#wrapper
  span.label Root
  .branch.lv1
    .entry
      span.label Entry-1
      .branch.lv2
        .entry
          span.label Entry-1-1
          .branch.lv3
            .entry.sole
              span.label Entry-1-1-1
        .entry
          span.label Entry-1-2
          .branch.lv3
            .entry.sole
              span.label Entry-1-2-1
        .entry
          span.label Entry-1-3
          .branch.lv3
            .entry.sole
              span.label Entry-1-3-1
    .entry
      span.label Entry-2
    .entry
      span.label Entry-3
      .branch.lv2
        .entry
          span.label Entry-3-1
        .entry
          span.label Entry-3-2
        .entry
          span.label Entry-3-3
          .branch.lv3
            .entry
              span.label Entry-3-3-1
            .entry
              span.label Entry-3-3-2
              .branch.lv4
                .entry
                  span.label Entry-3-3-2-1
                .entry
                  span.label Entry-3-3-2-2
            .entry
              span.label Entry-3-3-3
        .entry
          span.label Entry-3-4
    .entry
      span.label Entry-4
    .entry
      span.label Entry-5

//------- {{ Variables }} -------//

$white: #eee9dc;
$bg: #2e6ba7;

$horizontal-gutter: 100px;
$border-radius: 10px;

$entry-min-height: 60px;

$label-width: 150px;
$label-height: 30px;
$label-border-radius: 5px;


//------- {{ Styles }} -------//

*, *:before, *:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  min-width: 1200px;
  margin: 0;
  padding: 50px;
  color: $white;
  font: 16px Verdana, sans-serif;
  background: $bg;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

#wrapper {
  position: relative;
}

.branch {
  position: relative;
  margin-left: $horizontal-gutter + $label-width;
  &:before {
    content: "";
    width: $horizontal-gutter / 2;
    border-top: 2px solid $white;
    position: absolute;
    left: -$horizontal-gutter;
    top: 50%;
    margin-top: 1px;
  }
}

.entry {
  position: relative;
  min-height: $entry-min-height;
  &:before {
    content: "";
    height: 100%;
    border-left: 2px solid $white;
    position: absolute;
    left: -($horizontal-gutter / 2);
  }
  &:after {
    content: "";
    width: $horizontal-gutter / 2;
    border-top: 2px solid $white;
    position: absolute;
    left: -($horizontal-gutter / 2);
    top: 50%;
    margin-top: 1px;
  }
  &:first-child {
    &:before {
      width: $border-radius;
      height: 50%;
      top: 50%;
      margin-top: 2px;
      border-radius: $border-radius 0 0 0;
    }
    &:after {
      height: $border-radius;
      border-radius: $border-radius 0 0 0;
    }
  }
  &:last-child {
    &:before {
      width: $border-radius;
      height: 50%;
      border-radius: 0 0 0 $border-radius;
    }
    &:after {
      height: $border-radius;
      border-top: none;
      border-bottom: 2px solid $white;
      border-radius: 0 0 0 $border-radius;
      margin-top: -$border-radius + 1px;
    }
  }
  &.sole {
    &:before {
      display: none;
    }
    &:after {
      width: $horizontal-gutter / 2;
      height: 0;
      margin-top: 1px;
      border-radius: 0;
    }
  }
}

.label {
  display: block;
  min-width: $label-width;
  padding: 5px 10px;
  line-height: $label-height - 5px * 2;
  text-align: center;
  border: 2px solid $white;
  border-radius: $label-border-radius;
  position: absolute;
  left: 0;
  top: 50%;
  margin-top: -($label-height / 2);
}

// works with unlimited items