Add duplex PDF build targets with pdftk page interleaving

- Add pdftk-java to Docker image for PDF page manipulation
- Extend generate_backside() to repeat back content num_pages times so
  front and back PDFs have matching page counts for pdftk shuffle
- Add build-duplex and build-blanko-duplex Makefile targets that combine
  front and back PDFs with alternating pages (front1, back1, front2, back2)
- Document duplex targets in README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -11,14 +11,16 @@
 *.pdf
 *.bak
 
-# Real participant data (copy to "Export Brevetkarte.csv" and fill in)
+# Real participant data (copy export_brevetcard.csv.example and fill in)
-Export Brevetkarte.csv
+export_brevetcard.csv
 
 # Real event data (copy event.yml.example to event.yml and fill in)
 event.yml
 
 # Generated files
 brevetkarte-personalized.tex
+brevetkarte-blanko.tex
+brevetkarte-rueckseite.tex
 
 # macOS
 .DS_Store

Dockerfile

@@ -5,14 +5,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     texlive-pictures \
     texlive-fonts-recommended \
     make \
+    python3 \
+    python3-yaml \
+    pdftk-java \
     && rm -rf /var/lib/apt/lists/*
 
-# Set working directory
 WORKDIR /workspace
-
-# Copy project files
-COPY brevetkarte.tex .
-COPY cyclist-logo.png .
-
-# Default command
-CMD ["pdflatex", "-interaction=nonstopmode", "brevetkarte.tex"]

Makefile

@@ -1,37 +1,27 @@
 # Makefile for building Brevet card PDF in Docker
 
 IMAGE_NAME := brevetcard-builder
-TEX_FILE_FRONT := brevetkarte.tex
-TEX_FILE_BACK := brevetkarte-rueckseite.tex
 TEX_FILE_PERSONALIZED := brevetkarte-personalized.tex
-PDF_FILE_FRONT := brevetkarte.pdf
+TEX_FILE_BLANKO := brevetkarte-blanko.tex
-PDF_FILE_BACK := brevetkarte-rueckseite.pdf
+TEX_FILE_BACK := brevetkarte-rueckseite.tex
 PDF_FILE_PERSONALIZED := brevetkarte-personalized.pdf
-CSV_FILE := Export Brevetkarte.csv
+PDF_FILE_BLANKO := brevetkarte-blanko.pdf
+PDF_FILE_BACK := brevetkarte-rueckseite.pdf
+PDF_FILE_DUPLEX := brevetkarte-duplex.pdf
+PDF_FILE_BLANKO_DUPLEX := brevetkarte-blanko-duplex.pdf
+CSV_FILE := export_brevetcard.csv
 
-.PHONY: all build clean build-image build-front build-back generate build-personalized run shell help
+.PHONY: all build clean build-image build-back generate build-personalized build-blanko build-duplex build-blanko-duplex run shell help
 
 # Default target
-all: build
+all: build-personalized build-blanko
-
-# Build static demo front side (builds image if needed)
-build: build-image build-front
 
 # Build Docker image
 build-image:
 	@echo "Building Docker image..."
 	docker build -t $(IMAGE_NAME) .
 
-# Compile static demo front side PDF
+# Compile back side PDF (after generate)
-build-front:
-	@echo "Compiling front side LaTeX to PDF..."
-	docker run --rm \
-		-v $(PWD):/workspace \
-		$(IMAGE_NAME) \
-		pdflatex -interaction=nonstopmode $(TEX_FILE_FRONT)
-	@echo "PDF generated: $(PDF_FILE_FRONT)"
-
-# Compile back side PDF (always generated from event.yml via generate)
 build-back: build-image
 	@echo "Compiling back side LaTeX to PDF..."
 	docker run --rm \
@@ -41,12 +31,15 @@ build-back: build-image
 	@echo "PDF generated: $(PDF_FILE_BACK)"
 
 # Generate all tex files from CSV + event.yml
-generate:
+generate: build-image
 	@echo "Generating cards from $(CSV_FILE) + event.yml..."
 	@if [ ! -f "$(CSV_FILE)" ]; then \
 		echo "Error: $(CSV_FILE) not found!"; \
 		exit 1; \
 	fi
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
 		python3 generate_cards.py
 
 # Build personalized front + event back side PDFs
@@ -64,6 +57,44 @@ build-personalized: generate build-image
 		pdflatex -interaction=nonstopmode $(TEX_FILE_BACK)
 	@echo "PDF generated: $(PDF_FILE_BACK)"
 
