<div class="container">
  <div class="ripple"></div>
  <div class="toggle" data-state="visible">
    <svg xmlns="http://www.w3.org/2000/svg" class="eye" width="32" height="32"><circle cx="16" cy="15" r="3"/><path d="M30 16s-6.268 7-14 7-14-7-14-7 6.268-7 14-7 14 7 14 7zM22.772 10.739a8 8 0 1 1-13.66.189"/></svg>
  </div>
  <input type="text" id="password" 
         placeholder="Enter password" autocomplete="off">
  <label for="password"></label>
</div>

// Colors
$backgroundColor: #d4fce4;
$backgroundColorSelection: #d4fce4;
$boxShadow: #c1e6d0;
$boxShadow-hover: #c1e6d0;

// Some Helpers
@mixin size($width: null, $height: $width) {
  width: $width;
  height: $height;
}
%reset {
  margin: 0;
  padding: 0;
}
%flex {
  display: flex;
  justify-content: center;
  align-items: center;
}
*,
*:before,
*:after {
  box-sizing: border-box;
}

// Just for demo
html,
body {
  @include size($width: 100%);
  @extend %reset;
  font-family: "Poppins", sans-serif;
}

body {
  @extend %reset;
  @extend %flex;
  @include size($width:100%);
  overflow: hidden;
  background: $backgroundColor;
}

// Input Container
.container {
  position: relative;
  perspective: 80;
  border-radius: 100vw;
}

// Ripple Effect
.ripple {
  position: absolute;
  width: 180px;
  height: 70px;
  z-index: 90;
  right: 0;
  transition: transform 0.2s;
  transition: transform 0.2s;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 0 25px;
  overflow: hidden;
  border-radius: 100vw;
  pointer-events: none;

  &.animate {
    &:before {
      animation: clicked 0.4s forwards cubic-bezier(0.5, 0.61, 0.36, 1);
    }
  }
  &:before {
    content: "";
    background: rgba(0, 0, 0, 0.1);
    width: 100px;
    height: 100px;
    position: absolute;
    top: 50%;
    right: 41px;
    border-radius: 50%;
    opacity: 0;
    transform: translate(50%, -50%) scale(0.5);
    pointer-events: none;
  }

  @keyframes clicked {
    0% {
      opacity: 0;
      transform: translate(50%, -50%) scale(0.5);
    }
    10% {
      opacity: 0.8;
    }
    100% {
      opacity: 0;
      transform: translate(50%, -50%) scale(1.2);
    }
  }
}

// Toggle Visibility
.toggle {
  position: absolute;
  width: 85px;
  height: 70px;
  background: transparent;
  z-index: 100;
  right: 0;
  top: 0;
  transition: transform 0.2s;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  overflow: hidden;
  border-radius: 100vw;
  cursor: pointer;

  // Slash-line over the eye icon
  &:before {
    content: "";
    display: block;
    position: absolute;
    left: 35px;
    top: 25px;
    height: 2px;
    background: black;
    transform-origin: top left;
    transform: rotateZ(46deg);
    transition: width 0.13s ease-out;
  }
  &[data-state="visible"] {
    &:before {
      width: 25px;
    }
  }
  &[data-state="hidden"] {
    &:before {
      width: 0;
    }
  }

  // SVG eye icon
  .eye {
    fill: #000000;
    transition: transform .13s linear;
    stroke-width: 0;
    transform: scale(1) rotateY(0);

    path {
      fill: none;
      stroke-width: 1.5;
      stroke-miterlimit: 5;
      stroke: #000000;
    }
  }

  // When pressed
  &:active {
    transform: scale(0.9);

    + input {
      transform: rotateY(1deg);
      letter-spacing: 1.5px;
      box-shadow: 3px 0px 15px 0px $boxShadow-hover;
      cursor: text;

      &.password {
        letter-spacing: 3px;
      }
    }
    
    &:before {
      transform: rotateZ(46deg) rotateY(5deg);
    }

    .eye {
      transform: scale(0.75) rotateY(5deg);
    }
  }
}

// Text / Password input
input {
  @extend %flex;
  @include size($width: 340px, $height: 70px);
  background: #ffffff;
  border-radius: 10px;
  will-change: transform;
  border-radius: 100vw;
  transition: all 0.2s ease;
  cursor: pointer;
  color: #ffffff;
  font-size: 22px;
  color: #000000;
  outline: none;
  text-align: left;
  border: 0;
  padding: 10px 80px 10px 30px;
  transform-origin: left center;
  transition: transform 0.13s;
  font-family: "Poppins", sans-serif;
  box-shadow: 0px 0px 30px 0px $boxShadow;
  transition: letter-spacing 0.13s ease-out, box-shadow 0.13s ease-out;

  &::selection {
    background: $backgroundColorSelection;
  }
  
  &::placeholder {
    color: $boxShadow;
  }

  &.password {
    letter-spacing: 1px;
  }
}

const eye = document.querySelector('.eye'),
      ripple = document.querySelector('.ripple'),
      toggle = document.querySelector('.toggle'),
      input = document.querySelector('input');

function click(e) {
  // Ripple Effect
  ripple.classList.add('animate');
  // Push Effect
  input.classList.add('animate');
  // Toggle input type between: password / text 
  input.classList.toggle('password'); 
  input.type === 'text' ? input.type = 'password' : input.type = 'text'; 
  toggle.dataset.state = input.type === 'text' ? 'visible' : 'hidden';
}
toggle.addEventListener('click', click);

// Remove all after animation ends
function removeAnimate() {
  ripple.classList.remove('animate');
  input.classList.remove('animate');
  toggle.style.pointerEvents = 'all';
}
ripple.addEventListener('animationend', removeAnimate)