refactor: update EmptyStateCard component for improved layout and functionality

- Removed unused props and adjusted styles for a more compact and centered design.
- Enhanced the display of the icon, title, and description for better visibility.
- Updated keyboard shortcut hint and AI suggestion action for improved user interaction.
- Refined dismiss/minimize controls to appear on hover, enhancing the user experience.

apps/ui/src/components/views/board-view/components/empty-state-card.tsx

@@ -45,13 +45,10 @@ interface EmptyStateCardProps {
 
 export const EmptyStateCard = memo(function EmptyStateCard({
   columnId,
-  columnTitle,
   addFeatureShortcut,
   isFilteredEmpty = false,
   isReadOnly = false,
   onAiSuggest,
-  opacity = 100,
-  glassmorphism = true,
   customConfig,
 }: EmptyStateCardProps) {
   const [isDismissed, setIsDismissed] = useState(false);
@@ -70,19 +67,17 @@ export const EmptyStateCard = memo(function EmptyStateCard({
   const showActions = !isReadOnly && !isFilteredEmpty;
   const showShortcut = columnId === 'backlog' && addFeatureShortcut && showActions;
 
-  // Minimized state - compact indicator
+  // Minimized state - compact centered indicator
   if (isMinimized) {
     return (
       <button
         onClick={() => setIsMinimized(false)}
         className={cn(
-          'w-full p-3 rounded-lg',
-          'border-2 border-dashed border-border/40',
-          'bg-card/30 hover:bg-card/50',
-          'transition-all duration-200 ease-out',
+          'w-full h-full min-h-[120px] flex-1',
           'flex items-center justify-center gap-2',
-          'text-muted-foreground/60 hover:text-muted-foreground',
+          'text-muted-foreground/40 hover:text-muted-foreground/60',
           'cursor-pointer group',
+          'transition-colors duration-200',
           'animate-in fade-in duration-300'
         )}
         data-testid={`empty-state-minimized-${columnId}`}
@@ -104,114 +99,79 @@ export const EmptyStateCard = memo(function EmptyStateCard({
   return (
     <div
       className={cn(
-        'relative rounded-xl overflow-hidden',
-        'border-2 border-dashed border-border/50',
+        'w-full h-full min-h-[200px] flex-1',
+        'flex flex-col items-center justify-center',
+        'text-center px-4',
         'transition-all duration-300 ease-out',
-        'animate-in fade-in slide-in-from-top-2 duration-300',
-        'hover:border-border/70'
+        'animate-in fade-in duration-300',
+        'group'
       )}
       data-testid={`empty-state-card-${columnId}`}
     >
-      {/* Background with opacity */}
-      <div
-        className={cn('absolute inset-0 bg-card/50 -z-10', glassmorphism && 'backdrop-blur-sm')}
-        style={{ opacity: opacity / 100 }}
-      />
-
-      {/* Dismiss/Minimize controls */}
-      <div className="absolute top-2 right-2 flex items-center gap-1 z-10">
+      {/* Dismiss/Minimize controls - appears on hover */}
+      <div className="absolute top-2 right-2 flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity">
         <button
           onClick={() => setIsMinimized(true)}
-          className="p-1 rounded-md text-muted-foreground/40 hover:text-muted-foreground hover:bg-muted/50 transition-colors"
+          className="p-1 rounded-md text-muted-foreground/30 hover:text-muted-foreground/60 transition-colors"
           title="Minimize guidance"
         >
-          <EyeOff className="w-3.5 h-3.5" />
+          <EyeOff className="w-3 h-3" />
         </button>
         <button
           onClick={() => setIsDismissed(true)}
-          className="p-1 rounded-md text-muted-foreground/40 hover:text-muted-foreground hover:bg-muted/50 transition-colors"
+          className="p-1 rounded-md text-muted-foreground/30 hover:text-muted-foreground/60 transition-colors"
           title="Dismiss"
         >
-          <X className="w-3.5 h-3.5" />
+          <X className="w-3 h-3" />
         </button>
       </div>
 
