.panel {
  margin-bottom: calc(@margin-base * 2);
  border: @panel-border-width solid transparent;
  border-radius: @panel-border-radius;

  .box-shadow(0 0 1px rgba(0, 0, 0, 0.2));
}

// Panel contents
.panel-body {
  &:extend(.clearfix all);
}

// Optional heading
.panel-heading {
  position: relative;
  padding: 0;
  width: 100%;
  border-bottom: 1px solid @panel-border-color;
  font-size: 12px;
  font-family: @font-family-headings-css-var;

  .border-top-radius((@panel-border-radius - 1px));
  .btn[btn-checkbox] {
    margin: 0;
  } // reset form controls font size
  .form-control {
    font-weight: normal;
    font-size: inherit;
  }
}

// strip sizing and margins from any .panel-title
.panel-title {
  margin: 0;
  font-weight: inherit;
  font-size: inherit;
  > a,
  > small,
  > .small,
  > small > a,
  > .small > a {
    color: inherit;
  }
}

// Optional footer (stays gray in every modifier class)
.panel-footer {
  padding: @panel-footer-padding;
  border-top: 1px solid @panel-inner-border;
  background-color: @panel-footer-bg;

  .border-bottom-radius((@panel-border-radius - 1px));
}

// List groups in panels
// By default, space out list group content from panel headings to account for
// any kind of custom content between the two.
.panel {
  > .list-group,
  > .panel-collapse > .list-group {
    margin-bottom: 0;
    .list-group-item {
      border-width: 1px 0;
      border-radius: 0;
    } // Add border top radius for first one
    &:first-child {
      .list-group-item:first-child {
        border-top: 0;

        .border-top-radius((@panel-border-radius - 1px));
      }
    } // Add border bottom radius for last one
    &:last-child {
      .list-group-item:last-child {
        border-bottom: 0;

        .border-bottom-radius((@panel-border-radius - 1px));
      }
    }
  }
  > .panel-heading + .panel-collapse > .list-group {
    .list-group-item:first-child {
      .border-top-radius(0);
    }
  }
}

// Collapse space between when there's no additional content.
.panel-heading + .list-group {
  .list-group-item:first-child {
    border-top-width: 0;
  }
}

.list-group + .panel-footer {
  border-top-width: 0;
}

// Tables in panels
// Place a non-bordered `.table` within a panel (not within a `.panel-body`) and
// watch it go full width.
.panel {
  > .table,
  > .table-responsive > .table,
  > .panel-collapse > .table {
    margin-bottom: 0;
    caption {
      padding-right: @panel-body-padding;
      padding-left: @panel-body-padding;
    }
  } // Add border top radius for first one
  > .table:first-child,
  > .table-responsive:first-child > .table:first-child {
    .border-top-radius((@panel-border-radius - 1px));
    > thead:first-child,
    > tbody:first-child {
      > tr:first-child {
        border-top-left-radius: (@panel-border-radius - 1px);
        border-top-right-radius: (@panel-border-radius - 1px);
        td:first-child,
        th:first-child {
          border-top-left-radius: (@panel-border-radius - 1px);
        }
        td:last-child,
        th:last-child {
          border-top-right-radius: (@panel-border-radius - 1px);
        }
      }
    }
  } // Add border bottom radius for last one
  > .table:last-child,
  > .table-responsive:last-child > .table:last-child {
    .border-bottom-radius((@panel-border-radius - 1px));
    > tbody:last-child,
    > tfoot:last-child {
      > tr:last-child {
        border-bottom-right-radius: (@panel-border-radius - 1px);
        border-bottom-left-radius: (@panel-border-radius - 1px);
        td:first-child,
        th:first-child {
          border-bottom-left-radius: (@panel-border-radius - 1px);
        }
        td:last-child,
        th:last-child {
          border-bottom-right-radius: (@panel-border-radius - 1px);
        }
      }
    }
  }
  > .panel-body + .table,
  > .panel-body + .table-responsive,
  > .table + .panel-body,
  > .table-responsive + .panel-body {
    border-top: 1px solid @component-border-color;
  }
  > .table > tbody:first-child > tr:first-child th,
  > .table > tbody:first-child > tr:first-child td {
    border-top: 0;
  }
  > .table-bordered,
  > .table-responsive > .table-bordered {
    border: 0;
    > thead,
    > tbody,
    > tfoot {
      > tr {
        > th:first-child,
        > td:first-child {
          border-left: 0;
        }
        > th:last-child,
        > td:last-child {
          border-right: 0;
        }
      }
    }
    > thead,
    > tbody {
      > tr:first-child {
        > td,
        > th {
          border-bottom: 0;
        }
      }
    }
    > tbody,
    > tfoot {
      > tr:last-child {
        > td,
        > th {
          border-bottom: 0;
        }
      }
    }
  }
  > .table-responsive {
    margin-bottom: 0;
    border: 0;
  }
}

// Collapsable panels (aka, accordion)
// Wrap a series of panels in `.panel-group` to turn them into an accordion with the help of our collapse JavaScript plugin.
.panel-group {
  margin-bottom: @line-height-computed;
  .panel {
    margin-bottom: 0;
    border-radius: @panel-border-radius;
    + .panel {
      margin-top: 5px;
    }
  }
  .panel-heading {
    border-bottom: 0;
    + .panel-collapse > .panel-body,
    + .panel-collapse > .list-group {
      border-top: 1px solid @panel-inner-border;
    }
  }
  .panel-footer {
    border-top: 0;
    + .panel-collapse .panel-body {
      border-bottom: 1px solid @panel-inner-border;
    }
  }
}

