\documentclass[a4paper,12pt]{article}

\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{authblk}
\usepackage{graphicx}
\usepackage{mathptmx}
\usepackage[singlespacing]{setspace}
\usepackage[headheight=1in,margin=1in]{geometry}
\usepackage{fancyhdr}

\renewcommand{\headrulewidth}{0pt}
\pagestyle{fancy}
\setcounter{secnumdepth}{-\maxdimen} % remove section numbering (taken from Pandoc default template)

\makeatletter
\def\@maketitle{%
  \newpage

  \begin{center}%
  \let \footnote \thanks
    {\LARGE \@title \par}%
  \end{center}%
  \par
  \vskip 0.1em}
\makeatother

\lhead{}
\chead{%
  $$11$$$$^{th}$$ International Conference on Computational Social Science IC$$^{2}$$S$$^{2}$$\\
  July 21-24, 2025, Norrköping, Sweden%
}
\rhead{}

\graphicspath{{images/}}

\title{$title$}

$if(date)$
\date{$date$}
$else$
\date{\today}
$endif$

\begin{document}

\maketitle
\thispagestyle{fancy}

\begin{center}
\textit{Keywords: $for(keywords)$$keywords$$sep$, $endfor$}
\newline
\end{center}

\section*{Extended Abstract}

$body$

$if(nocite-ids)$
\nocite{$for(nocite-ids)$$it$$sep$, $endfor$}
$endif$

\section*{References}

$if(natbib)$
$if(bibliography)$
$if(biblio-title)$
$if(has-chapters)$
\renewcommand\bibname{$biblio-title$}
$else$
\renewcommand\refname{$biblio-title$}
$endif$
$endif$
\bibliography{$for(bibliography)$$bibliography$$sep$,$endfor$}

$endif$
$endif$
$if(biblatex)$
\printbibliography

$endif$

\end{document}