Mobile navigation animation

index.html

<!-- BASEN ON DRIBBBLE SHOT: https://dribbble.com/shots/2209627-UI8-Nav -->

<div class="container">
  <span class="menu-trigger">
    <i class="menu-trigger-bar top"></i>
    <i class="menu-trigger-bar middle"></i>
    <i class="menu-trigger-bar bottom"></i>
  </span>
  <span class="close-trigger">
    <i class="close-trigger-bar left"></i>
    <i class="close-trigger-bar right"></i>
  </span>
  <span class="logo">
    <span>
      ⬢
      <i class="logo-title">UI</i>
      <i class="logo-badge">6</i>
    </span>
  </span>
  <div class="inner-container">
      <i class="menu-bg top"></i>
      <i class="menu-bg middle"></i>
      <i class="menu-bg bottom"></i>
    <div class="menu-container">
      <ul class="menu">
        <li>
          <a href="#">Login</a>
        </li>
        <li>
          <a href="#">Create account</a>
        </li>
        <li>
          <a href="#">Support</a>
        </li>
        <li>
          <a href="#">About</a>
        </li>
      </ul>
    </div>
  </div>
</div>
<!-- -->
<div id='links'>
<a id='twitter' href="https://twitter.com/karlovidek" target="_blank"><span class='fa fa-twitter'></span></a>
<div id='pens'><a href="https://codepen.io/karlovidek/" target="_blank"><span class='fa fa-codepen'></span></a> my other Pens</div>
</div>

mobile-navigation-animation.markdown

Mobile navigation animation

Mobile navigation open and close animations using GSAP TweenMax and TimelineMax. Still needs some transition tweaking...

A Pen by Karlo Videk on CodePen.

License.

script.js

//OPEN TRIGGER
var openTrigger = $('.menu-trigger');
var openTriggerTop = openTrigger.find('.menu-trigger-bar.top');
var openTriggerMiddle = openTrigger.find('.menu-trigger-bar.middle');
var openTriggerBottom = openTrigger.find('.menu-trigger-bar.bottom');

//CLOSE TRIGGER
var closeTrigger = $('.close-trigger');
var closeTriggerLeft = closeTrigger.find('.close-trigger-bar.left');
var closeTriggerRight = closeTrigger.find('.close-trigger-bar.right');

//LOGO
var logo = $('.logo');

//MENU
var menuContainer = $('.menu-container');
var menu = $('.menu');
var menuTop = $('.menu-bg.top');
var menuMiddle = $('.menu-bg.middle');
var menuBottom = $('.menu-bg.bottom');

//TL
var tlOpen = new TimelineMax({paused: true});
var tlClose = new TimelineMax({paused: true});

//OPEN TIMELINE
tlOpen.add("preOpen")
  .to(logo, 0.4, {
            scale: 0.8,
            opacity: 0,
            ease: Power2.easeOut
        }, "preOpen")
.to(openTriggerTop, 0.4, {
  x: "+80px", y: "-80px", delay: 0.1, ease: Power4.easeIn, onComplete: function() {
    closeTrigger.css('z-index','25');
  }
}, "preOpen")
.to(openTriggerMiddle, 0.4, {
  x: "+=80px", y: "-=80px", ease: Power4.easeIn,
  onComplete: function() {
    openTrigger.css('visibility','hidden');
  }
}, "preOpen")
.to(openTriggerBottom, 0.4, {
  x: "+=80px", y: "-=80px", delay: 0.2, ease: Power4.easeIn
}, "preOpen")
.add("open", "-=0.4")
.to(menuTop, 0.8, {
  y: "13%",
  ease: Power4.easeInOut
}, "open")
.to(menuMiddle, 0.8, {
  scaleY: 1,
  ease: Power4.easeInOut
}, "open")
.to(menuBottom, 0.8, {
  y: "-114%",
  ease: Power4.easeInOut
}, "open")
.fromTo(menu, 0.6, {
  y: 30, opacity: 0, visibility: 'hidden'
}, {
  y: 0, opacity: 1, visibility: 'visible', ease: Power4.easeOut
}, "-=0.2")
.add("preClose", "-=0.8")
.to(closeTriggerLeft, 0.8, {
  x: "-=100px", y: "+=100px", ease: Power4.easeOut
}, "preClose")
.to(closeTriggerRight, 0.8, {
  x: "+=100px", y: "+=100px", delay: 0.2, ease: Power4.easeOut
}, "preClose");

