diff --git a/app/globals.css b/app/globals.css
index 10c2d37..c6b7e5d 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -57,3 +57,38 @@
     @apply bg-background text-foreground;
   }
 }
+
+/* Smooth transitions for theme switching */
+* {
+  transition-property: background-color, border-color, color, fill, stroke;
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+  transition-duration: 200ms;
+}
+
+/* Disable transitions during theme switch to prevent flash */
+.theme-transitioning * {
+  transition: none !important;
+}
+
+/* Smooth scroll */
+html {
+  scroll-behavior: smooth;
+}
+
+/* Custom scrollbar */
+::-webkit-scrollbar {
+  width: 10px;
+  height: 10px;
+}
+
+::-webkit-scrollbar-track {
+  @apply bg-background;
+}
+
+::-webkit-scrollbar-thumb {
+  @apply bg-muted-foreground/20 rounded-lg;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  @apply bg-muted-foreground/30;
+}
diff --git a/app/page.tsx b/app/page.tsx
index a61c367..af27a83 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -1,41 +1,41 @@
 export default function Home() {
   return (
-    <main className="flex min-h-screen flex-col items-center justify-center p-24">
+    <main className="flex min-h-screen flex-col items-center justify-center p-8 md:p-24">
       <div className="max-w-5xl w-full space-y-8 text-center">
-        <h1 className="text-6xl font-bold bg-gradient-to-r from-pink-500 via-purple-500 to-blue-500 bg-clip-text text-transparent">
+        <h1 className="text-5xl md:text-6xl font-bold bg-gradient-to-r from-pink-500 via-purple-500 to-blue-500 bg-clip-text text-transparent animate-fade-in">
           Pastel UI
         </h1>
-        <p className="text-xl text-muted-foreground">
+        <p className="text-lg md:text-xl text-muted-foreground animate-slide-up">
           Modern web UI for color manipulation, palette generation, and accessibility analysis
         </p>
-        <div className="flex gap-4 justify-center">
+        <div className="flex flex-col sm:flex-row gap-4 justify-center animate-slide-up" style={{ animationDelay: '0.1s' }}>
           <a
             href="/playground"
-            className="px-6 py-3 bg-primary text-primary-foreground rounded-lg hover:opacity-90 transition-opacity"
+            className="px-6 py-3 bg-primary text-primary-foreground rounded-lg hover:scale-105 hover:shadow-lg transition-all duration-200"
           >
             Open Playground
           </a>
           <a
             href="/palettes"
-            className="px-6 py-3 bg-secondary text-secondary-foreground rounded-lg hover:opacity-90 transition-opacity"
+            className="px-6 py-3 bg-secondary text-secondary-foreground rounded-lg hover:scale-105 hover:shadow-lg transition-all duration-200"
           >
             Generate Palettes
           </a>
         </div>
         <div className="grid grid-cols-1 md:grid-cols-3 gap-6 mt-12">
-          <div className="p-6 border rounded-lg">
+          <div className="p-6 border rounded-lg bg-card hover:border-primary hover:shadow-lg transition-all duration-200 animate-scale-in" style={{ animationDelay: '0.2s' }}>
             <h3 className="text-lg font-semibold mb-2">Color Playground</h3>
             <p className="text-sm text-muted-foreground">
               Interactive color picker with multi-format support and real-time manipulation
             </p>
           </div>
-          <div className="p-6 border rounded-lg">
+          <div className="p-6 border rounded-lg bg-card hover:border-primary hover:shadow-lg transition-all duration-200 animate-scale-in" style={{ animationDelay: '0.3s' }}>
             <h3 className="text-lg font-semibold mb-2">Palette Generation</h3>
             <p className="text-sm text-muted-foreground">
               Create harmony palettes, distinct colors, and smooth gradients
             </p>
           </div>
-          <div className="p-6 border rounded-lg">
+          <div className="p-6 border rounded-lg bg-card hover:border-primary hover:shadow-lg transition-all duration-200 animate-scale-in" style={{ animationDelay: '0.4s' }}>
             <h3 className="text-lg font-semibold mb-2">Accessibility Tools</h3>
             <p className="text-sm text-muted-foreground">
               WCAG contrast checker and color blindness simulation
diff --git a/components/color/ColorSwatch.tsx b/components/color/ColorSwatch.tsx
index b877110..32083ea 100644
--- a/components/color/ColorSwatch.tsx
+++ b/components/color/ColorSwatch.tsx
@@ -40,18 +40,19 @@ export function ColorSwatch({
     <div className={cn('flex flex-col items-center gap-2', className)}>
       <button
         className={cn(
-          'relative rounded-lg ring-2 ring-border transition-all hover:scale-105 hover:ring-primary',
+          'relative rounded-lg ring-2 ring-border transition-all duration-200',
+          'hover:scale-110 hover:ring-primary hover:shadow-lg',
           'focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2',
-          'group',
+          'group active:scale-95',
