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              <div class="demo">
  <svg class="sidebar" viewBox="0 0 300 500">
    <path class="s-path" fill="#fff" d="M0,0 50,0 a0,250 0 1,1 0,500 L0,500" />
  </svg>
  <div class="static">
    <div class="static__text">Pull white sidebar to the right</div>
  </div>
  <div class="sidebar-content">
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-man.png" alt="" class="contact__photo" />
      <span class="contact__name">Ethan Hawke</span>
      <span class="contact__status online"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-girl.png" alt="" class="contact__photo" />
      <span class="contact__name">Natalie Portman</span>
      <span class="contact__status online"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-man.png" alt="" class="contact__photo" />
      <span class="contact__name">Kevin Spacey</span>
      <span class="contact__status online"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-girl.png" alt="" class="contact__photo" />
      <span class="contact__name">Rosamund Pike</span>
      <span class="contact__status online"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-man.png" alt="" class="contact__photo" />
      <span class="contact__name">Robert Redford</span>
      <span class="contact__status online"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-girl.png" alt="" class="contact__photo" />
      <span class="contact__name">Scarlett Johansson</span>
      <span class="contact__status online"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-man.png" alt="" class="contact__photo" />
      <span class="contact__name">Tom Cruise</span>
      <span class="contact__status"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-girl.png" alt="" class="contact__photo" />
      <span class="contact__name">Eva Green</span>
      <span class="contact__status"></span>
    </div>
    <div class="contact">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-man.png" alt="" class="contact__photo" />
      <span class="contact__name">Paul Newman</span>
      <span class="contact__status"></span>
    </div>
    <div class="search">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-srch.png" alt="" class="search__img" />
      <input type="text" class="search__input" placeholder="Search" />
    </div>
  </div>
  <div class="chat">
    <span class="chat__back"></span>
    <span class="chat__status">status</span>
    <div class="chat__person">
      <span class="chat__online active"></span>
      <span class="chat__name">Huehue Huehue</span>
    </div>
    <div class="chat__messages">
      <div class="chat__msgRow">
        <div class="chat__message mine">Such SVG, much Javascript, very CSS!</div>
      </div>
      <div class="chat__msgRow">
        <div class="chat__message notMine">Wow!</div>
      </div>
      <div class="chat__msgRow">
        <div class="chat__message notMine">Very elastic! Such easings!</div>
      </div>
      <div class="chat__msgRow">
        <div class="chat__message mine">
          Check out my other <a href="https://codepen.io/suez/public/" target="_blank">pens</a>
        </div>
      </div>
    </div>
    <input type="text" class="chat__input" placeholder="Your message" />
  </div>
</div>
            
          
!
            
              @import "compass/css3";

*, *:before, *:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
$openSans: 'Open Sans', Helvetica, Arial, sans-serif;
$transTime: 200ms;
html, body {
  font-size: 62.5%;
  height: 100%;
}
button, input {
  border: 0;
  outline: none;
}
body {
  background: linear-gradient( 45deg, #636F85, #6960A0);
}
.demo {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -25rem;
  margin-left: -15rem;
  width: 30rem;
  height: 50rem;
  box-shadow: 0 1rem 5rem rgba(0,0,0,0.3);
}
.static {
  height: 100%;
  font-size: 1.8rem;
  font-family: $openSans;
  background: #6D7ADA;
  
  &:before,
  &:after {
    content: "";
    position: absolute;
    left: 7rem;
    width: 2rem;
    height: 2rem;
    margin-left: -1rem;
    margin-top: -1rem;
    border: 2px solid #fff;
    border-left: none;
    border-bottom: none;
    transform: rotate(45deg);
    animation: arrows 1.5s infinite;
  }
  &:before {
    top: 15rem;
  }
  &:after {
    top: 35rem;
  }
  
