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diff --git a/beamerthemeOptics.sty b/beamerthemeOptics.sty
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+% Optics Beamer Theme
+% Author: admin
+% Usage: \usetheme{Optics}
+% Optics Beamer Theme
+% Professional minimal theme which I use for optics presentations
+% Author: admin
+% Usage: \usetheme{Optics}
+
+
+\mode<presentation>
+\usepackage[default]{lato}
+\usepackage[T1]{fontenc}
+
+% Base theme
+\usetheme{default}
+\usecolortheme{default}
+
+% Improved color palette
+\definecolor{primary}{RGB}{20,40,120}      % Darker blue for better contrast
+\definecolor{secondary}{RGB}{95,95,95}     % Professional gray
+\definecolor{accent}{RGB}{0,82,155}        % Accessible blue
+\definecolor{lightgray}{RGB}{248,249,250}  % Very light gray for backgrounds
+
+% Keep original darkblue for compatibility
+\definecolor{darkblue}{RGB}{20,40,120}
+\newcommand{\descr}[1]{{\footnotesize\color{secondary}#1}}
+
+% Remove navigation symbols
+\setbeamertemplate{navigation symbols}{}
+% Captions
+\setbeamerfont{caption}{size=\tiny}
+\setbeamerfont{caption name}{size=\tiny} 
+\setbeamertemplate{caption}{\tiny\color{darkblue}\insertcaptionname~\insertcaptionnumber: \color{black}\insertcaption}
+\setlength{\abovecaptionskip}{-6pt}
+\setlength{\belowcaptionskip}{6pt}
+
+% Clean header with presentation title in dark blue
+\setbeamertemplate{headline}{%
+  \begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1ex]{title in head/foot}%
+    \usebeamerfont{title in head/foot}%
+    \begin{minipage}[c]{0.5\paperwidth}%
+      \color{darkblue}\hspace{1em}\insertsection%
+    \end{minipage}%
+    \begin{minipage}[c]{0.5\paperwidth}%
+      \raggedleft%
+      \ifnum\value{framenumber}>1% Only show author after title page
+        \color{darkblue}%
+        \ifx\insertemail\empty%
+          \insertauthor\hspace{1em}%
+        \else%
+              \href{mailto:\insertemail}{\faEnvelope\ \insertauthor}\hspace{1em}%
+        \fi%
+      \fi%
+    \end{minipage}%
+  \end{beamercolorbox}%
+  \vskip0pt%
+  % \begin{beamercolorbox}[wd=\paperwidth,ht=0.5pt]{primary}%
+  %   \color{darkblue}\hrule height 0.5pt%
+  % \end{beamercolorbox}%
+}
+
+% Custom command for location
+\newcommand{\location}[1]{\def\insertlocation{#1}}
+\location{} % Default empty
+\newcommand{\email}[1]{\def\insertemail{#1}}
+\email{} % Default empty
+
+% Custom title page with location
+\setbeamertemplate{title page}{%
+  \vbox{}
+  \vfill
+  \begingroup
+    \centering
+    \begin{beamercolorbox}[sep=8pt,center]{title}
+      \usebeamerfont{title}\color{darkblue}\bfseries\inserttitle\par%
+      \ifx\insertsubtitle\@empty%
+      \else%
+        \vskip0.25em%
+        {\usebeamerfont{subtitle}\insertsubtitle\par}%
+      \fi%     
+    \end{beamercolorbox}%
+    \vskip1em\par
+    \begin{beamercolorbox}[sep=8pt,center]{author}
+      \usebeamerfont{author}%
+      \ifx\insertemail\empty%
+        \insertauthor%
+      \else%
+            \href{mailto:\insertemail}{\faEnvelope\ \insertauthor}%
+      \fi%
+    \end{beamercolorbox}
+    \begin{beamercolorbox}[sep=8pt,center]{date}
+        \usebeamerfont{date}\textit{\insertdate}
+      \ifx\insertlocation\empty%
+      \else%
+        \par\vskip0.25em%
+        \insertlocation%
+      \fi%
+    \end{beamercolorbox}
+  \endgroup
+  \vfill
+}
+
