diff --git a/memento-note/app/globals.css b/memento-note/app/globals.css
index b888d86..2a2aa52 100644
--- a/memento-note/app/globals.css
+++ b/memento-note/app/globals.css
@@ -1222,23 +1222,42 @@ html.font-system * {
 }
 
 /* ============================================
-   Slash Command Menu
+   Slash Command Menu — Premium Design
    ============================================ */
 .notion-slash-menu {
   position: fixed;
   z-index: 9999;
   background: var(--popover);
   border: 1px solid var(--border);
-  border-radius: 8px;
-  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
-  padding: 4px;
-  min-width: 300px;
-  max-height: 340px;
+  border-radius: 12px;
+  box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
+  padding: 6px;
+  min-width: 320px;
+  max-height: 420px;
   overflow-y: auto;
   scrollbar-width: thin;
+  scrollbar-color: var(--border) transparent;
+  animation: slash-enter 0.12s ease;
+}
+@keyframes slash-enter {
+  from { opacity: 0; transform: translateY(-4px) scale(0.98); }
+  to   { opacity: 1; transform: translateY(0)   scale(1); }
 }
 .dark .notion-slash-menu {
-  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
+  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 2px 8px rgba(0,0,0,0.3);
+}
+
+/* Header hint */
+.notion-slash-header {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  padding: 5px 10px 6px;
+  font-size: 10px;
+  color: var(--muted-foreground);
+  border-bottom: 1px solid var(--border);
+  margin-bottom: 4px;
+  opacity: 0.7;
 }
 
 .notion-slash-section + .notion-slash-section {
@@ -1248,62 +1267,79 @@ html.font-system * {
 }
 
 .notion-slash-label {
-  padding: 6px 8px 2px;
-  font-size: 11px;
-  font-weight: 600;
+  padding: 6px 10px 3px;
+  font-size: 10.5px;
+  font-weight: 700;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
   color: var(--muted-foreground);
   user-select: none;
 }
+.notion-slash-label-ai {
+  color: oklch(0.55 0.15 270);
+}
+.dark .notion-slash-label-ai {
+  color: oklch(0.72 0.15 270);
+}
 
 .notion-slash-item {
   display: flex;
   align-items: center;
-  gap: 8px;
+  gap: 10px;
   width: 100%;
-  padding: 4px 8px;
+  padding: 6px 8px;
   border: none;
   background: transparent;
-  border-radius: 4px;
+  border-radius: 7px;
   cursor: pointer;
   text-align: left;
   color: var(--foreground);
-  transition: background 0.1s ease;
+  transition: background 0.1s ease, transform 0.08s ease;
 }
 .notion-slash-item:hover,
 .notion-slash-item-selected {
   background: var(--accent);
 }
+.notion-slash-item-selected {
+  transform: none;
+}
 
 .notion-slash-icon {
   display: flex;
   align-items: center;
   justify-content: center;
-  width: 20px;
-  height: 20px;
+  width: 30px;
+  height: 30px;
   border: 1px solid var(--border);
-  border-radius: 4px;
+  border-radius: 7px;
   background: var(--background);
-  color: var(--muted-foreground);
+  color: var(--foreground);
   flex-shrink: 0;
+  transition: background 0.1s ease;
 }
-.notion-slash-icon-ai {
-  background: oklch(0.95 0.05 270);
-  border-color: oklch(0.8 0.08 270);
-  color: oklch(0.55 0.15 270);
-}
-.dark .notion-slash-icon-ai {
-  background: oklch(0.25 0.05 270);
-  border-color: oklch(0.4 0.08 270);
-  color: oklch(0.75 0.15 270);
+.notion-slash-item-selected .notion-slash-icon,
+.notion-slash-item:hover .notion-slash-icon {
+  background: var(--popover);
 }
 
-.notion-slash-loading {
+.notion-slash-icon-ai {
+  background: oklch(0.95 0.04 270);
+  border-color: oklch(0.82 0.08 270);
+  color: oklch(0.52 0.18 270);
+}
+.dark .notion-slash-icon-ai {
+  background: oklch(0.22 0.05 270);
+  border-color: oklch(0.38 0.09 270);
+  color: oklch(0.75 0.16 270);
+}
+
+/* Stacked title + description */
+.notion-slash-content {
   display: flex;
-  align-items: center;
-  gap: 6px;
-  padding: 8px 10px;
-  font-size: 13px;
-  color: var(--muted-foreground);
+  flex-direction: column;
+  flex: 1;
+  min-width: 0;
+  gap: 1px;
 }
 
 .notion-slash-title {
@@ -1312,7 +1348,7 @@ html.font-system * {
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
-  flex: 0 1 auto;
+  line-height: 1.3;
 }
 .notion-slash-desc {
   font-size: 11px;
@@ -1320,8 +1356,29 @@ html.font-system * {
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
-  flex: 1 1 auto;
-  text-align: right;
+  line-height: 1.3;
+}
+
+/* Shortcut badge */
+.notion-slash-shortcut {
+  font-size: 10px;
+  font-family: ui-monospace, monospace;
+  background: var(--muted);
+  color: var(--muted-foreground);
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  padding: 1px 5px;
+  flex-shrink: 0;
+  white-space: nowrap;
+}
+
+.notion-slash-loading {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 12px;
+  font-size: 13px;
+  color: var(--muted-foreground);
 }
 
