@import "../../../settings/all";
@import "../../../tools/all";
@import "../../../helpers/all";

@import "../../../helpers/typography";

@include govuk-exports("govuk/component/sdn-header") {
  $icon-search: url("../../../assets/images/icon-search.svg");
  $sdn-header-background-from: #2e3ac7;
  $sdn-header-background-to: #448bef;
  $sdn-header-placeholder: #333333;
  $sdn-search-button-color: transparent;
  $sdn-search-button-background: #ffffff;
  $sdn-header-text-color: #ffffff;
  $sdn-dropdown-toggle-hover-color: #aad3fb;
  $sdn-dropdown-background: #ffffff;
  $sdn-dropdown-color: #333333;
  $sdn-dropdown-hover-background: #448bef;
  $sdn-dropdown-hover-color: #ffffff;
  $sdn-dropdown-border-color: #e6e6e6;
  $sdn-header-height: 55px;

  $sdn-header-border-color: rgba(255, 255, 255, .2);

  .sdn-header {
    @include govuk-font($size: 14);
    border-bottom: 1px solid $sdn-header-border-color;
    background: linear-gradient(90deg, $sdn-header-background-from 0%, $sdn-header-background-to 100%);
  }

  .sdn-header__product-name {
    @include govuk-font($size: 18);
  }

  .sdn-header__container {
    display: -ms-flexbox;
    display: flex;
    position: relative;
    height: $sdn-header-height;
    -ms-flex-align: center;
        align-items: center;
    -ms-flex-pack: justify;
        justify-content: space-between;

    &--logo {
      > a {
        display: -ms-flexbox;
        display: flex;

        > img {
          height: 20px;
          @include mq ($from: tablet) {
            height: 25px;
          }
        }
      }
    }
  }

  .sdn-header__link {
    margin: 10px 0;
    line-height: 20px;

    text-decoration: none;

    &:link,
    &:visited {
      color: $sdn-header-text-color;
    }

    &--active,
    &:hover {
      text-decoration: underline;
    }

    // When focussed, the text colour needs to be darker to ensure that colour
    // contrast is still acceptable
    &:focus {
      @include govuk-focused-text;
      color: $govuk-focus-text-colour;
    }
  }

  .sdn-header__navigation {
    padding-left: 0;
    list-style: none;

    > li {
      display: inline-block;
      vertical-align: middle;

      & + li {
        margin-left: 40px;

        &:before {
          content: "";
          position: absolute;
          top: 0;
          bottom: 0;
          margin-left: -22px;
          border-left: 1px solid $sdn-header-border-color;
        }
      }

      &.sdn-header__form {
        & + li {
          margin-left: 20px;

          &:before {
            content: none;
          }
        }
      }
    }
  }

  .sdn-header__form {
    max-width: 200px;

    input {
      @include govuk-font($size: 16);

      box-sizing: border-box;
      width: 100%;
      height: 40px;
      padding: 0 40px 0 12px;
      border: 0;
      border-radius: 3px;

      &.govuk-input {
        outline: transparent;
      }

      &:-webkit-input-placeholder {
        opacity: .6;
        color: $sdn-header-placeholder;
      }

      &:-moz-placeholder {
        opacity: .6;
        color: $sdn-header-placeholder;
      }

      &:-ms-input-placeholder {
        opacity: .6;
        color: $sdn-header-placeholder;
      }
    }

    button {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      width: 40px;
      padding: 0;
      border: 0;
      border-radius: 3px;
      opacity: .5;
      color: $sdn-search-button-color;
      background: $sdn-search-button-background $icon-search no-repeat center center;
      background-size: 18px 18px;

      &:focus {
        outline: transparent;
      }
    }

    form {
      position: relative;

      &:hover {
        button {
          opacity: 1;
        }
      }
    }

    @media (max-width: 400px) {
      width: 100%;
      max-width: initial;
    }
  }

  .sdn-header__subnavigation {
    position: relative;
  }

  .sdn-header__dropdown {
    @include govuk-font($size: 14);
    display: none;
    position: absolute;
    z-index: 9999;
    right: 0;
    margin: 10px 0 0;
    padding: 5px 0;
    border: 1px solid $sdn-dropdown-border-color;
    border-radius: 3px;
    color: $sdn-dropdown-color;
    background-color: $sdn-dropdown-background;
    list-style: none;

    a {
      display: block;
      padding: 8px 20px;
      color: inherit;
      text-decoration: none;
      white-space: nowrap;

      &:hover {
        color: $sdn-dropdown-hover-color;
        background-color: $sdn-dropdown-hover-background;
      }
    }
  }

  .sdn-header__dropdown-toggle {
    display: block;
    position: relative;
    margin-right: 15px;

    &:hover {
      color: $sdn-dropdown-toggle-hover-color;
      text-decoration: none;
    }

    &:after {
      content: " \25BE";
      position: absolute;
      top: 0;
      right: -15px;
      font-size: 18px;
    }

    &:focus {
      outline: transparent;
      color: $sdn-header-text-color;
      background-color: transparent;

      & + .sdn-header__dropdown {
        display: block;
      }
    }
  }

  .sdn-header__fixed-width-text {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;

    @include mq ($from: desktop) {
      max-width: 195px;
    }

    @media (max-width: 400px) {
      width: 100%;
      max-width: 220px;
    }
  }

  .sdn-header__menu-button {
    @include govuk-font($size: 16);
    display: none;
    position: absolute;
    //top: govuk-spacing(4);
    top: 15px;
    right: 0;
    margin: 0;
    padding: 0;
    border: 0;
    color: $sdn-header-text-color;
    background: none;
    line-height: 20px;

    &:hover {
      text-decoration: underline;
    }

    &:after {
      @include govuk-shape-arrow($direction: down, $base: 10px, $display: inline-block);
      content: "";
      margin-left: govuk-spacing(1);
    }

    @include mq ($from: tablet) {
      top: govuk-spacing(3);
    }
  }

  $list-of-breakpoints: 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200;

  @each $breakpoint in $list-of-breakpoints {
    .#{sdn-header}-#{$breakpoint} {

      @include mq ($until: $breakpoint * 1px) {
        .sdn-header__container {
          height: auto;
          padding: 5px 0;
          -ms-flex-wrap: wrap;
              flex-wrap: wrap;
        }

        .sdn-header__menu-button {
          display: block;
        }

        .sdn-header__content {
          width: 100%;
        }

        .sdn-header__fixed-width-text {
          max-width: 100%;
        }

        .sdn-header__dropdown-toggle {
          margin-top: 0;
          margin-bottom: 0;
        }

        .sdn-header__form {
          max-width: initial;
          margin-right: 0;
          padding-right: 0;

          input {
            height: 30px;
          }
        }

        .sdn-header__dropdown {
          position: static;
        }

        .sdn-header__navigation {
          display: none;
          position: relative;
          margin-top: 0;
          overflow: hidden;

          &--open {
            display: block;
          }

          > li {
            display: list-item;
            position: relative;
            padding: 10px 0;
            border-bottom: 1px solid $sdn-header-background-to;
            white-space: nowrap;

            & + li {
              margin-left: 0;

              &:before {
                content: none;
              }
            }
          }
        }
      }
    }
  }
}