@line-color: #D9D9D9;

.mask(@bgcolor: rgba(0, 0, 0, .4), @z-index: @base-zindex * 1500) {
  background-color: @bgcolor;
  position: fixed;
  z-index: @z-index;
  bottom: 0;
  right: 0;
  left: 0;
  top: 0;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
}

.top-line(@color, @zindex: 0) {
  content: '';
  position: absolute;
  z-index: @zindex;
  top: 0;
  left: 0;
  width: 100%;
  border-top: 1px solid @color;
  -webkit-transform: scaleY(.5);
  transform: scaleY(.5);
  -webkit-transform-origin: 0 0;
  transform-origin: 0 0;
}

.right-line(@color, @zindex: 0) {
  content: '';
  position: absolute;
  z-index: @zindex;
  top: 0;
  right: 0;
  height: 100%;
  border-right: 1px solid @color;
  -webkit-transform: scaleX(.5);
  transform: scaleX(.5);
  -webkit-transform-origin: 0 0;
  transform-origin: 0 0;
}

.bottom-line(@color, @zindex: 0) {
  content: '';
  position: absolute;
  z-index: @zindex;
  bottom: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid @color;
  -webkit-transform: scaleY(.5);
  transform: scaleY(.5);
  -webkit-transform-origin: 0 0;
  transform-origin: 0 0;
}

.wui {
  &-keyboard-mask {
    .mask(rgba(0, 0, 0, .4), 1500 + 2);
  }

  &-keyboard {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 1500 + 2;
    transform: translate(0, 100%);
    transition: transform .3s;
    background-color: #F7F7F7;
    &-active {
      transform: translate(0, 0);
    }

    &-content {
      background-color: #FFF;
      margin-top: .3rem;
      position: relative;
      &:before {
        .top-line(@line-color);
      }
    }

    &-title {
      overflow: hidden;
      padding: .2rem 0 .12rem;
      color: #222;
      margin-bottom: 1px; /* for old android */
      font-size: .24rem;
      text-align: center;
      background-color: #FFF;
      &:before {
        content: '\e60a';
        font-size: .26rem;
        color: #FF2424;
        line-height: 1;
        margin-right: .06rem;
      }
    }

    &-numbers {
      font-size: .48rem;
      background-color: #FFF;
      > li {
        width: 100%;
        display: flex;
        > a {
          width: 1%; /* for old android */
          flex: 1;
          color: #222;
          height: 1.2rem;
          position: relative;
          display: flex;
          justify-content: center;
          align-items: center;
          &:not(:last-child):after {
            .right-line(@line-color);
          }
          &:before {
            .top-line(@line-color);
          }
        }
        &:last-child {
          > a:last-child,
          > a:nth-last-child(3) {
            background-color: #F7F7F7;
            font-size: .3rem;
            color: #686868;
          }
        }
      }
    }

    &-head {
      height: .8rem;
      display: flex;
      justify-content: center;
      align-items: center;
      color: #1F2324;
      font-size: .3rem;
      position: relative;
      &:after {
        .bottom-line(@line-color);
      }
    }

    &-password {
      margin: 0 .8rem;
      display: flex;
      position: relative;
      background-color: #FFF;
      &:after {
        content: '';
        width: 200%;
        height: 200%;
        transform: scale(.5);
        position: absolute;
        border: 1px solid @line-color;
        top: 0;
        left: 0;
        transform-origin: 0 0;
        border-radius: 4px;
      }
      li {
        flex: 1;
        position: relative;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 1rem;
        &:not(:last-child):after {
          content: '';
          width: 1px;
          height: 50%;
          position: absolute;
          right: 0;
          top: 25%;
          background-color: @line-color;
          transform: scaleX(.5);
        }
        i {
          width: 6px;
          height: 6px;
          border-radius: 50%;
          background-color: #000;
        }
      }
    }

    &-error {
      padding: 2px .8rem;
      color: #F00;
      overflow: hidden;
      height: .5rem;
      line-height: .5rem;
      font-size: .24rem;
      text-align: left;
    }
  }
}