 /* ============================================
diff --git a/memento-note/components/rich-text-editor.tsx b/memento-note/components/rich-text-editor.tsx
index 2c9b798..2ce7ad6 100644
--- a/memento-note/components/rich-text-editor.tsx
+++ b/memento-note/components/rich-text-editor.tsx
@@ -23,6 +23,7 @@ import {
   Quote, CodeXml, Minus, ImageIcon, Type, Highlighter, Link as LinkIcon,
   Sparkles, Wand2, Scissors, Lightbulb, X, Check, ExternalLink,
   FileText, Pilcrow, MessageSquare, AlignLeft, AlignCenter, AlignRight,
+  Superscript as SuperscriptIcon, Subscript as SubscriptIcon, Expand,
 } from 'lucide-react'
 import { cn } from '@/lib/utils'
 
@@ -42,6 +43,7 @@ type SlashItem = {
   description: string
   icon: typeof Bold
   category?: string
+  shortcut?: string
   isImage?: boolean
   isAi?: boolean
   aiOption?: 'clarify' | 'shorten' | 'improve'
@@ -49,20 +51,26 @@ type SlashItem = {
 }
 
 const slashCommands: SlashItem[] = [
-  { title: 'Text', description: 'Just start writing with plain text', icon: Pilcrow, category: 'Basic blocks', command: (e) => e.chain().focus().setParagraph().run() },
-  { title: 'Heading 1', description: 'Big section heading', icon: Heading1, category: 'Basic blocks', command: (e) => e.chain().focus().toggleHeading({ level: 1 }).run() },
-  { title: 'Heading 2', description: 'Medium section heading', icon: Heading2, category: 'Basic blocks', command: (e) => e.chain().focus().toggleHeading({ level: 2 }).run() },
-  { title: 'Heading 3', description: 'Small section heading', icon: Heading3, category: 'Basic blocks', command: (e) => e.chain().focus().toggleHeading({ level: 3 }).run() },
-  { title: 'Bullet List', description: 'Create a simple bullet list', icon: List, category: 'Basic blocks', command: (e) => e.chain().focus().toggleBulletList().run() },
-  { title: 'Numbered List', description: 'Create a list with numbering', icon: ListOrdered, category: 'Basic blocks', command: (e) => e.chain().focus().toggleOrderedList().run() },
-  { title: 'To-do List', description: 'Track tasks with checkboxes', icon: CheckSquare, category: 'Basic blocks', command: (e) => e.chain().focus().toggleTaskList().run() },
-  { title: 'Quote', description: 'Capture a quote', icon: Quote, category: 'Basic blocks', command: (e) => e.chain().focus().toggleBlockquote().run() },
-  { title: 'Code Block', description: 'Capture a code snippet', icon: CodeXml, category: 'Basic blocks', command: (e) => e.chain().focus().toggleCodeBlock().run() },
-  { title: 'Divider', description: 'Visually divide blocks', icon: Minus, category: 'Basic blocks', command: (e) => e.chain().focus().setHorizontalRule().run() },
-  { title: 'Image', description: 'Embed an image from URL', icon: ImageIcon, category: 'Media', isImage: true, command: () => {} },
-  { title: 'Clarify', description: 'Make text clearer and easier to understand', icon: Lightbulb, category: 'AI', isAi: true, aiOption: 'clarify', command: () => {} },
-  { title: 'Shorten', description: 'Make text more concise', icon: Scissors, category: 'AI', isAi: true, aiOption: 'shorten', command: () => {} },
-  { title: 'Improve', description: 'Improve writing style and flow', icon: Wand2, category: 'AI', isAi: true, aiOption: 'improve', command: () => {} },
+  { title: 'Text', description: 'Plain paragraph', icon: Pilcrow, category: 'Basic blocks', shortcut: '¶', command: (e) => e.chain().focus().setParagraph().run() },
+  { title: 'Heading 1', description: 'Big section heading', icon: Heading1, category: 'Basic blocks', shortcut: '#', command: (e) => e.chain().focus().toggleHeading({ level: 1 }).run() },
+  { title: 'Heading 2', description: 'Medium section heading', icon: Heading2, category: 'Basic blocks', shortcut: '##', command: (e) => e.chain().focus().toggleHeading({ level: 2 }).run() },
+  { title: 'Heading 3', description: 'Small section heading', icon: Heading3, category: 'Basic blocks', shortcut: '###', command: (e) => e.chain().focus().toggleHeading({ level: 3 }).run() },
+  { title: 'Bullet List', description: 'Unordered list', icon: List, category: 'Basic blocks', shortcut: '-', command: (e) => e.chain().focus().toggleBulletList().run() },
+  { title: 'Numbered List', description: 'Ordered numbered list', icon: ListOrdered, category: 'Basic blocks', shortcut: '1.', command: (e) => e.chain().focus().toggleOrderedList().run() },
+  { title: 'To-do List', description: 'Checkboxes for tasks', icon: CheckSquare, category: 'Basic blocks', shortcut: '[]', command: (e) => e.chain().focus().toggleTaskList().run() },
+  { title: 'Quote', description: 'Capture a quote', icon: Quote, category: 'Basic blocks', shortcut: '>', command: (e) => e.chain().focus().toggleBlockquote().run() },
+  { title: 'Code Block', description: 'Code snippet', icon: CodeXml, category: 'Basic blocks', shortcut: '```', command: (e) => e.chain().focus().toggleCodeBlock().run() },
+  { title: 'Divider', description: 'Horizontal separator', icon: Minus, category: 'Basic blocks', shortcut: '---', command: (e) => e.chain().focus().setHorizontalRule().run() },
+  { title: 'Image', description: 'Embed image from URL', icon: ImageIcon, category: 'Media', isImage: true, command: () => {} },
+  { title: 'Align Left', description: 'Align text left', icon: AlignLeft, category: 'Formatting', command: (e) => e.chain().focus().setTextAlign('left').run() },
+  { title: 'Align Center', description: 'Center text', icon: AlignCenter, category: 'Formatting', command: (e) => e.chain().focus().setTextAlign('center').run() },
+  { title: 'Align Right', description: 'Align text right', icon: AlignRight, category: 'Formatting', command: (e) => e.chain().focus().setTextAlign('right').run() },
+  { title: 'Superscript', description: 'Raise text above baseline', icon: SuperscriptIcon, category: 'Formatting', command: (e) => e.chain().focus().toggleSuperscript().run() },
+  { title: 'Subscript', description: 'Lower text below baseline', icon: SubscriptIcon, category: 'Formatting', command: (e) => e.chain().focus().toggleSubscript().run() },
+  { title: 'Clarifier', description: 'Rendre le texte plus clair', icon: Lightbulb, category: 'IA Note', isAi: true, aiOption: 'clarify', command: () => {} },
+  { title: 'Raccourcir', description: 'Condenser le texte', icon: Scissors, category: 'IA Note', isAi: true, aiOption: 'shorten', command: () => {} },
+  { title: 'Améliorer', description: 'Améliorer le style', icon: Wand2, category: 'IA Note', isAi: true, aiOption: 'improve', command: () => {} },
+  { title: 'Développer', description: 'Élaborer et enrichir le texte', icon: Expand, category: 'IA Note', isAi: true, aiOption: 'clarify', command: () => {} },
 ]
 
