Are the ai2 Motion selects free?

Yes. The whole styled layer is free and MIT licensed, like the component core.

Can I change the size?

Yes. Every variation takes a size prop of sm, md, lg or xl, aligned to the base Button height scale.

Motion selects

Five selects that keep one listbox anatomy and vary only the open and close motion: a slide, a pop, a plain fade, a loose spring and a vertical morph. Each is self-contained (no radix, no native select), sized, token-driven, and closes on outside click or Escape.

SelectMotion

Installation

The styled layer is free and installs like any other ai2 component.

Run the following command

npx shadcn@latest add @ai2/select-motion

Dependencies, the @ai2/tokens theme and the component file are installed together.

Install dependencies

npm install motion lucide-react

Copy the source

components/ui/select-motion.tsx

"use client"

import * as React from "react"
import { Check, ChevronDown } from "lucide-react"
import { AnimatePresence, motion, useReducedMotion } from "motion/react"

import { cn } from "@/lib/utils"

/* Motion select family: 5 self-contained single-selects. They all share the same
   listbox anatomy; the only difference is the option panel's ENTER/EXIT motion
   (slide, pop, fade, spring, morph). NO radix, NO native <select>, NO portal.
   The panel pins to its own trigger (a relative wrapper + an absolute panel), so 25
   examples side by side on a docs page are all positioned correctly. Keyboard:
   ArrowUp/Down moves the highlight, Enter selects, Escape closes and returns focus
   to the trigger. Color comes ONLY from tokens, via alpha color-mix. */

export type StyledSize = "sm" | "md" | "lg" | "xl"

const triggerHeight: Record<StyledSize, string> = {
  sm: "h-8 text-sm",
  md: "h-9 text-sm",
  lg: "h-10 text-base",
  xl: "h-12 text-base",
}

const panelWidth: Record<StyledSize, string> = {
  sm: "w-48",
  md: "w-56",
  lg: "w-64",
  xl: "w-72",
}

export interface StyledSelectOption {
  value: string
  label: string
}

export interface StyledSelectProps {
  className?: string
  size?: StyledSize
  placeholder?: string
  options?: StyledSelectOption[]
  value?: string
  defaultValue?: string
  onValueChange?: (v: string) => void
}

const defaultOptions: StyledSelectOption[] = [
  { value: "light", label: "Light" },
  { value: "dark", label: "Dark" },
  { value: "system", label: "System" },
  { value: "auto", label: "Automatic" },
]

const triggerBase =
  "inline-flex w-full shrink-0 select-none items-center justify-between gap-2 whitespace-nowrap rounded-lg border border-field-border bg-background px-3 font-medium text-foreground outline-none transition-colors hover:bg-accent hover:text-accent-foreground focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:cursor-not-allowed disabled:opacity-50 [&_svg]:size-4 [&_svg]:shrink-0 [&_i]:text-base [&_i]:leading-none"

const panelBase =
  "absolute left-0 top-full z-50 mt-1 max-h-72 min-w-48 overflow-auto rounded-xl border border-border bg-popover p-1.5 text-sm text-popover-foreground shadow-lg outline-none"

const optionBase =
  "flex w-full cursor-default select-none items-center gap-2.5 rounded-md px-3 py-2 text-left text-sm text-popover-foreground outline-none transition-colors hover:bg-accent hover:text-accent-foreground focus-visible:ring-[3px] focus-visible:ring-ring/50 aria-selected:bg-accent aria-selected:text-accent-foreground [&_svg]:size-4 [&_svg]:shrink-0 [&_i]:text-base [&_i]:leading-none"

interface PanelMotion {
  initial: Record<string, number>
  animate: Record<string, number>
  exit: Record<string, number>
  transition: Record<string, unknown>
  origin: string
}

