.#{$ns}Drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: $zindex-modal;
  overflow: hidden;
  outline: 0;

  &-content {
    position: absolute;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    pointer-events: auto;
    background: var(--Drawer-bg);
    background-clip: padding-box;
    outline: 0;
    z-index: 2;
    border-radius: var(--Drawer-content-borderRadius);
    transition: transform ease-in-out var(--animation-duration);
  }

  &-overlay {
    transition: ease-out opacity var(--animation-duration);
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    background: var(--Drawer-overlay-bg);
    opacity: 0;

    &.in {
      opacity: 1;
    }
  }

  &-header {
    padding: var(--Drawer-header-padding);
    background: var(--Drawer-header-bg);
    @include clearfix();
    border-bottom: var(--Drawer-content-borderWidth) solid
      var(--Drawer-header-borderColor);
    border-top-left-radius: var(--Drawer-content-borderRadius);
    border-top-right-radius: var(--Drawer-content-borderRadius);
  }

  &-title {
    font-size: var(--drawer-header-fontSize);
    font-weight: var(--drawer-header-fontWeight);
    color: var(--drawer-header-color);
    height: var(--drawer-header-height);
  }

  &-close {
    position: absolute;
    color: var(--Drawer-close-color);
    line-height: 1;
    text-decoration: none;

    svg {
      margin-top: px2rem(2px);
      width: var(--drawer-header-icon-size);
      height: var(--drawer-header-icon-size);
      fill: var(--Drawer-close-color);
      color: var(--drawer-header-icon-color);
    }

    .Drawer-close {
      content: var(--drawer-header-icon-icon);
    }

    &:not(.is-disabled) {
      cursor: pointer;

      &:hover {
        text-decoration: none;
        color: var(--Drawer-close-onHover-color);

        svg {
          fill: var(--Drawer-close-onHover-color);
        }
      }
    }
  }

  &-body {
    padding: 0 var(--drawer-content-paddingRight)
      var(--drawer-content-paddingBottom) var(--drawer-content-paddingLeft);
    flex-basis: 0;
    flex-grow: 1;
    overflow: auto;

    // 因为如果成员里面有 position:sticky 的内容
    // 用 padding 会导致位置不正确
    // 所以改成这种写法
    &:before {
      content: '';
      display: block;
      height: var(--drawer-content-paddingTop);
    }
  }

  &-footer {
    display: flex;
    align-items: flex-end;
    height: var(--drawer-footer-height);
    justify-content: flex-end;
    padding: var(--Drawer-footer-padding);
    border-top: var(--Drawer-content-borderWidth) solid
      var(--Drawer-footer-borderColor);
    border-bottom-left-radius: var(--Drawer-content-borderRadius);
    border-bottom-right-radius: var(--Drawer-content-borderRadius);

    .#{$ns}Button {
      margin-left: var(--gap-xs);
    }

    .#{$ns}Drawer-info {
      flex-basis: 0;
      flex-grow: 1;
      text-align: left;
      align-self: center;
    }

    .#{$ns}Drawer-error {
      color: var(--danger);
      white-space: pre-wrap;
    }
  }

  &.#{$ns}Drawer--noOverlay {
    pointer-events: none;
  }

  .#{$ns}Drawer-resizeCtrl {
    position: absolute;
    border: var(--borderWidth) solid var(--borderColor);
    background: var(--white);
    border-radius: var(--borderRadius);
    font-size: var(--fontSizeSm);
    line-height: px2rem(10px);
    text-align: center;
    user-select: none;
  }
}

// size
@include media-breakpoint-up(sm) {
  .#{$ns}Drawer .#{$ns}Drawer-content {
    width: var(--Drawer-widthBase);
    height: var(--Drawer-widthBase);
  }

  .#{$ns}Drawer--xs .#{$ns}Drawer-content {
    width: var(--drawer-size-xs-width);
    height: var(--Drawer-widthXs);
  }

  .#{$ns}Drawer--sm .#{$ns}Drawer-content {
    width: var(--drawer-size-sm-width);
    height: var(--Drawer-widthSm);
  }

  .#{$ns}Drawer--md .#{$ns}Drawer-content {
    width: var(--drawer-size-md-width);
    height: var(--Drawer-widthMd);
  }

  .#{$ns}Drawer--lg .#{$ns}Drawer-content {
    width: var(--drawer-size-lg-width);
    height: var(--Drawer-widthLg);
  }

  .#{$ns}Drawer--xl .#{$ns}Drawer-content {
    width: var(--drawer-size-xl-width);
    height: var(--Drawer-widthXl);
  }

  // 从第二层弹框开始左右弹框的每层宽度或高度递减
  @for $i from 2 through 6 {
    $space-diff: 20;
    .#{$ns}Drawer--right.#{$ns}Modal--#{$i}th,
    .#{$ns}Drawer--left.#{$ns}Modal--#{$i}th {
      &.#{$ns}Drawer .#{$ns}Drawer-content {
        width: calc(var(--Drawer-widthBase) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--xs .#{$ns}Drawer-content {
        width: calc(var(--Drawer-widthXs) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--sm .#{$ns}Drawer-content {
        width: calc(var(--Drawer-widthSm) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--md .#{$ns}Drawer-content {
        width: calc(var(--Drawer-widthMd) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--lg .#{$ns}Drawer-content {
        width: calc(var(--Drawer-widthLg) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--xl .#{$ns}Drawer-content {
        width: calc(var(--Drawer-widthXl) - #{($i - 1) * $space-diff}px);
      }
    }

