$menu-item-height: 40px;

@include b(menu) {
  position: relative;
  padding: 8px 0;
  outline: none;

  &:not(#{&}--horizontal) {
    overflow: hidden auto;
  }

  @include m(horizontal) {
    display: inline-block;
    min-width: 100%;
    white-space: nowrap;

    &::after {
      position: absolute;
      right: 4px;
      bottom: 10px;
      left: 4px;
      height: 1px;
      pointer-events: none;
      content: '';
      background-color: var(--#{$rd-prefix}background-color-indicator);
    }
  }

  @include e(empty) {
    display: flex;
    align-items: center;
    height: $menu-item-height;
    color: var(--#{$rd-prefix}color-disabled);
  }

  @include e(item) {
    position: relative;
    display: flex;
    align-items: center;
    height: $menu-item-height;
    margin: 0;
    list-style: none;
    cursor: pointer;
    transition: height var(--#{$rd-prefix}animation-duration-base) linear, color var(--#{$rd-prefix}animation-duration-base) linear,
      background-color var(--#{$rd-prefix}animation-duration-base) linear;

    &:hover {
      color: var(--#{$rd-prefix}color-primary);
    }

    &:not(.#{$rd-prefix}menu__item--horizontal):hover {
      background-color: var(--#{$rd-prefix}background-color-primary-hover);
    }

    @include when(active) {
      color: var(--#{$rd-prefix}color-primary);

      &:not(.#{$rd-prefix}menu__item--horizontal) {
        @include e(indicator) {
          & > div::before {
            transform: scaleY(1);
          }
        }
      }
    }

    @include when(disabled) {
      pointer-events: none;
      filter: opacity(50%);
    }

    @include m(horizontal) {
      display: inline-flex;
      min-width: unset;
      padding: 0 20px;

      &::after {
        position: absolute;
        right: 20px;
        bottom: -3px;
        left: 20px;
        z-index: 1;
        height: 2px;
        content: '';
        background-color: transparent;
        transition: background-color var(--#{$rd-prefix}animation-duration-base) linear,
          transform var(--#{$rd-prefix}animation-duration-base) linear;
        transform: scaleX(0.8);
      }

      @include when(active) {
        &::after {
          background-color: var(--#{$rd-prefix}color-primary);
          transform: scaleX(1);
        }
      }

      @include e(item-content) {
        flex-shrink: 0;
      }
    }

    @include m(icon) {
      height: 52px;

      @include e(item-icon) {
        width: 48px;
        padding-left: 4px;
        /* stylelint-disable-next-line declaration-property-value-allowed-list */
        font-size: 24px;
      }
    }

    @include m(basic) {
      padding: 0 16px;

      &.#{$rd-prefix}menu__item--horizontal {
        &:hover::after {
          background-color: var(--#{$rd-prefix}color-primary);
          transform: scaleX(1);
        }
      }
    }

    @include m(sub) {
      &:not(.#{$rd-prefix}menu__item--horizontal) {
        padding-right: 32px;
      }

      &.#{$rd-prefix}menu__item--horizontal {
        @include when(expand) {
          &::after {
            background-color: var(--#{$rd-prefix}color-primary);
            transform: scaleX(1);
          }
        }
      }

      &.#{$rd-prefix}menu__item--icon {
        @include e(sub-arrow) {
          opacity: 0;
        }
      }

      @include when(expand) {
        color: var(--#{$rd-prefix}color-primary);
      }
    }
  }

  @include e(indicator) {
    position: relative;
    width: 0;
    height: 100%;

    & > div {
      position: absolute;
      left: -8px;
      width: 2px;
      height: 100%;
      background-color: var(--#{$rd-prefix}background-color-indicator);

      &::before {
        position: absolute;
        top: 8px;
        left: 0;
        display: block;
        width: 2px;
        height: calc(100% - 16px);
        content: '';
        background-color: var(--#{$rd-prefix}color-primary);
        transition: transform var(--#{$rd-prefix}animation-duration-base) linear;
        transform: scaleY(0);
      }
    }

    @include m(first) {
      & > div {
        bottom: 0;
        height: calc(100% - 8px);

        &::before {
          top: 0;
          height: calc(100% - 8px);
          transform-origin: top;
        }
      }
    }

    @include m(last) {
      & > div {
        top: 0;
        height: calc(100% - 8px);

        &::before {
          bottom: 0;
          height: calc(100% - 8px);
          transform-origin: bottom;
        }
      }
    }
  }

  @include e(item-icon) {
    flex-shrink: 0;
    width: calc(1.1em + 8px);
    font-size: 1.1em;
    transition: width var(--#{$rd-prefix}animation-duration-base) linear, padding var(--#{$rd-prefix}animation-duration-base) linear,
      font-size var(--#{$rd-prefix}animation-duration-base) linear;
    transform-origin: left;
  }

  @include e(item-content) {
    @include utils-ellipsis;

    min-width: 1em;
  }

  @include e(sub-arrow) {
    position: absolute;
    right: 21px;
    width: 13px;
    height: 3px;
    pointer-events: none;
    transition: transform var(--#{$rd-prefix}animation-duration-base) linear;
    transform: rotate(90deg) scale(0.5);
    transform-origin: 12px center;

    @include when(expand) {
      transform: translateY(-3px) rotate(90deg) scale(0.5);

      div:nth-child(1) {
        transform: rotate(130deg);
      }

      div:nth-child(2) {
        transform: rotate(-130deg);
      }
    }

    @include m(horizontal) {
      right: 18px;
      transform: rotate(0deg) scale(0.5);
    }

    div {
      position: absolute;
      width: 13px;
      height: 3px;
      background-color: currentcolor;
      /* stylelint-disable-next-line declaration-property-value-allowed-list */
      border-radius: 3px;
      transition: color var(--#{$rd-prefix}animation-duration-base) linear, transform var(--#{$rd-prefix}animation-duration-base) linear;
      transform-origin: 12px center;
    }

    div:nth-child(1) {
      transform: rotate(50deg);
    }

    div:nth-child(2) {
      transform: rotate(-50deg);
    }
  }

  @include e(sub-list) {
    position: relative;
    padding: 0;
    margin: 0;
    list-style: none;

    @include m(popup) {
      $padding-size: 8px;

      position: fixed;
      padding: 4px;
      background-color: var(--#{$rd-prefix}background-color);
      border-radius: var(--#{$rd-prefix}border-radius);
      box-shadow: var(--#{$rd-prefix}shadow-popup);

      @include e(item) {
        padding: 0 $padding-size;

        @include m(sub) {
          padding: 0 24px 0 $padding-size;
        }
      }

      @include e(sub-arrow) {
        right: 12px;
      }

      @include e(group-title) {
        padding: 0 $padding-size;
      }
    }
  }

  @include e(group-list) {
    padding: 0;
    margin: 0;
    list-style: none;
  }

  @include e(group-title) {
    @include utils-ellipsis;

    position: relative;
    display: flex;
    align-items: center;
    height: $menu-item-height;
    padding: 0 16px;
    margin: 0;
    font-size: 0.9em;
    color: var(--#{$rd-prefix}text-color-sub);
  }
}