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% beamerouterthemecsh.sty - CSH Outer Theme
% Complexity Science Hub Vienna
%
% Copyright (c) 2025 Complexity Science Hub Vienna
% This work may be distributed under the terms of the LPPL 1.3c.
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\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{beamerouterthemecsh}[2025/11/24 v1.0 CSH Beamer Outer Theme]

\mode<presentation>

% frame title
\defbeamertemplate*{frametitle}{csh}[1][]{%
\vskip1cm%
  \begin{beamercolorbox}[wd=\paperwidth,ht=0.7cm]{frametitle}
    \begin{tikzpicture}
      \useasboundingbox (0,0) rectangle(0.625*\the\paperwidth, 1.2);
      \fill[white] (0,0) rectangle(0.625*\the\paperwidth, 1.2);
      \ifx\insertframesubtitle\@empty%
        {\node[anchor=west,font=\large] at (0.5,0.61)%
          {\Large\bfseries\insertframetitle};}
      \else%
        {\node[anchor=west,font=\large] at (0.5,0.81)%
          {\Large\bfseries\insertframetitle};%
         \node[anchor=west,font=\small] at (0.5,0.21)%
          {\insertframesubtitle};}%
      \fi
    \end{tikzpicture}
  \end{beamercolorbox}
}

\mode<all>