    .#{$ns}Drawer--top.#{$ns}Modal--#{$i}th,
    .#{$ns}Drawer--bottom.#{$ns}Modal--#{$i}th {
      &.#{$ns}Drawer .#{$ns}Drawer-content {
        height: calc(var(--Drawer-widthBase) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--xs .#{$ns}Drawer-content {
        height: calc(var(--Drawer-widthXs) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--sm .#{$ns}Drawer-content {
        height: calc(var(--Drawer-widthSm) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--md .#{$ns}Drawer-content {
        height: calc(var(--Drawer-widthMd) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--lg .#{$ns}Drawer-content {
        height: calc(var(--Drawer-widthLg) - #{($i - 1) * $space-diff}px);
      }

      &.#{$ns}Drawer--xl .#{$ns}Drawer-content {
        height: calc(var(--Drawer-widthXl) - #{($i - 1) * $space-diff}px);
      }
    }
  }
}

// positons
.#{$ns}Drawer--top .#{$ns}Drawer-content.in,
.#{$ns}Drawer--right .#{$ns}Drawer-content.in,
.#{$ns}Drawer--bottom .#{$ns}Drawer-content.in,
.#{$ns}Drawer--left .#{$ns}Drawer-content.in {
  transform: translate3d(0, 0, 0);
}

.#{$ns}Drawer--top {
  .#{$ns}Drawer-close {
    top: var(--gap-base);
    right: var(--gap-base);
    left: auto;
    margin-top: 0;
    z-index: 10;
  }

  .#{$ns}Drawer-content {
    top: 0;
    bottom: auto;
    left: 0;
    right: 0;
    width: 100%;
    transform: translate3d(0, -100%, 0);
    box-shadow: 0 10px 10px -10px rgba(0, 0, 0, 0.2);
    min-height: 120px;
  }

  .#{$ns}Drawer-resizeCtrl {
    bottom: px2rem(-6px);
    left: 50%;
    cursor: ns-resize;
    width: px2rem(24px);
    height: px2rem(12px);
  }
}

.#{$ns}Drawer--right {
  .#{$ns}Drawer-close {
    top: var(--gap-md);
    right: var(--gap-md);
    margin-right: 0;
    z-index: 10;
  }

  .#{$ns}Drawer-content {
    top: 0;
    bottom: 0;
    left: auto;
    right: 0;
    height: 100%;
    transform: translate3d(100%, 0, 0);
    box-shadow: -10px 0 10px -10px rgba(0, 0, 0, 0.2);
    min-width: 120px;
  }

  .#{$ns}Drawer-footer {
    justify-content: flex-end;

    .#{$ns}Button {
      margin-left: var(--drawer-footer-margin-left);
      margin-right: var(--gap-xs);
    }

    .#{$ns}Drawer-info {
      flex-basis: 0;
      flex-grow: 1;
      align-self: center;
    }

    .#{$ns}Drawer-error {
      color: var(--danger);
    }
  }

  .#{$ns}Drawer-resizeCtrl {
    left: px2rem(-6px);
    top: 50%;
    cursor: ew-resize;
    writing-mode: vertical-lr;
    width: px2rem(12px);
    height: px2rem(24px);
  }
}

.#{$ns}Drawer--bottom {
  .#{$ns}Drawer-close {
    top: var(--gap-base);
    right: var(--gap-base);
    left: auto;
    margin-bottom: 0;
    z-index: 10;
  }

  .#{$ns}Drawer-content {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    transform: translate3d(0, 100%, 0);
    box-shadow: 0 -10px 10px -10px rgba(0, 0, 0, 0.2);
    min-height: 120px;
  }

  .#{$ns}Drawer-resizeCtrl {
    top: px2rem(-6px);
    left: 50%;
    cursor: ns-resize;
    width: px2rem(24px);
    height: px2rem(12px);
  }
}

.#{$ns}Drawer--left {
  .#{$ns}Drawer-close {
    left: auto;
    right: var(--gap-base);
    top: var(--gap-base);
    z-index: 10;
  }

  .#{$ns}Drawer-content {
    top: 0;
    bottom: 0;
    right: auto;
    left: 0;
    height: 100%;
    transform: translate3d(-100%, 0, 0);
    box-shadow: 10px 0 10px -10px rgba(0, 0, 0, 0.2);
    border-width: 0 var(--Drawer-content-borderWidth) 0 0;
    min-width: 120px;
  }

  .#{$ns}Drawer-resizeCtrl {
    right: px2rem(-6px);
    top: 50%;
    cursor: ew-resize;
    writing-mode: vertical-lr;
    width: px2rem(12px);
    height: px2rem(24px);
  }

  .#{$ns}Button {
    margin-left: var(--Drawer-footer-margin);
  }
}