//CLOSE TIMELINE
tlClose.add("close")
  .to(menuTop, 0.2, {
  backgroundColor: "#6295ca", ease: Power4.easeInOut, onComplete: function() {
    logo.css('z-index','26');
    closeTrigger.css('z-index','5');
 openTrigger.css('visibility','visible');
  }
}, "close")
.to(menuMiddle, 0.2, {
  backgroundColor: "#6295ca", ease: Power4.easeInOut
}, "close") 
.to(menuBottom, 0.2, {
  backgroundColor: "#6295ca", ease: Power4.easeInOut
}, "close")
  .to(menu, 0.6, {
  y: 20, opacity: 0, ease: Power4.easeOut, onComplete: function() {
    menu.css('visibility','hidden');
  }
}, "close")
.to(logo, 0.8, {
  scale: 1, opacity: 1, ease: Power4.easeInOut
}, "close", "+=0.2")
.to(menuTop, 0.8, {
  y: "-113%",
  ease: Power4.easeInOut
}, "close", "+=0.2")
.to(menuMiddle, 0.8, {
  scaleY: 0,
  ease: Power4.easeInOut
}, "close", "+=0.2")
.to(menuBottom, 0.8, {
  y: "23%",
  ease: Power4.easeInOut,
  onComplete: function() {
    menuTop.css('background-color','#ffffff');
    menuMiddle.css('background-color','#ffffff');
    menuBottom.css('background-color','#ffffff');
  }
}, "close", "+=0.2")
.to(closeTriggerLeft, 0.2, {
  x: "+=100px", y: "-=100px", ease: Power4.easeIn
}, "close")
.to(closeTriggerRight, 0.2, {
  x: "-=100px", y: "-=100px", delay: 0.1, ease: Power4.easeIn
}, "close")
.to(openTriggerTop, 1, {
  x: "-=80px", y: "+=80px", delay: 0.2, ease: Power4.easeOut
}, "close")
.to(openTriggerMiddle, 1, {
  x: "-=80px", y: "+=80px", ease: Power4.easeOut
}, "close")
.to(openTriggerBottom, 1, {
  x: "-=80px", y: "+=80px", delay: 0.1, ease: Power4.easeOut
}, "close");

//EVENTS
openTrigger.on('click', function(){
  if(tlOpen.progress() < 1){
                tlOpen.play();
            } else {
                tlOpen.restart();
            }
});
       
closeTrigger.on('click', function(){
  if(tlClose.progress() < 1){
                tlClose.play();
            } else {
                tlClose.restart();
            }
});

scripts

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.2/TweenMax.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.2/TimelineMax.min.js"></script>

style.scss

//VARIABLES
//Black
$black-100: 	rgba(0,0,0,1);
$black-90: 		rgba(0,0,0,0.9);
$black-80: 		rgba(0,0,0,0.8);
$black-70: 		rgba(0,0,0,0.7);
$black-60: 		rgba(0,0,0,0.6);
$black-50: 		rgba(0,0,0,0.5);
$black-40: 		rgba(0,0,0,0.4);
$black-30: 		rgba(0,0,0,0.3);
$black-20: 		rgba(0,0,0,0.2);
$black-10: 		rgba(0,0,0,0.1);

//White
$white-100: 	rgba(255,255,255,1);
$white-90: 		rgba(255,255,255,0.9);
$white-80: 		rgba(255,255,255,0.8);
$white-70: 		rgba(255,255,255,0.7);
$white-60: 		rgba(255,255,255,0.6);
$white-50: 		rgba(255,255,255,0.5);
$white-40: 		rgba(255,255,255,0.4);
$white-30: 		rgba(255,255,255,0.3);
$white-20: 		rgba(255,255,255,0.2);
$white-10: 		rgba(255,255,255,0.1);

//Invisible
$transparent: 	rgba(255,255,255,0);

//COLORS
$light-grey: #e0dfe1;
$light-grey-A: #f0f0f0;
$grey: #9f9e9f;
$dark-grey: #222222;
$white: #ffffff;
$blue: #0190ec;

//BMW
$light-blue: #6295ca;
$dark-blue: #13274c;
$red: #d1253b;

//ANIMATIONS stuff
$hover: all 0.2s ease-in;
$slide: all 0.3s cubic-bezier(.55,0,.1,1);
$slide-delay: all 0.4s 0.1s  cubic-bezier(.55,0,.1,1);
$slide-slow: all 0.5s  cubic-bezier(.55,0,.1,1);
$zoom: all 1s cubic-bezier(.55,0,.1,1);
$zoom-slow: all 2.4s cubic-bezier(.55,0,.1,1);
//MIXINS
// ADDS A BROWSER PREFIX TO THE PROPERTY
@mixin css3-prefix($property, $value) {
    -webkit-#{$property}: #{$value};
    -khtml-#{$property}: #{$value};
    -moz-#{$property}: #{$value};
    -ms-#{$property}: #{$value};
    -o-#{$property}: #{$value};
    #{$property}: #{$value};
}
// TRANSFORM
@mixin transform($params) {
    @include css3-prefix('transform', $params);
}
//FONT IMPORT
@import url(https://fonts.googleapis.com/css?family=Noto+Sans:400,700);

body {
  background-color: lighten($dark-grey, 10%);
  padding: 50px 0;
  font-family: 'Noto Sans', sans-serif;
  text-align: center;
}