+# Build blank (blanko) front + event back side PDFs (no CSV required)
+build-blanko: build-image
+	@echo "Generating blank card..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		python3 generate_cards.py --blanko
+	@echo "Compiling blank front side to PDF..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		pdflatex -interaction=nonstopmode $(TEX_FILE_BLANKO)
+	@echo "PDF generated: $(PDF_FILE_BLANKO)"
+	@echo "Compiling back side to PDF..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		pdflatex -interaction=nonstopmode $(TEX_FILE_BACK)
+	@echo "PDF generated: $(PDF_FILE_BACK)"
+
+# Build duplex PDF (personalized front + back interleaved for duplex printing)
+build-duplex: build-personalized
+	@echo "Combining front and back for duplex printing..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		pdftk A=$(PDF_FILE_PERSONALIZED) B=$(PDF_FILE_BACK) shuffle A B output $(PDF_FILE_DUPLEX)
+	@echo "PDF generated: $(PDF_FILE_DUPLEX)"
+
+# Build duplex PDF (blank front + back interleaved for duplex printing)
+build-blanko-duplex: build-blanko
+	@echo "Combining blank front and back for duplex printing..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		pdftk A=$(PDF_FILE_BLANKO) B=$(PDF_FILE_BACK) shuffle A B output $(PDF_FILE_BLANKO_DUPLEX)
+	@echo "PDF generated: $(PDF_FILE_BLANKO_DUPLEX)"
+
 # Run container interactively
 run:
 	docker run --rm -it \
@@ -81,7 +112,7 @@ shell:
 # Clean generated files
 clean:
 	@echo "Cleaning generated files..."
-	rm -f *.aux *.log *.out *.toc *.pdf
+	rm -f *.aux *.log *.out *.toc *.pdf brevetkarte-personalized.tex brevetkarte-blanko.tex brevetkarte-rueckseite.tex $(PDF_FILE_DUPLEX) $(PDF_FILE_BLANKO_DUPLEX)
 
 # Clean everything including Docker image
 clean-all: clean
@@ -89,19 +120,21 @@ clean-all: clean
 	docker rmi $(IMAGE_NAME) 2>/dev/null || true
 
 # Rebuild from scratch
-rebuild: clean-all build
+rebuild: clean-all build-personalized
 
 # Show help
 help:
 	@echo "Brevet Card PDF Builder"
 	@echo ""
 	@echo "Available targets:"
-	@echo "  make build              - Build Docker image and compile static front side (default)"
+	@echo "  make                    - Generate and compile front + back side PDFs (default)"
 	@echo "  make build-image        - Build Docker image only"
-	@echo "  make build-front        - Compile static demo front side PDF"
 	@echo "  make generate           - Generate tex files from CSV + event.yml"
 	@echo "  make build-personalized - Generate and compile front + back side PDFs"
-	@echo "  make build-back         - Compile back side PDF (after generate)"
+	@echo "  make build-blanko       - Generate and compile blank card (no CSV needed)"
+	@echo "  make build-duplex       - Build duplex PDF (front+back interleaved)"
+	@echo "  make build-blanko-duplex - Build blank duplex PDF"
+	@echo "  make build-back         - Compile back side PDF only (after generate)"
 	@echo "  make shell              - Open interactive shell in container"
 	@echo "  make clean              - Remove generated files (aux, log, pdf)"
 	@echo "  make clean-all          - Remove all files and Docker image"

README.md

@@ -6,14 +6,13 @@ LaTeX-basierter Generator für Audax Randonneurs Allemagne Brevetkarten mit Vord
 
 - Docker
 - Make
-- Python 3 + PyYAML (`pip install pyyaml`)
 
 ## Konfigurationsdateien
 
 Vor dem ersten Build zwei Dateien aus den Beispielen anlegen und befüllen:
 
 ```bash
-cp "Export Brevetkarte.csv.example" "Export Brevetkarte.csv"
+cp export_brevetcard.csv.example export_brevetcard.csv
 cp event.yml.example event.yml
 ```
 