  &__text {
    width: 9rem;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -5rem;
    transform: translate3d(0,-50%,0);
    color: #fff;
    perspective: 1px;
    backface-visibility: hidden;
  }
}
.sidebar-content {
  z-index: -1;
  position: absolute;
  top: 0;
  left: 0;
  width: 20rem;
  height: 100%;
  padding-top: 1rem;
  opacity: 0;
  transition: opacity $transTime, z-index 0s 0s;
  background-color: #E9EAF3;
  overflow: hidden;
  
  &.active {
    z-index: 2;
    opacity: 1;
  }
}
.contact {
  position: relative;
  width: 100%;
  height: 5rem;
  padding-left: 1.7rem;
  display: flex;
  align-items: center;
  cursor: pointer;
  overflow: hidden;
  
  &__photo {
    border-radius: 50%;
    margin-right: 1.5rem;
  }
  &__name {
    font-size: 1.2rem;
    font-family: $openSans;
  }
  &__status {
    position: absolute;
    top: 2.1rem;
    right: 1.5rem;
    width: 8px;
    height: 8px;
    border: 2px solid #00B570;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s;
    
    &.online {
      opacity: 1;
    }
  }
}
.search {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 5.5rem;
  padding-left: 1.5rem;
  background: #fff;
  display: flex;
  align-items: center;
}
svg {
  overflow: visible;
}
.sidebar {
  z-index: 1;
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
}
.s-path {
  cursor: grab;
}
.cloned {
  position: absolute;
  z-index: 10;
  transition: top 0.3s, left 0.3s;
  transition-delay: 0.2s;
  transition-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
  
  &.removed {
    transition: opacity 0.2s 0;
    opacity: 0;
  }
}
.chat {
  display: none;
  z-index: 5;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 2.5rem 0 5.5rem 2.5rem;
  transition: opacity $transTime;
  opacity: 0;
  
  &.active {
    opacity: 1;
    
    &:before {
      width: 100%;
    }
  }
  
  &:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0.5rem;
    background: #1CC6AE;
    width: 0;
    transition: width 0.2s;
  }
  
  &__back {
    position: relative;
    display: inline-block;
    width: 2rem;
    height: 2rem;
    margin-top: 0.5rem;
    margin-left: -0.6rem;
    cursor: pointer;
    
    &:hover:before {
      transform: translateX(-0.3rem) rotate(-45deg);
    }
    
    &:before {
      content: "";
      position: absolute;
      display: block;
      top: 0.4rem;
      left: 0.6rem;
      width: 1.2rem;
      height: 1.2rem;
      border: 2px solid #545675;
      border-right: none;
      border-bottom: none;
      transform: rotate(-45deg);
      transition: transform 0.3s;
    }
  }
  &__status {
    position: absolute;
    top: 2rem;
    right: 6.5rem;
    font-size: 1.2rem;
    font-family: $openSans;
    text-transform: uppercase;
    color: #B1A9A9;
  }
  &__person {
    display: inline-block;
    position: absolute;
    top: 3rem;
    right: 6.5rem;
    font-size: 2rem;
    font-family: $openSans;
    color: #36343D;
  }
  &__online {
    position: absolute;
    top: 50%;
    left: -1.5rem;
    margin-top: -3px;
    width: 8px;
    height: 8px;
    border: 2px solid #00B570;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s;

    &.active {
      opacity: 1;
    }
  }
  &__messages {
    position: absolute;
    top: 7.5rem;
    left: 2.5rem;
    width: 27.5rem;
    height: 37rem;
    padding-right: 2.5rem;
    overflow-y: auto;
  }
  &__msgRow {
    margin-bottom: 0.5rem;
    
    &:after {
      content: "";
      display: table;
      clear: both;
    }
  }
  &__message {
    display: inline-block;
    max-width: 60%;
    padding: 1rem;
    font-size: 1.4rem;
    font-family: $openSans;
    
