.catalog {
  .banner .container {
    height: rem(381);
  }

  .banner .primary-navigation {
    height: rem(381);
  }

  .page-header {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: rem(381);
    margin-top: rem(-381);

    h1 {
      color: var(--primary, $brand-primary);
      margin-bottom: 2rem;
      font-size: rem(36);
      line-height: 0.55556;
      letter-spacing: 0.1125rem;
    }
  }

  .network-catalog {
    width: 100%;
    padding-bottom: rem(152);
  }

  .controls {
    width: 100%;
  }

  .filters,
  .search,
  .sort {
    width: 100%;
    border-top: solid 2px var(--accent, $brand-accent);
    background: $white;

    a {
      display: flex;
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      padding: rem(16) rem(19);
      font-size: rem(16);
      font-weight: 600;
      font-family: $font-family-sans-serif;
      letter-spacing: rem(0.67);
      color: $black;

      &:hover,
      &:focus {
        background: #fafdff;
        color: var(--link, $brand-primary);
      }
    }

    .has-active-child > a {
      background: var(--link, $brand-primary);
      color: $white;

      .arrow {
        path {
          fill: $white;
        }
      }
    }

    ul {
      margin: 0;
      padding: 0;
      list-style: none;

      li {
        font-size: rem(16);
        font-family: $font-family-sans-serif;
        letter-spacing: rem(0.67);

        a {
          display: flex;
          flex-direction: row;
          justify-content: space-between;
          align-items: center;
          font-weight: normal;
          cursor: pointer;

          .close {
            display: inline-block;
            float: right;
            margin-top: rem(-2);
            font-size: rem(20);
            opacity: 0;
            transition: opacity 0.5s;
          }
        }

        a.is-active {
          font-weight: 600;
          color: var(--link, $brand-primary);

          .close {
            opacity: 1;
          }
        }
      }
    }
  }

  .arrow {
    path {
      fill: var(--link, $brand-primary);
    }
  }

  .is-active > a .arrow {
    transform: rotate(180deg);
  }

  .filters {
    .filter-groups {
      display: none;
      border-top: solid 2px var(--accent, $brand-accent);

      h3 {
        margin: 0;
        border-top: solid 1px $light-gray;
      }

      h3:first-of-type {
        border-top: none;
      }
    }

    .filter-list {
      display: none;
    }

    &.is-active {
      .filter-groups {
        display: block;
      }
    }

    .is-active ul {
      display: block;
    }
  }

  .search {
    display: none;
  }

  .sort {
    border-bottom: solid 2px var(--accent, $brand-accent);

    .sorts {
      display: none;
      border-top: solid 2px var(--accent, $brand-accent);
    }

    &.is-active {
      .sorts {
        display: block;
      }
    }
  }

  .books {
    align-self: flex-start;
    width: percent(358, 360);
    margin: rem(32) 0 0 percent(10.5, 360);
    padding: 0;
  }

  .book {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    width: percent(165, 358);
    margin: 0 percent(9, 358) rem(8) 0;
    height: rem(230);
    float: left;
    padding: 1.5rem rem(8) rem(26);
    border: solid 2px var(--bg, $brand-accent);
    background: var(--bg, $brand-accent);

    p {
      margin: 0;
    }

    a {
      font-family: $font-family-sans-serif;
      color: $white;
      text-decoration: none;
    }

    .subject {
      height: rem(44);
      font-size: rem(14);
    }

    .title {
      height: rem(118);
      font-size: rem(16);
      font-weight: 600;
      line-height: (20/16);
    }

    .read-more {
      font-size: rem(14);
    }
  }

  .catalog-navigation {
    display: flex;
    flex-direction: row;
    justify-content: center;
    margin-top: rem(83);
    align-items: baseline;
    font-family: $font-family-sans-serif;

    a {
      color: $black;

      &:hover,
      &:focus {
        color: var(--link, $brand-primary);
      }
    }