@@ -52,7 +51,7 @@ Teilnehmerdaten im Format:
 Startnr, Nachname, Vorname, Straße, PLZ, Ort, Land, Medaille
 ```
 
-Siehe `Export Brevetkarte.csv.example` für das vollständige Format.
+Siehe `export_brevetcard.csv.example` für das vollständige Format.
 
 ## Verwendung
 
@@ -68,6 +67,25 @@ Führt folgende Schritte aus:
 3. Erzeugt `brevetkarte-rueckseite.tex` (Rückseite mit Kontrollpunkten aus event.yml)
 4. Kompiliert beide .tex-Dateien zu PDFs
 
+### Duplex-PDF erzeugen
+
+```bash
+make build-duplex        # personalisierte Karten
+make build-blanko-duplex # Blanko-Karten
+```
+
+Erzeugt ein einzelnes PDF mit abwechselnden Vorder- und Rückseiten für den direkten Duplexdruck: Seite 1 Vorderseite, Seite 2 Rückseite, Seite 3 nächste Vorderseite, usw. Erfordert kein manuelles Zusammenführen zweier Dateien.
+
+### Blanko-Karten erzeugen und bauen
+
+```bash
+make build-blanko
+```
+
+Erzeugt Blanko-Karten ohne Teilnehmerdaten — keine `export_brevetcard.csv` erforderlich. Sinnvoll für Nachmeldungen oder als Reservekarten vor Ort. Die Veranstaltungsdaten aus `event.yml` werden übernommen, die Teilnehmerfelder bleiben leer.
+
+Ausgabe: `brevetkarte-blanko.pdf` (Vorderseite) + `brevetkarte-rueckseite.pdf` (Rückseite)
+
 ### Einzelne Schritte
 
