% Clean Thesis - Minimalist Academic Style
% Based on "Clean Thesis" LaTeX style
% http://cleanthesis.der-ric.de/

\documentclass[12pt]{scrbook}

% Packages
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath,amssymb}
\usepackage{graphicx}
\usepackage{hyperref}
\usepackage{geometry}
\usepackage{microtype}
\usepackage{xcolor}
\usepackage{booktabs}
\usepackage{setspace}
\usepackage[osf]{mathpazo}

% Clean gray color scheme
\definecolor{ctColorMain}{RGB}{0,0,0}
\definecolor{ctColorSec}{RGB}{80,80,80}
\definecolor{ctColorLight}{RGB}{180,180,180}

% Geometry - comfortable reading
\geometry{
  paperwidth=6in,
  paperheight=9in,
  textwidth=4.5in,
  textheight=7in,
  inner=0.75in,
  outer=0.75in,
  top=1in,
  bottom=1in,
}

% Hyperref
\hypersetup{
  colorlinks=true,
  linkcolor=ctColorSec,
  citecolor=ctColorSec,
  urlcolor=ctColorSec,
}

% Fonts - clean
\usepackage[T1]{url}

% Chapter heading
\usepackage{titlesec}
\titleformat{\chapter}[display]
  {\normalfont\Large\bfseries\color{ctColorMain}}
  {\chaptertitlename\ \thechapter}
  {20pt}
  {\Large\bfseries\color{ctColorMain}}

\titleformat{\section}
  {\normalfont\large\bfseries\color{ctColorSec}}
  {\thesection}
  {12pt}
  {\normalfont\large\bfseries\color{ctColorSec}}

% Headers
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE]{\thepage\quad\textcolor{ctColorSec}{\leftmark}}
\fancyhead[RO]{\textcolor{ctColorSec}{\rightmark}\quad\thepage}

% Spacing
\onehalfspacing

% Metadata
\def\booktitle{$book_title$}
\def\bookauthor{$author$}
\def\bookdate{$date$}

\begin{document}

% Title page
\thispagestyle{empty}
\begin{center}
\vspace*{2in}
{\Huge\bfseries\booktitle\par}
\vspace{1in}
{\large by \bookauthor\par}
\vfill
{\large\bookdate}
\end{center}

% Copyright
\clearpage
\thispagestyle{empty}
\vspace*{\fill}
\begin{center}
\textcolor{ctColorLight}{Copyright \textcopyright\ \bookdate\ \bookauthor}\\
\textcolor{ctColorLight}{All rights reserved.}
\end{center}
\vspace*{\fill}

% Contents
\clearpage
\tableofcontents

% Main
\mainmatter

$body$

\end{document}