/* Open state plus selected value plus highlight index. The state lives in the ROOT component, because the panel unmounts when it closes. */
function useSelectState(
  list: StyledSelectOption[],
  value: string | undefined,
  defaultValue: string | undefined,
  onValueChange: ((v: string) => void) | undefined,
) {
  const [open, setOpen] = React.useState(false)
  const [active, setActive] = React.useState(0)
  const [internal, setInternal] = React.useState<string | undefined>(defaultValue)
  const wrapperRef = React.useRef<HTMLDivElement>(null)
  const triggerRef = React.useRef<HTMLButtonElement>(null)

  const isControlled = value !== undefined
  const current = isControlled ? value : internal

  const close = React.useCallback(() => {
    setOpen(false)
    triggerRef.current?.focus()
  }, [])

  const select = React.useCallback(
    (next: string) => {
      if (!isControlled) setInternal(next)
      onValueChange?.(next)
      setOpen(false)
      triggerRef.current?.focus()
    },
    [isControlled, onValueChange],
  )

  React.useEffect(() => {
    if (!open) return
    const onPointer = (e: PointerEvent) => {
      const node = wrapperRef.current
      if (node && e.target instanceof Node && !node.contains(e.target)) setOpen(false)
    }
    window.addEventListener("pointerdown", onPointer)
    return () => window.removeEventListener("pointerdown", onPointer)
  }, [open])

  const indexOfCurrent = React.useCallback(() => {
    const i = list.findIndex((o) => o.value === current)
    return i < 0 ? 0 : i
  }, [list, current])

  const onKeyDown = React.useCallback(
    (e: React.KeyboardEvent) => {
      if (e.key === "Escape") {
        if (!open) return
        e.preventDefault()
        close()
        return
      }
      if (e.key === "ArrowDown" || e.key === "ArrowUp") {
        e.preventDefault()
        if (!open) {
          setOpen(true)
          setActive(indexOfCurrent())
          return
        }
        const dir = e.key === "ArrowDown" ? 1 : -1
        setActive((i) => (i + dir + list.length) % list.length)
        return
      }
      if (e.key === "Enter" || e.key === " ") {
        e.preventDefault()
        if (!open) {
          setOpen(true)
          setActive(indexOfCurrent())
          return
        }
        const opt = list[active]
        if (opt) select(opt.value)
      }
    },
    [open, close, indexOfCurrent, list, active, select],
  )

  return { open, setOpen, active, setActive, current, select, close, onKeyDown, wrapperRef, triggerRef }
}

function BaseMotionSelect({
  className,
  size = "md",
  placeholder = "Select...",
  options,
  value,
  defaultValue,
  onValueChange,
  panelMotion,
}: StyledSelectProps & { panelMotion: PanelMotion }) {
  const list = options ?? defaultOptions
  const reduce = useReducedMotion()
  const uid = React.useId()
  const listId = `${uid}-listbox`
  const optionId = (i: number) => `${uid}-option-${i}`

  const { open, setOpen, active, setActive, current, select, onKeyDown, wrapperRef, triggerRef } =
    useSelectState(list, value, defaultValue, onValueChange)

  const selectedLabel = list.find((o) => o.value === current)?.label
  const fade = {
    initial: { opacity: 0 },
    animate: { opacity: 1 },
    exit: { opacity: 0 },
  }
  const anim = reduce ? fade : panelMotion

  return (
    <div
      ref={wrapperRef}
      data-slot="styled-select"
      className={cn("relative inline-flex w-56 max-w-full", panelWidth[size], className)}
    >
      <button
        ref={triggerRef}
        type="button"
        data-slot="styled-select-trigger"
        role="combobox"
        aria-expanded={open}
        aria-haspopup="listbox"
        aria-controls={listId}
        aria-activedescendant={open ? optionId(active) : undefined}
        className={cn(triggerBase, triggerHeight[size])}
        onClick={() => {
          setActive(Math.max(0, list.findIndex((o) => o.value === current)))
          setOpen(!open)
        }}
        onKeyDown={onKeyDown}
      >
        <span className={cn("truncate", selectedLabel === undefined && "text-muted-foreground")}>
          {selectedLabel ?? placeholder}
        </span>
        <ChevronDown
          className={cn("shrink-0 opacity-70 transition-transform duration-200", open && "rotate-180")}
        />
      </button>