 ```bash
@@ -76,9 +94,6 @@ make generate
 
 # Nur Rückseite kompilieren (nach generate)
 make build-back
-
-# Statische Demo-Vorderseite bauen (ohne CSV, für Tests)
-make build-front
 ```
 
 ### Weitere Befehle
@@ -96,11 +111,10 @@ make help          # Alle Befehle anzeigen
 | Datei | Beschreibung |
 |---|---|
 | `event.yml.example` | Vorlage für Veranstaltungsdaten (→ als `event.yml` kopieren) |
-| `Export Brevetkarte.csv.example` | Vorlage für Teilnehmerdaten (→ als `Export Brevetkarte.csv` kopieren) |
+| `export_brevetcard.csv.example` | Vorlage für Teilnehmerdaten (→ als `export_brevetcard.csv` kopieren) |
 | `brevetkarte-template.tex` | Vorlage Vorderseite (Platzhalter aus CSV + event.yml) |
 | `brevetkarte-rueckseite-template.tex` | Vorlage Rückseite (Zellplatzhalter aus event.yml) |
-| `brevetkarte.tex` | Statische Demo-Vorderseite (ohne Personalisierung) |
+| `generate_cards.py` | Generiert .tex-Dateien aus Templates + Konfiguration |
-| `generate_cards.py` | Generiert personalisierte .tex-Dateien |
 | `cyclist-logo.png` | Audax Randonneurs Logo |
 | `Dockerfile` | Docker-Image-Definition (debian:bookworm-slim + TeX Live) |
 | `Makefile` | Build-Automatisierung |

brevetkarte-rueckseite-template.tex

@@ -1,7 +1,7 @@
 \documentclass[a4paper,10pt,landscape]{article}
 \usepackage[utf8]{inputenc}
 \usepackage[T1]{fontenc}
-\usepackage[landscape,top=0.8cm,bottom=0.8cm,left=0.8cm,right=0.8cm]{geometry}
+\usepackage[landscape,top=0.6cm,bottom=0.6cm,left=0.6cm,right=0.6cm]{geometry}
 \usepackage{array}
 \usepackage{helvet}
 
@@ -12,107 +12,107 @@
 \setlength{\tabcolsep}{3pt}
 \pagestyle{empty}
 
-\newcommand{\rowheight}{2.833cm}
+\newcommand{\rowheight}{3.167cm}
 
 \begin{document}
 
 % Upper card table (rows 1-3)
 \noindent
-\begin{tabular}{|p{6.6cm}|p{6.6cm}|p{6.6cm}|p{6.6cm}|}
+\begin{tabular}{|p{6.9cm}|p{6.9cm}|p{6.9cm}|p{6.9cm}|}
 \hline
 % Row 1
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_1}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_2}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_3}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_4}}}
 \\
 \hline
 
 % Row 2
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_1}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_2}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_3}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_4}}}
 \\
 \hline
 
 % Row 3
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_1}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_2}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_3}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_4}}}
 \\
 \hline
 \end{tabular}
 
-\vspace{1.8cm}
+\vspace{0.6cm}
 
 % Lower card table (rows 1-3, identical)
 \noindent
-\begin{tabular}{|p{6.6cm}|p{6.6cm}|p{6.6cm}|p{6.6cm}|}
+\begin{tabular}{|p{6.9cm}|p{6.9cm}|p{6.9cm}|p{6.9cm}|}
 \hline
 % Row 1
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_1}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_2}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_3}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_1_4}}}
 \\
 \hline
 
 % Row 2
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_1}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_2}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_3}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_2_4}}}
 \\
 \hline
 
 % Row 3
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_1}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_2}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_3}}}
 &
-\parbox[c][\rowheight][t]{6.5cm}{%
+\parbox[c][\rowheight][t]{6.8cm}{%
 {{CELL_3_4}}}
 \\
 \hline

brevetkarte-rueckseite.tex

@@ -1,185 +0,0 @@
-\documentclass[a4paper,10pt,landscape]{article}
-\usepackage[utf8]{inputenc}
-\usepackage[T1]{fontenc}
-\usepackage[landscape,top=0.8cm,bottom=0.8cm,left=0.8cm,right=0.8cm]{geometry}
-\usepackage{array}
-\usepackage{helvet}
-
-% Set sans-serif font as default
-\renewcommand{\familydefault}{\sfdefault}
-
-\setlength{\parindent}{0pt}
-\setlength{\tabcolsep}{3pt}
-\pagestyle{empty}
-
-\newcommand{\rowheight}{2.833cm}
-
-\begin{document}
-
-% Upper card table (rows 1-3)
-\noindent