-      <div className="p-4 space-y-4">
-        {/* Header with icon */}
-        <div className="flex items-start gap-3">
-          <div
-            className={cn(
-              'w-10 h-10 rounded-lg flex items-center justify-center shrink-0',
-              'bg-primary/10 text-primary/70'
-            )}
-          >
-            <IconComponent className="w-5 h-5" />
-          </div>
-          <div className="flex-1 min-w-0 pt-0.5">
-            <h4 className="font-medium text-sm text-foreground/90 mb-1">
-              {isFilteredEmpty ? 'No Matching Items' : config.title}
-            </h4>
-            <p className="text-xs text-muted-foreground/70 leading-relaxed">
-              {isFilteredEmpty
-                ? 'No features match your current filters. Try adjusting your filter criteria.'
-                : config.description}
-            </p>
-          </div>
-        </div>
-
-        {/* Keyboard shortcut hint */}
-        {showShortcut && (
-          <div className="flex items-center gap-2 py-2 px-3 rounded-lg bg-muted/30 border border-border/30">
-            <span className="text-xs text-muted-foreground/70">
-              {config.shortcutHint || 'Press'}
-            </span>
-            <Kbd className="bg-background/80 border border-border/50 px-2 py-0.5 font-semibold">
-              {formatShortcut(addFeatureShortcut, true)}
-            </Kbd>
-            <span className="text-xs text-muted-foreground/70">to add a feature</span>
-          </div>
-        )}
-
-        {/* Example card preview */}
-        {config.exampleCard && (
-          <div
-            className={cn(
-              'p-3 rounded-lg',
-              'border border-dashed border-border/30',
-              'bg-muted/20',
-              'opacity-60'
-            )}
-          >
-            <div className="text-[10px] uppercase tracking-wider text-muted-foreground/50 mb-1">
-              {config.exampleCard.category}
-            </div>
-            <div className="text-sm font-medium text-muted-foreground/60">
-              {config.exampleCard.title}
-            </div>
-          </div>
-        )}
-
-        {/* Action buttons */}
-        {showActions && config.primaryAction && config.primaryAction.actionType !== 'none' && (
-          <Button
-            variant="outline"
-            size="sm"
-            className="w-full h-8 text-xs border-dashed"
-            onClick={handlePrimaryAction}
-            data-testid={`empty-state-primary-action-${columnId}`}
-          >
-            <Wand2 className="w-3.5 h-3.5 mr-1.5" />
-            {config.primaryAction.label}
-          </Button>
-        )}
-
-        {/* Filtered empty state hint */}
-        {isFilteredEmpty && (
-          <p className="text-xs text-center text-muted-foreground/50 italic">
-            Clear filters to see all items
-          </p>
-        )}
+      {/* Icon */}
+      <div className="mb-3 text-muted-foreground/30">
+        <IconComponent className="w-8 h-8" />
       </div>
+
+      {/* Title */}
+      <h4 className="font-medium text-sm text-muted-foreground/50 mb-1">
+        {isFilteredEmpty ? 'No Matching Items' : config.title}
+      </h4>
+
+      {/* Description */}
+      <p className="text-xs text-muted-foreground/40 leading-relaxed max-w-[180px]">
+        {isFilteredEmpty ? 'No features match your current filters.' : config.description}
+      </p>
+
+      {/* Keyboard shortcut hint for backlog */}
+      {showShortcut && (
+        <div className="flex items-center gap-1.5 mt-3 text-muted-foreground/40">
+          <span className="text-xs">Press</span>
+          <Kbd className="bg-muted/30 border-0 px-1.5 py-0.5 text-[10px] text-muted-foreground/50">
+            {formatShortcut(addFeatureShortcut, true)}
+          </Kbd>
+          <span className="text-xs">to add</span>
+        </div>
+      )}
+
+      {/* AI Suggest action for backlog */}
+      {showActions && config.primaryAction && config.primaryAction.actionType === 'ai-suggest' && (
+        <Button
+          variant="ghost"
+          size="sm"
+          className="mt-4 h-7 text-xs text-muted-foreground/50 hover:text-muted-foreground/70"
+          onClick={handlePrimaryAction}
+          data-testid={`empty-state-primary-action-${columnId}`}
+        >
+          <Wand2 className="w-3 h-3 mr-1.5" />
+          {config.primaryAction.label}
+        </Button>
+      )}
+
+      {/* Filtered empty state hint */}
+      {isFilteredEmpty && (
+        <p className="text-[10px] mt-2 text-muted-foreground/30 italic">
+          Clear filters to see all items
+        </p>
+      )}
     </div>
   );
 });