    &.mine {
      color: #2B2342;
      border: 1px solid #DFDFDF;
    }
    &.notMine {
      float: right;
      color: #23244E;
      background: #E9EAF3;
    }
  }
  &__input {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5.5rem;
    padding: 1rem 1rem 1rem 4rem;
    background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/142996/elastic-search.png');
    background-repeat: no-repeat;
    background-position: 1rem 1.5rem;
    background-color: #E9EAF3;
    color: #2B2342;
    font-size: 1.4rem;
    font-family: $openSans;
  }
}
.ripple {
  position: absolute;
  width: 10rem;
  height: 10rem;
  margin-left: -5rem;
  margin-top: -5rem;
  background: rgba(0,0,0,0.4);
  transform: scale(0);
  animation: animRipple 0.3s;
  border-radius: 50%;
}
@keyframes animRipple {
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}
@keyframes arrows {
  to {
    transform: translateX(100%) rotate(45deg);
    opacity: 0;
  }
}
            
          
!
            
              $(document).ready(function() {
  var $svg = $(".sidebar"),
      $demo = $(".demo"),
      $path = $(".s-path"),
      $sCont = $(".sidebar-content"),
      $chat = $(".chat"),
      demoTop = $demo.offset().top,
      demoLeft = $demo.offset().left,
      diffX = 0,
      curX = 0,
      finalX = 0,
      frame = 1000 / 60,
      animTime = 600,
      sContTrans = 200,
      animating = false;

  var easings = {
    smallElastic: function(t,b,c,d) {
      var ts = (t/=d)*t;
      var tc = ts*t;
      return b+c*(33*tc*ts + -106*ts*ts + 126*tc + -67*ts + 15*t);
    },
    inCubic: function(t,b,c,d) {
      var tc = (t/=d)*t*t;
      return b+c*(tc);
    }
  };

  function createD(top, ax, dir) {
    return "M0,0 "+top+",0 a"+ax+",250 0 1,"+dir+" 0,500 L0,500";
  }

  var startD = createD(50,0,1),
      midD = createD(125,75,0),
      finalD = createD(200,0,1),
      clickMidD = createD(300,80,0),
      clickMidDRev = createD(200,100,1),
      clickD = createD(300,0,1),
      currentPath = startD;

  function newD(num1, num2) {
    var d = $path.attr("d"),
        num2 = num2 || 250,
        nd = d.replace(/\ba(\d+),(\d+)\b/gi, "a" + num1 + "," + num2);
    return nd;
  }

  function animatePathD(path, d, time, handlers, callback, easingTop, easingX) {
    var steps = Math.floor(time / frame),
        curStep = 0,
        oldArr = currentPath.split(" "),
        newArr = d.split(" "),
        oldLen = oldArr.length,
        newLen = newArr.length,
        oldTop = +oldArr[1].split(",")[0],
        topDiff = +newArr[1].split(",")[0] - oldTop,
        nextTop,
        nextX,
        easingTop = easings[easingTop] || easings.smallElastic,
        easingX = easings[easingX] || easingTop;

    $(document).off("mousedown mouseup");

    function animate() {
      curStep++;
      nextTop = easingTop(curStep, oldTop, topDiff, steps);
      nextX = easingX(curStep, curX, finalX-curX, steps);
      oldArr[1] = nextTop + ",0";
      oldArr[2] = "a" + Math.abs(nextX) + ",250";
      oldArr[4] = (nextX >= 0) ? "1,1" : "1,0";
      $path.attr("d", oldArr.join(" "));
      if (curStep > steps) {
        curX = 0;
        diffX = 0;
        $path.attr("d", d);
        currentPath = d;
        if (handlers) handlers1();
        if (callback) callback();
        return;
      }
      requestAnimationFrame(animate);
    }
    animate();
  }

  function handlers1() {

    $(document).on("mousedown touchstart", ".s-path", function(e) {
      var startX =  e.pageX || e.originalEvent.touches[0].pageX;