-\begin{tabular}{|p{6.6cm}|p{6.6cm}|p{6.6cm}|p{6.6cm}|}
-\hline
-% Row 1
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 1:} Km 0 -- Unisport\\
-Nachtigallenweg 86, Bonn\\
-\\
-\textbf{Kontrollzeit}\\
-von: 7:30\\
-bis: 8:30}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 4:} Km 165 -- Mahlberg Ecke K50,\\
-Breitestraße\\
-\textbf{Kontrollzeit}\\
-von: 13:21\\
-bis: 19:30}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Kontrollfrage:}\\
-Wann wurde das Kriegerdenkmal\\
-eingerichtet?}
-\\
-\hline
-
-% Row 2
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 2:} Km 57 -- ,,Nationalpark-Tor`` im\\
-alten Bahnhofsgebäude, Heimbach\\
-\\
-\textbf{Kontrollzeit}\\
-von: 9:11\\
-bis: 12:21}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 5:} Km 205 -- Unisport\\
-Nachtigallenweg 86, Bonn\\
-\\
-\textbf{Kontrollzeit}\\
-von: 13:23\\
-bis: 21:00}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-\\
-\hline
-
-% Row 3
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 3:} Km 100 -- Friterie ,,Au Petit\\
-Creux`` oder Total-Tankstelle, Ecke Rue\\
-de Botrange/Rue de Charmilles, Waimes\\
-\textbf{Kontrollzeit}\\
-von: 11:26\\
-bis: 15:10}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-\\
-\hline
-\end{tabular}
-
-\vspace{1.8cm}
-
-% Lower card table (rows 1-3, identical)
-\noindent
-\begin{tabular}{|p{6.6cm}|p{6.6cm}|p{6.6cm}|p{6.6cm}|}
-\hline
-% Row 1
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 1:} Km 0 -- Unisport\\
-Nachtigallenweg 86, Bonn\\
-\\
-\textbf{Kontrollzeit}\\
-von: 7:30\\
-bis: 8:30}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 4:} Km 165 -- Mahlberg Ecke K50,\\
-Breitestraße\\
-\textbf{Kontrollzeit}\\
-von: 13:21\\
-bis: 19:30}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Kontrollfrage:}\\
-Wann wurde das Kriegerdenkmal\\
-eingerichtet?}
-\\
-\hline
-
-% Row 2
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 2:} Km 57 -- ,,Nationalpark-Tor`` im\\
-alten Bahnhofsgebäude, Heimbach\\
-\\
-\textbf{Kontrollzeit}\\
-von: 9:11\\
-bis: 12:21}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 5:} Km 205 -- Unisport\\
-Nachtigallenweg 86, Bonn\\
-\\
-\textbf{Kontrollzeit}\\
-von: 13:23\\
-bis: 21:00}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-\\
-\hline
-
-% Row 3
-\parbox[c][\rowheight][t]{6.5cm}{%
-\vspace{2mm}
-\textbf{Nr. 3:} Km 100 -- Friterie ,,Au Petit\\
-Creux`` oder Total-Tankstelle, Ecke Rue\\
-de Botrange/Rue de Charmilles, Waimes\\
-\textbf{Kontrollzeit}\\
-von: 11:26\\
-bis: 15:10}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-&
-\parbox[c][\rowheight][t]{6.5cm}{%
-}
-\\
-\hline
-\end{tabular}
-
-\end{document}

brevetkarte-template.tex

@@ -1,7 +1,7 @@
 \documentclass[a4paper,10pt,landscape]{article}
 \usepackage[utf8]{inputenc}
 \usepackage[T1]{fontenc}
-\usepackage[landscape,top=0.8cm,bottom=0.8cm,left=0.8cm,right=0.8cm]{geometry}
+\usepackage[landscape,top=0.6cm,bottom=0.6cm,left=0.6cm,right=0.6cm]{geometry}
 \usepackage{graphicx}
 \usepackage{xcolor}
 \usepackage{tikz}
@@ -29,34 +29,34 @@
 
 % Brevet card for {{NAME}} (Start #{{STARTNR}})
 \noindent
-\begin{tikzpicture}[x=1cm,y=1cm]
+\begin{tikzpicture}[x=0.990cm,y=1cm]
 
 % Black vertical separator lines (drawn first, extend through headers)
-\draw[black,line width=0.5pt] (6.9,-7.2) -- (6.9,1.3);
+\draw[black,line width=0.5pt] (7.2,-8.2) -- (7.2,1.3);
-\draw[black,line width=0.5pt] (13.8,-7.2) -- (13.8,1.3);
+\draw[black,line width=0.5pt] (14.4,-8.2) -- (14.4,1.3);
-\draw[black,line width=0.5pt] (20.7,-7.2) -- (20.7,1.3);
+\draw[black,line width=0.5pt] (21.6,-8.2) -- (21.6,1.3);
 
 % Black header boxes (drawn on top)
-\fill[headerblack] (0,0) rectangle (6.9,1.3);
+\fill[headerblack] (0,0) rectangle (7.2,1.3);
-\node[white,align=center,font=\tiny,text width=6.6cm] at (3.45,0.65) {
+\node[white,align=center,font=\tiny,text width=6.9cm] at (3.6,0.65) {
   Jeder Teilnehmer muss diese Brevetkarte zu jeder Zeit\\
   mit sich führen und an den Kontrollen abstempeln lassen\\
   bzw. Fotos erstellen.\\
   \textbf{Ohne Kontrollzeiten und Zielzeit keine Wertung!}
 };
 
-\fill[headerblack] (6.9,0) rectangle (13.8,1.3);
+\fill[headerblack] (7.2,0) rectangle (14.4,1.3);
