Beamer Biem

\documentclass[10pt,aspectratio=169,]{beamer}

% load packages and helper commands
\input{theme/packages}
\input{theme/commands}

% Uni BI font (needs LaTeX engine xelatex or lualatex)
\usepackage[no-math]{fontspec}
\setmainfont[
    Path            = ./theme/,
    Extension       = .otf,
    Ligatures       = TeX,
    UprightFont     = *-Regular,
    ItalicFont      = *-RegularItalic,
    BoldFont        = *-Bold,
    BoldItalicFont  = *-BoldItalic
]{Lelo}

% Eco Uni BI beamer style
\usepackage{eco_bielefeld}

% for code blocks
  \usepackage{color}
  \usepackage{fancyvrb}
  \newcommand{\VerbBar}{|}
  \newcommand{\VERB}{\Verb[commandchars=\\\{\}]}
  \DefineVerbatimEnvironment{Highlighting}{Verbatim}{commandchars=\\\{\}}
  % Add ',fontsize=\small' for more characters per line
  \usepackage{framed}
  \definecolor{shadecolor}{RGB}{248,248,248}
  \newenvironment{Shaded}{\begin{snugshade}}{\end{snugshade}}
  \newcommand{\AlertTok}[1]{\textcolor[rgb]{0.94,0.16,0.16}{#1}}
  \newcommand{\AnnotationTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textbf{\textit{#1}}}}
  \newcommand{\AttributeTok}[1]{\textcolor[rgb]{0.13,0.29,0.53}{#1}}
  \newcommand{\BaseNTok}[1]{\textcolor[rgb]{0.00,0.00,0.81}{#1}}
  \newcommand{\BuiltInTok}[1]{#1}
  \newcommand{\CharTok}[1]{\textcolor[rgb]{0.31,0.60,0.02}{#1}}
  \newcommand{\CommentTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textit{#1}}}
  \newcommand{\CommentVarTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textbf{\textit{#1}}}}
  \newcommand{\ConstantTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{#1}}
  \newcommand{\ControlFlowTok}[1]{\textcolor[rgb]{0.13,0.29,0.53}{\textbf{#1}}}
  \newcommand{\DataTypeTok}[1]{\textcolor[rgb]{0.13,0.29,0.53}{#1}}
  \newcommand{\DecValTok}[1]{\textcolor[rgb]{0.00,0.00,0.81}{#1}}
  \newcommand{\DocumentationTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textbf{\textit{#1}}}}
  \newcommand{\ErrorTok}[1]{\textcolor[rgb]{0.64,0.00,0.00}{\textbf{#1}}}
  \newcommand{\ExtensionTok}[1]{#1}
  \newcommand{\FloatTok}[1]{\textcolor[rgb]{0.00,0.00,0.81}{#1}}
  \newcommand{\FunctionTok}[1]{\textcolor[rgb]{0.13,0.29,0.53}{\textbf{#1}}}
  \newcommand{\ImportTok}[1]{#1}
  \newcommand{\InformationTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textbf{\textit{#1}}}}
  \newcommand{\KeywordTok}[1]{\textcolor[rgb]{0.13,0.29,0.53}{\textbf{#1}}}
  \newcommand{\NormalTok}[1]{#1}
  \newcommand{\OperatorTok}[1]{\textcolor[rgb]{0.81,0.36,0.00}{\textbf{#1}}}
  \newcommand{\OtherTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{#1}}
  \newcommand{\PreprocessorTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textit{#1}}}
  \newcommand{\RegionMarkerTok}[1]{#1}
  \newcommand{\SpecialCharTok}[1]{\textcolor[rgb]{0.81,0.36,0.00}{\textbf{#1}}}
  \newcommand{\SpecialStringTok}[1]{\textcolor[rgb]{0.31,0.60,0.02}{#1}}
  \newcommand{\StringTok}[1]{\textcolor[rgb]{0.31,0.60,0.02}{#1}}
  \newcommand{\VariableTok}[1]{\textcolor[rgb]{0.00,0.00,0.00}{#1}}
  \newcommand{\VerbatimStringTok}[1]{\textcolor[rgb]{0.31,0.60,0.02}{#1}}
  \newcommand{\WarningTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textbf{\textit{#1}}}}
 

% metadata fields
\title[Short Title]{Title of Presentation}

\subtitle{Subtitle}

\author{\texorpdfstring{\underline{Presenter Name}}{\underline{Presenter Name}} \and \texorpdfstring{Contributor
Name}{Contributor Name}}

\date{30 April 2026}

\institute{Bielefeld University, Department Empirical Methods}

% section behavior
\newcommand{\biemtocname}{Outline}

\AtBeginSection[]{
  \begin{frame}
    \frametitle{\biemtocname}
    \tableofcontents[currentsection]
  \end{frame}
}

% start content
\begin{document}

\begin{frame}[plain]{}
  \titlepage
\end{frame}

\begin{frame}
  \frametitle{\biemtocname}
  \tableofcontents
\end{frame}

\section{Introduction}\label{introduction}

\begin{frame}{Welcome}
\phantomsection\label{welcome}
This template is designed for Beamer slides built from R Markdown.

