.figures-app { padding: 2rem 0 4rem; }

.figures-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2.5rem;
    align-items: start;
}

.figures-sidebar {
    position: sticky;
    top: 1.5rem;
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
    padding-right: 0.5rem;
}

.figures-search { margin-bottom: 1rem; }

.figures-part-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-bottom: 1.25rem;
}
.figures-part-filter .pill {
    border: 1px solid var(--bs-border-color, #dee2e6);
    background: #fff;
    border-radius: 999px;
    padding: 0.1rem 0.6rem;
    font-size: 0.78rem;
    color: #0A2540;
    cursor: pointer;
    line-height: 1.6;
}
.figures-part-filter .pill[aria-pressed="true"] {
    background: #0A2540;
    border-color: #0A2540;
    color: #fff;
}

.figures-toc { font-size: 0.92rem; }
.figures-toc .part-group { margin-bottom: 0.75rem; }
.figures-toc .part-title {
    font-family: 'Instrument Serif', serif;
    font-size: 1.02rem;
    font-weight: 500;
    color: #0A2540;
    margin: 0 0 0.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.figures-toc .part-title .caret {
    font-size: 0.7rem;
    transition: transform 0.15s;
}
.figures-toc .part-group.collapsed .caret { transform: rotate(-90deg); }
.figures-toc .part-group.collapsed .chapter-list { display: none; }
.figures-toc .chapter-list { list-style: none; padding: 0 0 0 0.85rem; margin: 0; }
.figures-toc .chapter-list li {
    padding: 0.18rem 0;
    color: #4a5568;
    cursor: pointer;
    line-height: 1.35;
}
.figures-toc .chapter-list li .count {
    color: #94a3b8;
    font-size: 0.78rem;
    margin-left: 0.25rem;
}
.figures-toc .chapter-list li:hover { color: #009688; }
.figures-toc .chapter-list li.active {
    color: #0A2540;
    font-weight: 600;
}
.figures-toc .chapter-list li.dim { opacity: 0.4; }
.figures-toc .part-group.dim .part-title { opacity: 0.55; }

.figures-main { min-width: 0; }
.figures-main .chapter-header { margin-bottom: 1.5rem; }
.figures-main .chapter-header h2 {
    font-family: 'Instrument Serif', serif;
    color: #0A2540;
    margin-bottom: 0.4rem;
}
.figures-main .chapter-header .chapter-subtitle {
    font-style: italic;
    color: #5a6478;
    margin: 0;
}

.figure-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1.25rem 1.25rem 1.5rem;
    margin-bottom: 1.75rem;
    transition: box-shadow 0.2s, border-color 0.2s;
}
.figure-card:hover { box-shadow: 0 4px 16px rgba(10,37,64,0.07); }
.figure-card.highlight {
    border-color: #009688;
    box-shadow: 0 0 0 3px rgba(0,150,136,0.18);
}
.figure-card .figure-meta {
    font-size: 0.78rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.15rem;
}
.figure-card .figure-title {
    font-family: 'Instrument Serif', serif;
    font-size: 1.35rem;
    color: #0A2540;
    margin: 0 0 0.85rem;
}
.figure-card .figure-image {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 4px;
    cursor: zoom-in;
    background: #f1f3f6;
}
.figure-card .figure-caption {
    font-style: italic;
    color: #4a5568;
    line-height: 1.55;
    margin: 0.9rem 0 0;
}
.figure-card mark {
    background: #fef3c7;
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
}
.figure-card .search-breadcrumb {
    font-size: 0.78rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

#figure-lightbox .modal-body { padding: 1rem; }
#figure-lightbox img { max-height: 80vh; width: auto; }

.figures-mobile-toolbar { display: none; }

@media (max-width: 991.98px) {
    .figures-layout { grid-template-columns: 1fr; gap: 1rem; }
    .figures-sidebar {
        position: static;
        max-height: none;
        padding-right: 0;
    }
    .figures-toc { display: none; }
    .figures-mobile-toolbar { display: block; margin-bottom: 1rem; }
    .figures-mobile-toolbar select.form-select { width: 100%; }
}