/* Ensure right sidebar (affix) is visible */
.sideaffix {
    display: block !important;
}

/* Improve heading hierarchy indentation in right sidebar */
.affix ul ul {
    padding-left: 10px;
}

.affix ul ul ul {
    padding-left: 20px;
}

.affix ul ul ul ul {
    padding-left: 30px;
}

.affix ul ul ul ul ul {
    padding-left: 40px;
}

.affix ul ul ul ul ul ul {
    padding-left: 50px;
}

/* Ensure Mermaid diagrams are centered */
.mermaid {
    text-align: center;
}

/* Make header background black */
.navbar-inverse {
    background-color: #000000 !important;
    border-color: #000000 !important;
}

/* Update navbar text colors for black background */
.navbar-inverse .navbar-brand,
.navbar-inverse .navbar-nav > li > a {
    color: #ffffff !important;
}

.navbar-inverse .navbar-nav > li > a:hover,
.navbar-inverse .navbar-nav > li > a:focus {
    color: #ffffff !important;
    background-color: #333333 !important;
}

/* Update navbar toggle button for black background */
.navbar-inverse .navbar-toggle {
    border-color: #ffffff !important;
}

.navbar-inverse .navbar-toggle .icon-bar {
    background-color: #ffffff !important;
}