<button class="button">
  <span class="default">Send</span>
  <span class="success">
    <svg viewBox="0 0 16 16">
      <polyline points="3.75 9 7 12 13 5"></polyline>
    </svg>Sent
  </span>
  <svg class="trails" viewBox="0 0 33 64">
    <path d="M26,4 C28,13.3333333 29,22.6666667 29,32 C29,41.3333333 28,50.6666667 26,60"></path>
    <path d="M6,4 C8,13.3333333 9,22.6666667 9,32 C9,41.3333333 8,50.6666667 6,60"></path>
  </svg>
  <div class="plane">
    <div class="left"></div>
    <div class="right"></div>
  </div>
</button>

<!-- twitter / dribbble -->
<a class="dribbble" href="https://dribbble.com/ai" target="_blank"><img src="https://dribbble.com/assets/logo-small-2x-9fe74d2ad7b25fba0f50168523c15fda4c35534f9ea0b1011179275383035439.png" alt=""></a>
<a class="twitter" target="_blank" href="https://twitter.com/aaroniker_me"><svg xmlns="http://www.w3.org/2000/svg" width="72" height="72" viewBox="0 0 72 72"><path d="M67.812 16.141a26.246 26.246 0 0 1-7.519 2.06 13.134 13.134 0 0 0 5.756-7.244 26.127 26.127 0 0 1-8.313 3.176A13.075 13.075 0 0 0 48.182 10c-7.229 0-13.092 5.861-13.092 13.093 0 1.026.118 2.021.338 2.981-10.885-.548-20.528-5.757-26.987-13.679a13.048 13.048 0 0 0-1.771 6.581c0 4.542 2.312 8.551 5.824 10.898a13.048 13.048 0 0 1-5.93-1.638c-.002.055-.002.11-.002.162 0 6.345 4.513 11.638 10.504 12.84a13.177 13.177 0 0 1-3.449.457c-.846 0-1.667-.078-2.465-.231 1.667 5.2 6.499 8.986 12.23 9.09a26.276 26.276 0 0 1-16.26 5.606A26.21 26.21 0 0 1 4 55.976a37.036 37.036 0 0 0 20.067 5.882c24.083 0 37.251-19.949 37.251-37.249 0-.566-.014-1.134-.039-1.694a26.597 26.597 0 0 0 6.533-6.774z"></path></svg></a>

.button {
  --primary: #F6F8FF;
  --primary-dark: #D1D6EE;
  --primary-darkest: #8A91B4;
  --shadow: #{rgba(#000, .3)};
  --text: #362A89;
  --text-opacity: 1;
  --success: #EEECFF;
  --success-x: -12;
  --success-stroke: 14;
  --success-opacity: 0;
  --border-radius: 7;
  --overflow: hidden;
  --x: 0;
  --y: 0;
  --rotate: 0;
  --plane-x: 0;
  --plane-y: 0;
  --plane-opacity: 1;
  --trails: #{rgba(#fff, .15)};
  --trails-stroke: 57;
  --left-wing-background: var(--primary);
  --left-wing-first-x: 0;
  --left-wing-first-y: 0;
  --left-wing-second-x: 50;
  --left-wing-second-y: 0;
  --left-wing-third-x: 0;
  --left-wing-third-y: 100;
  --left-body-background: var(--primary);
  --left-body-first-x: 51;
  --left-body-first-y: 0;
  --left-body-second-x: 51;
  --left-body-second-y: 100;
  --left-body-third-x: 0;
  --left-body-third-y: 100;
  --right-wing-background: var(--primary);
  --right-wing-first-x: 49;
  --right-wing-first-y: 0;
  --right-wing-second-x: 100;
  --right-wing-second-y: 0;
  --right-wing-third-x: 100;
  --right-wing-third-y: 100;
  --right-body-background: var(--primary);
  --right-body-first-x: 49;
  --right-body-first-y: 0;
  --right-body-second-x: 49;
  --right-body-second-y: 100;
  --right-body-third-x: 100;
  --right-body-third-y: 100;
  display: block;
  cursor: pointer;
  position: relative;
  border: 0;
  padding: 8px 0;
  min-width: 100px;
  text-align: center;
  margin: 0;
  line-height: 24px;
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  background: none;
  outline: none;
  color: var(--text);
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
  .plane,
  .trails {
    pointer-events: none;
    position: absolute;
  }
  .plane {
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    filter: drop-shadow(0 3px 6px var(--shadow));
    transform:  translate(calc(var(--x) * 1px), calc(var(--y) * 1px)) rotate(calc(var(--rotate) * 1deg)) translateZ(0);
    .left,
    .right {
      position: absolute;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
      opacity: var(--plane-opacity);
      transform: translate(calc(var(--plane-x) * 1px), calc(var(--plane-y) * 1px)) translateZ(0);
      &:before,
      &:after {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        right: 0;
        bottom: 0;
        border-radius: calc(var(--border-radius) * 1px);
        transform: translate(var(--part-x, .4%), var(--part-y, 0)) translateZ(0);
        z-index: var(--z-index, 2);
        background: var(--background, var(--left-wing-background));
        clip-path: polygon(calc(var(--first-x, var(--left-wing-first-x)) * 1%) calc(var(--first-y, var(--left-wing-first-y)) * 1%), calc(var(--second-x, var(--left-wing-second-x)) * 1%) calc(var(--second-y, var(--left-wing-second-y)) * 1%), calc(var(--third-x, var(--left-wing-third-x)) * 1%) calc(var(--third-y, var(--left-wing-third-y)) * 1%));
      }
    }
    .left:after {
      --part-x: -1%;
      --z-index: 1;
      --background: var(--left-body-background);
      --first-x: var(--left-body-first-x);
      --first-y: var(--left-body-first-y);
      --second-x: var(--left-body-second-x);
      --second-y: var(--left-body-second-y);
      --third-x: var(--left-body-third-x);
      --third-y: var(--left-body-third-y);
    }
    .right:before {
      --part-x: -1%;
      --z-index: 2;
      --background: var(--right-wing-background);
      --first-x: var(--right-wing-first-x);
      --first-y: var(--right-wing-first-y);
      --second-x: var(--right-wing-second-x);
      --second-y: var(--right-wing-second-y);
      --third-x: var(--right-wing-third-x);
      --third-y: var(--right-wing-third-y);
    }
    .right:after {
      --part-x: 0;
      --z-index: 1;
      --background: var(--right-body-background);
      --first-x: var(--right-body-first-x);
      --first-y: var(--right-body-first-y);
      --second-x: var(--right-body-second-x);
      --second-y: var(--right-body-second-y);
      --third-x: var(--right-body-third-x);
      --third-y: var(--right-body-third-y);
    }
  }
  .trails {
    display: block;
    width: 33px;
    height: 64px;
    top: -4px;
    left: 16px;
    fill: none;
    stroke: var(--trails);
    stroke-linecap: round;
    stroke-width: 2;
    stroke-dasharray: 57px;
    stroke-dashoffset: calc(var(--trails-stroke) * 1px);
    transform: rotate(68deg) translateZ(0);
  }
  span {
    display: block;
    position: relative;
    z-index: 4;
    opacity: var(--text-opacity);
    &.success {
      z-index: 0;
      position: absolute;
      left: 0;
      right: 0;
      top: 8px;
      transform: translateX(calc(var(--success-x) * 1px)) translateZ(0);
      opacity: var(--success-opacity);
      color: var(--success);
      svg {
        display: inline-block;
        vertical-align: top;
        width: 16px;
        height: 16px;
        margin: 4px 8px 0 0;
        fill: none;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
        stroke-dasharray: 14px;
        stroke: var(--success);
        stroke-dashoffset: calc(var(--success-stroke) * 1px)
      }
    }
  }
}

