\documentclass[usenames,dvipsnames,10pt,aspectratio=169]{beamer}
\usepackage{fontspec}
\setmainfont{Liberation Sans}
\setmonofont{Liberation Mono}
%\usepackage[margin=1in]{geometry}
\usepackage{hyperref}
\PassOptionsToPackage{usenames,dvipsnames}{color} % color is loaded by hyperref
\hypersetup{unicode=true,
$if(title-meta)$
            pdftitle={$title-meta$},
$endif$
$if(author-meta)$
            pdfauthor={$author-meta$},
$endif$
$if(keywords)$
            pdfkeywords={$for(keywords)$$keywords$$sep$; $endfor$},
$endif$
            colorlinks=true,
            linkcolor=$if(linkcolor)$$linkcolor$$else$Maroon$endif$,
            citecolor=$if(citecolor)$$citecolor$$else$Blue$endif$,
            urlcolor=$if(urlcolor)$$urlcolor$$else$Blue$endif$,
            breaklinks=true}
\urlstyle{same}  % don't use monospace font for urls

\setbeamercolor{title}{fg=Maroon}
\setbeamercolor{subtitle}{fg=MidnightBlue}
\setbeamercolor{frametitle}{fg=MidnightBlue}
\setbeamercolor{structure}{fg=MidnightBlue}

% Don't show things we don't want to see
\beamertemplatenavigationsymbolsempty

% Slide number in lower right
\setbeamertemplate{footline}{
	\raisebox{5pt}{
		\makebox[\paperwidth]{
      \hfill\makebox[0.15\linewidth]{\color{Gray} \footnotesize Torsten Meißner}
      \hfill\makebox[0.7\linewidth]{\color{Gray} \footnotesize \insertshorttitle}
			\hfill\makebox[0.15\linewidth]{\color{Gray} \footnotesize \insertframenumber ~/ \inserttotalframenumber}
		}
	}
	\hspace*{5pt}
}

% Color and shape of bullets
\setbeamercolor{item}{fg=Gray}
\setbeamercolor{subitem}{fg=Gray}
% \setbeamercolor{itemize/enumerate subbody}{fg=gray}
\setbeamertemplate{itemize item}{{\textendash}}
\setbeamertemplate{itemize subitem}{{\textendash}}
\setbeamerfont{itemize/enumerate subbody}{size=\footnotesize}
\setbeamerfont{itemize/enumerate subitem}{size=\footnotesize}

%\usepackage{fancyvrb}
%\DefineVerbatimEnvironment{verbatim}{Verbatim}{frame=leftline, fontsize=\small, baselinestretch=1.17}
%\VerbatimFootnotes % allows verbatim text in footnotes

\usepackage{listings}
\lstset{
	basicstyle=\ttfamily\scriptsize,
	keywordstyle=\color{Maroon},
	stringstyle=\color{NavyBlue},
	showstringspaces=false,
	frame=leftline,
	xleftmargin=5pt,
	tabsize=2,
}

$if(highlighting-macros)$
$highlighting-macros$
$endif$
$if(verbatim-in-note)$
\usepackage{fancyvrb}
\VerbatimFootnotes % allows verbatim text in footnotes
$endif$
$if(tables)$
\usepackage{longtable,booktabs}
\usepackage{caption}
% These lines are needed to make table captions work with longtable:
\makeatletter
\def\fnum@table{\tablename~\thetable}
\makeatother
$endif$
$if(graphics)$
\usepackage{graphicx,grffile}
\makeatletter
\def\maxwidth{\ifdim\Gin@nat@width>\linewidth\linewidth\else\Gin@nat@width\fi}
\def\maxheight{\ifdim\Gin@nat@height>\textheight0.8\textheight\else\Gin@nat@height\fi}
\makeatother
\centering
% Scale images if necessary, so that they will not overflow the page
% margins by default, and it is still possible to overwrite the defaults
% using explicit options in \includegraphics[width, height, ...]{}
\setkeys{Gin}{width=\maxwidth,height=\maxheight,keepaspectratio}
$endif$

% Prevent slide breaks in the middle of a paragraph:
\widowpenalties 1 10000
\raggedbottom

\newif\ifbibliography
$if(section-titles)$
\AtBeginPart{
  \let\insertpartnumber\relax
  \let\partname\relax
  \frame{\partpage}
}
\AtBeginSection{
  \ifbibliography
  \else
    \let\insertsectionnumber\relax
    \let\sectionname\relax
    \frame{\sectionpage}
  \fi
}
\AtBeginSubsection{
  \let\insertsubsectionnumber\relax
  \let\subsectionname\relax
  \frame{\subsectionpage}
}
$endif$

$if(links-as-notes)$
% Make links footnotes instead of hotlinks:
\renewcommand{\href}[2]{#2\footnote{\url{#1}}}
$endif$
$if(strikeout)$
\usepackage[normalem]{ulem}
% avoid problems with \sout in headers with hyperref:
\pdfstringdefDisableCommands{\renewcommand{\sout}{}}
$endif$
\setlength{\emergencystretch}{3em}  % prevent overfull lines
\providecommand{\tightlist}{%
  \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
$if(numbersections)$
\setcounter{secnumdepth}{5}
$else$
\setcounter{secnumdepth}{0}
$endif$
$if(dir)$
\ifxetex
  % load bidi as late as possible as it modifies e.g. graphicx
  $if(latex-dir-rtl)$
  \usepackage[RTLdocument]{bidi}
  $else$
  \usepackage{bidi}
  $endif$
\fi
\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
  \TeXXeTstate=1
  \newcommand{\RL}[1]{\beginR #1\endR}
  \newcommand{\LR}[1]{\beginL #1\endL}
  \newenvironment{RTL}{\beginR}{\endR}
  \newenvironment{LTR}{\beginL}{\endL}
\fi
$endif$

$if(title)$
\title{$title$}
$endif$
$if(subtitle)$
\subtitle{$subtitle$}
$endif$
$if(author)$
\author{$for(author)$$author$$sep$ \\ $endfor$}
$endif$
\date{$date$}

\begin{document}
$if(title)$
\frame{\maketitle}
$endif$

$for(include-before)$
$include-before$

$endfor$

$if(toc)$
\begin{frame}
\tableofcontents[hideallsubsections]
\end{frame}

$endif$
$body$

$for(include-after)$
$include-after$

$endfor$
\end{document}