app/node_modules/ng-zorro-antd/select/style/single.less

@import (reference) '../../style/themes/index';
@select-prefix-cls: ~'@{ant-prefix}-select';

@selection-item-padding: ceil(@font-size-base * 1.25);

.@{select-prefix-cls}-single {
  // ========================= Selector =========================
  .@{select-prefix-cls}-selector {
    display: flex;

    .@{select-prefix-cls}-selection-search {
      position: absolute;
      top: 0;
      right: @input-padding-horizontal-base;
      bottom: 0;
      left: @input-padding-horizontal-base;

      &-input {
        width: 100%;
      }
    }

    .@{select-prefix-cls}-selection-item,
    .@{select-prefix-cls}-selection-placeholder {
      padding: 0;
      line-height: @select-height-without-border;
      transition: all .3s, visibility 0s;
    }

    .@{select-prefix-cls}-selection-item {
      position: relative;
      user-select: none;
    }

    .@{select-prefix-cls}-selection-placeholder {
      transition: none;
      pointer-events: none;
    }

    // For common baseline align
    &::after,
    /* For '' value baseline align */
    .@{select-prefix-cls}-selection-item::after,
    /* For undefined value baseline align */
    .@{select-prefix-cls}-selection-placeholder::after {
      display: inline-block;
      width: 0;
      visibility: hidden;
      content: '\a0';
    }
  }

  // With arrow should provides `padding-right` to show the arrow
  &.@{select-prefix-cls}-show-arrow .@{select-prefix-cls}-selection-search {
    right: @input-padding-horizontal-base + @font-size-base;
  }

  &.@{select-prefix-cls}-show-arrow .@{select-prefix-cls}-selection-item,
  &.@{select-prefix-cls}-show-arrow .@{select-prefix-cls}-selection-placeholder {
    padding-right: @selection-item-padding;
  }

  // Opacity selection if open
  &.@{select-prefix-cls}-open .@{select-prefix-cls}-selection-item {
    color: @input-placeholder-color;
  }

  // ========================== Input ==========================
  // We only change the style of non-customize input which is only support by `combobox` mode.

  // Not customize
  &:not(.@{select-prefix-cls}-customize-input) {
    .@{select-prefix-cls}-selector {
      width: 100%;
      height: @input-height-base;
      padding: 0 @input-padding-horizontal-base;

      .@{select-prefix-cls}-selection-search-input {
        height: @select-height-without-border;
      }

      &::after {
        line-height: @select-height-without-border;
      }
    }
  }

  &.@{select-prefix-cls}-customize-input {
    .@{select-prefix-cls}-selector {
      &::after {
        display: none;
      }

      .@{select-prefix-cls}-selection-search {
        position: static;
        width: 100%;
      }

      .@{select-prefix-cls}-selection-placeholder {
        position: absolute;
        right: 0;
        left: 0;
        padding: 0 @input-padding-horizontal-base;

        &::after {
          display: none;
        }
      }
    }
  }

  // ============================================================
  // ==                          Size                          ==
  // ============================================================
  .select-size(@suffix, @input-height) {
    @merged-cls: ~'@{select-prefix-cls}-@{suffix}';

    &.@{merged-cls}:not(.@{select-prefix-cls}-customize-input) {
      .@{select-prefix-cls}-selector {
        height: @input-height;

        &::after,
        .@{select-prefix-cls}-selection-item,
        .@{select-prefix-cls}-selection-placeholder {
          line-height: @input-height - 2 * @border-width-base;
        }
      }

      // Not customize
      &:not(.@{select-prefix-cls}-customize-input) {
        .@{select-prefix-cls}-selection-search-input {
          height: @input-height - 2 * @border-width-base;
        }
      }
    }
  }

  .select-size('lg', @select-single-item-height-lg);
  .select-size('sm', @input-height-sm);

  // Size small need additional set padding
  &.@{select-prefix-cls}-sm {
    &:not(.@{select-prefix-cls}-customize-input) {
      .@{select-prefix-cls}-selection-search {
        right: @input-padding-horizontal-sm;
        left: @input-padding-horizontal-sm;
      }

      .@{select-prefix-cls}-selector {
        padding: 0 @input-padding-horizontal-sm;
      }

      // With arrow should provides `padding-right` to show the arrow
      &.@{select-prefix-cls}-show-arrow .@{select-prefix-cls}-selection-search {
        right: @input-padding-horizontal-sm + @font-size-base * 1.5;
      }

      &.@{select-prefix-cls}-show-arrow .@{select-prefix-cls}-selection-item,
      &.@{select-prefix-cls}-show-arrow .@{select-prefix-cls}-selection-placeholder {
        padding-right: @font-size-base * 1.5;
      }
    }
  }

  &.@{select-prefix-cls}-lg {
    &:not(.@{select-prefix-cls}-customize-input) {
      .@{select-prefix-cls}-selector {
        padding: 0 @input-padding-horizontal-lg;
      }
    }
  }
}