Are the ai2 Motion calendars free?

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

Do they respect reduced motion?

Yes. Under prefers-reduced-motion, the month change is instant with no animation.

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 calendars

Five calendars that differ only in how the month grid animates when you navigate: a directional slide, a cross-fade, a pop, a spring settle and a 3D morph. Each is self-contained (no date library), keeps the month and selection state outside the animated subtree, and starts from a fixed month so the output stays deterministic.

CalendarMotion

Installation

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

Run the following command

npx shadcn@latest add @ai2/calendar-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/calendar-motion.tsx

"use client"

import * as React from "react"
import type { TargetAndTransition, Transition } from "motion/react"
import { motion, useReducedMotion } from "motion/react"
import { ChevronLeft, ChevronRight } from "lucide-react"

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

/* Motion calendar family: 5 month grids that animate the month change in different ways. Determinism: the visible month derives from a FIXED constant (January 2026), NOT from the clock. The month state is held OUTSIDE the grid; only the grid is remounted on the month key, so prev and next always work. Motion is disabled with useReducedMotion(). Colour comes ONLY from semantic tokens. */

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

const MONTHS = [
  "January",
  "February",
  "March",
  "April",
  "May",
  "June",
  "July",
  "August",
  "September",
  "October",
  "November",
  "December",
] as const

const WEEKDAYS = ["Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"] as const

const FIXED_MONTH = new Date(2026, 0, 1)

function startOfMonth(d: Date) {
  return new Date(d.getFullYear(), d.getMonth(), 1)
}

function addMonths(d: Date, n: number) {
  return new Date(d.getFullYear(), d.getMonth() + n, 1)
}

function isSameDay(a: Date | null | undefined, b: Date | null | undefined) {
  return (
    !!a &&
    !!b &&
    a.getFullYear() === b.getFullYear() &&
    a.getMonth() === b.getMonth() &&
    a.getDate() === b.getDate()
  )
}

function buildMonthGrid(month: Date): Date[] {
  const first = startOfMonth(month)
  const offset = (first.getDay() + 6) % 7
  const start = new Date(first)
  start.setDate(first.getDate() - offset)
  const days: Date[] = []
  for (let i = 0; i < 42; i++) {
    const d = new Date(start)
    d.setDate(start.getDate() + i)
    days.push(d)
  }
  return days
}

function toWeeks(days: Date[]): Date[][] {
  const weeks: Date[][] = []
  for (let i = 0; i < days.length; i += 7) weeks.push(days.slice(i, i + 7))
  return weeks
}

function ariaLabel(d: Date) {
  return `${MONTHS[d.getMonth()]} ${d.getDate()}, ${d.getFullYear()}`
}

/* Ay + yon durumu. Animasyonlu alt agacin DISINDA yasar. */
function useVisibleMonth(defaultMonth?: Date) {
  const [visible, setVisible] = React.useState<Date>(() =>
    startOfMonth(defaultMonth ?? FIXED_MONTH)
  )
  const [dir, setDir] = React.useState(0)
  const goPrev = React.useCallback(() => {
    setDir(-1)
    setVisible((m) => addMonths(m, -1))
  }, [])
  const goNext = React.useCallback(() => {
    setDir(1)
    setVisible((m) => addMonths(m, 1))
  }, [])
  return { visible, dir, goPrev, goNext }
}

