html {
  scroll-padding: 50px 0;
}

#main_title {
  margin-top: 0.5em;
}

#themes {
  margin-top: 2em;

  & > p {
    margin: 0;
  }
}

#more_theme h3 {
  display: inline-block;
  margin: 0;
  cursor: pointer;
}

#get {
  margin-bottom: 1em;
}

#code {
  visibility: hidden;
  display: inline-block;
  margin-bottom: 1em;
}

#result {
  display: block;
}

.github {
  margin-top: 2em;
}

code {
  word-break: break-all;
}

input[type="checkbox"][role="switch"] {
  height: 0;
  width: 0;
  visibility: hidden;

  & + label {
    cursor: pointer;
    width: 3.6em;
    height: 1.8em;
    margin: 0;
    background: grey;
    display: block;
    border-radius: 1.8em;
    position: relative;
    transition: 0.3s;

    &:after {
      content: "";
      position: absolute;
      top: 0.1em;
      left: 0.1em;
      width: 1.6em;
      height: 1.6em;
      background: #fff;
      border-radius: 1.6em;
      transition: 0.3s;
    }

    span {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0 12.5%;
      font-size: 0.54em;

      &::before,
      &::after {
        display: block;
        color: #fff;
        font-weight: bold;
        box-sizing: border-box;
      }

      &::before {
        content: "ON";
      }

      &::after {
        content: "OFF";
        color: #ccc;
      }
    }
  }

  &:checked + label {
    background: var(--b-btn-bg);

    &:after {
      left: calc(100% - 0.1em);
      transform: translateX(-100%);
    }

    &:active:after {
      width: 2.34em;
    }
  }
}

img[data-loading],
img[data-failed] {
  width: 40px;
}

details > summary {
  list-style: none;

  &::-webkit-details-marker,
  &::marker {
    display: none;
  }
}

summary::before {
  border-bottom: 6px solid transparent;
  border-left: 10px solid var(--b-txt);
  border-top: 6px solid transparent;
  content: "";
  display: inline-block;
  height: 0;
  margin-right: 10px;
  position: relative;
  transition: 0.2s;
  width: 0;
}

details[open] summary::before {
  transform: rotate(90deg);
}

h2,
h3,
h4,
h5 {
  margin: 1.5em 0 0.6em;
}

.back-to-top {
  position: fixed;
  z-index: 2;
  right: -108px;
  bottom: 0;
  width: 108px;
  height: 150px;
  background: url("./img/back-to-top.png?v=1") no-repeat 0 0;
  background-size: 108px 450px;
  opacity: 0.6;
  transition: opacity 0.3s, right 0.8s;
  cursor: pointer;

  &:hover {
    background-position: 0 -150px;
    opacity: 1;
  }

  &::after {
    content: "";
    position: fixed;
    z-index: 2;
    right: 0;
    bottom: 0;
    width: 108px;
    height: 150px;
    background: url("./img/back-to-top.png?v=1") no-repeat 0 0;
    background-size: 108px 450px;
    background-position: 0 -300px;
    transition: opacity 0.3s;
    opacity: 0;
    pointer-events: none;
  }

  &.load {
    right: 0;
  }

  &.ani-leave {
    background-position: 0 -150px;
    animation: ani-leave 390ms ease-in-out forwards;

    @keyframes ani-leave {
      0% {
        transform: translateX(0);
      }

      100% {
        transform: translateX(108px);
      }
    }
  }

  &.leaved,
  &.ending {
    pointer-events: none;
  }

  &.leaved {
    background: none;
    transition: none;
  }

  &.ending::after {
    opacity: 1;
    transition-delay: 0.35s;
  }
}

@media screen and (min-width: 800px) {
  body {
    max-width: ~"min(90%, 800px)";
  }
}

@media screen and (max-width: 900px) {
  iframe {
    display: none;
  }
}