.toc {
    font-size: small;
    margin-left: 20px;
    margin-bottom: 20px;
    width: auto;
    float: right;
}

/* TOC heading in bold */
.toc .toctitle {
    font-weight: bold;
}

/* No bullets for toc list, indentation of nested lists 1em */
.toc ul {
    list-style-type: none;
    padding-left: 1rem;
}

/* Top level list has no indentation */
.toc > ul {
    /* no indentation */
    padding-left: 0;
    margin-top: 0;
}

/* Sidebar alignment and scrolling */
aside {
    text-align: left !important;
    position: fixed !important;
    height: 100vh !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
}

aside div {
    text-align: center;
}

aside nav {
    text-align: left !important;
    padding-bottom: 2em;
}

aside nav ul li {
    text-transform: none !important;
    display: block !important;
    line-height: 1.4em !important;
    font-size: 1.0em !important;
}

/* Chapter navigation styles */
.chapter-header {
    margin-top: 0.4em;
    margin-bottom: 0.2em;
    position: relative;
}

.chapter-toggle {
    display: inline-block;
    cursor: pointer;
    width: 20px;
    margin-right: 4px;
    user-select: none;
}

.chapter-toggle:hover {
    opacity: 0.7;
}

.chapter-icon {
    font-size: 0.75em;
    transition: transform 0.2s ease;
}

.chapter-header > a {
    font-weight: bold;
    font-size: 1em;
}

.chapter-pages {
    list-style-type: none;
    padding-left: 50px;
    margin-top: 0.1em;
    margin-bottom: 0.2em;
    transition: all 0.3s ease;
}

.chapter-page {
    padding-left: 1.8em;
    margin-top: 0.1em;
    margin-bottom: 0.1em;
}

.chapter-page a {
    font-size: 0.88em;
    line-height: 1.3em;
}