/* Book specific CSS to match site design */
.book-content {
    font-family: var(--font-body);
}

.book-content h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: normal;
    margin-block-end: var(--spacing-md);
    border-bottom: 1px solid var(--color-sandstone-light);
    padding-bottom: var(--spacing-xs);
}

.book-content h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-top: var(--spacing-lg);
    border-bottom: 1px solid var(--color-sandstone-light);
    padding-bottom: var(--spacing-xs);
}

.book-content .chapter-subtitle {
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--color-copper);
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.book-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    text-indent: 0;
}

.book-content code {
    font-family: var(--font-code);
    background-color: var(--color-sandstone-light);
    padding: 2px 4px;
    font-size: 0.9em;
}

.book-content .hard-ending {
    margin-block: var(--spacing-lg);
    padding: var(--spacing-md);
    border-left: 2px solid var(--color-copper);
    background: transparent;
    font-family: var(--font-body);
    font-style: italic;
}

.book-content .box {
    background-color: transparent;
    border: 1px solid var(--color-sandstone-light);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-family: var(--font-body);
}

.book-content .box-metric {
    border-left: 4px solid var(--color-indigo);
    font-family: var(--font-code);
}

.book-content .box-label {
    font-family: var(--font-code);
    font-weight: bold;
    display: block;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    font-size: 0.85rem;
    color: var(--color-copper);
}

.book-content .footer-nav {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-sandstone-light);
    display: flex;
    justify-content: space-between;
    font-family: var(--font-code);
}

.book-content .term {
    border-bottom: 1px dotted var(--color-indigo);
    cursor: help;
}

.book-content .faq-section {
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--color-sandstone-light);
    padding-top: var(--spacing-md);
}

.book-content .faq-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.book-content details.faq-item {
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--color-sandstone-light);
    background: transparent;
}

.book-content details.faq-item summary {
    padding: var(--spacing-sm);
    cursor: pointer;
    font-family: var(--font-code);
    background: transparent;
    border-bottom: 1px solid transparent;
}

.book-content details.faq-item[open] summary {
    border-bottom: 1px solid var(--color-sandstone-light);
}

.book-content details.faq-item .faq-content {
    padding: var(--spacing-md);
}

/* Sidebar styling for JS injected sidebar */
.toc-sidebar .logo-area {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--color-sandstone-light);
}

.toc-sidebar .logo-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    display: block;
    color: var(--color-ink);
    text-decoration: none;
}

.toc-sidebar .logo-subtitle {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--color-copper);
    display: block;
}

.toc-sidebar .nav-group {
    margin-bottom: var(--spacing-sm);
}

.toc-sidebar .nav-header {
    font-family: var(--font-code);
    font-weight: bold;
    color: var(--color-sandstone);
    margin-bottom: 4px;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.toc-sidebar .nav-link {
    display: block;
    padding: 2px 0;
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-ink);
}

.toc-sidebar .nav-link:hover {
    color: var(--color-copper);
}

.toc-sidebar .nav-link.active {
    font-weight: bold;
    color: var(--color-copper);
}

/* Simulator Canvas embeds */
.sim-embed {
    width: 100%;
    margin-block: var(--spacing-xl);
    padding: var(--spacing-md);
    border: none;
    background-color: transparent;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M 15,15 L 40,15 L 40,5 L 60,5 L 60,15 L 85,15 L 85,40 L 95,40 L 95,60 L 85,60 L 85,85 L 60,85 L 60,95 L 40,95 L 40,85 L 15,85 L 15,60 L 5,60 L 5,40 L 15,40 Z" stroke="%23b0693a" stroke-width="1.5" fill="none" vector-effect="non-scaling-stroke"/></svg>');
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
}
#go-up-btn { display: none !important; }