// ===================================================
// Pos
// ===================================================

/// Set the Position for the Position Mixins.
/// For Zero Position (0) set the value to 'z'
/// - One value = top
/// - Two values = top left
/// - Four values = top right bottom left
///
/// @group core - pos
///
/// @param  {list}   $position - Position Values.
@mixin pos($position) {

  // Setup internal vars
  $targets: null !default;
  $count: length($position);

  // Check if enough values available
  @if $count > 4 or $count <= 0 or $count == 3 {
    @warn 'Please check the position values.';

  } @else {
    // Build the Position Matrix
    @if $count == 1 { $targets: top; }

    @if $count == 2 { $targets: top left; }

    @if $count == 4 { $targets: top right bottom left; }

    // Include the Attributes
    @for $i from 1 through $count {
      @if nth($position,$i) == z {

        // With 'z' set position to 0
        #{nth($targets,($i))}: 0;

      } @else {
        // Otherwise set the Position based on the Value
        @if nth($position, $i) > 0 or nth($position,$i) < 0 {
          #{nth($targets, ($i))}: if(unitless(nth($position,$i)), nth($position,$i) + 0px, nth($position,$i));
        }
      }
    }
  }
}