%%% File: nordwind.sty
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{nordwind}[2026/09/21 Nordwind AG corporate identity]

% What a company writes, and the only file of a company that carries a value.
%
% It carries the name of the company and nothing else: a document of this company
% writes `\usepackage{nordwind}` and has the identity and the template of the
% family in one line. Its letter class and its presentation theme load the same
% file with `plain`, which gives them the identity and the logo without the
% page of a document.
%
% Nordwind AG is the example of the suite: a company that does not exist, with a
% palette of three colours so that the two layers are visible. A company copies
% this file, replaces the values, and calls it after itself.
%
% The NAME of the file is the name of the company, and it has to be free: TeX
% Live ships a package called `example`, and a document that wrote
% `\usepackage{example}` got that one instead of this company — measured on
% 2026-09-21 with a probe that reported the page of the article class and never
% said that it had loaded somebody else's package.

\RequirePackage{business-identity}

% ===================
% The palette
% ===================
% Layer one, and the only place in a company with a colour value. The names are
% the ones the brand gives its colours; nothing outside this block writes a
% colour.
\definecolor{nordwind-deep}{HTML}{14425C}
\definecolor{nordwind-sea}{HTML}{3E8EA8}
\definecolor{nordwind-sand}{HTML}{C97B2A}

% ===================
% The roles
% ===================
% Layer two: what a colour is FOR. Every template of the company reads these and
% never the palette above, so a brand that changes a value changes it here and
% nowhere else. A role takes a palette entry or a mixture of two, which is what
% a brand with three colours needs to build the quiet scale it never declared.
\businesscolours{
  brand = nordwind-deep,
  text = black,
  title = nordwind-deep,
  titlemeta = nordwind-deep!60,
  running-strong = nordwind-deep,
  running-quiet = nordwind-deep!55,
  folio = nordwind-deep!55,
  caption = nordwind-deep!70,
  rowrule = nordwind-deep!25,
  heading-bg = nordwind-deep,
  heading-fg = white,
  border = nordwind-sea,
  thick-border = nordwind-deep,
  black-border = black,
}

% ===================
% The faces
% ===================
% fontspec is called by the company, because it is code and not a value: this one
% takes three families every TeX installation carries, so the example builds
% anywhere. A real company names its own files or its own package here.
\setmainfont{TeX Gyre Pagella}
\setsansfont{TeX Gyre Heros}
\setmonofont{TeX Gyre Cursor}[Scale=MatchLowercase]
% The letter head of `g-brief2` asks for small capitals, and where the face has
% none LaTeX substitutes silently and writes "Font shape undefined" into every
% build log. The substitution is raised to a rule here, so the page is the same
% and the log is quiet. A company whose face really has small capitals leaves
% this out.
\businessfonts{
  default = rm,
  symbols = DejaVu Sans,
  smallcaps = false,
}

% ===================
% The logo
% ===================
% The company draws its icon, so it hands the suite a command instead of a file:
% a drawing takes parameters that no file name can carry. The command takes a
% height and leaves a box of exactly that height. A company whose logo IS a file
% writes `icon = nordwind-icon` instead, without an extension.
%
% `\pgfresetboundingbox` with an explicit bounding box is what makes the box
% keep its proportions: `\resizebox` otherwise compensates for the line width,
% and the same drawing comes out at two different widths at two heights. The
% address line is set to the WIDTH of this box, so everything under the logo
% hangs on it.
%
% The compass needle is cut OUT of the disc and not drawn on it: the same
% drawing then stands on the paper and on the brand-coloured bar of a deck, and
% it carries exactly one colour — the one the caller asked for, which reaches
% the drawing as `\businesslogocolour`.
\RequirePackage{tikz}
\newcommand{\nordwindicon}[1]{%
  \resizebox{!}{#1}{%
    \begin{tikzpicture}[x=1cm,y=1cm]
      \fill[\businesslogocolour, even odd rule]
        (0,0) circle (0.5)
        (0,0.34) -- (0.13,-0.06) -- (0,-0.02) -- (-0.13,-0.06) -- cycle
        (0,-0.34) -- (0.13,0.06) -- (0,0.02) -- (-0.13,0.06) -- cycle;
      \pgfresetboundingbox
      \path[use as bounding box] (-0.5,-0.5) rectangle (0.5,0.5);
    \end{tikzpicture}}}

\businessidentity{
  name = Nordwind,
  url = https://nordwind.example,
  address = https://nordwind.example,
  lockup = icon+text,
  icon code = \nordwindicon,
}

% ===================
% The template of the family
% ===================
% Everything a document of this company gets beyond its identity. Whatever the
% document wrote at `\usepackage` reaches the template: `plain` for a letter
% class or a presentation theme, which then take the identity and the logo and
% none of the page.
\DeclareOption*{\PassOptionsToPackage{\CurrentOption}{business-suite}}
\ProcessOptions\relax
\RequirePackage{business-suite}

\endinput