(** Layout utilities combining display, position, and box model *)

(** Layout configuration *)
type t

(** Overflow values *)
type overflow = [
  | `Auto
  | `Hidden
  | `Clip
  | `Visible
  | `Scroll
]

(** Box sizing *)
type box_sizing = [
  | `Border_box
  | `Content_box
]

(** Object fit *)
type object_fit = [
  | `Contain
  | `Cover
  | `Fill
  | `None
  | `Scale_down
]

(** Object position *)
type object_position = [
  | `Bottom | `Center | `Left | `Left_bottom | `Left_top
  | `Right | `Right_bottom | `Right_top | `Top
]

(** Set width *)
val width : Size.t -> t

(** Set height *)
val height : Size.t -> t

(** Set min width *)
val min_width : Size.t -> t

(** Set max width *)
val max_width : Size.t -> t

(** Set min height *)
val min_height : Size.t -> t

(** Set max height *)
val max_height : Size.t -> t

(** Set overflow *)
val overflow : [`All | `X | `Y] -> overflow -> t

(** Set box sizing *)
val box_sizing : box_sizing -> t

(** Set object fit *)
val object_fit : object_fit -> t

(** Set object position *)
val object_position : object_position -> t

(** Set aspect ratio *)
val aspect : [`Auto | `Square | `Video | `Ratio of int * int] -> t

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

(** Accessibility utilities *)

(** Screen reader only (visually hidden but accessible) *)
val sr_only : Css.t

(** Focus ring utility *)
val focus_ring : ?color:Color.t -> ?width:Effects.border_width -> unit -> Css.t

(** Common width utilities *)
val w_full : Css.t
val w_screen : Css.t
val w_auto : Css.t
val w_fit : Css.t

(** Common height utilities *)
val h_full : Css.t
val h_screen : Css.t
val h_auto : Css.t
val h_fit : Css.t