+% Enhanced footer with title, date, location, and page numbers
+\setbeamertemplate{footline}{%
+  \begin{beamercolorbox}[wd=\paperwidth,ht=0.5pt]{primary}%
+    \color{darkblue}\hrule height 0.5pt%
+  \end{beamercolorbox}%
+  \begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1ex]{title in head/foot}%
+    \usebeamerfont{title in head/foot}%
+    \color{secondary}%
+    \begin{minipage}[c]{0.33\paperwidth}%
+      \hspace{1em}\insertshorttitle%
+    \end{minipage}%
+    \begin{minipage}[c]{0.34\paperwidth}%
+      \centering%
+      \ifx\insertlocation\empty%
+        \insertdate%
+      \else%
+        \insertdate\ $\cdot$ \insertlocation%
+      \fi%
+    \end{minipage}%
+    \begin{minipage}[c]{0.33\paperwidth}%
+      \raggedleft%
+      \insertframenumber{} / \inserttotalframenumber\hspace{1em}%
+    \end{minipage}%
+  \end{beamercolorbox}%
+}
+
+% Frame title with dark blue and underline
+% Fixed positioning for consistency
+\setbeamertemplate{frametitle}{%
+  \nointerlineskip%
+  \begin{beamercolorbox}[wd=\paperwidth,ht=2.2ex,dp=0.8ex,leftskip=1em]{frametitle}%
+    \usebeamerfont{frametitle}\color{darkblue}\bfseries\Large\insertframetitle%
+  \end{beamercolorbox}%
+  \nointerlineskip%
+  \begin{beamercolorbox}[wd=\paperwidth,ht=0.1pt,dp=0pt,leftskip=1em,rightskip=1em]{frametitle}%
+    \color{darkblue}\hrule height 0.8pt%
+  \end{beamercolorbox}%
+    \vspace{-0.8em}%
+}
+
+% List items
+\setbeamertemplate{itemize item}{\raisebox{0.2ex}{\textcolor{accent}{\rule{0.4em}{0.4em}}}\hspace{0.3em}}
+\setbeamertemplate{itemize subitem}{\raisebox{0.2ex}{\textcolor{darkblue}{\textbullet}}\hspace{0.3em}}
+\setbeamertemplate{itemize subsubitem}{\raisebox{0.1ex}{\textcolor{darkblue}{--}}\hspace{0.3em}}
+
+% Improved spacing for readability
+\setlength{\leftmargini}{1.5em}
+\setlength{\leftmarginii}{1.2em}
+\setbeamertemplate{itemize/enumerate body begin}{\vspace{0.5em}}
+\setbeamertemplate{itemize/enumerate body end}{\vspace{0.3em}}
+
+% Add space between items
+\let\olditem\item
+\renewcommand{\item}{\olditem\vspace{0.4em}}
+
+% Table of contents customization
+\setbeamertemplate{section in toc}{\Large\bfseries\color{darkblue}\inserttocsection}
+\setbeamertemplate{section in toc shaded}{\Large\bfseries\color{secondary}\inserttocsection}
+\setbeamertemplate{subsection in toc}{\normalsize\par\hspace{1.2em}$\bullet$~\inserttocsubsection}
+\setbeamertemplate{subsection in toc shaded}{\normalsize\par\hspace{1.2em}\color{secondary}$\bullet$~\inserttocsubsection}
+
+% Color Scheme
+\setbeamercolor{title}{fg=darkblue}
+\setbeamercolor{frametitle}{fg=darkblue,bg=white}
+\setbeamercolor{normal text}{fg=black,bg=white}
+\setbeamercolor{item}{fg=darkblue}
+\setbeamercolor{title in head/foot}{fg=darkblue}
+
+% Bibliography formatting
+\setbeamercolor{bibliography entry author}{fg=darkblue}
+\setbeamercolor{bibliography entry title}{fg=black}
+\setbeamercolor{bibliography entry location}{fg=gray}
+\setbeamercolor{bibliography entry note}{fg=gray}
+\setbeamertemplate{bibliography item}{\insertbiblabel}
+
+\AtBeginSection[ ]
+{
+\begingroup
+\def\insertsection{}
+\begin{frame}{Contents}
+    \tableofcontents[currentsection,hideallsubsections]
+\end{frame}
+\endgroup
+}
+\addtobeamertemplate{frame begin}{%
+  \ifx\insertsubsectionhead\empty%
+  \else%
+    \frametitle{\insertsubsectionhead}%
+  \fi%
+}{}
+\mode<all>