Styled scroll area
Five scroll areas: thin, rounded, colored, overlay and both-axis. Each styles its own scrollbar (WebKit pseudo-elements plus scrollbar-width/color), needs no global stylesheet, and is sized.
Installation
The styled layer is free and installs like any other ai2 component.
Run the following command
npx shadcn@latest add @ai2/scroll-area-styledDependencies, the @ai2/tokens theme and the component file are installed together.
Copy the source
components/ui/scroll-area-styled.tsx"use client"
import type * as React from "react"
import { cn } from "@/lib/utils"
/* Scroll-area family: 5 decorative scroll areas. Colour comes ONLY from tokens. The scrollbar is styled with WebKit pseudo-element arbitrary utilities (self-contained; no global stylesheet needed), plus scrollbar-width and scrollbar-color for Firefox. size -> the viewport height. */
export type StyledSize = "sm" | "md" | "lg" | "xl"
const height: Record<StyledSize, string> = {
sm: "h-40",
md: "h-56",
lg: "h-72",
xl: "h-96",
}
const base = "w-full overflow-y-auto rounded-lg border border-border bg-surface-2 p-3"
/* Varsayilan icerik: kaydirmayi tetikleyecek kadar uzun, token-stilli satirlar. */
function DefaultRows({ count = 16 }: { count?: number }) {
return (
<div className="flex flex-col gap-2">
{Array.from({ length: count }).map((_, i) => (
<div
key={i}
className="flex items-center justify-between rounded-md border border-border bg-background px-3 py-2 text-sm text-foreground"
>
<span className="font-medium">Satir {i + 1}</span>
<span className="text-xs text-muted-foreground">token</span>
</div>
))}
</div>
)
}
type Props = {
className?: string
size?: StyledSize
children?: React.ReactNode
}
/* Thin: cok ince token kaydirma cubugu. */
export function ThinScrollArea({ className, size = "md", children }: Props) {
return (
<div
data-slot="styled-scroll-area"
className={cn(
base,
height[size],
"[scrollbar-width:thin] [scrollbar-color:var(--color-border)_transparent]",
"[&::-webkit-scrollbar]:w-1 [&::-webkit-scrollbar-track]:bg-transparent [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-border",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Rounded: dolgulu, hap seklinde yuvarlak token thumb. */
export function RoundedScrollArea({ className, size = "md", children }: Props) {
return (
<div
data-slot="styled-scroll-area"
className={cn(
base,
height[size],
"[scrollbar-width:thin] [scrollbar-color:var(--color-border)_transparent]",
"[&::-webkit-scrollbar]:w-3 [&::-webkit-scrollbar-track]:bg-transparent [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:border-4 [&::-webkit-scrollbar-thumb]:border-solid [&::-webkit-scrollbar-thumb]:border-transparent [&::-webkit-scrollbar-thumb]:bg-border [&::-webkit-scrollbar-thumb]:bg-clip-content",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Colored: primary token thumb. */
export function ColoredScrollArea({ className, size = "md", children }: Props) {
return (
<div
data-slot="styled-scroll-area"
className={cn(
base,
height[size],
"[scrollbar-width:thin] [scrollbar-color:var(--color-primary)_transparent]",
"[&::-webkit-scrollbar]:w-2 [&::-webkit-scrollbar-track]:bg-transparent [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-primary",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Overlay: the scrollbar rides over the content and appears on hover. */
export function OverlayScrollArea({ className, size = "md", children }: Props) {
return (
<div
data-slot="styled-scroll-area"
className={cn(
base,
height[size],
"[scrollbar-width:thin] [scrollbar-color:transparent_transparent] hover:[scrollbar-color:var(--color-border)_transparent]",
"[&::-webkit-scrollbar]:w-2 [&::-webkit-scrollbar]:bg-transparent [&::-webkit-scrollbar-track]:bg-transparent [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-transparent hover:[&::-webkit-scrollbar-thumb]:bg-border",
className
)}
style={{ overflowY: "overlay" } as React.CSSProperties}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Both: hem x hem y kaydirma cubugu stilli; icerik viewport'tan genis ve uzun. */
export function BothScrollArea({ className, size = "md", children }: Props) {
return (
<div
data-slot="styled-scroll-area"
className={cn(
base,
height[size],
"overflow-auto",
"[scrollbar-width:thin] [scrollbar-color:var(--color-border)_transparent]",
"[&::-webkit-scrollbar]:h-2 [&::-webkit-scrollbar]:w-2 [&::-webkit-scrollbar-track]:bg-transparent [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-border [&::-webkit-scrollbar-corner]:bg-transparent",
className
)}
>
{children ?? (
<div className="w-[150%]">
<DefaultRows count={20} />
</div>
)}
</div>
)
}Manual installs skip the @ai2/tokens theme, so add the token CSS from the theming guide or the tone colors will be missing.
