discourse/app/assets/stylesheets/common/components/date-range-picker.scss

@use "lib/viewport";

.d-date-range-picker {
  --d-date-range-picker-nav-size: var(--space-10);
  display: grid;
  grid-template-columns: max-content 1fr;
  background: var(--secondary);
  min-width: 0;
  box-sizing: border-box;

  @include viewport.from(sm) {
    width: 40rem;
    max-width: 100vw;
  }

  @include viewport.until(sm) {
    grid-template-columns: 1fr;
    grid-template-rows: max-content 1fr;
  }

  &__presets {
    display: flex;
    flex-direction: column;
    padding: var(--space-2) 0;
    border-right: 1px solid var(--primary-low);
    min-width: min-content;

    @include viewport.until(sm) {
      flex-direction: row;
      gap: var(--space-1);
      padding: var(--space-2) var(--space-4);
      border-right: none;
      border-bottom: 1px solid var(--primary-low);
      min-width: 0;
      overflow-x: auto;
      scrollbar-width: none;
      mask-image: linear-gradient(
        to right,
        transparent 0,
        black var(--space-4),
        black calc(100% - var(--space-6)),
        transparent 100%
      );

      &::-webkit-scrollbar {
        display: none;
      }
    }
  }

  &__preset {
    text-align: left;
    background: transparent;
    border: 0;
    padding: var(--space-2) var(--space-3);
    font: inherit;
    color: var(--primary);
    cursor: pointer;
    border-radius: 0;

    &:hover {
      background: var(--primary-low);
    }

    &.is-active {
      background: var(--tertiary-low);
      font-weight: 700;
    }

    @include viewport.until(sm) {
      flex-shrink: 0;
      border: 1px solid var(--primary-low);
      border-radius: var(--space-1);
      white-space: nowrap;
    }
  }

  &__body {
    display: flex;
    flex-direction: column;
    padding: var(--space-2);
    min-width: 0;
  }

  &__nav {
    width: var(--d-date-range-picker-nav-size);

    &.--prev {
      grid-column: 1;
    }

    &.--next {
      grid-column: 3;
    }

    &:hover {
      background: var(--primary-low);
      color: var(--primary);
    }
  }

  &__months {
    display: flex;
    gap: var(--space-4);
    min-width: 0;

    @include viewport.until(sm) {
      gap: 0;
    }
  }

  &__month {
    flex: 1;
    min-width: 0;
  }

  &__month-header {
    display: grid;
    grid-template-columns:
      var(--d-date-range-picker-nav-size)
      1fr
      var(--d-date-range-picker-nav-size);
    align-items: center;
    min-height: var(--d-date-range-picker-nav-size);
    font-weight: 500;
    padding-bottom: var(--space-2);
  }

  &__month-title {
    grid-column: 2;
    text-align: center;
  }

  &__weekdays {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    color: var(--primary-medium);
    font-size: var(--font-down-2);
    text-align: center;
    padding-bottom: var(--space-1);
  }

  &__grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
  }

  &__week {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  &__day {
    background: transparent;
    border: 0;
    padding: 0;
    border-radius: var(--space-1);
    color: var(--primary);
    aspect-ratio: 1;
    font-size: var(--font-down-2-rem);

    @include viewport.until(sm) {
      font-size: var(--font-down-1-rem);
    }

    &:hover:not(.--disabled) {
      background: var(--tertiary-low);
    }

    &.--disabled {
      color: var(--primary-low-mid);
      cursor: not-allowed;
    }

    &.--in-range {
      background: var(--tertiary-very-low, var(--tertiary-low));
    }

    &.--hover-preview,
    &.--hover-end {
      background: var(--tertiary-low);
    }

    &.--start,
    &.--end {
      background: var(--tertiary);
      color: var(--secondary);
      font-weight: 600;

      &:hover {
        background: var(--tertiary-hover, var(--tertiary));
      }
    }

    // range cells form a continuous strip, rounded only where the strip ends:
    // at a cap, a row edge, or a month edge;
    // :where keeps this reset below the corner rules' specificity
    &:where(.--in-range, .--hover-preview, .--hover-end, .--start, .--end) {
      border-radius: 0;
    }

    &.--start,
    &.--month-start,
    &:first-child {
      border-start-start-radius: var(--space-1);
      border-end-start-radius: var(--space-1);
    }

    &.--end,
    &.--hover-end,
    &.--month-end,
    &:last-child {
      border-start-end-radius: var(--space-1);
      border-end-end-radius: var(--space-1);
    }

    &:focus-visible {
      outline: 2px solid var(--tertiary);
      outline-offset: -2px;
    }
  }

  &__inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
    margin-top: var(--space-3);
  }

  &__input {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid var(--primary-low);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--space-1);
    background: var(--secondary);
    color: var(--primary);
    font-size: var(--font-down-1);
    min-height: 1.75rem;

    &:focus-visible {
      outline: 2px solid var(--tertiary);
      outline-offset: -1px;
    }
  }

  &__footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    margin-top: var(--space-3);
  }
}