/* Reference: https://codepen.io/erikterwan/pen/EVzeRP */

#menuToggle {
  display: block;
  position: relative;
  top: 0px;
  left: 0px;

  z-index: 1;

  -webkit-user-select: none;
  user-select: none;
}

#menuToggle a {
  transition: transform 0.2s;
}

#menuToggle a:hover,
#menuToggle a:focus {
  transform: scale(1.05);
  background-color: #fbe144;
}

#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;
}

/*
 * Just a quick hamburger
 */
#menuToggle span {
  display: block;
  width: 33px;
  height: 4px;
  margin-bottom: 5px;
  position: relative;

  background: black;
  border-radius: 3px;

  z-index: 1;

  transform-origin: 4px 0px;

  transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1),
    background 0.5s cubic-bezier(0.77, 0.2, 0.05, 1), opacity 0.55s ease;
}

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

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

/* 
 * Transform all the slices of hamburger
 * into a crossmark.
 */
#menuToggle input:checked ~ span {
  opacity: 1;
  transform: rotate(45deg) translate(-2px, -1px);
  background: #232323;
}

/*
 * But let's hide the middle one.
 */
#menuToggle input:checked ~ span:nth-last-child(3) {
  opacity: 0;
  transform: rotate(0deg) scale(0.2, 0.2);
}

/*
 * Ohyeah and the last one should go the other direction
 */
#menuToggle input:checked ~ span:nth-last-child(2) {
  transform: rotate(-45deg) translate(0, -1px);
}

/*
 * Make this absolute positioned
 * at the top left of the screen
 */
#menu {
  position: absolute;
  display: grid;
  grid-template-rows: auto;
  width: 960px;
  margin: -100px 0 0 -50px;
  padding: 50px;
  padding-top: 125px;

  background: rgb(227, 224, 215);
  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(0.2, 0.2, 0.05, 1);
  border-bottom: 2px solid black;
}

#menu li {
  padding: 0.15rem 0;
  font-size: 1.375rem;
}

/*
 * And let's slide it in from the left
 */
#menuToggle input:checked ~ ul {
  transform: none;
  box-shadow: 0rem 0rem 200vw 200vw rgb(0 0 0 / 60%);
}