body
  header
    nav#mainnav(role="navigation")
      ul
        li
          a(href="#")
            i.fa.fa-home
            span Home
        li
          a(href="#")
            i.fa.fa-smile-o
            span About
        li
          a(href="#")
            i.fa.fa-globe
            span Clients
        li
          a(href="#")
            i.fa.fa-envelope-o
            span Contact Us
        li
          a(href="#")
            i.fa.fa-bars

  section
    h1 Simple Nav

//General
$backgroundColor: #c13237;
$mainTextColor: #ffffff;

//Animation speed
$animationSpeed: 0.25s;

//Set to number of list items in nav
$navItems: 4;

//Changes navigation menu size
$navSize: 1.75em;

body {
  font-size: 16px;
  color: $mainTextColor;
  background: $backgroundColor;
  font-family: "Raleway", arial, sans-serif;
}

h1 {
  text-align: center;
  font-size: 6em;
  font-weight: 300;
  position: absolute;
  margin: 0;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

#mainnav {
  ul {
    padding-left: 1em;
    position: fixed;
    bottom: 0;
    font-weight: 400;
    z-index: 100;
    min-width: 20em;
  }
  li {
    list-style: none;
    margin: 0.5em 0 0;
    font-size: $navSize;
    &:hover span {
      opacity: 1;
      transition: $animationSpeed;
    }
  }
  li.invisible {
    opacity: 0;
    visibility: hidden;
    transition: all $animationSpeed;
  }
  li.animate {
    opacity: 0;
    animation-duration: $animationSpeed;
    animation-name: easeOutBounce;
    animation-fill-mode: forwards;
  }
  // @for $i from 0 through $navItems - 1 {
  //   li.animate:nth-child(#{$navItems}) {
  //     animation-delay: .15s * $i;
  //     $navItems : $navItems - 1;
  //   }
  // }
  a {
    text-decoration: none;
    color: $mainTextColor;
  }
  i {
    border: 2px solid $mainTextColor;
    padding: 0.5em;
    border-radius: 50%;
  }
  span {
    color: $backgroundColor;
    padding: 0.35em;
    margin-left: 0.5em;
    border-radius: 0.2em;
    font-size: 0.75em;
    transition: 0.3s;
    background: #fff;
    opacity: 0;
    position: relative;
    &:before {
      content: "";
      width: 0px;
      height: 0px;
      position: absolute;
      left: -0.4em;
      top: 50%;
      margin-top: -0.5em;
      border-style: solid;
      border-width: 0.5em 0.5em 0.5em 0;
      border-color: transparent $mainTextColor transparent transparent;
    }
  }
}

/* Imitates jQuery UI's ease-out-bounce animation effect */
@keyframes easeOutBounce {
  0% {
    font-size: 0;
  }
  37% {
    font-size: $navSize;
  }
  55% {
    font-size: $navSize * 0.75;
  }
  73% {
    font-size: $navSize;
  }
  82% {
    font-size: $navSize * 0.93;
  }
  91% {
    font-size: $navSize;
  }
  96% {
    font-size: $navSize * 0.98;
  }
  100% {
    font-size: $navSize;
    opacity: 1;
  }
}

Nav = {
  init : -> 
    this.setup();
    this.uiBind();
    
  setup : ->
    $('#mainnav')
      .find('li:not(:last-child)')
      .toggleClass('invisible');
    
  uiBind : ->
    $(document).on 'click', '#mainnav', (e)->
      (e).preventDefault();
      $(this).find('li:not(:last-child)')
        .toggleClass('animate')
        .toggleClass('invisible');
}

Nav.init();