css

type ComputedStyle struct {
	// Font
	FontFamily string
	FontSize   float64 // mm
	FontWeight string  // "normal" | "bold"
	FontStyle  string  // "normal" | "italic"

	// Text
	Color          *RGBColor
	TextAlign      string // "left" | "center" | "right" | "justify"
	TextDecoration string // "none" | "underline" | "line-through"
	LineHeight     float64

	// Box model (mm)
	PaddingTop    float64
	PaddingRight  float64
	PaddingBottom float64
	PaddingLeft   float64

	MarginTop    float64
	MarginRight  float64
	MarginBottom float64
	MarginLeft   float64

	// Border (mm / style / color)
	BorderTopWidth    float64
	BorderRightWidth  float64
	BorderBottomWidth float64
	BorderLeftWidth   float64

	BorderTopStyle    string
	BorderRightStyle  string
	BorderBottomStyle string
	BorderLeftStyle   string

	BorderTopColor    *RGBColor
	BorderRightColor  *RGBColor
	BorderBottomColor *RGBColor
	BorderLeftColor   *RGBColor

	// Background
	BackgroundColor    *RGBColor
	BackgroundGradient *Gradient // set when background-image is a gradient
	BackgroundImageURL string    // set when background-image is url(...)
	BackgroundSize     string
	BackgroundPosition string
	BackgroundRepeat   string
	BoxShadow          []Shadow // parsed box-shadow value (up to 4)
	TextShadow         *Shadow  // text-shadow compatibility field; points at first TextShadows entry
	TextShadows        []Shadow // parsed text-shadow value (up to 4)

	// Outline (mm / style / color / offset) — drawn outside the cell box.
	OutlineWidth  float64
	OutlineStyle  string // "solid" | "dashed" | "dotted"
	OutlineColor  *RGBColor
	OutlineOffset float64 // mm; positive pushes outline further out

	// Border radius (mm). BorderRadius is the uniform fallback; per-corner overrides it.
	BorderRadius            float64
	BorderRadiusTopLeft     float64
	BorderRadiusTopRight    float64
	BorderRadiusBottomLeft  float64
	BorderRadiusBottomRight float64

	// Layout
	Display        string // "block" | "inline" | "inline-block" | "none" | "flex" | "table" | ...
	Visibility     string // "visible" | "hidden" | "collapse"
	Width          float64
	Height         float64
	MinWidth       float64
	MaxWidth       float64
	MinHeight      float64
	MaxHeight      float64
	ObjectFit      string
	ObjectPosition string

	// Flex container properties
	FlexDirection  string // "row" | "column" | "row-reverse" | "column-reverse"
	FlexWrap       string // "nowrap" | "wrap" | "wrap-reverse"
	JustifyContent string // "flex-start" | "center" | "flex-end" | "space-between" | "space-around"
	AlignItems     string // "flex-start" | "center" | "flex-end" | "stretch"

	// Flex item properties (cross-axis)
	AlignSelf string  // "auto" | "flex-start" | "flex-end" | "center" | "stretch"
	RowGap    float64 // mm
	ColumnGap float64 // mm

	// Flex item properties
	FlexGrow      float64 // default 0; used as proportional weight in layout
	FlexShrink    float64 // parsed/stored; no independent layout effect (quantizer prevents overflow)
	FlexBasis     float64 // mm; 0 means auto unless FlexBasisAuto or FlexBasisPct set
	FlexBasisAuto bool    // true when flex-basis:auto was explicitly set
	FlexBasisPct  float64 // >0 when flex-basis was a percentage (0–100 scale)
	Order         int     // CSS order property; lower = earlier; 0 is default

	// List marker style (for ul/ol). Supports standard CSS values plus the
	// "decimal-circle" extension that renders numbers inside filled discs.
	ListStyleType string

	// Opacity multiplies into all descendant color alpha values (0 = invisible, 1 = opaque).
	Opacity float64

	// Typography
	LetterSpacing    float64 // mm; applied via SetCharSpacing
	TextTransform    string  // "none" | "uppercase" | "lowercase" | "capitalize"
	TextIndent       float64 // mm; first-line indent
	WhiteSpace       string  // "normal" | "nowrap" | "pre" | "pre-wrap" | "pre-line"
	VerticalAlign    string  // "baseline" | "sub" | "super" | "sup"
	Content          string  // generated content for ::before/::after
	CounterReset     string  // raw counter-reset value, evaluated by the translator
	CounterIncrement string  // raw counter-increment value, evaluated by the translator
	Quotes           string  // raw quotes value, evaluated by generated content

	// Page break hints.
	PageBreakBefore string // "always" | "avoid" | "auto"
	PageBreakAfter  string // "always" | "avoid" | "auto"
	BreakInside     string // "avoid" | "auto"

	// CSS custom properties (--name: value). Stored as a flat map per element;
	// cascade inheritance is handled by callers (computeNodeStyle) which copy
	// from the parent's Vars map before applying child rules.
	Vars map[string]string
	// contains filtered or unexported fields
}

type ConicGradient struct {
	FromDeg float64
	CX, CY  float64 // centre as fraction of width/height (0.5 = center)
	Stops   []GradientStop
}

type Gradient struct {
	Kind   GradientKind
	Linear *LinearGradient
	Radial *RadialGradient
	Conic  *ConicGradient
}

type GradientKind int

type GradientStop struct {
	Color    RGBColor
	Position float64 // 0.0–1.0; -1 means "auto" (evenly distributed)
}

type LinearGradient struct {
	AngleDeg float64
	Stops    []GradientStop
}

type RGBColor struct {
	R, G, B int
	A       float64 // 0 = transparent, 1 = opaque; default is 1.0
}

type RadialGradient struct {
	Circle bool
	CX, CY float64 // centre as fraction of width/height (0.5 = center)
	Stops  []GradientStop
}

type Shadow struct {
	OffsetX    float64   // mm
	OffsetY    float64   // mm
	BlurRadius float64   // mm; 0 when omitted
	Spread     float64   // mm; 0 when omitted (box-shadow only)
	Color      *RGBColor // nil when no color specified
	Inset      bool      // true when "inset" keyword is present
}