      $(document).on("mousemove touchmove", function(e) {
        var x = e.pageX || e.originalEvent.touches[0].pageX;
        diffX = x - startX;
        if (diffX < 0) diffX = 0;
        if (diffX > 300) diffX = 300;
        curX = Math.floor(diffX/2);
        $path.attr("d", newD(curX));
      });
    });

    $(document).on("mouseup touchend", function() {
      $(document).off("mousemove touchmove");
      if (animating) return;
      if (!diffX) return;
      if (diffX < 40) {
        animatePathD($path, newD(0), animTime, true);
      } else {
        animatePathD($path, finalD, animTime, false, function() {
          $sCont.addClass("active");
          setTimeout(function() {
            $(document).on("click", closeSidebar);
          }, sContTrans);
        });
      }
    });

  }

  handlers1();

  function closeSidebar(e) {
    if ($(e.target).closest(".sidebar-content").length ||
        $(e.target).closest(".chat").length) return;
    if (animating) return;
    animating = true;
    $sCont.removeClass("active");
    $chat.removeClass("active");
    $(".cloned").addClass("removed");
    finalX = -75;
    setTimeout(function() {
      animatePathD($path, midD, animTime/3, false, function() {
        $chat.hide();
        $(".cloned").remove();
        finalX = 0;
        curX = -75;
        animatePathD($path, startD, animTime/3*2, true);
        animating = false;
      }, "inCubic");
    }, sContTrans);
    $(document).off("click", closeSidebar);
  }

  function moveImage(that) {
    var $img = $(that).find(".contact__photo"),
        top = $img.offset().top - demoTop,
        left = $img.offset().left - demoLeft,
        $clone = $img.clone().addClass("cloned");

    $clone.css({top: top, left: left});
    $demo.append($clone);
    $clone.css("top");
    $clone.css({top: "1.8rem", left: "25rem"});
  }

  function ripple(elem, e) {
    var elTop = elem.offset().top,
        elLeft = elem.offset().left,
        x = e.pageX - elLeft,
        y = e.pageY - elTop;
    var $ripple = $("<div class='ripple'></div>");
    $ripple.css({top: y, left: x});
    elem.append($ripple);
  }

  $(document).on("click", ".contact", function(e) {
    if (animating) return;
    animating = true;
    $(document).off("click", closeSidebar);
    var that = this,
        name = $(this).find(".contact__name").text(),
        online = $(this).find(".contact__status").hasClass("online");
    $(".chat__name").text(name);
    $(".chat__online").removeClass("active");
    if (online) $(".chat__online").addClass("active");
    ripple($(that),e);
    setTimeout(function() {
      $sCont.removeClass("active");
      moveImage(that);
      finalX = -80;
      setTimeout(function() {
        $(".ripple").remove();
        animatePathD($path, clickMidD, animTime/3, false, function() {
          curX = -80;
          finalX = 0;
          animatePathD($path, clickD, animTime*2/3, true, function() {
            $chat.show();
            $chat.css("top");
            $chat.addClass("active");
            animating = false;
          });
        }, "inCubic");
      }, sContTrans);
    }, sContTrans);
  });

  $(document).on("click", ".chat__back", function() {
    if (animating) return;
    animating = true;
    $chat.removeClass("active");
    $(".cloned").addClass("removed");
    setTimeout(function() {
      $(".cloned").remove();
      $chat.hide();
      finalX = 100;
      animatePathD($path, clickMidDRev, animTime/3, false, function() {
        curX = 100;
        finalX = 0;
        animatePathD($path, finalD, animTime*2/3, true, function() {
          $sCont.addClass("active");
          $(document).on("click", closeSidebar);
          animating = false;
        });
      }, "inCubic");
    }, sContTrans);
  });

  $(window).on("resize", function() {
    demoTop = $demo.offset().top;
    demoLeft = $demo.offset().left;
  });

});
            
          
!
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