+        type={type}
         className={cn(
-            'w-full px-3 py-2 bg-[var(--input)] border border-[var(--border)]/50 rounded-lg',
-            'text-[var(--foreground)] font-mono text-sm placeholder-[var(--muted-foreground)]',
-            'focus:outline-none focus:ring-2 focus:ring-[var(--primary)]/50 focus:border-[var(--primary)]/50',
-            'hover:border-[var(--border)] transition-all duration-200',
-            'backdrop-blur-sm',
-            error && 'border-[var(--destructive)]/50 focus:ring-[var(--destructive)]/50 focus:border-[var(--destructive)]/50',
+          'flex h-10 w-full rounded-md px-3 py-2 text-sm file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none disabled:cursor-not-allowed disabled:opacity-50 transition-colors',
+          variants[variant],
           className
         )}
         ref={ref}
         {...props}
       />
-        {error && (
-          <p className="text-xs font-mono text-[var(--destructive)] flex items-center gap-1">
-            <span className="text-[var(--destructive)]">⚠</span>
-            {error}
-          </p>
-        )}
-      </div>
     );
   }
 );

src/components/ui/StyledCard.tsx

@@ -0,0 +1,49 @@
+import { HTMLAttributes, forwardRef } from 'react';
+import { cn } from '@/lib/utils';
+
+interface StyledCardProps extends HTMLAttributes<HTMLDivElement> {
+  variant?: 'default' | 'outline' | 'elevated' | 'bordered' | 'column';
+  color?: 'default' | 'primary' | 'success' | 'destructive' | 'accent' | 'purple' | 'yellow' | 'green' | 'blue' | 'gray';
+}
+
+const StyledCard = forwardRef<HTMLDivElement, StyledCardProps>(
+  ({ className, variant = 'default', color = 'default', ...props }, ref) => {
+    const variants = {
+      default: 'bg-[var(--card)]/50 border border-[var(--border)]/50',
+      outline: 'bg-transparent border border-[var(--border)]',
+      elevated: 'bg-[var(--card)]/80 border border-[var(--border)]/50 shadow-lg shadow-[var(--card)]/20',
+      bordered: 'bg-[var(--card)]/50 border border-[var(--primary)]/30 shadow-[var(--primary)]/10 shadow-lg',
+      column: 'bg-[var(--card-column)] border border-[var(--border)]/50 shadow-lg shadow-[var(--card)]/20'
+    };
+
+    const colors = {
+      default: '',
+      primary: 'bg-[color-mix(in_srgb,var(--primary)_8%,transparent)] border-[color-mix(in_srgb,var(--primary)_25%,var(--border))] text-[var(--primary)]',
+      success: 'bg-[color-mix(in_srgb,var(--success)_8%,transparent)] border-[color-mix(in_srgb,var(--success)_25%,var(--border))] text-[var(--success)]',
+      destructive: 'bg-[color-mix(in_srgb,var(--destructive)_8%,transparent)] border-[color-mix(in_srgb,var(--destructive)_25%,var(--border))] text-[var(--destructive)]',
+      accent: 'bg-[color-mix(in_srgb,var(--accent)_8%,transparent)] border-[color-mix(in_srgb,var(--accent)_25%,var(--border))] text-[var(--accent)]',
+      purple: 'bg-[color-mix(in_srgb,var(--purple)_8%,transparent)] border-[color-mix(in_srgb,var(--purple)_25%,var(--border))] text-[var(--purple)]',
+      yellow: 'bg-[color-mix(in_srgb,var(--yellow)_8%,transparent)] border-[color-mix(in_srgb,var(--yellow)_25%,var(--border))] text-[var(--yellow)]',
+      green: 'bg-[color-mix(in_srgb,var(--green)_8%,transparent)] border-[color-mix(in_srgb,var(--green)_25%,var(--border))] text-[var(--green)]',
+      blue: 'bg-[color-mix(in_srgb,var(--blue)_8%,transparent)] border-[color-mix(in_srgb,var(--blue)_25%,var(--border))] text-[var(--blue)]',
+      gray: 'bg-[color-mix(in_srgb,var(--gray)_8%,transparent)] border-[color-mix(in_srgb,var(--gray)_25%,var(--border))] text-[var(--gray)]'
+    };
+
+    return (
+      <div
+        ref={ref}
+        className={cn(
+          'rounded-lg backdrop-blur-sm transition-all duration-200',
+          variants[variant],
+          colors[color],
+          className
+        )}
+        {...props}
+      />
+    );
+  }
+);
+
+StyledCard.displayName = 'StyledCard';
+
+export { StyledCard };

src/components/ui/index.ts

@@ -0,0 +1,11 @@
+// Composants UI de base
+export { Button } from './Button';
+export { Badge } from './Badge';
+export { Alert, AlertTitle, AlertDescription } from './Alert';
+export { Input } from './Input';
+export { StyledCard } from './StyledCard';
+
+// Composants existants
+export { Card, CardHeader, CardTitle, CardContent, CardFooter } from './Card';
+export { Header } from './Header';
+export { FontSizeToggle } from './FontSizeToggle';