// Panels

.panel-variant(@border; @heading-text-color; @heading-bg-color; @heading-border) {

  &.panel-border {
      border-color: @border;
  }

  & > .panel-heading {
    color: @heading-text-color;
    background-color: @heading-bg-color;
    border-color: darken(@heading-border, 8.5%);

    + .panel-collapse > .panel-body {
      border-top-color: @border;
    }
    .badge {
      color: @heading-bg-color;
      background-color: @heading-text-color;
    }

    & > .panel-title {
      color: @heading-text-color;
    }
  }
  & > .panel-footer {
    + .panel-collapse > .panel-body {
      border-bottom-color: @border;
    }
  }

  & > .panel-body {
    &.fill {
       color: #FFF;
       border-color: lighten(@heading-bg-color, 13%);
       background-color: lighten(@heading-bg-color, 13%);
    }
    &.border {
       border: 3px solid @border;
    }
  }

}