-\node[white,font=\Large] at (10.35,0.65) {HOMOLOGATION};
+\node[white,font=\Large] at (10.8,0.65) {HOMOLOGATION};
 
-\fill[headerblack] (13.8,0) rectangle (20.7,1.3);
+\fill[headerblack] (14.4,0) rectangle (21.6,1.3);
-\node[white,font=\Large] at (17.25,0.65) {TEILNEHMER/-IN};
+\node[white,font=\Large] at (18.0,0.65) {TEILNEHMER/-IN};
 
-\fill[headerblack] (20.7,0) rectangle (27.6,1.3);
+\fill[headerblack] (21.6,0) rectangle (28.8,1.3);
-\node[white,align=center,font=\normalsize] at (24.15,0.75) {BREVET DES RANDONNEURS};
+\node[white,align=center,font=\normalsize] at (25.2,0.75) {BREVET DES RANDONNEURS};
-\node[white,font=\Large] at (24.15,0.35) {MONDIAUX};
+\node[white,font=\Large] at (25.2,0.35) {MONDIAUX};
 
 % Column 1 - Rules (left section)
-\node[anchor=north west,text width=6.6cm,font=\small,align=left] at (0.2,-0.3) {
+\node[anchor=north west,text width=6.9cm,font=\small,align=left] at (0.2,-0.3) {
   \textbf{Es gelten die Regeln von}\\
   \textbf{Randonneur Mondiaux}\\
   \textbf{insbesondere:}
@@ -73,28 +73,28 @@
   \hspace{0.3cm}$\Rightarrow$ \textbf{\underline{Bei Verstoß keine Wertung!}}\\[0.3cm]
 };
 
-\node[anchor=south west,text width=6.6cm,font=\small,align=left] at (0.2,-7.0) {
+\node[anchor=south west,text width=6.9cm,font=\small,align=left] at (0.2,-8.0) {
   \textbf{AUDAX RANDONNEURS ALLEMAGNE E.V.}\\
   \href{http://www.audax-randonneure.de}{www.audax-randonneure.de}\\
   - gegründet 1992 in Hamburg -
 };
 
 % Column 2 - Homologation (middle-left section)
-\node[anchor=north,text width=6.6cm,font=\small,align=center] at (10.35,-0.5) {
+\node[anchor=north,text width=6.9cm,font=\small,align=center] at (10.8,-0.5) {
   Der Randonnée wurde beendet in:\\[0.6cm]
   \makebox[2cm]{\dotfill}h\makebox[2cm]{\dotfill}min
 };
 
-\node[anchor=center,font=\Large] at (10.35,-4.0) {
+\node[anchor=center,font=\Large] at (10.8,-4.0) {
   HOMOLOGATION
 };
 
-\node[anchor=south,text width=6.6cm,font=\small,align=center] at (10.35,-6.8) {
+\node[anchor=south,text width=6.9cm,font=\small,align=center] at (10.8,-7.8) {
   Brevet N° \makebox[5cm]{\dotfill}
 };
 
 % Column 3 - Participant Info (middle-right section)
-\node[anchor=north west,text width=6.6cm,font=\small,align=left] at (14.0,-0.5) {
+\node[anchor=north west,text width=6.9cm,font=\small,align=left] at (14.6,-0.5) {
   Name: {{NAME}}\\[0.4cm]
   Straße: {{STREET}}\\[0.4cm]
   PLZ/Ort: {{PLZ_ORT}}\\[0.4cm]
@@ -104,11 +104,11 @@
 };
 
 % Column 4 - Event Info (right section)
-\node[anchor=north,text width=6.6cm,align=center] at (24.15,-0.4) {
+\node[anchor=north,text width=6.9cm,align=center] at (25.2,-0.4) {
   \includegraphics[width=5.5cm]{cyclist-logo.png}
 };
 
-\node[anchor=north,text width=6.6cm,font=\small,align=center] at (24.15,-2.2) {
+\node[anchor=north,text width=6.9cm,font=\small,align=center] at (25.2,-2.2) {
   \textbf{{{EVENT_TITLE}}}\\
   Randonnée über \textbf{{{EVENT_KM}}} km\\
   am \textbf{{{EVENT_DATE}}}\\
@@ -117,7 +117,7 @@
   N° ACP du Club \textbf{{{EVENT_CLUB_NR}}}
 };
 
-\node[anchor=south,text width=6.6cm,font=\scriptsize,align=center] at (24.15,-7.0) {
+\node[anchor=south,text width=6.9cm,font=\scriptsize,align=center] at (25.2,-8.0) {
   CONTRÔLÉE ET HOMOLOGUÉE EXCLUSIVEMENT PAR\\
   \href{http://www.audax-club-parisien.com}{www.audax-club-parisien.com}\\
   - Société fondée en 1904 -

brevetkarte.tex

@@ -1,139 +0,0 @@
-\documentclass[a4paper,10pt,landscape]{article}
-\usepackage[utf8]{inputenc}
-\usepackage[T1]{fontenc}
-\usepackage[landscape,top=0.8cm,bottom=0.8cm,left=0.8cm,right=0.8cm]{geometry}
-\usepackage{graphicx}
-\usepackage{xcolor}
-\usepackage{tikz}
-\usepackage{helvet}
-\usepackage{hyperref}
-
-% Set sans-serif font as default
-\renewcommand{\familydefault}{\sfdefault}
-
-% Define colors
-\definecolor{headerblack}{RGB}{0,0,0}
-
-% Configure hyperlinks to be black
-\hypersetup{
-  colorlinks=true,
-  linkcolor=black,
-  urlcolor=black,
-  citecolor=black
-}
-
-\setlength{\parindent}{0pt}
-\pagestyle{empty}
-
-% Command to create one brevet card
-\newcommand{\brevetcard}{%
-\noindent
-\begin{tikzpicture}[x=1cm,y=1cm]
-
-% Black vertical separator lines (drawn first, extend through headers)
-\draw[black,line width=0.5pt] (6.9,-7.2) -- (6.9,1.3);
