@use "sass:math";

@use "uswds-core" as *;

// Default styles
.usa-button-group {
  @include u-margin-y(0);
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  list-style-type: none;
  margin-left: units(-0.5);
  margin-right: units(-0.5);
  padding-left: 0;

  @include at-media("mobile-lg") {
    flex-wrap: nowrap;
    align-items: stretch;
    flex-direction: row;
  }

  // Styles for nested button groups
  .usa-button-group {
    height: 100%;

    .usa-button-group__item {
      @include at-media("mobile-lg") {
        margin-top: 0;
        margin-bottom: 0;
      }
    }

    // Styles for nested segmented button groups
    &--segmented {
      .usa-button-group__item {
        margin-top: 0;
        margin-bottom: 0;
      }
    }
  }
}

.usa-button-group__item {
  margin: units(0.5);

  &:last-child {
    @include at-media("mobile-lg") {
      margin-right: 0;
    }
  }

  .usa-button {
    height: 100%;
    margin-left: 0;
    margin-right: 0;
  }
}

// Segemented styles
.usa-button-group--segmented {
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: space-between;
  margin-left: 0;
  margin-right: 0;

  @include at-media("mobile-lg") {
    justify-content: flex-start;
  }

  .usa-button {
    position: relative;
    width: calc(100% + #{units($theme-button-stroke-width)});

    @include at-media("mobile-lg") {
      width: auto;
    }

    // Ensures edges are not cut off when interacting with outline buttons
    &:hover,
    &:active {
      z-index: 2;
    }

    &:focus {
      z-index: 3;
    }
  }

  .usa-button-group__item {
    margin-left: 0;
    margin-right: 0;
    width: 100%;

    @include at-media("mobile-lg") {
      width: auto;
    }

    &:first-child > .usa-button {
      border-top-right-radius: 0;
      border-bottom-right-radius: 0;
      margin-right: -(math.div(units($theme-button-stroke-width), 2));
    }

    &:last-child > .usa-button {
      border-top-left-radius: 0;
      border-bottom-left-radius: 0;
      margin-right: 0;
      margin-left: -(units($theme-button-stroke-width));
      width: calc(100% + #{units($theme-button-stroke-width)});

      @include at-media("mobile-lg") {
        margin-left: -(math.div(units($theme-button-stroke-width), 2));
        width: auto;
      }
    }

    &:where(:not(:first-child):not(:last-child)) > .usa-button {
      border-radius: 0;
      margin-right: -(math.div(units($theme-button-stroke-width), 2));
      margin-left: -(math.div(units($theme-button-stroke-width), 2));
    }

    // Creates separators
    &:where(:not(:last-child)) {
      .usa-button::before {
        border-right: 1px solid color("primary-dark");
        bottom: 0;
        content: "";
        display: block;
        height: 100%;
        position: absolute;
        right: 1px;
        top: 0;
        width: 1px;
        z-index: 3;
      }

      .usa-button--secondary::before {
        border-right-color: color("secondary-dark");
      }

      .usa-button--accent-cool::before {
        border-right-color: color("accent-cool-dark");
      }

      .usa-button--base::before {
        border-right-color: color("base-dark");
      }

      [class*="usa-button"]:disabled::before,
      [class*="usa-button"][aria-disabled="true"]::before {
        border-right-color: color($theme-body-background-color);
      }

      .usa-button:active::before,
      .usa-button--outline::before {
        display: none;
      }
    }
  }
}