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+++ b/beamer/slides.tex
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+% ---------------------------
+% HOW TO USE THIS TEMPLATE
+% - Change the metadata
+% - Create slides in the document
+% - Optional : change the other_logo.png with your logo
+% ---------------------------
+
+
+\documentclass[aspectratio=169]{beamer}
+
+\usetheme{default}
+\usepackage{tikz}
+\usepackage{xcolor}
+\usepackage{graphicx}
+\usepackage{xstring}
+\usetikzlibrary{calc}
+
+% --- METADATA ---
+
+\title{TITLE OF THE PRESENTATION}
+\subtitle{SUBTITLE}
+\author{AUTHOR}
+\date{\today}
+
+
+% ---- FONTS ----
+
+\usepackage{helvet}
+\renewcommand{\familydefault}{\sfdefault}
+
+% If the aptos font is installed, uncomment the following line
+% \usepackage{fontspec}
+% \setmainfont{Aptos} 
+
+% ---- PARAMETERS ----
+
+% Color for the margins
+\definecolor{mycyan}{HTML}{0ca3b1}
+
+% Size left margin
+\newlength{\bandwidth}
+\setlength{\bandwidth}{2.5cm}
+
+% Size footnote
+\newlength{\footermargin}
+\setlength{\footermargin}{0.5cm}
+
+% Remove menu
+\setbeamertemplate{navigation symbols}{}
+
+% Remove default title
+\setbeamertemplate{frametitle}{}
+
+% --- Frame number ---
+\setbeamertemplate{footline}{%
+  \leavevmode%
+  \hfill
+  \usebeamerfont{footline}%
+  \begin{beamercolorbox}[wd=2cm,ht=2ex,dp=2ex,right, rightskip=0.3cm]{date in head/foot}
+    \textcolor{white}{\insertframenumber{}}
+  \end{beamercolorbox}%
+  \vskip0pt%
+}
+
+% Shorten title
+\newcommand{\shorttitle}{\StrLeft{\inserttitle}{30}}
+
+
+% --- FIRST SLIDE WITH TITLE ---
+\newcommand{\firstbackground}{
+\setbeamertemplate{background canvas}{
+  \begin{tikzpicture}[remember picture,overlay]
+
+    % Define margin
+    \coordinate (shifted) at ([xshift=\bandwidth]current page.north west);
+     \fill[mycyan] (current page.south west) rectangle (shifted);
+
+    % Logo left
+    \node[anchor=north west] at ([xshift=\bandwidth-0.5cm,yshift=0cm]current page.north west) {
+      \includegraphics[height=2cm]{img/crest_color_logo.png}
+    };
+
+    % Logo right / change with your logo
+    \node[anchor=north east] 
+      at ([xshift=-1cm,yshift=0cm]current page.north east) {
+        \includegraphics[height=2cm]{img/other_logo.png}
+    };
+
+    % Date
+    \node[anchor=south west, font=\sffamily\small]
+      at ([xshift=\bandwidth,yshift=0cm]current page.south west) {\insertdate};
+    
+    
+    % Central bloc
+    \node[
+      draw=white, ultra thin, inner sep=10pt, align=center,
+      font=\sffamily, text width=0.6\paperwidth
+    ] (mainbox) at (current page.center) {
+        {\LARGE \textbf \inserttitle}\\
+        \textcolor{mycyan}{\rule{3cm}{1pt}}\\[0.4cm]
+        {\large \textit \insertsubtitle}\\[0.4cm]
+    };
+  
+
+      % Line right
+    \draw[mycyan, line width=0.3pt]
+    ([xshift=-1cm]current page.north east) -- 
+    ([xshift=-1cm,yshift=-0.333\paperheight]current page.north east);
+    
+    % CREST Title right
+    \node[rotate=90, anchor=south, font=\sffamily\tiny]
+      at ([xshift=-0.8cm,yshift=3cm]current page.south east)
+      {\textcolor{mycyan}{CREST - }\shorttitle};
+  \end{tikzpicture}
+  
+
+}
+}
+
+
+% --- SECOND SLIDE FOR CONTENT ---
+\newcommand{\contentbackground}{
+\setbeamertemplate{background canvas}{
+  
+
+     \begin{tikzpicture}[remember picture,overlay]
+    % --- Footer bar ---
+    \fill[mycyan] (current page.south west) rectangle ([yshift=\footermargin]current page.south east);