// Contextual variations
.panel-default,
.panel-clean {
  .panel-variant(
    @panel-default-border; @panel-default-text; @panel-default-heading-bg; @panel-default-border
  );
  .panel-heading,
  .panel-body,
  .panel-filters {
    padding: 10px 15px;
  }
  .panel-heading > .btn-link {
    margin-top: -10px !important;
  }
}

.panel-clean {
  &.panel {
    margin-right: 0;
    margin-left: 0;
    background-color: transparent;
    box-shadow: none;
  }
  .panel-heading {
    margin-bottom: 24px;
    padding-bottom: 8px;
    [class^='dlt-c8y-icon-'],
    [class*=' dlt-c8y-icon-'] {
      color: @brand-primary;
      font-size: 16px;
    }
  }
}

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

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

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

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

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

.panel.panel-dashboard {
  right: calc(@grid-gutter-width / 2);
  bottom: 0;
  left: calc(@grid-gutter-width / 2);
  overflow: inherit;
  margin-bottom: calc(@grid-gutter-width / 2);
  background-color: @panel-bg;
  + .ui-resizable-handle {
    right: 22px !important;
    bottom: 15px !important;
  }
  > .panel-heading {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 15px;
    height: @panel-heading-height;

    &::after {
      position: absolute;
      top: 50%;
      left: calc(@panel-heading-height / 2);
      margin-top: -5px;
      margin-left: -2px;
      width: 4px;
      height: 10px;
      content: '';
    }
    > span,
    > .panel-title {
      display: inline-block;
      overflow: hidden;
      margin-right: auto;
      padding-top: 4px;
      padding-right: 45px;
      padding-left: 0;
      vertical-align: middle;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .optionsBtn {
      position: absolute;
      top: 0;
      right: 0;
      display: flex;
      align-items: center;
      width: @panel-heading-height;
      height: @panel-heading-height;
      border-left: 1px solid @panel-border-color;
      font-size: 14px;
      .btnIcon {
        width: 100%;
        color: @gray-50;
        text-align: center;
        line-height: 1;
        &:hover {
          color: @brand-primary;
        }
      }
    }
    .btn-link {
      order: 30;
    }

    + .fixed-header {
      position: relative;
      z-index: 2;
      overflow: hidden;
      background-color: @component-background-default;
      table {
        margin-bottom: 0;
      }
    }
    + .panel-body,
    + .fixed-header + .panel-body {
      position: absolute;
      top: @panel-heading-height;
      right: 0;
      bottom: 0;
      left: 0;
      overflow: auto;
      padding: 0;
      > .lead,
      .panel-filters {
        padding: @panel-body-padding;
      }
    }
    + .panel-body,
    + .fixed-header + .panel-body,
    + .fixed-header {
      .table {
        h1,
        h2,
        h3,
        h4 {
          margin: 15px 0 0;
        }
        tr {
          td:first-child,
          th:first-child {
            padding-left: 15px;
          }
          td:last-child,
          th:last-child {
            padding-right: 15px;
          }
        }
        tbody tr:first-child td {
          border-top: 0;
        }
      }
    }
  }
}

.panel.panel-dashboard > .panel-heading + .fixed-header + .panel-body {
  // add margin on top of panel-body when fixed heade table exists for proper scroll bar position
  top: 82px;
  .table {
    // hide scrollable table header
    margin-top: -42px;
  }
}

.panel.panel-icon {
  background-color: @component-background-default;

  .box-shadow(0 1px 1px rgba(0, 0, 0, 0.1));
  > .panel-heading {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-right: 15px;
    height: @panel-heading-height;
    span,
    [ng-show='title'] {
      display: flex;
      align-items: center;
      align-self: stretch;
      order: 1;
      margin-right: auto;
      padding-top: 4px;
      text-transform: uppercase;
      [class^='dlt-c8y-icon-'],
      [class*=' dlt-c8y-icon-'] {
        margin-right: 10px !important;
      }
    }
    &.critical {
      background-color: @status-danger;
      color: @component-background-default;
      .btn-link {
        color: @component-background-default;
      }
    }
    &.major {
      background-color: @status-warning-dark;
      color: @component-background-default;
      .btn-link {
        color: @component-background-default;
      }
    }
    &.minor {
      background-color: @status-warning;
      color: @component-background-default;
      .btn-link {
        color: @component-background-default;
      }
    }
    &.warning {
      background-color: @status-info;
      color: @component-background-default;
      .btn-link {
        color: @component-background-default;
      }
    }
    .pull-right span {
      display: inline;
      .btn-link {
        color: @component-background-default;
      }
    }
    > [class^='dlt-c8y-icon-'],
    > [class*=' dlt-c8y-icon-'],
    span [class^='dlt-c8y-icon-'],
    span [class*=' dlt-c8y-icon-'],
    [ng-show='title'] [class^='dlt-c8y-icon-'],
    [ng-show='title'] [class*=' dlt-c8y-icon-'] {
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: -4px;
      margin-right: auto;
      width: @panel-heading-height;
      height: @panel-heading-height;
    }
    .btn-link {
      color: @navlink-color-default;
      text-transform: none;
      font-size: inherit;
    }
    .btn {
      font-size: inherit;
    }
    .pull-right {
      order: 1000;
    }
  }
  .panel-body.text-muted {
    padding: 0 @panel-body-padding;
    > .text-muted {
      padding: 10px 0;
    }
  }
}