ant-design/components/date-picker/style/panel.less

@picker-cell-inner-cls: ~'@{picker-prefix-cls}-cell-inner';

.@{picker-prefix-cls} {
  @picker-arrow-size: 7px;
  @picker-year-month-cell-width: 60px;
  @picker-panel-width: @picker-panel-cell-width * 7 + @padding-sm * 2 + 4;

  &-panel {
    display: inline-flex;
    flex-direction: column;
    text-align: center;
    background: @calendar-bg;
    border: @border-width-base @border-style-base @picker-border-color;
    border-radius: @border-radius-base;
    outline: none;

    &-focused {
      border-color: @primary-color;
    }
  }

  // ========================================================
  // =                     Shared Panel                     =
  // ========================================================
  &-decade-panel,
  &-year-panel,
  &-quarter-panel,
  &-month-panel,
  &-week-panel,
  &-date-panel,
  &-time-panel {
    display: flex;
    flex-direction: column;
    width: @picker-panel-width;
  }

  // ======================= Header =======================
  &-header {
    display: flex;
    padding: 0 @padding-xs;
    color: @heading-color;
    border-bottom: @border-width-base @border-style-base @picker-border-color;

    > * {
      flex: none;
    }

    button {
      padding: 0;
      color: @disabled-color;
      line-height: @picker-text-height;
      background: transparent;
      border: 0;
      cursor: pointer;
      transition: color @animation-duration-slow;
    }

    > button {
      min-width: 1.6em;
      font-size: @font-size-base;

      &:hover {
        color: @text-color;
      }
    }

    &-view {
      flex: auto;
      font-weight: 500;
      line-height: @picker-text-height;

      button {
        color: inherit;
        font-weight: inherit;

        &:not(:first-child) {
          margin-left: @padding-xs;
        }

        &:hover {
          color: @primary-color;
        }
      }
    }
  }

  // Arrow button
  &-prev-icon,
  &-next-icon,
  &-super-prev-icon,
  &-super-next-icon {
    position: relative;
    display: inline-block;
    width: @picker-arrow-size;
    height: @picker-arrow-size;

    &::before {
      position: absolute;
      top: 0;
      left: 0;
      display: inline-block;
      width: @picker-arrow-size;
      height: @picker-arrow-size;
      border: 0 solid currentColor;
      border-width: 1.5px 0 0 1.5px;
      content: '';
    }
  }

  &-super-prev-icon,
  &-super-next-icon {
    &::after {
      position: absolute;
      top: ceil((@picker-arrow-size / 2));
      left: ceil((@picker-arrow-size / 2));
      display: inline-block;
      width: @picker-arrow-size;
      height: @picker-arrow-size;
      border: 0 solid currentColor;
      border-width: 1.5px 0 0 1.5px;
      content: '';
    }
  }

  &-prev-icon,
  &-super-prev-icon {
    transform: rotate(-45deg);
  }

  &-next-icon,
  &-super-next-icon {
    transform: rotate(135deg);
  }

  // ======================== Body ========================
  &-content {
    width: 100%;
    table-layout: fixed;
    border-collapse: collapse;

    th,
    td {
      position: relative;
      min-width: 24px;
      font-weight: 400;
    }

    th {
      height: 30px;
      color: @text-color;
      line-height: 30px;
    }
  }

  .picker-cell-inner(@cellClassName) {
    &::before {
      position: absolute;
      top: 50%;
      right: 0;
      left: 0;
      z-index: 1;
      height: @picker-panel-cell-height;
      transform: translateY(-50%);
      transition: all @animation-duration-slow;
      content: '';
    }

    // >>> Default
    .@{cellClassName} {
      position: relative;
      z-index: 2;
      display: inline-block;
      min-width: @picker-panel-cell-height;
      height: @picker-panel-cell-height;
      line-height: @picker-panel-cell-height;
      border-radius: @border-radius-base;
      transition: background @animation-duration-slow, border @animation-duration-slow;
    }

