Horizontal Cards Code

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"use client";

import { useGSAP } from "@gsap/react";
import gsap from "gsap";
import { ScrollTrigger } from "gsap/ScrollTrigger";
import { useRef } from "react";

gsap.registerPlugin(useGSAP, ScrollTrigger);

const cardsData = [
  {
    id: "MOTION",
    title: "FLUID TIMELINES",
    borderColor: "#0c9367", // green
    btnBg: "bg-wtf-green text-white hover:bg-[#0a8059]",
    rotateStart: 6,
    leftPos: "left-[7.5%] md:left-[10vw]",
    tag: "[MOTION-01]",
    footerText: "TWEENLABS ENGINE",
  },
  {
    id: "NEO",
    title: "NEO BRUTALISM",
    borderColor: "#c53b3a", // red
    btnBg: "bg-wtf-red text-white hover:bg-[#aa3231]",
    rotateStart: -4,
    leftPos: "left-[7.5%] md:left-[30vw]",
    tag: "[STYLE-02]",
    footerText: "TWEENLABS DESIGN",
  },
  {
    id: "SCROLL",
    title: "SCROLL TRIGGERS",
    borderColor: "#3b82f6", // blue
    btnBg: "bg-wtf-blue text-white hover:bg-[#2563eb]",
    rotateStart: 5,
    leftPos: "left-[7.5%] md:left-[50vw]",
    tag: "[SCROLL-03]",
    footerText: "TWEENLABS TRIGGERS",
  },
  {
    id: "PHYSICS",
    title: "PHYSICS COLLIDERS",
    borderColor: "#f1b333", // yellow
    btnBg: "bg-wtf-yellow text-black hover:bg-[#d99f26]",
    rotateStart: -6,
    leftPos: "left-[7.5%] md:left-[70vw]",
    tag: "[PHYSICS-04]",
    footerText: "TWEENLABS COLLIDER",
  },
];

export default function AnimationFourPage() {
  const containerRef = useRef<HTMLDivElement>(null);
  const scrollSectionRef = useRef<HTMLDivElement>(null);

  useGSAP(
    () => {
      const scroller = containerRef.current?.closest("#main-scroller") || undefined;

      // Master timeline linked to vertical scroll pinning
      // Pinned section height is 4500px to ensure smooth scroll scrubbing
      const tl = gsap.timeline({
        scrollTrigger: {
          trigger: scrollSectionRef.current,
          scroller: scroller,
          pin: true,
          scrub: 0.6,
          start: "top top",
          end: "+=2200",
          invalidateOnRefresh: true,
        },
      });

      const cards = gsap.utils.toArray<HTMLElement>(".card-item");

      // Timeline Sequence:
      // 1. Staggered Entry: Cards enter from bottom one by one.
      // 2. Wait Phase: All cards stay on screen together, drifting slightly.
      // 3. Staggered Exit: Cards exit off-screen top one by one.
      cards.forEach((card, idx) => {
        const cardData = cardsData[idx];
        const startRot = cardData.rotateStart;

        // Stagger start times: Card 1 at 0s, Card 2 at 0.6s, Card 3 at 1.2s, Card 4 at 1.8s
        const entryStart = idx * 0.6;
        const entryDuration = 1.0;

        // All cards are fully entered by 2.8s. They all exit together at 3.0s as user scrolls.
        const holdStart = entryStart + entryDuration;
        const exitStart = 3.0; // All cards exit simultaneously
        const holdDuration = exitStart - holdStart;
        const exitDuration = 1.0;

        // 1. Entry: from below the viewport (110vh) up to the center (0)
        tl.fromTo(
          card,
          {
            y: "110vh",
            rotation: startRot + 15,
            opacity: 0,
            scale: 0.85,
          },
          {
            y: "0vh",
            rotation: startRot,
            opacity: 1,
            scale: 1,
            duration: entryDuration,
            ease: "power2.out",
          },
          entryStart,
        )
          // 2. Wait/Float Phase: subtle kinetic drift in the center
          .to(
            card,
            {
              y: "-8vh",
              rotation: startRot - 2,
              duration: holdDuration,
              ease: "none",
            },
            holdStart,
          )
          // 3. Exit: up and out off the top of the viewport (-110vh)
          .to(
            card,
            {
              y: "-110vh",
              rotation: startRot - 15,
              opacity: 0,
              scale: 0.85,
              duration: exitDuration,
              ease: "power2.in",
            },
            exitStart,
          );
      });

