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% Copyright 2020 by Junwei Wang <i.junwei.wang@gmail.com>
%
% This file may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3c
% of this license or (at your option) any later version.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt

\mode<presentation>

%%%%%%%%%%% Nord color scheme
%% https://www.nordtheme.com

% Polar Night
\definecolor{NordDarkBlack}{HTML}{2E3440}     % nord0
\definecolor{NordBlack}{HTML}{3B4252}         % nord1
\definecolor{NordMediumBlack}{HTML}{434C5e}   % nord2
\definecolor{NordBrightBlack}{HTML}{4C566A}   % nord3
% Snow Storm
\definecolor{NordWhite}{HTML}{D8DEE9}         % nord4
\definecolor{NordBrighterWhite}{HTML}{E5E9F0}         % nord5
\definecolor{NordBrightestWhite}{HTML}{ECEFF4}   % nord6
% Frost
\definecolor{NordCyan}{HTML}{8FBCBB}          % nord7
\definecolor{NordBrightCyan}{HTML}{88C0D0}    % nord8
\definecolor{NordBlue}{HTML}{81A1C1}          % nord9
\definecolor{NordBrightBlue}{HTML}{5E81AC}    % nord10
% Aurora
\definecolor{NordRed}{HTML}{BF616A}           % nord11
\definecolor{NordOrange}{HTML}{D08770}        % nord12
\definecolor{NordYellow}{HTML}{EBCB8B}        % nord13
\definecolor{NordGreen}{HTML}{A3BE8C}         % nord14
\definecolor{NordMagenta}{HTML}{B48EAD}       % nord15


%%%%% create alias for colors according to usage
\DeclareOptionBeamer{style}{\def\beamer@nordtheme@style{#1}}
\ExecuteOptionsBeamer{style=dark} % `dark` will be default if nothing is given
\ProcessOptionsBeamer

\def\beamer@nordtheme@styledark{dark}%
\def\beamer@nordtheme@stylelight{light}%


\colorlet{ColorAlertedText}{NordRed}
\colorlet{ColorSubtitle}{NordBlue}
\colorlet{ColorSubsectionInToc}{ColorSubtitle}

\ifx\beamer@nordtheme@style\beamer@nordtheme@styledark%
  \colorlet{ColorBackground}{NordBlack}
  \colorlet{ColorText}{NordWhite}
  \colorlet{ColorExampleText}{NordBrightCyan}
  \colorlet{ColorStructure}{NordCyan}
  \colorlet{ColorTitle}{NordGreen}
  \colorlet{ColorSubsectionInTocShaded}{NordCyan!20!NordBrightBlack}
  \colorlet{ColorItemizeItem}{NordGreen}
  \colorlet{ColorBlockTitleBg}{NordBlack!80}
  \colorlet{ColorExampleBlockTitleBg}{ColorBlockTitleBg}
  \colorlet{ColorAlertedBlockTitleBg}{ColorBlockTitleBg}
  \colorlet{ColorBlockBodyBg}{NordGreen!50!NordBlack}
  \colorlet{ColorExampleBlockBodyBg}{NordBrightCyan!50!NordBlack}
  \colorlet{ColorAlertedBlockBodyBg}{NordRed!50!NordBlack}
  \colorlet{ColorBlockBodyFg}{NordCyan}
  \colorlet{ColorExampleBlockBodyFg}{NordWhite}
  \colorlet{ColorAlertedBlockBodyFg}{NordWhite}
\else%
  \ifx\beamer@nordtheme@style\beamer@nordtheme@stylelight%
    \colorlet{ColorBackground}{NordBrightestWhite}
    \colorlet{ColorText}{NordBrightBlack}
    \colorlet{ColorExampleText}{NordCyan}
    \colorlet{ColorStructure}{NordBrightCyan}
    \colorlet{ColorTitle}{NordBrightBlue}
    \colorlet{ColorSubtitle}{NordBlue}
    \colorlet{ColorSubsectionInTocShaded}{ColorSubsectionInToc!50!ColorBackground}
    \colorlet{ColorItemizeItem}{ColorStructure}
    \colorlet{ColorBlockTitleBg}{NordGreen!50}
    \colorlet{ColorExampleBlockTitleBg}{ColorExampleText!50}
    \colorlet{ColorAlertedBlockTitleBg}{ColorAlertedText!50}
    \colorlet{ColorBlockBodyBg}{NordGreen!20}
    \colorlet{ColorExampleBlockBodyBg}{ColorExampleText!20}
    \colorlet{ColorAlertedBlockBodyBg}{ColorAlertedText!20}
    \colorlet{ColorBlockBodyFg}{ColorText}
    \colorlet{ColorExampleBlockBodyFg}{ColorText}
    \colorlet{ColorAlertedBlockBodyFg}{ColorText}
  \else%
    \PackageError{beamercolorthemeNord}{Unknow style option `\beamer@nordtheme@style`}{extra help}
  \fi%
\fi%


\colorlet{ColorNormalText}{ColorText}
\colorlet{ColorFrameTitle}{ColorTitle}
\colorlet{ColorFrameSubtitle}{ColorSubtitle}
\colorlet{ColorSectionInToc}{ColorTitle}
\colorlet{ColorEnumerateColor}{ColorItemizeItem}
\colorlet{ColorSectionInHeadFoot}{ColorStructure}

%%%%% set beamer color
\setbeamercolor*{background canvas}{bg=ColorBackground}
\setbeamercolor*{normal text}{fg=ColorNormalText}
\setbeamercolor*{alerted text}{fg=ColorAlertedText}
\setbeamercolor*{example text}{fg=ColorExampleText}
\setbeamercolor*{structure}{fg=ColorStructure}

\setbeamercolor*{title}{fg=ColorTitle}
\setbeamercolor*{subtitle}{fg=ColorSubtitle}
\setbeamercolor*{frametitle}{fg=ColorFrameTitle}
\setbeamercolor*{framesubtitle}{fg=ColorFrameSubtitle}
\setbeamercolor*{section in toc}{fg=ColorSectionInToc}
\setbeamercolor*{subsection in toc}{fg=ColorSubsectionInToc}
\setbeamercolor*{subsection in toc shaded}{fg=ColorSubsectionInTocShaded}

\setbeamercolor*{itemize item}{fg=ColorItemizeItem}
\setbeamercolor*{enumerate item}{fg=ColorEnumerateColor}

\setbeamercolor*{section in head/foot}{bg=ColorBackground, fg=ColorSectionInHeadFoot}

\setbeamercolor{block title}{bg=ColorBlockTitleBg,fg=NordGreen}
\setbeamercolor{block title example}{bg=ColorExampleBlockTitleBg,parent={example text}}
\setbeamercolor{block title alerted}{bg=ColorAlertedBlockTitleBg,parent={alerted text}}
\setbeamercolor{block body}{bg=ColorBlockBodyBg,fg=ColorBlockBodyFg}
\setbeamercolor{block body example}{bg=ColorExampleBlockBodyBg,fg=ColorExampleBlockBodyFg}
\setbeamercolor{block body alerted}{bg=ColorAlertedBlockBodyBg,fg=ColorAlertedBlockBodyFg}

\setbeamercolor{caption}{fg=NordBrightBlue}

\mode
<all>

\endinput