% Margins
\usepackage[inner=25mm, outer=25mm, top=35mm, bottom=30mm]{geometry}
%\usepackage[inner=35mm, outer=20mm, top=25mm, bottom=30mm]{geometry}% If printing

% Set line spacing to 1.15
\usepackage{setspace}
\linespread{1.15}

% Typography
\usepackage{iftex}
\ifluatex
\usepackage{libertinus-otf}
\else
\usepackage{mathtools}% Math improvements
\usepackage{libertinus}% Libertinus font for text and math
\usepackage[T1]{fontenc}% Use T1 font encoding
\usepackage{textcomp}% Additional symbols
\usepackage[varqu, varl]{inconsolata}% Better monospace font (with alternative "quote" [varqu] and "l" [varl])
%\usepackage{libertinust1math}% Libertinus math font
\fi

\usepackage[main=english,french]{babel}% Typographical rules
\usepackage{microtype}% Micro-typography improvements (slightly more compact, better to read)

% Fonts: Use sans-serif for sections
\usepackage{titlesec}
\titleformat{\part}[display]{\normalfont\Huge\sffamily\bfseries\centering}{\partname\ \thepart}{20pt}{}
\titleformat{\chapter}[display]{\normalfont\Huge\sffamily\bfseries}{\chaptertitlename\ \thechapter}{10pt}{}
\titleformat{\section}{\normalfont\Large\sffamily\bfseries}{\thesection}{1em}{}
\titleformat{\subsection}{\normalfont\large\sffamily\bfseries}{\thesubsection}{1em}{}
\titleformat{\subsubsection}{\normalfont\normalsize\sffamily\bfseries}{\thesubsubsection}{1em}{}
\titleformat{\paragraph}[runin]{\normalfont\normalsize\sffamily\bfseries}{\theparagraph}{1em}{}

% Parts, chapters and sections
\NewCommandCopy{\oldchapter}{\chapter}
\RenewDocumentCommand{\chapter}{s o m}{% #1 = star, #2 = short title, #3 = title
  \IfBooleanTF{#1}{%
    \oldchapter*{#3}% Starred chapter
    \addcontentsline{toc}{chapter}{#3}% Add to the table of contents
  }{%
    \IfValueTF{#2}{%
      \oldchapter[#2]{#3}% Chapter with short title
    }{%
      \oldchapter{#3}% Regular chapter
    }%
    \addcontentsline{lof}{chapter}{\thechapter.\ #3}% Add to the list of figures
    \addcontentsline{lot}{chapter}{\thechapter.\ #3}% Add to the list of tables
  }%
}

\newcommand{\importchapter}[2]{% Load a chapter (#2) in a path (#1)
  \glsresetall% Reset the acronyms
  \graphicspath{{#1/figures/}}% Enable relative paths for images

  \cleardoublepage% Start on a right page
  \includefrom{#1}{#2}% Include with relative paths \input in the chapter
}

\setcounter{secnumdepth}{3}% Number subsubsections

% Headers
\usepackage{emptypage}% Remove headers and footers on empty pages
\usepackage{etoolbox}% Patching commands
\usepackage{fancyhdr}% Headers and footers

\pagestyle{fancy}% Use fancy headers and footers
\fancyhf{}% Clear headers and footers
\fancyhead[LO, RE]{}
\fancyfoot[C]{\thepage}% Page number in the center of the footer

\appto\mainmatter{
  \renewcommand{\chaptermark}[1]{\markboth{\chaptername~\thechapter~--\ #1}{}}% Chapter formatting
  \renewcommand{\sectionmark}[1]{\markright{\thesection\ #1}}% Section formatting
  \fancyhead[LO]{\small\nouppercase{\leftmark}}% Chapter in the left on odd pages
  \fancyhead[RE]{\small\nouppercase{\rightmark}}% Section in the right on even pages
}

\setlength{\headheight}{14pt}