% ac-paper-layout.sty — Aesthetic Computer paper layout master template
% Usage: \usepackage{ac-paper-layout} in each arxiv-* paper
%
% This package provides the shared visual identity for all AC working drafts:
%   - AC color palette
%   - YWFT Processing font commands (\acbold, \aclight)
%   - Draft watermark in Processing Light font
%   - Pals logo watermark (top-left, rotated, semi-opaque)
%   - Section/subsection formatting
%   - Header/footer (draft notice + page numbers)
%   - List and paragraph settings
%   - \ac command for "Aesthetic Computer" small caps
%
% Papers still define their own:
%   - \hypersetup{pdftitle=...}
%   - \graphicspath{...}
%   - Additional \newcommand macros (e.g. \wg, \acos)
%   - Extra packages (listings, multicol, etc.)
%   - Extra font families (ComicRelief for KidLisp, etc.)

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{ac-paper-layout}[2026/03/16 Aesthetic Computer paper layout]

% === FONTS ===
% Requires fontspec (loaded by the document before this package)
\newfontfamily\acbold{ywft-processing-bold}[
  Path=../../system/public/type/webfonts/,
  Extension=.ttf
]
\newfontfamily\aclight{ywft-processing-light}[
  Path=../../system/public/type/webfonts/,
  Extension=.ttf
]

% === COLORS (AC palette) ===
\definecolor{acpink}{RGB}{180,72,135}
\definecolor{acpurple}{RGB}{120,80,180}
\definecolor{acdark}{RGB}{64,56,74}
\definecolor{acgray}{RGB}{119,119,119}
\definecolor{draftcolor}{RGB}{180,72,135}

% === DRAFT WATERMARK (Processing font + pals logo) ===
\RequirePackage{eso-pic}
\RequirePackage{tikz}
\AddToShipoutPictureBG{%
  \begin{tikzpicture}[remember picture, overlay]
    % --- Pals logo: large, top-left, rotated, semi-opaque, bleeding off edge ---
    \node[opacity=0.06, anchor=north west, rotate=-15]
      at ([xshift=-1.2cm, yshift=1.2cm]current page.north west)
      {\includegraphics[width=10cm]{pals}};
    % --- "WORKING DRAFT" text in Processing Light font ---
    \node[opacity=0.12, rotate=45, anchor=center]
      at (current page.center)
      {{\aclight\fontsize{2.5cm}{3cm}\selectfont\color{acpink} WORKING DRAFT}};
  \end{tikzpicture}%
}

% === SECTION FORMATTING ===
\RequirePackage{titlesec}
\titleformat{\section}
  {\normalfont\bfseries\normalsize\uppercase}
  {\thesection.}
  {0.5em}
  {}
\titlespacing{\section}{0pt}{1.2em}{0.3em}

\titleformat{\subsection}
  {\normalfont\bfseries\small}
  {\thesubsection}
  {0.5em}
  {}
\titlespacing{\subsection}{0pt}{0.8em}{0.2em}

% === HEADER/FOOTER ===
\RequirePackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\renewcommand{\headrulewidth}{0pt}
\fancyhead[C]{\footnotesize\color{acpink}\textit{Working Draft --- not for citation}}
\fancyfoot[C]{\footnotesize\thepage}

% === LIST SETTINGS ===
\RequirePackage{enumitem}
\setlist[itemize]{nosep, leftmargin=1.2em, itemsep=0.1em}
\setlist[enumerate]{nosep, leftmargin=1.2em}

% === PARAGRAPH SETTINGS ===
\setlength{\columnsep}{1.8em}
\setlength{\parindent}{1em}
\setlength{\parskip}{0.3em}

% === HYPERREF COLORS ===
\RequirePackage{hyperref}
\hypersetup{
  colorlinks=true,
  linkcolor=acpurple,
  urlcolor=acpurple,
  citecolor=acpurple,
}

% === COMMON COMMANDS ===
\newcommand{\ac}{\textsc{Aesthetic Computer}}
\newcommand{\acdot}{{\color{acpink}.}}

\endinput