           sizeClasses[size]
         )}
         style={{ backgroundColor: color }}
         onClick={onClick || handleCopy}
         aria-label={`Color ${color}`}
       >
-        <div className="absolute inset-0 flex items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity bg-black/20 rounded-lg">
+        <div className="absolute inset-0 flex items-center justify-center opacity-0 group-hover:opacity-100 transition-all duration-200 bg-black/30 rounded-lg backdrop-blur-sm">
           {copied ? (
-            <Check className="h-5 w-5 text-white" />
+            <Check className="h-5 w-5 text-white animate-scale-in" />
           ) : (
             <Copy className="h-5 w-5 text-white" />
           )}
diff --git a/components/ui/button.tsx b/components/ui/button.tsx
index eb82511..d6f50ec 100644
--- a/components/ui/button.tsx
+++ b/components/ui/button.tsx
@@ -11,15 +11,18 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
     return (
       <button
         className={cn(
-          'inline-flex items-center justify-center rounded-md font-medium transition-colors',
-          'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring',
+          'inline-flex items-center justify-center rounded-md font-medium',
+          'transition-all duration-200',
+          'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2',
           'disabled:pointer-events-none disabled:opacity-50',
+          'active:scale-95',
           {
-            'bg-primary text-primary-foreground hover:bg-primary/90': variant === 'default',
-            'border border-input bg-background hover:bg-accent hover:text-accent-foreground':
+            'bg-primary text-primary-foreground hover:bg-primary/90 hover:shadow-md':
+              variant === 'default',
+            'border border-input bg-background hover:bg-accent hover:text-accent-foreground hover:border-primary':
               variant === 'outline',
             'hover:bg-accent hover:text-accent-foreground': variant === 'ghost',
-            'bg-destructive text-destructive-foreground hover:bg-destructive/90':
+            'bg-destructive text-destructive-foreground hover:bg-destructive/90 hover:shadow-md':
               variant === 'destructive',
             'h-10 px-4 py-2': size === 'default',
             'h-9 px-3': size === 'sm',
diff --git a/components/ui/skeleton.tsx b/components/ui/skeleton.tsx
new file mode 100644
index 0000000..b94be6d
--- /dev/null
+++ b/components/ui/skeleton.tsx
@@ -0,0 +1,14 @@
+'use client';
+
+import { cn } from '@/lib/utils/cn';
+
+export interface SkeletonProps extends React.HTMLAttributes<HTMLDivElement> {}
+
+export function Skeleton({ className, ...props }: SkeletonProps) {
+  return (
+    <div
+      className={cn('animate-pulse rounded-md bg-muted', className)}
+      {...props}
+    />
+  );
+}
diff --git a/tailwind.config.ts b/tailwind.config.ts
index d6b6051..528ee0c 100644
--- a/tailwind.config.ts
+++ b/tailwind.config.ts
@@ -48,9 +48,14 @@ const config: Config = {
         sm: 'calc(var(--radius) - 4px)',
       },
       animation: {
-        'fade-in': 'fadeIn 0.2s ease-in',
-        'slide-up': 'slideUp 0.3s ease-out',
-        'slide-down': 'slideDown 0.3s ease-out',
+        'fade-in': 'fadeIn 0.3s ease-in-out',
+        'slide-up': 'slideUp 0.4s ease-out',
+        'slide-down': 'slideDown 0.4s ease-out',
+        'slide-in-right': 'slideInRight 0.3s ease-out',
+        'slide-in-left': 'slideInLeft 0.3s ease-out',
+        'scale-in': 'scaleIn 0.2s ease-out',
+        'bounce-gentle': 'bounceGentle 0.5s ease-in-out',
+        shimmer: 'shimmer 2s infinite',
       },
       keyframes: {
         fadeIn: {
@@ -58,13 +63,33 @@ const config: Config = {
           '100%': { opacity: '1' },
         },
         slideUp: {
-          '0%': { transform: 'translateY(10px)', opacity: '0' },
+          '0%': { transform: 'translateY(20px)', opacity: '0' },
           '100%': { transform: 'translateY(0)', opacity: '1' },
         },
         slideDown: {
-          '0%': { transform: 'translateY(-10px)', opacity: '0' },
+          '0%': { transform: 'translateY(-20px)', opacity: '0' },
           '100%': { transform: 'translateY(0)', opacity: '1' },
         },
+        slideInRight: {
+          '0%': { transform: 'translateX(-20px)', opacity: '0' },
+          '100%': { transform: 'translateX(0)', opacity: '1' },
+        },
+        slideInLeft: {
+          '0%': { transform: 'translateX(20px)', opacity: '0' },
+          '100%': { transform: 'translateX(0)', opacity: '1' },
+        },
+        scaleIn: {
+          '0%': { transform: 'scale(0.95)', opacity: '0' },
+          '100%': { transform: 'scale(1)', opacity: '1' },
+        },
+        bounceGentle: {
+          '0%, 100%': { transform: 'translateY(0)' },
+          '50%': { transform: 'translateY(-5px)' },
+        },
+        shimmer: {
+          '0%': { backgroundPosition: '-1000px 0' },
+          '100%': { backgroundPosition: '1000px 0' },
+        },
       },
     },
   },