feat(ggg): flashcard formatting

ggg/ggg-cards.typ

@@ -1,7 +1,24 @@
 #import "@preview/cetz:0.4.0"
 
-#set page(margin: 1cm, columns: 2)
+/*
+* How to use for anki
+* -------------------
+*
+* typst compile ggg-cards.typ output/{0p}ggg-cards.svg
+* ls | while read -r a && read -r b; do 
+*   echo "<img src='$a'/>, <img src='$b'/>";
+* done > geometrische-grundlagen-der-geometrieverarbeitung.csv
+*
+* put all images from ./output in your ankis collection.media directory
+* 
+*/
+
+// #set page(margin: 1cm, columns: 2)
+#show heading: it => none
 #set heading(numbering: "1.1")
+#set par(justify: true)
+
+#show math.equation.where(block: false): box
 
 #set math.mat(delim: "[")
 #set math.vec(delim: "[")
@@ -13,13 +30,29 @@
   output
 }
 
+#let numberingH(c)={
+  return numbering(c.numbering,..counter(heading).at(c.location()))
+}
+
 #let card(
   question: "", 
   answer: ""
-) = rect(width: 100%)[
+) = [
+  // #rect(width: 100%)[
+    #set page("a7", flipped: true, width: auto, header: [
+      #context {
+        let h = query(selector(heading.where(level: 1)).before(here())).last()
+        let s = query(selector(heading.where(level: 2)).before(here())).last()
+        text(size: 7.8pt)[#smallcaps()[#numberingH(h) #h.body / #numberingH(s) #s.body]]
+      }
+    ])
+    #page()[
       #strong(question)
-
+    ]
+    #page()[
       #answer
+    ]
+  // ]
 ]