-\draw[black,line width=0.5pt] (13.8,-7.2) -- (13.8,1.3);
-\draw[black,line width=0.5pt] (20.7,-7.2) -- (20.7,1.3);
-
-% Black header boxes (drawn on top)
-\fill[headerblack] (0,0) rectangle (6.9,1.3);
-\node[white,align=center,font=\tiny,text width=6.6cm] at (3.45,0.65) {
-  Jeder Teilnehmer muss diese Brevetkarte zu jeder Zeit\\
-  mit sich führen und an den Kontrollen abstempeln lassen\\
-  bzw. Fotos erstellen.\\
-  \textbf{Ohne Kontrollzeiten und Zielzeit keine Wertung!}
-};
-
-\fill[headerblack] (6.9,0) rectangle (13.8,1.3);
-\node[white,font=\Large] at (10.35,0.65) {HOMOLOGATION};
-
-\fill[headerblack] (13.8,0) rectangle (20.7,1.3);
-\node[white,font=\Large] at (17.25,0.65) {TEILNEHMER/-IN};
-
-\fill[headerblack] (20.7,0) rectangle (27.6,1.3);
-\node[white,align=center,font=\normalsize] at (24.15,0.75) {BREVET DES RANDONNEURS};
-\node[white,font=\Large] at (24.15,0.35) {MONDIAUX};
-
-% Column 1 - Rules (left section)
-\node[anchor=north west,text width=6.6cm,font=\small,align=left] at (0.2,-0.3) {
-  \textbf{Es gelten die Regeln von}\\
-  \textbf{Randonneur Mondiaux}\\
-  \textbf{insbesondere:}
-  {\setlength{\leftmargini}{0.4cm}%
-  \begin{itemize}%
-  \setlength{\itemsep}{1pt}\setlength{\topsep}{2pt}\setlength{\parsep}{0pt}
-    \item Einhaltung der StVO
-    \item Beleuchtung und Sicherheitsweste/-Gurt
-    \item keine Abkürzungen
-    \item keine Begleitfahrzeuge
-    \item Rücksicht auf Teilnehmer und Umwelt
-    \item Rücksicht in den Kontrollen
-  \end{itemize}}
-  \hspace{0.3cm}$\Rightarrow$ \textbf{\underline{Bei Verstoß keine Wertung!}}\\[0.3cm]
-  -
-};
-
-\node[anchor=south west,text width=6.6cm,font=\small,align=left] at (0.2,-7.0) {
-  \textbf{AUDAX RANDONNEURS ALLEMAGNE E.V.}\\
-  \href{http://www.audax-randonneure.de}{www.audax-randonneure.de}\\
-  - gegründet 1992 in Hamburg -
-};
-
-% Column 2 - Homologation (middle-left section)
-\node[anchor=north,text width=6.6cm,font=\small,align=center] at (10.35,-0.5) {
-  Der Randonnée wurde beendet in:\\[0.6cm]
-  \makebox[2cm]{\dotfill}h\makebox[2cm]{\dotfill}min
-};
-
-\node[anchor=center,font=\Large] at (10.35,-4.0) {
-  HOMOLOGATION
-};
-
-\node[anchor=south,text width=6.6cm,font=\small,align=center] at (10.35,-6.8) {
-  Brevet N° \makebox[5cm]{\dotfill}
-};
-
-% Column 3 - Participant Info (middle-right section)
-\node[anchor=north west,text width=6.6cm,font=\small,align=left] at (14.0,-0.5) {
-  Name:\\[0.4cm]
-  Straße:\\[0.4cm]
-  PLZ/Ort:\\[0.4cm]
-  Land:\\[0.4cm]
-  Medaille:\\[0.6cm]
-  Startzeit: 8:30
-};
-
-% Column 4 - Event Info (right section)
-\node[anchor=north,text width=6.6cm,align=center] at (24.15,-0.4) {
-  \includegraphics[width=5.5cm]{cyclist-logo.png}
-};
-
-\node[anchor=north,text width=6.6cm,font=\small,align=center] at (24.15,-2.2) {
-  \textbf{Auf eine Pommes nach Belgien}\\
-  Randonnée über \textbf{200} km\\
-  am \textbf{20. September 2025}\\
-  mit Start in \textbf{Bonn, Uni-Sportgelände}\\
-  von \textbf{ARA Rheinland}\\
-  N° ACP du Club \textbf{111011}
-};
-
-\node[anchor=south,text width=6.6cm,font=\scriptsize,align=center] at (24.15,-7.0) {
-  CONTRÔLÉE ET HOMOLOGUÉE EXCLUSIVEMENT PAR\\
-  \href{http://www.audax-club-parisien.com}{www.audax-club-parisien.com}\\
-  - Société fondée en 1904 -
-};
-
-\end{tikzpicture}
-}
-
-\begin{document}
-
-% First brevet card
-\brevetcard
-
-\vspace{0.8cm}
-
-% Second brevet card (identical)
-\brevetcard
-
-\end{document}

generate_cards.py

@@ -2,6 +2,7 @@
 """
 Generate personalized brevet cards from CSV and event config.
 """
+import argparse
 import csv
 import sys
 from pathlib import Path
@@ -58,7 +59,7 @@ def apply_event_placeholders(text, config):
     return text
 
 
-def generate_backside(template, config):
+def generate_backside(template, config, num_pages=1):
     """Fill back side template with cell content from event config."""
     cells = config.get('backside', {})
     result = template
@@ -70,8 +71,19 @@ def generate_backside(template, config):
             if content is None:
                 content = ""
             result = result.replace(placeholder, content.strip())
+
+    if num_pages <= 1:
         return result
 
