.header {
  position: absolute;
  z-index: 99;
  top: 0;
  left: 0;
  width: 100%;
}

.header-nav__trigger {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  cursor: pointer;
  position: relative;
  background-color: var(--snow);
  border-radius: 9999px;
  box-shadow: var(--elevation-2);

  & .header-nav__trigger-toggle {
    top: 50%;
    left: 50%;
    transform-origin: center;
    transform: translate(-50%, -50%);
    border-radius: 1px;
    height: 0.125rem;
    width: 1.125rem;
    display: block;
    background-color: var(--ink);
    position: absolute;
    transition: all 150ms ease;

    &::before,
    &::after {
      content: "";
      top: 0;
      left: 0;
      border-radius: 1px;
      height: 0.125rem;
      width: 1.125rem;
      display: block;
      background-color: var(--ink);
      position: absolute;
      transition: all 150ms ease;
    }

    &::before {
      animation: toggler-top 800ms ease forwards;
    }

    &::after {
      animation: toggler-bottom 800ms ease forwards;
    }
  }

  &.active .header-nav__trigger-toggle {
    transition-delay: 200ms;
    transform: translate(-50%, -50%) rotate(135deg);

    &::before {
      animation: toggler-top-open 800ms ease forwards;
    }

    &::after {
      animation: toggler-bottom-open 800ms ease forwards;
    }
  }
}

.header-nav__content {
  position: fixed;
  top: 0;
  left: 0;
  padding-top: 6rem;
  height: 100%;
  width: 100%;
  background-color: var(--white);
  transition: all 400ms ease;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  z-index: -1;
  color: var(--ink);
}

.header-main-link {
  display: flex;
  flex-direction: column;
  background-color: var(--sky-blue);
  color: var(--snow);
  border: 1px solid var(--snow);
  border-radius: 9999px;
  aspect-ratio: 1 / 1;
  align-items: center;
  padding-block: 1.25rem 0.625rem;
  padding-inline: 0.625rem;
  width: 10rem;
  transition: all 250ms ease;
  & > img {
    width: 4.5rem;
  }
  & > p {
    font-size: 0.875em;
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1.25;
    text-align: center;
    white-space: nowrap;
    
    @media (min-width: 1024px) {
    }
  }
  &:hover {
    text-decoration: none;
    color: var(--snow);
    opacity: 0.95;
    transform: scale(0.98);
  }
}
.header-smp-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;

  & .header-main-link {
    width: 100%;
  }
  @media (min-width: 414px){
    & .header-main-link {
      justify-content: center;
    }
  } 
  @media (min-width: 768px){
    grid-template-columns: repeat(4, minmax(0, 1fr));
    & .header-main-link {
      justify-content: center;
    }
  }
  @media (min-width: 1200px){
    display: none;
  }
}


/** Keyframes **/
@keyframes toggler-top-open {
  0% {
    transform: translateY(6px);
  }

  30% {
    transform: translateY(0);
  }

  to {
    transform: translateY(0);
  }
}

@keyframes toggler-bottom-open {
  0% {
    transform: translateY(-6px);
  }

  30% {
    transform: translateY(0);
  }

  to {
    transform: translateY(0) rotate(90deg);
  }
}

@keyframes toggler-bottom {
  0% {
    transform: translateY(0);
  }

  30% {
    transform: translateY(0);
  }

  to {
    transform: translateY(6px);
  }
}

@keyframes toggler-top {
  0% {
    transform: translateY(0) rotate(90deg);
  }

  30% {
    transform: translateY(0);
  }

  to {
    transform: translateY(-6px);
  }
}

/**
 * 開発時にLoading Spinnerで隠れないようにするためのスタイル
 */
.loading-spinner {
  display: none;
}