refactor: add link variant to Button component and enhance CallToAction and HomeDesign styling

- Added 'link' variant to Button with baseStyles and variantStyles for cyan, white, and dark colors
- Updated Button type definitions to include link variant with proper color options
- Refactored default variant/color logic to use explicit conditionals for type safety
- Changed outline variant border from single to border-2 and added font-semibold
- Updated outline variant hover states to include text

src/components/Button.tsx

@@ -5,7 +5,9 @@ const baseStyles = {
   solid:
     'inline-flex justify-center rounded-full py-2 px-5 text-sm md:text-base font-semibold transition-colors',
   outline:
-    'inline-flex justify-center bg-transparent rounded-full border py-[calc(--spacing(2)-1px)] px-[calc(--spacing(5)-1px)] text-sm md:text-base transition-colors',
+    'inline-flex justify-center bg-transparent font-semibold rounded-full  border border-2 py-[calc(--spacing(2)-1px)] px-[calc(--spacing(5)-1px)] text-sm md:text-base transition-colors',
+  link:
+    'inline-flex items-center text-sm md:text-base font-semibold transition-colors',
 }
 
 const variantStyles = {
@@ -18,8 +20,13 @@ const variantStyles = {
   },
   outline: {
     cyan: 'border-cyan-500 text-cyan-500',
-    gray: 'border-gray-300 text-gray-700 hover:border-cyan-500 active:border-cyan-500',
-    white: 'border-gray-300 text-white hover:border-cyan-500 active:border-cyan-500',
+    gray: 'border-gray-300 text-gray-600 hover:text-cyan-500 hover:border-cyan-500 active:border-cyan-500',
+    white: 'border-gray-300 text-white hover:text-cyan-500 hover:border-cyan-500 active:border-cyan-500',
+  },
+  link: {
+    cyan: 'text-cyan-400 underline hover:text-cyan-300',
+    white: 'text-white underline hover:text-cyan-300',
+    dark: 'text-gray-900 underline hover:text-cyan-500',
   },
 }
 
@@ -30,7 +37,11 @@ type ButtonProps = (
     }
   | {
       variant: 'outline'
-      color?: (keyof typeof variantStyles.outline) | 'cyan'
+      color?: keyof typeof variantStyles.outline
+    }
+  | {
+      variant: 'link'
+      color?: keyof typeof variantStyles.link
     }
 ) &
   (
@@ -43,16 +54,33 @@ type ButtonProps = (
   )
 
 export function Button({ className, as, ...props }: ButtonProps) {
-  props.variant ??= 'solid'
-  props.color ??= 'gray'
+  // Set safe defaults per variant so color always matches a valid palette key
+  if (!props.variant) {
+    props.variant = 'solid'
+  }
+
+  if (!props.color) {
+    if (props.variant === 'solid') {
+      props.color = 'gray'
+    } else if (props.variant === 'outline') {
+      props.color = 'gray'
+    } else if (props.variant === 'link') {
+      props.color = 'cyan'
+    }
+  }
+
+  const variant = props.variant
+  const color = props.color as string
 
   className = clsx(
-    baseStyles[props.variant],
-    props.variant === 'outline'
-      ? variantStyles.outline[props.color]
-      : props.variant === 'solid'
-        ? variantStyles.solid[props.color]
-        : undefined,
+    baseStyles[variant],
+    variant === 'outline'
+      ? variantStyles.outline[color as keyof typeof variantStyles.outline]
+      : variant === 'solid'
+        ? variantStyles.solid[color as keyof typeof variantStyles.solid]
+        : variant === 'link'
+          ? variantStyles.link[color as keyof typeof variantStyles.link]
+          : undefined,
     className,
   )