\documentclass[xcolor=svgnames,xcolor=table,aspectratio=1610]{beamer}  % 1610, 169, 149, 54, 43, 32

\usepackage[
	backend=biber,
	style=authoryear,
	citestyle=authoryear,
	sorting=ynt
]{biblatex}
\addbibresource{references.bib}

\makeatletter
\newdimen\beamer@miniframeradius
\beamer@miniframeradius=0.05cm
\define@key{beamer@margin}{mini frame radius}{\beamer@miniframeradius=#1\relax}
\setbeamertemplate{mini frame}{
  \begin{pgfpicture}{0pt}{0pt}{2\beamer@miniframeradius}{2\beamer@miniframeradius}
    \pgfpathcircle{\pgfpoint{\beamer@miniframeradius}{\beamer@miniframeradius}}{\beamer@miniframeradius}
    \pgfusepath{fill,stroke}
\end{pgfpicture}}
\setbeamertemplate{mini frame in current subsection}{
  \begin{pgfpicture}{0pt}{0pt}{2\beamer@miniframeradius}{2\beamer@miniframeradius}
    \pgfpathcircle{\pgfpoint{\beamer@miniframeradius}{\beamer@miniframeradius}}{\beamer@miniframeradius}
    \pgfusepath{stroke}
\end{pgfpicture}}
\makeatother

\usepackage[thinlines]{easytable}
\usepackage{tikz,ulem}
\usepackage[absolute,overlay]{textpos}
\usepackage{tcolorbox}
\usepackage{multicol}

\makeatletter
\newcommand*\mini{\@setfontsize\mysize{6.8}{8.0}}\makeatother
\newcommand\compact{\fontsize{6.6}{7.5}\selectfont}
\newcommand\micro{\fontsize{5.1}{7.3}\selectfont}
\newcommand\nano{\fontsize{4.5}{6.5}\selectfont}
\newcommand\pico{\fontsize{2.9}{6.0}\selectfont}

\usetheme{Boadilla}
\useoutertheme[subsection=false]{smoothbars}
\usefonttheme{serif}
\usecolortheme{seagull} % dove fly seagull
\useinnertheme{rounded}
\usepackage{pifont}
\usepackage{time}       % date and time
\usepackage{url}
\usepackage{graphicx}
\usepackage[T1]{fontenc}    % european characters
\usepackage{amssymb,amsmath}  % use mathematical symbols
\usepackage{palatino}      % use palatino as the default font
\usepackage{adjustbox}
\newsavebox\listingboxname
\usepackage{multirow}
\setbeamercovered{invisible} % transparent, invisible
\setbeamertemplate{itemize subitem}[triangle]
\setbeamertemplate{navigation symbols}{}
\setbeamersize{mini frame radius=.04cm, mini frame size=.12cm} % navigation circles size and separation
\setbeamertemplate{enumerate items}[default] % nice numbers without circles in enumerate
\usepackage{array}
\usepackage{hyperref}

\setbeamertemplate{itemize item}{
  \begin{tikzpicture}
    \shade[ball color=yellow!50!white, preaction={fill=black,
        opacity=.25,transform canvas={xshift=1mm,yshift=-1mm, yscale=0.5}}] (0,0) circle (0.6ex);
  \end{tikzpicture}
}
\setbeamertemplate{itemize subitem}{
  \begin{tikzpicture}
    \shade[ball color=orange!50!white, preaction={fill=black,
        opacity=.25,transform canvas={xshift=1mm,yshift=-1mm, yscale=0.5}}] (0,0) circle (0.4ex);
  \end{tikzpicture}
}

% dark slides
\setbeamercolor{normal text}{fg=white,bg=black!80}
\setbeamercolor{structure}{fg=white}
\setbeamercolor{alerted text}{fg=red!85!black}
\setbeamercolor{item projected}{use=item,fg=black,bg=item.fg!35}
\setbeamercolor*{palette primary}{use=structure,fg=structure.fg}
\setbeamercolor*{palette secondary}{use=structure,fg=structure.fg!95!black}
\setbeamercolor*{palette tertiary}{use=structure,fg=structure.fg!90!black}
\setbeamercolor*{palette quaternary}{use=structure,fg=structure.fg!95!black,bg=black!80}
\setbeamercolor*{framesubtitle}{fg=white}

\setbeamercolor*{block title}{parent=structure,bg=black!60}
\setbeamercolor*{block body}{fg=white,bg=black!85}
\addtobeamertemplate{block begin}{\setlength{\textwidth}{0.99\textwidth}}{} % width

\setbeamertemplate{caption}[numbered]