html {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: inherit;
  &:before,
  &:after {
    box-sizing: inherit;
  }
}

// dribbble & twitter
body {
  overflow: hidden;
  min-height: 100vh;
  font-family: 'Inter';
  display: flex;
  justify-content: center;
  align-items: center;
  background: #362A89;
  .twitter {
    position: fixed;
    display: block;
    right: 24px;
    bottom: 20px;
    svg {
      width: 24px;
      height: 24px;
      fill: white;
    }
  }
}

document.querySelectorAll('.button').forEach(button => {

  let getVar = variable => getComputedStyle(button).getPropertyValue(variable);

  button.addEventListener('click', e => {

    if(!button.classList.contains('active')) {

      button.classList.add('active');

      gsap.to(button, {
        keyframes: [{
          '--left-wing-first-x': 50,
          '--left-wing-first-y': 100,
          '--right-wing-second-x': 50,
          '--right-wing-second-y': 100,
          duration: .2,
          onComplete() {
            gsap.set(button, {
              '--left-wing-first-y': 0,
              '--left-wing-second-x': 40,
              '--left-wing-second-y': 100,
              '--left-wing-third-x': 0,
              '--left-wing-third-y': 100,
              '--left-body-third-x': 40,
              '--right-wing-first-x': 50,
              '--right-wing-first-y': 0,
              '--right-wing-second-x': 60,
              '--right-wing-second-y': 100,
              '--right-wing-third-x': 100,
              '--right-wing-third-y': 100,
              '--right-body-third-x': 60
            })
          }
        }, {
          '--left-wing-third-x': 20,
          '--left-wing-third-y': 90,
          '--left-wing-second-y': 90,
          '--left-body-third-y': 90,
          '--right-wing-third-x': 80,
          '--right-wing-third-y': 90,
          '--right-body-third-y': 90,
          '--right-wing-second-y': 90,
          duration: .2
        }, {
          '--rotate': 50,
          '--left-wing-third-y': 95,
          '--left-wing-third-x': 27,
          '--right-body-third-x': 45,
          '--right-wing-second-x': 45,
          '--right-wing-third-x': 60,
          '--right-wing-third-y': 83,
          duration: .25
        }, {
          '--rotate': 60,
          '--plane-x': -8,
          '--plane-y': 40,
          duration: .2
        }, {
          '--rotate': 40,
          '--plane-x': 45,
          '--plane-y': -300,
          '--plane-opacity': 0,
          duration: .375,
          onComplete() {
            setTimeout(() => {
              button.removeAttribute('style');
              gsap.fromTo(button, {
                opacity: 0,
                y: -8
              }, {
                opacity: 1,
                y: 0,
                clearProps: true,
                duration: .3,
                onComplete() {
                  button.classList.remove('active');
                }
              })
            }, 1800)
          }
        }]
      })

      gsap.to(button, {
        keyframes: [{
          '--text-opacity': 0,
          '--border-radius': 0,
          '--left-wing-background': getVar('--primary-dark'),
          '--right-wing-background': getVar('--primary-dark'),
          duration: .11
        }, {
          '--left-wing-background': getVar('--primary'),
          '--right-wing-background': getVar('--primary'),
          duration: .14
        }, {
          '--left-body-background': getVar('--primary-dark'),
          '--right-body-background': getVar('--primary-darkest'),
          duration: .25,
          delay: .1
        }, {
          '--trails-stroke': 171,
          duration: .22,
          delay: .22
        }, {
          '--success-opacity': 1,
          '--success-x': 0,
          duration: .2,
          delay: .15
        }, {
          '--success-stroke': 0,
          duration: .15
        }]
      })

    }

  })

});