// General footer styles

.usa-footer {
  @include border-box-sizing;
  @include typeset($theme-footer-font-family);
  overflow: hidden;
}

.usa-footer__return-to-top {
  @include u-padding-y(2.5);
  line-height: line-height($theme-footer-font-family, 1);

  a {
    @include typeset-link;
  }
}

.usa-footer__nav {
  @include u-margin-x('auto');
  @include u-padding-x(0);
  border-bottom: 1px solid color('base-light');
  max-width: units('desktop');

  @include at-media('mobile-lg') {
    @include add-responsive-site-margins;
    border-bottom: none;
  }
}

.usa-footer__primary-section {
  background-color: color('base-lightest');
}

.usa-footer__primary-content {
  line-height: line-height($theme-footer-font-family, 2);
}

.usa-footer__primary-link a,
.usa-footer__secondary-link a {
  text-decoration: none;
  &:hover {
    text-decoration: underline;
  }
}

.usa-footer__primary-link {
  @include u-padding-x($theme-site-margins-mobile-width);
  @include u-padding-y(2);
  @include u-text('ink', 'no-underline', 'bold');
  display: block;

  @include at-media('mobile-lg') {
    @include u-padding-x(0);
  }

  &:hover {
    cursor: pointer;
    text-decoration: underline;
  }
}

.usa-footer__secondary-link {
  line-height: line-height($theme-footer-font-family, 2);
  margin-left: units(2);
  padding: 0;

  a {
    @include typeset-link;
  }

  & + .usa-footer__secondary-link {
    padding-top: units(2);
  }

  @include at-media('mobile-lg') {
    margin-left: 0;
  }
}

.usa-footer__contact-info {
  display: inline-block;
  line-height: line-height($theme-footer-font-family, 2);

  a {
    @include u-text('ink', 'no-underline');
  }

  &:hover {
    text-decoration: underline;
  }

  @include at-media('mobile-lg') {
    @include u-flex('justify-end');
    margin-top: units(1);
  }
}

.usa-footer__primary-content {
  border-top: 1px solid color('base-light');

  @include at-media('mobile-lg') {
    border: none;
  }
}

.usa-sign-up {
  padding-bottom: units(4);
  padding-top: units(3);

  .usa-label,
  .usa-button {
    margin-top: units(1.5);
  }
}

.usa-sign-up__heading {
  @include h3;
  margin: 0;
}

.usa-footer__secondary-section {
  @include u-padding-y(2.5);
  background-color: color('base-lighter');

  a {
    color: color('ink');
  }
}

.usa-footer__logo {
  @include u-margin-y(1);
  @include at-media('mobile-lg') {
    @include u-margin-y(0);
    @include u-flex('align-center');
  }
}

.usa-footer__logo-img {
  max-width: units(10);
}

.usa-footer__logo-heading {
  @include h3;
  @include u-margin-y(1);
  line-height: line-height('heading', 1);
}

.usa-footer__contact-links {
  margin-top: units(3);

  @include at-media('mobile-lg') {
    margin-top: 0;
    text-align: right;
  }
}

.usa-footer__contact-heading {
  @include h3;
  margin-top: 0;

  @include at-media('mobile-lg') {
    @include u-margin-y(0.5);
  }
}

.usa-footer__social-links {
  line-height: line-height($theme-footer-font-family, 1);
  padding-bottom: units(1);

  a {
    text-decoration: none;
  }

  @include at-media('mobile-lg') {
    @include u-flex('justify-end');
  }
}

.usa-social-link {
  $background-height: units(3); // Height of icon within hit area.
  @include u-square($size-touch-target);
  background-position: center center;
  background-size: auto $background-height;
  background-color: color('black-transparent-10');
  display: inline-block;

  span {
    @include sr-only();
  }
}

.usa-social-link--facebook {
  @include add-background-svg('social-icons/facebook25');
}

.usa-social-link--twitter {
  @include add-background-svg('social-icons/twitter16');
}

.usa-social-link--youtube {
  @include add-background-svg('social-icons/youtube15');
}

.usa-social-link--rss {
  @include add-background-svg('social-icons/rss25');
}

.usa-footer__address {
  @include at-media('mobile-lg') {
    @include u-flex('justify-end');
  }
}

// Slim footer styles

.usa-footer--slim {
  .usa-footer__nav {
    @include at-media('desktop') {
      @include u-padding-x(0);
    }
  }

  .usa-footer__address {
    @include u-padding-y(2);
    @include u-padding-x($theme-site-margins-mobile-width);
    @include at-media('mobile-lg') {
      @include u-padding(0);
    }
  }

  .usa-footer__logo {
    @include u-flex('align-center');
  }

  .usa-footer__logo-img {
    max-width: units(6);
  }

  .usa-footer__contact-info {
    @include at-media('mobile-lg') {
      @include u-padding-y(2);
      margin-top: 0;
    }
  }
}

// Big footer styles

.usa-footer--big {
  .usa-footer__nav {
    @include u-margin-x($theme-site-margins-mobile-width * -1);
    @include at-media('mobile-lg') {
      border-bottom: 1px solid color('base-light');
      padding-top: units(4);
    }
    @include at-media('tablet') {
      @include u-margin-x(0);
      @include u-padding-x(0);
      border-bottom: none;
    }
  }

  .usa-footer__primary-link {
    @include h4;
    @include add-background-svg('arrow-down');
    background-position: units(2) center;
    background-size: units(1.5);
    line-height: line-height('heading', 2);
    margin: 0;
    padding-left: units(4);

    @include at-media('mobile-lg') {
      @include u-padding-y(0);
      background: none;
      margin-bottom: units(1);
      padding-left: 0;

      &:hover {
        cursor: auto;
        text-decoration: none;
      }
    }
  }

  .usa-footer__primary-content--collapsible {
    &.hidden {
      .usa-list--unstyled {
        display: none;
      }

      .usa-footer__primary-link {
        @include add-background-svg('arrow-right');
        cursor: pointer;

        @include at-media('mobile-lg') {
          background: none;
          margin: 0;
          padding-left: 0;
        }
      }
    }

    .usa-list--unstyled {
      @include u-padding-x($theme-site-margins-mobile-width);
      padding-bottom: units(2.5);

      @include at-media('mobile-lg') {
        @include u-padding-x(0);
        padding-bottom: units(4);
        padding-top: units(1.5);
      }
    }
  }
}