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✏️ Editing: vc_mixins.less

// For clearing floats like a boss h5bp.com/q
.vc_clearfix {
  &:before,
  &:after {
    display: table;
    content: "";
  }
  &:after {
    clear: both;
  }
}

// Mixins 4.0
//Button variants mixin
.vc_btn_variants(@color, @txt_color) {
  background-color: @color;
  color: @txt_color !important; // TODO: WTF? why it is not rendering?
  .transition(all 0.5s);
  &:hover {
    background-color: darken(@color, 6%);
    color: darken(@txt_color, 3%) !important;
  }
  &.vc_btn_outlined,
  &.vc_btn_square_outlined {
    color: @color !important;
    &:hover {
      border-color: darken(@color, 6%);
    }
  }
  &.vc_btn_3d {
    .box-shadow(0 5px 0 darken(@color, 11%));
    margin-bottom: 5px;
    &.vc_btn_xs {
      .box-shadow(0 3px 0 darken(@color, 11%));
      margin-bottom: 3px;
    }
    &.vc_btn_sm {
      .box-shadow(0 4px 0 darken(@color, 11%));
      margin-bottom: 4px;
    }
  }
}

.vc_heading(@font_size) {
  font-weight: normal;
  font-size: @font_size;
  color: inherit;
}

.vc_box-heading {
  .border-top-radius(1px);
  background: @vc_modal_header_bg_color;
  color: @vc_modal_header_color;
  padding: 10px 15px;
  .vc_icon {
    width: 15px;
    height: 18px;
    display: block;
  }
  // TODO: refactor with SMCSS
  .vc_close {
    margin-top: 2px;
    float: right;
    display: block;
    &:focus {
      -webkit-box-shadow: none;
      -moz-box-shadow: none;
      box-shadow: none;
    }
    .vc_icon {
      background: transparent url(../vc/fe/close_panel.png) center center;
    }
  }
  .vc_minimize {
    margin-top: 2px;
    margin-right: 2px;
    float: right;
    display: block;
    .vc_icon {
      background: transparent url(../vc/fe/modal_minimize.png) center center;
    }
  }
  .vc_transparent {
    margin-top: 2px;
    margin-right: 8px;
    float: right;
    display: block;
    .vc_icon {
      background: transparent url(../vc/fe/eye_ico.png) center center no-repeat;
    }
  }
}

.vc_edit_color_option_variants(@selector, @color, @txt_color) {
  .@{selector} {
    background-color: @color !important;
    color: @txt_color !important;
  }
}

.greyGradient() {
  background: #f1f1f1;
  background-image: -webkit-gradient(linear, left bottom, left top, from(#ececec), to(#f9f9f9));
  background-image: -webkit-linear-gradient(bottom, #ececec, #f9f9f9);
  background-image: -moz-linear-gradient(bottom, #ececec, #f9f9f9);
  background-image: -o-linear-gradient(bottom, #ececec, #f9f9f9);
  background-image: linear-gradient(to top, #ececec, #f9f9f9);

border: 1px solid #dfdfdf !important;
  -webkit-box-shadow: inset 0 1px 0 #fff;
  box-shadow: inset 0 1px 0 #fff;
}

// CSS3 PROPERTIES
// --------------------------------------------------

// Border Radius
.border-radius(@radius) {
  -webkit-border-radius: @radius;
  -moz-border-radius: @radius;
  border-radius: @radius;
}

// COMPONENT MIXINS
// --------------------------------------------------

// Button backgrounds
// ------------------
.buttonBackground(@startColor, @endColor) {
  background-color: @startColor;

// in these cases the gradient won't cover the background, so we override
  &:hover, &:active, &.active, &.disabled, &[disabled] {
    background-color: @endColor;
  }
}

.no_bullet_fix() {
  background-image: none;
  list-style: none !important;
  &:after,
  &:before {
    display: none !important;
  }
}

//Transition
.wpb_transition(@param: all, @time: 0.2s, @easing: linear) {
  transition: @param @time @easing;
  -moz-transition: @param @time @easing;
  -webkit-transition: @param @time @easing;
  -o-transition: @param @time @easing;
}

.wpb_transform(@param) {
  -webkit-transform: @param;
  -moz-transform: @param;
  -ms-transform: @param;
  -o-transform: @param;
  transform: @param;
}

.wpb_border_radius(@radius: 5px) {
  -webkit-border-radius: @radius;
  -moz-border-radius: @radius;
  border-radius: @radius;
}

// Mixins 4.0
//Button variants mixin
.vc_btn_variants(@selector, @color, @txt_color) {
  &@{selector} {
    .vc_btn_variants(@color, @txt_color);
  }
}

.vc_frontend-editor-invisibility-settings {
  display: block !important;
  .opacity(.5);
  .vc_controls, &.vc_section + .vc_controls, &.vc_section + .vc_row-full-width + .vc_controls {
    .vc_btn-content {
      background-color: #CCC !important;
      border-color: #CCC !important;
      &:hover {
        background-color: #b3b3b3 !important;
        border-color: #b3b3b3 !important;
      }
    }
    .vc_control-btn-append:before {
      border-bottom-color: #CCC !important;
    }
    .vc_control-btn-append:hover:before {
      border-bottom-color: #b3b3b3 !important;
    }
  }
  &.vc_section + .vc_controls, &.vc_section + .vc_row-full-width + .vc_controls {
    .vc_btn-content {
      .opacity(.5);
    }
  }
}

.vc_backend-editor-invisibility-settings {
  display: block !important;
  .vc_controls {
    .vc_btn-content {
      background-color: #CCC !important;
      border-color: #CCC !important;
      &:hover {
        background-color: #b3b3b3 !important;
        border-color: #b3b3b3 !important;
      }
    }
  }
  > * {
    .opacity(.5) !important;
  }
}

.vc-empty {
  outline: 1px dotted @vc_border_color;
  min-height: 50px;
  position: relative;
  cursor: pointer;
  .box-sizing(border-box);

&:after {
    font-family: 'vcpb-plugin-icons' !important;
    speak: none;
    font-style: normal;
    font-weight: bold;
    font-variant: normal;
    text-transform: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    content: @vc-c-icon-add_element;
    color: #848C92;
    font-size: 20px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    z-index: 0;
    height: 30px;
    width: 30px;
    line-height: 30px;
    text-align: center;
    position: absolute;
  }
}

.vc_bg_color_variants(@color) {
  .vc_bg-@{color} {
    background-color: @@color;
  }
}

// End Mixins

MR SKB