@import url(https://fonts.googleapis.com/css?family=Bitter);

/*  Menú de navegación */
#menuToggle{
  display: block;
  position: fixed;
  top: 20px;
  left: 30px;
  z-index: 1;
  -webkit-user-select: none;
  user-select: none;
}

/* Menú de navegación: items */
#menuToggle a{
  text-decoration: none;
  color: #000000;
  transition: color 0.3s ease;
}

/* Menú de navegación: items hover */
#menuToggle a:hover{
  color: #ffffff;
}

/* Casilla de verificación falsa */
#menuToggle input{
  display: block;
  width: 40px;
  height: 32px;
  position: absolute;
  top: -7px;
  left: -5px;
  cursor: pointer;
  opacity: 0; /* hide this */
  z-index: 2; /* and place it over the hamburger */
  -webkit-touch-callout: none;
}

/* Etiqueta span: conforma el botón del menú*/
#menuToggle span{
  display: block;
  width: 33px;
  height: 4px;
  margin-bottom: 5px;
  position: relative;
  background: #000000;
  border-radius: 3px;
  z-index: 1;
  transform-origin: 4px 0px;
  transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
  background 0.5s cubic-bezier(0.77,0.2,0.05,1.0), opacity 0.55s ease;
}

#menuToggle span:first-child{
  transform-origin: 0% 0%;
}

#menuToggle span:nth-last-child(2){
  transform-origin: 0% 100%;
}

/* Transformar el "span" en una cruz */
#menuToggle input:checked ~ span{
  opacity: 1;
  transform: rotate(45deg) translate(-2px, -1px);
  background: #44b882;
}

/*Pero se esconde la del medio*/
#menuToggle input:checked ~ span:nth-last-child(3){
  opacity: 0;
  transform: rotate(0deg) scale(0.2, 0.2);
}

/* Y la última debe ir en otra dirección para generar la cruz*/
#menuToggle input:checked ~ span:nth-last-child(2){
  transform: rotate(-45deg) translate(0, -1px);
}

/*Posicionar el menú, de manera absoluta, a la izqueirda de la pantalla*/
#menu{
  position: absolute;
  width: 250px;
  margin: -100px 0 0 -50px;
  padding: 50px;
  padding-top: 125px;
  background: #8FE1DE;
  list-style-type: none;
  -webkit-font-smoothing: antialiased;
  /* to stop flickering of text in safari */
  transform-origin: 0% 0%;
  transform: translate(-100%, 0);
  transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
}

/* Items dentro de la lista */
#menu li{
  padding: 10px 0;
  font-size: 25px;
  font-family: 'Bitter';
}

/* Para deslizarlo desde la izquierda*/
#menuToggle input:checked ~ ul{
  transform: none;
}