@tabs-prefix-cls: ~'@{prefix}-tabs';

@tabs-prefix-cls-vertical: ~'@{tabs-prefix-cls}-vertical';

/* Vertical */
.@{tabs-prefix-cls} {
  &-vertical {
    // overflow: hidden;
  }

  &-nav-vertical {
    float: left;
    height: 100%;

    &::before {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: initial;
      clear: both;
      width: @tabs-line-size-header-border;
      height: 100%;
    }

    .@{tabs-prefix-cls}-nav-add-btn {
      height: auto;
      margin-top: @tabs-margin-add-icon-left;
      margin-left: 0;
      padding: 0 @tabs-card-padding-title-horizontal;
    }
  }

  &-nav-right {
    float: right;
  }

  &-nav-vertical {
    flex-direction: column;
  }

  &-nav-vertical &-nav-tab {
    flex-direction: column;
    height: 100%;
  }

  &-nav-vertical &-nav-ink {
    position: absolute;
    right: 0;
    bottom: initial;
    left: initial;
    width: @tabs-line-size-ink-stroke;
    transition: top @transition-duration-2 @transition-timing-function-standard,
      height @transition-duration-2 @transition-timing-function-standard;
  }

  &-nav-vertical &-nav-tab-list {
    height: auto;

    &-overflow-scroll {
      padding: @tabs-padding-header-wrapper-vertical 0;
    }
  }

  &-nav-vertical &-tab {
    display: block;
    margin: 0;
    margin-top: @tabs-line-margin-title-vertical;
    white-space: nowrap;

    &:first-of-type {
      margin-top: 0;
    }
  }

  &-nav-right::before {
    right: unset;
    left: 0;
  }

  &-nav-right &-nav-ink {
    right: unset;
    left: 0;
  }

  &-nav-vertical {
    position: relative;
    box-sizing: border-box;
    height: 100%;
  }

  &-nav-vertical&-nav-type-line &-tab {
    padding: 0 @tabs-line-padding-title-horizontal_vertical;
  }

  &-nav-vertical&-nav-type-card &-tab {
    position: relative;
    margin: 0;
    border: @tabs-card-border-width solid @tabs-card-color-title-border;
    border-bottom-color: @color-transparent;

    &:first-child {
      border-top-left-radius: @tabs-card-border-radius;
    }

    &-active,
    &-active:hover {
      border-right-color: var(~'@{mo-cssvars-prefix}-color-bg-2');
      border-bottom-color: @color-transparent;
    }

    &:last-child {
      border-bottom: @tabs-card-border-width solid @tabs-card-color-title-border;
      border-bottom-left-radius: @tabs-card-border-radius;
    }
  }

  &-nav-vertical&-nav-type-card-gutter &-tab {
    position: relative;
    margin-left: 0;
    border-radius: @tabs-card-border-radius 0 0 @tabs-card-border-radius;

    &:not(:first-of-type) {
      margin-top: 4px;
    }

    &-active,
    &-active:hover {
      border-right-color: var(~'@{mo-cssvars-prefix}-color-bg-2');
      border-bottom-color: @tabs-card-color-title-border;
    }
  }

  &-vertical &-content {
    width: auto;
    height: 100%;
    padding: 0;
  }

  &-right&-vertical &-content {
    padding-right: @tabs-content-padding;
  }

  &-left&-vertical &-content {
    padding-left: @tabs-content-padding;
  }

  &-vertical&-type-card,
  &-vertical&-type-card-gutter {
    > .@{tabs-prefix-cls}-content {
      border: @tabs-card-border-content-width solid
        @tabs-line-color-header-border;
      border-left: none;
    }
  }
}