\documentclass[12pt, oneside]{article}

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%%                               Load Packages                               %%
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\usepackage[
  top=2.5cm,
  bottom=2.5cm,
  left=4cm,
  right=2.5cm,
  headheight=22pt,
  centering
]{geometry}
\geometry{a4paper}

\usepackage[utf8]{inputenc} %% use UTF-8, maybe not needed since 2018
\usepackage[english,main=italian]{babel} %% language

\pagestyle{headings}

\usepackage{scrlayer-scrpage}
\usepackage{csquotes} %% correct language also for citations

\ifoot[]{}
\cfoot[]{}
\ofoot[\pagemark]{\pagemark}
\pagestyle{scrplain}

\usepackage[
  backend=biber,
  style=numeric,
  sorting=ynt
]{biblatex} %% for citations
\addbibresource{tesi.bib}

\usepackage{import} %% specify path for import

%% math packages
\usepackage{graphicx} %% for pictures
\usepackage{float}
\usepackage{amssymb} %% math symbols
\usepackage{amsmath} %% math matrix etc
\usepackage{listings} %% code block
\usepackage{tabularray} %% better tables
\usepackage{booktabs} %% rules for tables
\usepackage{mathrsfs}
\usepackage{mathtools}
\usepackage{algorithm} %% for algorithms
\usepackage{algpseudocode} %% loads algorithmicx
\usepackage{amsthm}
\usepackage{thmtools} %% theorems

%% plot packages
\usepackage{pgfplots} %% plots used with \begin{tikzpicture}
\usepackage{tikz} %% for pictures
\usetikzlibrary{trees}
\pgfplotsset{width=10cm,compat=newest}

%% design packages
\usepackage{enumitem} %% for lists and enumerating
\usepackage{color}
\usepackage{xcolor,colortbl} % xcolor for defining colors, colortbl for table colors
\usepackage{makecell} %% for multiple lines in cell of table
\usepackage{cancel}
\usepackage{pgfornament} %% ornaments

%% load last
\usepackage[hidelinks]{hyperref} %% links for table of contents, load last
\usepackage{bookmark} %% for better table of contents


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%%                       Configuration of the packages                       %%
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\linespread{1.5}
\raggedbottom %% spaces if page is empty % chktex 1

%% set max table of contents recursion to subsection (3->subsubsecition)
\setcounter{tocdepth}{3}
\setcounter{secnumdepth}{3}

%% use bar instead of arrow for vectors
\renewcommand{\vec}[1]{\bar{#1}}
%% easy norm
\newcommand{\norm}[1]{\left\lvert#1\right\rvert}

%% itemize use less vertical space (use olditemize for default behaviour)
\let\olditemize=\itemize%% old itemize
\let\endolditemize=\enditemize%% old end itemize
\renewenvironment{itemize}{\olditemize\itemsep-0.2em}{\endolditemize}

%% items in itemize emph+box
%% usage: \ieb{Class:} for simple item
%%        \ieb[4cm]{Class:} for specific size of box
\newcommand{\ieb}[2][2cm]{
        \makebox[#1][l]{\emph{#2}}
} %% TODO: replace with description environment (? maybe)

% less vertical space around align & align*
\newcommand{\zerodisplayskips}{
  \setlength{\abovedisplayskip}{0pt}
  \setlength{\belowdisplayskip}{0pt}
  \setlength{\abovedisplayshortskip}{0pt}
  \setlength{\belowdisplayshortskip}{0pt}
}

% make dotfill use all the space available
\renewcommand{\dotfill}{
  \leavevmode\cleaders\hbox to 1.00em{\hss .\hss }\hfill\kern0pt } % chktex 1 chktex 26

\setlength{\fboxsep}{-\fboxrule} % for debugging


%% PACKAGE algorithm
\floatname{algorithm}{Algoritmo}


%% PACKAGE tabularray
\UseTblrLibrary{amsmath}


%% PACKAGE color
\definecolor{red}{rgb}{1, 0.1, 0.1}
\definecolor{lightgreen}{rgb}{0.55, 0.87, 0.47}
\definecolor{gray}{rgb}{0.3, 0.3, 0.3}
\newcommand{\lgt}{\cellcolor{lightgreen}} %% light green in tables
\newcommand{\gry}{\textcolor{gray}} %% gray text


%% PACKAGE minipage
\newcommand{\thend}[1]{\begin{center}
  \begin{minipage}[c][1em][c]{#1}
    \dotfill{}
  \end{minipage}
\end{center}}


%% PACKAGE thmtools
\declaretheoremstyle[
 headfont=\normalfont\bfseries,
 notefont=\mdseries,
 bodyfont=\normalfont,
 qed=\qedsymbol % chktex 1
]{steo}
\declaretheorem[numbered=no, style=steo]{teorema}
% \declaretheorem[thmbox=S]{teorema}

\declaretheoremstyle[
  headfont=\normalfont\bfseries,
  notefont=\mdseries,
  bodyfont=\normalfont,
]{sdef}
\declaretheorem[numbered=no, style=sdef]{definizione}

\declaretheoremstyle[
  spaceabove=-6pt,
  spacebelow=6pt,
  headfont=\normalfont\bfseries,
  bodyfont=\normalfont,
  postheadspace=1em,
  qed=$\blacksquare$,
  headpunct={:}
]{sprf}
\declaretheorem[name={Dimostrazione}, style=sprf, numbered=no]{dimostrazione}

%% PACKAGE
\lstset{
  language=C,
  showspaces=false,
  basicstyle=\small\ttfamily,
  numbers=left,
  numberstyle=\tiny,
  breaklines=true,
  postbreak=\mbox{\textcolor{red}{$\hookrightarrow$}\space},
  backgroundcolor = \color{lightgray},
}


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\title{Tesi}
\author{
  Elvis Rossi
  Matricola 561394
}
\date{\today}

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\begin{document}
\pagenumbering{roman}
\input{titlepage.ltx}

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\newpage
\null % chktex 1
\thispagestyle{empty}
\vspace*{\fill}
\begin{center}
  \color{black!30}\pgfornament[width=2cm]{123}
\end{center}
\newpage

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\tableofcontents
\newpage

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\pagenumbering{arabic}
\setcounter{page}{1}
% \newgeometry{top=2.5cm,
%   bottom=2.5cm,
%   left=2.5cm,
%   right=4cm,
%   headheight=22pt,
%   centering} %% flip the inner and outer pages because we reset page counter
%              %% and the last page was odd
\input{introduzione.ltx}

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\input{definizioni.ltx}

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\input{applicazioni.ltx}

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\input{conclusioni.ltx}

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\printbibliography{}

\end{document}

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