/**
 * @file
 * Positioning for a fixed-width, desktop-centric layout.
 *
 * Define CSS classes to create a table-free, 3-column, 2-column, or single
 * column layout depending on whether blocks are enabled in the left or right
 * columns.
 *
 * This layout uses the Zen Grids plugin for Compass: http://zengrids.com
 */

/**
 * Center the page.
 *
 * If you want to make the page a fixed width and centered in the viewport,
 * this is the standards-compliant way to do that.
 */
#page,
.region-bottom {
  margin-left: auto;
  margin-right: auto;
  width: 980px;
}

/* Apply the shared properties of grid items in a single, efficient ruleset. */
#header,
#content,
#navigation,
.region-sidebar-first,
.region-sidebar-second,
#footer {
  padding-left: 10px;
  padding-right: 10px;
  border-left: 0 !important;
  border-right: 0 !important;
  word-wrap: break-word;
  *behavior: url("/path/to/boxsizing.htc");
  _display: inline;
  _overflow: hidden;
  _overflow-y: visible;
}

/* Containers for grid items and flow items. */
#header,
#main,
#footer {
  *position: relative;
  *zoom: 1;
}
#header:before,
#header:after,
#main:before,
#main:after,
#footer:before,
#footer:after {
  content: "";
  display: table;
}
#header:after,
#main:after,
#footer:after {
  clear: both;
}

/* Navigation bar */
#main {
  /* Move all the children of #main down to make room. */
  padding-top: 3em;
  position: relative;
}
#navigation {
  /* Move the navbar up inside #main's padding. */
  position: absolute;
  top: 0;
  height: 3em;
  width: 960px;
}

/**
 * The layout when there is only one sidebar, the left one.
 */

/* Span 4 columns, starting in 2nd column from left. */
.sidebar-first #content {
  float: left;
  width: 764px;
  margin-left: 196px;
  margin-right: -980px;
}

/* Span 1 column, starting in 1st column from left. */
.sidebar-first .region-sidebar-first {
  float: left;
  width: 176px;
  margin-left: 0px;
  margin-right: -196px;
}

/**
 * The layout when there is only one sidebar, the right one.
 */

/* Span 4 columns, starting in 1st column from left. */
.sidebar-second #content {
  float: left;
  width: 764px;
  margin-left: 0px;
  margin-right: -784px;
}

/* Span 1 column, starting in 5th column from left. */
.sidebar-second .region-sidebar-second {
  float: left;
  width: 176px;
  margin-left: 784px;
  margin-right: -980px;
}

/**
 * The layout when there are two sidebars.
 */

/* Span 3 columns, starting in 2nd column from left. */
.two-sidebars #content {
  float: left;
  width: 568px;
  margin-left: 196px;
  margin-right: -784px;
}

/* Span 1 column, starting in 1st column from left. */
.two-sidebars .region-sidebar-first {
  float: left;
  width: 176px;
  margin-left: 0px;
  margin-right: -196px;
}

/* Span 1 column, starting in 5th column from left. */
.two-sidebars .region-sidebar-second {
  float: left;
  width: 176px;
  margin-left: 784px;
  margin-right: -980px;
}
