/**
 * @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
 */

// We are going to create a 980px wide, 5 column grid with 20px gutters between
// columns (applied as 10px of left/right padding on each column).
$zen-column-count:  5;
$zen-gutter-width:  20px;
$zen-grid-width:    980px;

// If you need IE6/7 support for box-sizing: border-box (default), see _base.scss
// Since the same CSS unit for grid width and gutter width are set here
// we can use box-sizing: content-box; without worrying about polyfills.
$zen-box-sizing: content-box;

// You can generate more efficient CSS if you manually apply the
// zen-grid-item-base mixin to all grid items from within a single ruleset.
$zen-auto-include-item-base: false;
// $zen-auto-include-flow-item-base: false;

// Suppress this section of CSS for RTL layouts since it contains no LTR-specific styles.
@if $zen-reverse-all-floats == false {

/**
 * 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: $zen-grid-width;
}

/* Apply the shared properties of grid items in a single, efficient ruleset. */
#header,
#content,
#navigation,
.region-sidebar-first,
.region-sidebar-second,
#footer {
  // See the note about $zen-auto-include-item-base above.
  @include zen-grid-item-base();
}

/* Containers for grid items and flow items. */
#header,
#main,
#footer {
  @include zen-grid-container();
}

/* Navigation bar */
#main {
  /* Move all the children of #main down to make room. */
  padding-top: $nav-height;
  position: relative;
}
#navigation {
  /* Move the navbar up inside #main's padding. */
  position: absolute;
  top: 0;
  height: $nav-height;
  width: $zen-grid-width - $zen-gutter-width;
}

} // End of @if $zen-reverse-all-floats == true

/**
 * The layout when there is only one sidebar, the left one.
 */
.sidebar-first {
  /* Span 4 columns, starting in 2nd column from left. */
  #content {
    @include zen-grid-item(4, 2);
  }

  /* Span 1 column, starting in 1st column from left. */
  .region-sidebar-first {
    @include zen-grid-item(1, 1);
  }
}

/**
 * The layout when there is only one sidebar, the right one.
 */
.sidebar-second {
  /* Span 4 columns, starting in 1st column from left. */
  #content {
    @include zen-grid-item(4, 1);
  }

  /* Span 1 column, starting in 5th column from left. */
  .region-sidebar-second {
    @include zen-grid-item(1, 5);
  }
}

/**
 * The layout when there are two sidebars.
 */
.two-sidebars {
  /* Span 3 columns, starting in 2nd column from left. */
  #content {
    @include zen-grid-item(3, 2);
  }

  /* Span 1 column, starting in 1st column from left. */
  .region-sidebar-first {
    @include zen-grid-item(1, 1);
  }

  /* Span 1 column, starting in 5th column from left. */
  .region-sidebar-second {
    @include zen-grid-item(1, 5);
  }
}
