/* <reset-style> ============================ */
button {
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font-family: inherit;
}
/* ============================ */
/* <style for bg> ======== */
.background {
  border-radius: 16px;
  border: 1px solid #1a1a1a;
  background: rgba(74, 74, 74, 0.39);
  mix-blend-mode: luminosity;
  box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.20);
  backdrop-filter: blur(15px);
  width: 65px;
  height: 65px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* <style for menu__icon> ======== */
.menu__icon {
  width: 32px;
  height: 32px;
  padding: 4px;
}

.menu__icon span {
  display: block;
  width: 100%;
  height: 0.125rem;
  border-radius: 2px;
  background-color: rgb(0, 122, 255);
  box-shadow: 0 .5px 2px 0 hsla(0, 0%, 0%, .2);
  transition: background-color .4s;
  position: relative;
}

.menu__icon span+span {
  margin-top: .375rem;
}

.menu__icon span:nth-child(1) {
  animation: ease .8s menu-icon-top-2 forwards;
}

.menu__icon span:nth-child(2) {
  animation: ease .8s menu-icon-scaled-2 forwards;
}

.menu__icon span:nth-child(3) {
  animation: ease .8s menu-icon-bottom-2 forwards;
}

.menu__icon:hover span:nth-child(1) {
  animation: ease .8s menu-icon-top forwards;
}

.menu__icon:hover span:nth-child(2) {
  animation: ease .8s menu-icon-scaled forwards;
}

.menu__icon:hover span:nth-child(3) {
  animation: ease .8s menu-icon-bottom forwards;
  background-color: rgb(255, 59, 48);
}

@keyframes menu-icon-top {
  0% {
    top: 0;
    transform: rotate(0);
  }

  50% {
    top: .5rem;
    transform: rotate(0);
  }

  100% {
    top: .5rem;
    transform: rotate(45deg);
  }
}

@keyframes menu-icon-top-2 {
  0% {
    top: .5rem;
    transform: rotate(45deg);
  }

  50% {
    top: .5rem;
    transform: rotate(0);
  }

  100% {
    top: 0;
    transform: rotate(0);
  }
}

@keyframes menu-icon-bottom {
  0% {
    bottom: 0;
    transform: rotate(0);
  }

  50% {
    bottom: .5rem;
    transform: rotate(0);
  }

  100% {
    bottom: .5rem;
    transform: rotate(135deg);
  }
}

@keyframes menu-icon-bottom-2 {
  0% {
    bottom: .5rem;
    transform: rotate(135deg);
  }

  50% {
    bottom: .5rem;
    transform: rotate(0);
  }

  100% {
    bottom: 0;
    transform: rotate(0);
  }
}

@keyframes menu-icon-scaled {
  50% {
    transform: scale(0);
  }

  100% {
    transform: scale(0);
  }
}

@keyframes menu-icon-scaled-2 {
  0% {
    transform: scale(0);
  }

  50% {
    transform: scale(0);
  }

  100% {
    transform: scale(1);
  }
}