#let navy = rgb("#1a3a5f")
#let muted = rgb("#626b73")
#let pass = rgb("#1f6b45")
#let fail = rgb("#9b2c2c")

#let calcsheet(
  title: "Structural Calculation",
  project: "",
  prepared-by: "",
  body,
) = {
  set document(title: title, author: prepared-by)
  set page(
    paper: "us-letter",
    margin: (x: 1in, top: 1.25in, bottom: 1in),
    header: context {
      grid(
        columns: (1fr, 1fr),
        align: (left, right),
        image("../assets/logo.png", height: 30pt),
        [#text(size: 9pt)[Project:] \
          #text(size: 10pt, weight: "bold")[#project]],
      )
    },
    footer: context {
      set text(size: 8.5pt, fill: muted)
      stack(
        spacing: 4pt,
        line(length: 100%, stroke: 0.5pt + muted),
        [#prepared-by],
      )
    },
  )
  set text(font: "Libertinus Serif", size: 10pt, lang: "en")
  set par(justify: true)
  set heading(numbering: none)
  show heading.where(level: 1): set text(size: 14pt, weight: "bold", fill: black)
  show heading.where(level: 2): set text(size: 11pt, weight: "bold", fill: black)
  show heading.where(level: 2): set block(above: 2em, below: 1em)
  body
}

#let calcline(formula, note) = grid(
  columns: (1.7fr, 1fr),
  gutter: 4pt,
  align: (left, left),
  formula, text(size: 9pt, fill: muted, note),
)

#let check(label, demand, capacity, unit: "", ok: auto, demand-label: "Demand", capacity-label: "Capacity") = {
  let utilization = demand / capacity
  let passes = if ok == auto { utilization <= 1 } else { ok }
  let color = if passes { pass } else { fail }
  block(
    breakable: false,
    width: 100%,
    stroke: 0.8pt + black,
    inset: 8pt,
    radius: 2pt,
  )[
    #grid(
      columns: (1fr, auto),
      [#text(weight: "bold")[#label]],
      box(stroke: 0.8pt + color, inset: (x: 6pt, y: 2pt))[
        #text(weight: "bold", fill: color)[#if passes { "OK" } else { "NOT OK" }]
      ],
    )
    #v(4pt)
    #grid(
      columns: (1fr, auto),
      [
         #demand-label: #calc.round(demand, digits: 2) #unit #h(14pt)
         #capacity-label: #calc.round(capacity, digits: 2) #unit
      ],
      [
        D/C: #calc.round(utilization, digits: 2)
      ],
    )
  ]
}