CodePen Embed - Material Compact Login Animation

<div class="materialContainer">


   <div class="box">

      <div class="title">LOGIN</div>

      <div class="input">
         <label for="name">Username</label>
         <input type="text" name="name" id="name">
         <span class="spin"></span>
      </div>

      <div class="input">
         <label for="pass">Password</label>
         <input type="password" name="pass" id="pass">
         <span class="spin"></span>
      </div>

      <div class="button login">
         <button><span>GO</span> <i class="fa fa-check"></i></button>
      </div>

      <a href="" class="pass-forgot">Forgot your password?</a>

   </div>

   <div class="overbox">
      <div class="material-button alt-2"><span class="shape"></span></div>

      <div class="title">REGISTER</div>

      <div class="input">
         <label for="regname">Username</label>
         <input type="text" name="regname" id="regname">
         <span class="spin"></span>
      </div>

      <div class="input">
         <label for="regpass">Password</label>
         <input type="password" name="regpass" id="regpass">
         <span class="spin"></span>
      </div>

      <div class="input">
         <label for="reregpass">Repeat Password</label>
         <input type="password" name="reregpass" id="reregpass">
         <span class="spin"></span>
      </div>

      <div class="button">
         <button><span>NEXT</span></button>
      </div>


   </div>

</div>

.box {
  position: relative;
  top: 0;
  opacity: 1;
  float: left;
  padding: 60px 50px 40px 50px;
  width: 100%;
  background: #fff;
  border-radius: 10px;
  transform: scale(1);
  -webkit-transform: scale(1);
  -ms-transform: scale(1);
  z-index: 5;

  &.back {
    transform: scale(0.95);
    -webkit-transform: scale(0.95);
    -ms-transform: scale(0.95);
    top: -20px;
    opacity: .8;
    z-index: -1;
  }

  &:before {
    content: "";
    width: 100%;
    height: 30px;
    border-radius: 10px;
    position: absolute;
    top: -10px;
    background: rgba(255, 255, 255, 0.6);
    left: 0;
    transform: scale(0.95);
    -webkit-transform: scale(0.95);
    -ms-transform: scale(0.95);
    z-index: -1;
  }
}

.overbox .title {
  color: #fff;

  &:before {
    background: #fff;
  }
}

.title {
  width: 100%;
  float: left;
  line-height: 46px;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #ED2553;
  position: relative;

  &:before {
    content: "";
    width: 5px;
    height: 100%;
    position: absolute;
    top: 0;
    left: -50px;
    background: #ED2553;
  }
}

.input {
  transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  -ms-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  label, input, .spin {
    transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    -ms-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.button {
  transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  -ms-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  button .button.login button i.fa {
    transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    -ms-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.material-button .shape {
  &:before, &:after {
    transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    -ms-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.button.login button {
  transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  -ms-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.material-button, .alt-2, .material-button .shape, .alt-2 .shape, .box {
  transition: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-transition: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  -ms-transition: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

.input {
  width: 100%;
  float: left;

  label, input, .spin {
    width: 100%;
    float: left;
  }
}

.button {
  width: 100%;
  float: left;

  button {
    width: 100%;
    float: left;
  }
}

.input, .button {
  margin-top: 30px;
  height: 70px;
}

.input {
  position: relative;

  input {
    position: relative;
  }
}

.button {
  position: relative;

  button {
    position: relative;
  }
}

.input {
  input {
    height: 60px;
    top: 10px;
    border: none;
    background: transparent;
    font-family: 'Roboto', sans-serif;
    font-size: 24px;
    color: rgba(0, 0, 0, 0.8);
    font-weight: 300;
  }

  label {
    font-family: 'Roboto', sans-serif;
    font-size: 24px;
    color: rgba(0, 0, 0, 0.8);
    font-weight: 300;
  }
}

.button button {
  font-family: 'Roboto', sans-serif;
  font-size: 24px;
  color: rgba(0, 0, 0, 0.8);
  font-weight: 300;
}

.input {
  &:before, .spin {
    width: 100%;
    height: 1px;
    position: absolute;
    bottom: 0;
    left: 0;
  }

  &:before {
    content: "";
    background: rgba(0, 0, 0, 0.1);
    z-index: 3;
  }

  .spin {
    background: #ED2553;
    z-index: 4;
    width: 0;
  }
}

.overbox .input {
  .spin {
    background: rgba(255, 255, 255, 1);
  }

  &:before {
    background: rgba(255, 255, 255, 0.5);
  }
}

.input label {
  position: absolute;
  top: 10px;
  left: 0;
  z-index: 2;
  cursor: pointer;
  line-height: 60px;
}

.button {
  &.login {
    width: 60%;
    left: 20%;

    button {
      width: 100%;
      line-height: 64px;
      left: 0%;
      background-color: transparent;
      border: 3px solid rgba(0, 0, 0, 0.1);
      font-weight: 900;
      font-size: 18px;
      color: rgba(0, 0, 0, 0.2);
    }
  }

  button {
    width: 100%;
    line-height: 64px;
    left: 0%;
    background-color: transparent;
    border: 3px solid rgba(0, 0, 0, 0.1);
    font-weight: 900;
    font-size: 18px;
    color: rgba(0, 0, 0, 0.2);
  }

  &.login {
    margin-top: 30px;
  }

  margin-top: 20px;

  button {
    background-color: #fff;
    color: #ED2553;
    border: none;
  }

  &.login button {
    &.active {
      border: 3px solid transparent;
      color: #fff !important;

      span {
        opacity: 0;
        transform: scale(0);
        -webkit-transform: scale(0);
        -ms-transform: scale(0);
      }

      i.fa {
        opacity: 1;
        transform: scale(1) rotate(-0deg);
        -webkit-transform: scale(1) rotate(-0deg);
        -ms-transform: scale(1) rotate(-0deg);
      }
    }

    i.fa {
      width: 100%;
      height: 100%;
      position: absolute;
      top: 0;
      left: 0;
      line-height: 60px;
      transform: scale(0) rotate(-45deg);
      -webkit-transform: scale(0) rotate(-45deg);
      -ms-transform: scale(0) rotate(-45deg);
    }