 async function aiReformulate(text: string, option: 'clarify' | 'shorten' | 'improve'): Promise<string> {
@@ -417,30 +425,44 @@ function SlashCommandMenu({ editor, onInsertImage }: { editor: Editor; onInsertI
 
   return (
     <div ref={menuRef} className="notion-slash-menu" style={{ top: coords.top, left: coords.left }} onClick={(e) => e.stopPropagation()}>
+      {/* Header hint */}
+      <div className="notion-slash-header">
+        <Sparkles className="w-3 h-3" />
+        <span>Blocs — utilisez ↑↓ pour naviguer, Entrée pour insérer</span>
+      </div>
       {aiLoading && (
         <div className="notion-slash-loading">
           <Sparkles className="w-3.5 h-3.5 animate-spin" />
-          <span>AI is thinking...</span>
+          <span>IA Note réfléchit...</span>
         </div>
       )}
       {!aiLoading && Object.entries(categories).map(([cat, items]) => (
         <div key={cat} className="notion-slash-section">
-          <div className="notion-slash-label">{cat}</div>
+          <div className={cn('notion-slash-label', cat === 'IA Note' && 'notion-slash-label-ai')}>
+            {cat === 'IA Note' && <Sparkles className="w-3 h-3 inline mr-1" />}
+            {cat}
+          </div>
           {items.map((item) => {
             flatIndex++
             const idx = flatIndex
+            const isSelected = idx === selectedIndex
             return (
               <button
                 key={item.title}
-                className={cn('notion-slash-item', idx === selectedIndex && 'notion-slash-item-selected')}
+                className={cn('notion-slash-item', isSelected && 'notion-slash-item-selected')}
                 onClick={() => handleSelect(item)}
                 onMouseEnter={() => setSelectedIndex(idx)}
               >
                 <div className={cn('notion-slash-icon', item.isAi && 'notion-slash-icon-ai')}>
-                  <item.icon className="w-3 h-3" />
+                  <item.icon className="w-4 h-4" />
                 </div>
-                <span className="notion-slash-title">{item.title}</span>
-                <span className="notion-slash-desc">{item.description}</span>
+                <div className="notion-slash-content">
+                  <span className="notion-slash-title">{item.title}</span>
+                  <span className="notion-slash-desc">{item.description}</span>
+                </div>
+                {item.shortcut && (
+                  <span className="notion-slash-shortcut">{item.shortcut}</span>
+                )}
               </button>
             )
           })}