      <AnimatePresence>
        {open ? (
          <motion.div
            id={listId}
            role="listbox"
            data-slot="styled-select-content"
            className={cn(panelBase, panelWidth[size], !reduce && panelMotion.origin)}
            initial={anim.initial}
            animate={anim.animate}
            exit={anim.exit}
            transition={reduce ? { duration: 0.14 } : panelMotion.transition}
          >
            <div className="flex flex-col">
              {list.map((option, i) => {
                const isSelected = option.value === current
                return (
                  <button
                    key={option.value}
                    id={optionId(i)}
                    type="button"
                    role="option"
                    tabIndex={-1}
                    aria-selected={isSelected}
                    data-active={i === active ? "" : undefined}
                    className={cn(
                      optionBase,
                      i === active && "bg-accent text-accent-foreground",
                    )}
                    onPointerEnter={() => setActive(i)}
                    onClick={() => select(option.value)}
                  >
                    <span className="flex size-4 shrink-0 items-center justify-center text-primary">
                      {isSelected ? <Check /> : null}
                    </span>
                    <span className="truncate">{option.label}</span>
                  </button>
                )
              })}
            </div>
          </motion.div>
        ) : null}
      </AnimatePresence>
    </div>
  )
}

/* Slide: the panel slides downwards from under the trigger (tween). */
export function SlideSelect(props: StyledSelectProps) {
  return (
    <BaseMotionSelect
      {...props}
      panelMotion={{
        origin: "origin-top",
        initial: { opacity: 0, y: -10 },
        animate: { opacity: 1, y: 0 },
        exit: { opacity: 0, y: -10 },
        transition: { duration: 0.18, ease: "easeOut" },
      }}
    />
  )
}

/* Pop: it opens by bursting from small (a stiff spring, origin-top). */
export function PopSelect(props: StyledSelectProps) {
  return (
    <BaseMotionSelect
      {...props}
      panelMotion={{
        origin: "origin-top",
        initial: { opacity: 0, scale: 0.85 },
        animate: { opacity: 1, scale: 1 },
        exit: { opacity: 0, scale: 0.85 },
        transition: { type: "spring" as const, stiffness: 520, damping: 24 },
      }}
    />
  )
}

/* Fade: no movement, opacity only. */
export function FadeSelect(props: StyledSelectProps) {
  return (
    <BaseMotionSelect
      {...props}
      panelMotion={{
        origin: "origin-top",
        initial: { opacity: 0 },
        animate: { opacity: 1 },
        exit: { opacity: 0 },
        transition: { duration: 0.2, ease: "easeOut" },
      }}
    />
  )
}

/* Spring: dusuk damping ile yayli, hafif zipla. */
export function SpringSelect(props: StyledSelectProps) {
  return (
    <BaseMotionSelect
      {...props}
      panelMotion={{
        origin: "origin-top",
        initial: { opacity: 0, y: -14, scale: 0.96 },
        animate: { opacity: 1, y: 0, scale: 1 },
        exit: { opacity: 0, y: -14, scale: 0.96 },
        transition: { type: "spring" as const, stiffness: 320, damping: 14 },
      }}
    />
  )
}

/* Morph: it opens out of a vertical squash (a scaleY morph, origin-top). */
export function MorphSelect(props: StyledSelectProps) {
  return (
    <BaseMotionSelect
      {...props}
      panelMotion={{
        origin: "origin-top",
        initial: { opacity: 0, scaleY: 0.55, scaleX: 0.94 },
        animate: { opacity: 1, scaleY: 1, scaleX: 1 },
        exit: { opacity: 0, scaleY: 0.55, scaleX: 0.94 },
        transition: { duration: 0.24, ease: "easeOut" },
      }}
    />
  )
}

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.

Slide

The panel slides down from the trigger.

Pop

The panel pops open with a snappy spring.

Fade

The panel fades in with no movement.

Spring

The panel settles with a loose, bouncy spring.

Morph

The panel unfolds from a squashed state.

ai2 Motion selects: 5 styled variations on the token system

The ai2 Motion selects are a set of 5 decorative button variations from the styled layer of the @ai2 design system, built around single-choice selects that differ in panel motion. 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: framer-motion drives the panel enter and exit from the trigger. The styled layer is opt-in, so the dependency only lands if you use it; the base components stay lean. Under reduced motion, the transforms are skipped and the panel fades instantly.

What is in the ai2 Motion selects?

5 exports in one file: Slide, Pop, Fade, Spring and Morph. 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: framer-motion drives the panel enter and exit from the trigger.
Reduced-motion aware: Under prefers-reduced-motion, the transforms are skipped and the panel fades instantly.
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 Motion selects 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.