+
+    % --- Logo on left side of footer ---
+    \node[
+      anchor=south west,
+      inner sep=0pt,  
+      outer sep=0pt
+    ] at (current page.south west)
+      {\includegraphics[height=\footermargin]{img/crest_white_logo.png}};
+
+    % Line right
+      \draw[mycyan, line width=0.3pt]
+      ([xshift=-1cm]current page.north east) -- 
+      ([xshift=-1cm,yshift=-0.333\paperheight]current page.north east);
+
+     % CREST Title right
+    \node[rotate=90, anchor=south, font=\sffamily\tiny]
+      at ([xshift=-0.8cm,yshift=3cm]current page.south east)
+      {\textcolor{mycyan}{CREST - }\shorttitle};
+
+    % --- Top horizontal line ---
+    \draw[mycyan, line width=0.3pt] 
+      ([xshift=1cm,yshift=-1cm]current page.north west) --
+      ([xshift=13cm,yshift=-1cm]current page.north west);
+
+    % --- Slide title aligned flush with the line start ---
+    \node[
+      anchor=south west,
+      text=mycyan,
+      font=\sffamily\bfseries,
+      inner sep=0pt, % <--- remove padding
+      outer sep=0pt  % <--- avoid extra margins
+    ] at ([xshift=1cm,yshift=-0.9cm]current page.north west) {\insertframetitle};
+      
+  \end{tikzpicture}
+
+}
+}
+
+
+% --- THIRD SLIDE FOR ENDING ---
+\newcommand{\finalbackground}{
+\setbeamertemplate{background canvas}{
+  \begin{tikzpicture}[remember picture,overlay]
+
+    % --- Footer bar ---
+    \fill[mycyan] (current page.south west) rectangle ([yshift=\footermargin]current page.south east);
+
+    % --- Logo on left side of footer ---
+    \node[
+      anchor=south west,
+      inner sep=0pt,
+      outer sep=0pt
+    ] at (current page.south west)
+      {\includegraphics[height=\footermargin]{img/crest_white_logo.png}};
+
+    % --- Vertical line right ---
+    \draw[mycyan, line width=0.3pt]
+      ([xshift=-1cm]current page.north east) --
+      ([xshift=-1cm,yshift=-0.333\paperheight]current page.north east);
+
+    % --- CREST Title right ---
+    \node[rotate=90, anchor=south, font=\sffamily\tiny]
+      at ([xshift=-0.8cm,yshift=3cm]current page.south east)
+      {\textcolor{mycyan}{CREST - }\shorttitle};
+
+    % --- Central content (logos + thank you text) ---
+    \node[anchor=center] at (current page.center) {%
+      \begin{minipage}{1\linewidth}
+        \centering
+        \includegraphics[height=2cm]{img/crest_color_logo.png}\\[0.6cm]
+
+        {\sffamily\bfseries\Large THANK YOU FOR YOUR ATTENTION}\\
+
+      \includegraphics[height=2cm]{img/ipp_logo.png}\\[-0.5cm]
+      \includegraphics[height=0.8cm]{img/cnrs_logo.png}%
+      \includegraphics[height=0.8cm]{img/x_ipp_logo.png}%
+      \includegraphics[height=0.8cm]{img/gee_logo.jpg}%
+      \end{minipage}
+    };
+
+    % --- Address text above footer, bottom-left ---
+    \node[
+      anchor=south west,
+      font=\sffamily\tiny,
+      text=black,
+      inner sep=2pt
+    ] at ([yshift=\footermargin]current page.south west) {%
+      \begin{tabular}{@{}l@{}}
+        Center for Research in Economics and Statistics \\
+        CREST UMR 9194 - 5 avenue Henry Le Chatelier \\
+        91120 Palaiseau
+      \end{tabular}
+    };
+
+
+  \end{tikzpicture}
+}
+}
+
+
+
+\begin{document}
+
+% TITLE SLIDE
+\firstbackground
+\begin{frame}
+\end{frame}
+
+% CONTENT SLIDE
+\contentbackground
+\begin{frame}
+  \frametitle{Your slide title}
+\end{frame}
+
+% CONCLUSION SLIDE
+\finalbackground
+\begin{frame}
+\end{frame}
+
+
+
+\end{document}