make utils follow font size

src/extra/util.typ

@@ -1,22 +1,37 @@
 
-#let TitleSize = 24pt
-#let SubtitleSize = 18pt
-#let LargetextSize = 14pt
+// general document information
+#let format = yaml("../../conf/format.yaml")
+
+#let TitleSize = 2
+#let SubtitleSize = 1.5
+#let LargetextSize = 1.25
+
+#let to_em(x) = {
+  x * 1em
+}
+
+#let to_cm(x) = {
+  x * 1cm
+}
+
+#let to_pt(x) = {
+  x * 1pt
+}
 
 // titles are bold and twice the size of normal text
 // also they are centered and not justified
 #let title(x) = {
-  align(center, par(justify: false, text(weight: "regular", size: TitleSize)[#x]))
+  align(center, par(justify: false, text(weight: "regular", size: to_pt(format.font-size) * TitleSize)[#x]))
 }
 
 // subtitles are 1.5x the size of normal text
 // also they are centered and not justified
 #let subtitle(x) = {
-  par(justify: false, text(size: SubtitleSize)[#x])
+  par(justify: false, text(size: to_pt(format.font-size) * SubtitleSize)[#x])
 }
 
 #let largetext(x) = {
-  par(justify: false, text(size: LargetextSize)[#x])
+  par(justify: false, text(size: to_pt(format.font-size) * LargetextSize)[#x])
 }
 
 #let signature = {
@@ -33,15 +48,3 @@
     align(left, "Unterschrift")
   )
 }
-
-#let to_em(x) = {
-  x * 1em
-}
-
-#let to_cm(x) = {
-  x * 1cm
-}
-
-#let to_pt(x) = {
-  x * 1pt
-}