\setbeamercolor*{block title alerted}{parent=alerted text,bg=black!15}
\setbeamercolor*{block title example}{parent=example text,bg=black!15}

\let\oldblock\block
\let\endoldblock\endblock
\renewenvironment{block}[1]{\begin{oldblock}{#1}\vspace{-3mm}}{\vspace{-3mm}\end{oldblock}}

\newcommand{\code}[1]{\tc{yellow}{\texttt{\,\,\lstinline{#1}}\,\,}}
\newcommand{\tc}{\textcolor}
\newcommand{\select}{$\leadsto~$}
\newcommand{\fb}{\framebox}
\def\ra{$\rightarrow$\,\,}
\def\Ra{~~$\Rightarrow$\,\,~~}
\def\lsim{~\raise0.3ex\hbox{$<$}\kern-0.75em{\lower0.65ex\hbox{$\sim$}}~}
\newcommand{\hi}[1]{{\color{cadet}\textsl{#1}}}
\newcommand{\chacha}[1]{\centering{\scalebox{2}{\fontsize{12pt}{0pt}\normalfont{#1}}}}
\newcommand{\chapter}[1]{\begin{frame}{}\chacha{#1}\end{frame}}
\newcommand{\chapterDouble}[2]{\begin{frame}{}\chacha{#1}\\\medskip\chacha{#2}\end{frame}}
\newcommand{\then}{\mathbin{\rotatebox[origin=c]{270}{$\Rightarrow$}}}
\usepackage{mathtools}
\usepackage{xcolor}
\usepackage{verbatim}
\usepackage{listings}
\usepackage{keystroke}
\newcommand{\yes}{\tc{SeaGreen}{\Large\ding{52}}}
\newcommand{\no}{\tc{red}{\Large\ding{56}}}
\newcommand{\yellow}[1]{\color{yellow}{#1}}
\newcommand{\amber}[1]{\color{amber}{#1}}

\lstdefinelanguage{JavaScript}{
  keywords={typeof, new, true, false, catch, function, return, null, catch, switch, var, if, in, while, do, else, case, break},
  keywordstyle=\color{blue}\bfseries,
  ndkeywords={class, export, boolean, throw, implements, import, this},
  ndkeywordstyle=\color{darkgray}\bfseries,
  identifierstyle=\color{white},
  sensitive=false,
  comment=[l]{//},
  morecomment=[s]{/*}{*/},
  commentstyle=\color{ashgrey}\ttfamily,
  stringstyle=\color{amber}\ttfamily,
  morestring=[b]',
  morestring=[b]"
}

\newtcolorbox{mysidebyside}[1][]{
    notitle, sidebyside,
    sidebyside align=center seam,
    halign=center,
    lefthand width=.35\textwidth,
    #1
}

\newenvironment<>{varblock}[2][\textwidth]{
  \setlength{\textwidth}{#1}
  \begin{actionenv}#3
    \def\insertblocktitle{#2}
    \par
    \usebeamertemplate{block begin}}
  {\par
    \usebeamertemplate{block end}
  \end{actionenv}}

\renewcommand{\arraystretch}{1.5} % cell height in tables

\begin{document}

\title[FOOTER]{TITLE}
\author[AUTHOR(S)]{
  {\large\sc TITLE-SLIDE-TITLE}%\\{\small email}\vspace{10mm}
}
\date[YYYY-MM-DD]{}
\institute[SCHOOL]{
  \includegraphics[width=0.40\columnwidth]{featured-image.png}\qquad\qquad
%  \includegraphics[width=0.40\columnwidth]{alliance.png}
}

% Title Slide
\begin{frame}
  \vspace{-3mm}
  \titlepage
\end{frame}

% Chris
\begin{frame}{Table of Contents}
\tableofcontents
\end{frame}

\section{SECTION 1 TITLE} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{frame}
\frametitle{FRAME 1 TITLE}
	\begin{itemize}
		\item \loremipsum
		\item This is talked about in more detail in \cite{Example_2026}
	\end{itemize}
\end{frame}

\begin{frame}
\frametitle{FRAME 2 TITLE}
\begin{minipage}{0.5\textwidth}
	\begin{itemize}
		\item Split frame, column 1
		\item \loremipsum
	\end{itemize}
\end{minipage}%
\begin{minipage}{0.5\textwidth}
	\begin{itemize}
		\item Frame split in 2, column 2
	\end{itemize}
\end{minipage}
\end{frame}

\section{References} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}[t,allowframebreaks]
\frametitle{Bibliography}
\printbibliography[heading=none]
\end{frame}

\end{document}