      // Continuous idle floating/bouncing effect for cards when standing still
      gsap.to(".card-inner", {
        y: "-10px",
        rotation: "1.5",
        duration: 2.2,
        ease: "sine.inOut",
        yoyo: true,
        repeat: -1,
        stagger: {
          each: 0.35,
          from: "random",
        },
      });

      // Recalculate ScrollTrigger parameters once fonts load
      const handleLoad = () => {
        ScrollTrigger.refresh();
      };
      window.addEventListener("load", handleLoad);

      if (document.fonts) {
        document.fonts.ready.then(() => {
          ScrollTrigger.refresh();
        });
      }

      const timer = setTimeout(() => {
        ScrollTrigger.refresh();
      }, 1500);

      return () => {
        window.removeEventListener("load", handleLoad);
        clearTimeout(timer);
      };
    },
    { scope: containerRef },
  );

  return (
    <div
      className="relative min-h-screen bg-[#1e1e1e] text-white overflow-x-hidden selection:bg-wtf-yellow selection:text-black"
      ref={containerRef}
    >
      {/* Dot Grid Background Overlay */}
      <div
        className="absolute inset-0 dot-grid pointer-events-none z-10"
        style={{ opacity: 0.05 }}
      />

      {/* Dashboard Back Link */}
      <div className="fixed left-6 top-6 z-50">
        <button
          onClick={() =>
            window.history.length > 1
              ? window.history.back()
              : (window.location.href = "/")
          }
          className="brutalist-btn bg-wtf-yellow text-black px-4 py-2 text-xs font-mono font-bold uppercase rounded-md cursor-pointer border-2 border-black shadow-[3px_3px_0px_#000]"
        >
          ← Back
        </button>
      </div>

      <div
        ref={scrollSectionRef}
        className="h-[calc(100vh-64px)] w-full flex items-center justify-center relative overflow-hidden"
      >
        {/* Absolute Cards container */}
        <div className="absolute inset-0 w-full h-full flex items-center justify-center pointer-events-none z-20">
          <div className="relative w-full h-[340px] md:h-[380px] lg:h-[420px]">
            {cardsData.map((card) => (
              <div
                key={card.id}
                className={`card-item absolute top-0 ${card.leftPos} w-[85%] md:w-[18vw] h-full transform will-change-transform pointer-events-auto`}
              >
                <div
                  className="card-inner w-full h-full border-4 bg-[#fbfaf7] rounded-3xl flex flex-col justify-between p-6 md:p-8 shadow-[8px_8px_0px_rgba(0,0,0,0.95)]"
                  style={{
                    borderColor: card.borderColor,
                  }}
                >
                  {/* Card Top Left logo */}
                  <div className="flex items-center gap-0.5 font-serif font-black text-xs md:text-sm uppercase text-black select-none">
                    <span className="text-[#c53b3a]">D</span>
                    <span className="text-[#f1b333]">E</span>
                    <span className="text-[#0c9367]">V</span>
                  </div>

                  {/* Card Center Content */}
                  <div className="flex-1 flex flex-col items-center justify-center text-center gap-6">
                    <h3 className="font-serif font-black text-xl md:text-2xl lg:text-3xl text-[#121212] leading-tight tracking-tight uppercase whitespace-normal px-2">
                      {card.title}
                    </h3>
                    <button
                      className={`brutalist-btn ${card.btnBg} px-6 py-2.5 rounded-full font-mono text-xs font-bold uppercase border-2 border-black shadow-[3px_3px_0px_#000] cursor-pointer`}
                    >
                      Learn More
                    </button>
                  </div>

                  {/* Card Bottom Right details */}
                  <div className="flex justify-between items-center w-full font-mono text-[9px] text-zinc-400">
                    <span>{card.tag}</span>
                    <span className="font-bold text-zinc-650 tracking-wider">
                      {card.footerText}
                    </span>
                  </div>
                </div>
              </div>
            ))}
          </div>
        </div>
      </div>
    </div>
  );
}