Tabbed widget (CSS)

css-tabbed-widget.css

@import '../../shared/mixins',
        '../../shared/reset',
        '../../shared/about-dark';

/*
 * Copyright (c) 2013 Thibaut Courouble
 * http://www.cssflow.com
 *
 * Licensed under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 */

/* Note: this implementation is very hacky.
   You may not want to use it in production. ;) */

body {
  font: 12px/20px 'Lucida Grande', Verdana, sans-serif;
  color: #404040;
  background: #eee;
}

.widget {
  position: relative;
  margin: 50px auto;
  width: 320px;
  background: white;
  border: 1px solid #ccc;
  border-radius: 4px;
  @include box-shadow(0 0 8px rgba(black, .07));
}

.widget-tabs {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 9px 12px 0;
  text-align: left;
  /* Make the last tab in the DOM the left-most tab on the screen.
     That way we can activate it by default and still be able to
     deactivate it later using the ~ selector. */
  direction: rtl;
  background: #f5f5f5;
  border-bottom: 1px solid #ddd;
  border-radius: 3px 3px 0 0;
}

.widget-tab,
%inactive-widget-tab {
  position: relative;
  display: inline-block;
  vertical-align: top;
  margin-top: 3px;
  line-height: 36px;
  font-weight: normal;
  color: #999;
  background: #fcfcfc;
  border: solid #ddd;
  border-width: 1px 1px 0;
  border-radius: 5px 5px 0 0;

  /* Reset %active-widget-tab */
  padding-bottom: 0;
  bottom: auto;

  > .widget-tab-link {
    margin: 0;
    border-top: 0;
  }
}

.widget-tab + .widget-tab { margin-right: -1px; }

.widget-tab:last-child, // The left-most tab
%active-widget-tab {
  bottom: -1px;
  margin-top: 0;
  padding-bottom: 2px;
  line-height: 34px;
  font-weight: bold;
  color: #555;
  background: white;
  border-top: 0;

  > .widget-tab-link {
    margin: 0 -1px;
    border-top: 4px solid #4cc8f1;
  }
}

/* Deactivate the default tab when a preceding tab is activated. */
%active-widget-tab ~ .widget-tab { @extend %inactive-widget-tab; }

.widget-tab-link {
  display: block;
  min-width: 60px;
  padding: 0 15px;
  color: inherit;
  text-align: center;
  text-decoration: none;
  border-radius: 4px 4px 0 0;
}

.widget-list {
  display: none;
  padding-top: 50px;

  > li + li { border-top: 1px solid #e8e8e8; }

  /* The last list is activated (visible) by default. */
  &:last-of-type { display: block; }

  &:target {
    display: block;

    /* Hide the default list when another is activated. */
    ~ .widget-list { display: none; }

    /* First list activates the first tab, second list activates the second tab, etc. */
    &:first-of-type  ~ .widget-tabs > .widget-tab:first-child  { @extend %active-widget-tab; }
    &:nth-of-type(2) ~ .widget-tabs > .widget-tab:nth-child(2) { @extend %active-widget-tab; }
    &:last-of-type   ~ .widget-tabs > .widget-tab:last-child   { @extend %active-widget-tab; }
  }
}

.widget-list-link {
  display: block;
  line-height: 18px;
  padding: 10px 12px;
  font-weight: bold;
  color: #555;
  text-decoration: none;
  cursor: pointer;

  &:hover { background: #f7f7f7; }
  li:last-child > & { border-radius: 0 0 3px 3px; }

  > img {
    float: left;
    width: 32px;
    height: 32px;
    margin: 2px 12px 0 0;
  }

  > span {
    display: block;
    font-size: 11px;
    font-weight: normal;
    color: #999;
  }
}