    .previous,
    .next {
      display: block;
      margin: 0 rem(26);
      font-family: Karla-Regular;
      font-size: rem(16);

      svg {
        width: rem(16.2);
        height: rem(12.5);
        margin: 0 rem(6);

        path {
          fill: var(--link, $brand-primary);
        }
      }
    }

    .pages {
      display: inline-block;
      border-bottom: solid 2px #ececec;

      a,
      span {
        display: inline-block;
        width: rem(41);
        padding: rem(8) 0;
        font-size: rem(24);
        text-align: center;
      }

      .current {
        border-bottom: solid rem(6) var(--primary, $brand-primary);
      }
    }
  }
}

@media (min-width: 768px) {
  .catalog {
    .controls {
      width: percent(706, 768);
      height: rem(52);
      margin: rem(60) percent(29, 768) rem(20) percent(33, 768);

      .filters,
      .search,
      .sort {
        position: relative;
        border-top: 0;
        border-bottom: solid 2px var(--accent, $brand-accent);
        z-index: 99;
      }

      .filters {
        float: left;
        width: rem(360);

        .filter-groups {
          border-right: solid 1px #ececec;
          border-left: solid 1px #ececec;
        }
      }

      .sort {
        float: right;
        width: rem(160);

        .sorts {
          border-right: solid 1px #ececec;
          border-bottom: solid 1px #ececec;
          border-left: solid 1px #ececec;
        }
      }
    }

    .books {
      align-self: flex-start;
      width: percent(735, 768);
      margin-bottom: rem(15);
      margin-left: percent(24, 768);
    }

    .book {
      width: percent(230, 735);
      height: rem(260);
      margin: 0 percent(15, 735) 2rem 0;
      padding: 0 rem(14) rem(21.35);

      .subject {
        height: rem(45.85);
        font-size: rem(18);
      }

      .title {
        height: rem(147.65);
        font-size: rem(22);
        font-weight: 600;
        line-height: (40/30);
      }

      .read-more {
        font-size: rem(16);
      }
    }
  }
}

@media (min-width: $medium) {
  .catalog {
    .page-header {
      h1 {
        font-size: rem(72);
      }
    }
  }
}

@media #{$breakpoint-large} {
  .catalog {
    .banner {
      .container {
        height: rem(450);
      }

      .primary-navigation {
        height: 40px;
      }

      .brand {
        text-align: center;

        img {
          max-height: rem(60);
        }
      }
    }

    .page-header {
      height: rem(360);
      margin-top: rem(-360);
    }
  }
}

@media (min-width: $extra-large) {
  .catalog {
    .main {
      width: rem(1535);
      margin: 0 auto;
    }

    .network-catalog {
      margin-top: rem(205);
    }

    .controls {
      width: 100%;
      margin: 0 0 rem(64);

      .filters {
        width: rem(286);

        .filter-groups {
          border-right: 0;
          border-top: 0;
          border-left: 0;

          .subjects,
          .licenses {
            border-bottom: solid 1px #ececec;
          }
        }

        &.is-active {
          border-bottom: 0;

          .filter-groups {
            border-top: solid 2px var(--accent, $brand-accent);
          }
        }

        ul li {
          a {
            padding-top: 0;
            padding-bottom: 0;
            line-height: 2;
          }

          &:last-child a {
            padding-bottom: 1rem;
          }
        }
      }

      .sort {
        .sorts {
          border-top: solid 2px var(--accent, $brand-accent);
          border-right: 0;
          border-left: 0;
        }
      }
    }

    .books {
      width: percent(1221.5, 1535);
      margin: 0 0 0 percent(316, 1535);
    }

    .book {
      width: percent(367, 1221.5);
      height: rem(386);
      margin: 0 0 2rem percent(39.5, 1221.5);
      padding: 1.5rem 1.85rem 2.1875rem;

      .subject {
        height: 4.625rem;
        font-size: rem(24);
      }

      .title {
        height: 13rem;
        font-size: rem(30);
        font-weight: 500;
        line-height: (40/30);
      }

      .read-more {
        font-size: rem(18);
      }
    }
  }
}