/* Secili gun durumu da izgaranin disinda yasar; ay degisiminde kaybolmaz. */
function useSelected(defaultValue?: Date, onSelect?: (d: Date) => void) {
  const [selected, setSelected] = React.useState<Date | undefined>(defaultValue)
  const select = React.useCallback(
    (d: Date) => {
      setSelected(d)
      onSelect?.(d)
    },
    [onSelect]
  )
  return { selected, select }
}

const cellSizes: Record<StyledSize, string> = {
  sm: "size-8 text-xs",
  md: "size-9 text-sm",
  lg: "size-10 text-sm",
  xl: "size-11 text-base",
}

const navButton =
  "inline-flex size-7 items-center justify-center rounded-md text-muted-foreground outline-none transition-colors hover:bg-accent hover:text-accent-foreground focus-visible:ring-[3px] focus-visible:ring-ring/50 [&_svg]:size-4 [&_svg]:shrink-0 [&_i]:text-base [&_i]:leading-none"

const dayBase =
  "relative inline-flex items-center justify-center rounded-md font-normal text-foreground outline-none transition-colors duration-(--motion-fast) ease-(--motion-ease) hover:bg-accent hover:text-accent-foreground focus-visible:z-10 focus-visible:ring-[3px] focus-visible:ring-ring/50 motion-reduce:transition-none"

const daySelected =
  "bg-primary text-primary-foreground hover:bg-primary hover:text-primary-foreground"

const dayOutside = "text-muted-foreground/50"

interface MonthMotion {
  initial: TargetAndTransition
  animate: TargetAndTransition
  transition: Transition
}

export interface MotionCalendarProps {
  className?: string
  size?: StyledSize
  defaultMonth?: Date
  defaultValue?: Date
  onSelect?: (d: Date) => void
}

/* Shared body. buildMotion produces the month grid's entry animation from the direction; no animation at all is applied under reduced motion. */
function MotionCalendarBase({
  props,
  buildMotion,
  perspective,
}: {
  props: MotionCalendarProps
  buildMotion: (dir: number) => MonthMotion
  perspective?: boolean
}) {
  const { className, size = "md", defaultMonth, defaultValue, onSelect } = props
  const { visible, dir, goPrev, goNext } = useVisibleMonth(defaultMonth)
  const { selected, select } = useSelected(defaultValue, onSelect)
  const reduce = useReducedMotion()
  const titleId = React.useId()
  const weeks = toWeeks(buildMonthGrid(visible))
  const monthKey = `${visible.getFullYear()}-${visible.getMonth()}`
  const m = buildMotion(dir)

  return (
    <div
      data-slot="styled-calendar"
      role="grid"
      aria-labelledby={titleId}
      className={cn(
        "inline-block rounded-xl border border-border bg-card p-3 text-card-foreground",
        className
      )}
    >
      <div className="mb-2 flex items-center justify-between gap-2 px-1">
        <button type="button" onClick={goPrev} aria-label="Previous month" className={navButton}>
          <ChevronLeft />
        </button>
        <div id={titleId} aria-live="polite" className="text-sm font-medium">
          {MONTHS[visible.getMonth()]} {visible.getFullYear()}
        </div>
        <button type="button" onClick={goNext} aria-label="Next month" className={navButton}>
          <ChevronRight />
        </button>
      </div>
      <div role="row" className="grid grid-cols-7 gap-1">
        {WEEKDAYS.map((w) => (
          <div
            key={w}
            role="columnheader"
            className="flex items-center justify-center py-1 text-xs font-medium text-muted-foreground"
          >
            {w}
          </div>
        ))}
      </div>
      <div
        className="relative overflow-hidden"
        style={perspective && !reduce ? { perspective: "800px" } : undefined}
      >
        <motion.div
          key={monthKey}
          initial={reduce ? false : m.initial}
          animate={reduce ? {} : m.animate}
          transition={reduce ? { duration: 0 } : m.transition}
        >
          {weeks.map((week) => (
            <div key={week[0].toISOString()} role="row" className="grid grid-cols-7 gap-1">
              {week.map((d) => {
                const outside = d.getMonth() !== visible.getMonth()
                const isSelected = isSameDay(d, selected)
                return (
                  <button
                    key={d.toISOString()}
                    type="button"
                    role="gridcell"
                    aria-label={ariaLabel(d)}
                    aria-selected={isSelected}
                    onClick={() => select(d)}
                    className={cn(
                      dayBase,
                      cellSizes[size],
                      outside && dayOutside,
                      isSelected && daySelected
                    )}
                  >
                    {d.getDate()}
                  </button>
                )
              })}
            </div>
          ))}
        </motion.div>
      </div>
    </div>
  )
}

