<nav>
  <a href="#">
    <span class="text">Animation</span>
    <div class="slide"></div>
  </a>
  <a href="#">
    <span class="text">Branding</span>
    <div class="slide"></div>
  </a>
  <a href="#">
    <span class="text">Illustration</span>
    <div class="slide"></div>
  </a>
</nav>



<div class="support">
  <a href="https://twitter.com/DevLoop01" target="_blank"><i class="fab fa-twitter-square"></i></a>
  <a href="https://dribbble.com/devloop01" target="_blank"><i class="fab fa-dribbble"></i></a>
</div>

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #141212;
  overflow: hidden;
}

nav {
  display: flex;
  justify-content: center;
  align-items: center;
  a {
    position: relative;
    text-decoration: none;
    font-family: "Montserrat";
    font-weight: bold;
    color: #5a5753;
    margin: 0 1rem;
    transition: text-shadow 300ms ease, color 300ms ease;

    .slide {
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      background: #4df9ff;
      transform: scaleX(0);

    }
    &.active {
      color: #4df9ff;
      text-shadow: 0 0 20px #4df9ff7c;
    }

    &:focus {
      outline: none;
      border: none;
    }
  }
}


.support{
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 10px;
  display: flex;
  a{
    margin: 0 10px;
    color: #fff;
    font-size: 1.8rem;
    backface-visibility: hidden;
    transition: all 150ms ease;
    &:hover{
      transform: scale(1.1);
    }
  }

}

console.clear();

const { gsap } = window;

let currentLink;
let currentIndex = 0;
const links = document.querySelectorAll("nav a");

links.forEach((link, index) => {
  link.addEventListener("click", (e) => {
    addActive(e, index);
  });
});

function addActive(e, i) {
  const target = e.currentTarget;
  if (target != currentLink) {
    let direction;
    if (currentIndex < i) direction = "right";
    else direction = "left";
    const slide = target.querySelector(".slide");

    gsap.timeline()
      .call(() => {
      links.forEach((link) => {
        link.classList.remove("active");
      });
    })
      .fromTo(
      slide,
      {
        transformOrigin: `${direction == "left" ? "right" : "left"} center`,
        scaleX: 0,
      },
      {
        delay: 0.1,
        duration: 0.25,
        scaleX: 1,
      }
    )
      .call(() => {
      target.classList.add("active");
    })
      .to(slide, {
      delay: 0.25,
      duration: 0.25,
      transformOrigin: `${direction} center`,
      scaleX: 0,
    });
    currentLink = target;
    currentIndex = i;
  }
}