(** Spacing utilities for padding, margin, gap, and space *)

(** Represents spacing configuration *)
type t

(** Direction for spacing *)
type direction = [
  | `All (** All sides *)
  | `X (** Horizontal (left and right) *)
  | `Y (** Vertical (top and bottom) *)
  | `Top (** Top only *)
  | `Right (** Right only *)
  | `Bottom (** Bottom only *)
  | `Left (** Left only *)
  | `Start (** Inline start (logical) *)
  | `End (** Inline end (logical) *)
]

(** Create padding classes *)
val padding : direction -> Size.t -> t

(** Create margin classes *)
val margin : direction -> Size.t -> t

(** Create gap classes for flexbox/grid *)
val gap : [`All | `X | `Y] -> Size.t -> t

(** Create space-between classes *)
val space : [`X | `Y] -> Size.t -> t

(** Convert spacing to CSS class *)
val to_class : t -> Css.t

(** Shorthand constructors *)

(** Padding all sides *)
val p : Size.t -> t

(** Padding horizontal *)
val px : Size.t -> t

(** Padding vertical *)
val py : Size.t -> t

(** Padding top *)
val pt : Size.t -> t

(** Padding right *)
val pr : Size.t -> t

(** Padding bottom *)
val pb : Size.t -> t

(** Padding left *)
val pl : Size.t -> t

(** Margin all sides *)
val m : Size.t -> t

(** Margin horizontal *)
val mx : Size.t -> t

(** Margin vertical *)
val my : Size.t -> t

(** Margin top *)
val mt : Size.t -> t

(** Margin right *)
val mr : Size.t -> t

(** Margin bottom *)
val mb : Size.t -> t

(** Margin left *)
val ml : Size.t -> t