.navbar-button {
  position: fixed;
  top: 1.5vh;
  left: 1vw;
  width: 55px;
  height: 55px;
  background: rgba(0,0,0,0.6);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  z-index: 100;
}

.navbar {
  position: fixed;
  left: 1vw;
  top: 50%;
  width: 70px;
  height: 360px;
  background: rgba(0,0,0,0.85);
  border-radius: 999px;
  transform: translate(-120px, -50%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
}

.navbar,
.navbar-button {
  position: fixed;
  z-index: 2147483647;
}

.navbar.is-shown {
  transform: translate(0, -50%);
}

.nav-item {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-item svg {
  width: 26px;
  height: 26px;
  fill: white;
  transition: transform 0.2s ease;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.15);
}

.nav-item:hover svg {
  transform: scale(1.2);
}