\vskip 1em

It follows a Bielefeld University / Empirical Methods theme.

\vskip 1em

Feel free to use it at your own risk.
\end{frame}

\section{Content Examples}\label{content-examples}

\begin{frame}{Buttons, Columns, Lists, Tables}
\phantomsection\label{buttons-columns-lists-tables}
\hypertarget{buttons_slide}{}

\begin{columns}[T,totalwidth=\textwidth]
\column{0.3\textwidth}
Left

\hfill

\column{0.3\textwidth}
Middle

\hfill

\column{0.3\textwidth}
Right

\end{columns}

\vfill

This slide links to a detailed backup slide.

\appendixbutton{backup_column_details}{Details}

\begin{itemize}
\tightlist
\item
  Idea:

  \begin{itemize}
  \tightlist
  \item
    keep main message here
  \item
    move technical detail to appendix
  \end{itemize}
\item
  You can also click the topleft logo to jump to appendix
\end{itemize}

\vfill

\begin{longtable}[]{@{}lrr@{}}
\toprule\noalign{}
Scenario & Cost & Impact \\
\midrule\noalign{}
\endhead
Baseline & 100 & \\
Pilot & 115 & +6 \% \\
Target & 120 & +10 \% \\
\bottomrule\noalign{}
\end{longtable}
\end{frame}

\begin{frame}[fragile]{\lang{R}~Code and Output}
\phantomsection\label{code-and-output}
\begin{Shaded}
\begin{Highlighting}[]
\NormalTok{starwars }\SpecialCharTok{|\textgreater{}}
  \FunctionTok{select}\NormalTok{(name, species, homeworld) }\SpecialCharTok{|\textgreater{}}
  \FunctionTok{print}\NormalTok{(}\AttributeTok{n =} \DecValTok{3}\NormalTok{)}
\end{Highlighting}
\end{Shaded}

\begin{verbatim}
## # A tibble: 87 x 3
##   name           species homeworld
##   <chr>          <chr>   <chr>    
## 1 Luke Skywalker Human   Tatooine 
## 2 C-3PO          Droid   Tatooine 
## 3 R2-D2          Droid   Naboo    
## # i 84 more rows
\end{verbatim}
\end{frame}

\begin{frame}{Images from \lang{R}~Code}
\phantomsection\label{images-from-code}
\begin{figure}
\includegraphics[height=0.65\textheight]{figures/starwars-1} \caption{Species in Star Wars}\label{fig:starwars}
\end{figure}
\end{frame}

\begin{frame}{External Images}
\phantomsection\label{external-images}
\begin{center}
\includegraphics[width=0.8\textheight]{figures/approx.pdf}
\end{center}
\end{frame}

\begin{frame}{Math and Footnotes}
\phantomsection\label{math-and-footnotes}
You can use
\LaTeX~equations:\footnote{The expectation operator $\E$ is a makro, see the file theme/commands.tex for more.}

\[\hat{\beta} = (X^\top X)^{-1}X^\top y, \qquad \E(Y \mid X) = X\beta\]

You can use inline math too, e.g.~\(\alpha \in \R\).
\end{frame}

\begin{frame}{Quotes and Blocks}
\phantomsection\label{quotes-and-blocks}
\begin{quote}
"Without data, you’re just another person with an opinion." -- W. Edwards Deming
\end{quote}

\begin{block}{Title}
Use for neutral structure.
\end{block}

\begin{exampleblock}{Title}
Use for examples or recommended actions.
\end{exampleblock}

\begin{alertblock}{Title}
Use for caveats.
\end{alertblock}
\end{frame}

\section{Appendix}\label{appendix}

\begin{frame}{Appendix}
\hypertarget{appendix}{}

The start of the backup slides. You can provide an overview here:

\vfill

\begin{tabular}{p{2cm}p{2cm}}
  \overviewbutton{backup_column_details}{Column details}
\end{tabular}
\end{frame}

\begin{frame}{More details on columns}
\phantomsection\label{more-details-on-columns}
\hypertarget{backup_column_details}{}

If you want to use lists within columns, you need to explicitly use the
\code{itemize} environment:

\begin{columns}[T,totalwidth=\textwidth]
\column{0.4\textwidth}
\begin{itemize}
  \item this
  \item works
  \item well
\end{itemize}

\hfill

\column{0.4\textwidth}
- this
- does
- not
- work
\end{columns}

\returnbutton{buttons_slide}{Return}
\end{frame}

\begin{frame}[fragile]{}
  \vspace{0.5cm}

  \begin{center}
    {\Large Thanks for your attention!}
  \end{center}

  \vfill

  \begin{itemize}
    \item[{\protect\faEnvelope}] \href{mailto:name@example.com}{\nolinkurl{name@example.com}}
    \item[{\protect\faLaptop}] \url{https://example.com}
  \end{itemize}

\end{frame}

\end{document}