Variations
5 takes on the same idea. Each is its own export, and every one accepts a size prop (sm, md, lg, xl) aligned to the base Button scale.
Thin
A very thin token scrollbar.
import { ThinScrollArea } from "@/components/ui/scroll-area-styled"
<ThinScrollArea />Rounded
A padded, pill-shaped rounded token thumb.
import { RoundedScrollArea } from "@/components/ui/scroll-area-styled"
<RoundedScrollArea />Colored
A primary-token scrollbar thumb.
import { ColoredScrollArea } from "@/components/ui/scroll-area-styled"
<ColoredScrollArea />Overlay
The scrollbar overlays the content and appears on hover.
import { OverlayScrollArea } from "@/components/ui/scroll-area-styled"
<OverlayScrollArea />Both
Both horizontal and vertical token scrollbars.
import { BothScrollArea } from "@/components/ui/scroll-area-styled"
<BothScrollArea />ai2 Styled scroll area: 5 styled variations on the token system
The ai2 Styled scroll area are a set of 5 decorative button variations from the styled layer of the @ai2 design system, built around custom-scrollbar scroll containers. They are free and MIT licensed, and every color comes from a semantic token, so they theme with the rest of ai2 in light and dark.
Motion runs on framer-motion: these are static; no motion library work is required. The styled layer is opt-in, so the dependency only lands if you use it; the base components stay lean. Under reduced motion, there is no motion to reduce.
What is in the ai2 Styled scroll area?
5 exports in one file: Thin, Rounded, Colored, Overlay and Both. Each renders a native button and takes a size prop (sm, md, lg, xl) aligned to the base Button. They are separate from the base Button on purpose: the base keeps its clean variant, tone and size axes, while the styled layer carries the effects.
You own the file. Copy the one category file and you have all 5 variations, with no runtime dependency on ai2 itself.
Why use it
- On-system by construction: Every color resolves to an ai2 semantic token, so the buttons follow your theme in light and dark with no extra work.
- Effect without the sprawl: The decorations live in a dedicated styled file, so the base Button keeps its clean, predictable API.
- Accessible and honest: Each renders a real button element, keeps a visible focus ring, and respects prefers-reduced-motion.
Features
- Token-driven color: No hardcoded hex or oklch; the look recolors with your theme tokens.
- framer-motion: these are static; no motion library work is required.
- Reduced-motion aware: Under prefers-reduced-motion, there is no motion to reduce.
- Size aligned to the base: Every variation takes sm, md, lg and xl matching the base Button height scale, so styled and base buttons line up in a row.
Production tips
- Use it for emphasis, not everywhere: Styled buttons draw the eye. Reserve them for the one action you want people to take on a screen, and use the base Button for the rest.
- Keep labels as verbs: The decoration adds weight, so a clear action label keeps the button scannable.
- Pick one variation per surface: The variations share a family; using two different ones in the same view competes for attention.
Works with the rest of ai2
The Styled scroll area sit alongside the base Button and the rest of the @ai2 registry. They share the same token file, so a styled action next to a base button or a badge stays visually consistent in both modes.