.sidebar {
  position: fixed;
  width: 40px;
  height: 100vh;
  border-right: 1px solid #202020;
  background-color: #FFFFFF;
}

.sidebar.is-open {
  background-color: #202020;
}

.sidebar__button {
  width: 100%;
  height: 60px;
  border-bottom: 1px solid #202020;
  text-align: center;
}

.sidebar__button:hover {
  opacity: 0.7;
}

.sidebar.is-open .sidebar__button {
  border-bottom: 1px solid #FFFFFF;
}

.sidebar__button-logo {
  width: 20px;
  height: 20px;
  margin: 0 auto;
}

.sidebar.is-open .sidebar__button-logo--close {
  display: none;
}

.sidebar__button-logo--open {
  display: none;
}

.sidebar.is-open .sidebar__button-logo--open {
  display: block;
}

.sidebar__button-text {
  margin-top: 2px;
  color: #202020;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 10px;
}

.sidebar.is-open .sidebar__button-text {
  color: #FFFFFF;
}

.sidebar__home-link {
  display: block;
  position: absolute;
  left: calc(50% - 12px);
  top: calc(50% - 41px);
  width: 24px;
  height: 82px;
}

.sidebar__logo {
  width: 100%;
  height: 100%;
}

.sidebar.is-open .sidebar__home-link .sidebar__logo--close {
  display: none;
}

.sidebar__logo--open {
  display: none;
}

.sidebar.is-open .sidebar__home-link .sidebar__logo--open {
  display: block;
}

.sidebar__sns-icons {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  gap: 20px 0;
  position: absolute;
  bottom: 0;
  width: 100%;
  padding-bottom: 30px;
}

.sidebar__sns-icon img {
  width: 20px;
  height: 20px;
}

.sidebar__sns-icon:hover img {
  opacity: 0.7;
  cursor: pointer;
}

.sidebar__sns-icon--open {
  display: none;
}

.sidebar.is-open .sidebar__sns-icons .sidebar__sns-icon--close {
  display: none;
}

.sidebar.is-open .sidebar__sns-icons .sidebar__sns-icon--open {
  display: block;
}