+    # Repeat body between \begin{document} and \end{document} num_pages times
+    begin_marker = '\\begin{document}\n'
+    end_marker = '\\end{document}'
+    begin_idx = result.find(begin_marker) + len(begin_marker)
+    end_idx = result.rfind(end_marker)
+    preamble = result[:begin_idx]
+    body = result[begin_idx:end_idx].rstrip()
+    return preamble + ('\n\n\\newpage\n\n').join([body] * num_pages) + '\n' + result[end_idx:]
+
 
 def generate_card_from_template(template, data):
     """Replace participant placeholders in template with participant data."""
@@ -92,8 +104,24 @@ def generate_card_from_template(template, data):
     return card
 
 
+def generate_blanko_card(template):
+    """Generate a blank card with empty participant fields."""
+    card = template.replace('{{NAME}}', '')
+    card = card.replace('{{STREET}}', '')
+    card = card.replace('{{PLZ_ORT}}', '')
+    card = card.replace('{{LAND}}', '')
+    card = card.replace('{{MEDAILLE}}', '')
+    card = card.replace('{{STARTNR}}', '')
+    return card
+
+
 def main():
-    csv_file = Path("Export Brevetkarte.csv")
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--blanko', action='store_true',
+                        help='Generate blank card without participant data')
+    args = parser.parse_args()
+
+    csv_file = Path("export_brevetcard.csv")
     template_file = Path("brevetkarte-template.tex")
     backside_template_file = Path("brevetkarte-rueckseite-template.tex")
     event_config_file = Path("event.yml")
@@ -112,6 +140,24 @@ def main():
     template = template_file.read_text(encoding='utf-8')
     template = apply_event_placeholders(template, event_config)
 
+    # Split preamble from body so \begin{document} appears only once per file
+    marker = '\\begin{document}'
+    doc_idx = template.find(marker)
+    preamble = template[:doc_idx + len(marker)]
+    body = template[doc_idx + len(marker):]
+
+    if args.blanko:
+        blanko_output_file = Path("brevetkarte-blanko.tex")
+        blanko_body = generate_blanko_card(body)
+        blanko_output = preamble + blanko_body + "\n\\vspace{0.6cm}\n\n" + blanko_body + "\n\\end{document}\n"
+        blanko_output_file.write_text(blanko_output, encoding='utf-8')
+        print(f"Generated {blanko_output_file}")
+        backside_template = backside_template_file.read_text(encoding='utf-8')
+        backside_output = generate_backside(backside_template, event_config, num_pages=1)
+        backside_output_file.write_text(backside_output, encoding='utf-8')
+        print(f"Generated {backside_output_file}")
+        return
+
     print(f"Reading participant data from {csv_file}...")
     participants = []
     with open(csv_file, 'r', encoding='utf-8-sig') as f:
@@ -129,14 +175,14 @@ def main():
     # Generate personalized front side
     cards = []
     for participant in participants:
-        card = generate_card_from_template(template, participant)
+        card = generate_card_from_template(body, participant)
         cards.append(card)
 
-    document_parts = []
+    document_parts = [preamble]
     for i, card in enumerate(cards):
         document_parts.append(card)
         if i % 2 == 0 and i < len(cards) - 1:
-            document_parts.append("\n\\vspace{0.8cm}\n\n")
+            document_parts.append("\n\\vspace{0.6cm}\n\n")
         if i % 2 == 1 and i < len(cards) - 1:
             document_parts.append("\n\\newpage\n\n")
 
@@ -144,10 +190,11 @@ def main():
     output_file.write_text(''.join(document_parts), encoding='utf-8')
     print(f"Generated {output_file}")
 
-    # Generate personalized back side
+    # Generate personalized back side (one page per front page for duplex)
+    num_pages = (len(participants) + 1) // 2
     print(f"Reading back side template from {backside_template_file}...")
     backside_template = backside_template_file.read_text(encoding='utf-8')
-    backside_output = generate_backside(backside_template, event_config)
+    backside_output = generate_backside(backside_template, event_config, num_pages=num_pages)
     backside_output_file.write_text(backside_output, encoding='utf-8')
     print(f"Generated {backside_output_file}")