koel/resources/assets/sass/partials/_mixins.scss

@mixin vertical-center() {
  display: flex;
  align-items: center;
  justify-content: center;
}

@mixin artist-album-wrapper() {
  justify-content: space-between;
  flex-wrap: wrap;
  display: flex;
  align-content: flex-start;

  .item {
    align-self: flex-start;
  }
}

@mixin artist-album-card() {
  .item {
    flex-direction: column;
    margin-bottom: 16px;
    width: 23.5%;
    position: relative;

    .as-list & {
      flex-direction: row;
      display: flex;
      width: 100% !important;

      .cover {
        flex: 0 0 80px;
        height: 80px;
        padding-top: 0;
      }

      footer {
        flex: 1;
      }
    }

    .as-list &.filler {
      display: none;
    }

    @media only screen and (max-width: 1200px) {
      width: 32%;
    }

    @media only screen and (max-width: 960px) {
      width: 48%;
    }

    @media only screen and (max-width: 320px) {
      width: 100%;
    }

    html.with-extra-panel & {
      width: 32%;

      @media only screen and (max-width: 1200px) {
        width: 48%;
      }

      @media only screen and (max-width: 960px) {
        width: 100%;
      }
    }

    .cover {
      @include vertical_center();

      background-repeat: no-repeat;
      background-size: cover;
      background-position: center center;
      width: 100%;
      padding-top: 100%;
      position: relative;

      @mixin control($playBtnWidth, $fontSize, $textIndent) {
        width: $playBtnWidth;
        height: $playBtnWidth;
        line-height: $playBtnWidth;
        font-size: $fontSize;
        text-indent: $textIndent;
        left: calc(50% - #{$playBtnWidth/2});
      }

      .control {
        .as-list & {
          @include control(46px, 27px, 2px);
        }

        @include control(96px, 54px, 5px);
        display: none;
        text-align: center;
        background: #111;
        border-radius: 50%;
        opacity: .7;
        border: 1px solid transparent;
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        transition: .3s;

        &:hover {
          opacity: 1;
          border-color: #fff;
          transform: translateY(-50%) scale(1.1);
        }

        html.touchevents & {
          display: block;
        }
      }

      &:before {
        content: " ";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 0;
        transition: .3s;
      }
    }

    footer {
      padding: 16px;
      background: #333;
      flex: 1;
    }

    .name {
      font-weight: 500;
    }

    .meta {
      color: $color2ndText;
      margin-top: 4px;
      font-size: .92rem;
      display: flex;
      justify-content: space-between;

      .right {
        a {
          margin-left: 4px;

          &:hover {
            color: $colorHighlight;
          }
        }
      }
    }

    a.name, a.artist {
      display: block;
      color: $colorMainText;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;

      &:hover {
        color: $colorHighlight;
      }

      .as-list & {
        display: inline;
      }
    }

    .nope {
      opacity: .5;
    }

    &:hover {
      .cover {
        &:before {
          background-color: rgba(0, 0, 0, .4);
        }
        .control {
          display: block;
        }
      }
    }
  }
}

@mixin artist-album-info-wrapper() {
  .loading {
    @include vertical-center();
    height: 100%;
  }

  .info-wrapper {
    color: $color2ndText;
    position: absolute;
    top: 0;
    left: 0;
    background: $colorMainBgr;
    width: 100%;
    height: 100%;
    z-index: 2;

    .close {
      position: absolute;
      right: 0;
      top: 0;
      background: $colorRed;
      width: 24px;
      height: 24px;
      line-height: 24px;
      text-align: center;
      color: #fff;
      opacity: 0;
      transition: opacity .3s;

      html.touchevents & {
        opacity: 1;
      }
    }

    &:hover .close {
      opacity: 1;
    }

    .inner {
      padding: 24px;
      overflow: auto;
      height: 100%;
      padding-bottom: 48px;

      @media only screen and (max-width: 768px) {
        padding: 16px;
      }
    }
  }
}

@mixin artist-album-info() {
  h1 {
    font-weight: $fontWeight_UltraThin;
    line-height: 2.8rem;

    &.name {
      font-size: 2rem;
    }

    @include vertical-center();
    align-items: initial;

    span {
      flex: 1;
      margin-right: 12px;
    }

    a {
      font-size: 14px;

      &:hover {
        color: $colorHighlight;
      }
    }
  }

  .bio {
    margin-top: 16px;
  }

  .more {
    margin-top: 8px;
    border-radius: .23rem;
    background: $colorBlue;
    color: #fff;
    padding: .3rem .6rem;
    display: inline-block;
    text-transform: uppercase;
    font-size: .8rem;
  }

  img.cover, img.cool-guys-posing {
    width: 100%;
    height: auto;
  }

  .wiki {
    margin-top: 16px;
  }

  .track-listing {
    margin-top: 16px;

    ul {
      overflow: hidden;
    }

    h1 {
      font-size: 1.4rem;
      margin-bottom: 0;
      display: block;
    }

    li {
      display: flex;
      justify-content: space-between;
      padding: 8px;

      &:nth-child(even) {
        background: rgba(255, 255, 255, 0.05);
      }

      .no {
        flex: 0 0 24px;
        opacity: .5;
      }

      .title {
        flex: 1;
      }

      .length {
        flex: 0 0 48px;
        text-align: right;
        opacity: .5;
      }
    }
  }

  footer {
    margin-top: 24px;
    font-size: .9rem;
    text-align: right;
    clear: both;

    a {
      color: #fff;
      font-weight: $fontWeight_Normal;

      &:hover {
        color: #b90000;
      }
    }
  }

  .none {
    margin-top: 16px;
  }

  &.full {
    img.cover, img.cool-guys-posing {
      width: 300px;
      max-width: 100%;
      float: left;
      margin: 0 16px 16px 0;
    }

    h1.name {
      font-size: 2.4rem;

      a.shuffle {
        display: none;
      }
    }
  }
}

@mixin inset-when-pressed() {
  &:active {
    box-shadow: inset 0px 10px 10px -10px rgba(0,0,0,1);
  }
}

@mixin button-group() {
  display: flex;
  position: relative;
  min-width: 192px;
  justify-content: flex-end;

  button {
    $buttonHeight: 28px;

    font-size: .92rem;
    height: $buttonHeight;
    padding: 0 1.23rem;
    line-height: $buttonHeight;
    text-transform: uppercase;
    display: inline-block;

    border-radius: $buttonHeight/2 0px 0px $buttonHeight/2;

    &:last-of-type {
      border-top-right-radius: $buttonHeight/2;
      border-bottom-right-radius: $buttonHeight/2;
    }

    &:not(:first-child) {
      border-top-left-radius: 0;
      border-bottom-left-radius: 0;
      margin-left: 1px;
    }

    i {
      margin-right: 4px;
    }
  }
}

@mixin context-menu() {
  font-weight: $fontWeight_Thin;
  font-size: $fontSize;
  padding: 4px 0;
  min-width: 144px;
  color: #111;
  background-color: rgb(232, 232, 232);
  position: fixed;
  border-radius: 5px;
  display: flex;
  justify-content: center;
  flex-direction: column;
  z-index: 1001;
  align-items: stretch;
  text-align: left;
  box-shadow: inset 0 0px 0 rgba(255,255,255,.6), 0 22px 70px 4px rgba(0,0,0,0.56), 0 0 0 1px rgba(0, 0, 0, 0.3);

  input[type="search"], input[type="text"], input[type="email"], input[type="url"] {
    background: #fff;

    &:focus {
      background: $colorDirtyInputBgr;
    }
  }
}