// Shared handwritten-note patterns for margin, footer, and full-page layouts.
#let note-fill(
  style,
  rule-spacing: 7mm,
  rule-thickness: 0.35pt,
  dot-spacing: 5mm,
  dot-radius: 0.35pt,
  grid-spacing: 5mm,
  grid-thickness: 0.25pt,
  rule-color: luma(190),
  dot-color: luma(160),
  grid-color: luma(205),
) = if style == "ruled" {
  tiling(size: (5mm, rule-spacing), relative: "parent")[
    #place(bottom, line(length: 5mm, stroke: rule-thickness + rule-color))
  ]
} else if style == "dotted" {
  tiling(size: (dot-spacing, dot-spacing), relative: "parent")[
    #place(center, circle(radius: dot-radius, fill: dot-color))
  ]
} else if style == "grid" {
  tiling(size: (grid-spacing, grid-spacing), relative: "parent")[
    #line(start: (0%, 0%), end: (100%, 0%), stroke: grid-thickness + grid-color)
    #line(start: (0%, 0%), end: (0%, 100%), stroke: grid-thickness + grid-color)
  ]
} else {
  none
}

#let note-area(
  style,
  width: 100%,
  height: 100%,
  rule-spacing: 7mm,
  rule-thickness: 0.35pt,
  dot-spacing: 5mm,
  dot-radius: 0.35pt,
  grid-spacing: 5mm,
  grid-thickness: 0.25pt,
  rule-color: luma(190),
  dot-color: luma(160),
  grid-color: luma(205),
) = rect(
  width: width,
  height: height,
  fill: note-fill(
    style,
    rule-spacing: rule-spacing,
    rule-thickness: rule-thickness,
    dot-spacing: dot-spacing,
    dot-radius: dot-radius,
    grid-spacing: grid-spacing,
    grid-thickness: grid-thickness,
    rule-color: rule-color,
    dot-color: dot-color,
    grid-color: grid-color,
  ),
  stroke: none,
)