Shadow scroll areas
Five scroll areas with an elevated, floating thumb: float, lift, deep, pill and edge. Each styles its own WebKit thumb with a token drop shadow, 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-shadowDependencies, the @ai2/tokens theme and the component file are installed together.
Copy the source
components/ui/scroll-area-shadow.tsx"use client"
import type * as React from "react"
import { cn } from "@/lib/utils"
/* Scroll-area shadow family: 5 decorative scroll areas. The thumb carries a
drop-shadow like a raised, floating chip (float, lift, deep, pill, edge). The
shadow and thumb colors come ONLY from tokens; alpha via color-mix. 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
}
/* Float: iceriden bosluklu, yumusak golgeli yuzen thumb. */
export function FloatShadowScrollArea({ 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-3.5 [&::-webkit-scrollbar-track]:bg-transparent",
"[&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:border-[3px] [&::-webkit-scrollbar-thumb]:border-solid [&::-webkit-scrollbar-thumb]:border-transparent [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_oklab,var(--color-foreground)_40%,transparent)] [&::-webkit-scrollbar-thumb]:bg-clip-content [&::-webkit-scrollbar-thumb]:shadow-[0_1px_4px_color-mix(in_oklab,var(--color-foreground)_25%,transparent)]",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Lift: daha yuksege kalkmis, uzun ofsetli golge. */
export function LiftShadowScrollArea({ 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-3.5 [&::-webkit-scrollbar-track]:bg-transparent",
"[&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:border-[3px] [&::-webkit-scrollbar-thumb]:border-solid [&::-webkit-scrollbar-thumb]:border-transparent [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_oklab,var(--color-foreground)_45%,transparent)] [&::-webkit-scrollbar-thumb]:bg-clip-content [&::-webkit-scrollbar-thumb]:shadow-[0_3px_8px_color-mix(in_oklab,var(--color-foreground)_30%,transparent)]",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Deep: koyu, genis bulanik derin golge. */
export function DeepShadowScrollArea({ 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-4 [&::-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-[color-mix(in_oklab,var(--color-foreground)_50%,transparent)] [&::-webkit-scrollbar-thumb]:bg-clip-content [&::-webkit-scrollbar-thumb]:shadow-[0_4px_12px_color-mix(in_oklab,var(--color-foreground)_45%,transparent)]",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Pill: cok yuvarlak, dolgulu hap thumb + yumusak golge. */
export function PillShadowScrollArea({ 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-4 [&::-webkit-scrollbar-track]:bg-transparent",
"[&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:border-[5px] [&::-webkit-scrollbar-thumb]:border-solid [&::-webkit-scrollbar-thumb]:border-transparent [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_oklab,var(--color-foreground)_42%,transparent)] [&::-webkit-scrollbar-thumb]:bg-clip-content [&::-webkit-scrollbar-thumb]:shadow-[0_2px_6px_color-mix(in_oklab,var(--color-foreground)_28%,transparent)]",
className
)}
>
{children ?? <DefaultRows />}
</div>
)
}
/* Edge: kenara yaslanan thumb + yonlu golge. */
export function EdgeShadowScrollArea({ 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-2.5 [&::-webkit-scrollbar-track]:bg-transparent",
"[&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_oklab,var(--color-foreground)_45%,transparent)] [&::-webkit-scrollbar-thumb]:shadow-[-2px_0_6px_color-mix(in_oklab,var(--color-foreground)_30%,transparent)]",
className
)}
>
{children ?? <DefaultRows />}
</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.
Float
A padded, floating thumb with a soft drop shadow.
import { FloatShadowScrollArea } from "@/components/ui/scroll-area-shadow"
<FloatShadowScrollArea />Lift
A thumb lifted higher with a longer offset shadow.
import { LiftShadowScrollArea } from "@/components/ui/scroll-area-shadow"
<LiftShadowScrollArea />Deep
A dark, wide, deeply blurred drop shadow.
import { DeepShadowScrollArea } from "@/components/ui/scroll-area-shadow"
<DeepShadowScrollArea />Pill
A very rounded, padded pill thumb with a soft shadow.
import { PillShadowScrollArea } from "@/components/ui/scroll-area-shadow"
<PillShadowScrollArea />Edge
A thumb flush to the edge with a directional shadow.
import { EdgeShadowScrollArea } from "@/components/ui/scroll-area-shadow"
<EdgeShadowScrollArea />ai2 Shadow scroll areas: 5 styled variations on the token system
The ai2 Shadow scroll areas are a set of 5 decorative button variations from the styled layer of the @ai2 design system, built around scroll containers with an elevated, floating scrollbar thumb. 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: the elevated thumb and shadow styling is pure CSS; 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, nothing animates; the areas still scroll and keep the floating thumb.
What is in the ai2 Shadow scroll areas?
5 exports in one file: Float, Lift, Deep, Pill and Edge. 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: the elevated thumb and shadow styling is pure CSS; no motion library work is required.
- Reduced-motion aware: Under prefers-reduced-motion, nothing animates; the areas still scroll and keep the floating thumb.
- 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 Shadow scroll areas 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.