    // >>> Hover
    &:hover:not(&-in-view),
    &:hover:not(&-selected):not(&-range-start):not(&-range-end):not(&-range-hover-start):not(&-range-hover-end) {
      .@{cellClassName} {
        background: @picker-basic-cell-hover-color;
      }
    }

    // >>> Today
    &-in-view&-today .@{cellClassName} {
      &::before {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 1;
        border: @border-width-base @border-style-base @primary-color;
        border-radius: @border-radius-base;
        content: '';
      }
    }

    // >>> In Range
    &-in-view&-in-range {
      position: relative;

      &::before {
        background: @picker-basic-cell-active-with-range-color;
      }
    }

    // >>> Selected
    &-in-view&-selected .@{cellClassName},
    &-in-view&-range-start .@{cellClassName},
    &-in-view&-range-end .@{cellClassName} {
      color: @text-color-inverse;
      background: @primary-color;
    }

    &-in-view&-range-start:not(&-range-start-single),
    &-in-view&-range-end:not(&-range-end-single) {
      &::before {
        background: @picker-basic-cell-active-with-range-color;
      }
    }

    &-in-view&-range-start::before {
      left: 50%;
    }

    &-in-view&-range-end::before {
      right: 50%;
    }

    // >>> Range Hover
    &-in-view&-range-hover-start:not(&-in-range):not(&-range-start):not(&-range-end),
    &-in-view&-range-hover-end:not(&-in-range):not(&-range-start):not(&-range-end),
    &-in-view&-range-hover-start&-range-start-single,
    &-in-view&-range-hover-start&-range-start&-range-end&-range-end-near-hover,
    &-in-view&-range-hover-end&-range-start&-range-end&-range-start-near-hover,
    &-in-view&-range-hover-end&-range-end-single,
    &-in-view&-range-hover:not(&-in-range) {
      &::after {
        position: absolute;
        top: 50%;
        z-index: 0;
        height: 24px;
        border-top: @border-width-base dashed @picker-date-hover-range-border-color;
        border-bottom: @border-width-base dashed @picker-date-hover-range-border-color;
        transform: translateY(-50%);
        transition: all @animation-duration-slow;
        content: '';
      }
    }

    // Add space for stash
    &-range-hover-start::after,
    &-range-hover-end::after,
    &-range-hover::after {
      right: 0;
      left: 2px;
    }

    // Hover with in range
    &-in-view&-in-range&-range-hover::before,
    &-in-view&-range-start&-range-hover::before,
    &-in-view&-range-end&-range-hover::before,
    &-in-view&-range-start:not(&-range-start-single)&-range-hover-start::before,
    &-in-view&-range-end:not(&-range-end-single)&-range-hover-end::before,
    .@{picker-prefix-cls}-panel
      > :not(.@{picker-prefix-cls}-date-panel)
      &-in-view&-in-range&-range-hover-start::before,
    .@{picker-prefix-cls}-panel
      > :not(.@{picker-prefix-cls}-date-panel)
      &-in-view&-in-range&-range-hover-end::before {
      background: @picker-date-hover-range-color;
    }

    // range start border-radius
    &-in-view&-range-start:not(&-range-start-single):not(&-range-end) .@{cellClassName} {
      border-radius: @border-radius-base 0 0 @border-radius-base;
    }

    // range end border-radius
    &-in-view&-range-end:not(&-range-end-single):not(&-range-start) .@{cellClassName} {
      border-radius: 0 @border-radius-base @border-radius-base 0;
    }

    // DatePanel only
    .@{picker-prefix-cls}-date-panel &-in-view&-in-range&-range-hover-start .@{cellClassName},
    .@{picker-prefix-cls}-date-panel &-in-view&-in-range&-range-hover-end .@{cellClassName} {
      &::after {
        position: absolute;
        top: 0;
        bottom: 0;
        z-index: -1;
        background: @picker-date-hover-range-color;
        transition: all @animation-duration-slow;
        content: '';
      }
    }

    .@{picker-prefix-cls}-date-panel
      &-in-view&-in-range&-range-hover-start
      .@{cellClassName}::after {
      right: -5px - @border-width-base;
      left: 0;
    }

