// The template: everything that is the same in every report.
#let report(title: "Report", subtitle: none, body) = {
  set document(title: title)
  set text(size: 10pt, lang: "en")
  set page(
    paper: "a4",
    margin: (x: 20mm, top: 30mm, bottom: 22mm),
    // Page header: repeated at the top of every page
    header: [
      #grid(
        columns: (1fr, auto),
        text(weight: "bold")[NoteBox], title,
      )
      #line(length: 100%, stroke: 0.5pt)
    ],
    // Page footer: repeated at the bottom of every page
    footer: context grid(
      columns: (1fr, auto),
      [Generated on #datetime.today().display("[day]/[month]/[year]")],
      counter(page).display("1 / 1", both: true),
    ),
  )

  // Report header: once, on the first page
  text(size: 22pt, weight: "bold", title)
  if subtitle != none {
    linebreak()
    text(fill: luma(90), subtitle)
  }
  v(6pt)

  body
}