//
.container {
  background-color: $dark-grey;
  margin: 0 auto;
  width: 100%;
  max-width: 320px;
  min-height: 568px;
  margin: 0 auto;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  -webkit-box-shadow: 0px 9px 13px 0px $black-30;
-moz-box-shadow: 0px 9px 13px 0px $black-30;
box-shadow: 0px 9px 13px 0px $black-30;
  -webkit-transform: scale(1);
}

.menu-trigger, .close-trigger {
  position: absolute;
  top: 32px;
  right: 20px;
  display: block;
  width: 42px;
  height: 42px;
  cursor: pointer;
  z-index: 333;
  
  &:hover {
    .menu-trigger-bar {
      &:before {
        width: 100%;
      }
    }
    
    .close-trigger-bar {
      &:before {
        width: 100%;
      }
    }
  }
}

.close-trigger {
  z-index: 5;
  top: 42px;
}

.menu-trigger-bar {
  display: block;
  width: 100%;
  height: 4px;
  background-color: $white-100;
  margin-bottom: 6px;
  transform: rotate(-45deg);
  position: relative;
  
  &:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 0%;
    height: 100%;
    background-color: $black-20;
    transition: $slide;
  }
  
  &.top {
    width: 50%;
  }
  &.middle {
    &:before {
      left: auto;
      right: 0;
    }
  }
  &.bottom {
    width: 50%;
    margin-left: 50%;
  }
}

.close-trigger-bar {
  display: block;
  width: 100%;
  height: 4px;
  background-color: $dark-grey;
  position: relative;
  
  &:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 0%;
    height: 100%;
    background-color: $white-20;
    transition: $slide;
  }
  
  &.left {
    transform: translateX(100px) translateY(-100px) rotate(-45deg);
  }
  &.right {
    transform: translateX(-100px) translateY(-100px) rotate(45deg);
    top: -3px;
  }
}

.logo {
  display: block;
  width: 64px;
  height: 64px;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -52px;
  margin-left: -32px;
  text-align: center;
  z-index: 10;
  
  span {
    display: block;
    text-align: center;
    line-height: 62px;
    font-size: 72px;
    color: $white-100;
  }
}

.logo-title {
    position: absolute;
    top: 10px;
    left: 0;
    width: 100%;
    height: 100%;
    color: $dark-grey;
    font-size: 32px;
  line-height: 82x;
}
.logo-badge {
  position: absolute;
  display: block;
  width: 24px;
  height: 24px;
  top: 6px;
  right: -6px;
  border-radius: 100%;
  background-color: $light-blue;
  font-size: 12px;
  line-height: 2;
  text-align: center;
}

.inner-container, .menu-container {
  position: absolute;
  height: 100%;
  width: 100%;
  left: 0;
  top: 0;
}

.inner-container {
  z-index: 20;
}
.menu-container {
  display: flex;
  align-items: center;
}
.menu {
  display: block;
  width: 100%;
  padding: 20%;
  //opacity: 0;
  //visibility: hidden;
  
  li {
    text-align: left;
    display: block;
    padding: 15px 0;
  }
  
  a {
    text-decoration: none;
    color: $dark-grey;
    display: inline-block;
    padding: 10px 0;
    position: relative;
    
    &:hover {
      &:before {
        opacity: 1;
        transform: translateX(0px);
      }
    }
    
    &:before {
      content: "";
      display: block;
      position: absolute;
      left: 0;
      bottom: 0;
      width: 18px;
      height: 4px;
      opacity: 0;
      background-color: $dark-grey;
      transform: translateX(100px);
      transition: $slide;
    }
  }
}

.menu-bg {
  position: absolute;
  display: block;
  width: 200%;
  left: -53%;
  top: -25%;
  //top: -25%;
  height: 40%;
  background-color: $white-100;
  
  &.middle {
    top: 29%;
    left: -53%;
    transform: rotate(-45deg) scaleY(0);
  }
  &.top {
    left: -34%;
    top: 0;
  transform: rotate(-45deg) translateY(-152%);
    //top: -25%;
  }
  &.bottom {
    //bottom: 0;
    top: 105%;
  transform: rotate(-45deg) translateY(25%);
    left: -20%;
  }
}

#links{position:absolute;bottom:0px;left:0px;width:100%;height:50px;font-size:13px;font-family:tahoma;color:#fff;}
#links a{text-decoration:none;font-size:2.3em;color:#fff;}
#twitter{position:absolute;bottom:15px;right:20px;}
#pens{position:absolute;bottom:15px;left:20px;}

styles

<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.5.0/css/font-awesome.min.css" rel="stylesheet" />