/* Base CSS */

.navigation {
  display: none;
}
.navigation__checkbox {
  display: none;
}

.navigation__button {
  background-color: #fff;
  height: 7rem;
  width: 7rem;
  position: fixed;
  top: 4rem;
  right: 4rem;
  border-radius: 50%;
  z-index: 2000;
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.1);
  text-align: center;
  cursor: pointer;
}

.navigation__background {
  height: 6rem;
  width: 6rem;
  border-radius: 50%;
  position: fixed;
  top: 4.5rem;
  right: 4.5rem;
  background-image: radial-gradient(
    var(--color-primary-shade-1),
    var(--color-primary-tint-1)
  );
  z-index: 1000;
  transition: transform 0.8s cubic-bezier(0.86, 0, 0.07, 1);
}

.navigation__nav {
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1500;
  opacity: 0;
  width: 0;
  transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.navigation__list {
  display: inline-block;
  list-style: none;
  text-align: center;
  width: 100%;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.navigation__item {
  margin-bottom: 2rem;
}

.navigation__link:link,
.navigation__link:visited {
  display: inline-block;
  font-size: 3rem;
  font-weight: 300;
  padding: 1rem 2rem;
  color: var(--color-white);
  text-transform: uppercase;
  text-decoration: none;
  background-image: linear-gradient(
    120deg,
    transparent 0%,
    transparent 50%,
    #fff 50%
  );
  background-size: 220%;
  transition: all 0.4s;
}

.navigation__link span {
  margin-right: 1.5rem;
  display: inline-block;
}

.navigation__link:hover,
.navigation__link:active {
  background-position: 100%;
  color: var(--color-primary-shade-1);
  transform: translateX(1rem);
}

/* Functionality */
.navigation__checkbox:checked ~ .navigation__background {
  transform: scale(80);
}

.navigation__checkbox:checked ~ .navigation__nav {
  opacity: 1;
  width: 100%;
}

/* Icon */
.navigation__icon {
  position: relative;
  margin-top: 3.5rem;
}

.navigation__icon,
.navigation__icon::before,
.navigation__icon::after {
  width: 3rem;
  height: 2px;
  background-color: #333;
  display: inline-block;
}

.navigation__icon::before,
.navigation__icon::after {
  content: "";
  position: absolute;
  left: 0;
  transition: all 0.2s;
}

.navigation__icon::before {
  top: -0.8rem;
}

.navigation__icon::after {
  top: 0.8rem;
}

.navigation__button:hover .navigation__icon::before {
  top: -1rem;
}

.navigation__button:hover .navigation__icon::after {
  top: 1rem;
}

.navigation__checkbox:checked + .navigation__button .navigation__icon {
  background-color: transparent;
}

.navigation__checkbox:checked + .navigation__button .navigation__icon::before {
  top: 0;
  transform: rotate(135deg);
}

.navigation__checkbox:checked + .navigation__button .navigation__icon::after {
  top: 0;
  transform: rotate(-135deg);
}

/* Media queries */

@media only screen and (max-width: 700px) {
  .navigation {
    display: block;
  }

  .header {
    display: none;
  }
}