\documentclass[a4paper, 12pt]{book}

% General packages
\usepackage[utf8]{inputenc}
\usepackage{blindtext}
\usepackage{graphicx}
\usepackage{pgfplotstable}
\usepackage{booktabs}
\usepackage{filecontents}
\usepackage{longtable}
\usepackage{float}
\usepackage[T1]{fontenc}
\usepackage{tocloft}
\usepackage{tex4ebook}
\usepackage{chemformula}
\usepackage{booktabs}
\usepackage{makecell}

\renewcommand\theadfont{\bfseries}

\definecolor{codeblue}{RGB}{69, 161, 248}
\definecolor{codegray}{RGB}{40, 40, 40}
\usetikzlibrary{shapes,arrows}
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    text width=4.5em, text badly centered, node distance=3cm, inner sep=0pt]
\tikzstyle{block} = [rectangle, draw, fill=codeblue,  text=white,
    text width=5em, text centered, rounded corners, minimum height=4em]
\tikzstyle{line} = [draw, -latex']

% Fonts for accessibility
\ifdefined\isaccessible
    \usepackage{helvet}
    \renewcommand{\familydefault}{\sfdefault}
\fi

% Kerning in footnotes
\usepackage{fnpct}

% References
\usepackage[backend=biber]{biblatex}
\addbibresource{references.bib}

% Clickable links in the table of contents
\usepackage[hidelinks]{hyperref}
\hypersetup{
    linktoc=all
    allcolors=black
}

% Folders where to search for images
\graphicspath{
  {images/}
  {troubleshooting/}
  {sourdough-starter/}
  {troubleshooting/crumb-structures/}
  {history/}
  {images/external/}
  {baking/}
  {wheat-sourdough/}
  {wheat-sourdough/shaping/}
  {non-wheat-sourdough/}
}

% Layout rules
\interfootnotelinepenalty=10000
\advance\cftsecnumwidth 0.5em\relax
\advance\cftsubsecindent 0.5em\relax
\advance\cftsubsecnumwidth 0.5em\relax

% Space between paragraphs
\usepackage[skip=5pt plus1pt, indent=0pt]{parskip}

% Caption and figure size below images
\usepackage{caption}
\captionsetup[figure]{font=footnotesize}

% Basic attributes
\author{Hendrik Kleinwächter}
\title{The Sourdough Framework}

\begin{document}

% Title page
\begin{titlepage}
\begin{center}
  \includegraphics[width=\textwidth]{images/cover-page.jpg}
  Version:
  \today
\end{center}
\end{titlepage}

\frontmatter

\tableofcontents

\chapter{Foreword}
\input{intro/foreword}

\chapter{Preface}
\input{intro/preface}

\chapter{Acknowledgements}
\input{intro/acknowledgements}


\mainmatter

\chapter{The history of sourdough}
\input{history/sourdough-history}

\chapter{How sourdough works}
\input{basics/how-sourdough-works}

\chapter{Making a sourdough starter}
\input{sourdough-starter/sourdough-starter}

\chapter{Sourdough starter types}
\input{sourdough-starter/sourdough-starter-types}

\chapter{Flour types}
\input{flour-types/flour-types}

\chapter{Bread types}
\input{bread-types/bread-types}

\chapter{Wheat sourdough}%
\label{chapter:wheat-sourdough}
\input{wheat-sourdough/wheat-sourdough}

\chapter{Non wheat sourdough}%
\label{chapter:non-wheat-sourdough}
\input{non-wheat-sourdough/non-wheat-sourdough}

\chapter{Baking}%
\label{chapter:baking}
\input{baking/baking}

\chapter{Storing bread}%
\label{chapter:storing-bread}
\input{storing-bread/storing-bread}

\chapter{Troubleshooting}
\input{troubleshooting/crumb-structures/crumb-structures}
\input{troubleshooting/misc}

\printbibliography


\end{document}