.radio-tab {
  white-space: nowrap;
  user-select: none;
  cursor: pointer;
  margin: 0 -40px;
  padding: 0 40px 3px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  display: block;
}

.radio-tab__field {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
  padding: 0;
  border: 0;
  margin: 0;
}

.radio-tab__item {
  display: inline-block;
  vertical-align: top;
  padding: 4px 10px 10px;
  font-size: 18px;
  line-height: 24px;
  position: relative;
  z-index: 1;
  opacity: 0.7;
}

.radio-tab__item:first-child {
  opacity: 1;
}

.radio-tab__inner {
  position: relative;
}

.radio-tab__inner::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 130px;
  border-radius: 4px;
  transition: transform 0.2s ease-in-out, width 0.2s ease-in-out;
  height: 4px;
  background: #333;
}

.radio-tab__field:checked + .radio-tab__inner::before {
  transform: translateX(130px);
  width: 69px;
}

.radio-tab__field:checked + .radio-tab__inner .radio-tab__item:first-child {
  opacity: 0.7;
}

.radio-tab__field:checked + .radio-tab__inner .radio-tab__item:last-child {
  opacity: 1;
}

.theme-elements .radio-tab {
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.theme-elements .radio-tab__inner:before {
  background: #fff;
}