///
/// Mixin for setting perspective on elements, useful for 3D transforms.
/// 
/// @mixin perspective
/// @param {Number} $value [$default-perspective] - The perspective value for 3D transformations.
/// @example scss - Usage
///   .icon-perspective { @include perspective(1000px); } // Applies a perspective of 1000px
///
@mixin perspective($value: $default-perspective) {
    perspective: $value;
}