Container Scroll

1"use client";
2 
3import {
4  motion,
5  useReducedMotion,
6  useScroll,
7  useSpring,
8  useTransform,
9} from "framer-motion";
10import * as React from "react";
11 
12export type ContainerScrollProps = React.HTMLAttributes<HTMLDivElement> & {
13  /** Headline block rendered above the device, rising as you scroll. */
14  header?: React.ReactNode;
15  /** The "screen" content — an image, video, or live UI. */
16  children: React.ReactNode;
17};
18 
19// SPRING.smooth — surfaces / shared-layout feel.
20const SPRING = { stiffness: 320, damping: 32, mass: 0.9 } as const;
21 
22const ContainerScroll = React.forwardRef<HTMLDivElement, ContainerScrollProps>(
23  ({ header, children, className, ...props }, ref) => {
24    const reduce = useReducedMotion();
25    const containerRef = React.useRef<HTMLDivElement>(null);
26    React.useImperativeHandle(
27      ref,
28      () => containerRef.current as HTMLDivElement,
29    );
30 
31    const { scrollYProgress } = useScroll({ target: containerRef });
32 
33    const rotateX = useSpring(
34      useTransform(scrollYProgress, [0, 1], [20, 0]),
35      SPRING,
36    );
37    const scale = useSpring(
38      useTransform(scrollYProgress, [0, 1], [1.05, 1]),
39      SPRING,
40    );
41    const translateY = useSpring(
42      useTransform(scrollYProgress, [0, 1], [0, -100]),
43      SPRING,
44    );
45 
46    const frame = (
47      <div className="mx-auto w-full max-w-5xl rounded-2xl border border-border bg-card p-2 shadow-2xl md:p-3">
48        <div className="aspect-[16/10] size-full overflow-hidden rounded-xl bg-muted [&>img]:size-full [&>img]:object-cover [&>video]:size-full [&>video]:object-cover">
49          {children}
50        </div>
51      </div>
52    );
53 
54    // Reduced motion: a calm, upright device with no scroll-driven transforms.
55    if (reduce) {
56      return (
57        <div
58          ref={containerRef}
59          data-slot="container-scroll"
60          className={`flex flex-col items-center px-4 py-16 ${className ?? ""}`}
61          {...props}
62        >
63          {header ? <div className="mb-10 text-center">{header}</div> : null}
64          {frame}
65        </div>
66      );
67    }
68 
69    return (
70      <div
71        ref={containerRef}
72        data-slot="container-scroll"
73        className={`relative flex h-[60rem] items-center justify-center p-4 md:h-[80rem] md:p-20 ${className ?? ""}`}
74        {...props}
75      >
76        <div className="relative w-full [perspective:1000px]">
77          {header ? (
78            <motion.div
79              style={{ translateY }}
80// … truncated