// Fonts: Cinzel, EB Garamond (Google Fonts)
// Available at typst.app; for local CLI install both fonts on your system.

// ─── Palette ─────────────────────────────────────────────────────────────────
#let parchment      = rgb("#F2E8CB")
#let ink            = rgb("#1E0F06")
#let ink-muted      = rgb("#6B4226")
#let nigredo-col    = rgb("#3D3228")
#let albedo-col     = rgb("#9B9B8E")
#let citrinitas-col = rgb("#B8860B")
#let rubedo-col     = rgb("#962B1A")

// ─── Phase section header ─────────────────────────────────────────────────────
// name: phase name in caps, subtitle: English subtitle, col: phase colour,
// mode: italic descriptor line, body: section content
#let phase(name, subtitle, col, mode, body) = {
  v(1.6em)
  block(breakable: false)[
    #text(font: "Cinzel", size: 13pt, fill: col, weight: "bold")[#name]
    #text(font: "Cinzel", size: 13pt, fill: col)[ — #subtitle]
    #v(3pt)
    #line(length: 100%, stroke: 0.5pt + col)
    #v(5pt)
    #text(style: "italic", fill: ink-muted, size: 10.5pt)[#mode]
  ]
  v(0.7em)
  body
}

// ─── Failure-mode callout ─────────────────────────────────────────────────────
#let skip(body) = pad(left: 2em, top: 0.15em, bottom: 0.55em)[
  #text(style: "italic", fill: ink-muted, size: 10.5pt)[#body]
]

// ─── Symbol renderer (alchemical + geometric Unicode blocks) ─────────────────
#let sym(it) = text(
  font: ("Noto Sans Symbols 2", "Symbola", "Apple Symbols", "Segoe UI Symbol"),
  it,
)

// ─── Document wrapper ─────────────────────────────────────────────────────────
#let adoc(title: "", author: "", date: "", tagline: none, body) = {

  set page(
    paper: "a4",
    fill: parchment,
    margin: (top: 28mm, bottom: 30mm, left: 36mm, right: 24mm),
    numbering: "i",
    number-align: center,
  )

  set text(
    font: "EB Garamond",
    size: 11pt,
    fill: ink,
    lang: "en",
  )

  set par(
    leading: 0.75em,
    justify: true,
  )

  show heading.where(level: 1): it => {
    v(2em, weak: true)
    block(sticky: true)[
      #text(font: "Cinzel", size: 15pt, fill: ink, weight: "bold")[#it.body]
      #v(4pt)
      #line(length: 100%, stroke: 0.4pt + citrinitas-col)
      #v(0.7em)
    ]
  }

  show heading.where(level: 2): it => {
    v(1.4em, weak: true)
    text(font: "Cinzel", size: 11pt, fill: ink, tracking: 0.04em)[#it.body]
    v(0.5em, weak: true)
  }

  // ── Title block ──
  v(3em)
  align(center)[
    #text(font: "Cinzel", size: 24pt, fill: ink, weight: "bold")[#title]
  ]
  v(9pt)
  if tagline != none {
    align(center)[#tagline]
    v(9pt)
  }
  if author != "" or date != "" {
    let sig = if author != "" and date != "" { author + " · " + date }
              else if author != "" { author }
              else { date }
    pad(right: 2em)[
      #align(right)[
        #text(font: "EB Garamond", size: 9pt, fill: ink-muted, style: "italic")[#sig]
      ]
    ]
  }
  v(2.5em)

  body
}