// Grid system
//
// Generate semantic grid columns with these mixins.

// Centered container element
.container-fixed(@gutter: @grid-gutter-width) {
  margin-right: auto;
  margin-left: auto;
  padding-left:  floor((@gutter / 2));
  padding-right: ceil((@gutter / 2));
  &:extend(.clearfix all);
}

// Creates a wrapper for a series of columns
.make-row(@gutter: @grid-gutter-width) {
  margin-left:  ceil((@gutter / -2));
  margin-right: floor((@gutter / -2));
  &:extend(.clearfix all);
}

// Generate the extra small columns
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  float: left;
  width: percentage((@columns / @grid-columns));
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);
}
.make-xs-column-offset(@columns) {
  margin-left: percentage((@columns / @grid-columns));
}
.make-xs-column-push(@columns) {
  left: percentage((@columns / @grid-columns));
}
.make-xs-column-pull(@columns) {
  right: percentage((@columns / @grid-columns));
}

// Generate the small columns
.make-sm-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-sm-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-sm-column-offset(@columns) {
  @media (min-width: @screen-sm-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-sm-column-push(@columns) {
  @media (min-width: @screen-sm-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-sm-column-pull(@columns) {
  @media (min-width: @screen-sm-min) {
    right: percentage((@columns / @grid-columns));
  }
}

// Generate the medium columns
.make-md-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-md-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-md-column-offset(@columns) {
  @media (min-width: @screen-md-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-md-column-push(@columns) {
  @media (min-width: @screen-md-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-md-column-pull(@columns) {
  @media (min-width: @screen-md-min) {
    right: percentage((@columns / @grid-columns));
  }
}

// Generate the large columns
.make-lg-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-lg-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-lg-column-offset(@columns) {
  @media (min-width: @screen-lg-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-lg-column-push(@columns) {
  @media (min-width: @screen-lg-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-lg-column-pull(@columns) {
  @media (min-width: @screen-lg-min) {
    right: percentage((@columns / @grid-columns));
  }
}

//
// Grid system
// --------------------------------------------------


// Container widths
//
// Set the container width, and override it for fixed navbars in media queries.

.container {
  .container-fixed();

  @media (min-width: @screen-sm-min) {
    width: @container-sm;
  }
  @media (min-width: @screen-md-min) {
    width: @container-md;
  }
  @media (min-width: @screen-lg-min) {
    width: @container-lg;
  }
}


// Fluid container
//
// Utilizes the mixin meant for fixed width containers, but without any defined
// width for fluid, full width layouts.

.container-fluid {
  .container-fixed();
}


// Row
//
// Rows contain and clear the floats of your columns.

.row {
  .make-row();
}


// Columns
//
// Common styles for small and large grid columns

.make-grid-columns();


// Extra small grid
//
// Columns, offsets, pushes, and pulls for extra small devices like
// smartphones.

.make-grid(xs);


// Small grid
//
// Columns, offsets, pushes, and pulls for the small device range, from phones
// to tablets.

@media (min-width: @screen-sm-min) {
  .make-grid(sm);
}


// Medium grid
//
// Columns, offsets, pushes, and pulls for the desktop device range.

@media (min-width: @screen-md-min) {
  .make-grid(md);
}


// Large grid
//
// Columns, offsets, pushes, and pulls for the large desktop device range.

@media (min-width: @screen-lg-min) {
  .make-grid(lg);
}