    &:hover {
      color: #ED2553;
      border-color: #ED2553;
    }
  }

  margin: 40px 0;
  overflow: hidden;
  z-index: 2;

  button {
    cursor: pointer;
    position: relative;
    z-index: 2;
  }
}

.pass-forgot {
  width: 100%;
  float: left;
  text-align: center;
  color: rgba(0, 0, 0, 0.4);
  font-size: 18px;
}

.click-efect {
  position: absolute;
  top: 0;
  left: 0;
  background: #ED2553;
  border-radius: 50%;
}

.overbox {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  overflow: inherit;
  border-radius: 10px;
  padding: 60px 50px 40px 50px;

  .title, .button, .input {
    z-index: 111;
    position: relative;
    color: #fff !important;
    display: none;
  }

  .title {
    width: 80%;
  }

  .input {
    margin-top: 20px;

    input, label {
      color: #fff;
    }
  }

  .material-button, .alt-2 {
    display: block;

    .shape {
      display: block;
    }
  }
}

.material-button, .alt-2 {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: #ED2553;
  position: absolute;
  top: 40px;
  right: -70px;
  cursor: pointer;
  z-index: 100;
  transform: translate(0%, 0%);
  -webkit-transform: translate(0%, 0%);
  -ms-transform: translate(0%, 0%);
}

.material-button .shape, .alt-2 .shape {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
}

.material-button .shape:before, .alt-2 .shape:before, .material-button .shape:after, .alt-2 .shape:after {
  content: "";
  background: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(360deg);
  -webkit-transform: translate(-50%, -50%) rotate(360deg);
  -ms-transform: translate(-50%, -50%) rotate(360deg);
}

.material-button .shape:before, .alt-2 .shape:before {
  width: 25px;
  height: 4px;
}

.material-button .shape:after, .alt-2 .shape:after {
  height: 25px;
  width: 4px;
}

.material-button.active, .alt-2.active {
  top: 50%;
  right: 50%;
  transform: translate(50%, -50%) rotate(0deg);
  -webkit-transform: translate(50%, -50%) rotate(0deg);
  -ms-transform: translate(50%, -50%) rotate(0deg);
}

body {
 background-color: black;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  min-height: 100vh;
  font-family: 'Roboto', sans-serif;
  overflow: hidden;
}

html {
  overflow: hidden;
}

.materialContainer {
  width: 100%;
  max-width: 460px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
}

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  text-decoration: none;
  list-style-type: none;
  outline: none;

  &:after, &::before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    text-decoration: none;
    list-style-type: none;
    outline: none;
  }
}

View Compiled

$(function() {

   $(".input input").focus(function() {

      $(this).parent(".input").each(function() {
         $("label", this).css({
            "line-height": "18px",
            "font-size": "18px",
            "font-weight": "100",
            "top": "0px"
         })
         $(".spin", this).css({
            "width": "100%"
         })
      });
   }).blur(function() {
      $(".spin").css({
         "width": "0px"
      })
      if ($(this).val() == "") {
         $(this).parent(".input").each(function() {
            $("label", this).css({
               "line-height": "60px",
               "font-size": "24px",
               "font-weight": "300",
               "top": "10px"
            })
         });

      }
   });

   $(".button").click(function(e) {
      var pX = e.pageX,
         pY = e.pageY,
         oX = parseInt($(this).offset().left),
         oY = parseInt($(this).offset().top);

      $(this).append('<span class="click-efect x-' + oX + ' y-' + oY + '" style="margin-left:' + (pX - oX) + 'px;margin-top:' + (pY - oY) + 'px;"></span>')
      $('.x-' + oX + '.y-' + oY + '').animate({
         "width": "500px",
         "height": "500px",
         "top": "-250px",
         "left": "-250px",

      }, 600);
      $("button", this).addClass('active');
   })

   $(".alt-2").click(function() {
      if (!$(this).hasClass('material-button')) {
         $(".shape").css({
            "width": "100%",
            "height": "100%",
            "transform": "rotate(0deg)"
         })

         setTimeout(function() {
            $(".overbox").css({
               "overflow": "initial"
            })
         }, 600)

         $(this).animate({
            "width": "140px",
            "height": "140px"
         }, 500, function() {
            $(".box").removeClass("back");

            $(this).removeClass('active')
         });

         $(".overbox .title").fadeOut(300);
         $(".overbox .input").fadeOut(300);
         $(".overbox .button").fadeOut(300);

         $(".alt-2").addClass('material-buton');
      }

   })

   $(".material-button").click(function() {

      if ($(this).hasClass('material-button')) {
         setTimeout(function() {
            $(".overbox").css({
               "overflow": "hidden"
            })
            $(".box").addClass("back");
         }, 200)
         $(this).addClass('active').animate({
            "width": "700px",
            "height": "700px"
         });

         setTimeout(function() {
            $(".shape").css({
               "width": "50%",
               "height": "50%",
               "transform": "rotate(45deg)"
            })

            $(".overbox .title").fadeIn(300);
            $(".overbox .input").fadeIn(300);
            $(".overbox .button").fadeIn(300);
         }, 700)

         $(this).removeClass('material-button');

      }

      if ($(".alt-2").hasClass('material-buton')) {
         $(".alt-2").removeClass('material-buton');
         $(".alt-2").addClass('material-button');
      }

   });

});

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External CSS

External JavaScript

https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js