/* ---- 1. SlideCalendar: yon bilgisine gore yatay kayma ---- */

export function SlideCalendar(props: MotionCalendarProps) {
  return (
    <MotionCalendarBase
      props={props}
      buildMotion={(dir) => ({
        initial: { x: dir >= 0 ? "20%" : "-20%", opacity: 0 },
        animate: { x: 0, opacity: 1 },
        transition: { duration: 0.24, ease: "easeOut" },
      })}
    />
  )
}

/* ---- 2. FadeCalendar: an opacity transition only ---- */

export function FadeCalendar(props: MotionCalendarProps) {
  return (
    <MotionCalendarBase
      props={props}
      buildMotion={() => ({
        initial: { opacity: 0 },
        animate: { opacity: 1 },
        transition: { duration: 0.28, ease: "easeOut" },
      })}
    />
  )
}

/* ---- 3. PopCalendar: kucukten normale olcek + opaklik ---- */

export function PopCalendar(props: MotionCalendarProps) {
  return (
    <MotionCalendarBase
      props={props}
      buildMotion={() => ({
        initial: { scale: 0.92, opacity: 0 },
        animate: { scale: 1, opacity: 1 },
        transition: { duration: 0.22, ease: "easeOut" },
      })}
    />
  )
}

/* ---- 4. SpringCalendar: yay fizigiyle dikey giris ---- */

export function SpringCalendar(props: MotionCalendarProps) {
  return (
    <MotionCalendarBase
      props={props}
      buildMotion={(dir) => ({
        initial: { y: dir >= 0 ? 18 : -18, opacity: 0 },
        animate: { y: 0, opacity: 1 },
        transition: { type: "spring" as const, stiffness: 320, damping: 24, mass: 0.7 },
      })}
    />
  )
}

/* ---- 5. MorphCalendar: 3B egilme + olcek ile donusum ---- */

export function MorphCalendar(props: MotionCalendarProps) {
  return (
    <MotionCalendarBase
      props={props}
      perspective
      buildMotion={(dir) => ({
        initial: { rotateX: dir >= 0 ? -16 : 16, scale: 0.96, opacity: 0 },
        animate: { rotateX: 0, scale: 1, opacity: 1 },
        transition: { duration: 0.32, 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 grid slides in from the direction you navigated.

January 2026

Fade

The grid cross-fades with no movement.

January 2026

Pop

The grid scales up from slightly small.

January 2026

Spring

The grid settles in vertically with spring physics.

January 2026

Morph

The grid tilts in 3D as the month changes.

January 2026

ai2 Motion calendars: 5 styled variations on the token system

The ai2 Motion calendars are a set of 5 decorative button variations from the styled layer of the @ai2 design system, built around month-grid calendars that animate the month change. 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 re-mounts the grid on every month change and animates it in. The styled layer is opt-in, so the dependency only lands if you use it; the base components stay lean. Under reduced motion, the month change is instant with no animation.

What is in the ai2 Motion calendars?

5 exports in one file: Slide, Fade, Pop, 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 re-mounts the grid on every month change and animates it in.
Reduced-motion aware: Under prefers-reduced-motion, the month change is instant with no animation.
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 calendars 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.

Motion calendars

Installation

Run the following command

Install dependencies

Copy the source

Variations

Slide

Fade

Pop

Spring

Morph

ai2 Motion calendars: 5 styled variations on the token system

What is in the ai2 Motion calendars?

Why use it

Features

Production tips

Works with the rest of ai2

FAQs

Are the ai2 Motion calendars free?

Do they use framer-motion?

Do they respect reduced motion?

Can I change the size?

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