    .@{picker-prefix-cls}-date-panel &-in-view&-in-range&-range-hover-end .@{cellClassName}::after {
      right: 0;
      left: -5px - @border-width-base;
    }

    // Hover with range start & end
    &-range-hover&-range-start::after {
      right: 50%;
    }

    &-range-hover&-range-end::after {
      left: 50%;
    }

    // Edge start
    tr > &-in-view&-range-hover:first-child::after,
    tr > &-in-view&-range-hover-end:first-child::after,
    &-in-view&-start&-range-hover-edge-start&-range-hover-edge-start-near-range::after,
    &-in-view&-range-hover-edge-start:not(&-range-hover-edge-start-near-range)::after,
    &-in-view&-range-hover-start::after {
      left: 6px;
      border-left: @border-width-base dashed @picker-date-hover-range-border-color;
      border-top-left-radius: @border-radius-base;
      border-bottom-left-radius: @border-radius-base;
    }

    // Edge end
    tr > &-in-view&-range-hover:last-child::after,
    tr > &-in-view&-range-hover-start:last-child::after,
    &-in-view&-end&-range-hover-edge-end&-range-hover-edge-end-near-range::after,
    &-in-view&-range-hover-edge-end:not(&-range-hover-edge-end-near-range)::after,
    &-in-view&-range-hover-end::after {
      right: 6px;
      border-right: @border-width-base dashed @picker-date-hover-range-border-color;
      border-top-right-radius: @border-radius-base;
      border-bottom-right-radius: @border-radius-base;
    }

    // >>> Disabled
    &-disabled {
      color: @disabled-color;
      pointer-events: none;

      .@{cellClassName} {
        background: transparent;
      }

      &::before {
        background: @picker-basic-cell-disabled-bg;
      }
    }
    &-disabled&-today .@{cellClassName}::before {
      border-color: @disabled-color;
    }
  }

  &-cell {
    padding: 3px 0;
    color: @disabled-color;
    cursor: pointer;

    // In view
    &-in-view {
      color: @text-color;
    }

    .picker-cell-inner(~'@{picker-cell-inner-cls}');
  }

  &-decade-panel,
  &-year-panel,
  &-quarter-panel,
  &-month-panel {
    .@{picker-prefix-cls}-content {
      height: @picker-panel-without-time-cell-height * 4;
    }

    .@{picker-cell-inner-cls} {
      padding: 0 @padding-xs;
    }
  }

  &-quarter-panel {
    .@{picker-prefix-cls}-content {
      height: 56px;
    }
  }

  // ======================== Footer ========================
  &-footer {
    width: min-content;
    min-width: 100%;
    line-height: @picker-text-height - 2 * @border-width-base;
    text-align: center;
    border-bottom: @border-width-base @border-style-base transparent;

    .@{picker-prefix-cls}-panel & {
      border-top: @border-width-base @border-style-base @picker-border-color;
    }

    &-extra {
      padding: 0 @padding-sm;
      line-height: @picker-text-height - 2 * @border-width-base;
      text-align: left;

      &:not(:last-child) {
        border-bottom: @border-width-base @border-style-base @picker-border-color;
      }
    }
  }

  &-now {
    text-align: left;
  }

  &-today-btn {
    color: @link-color;

    &:hover {
      color: @link-hover-color;
    }

    &:active {
      color: @link-active-color;
    }

    &&-disabled {
      color: @disabled-color;
      cursor: not-allowed;
    }
  }

  // ========================================================
  // =                       Special                        =
  // ========================================================

  // ===================== Decade Panel =====================
  &-decade-panel {
    .@{picker-cell-inner-cls} {
      padding: 0 (@padding-xs / 2);
    }

    .@{picker-prefix-cls}-cell::before {
      display: none;
    }
  }

  // ============= Year & Quarter & Month Panel =============
  &-year-panel,
  &-quarter-panel,
  &-month-panel {
    @hover-cell-fixed-distance: (
      (((@picker-panel-width - @padding-xs * 2) / 3) - @picker-year-month-cell-width) / 2
    );

    .@{picker-prefix-cls}-body {
      padding: 0 @padding-xs;
    }