/* ── Override Materialize container to use full width ── */
.container {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 24px;
}

/* ── Loading overlay ── */
#loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #fff;
    transition: opacity .3s;
}
#loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ── Header ── */
.header-section {
    padding: 20px 0 4px;
}
.main-title {
    margin: 8px 0 6px;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
}

/* ── Authors ── */
.authors-block {
    font-size: 0.95rem;
    color: #333;
    line-height: 1.8;
}
.author-link {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dashed #999;
    transition: color .15s, border-color .15s;
}
.author-link:hover {
    color: #00796b;
    border-color: #00796b;
}
.affiliations-block {
    font-size: 0.85rem;
    color: #616161;
    margin-top: 2px;
}

/* ── Header action buttons ── */
.header-actions {
    margin-top: 12px;
    margin-bottom: 8px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.action-group-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
.action-separator {
    margin-left: 12px;
}
.header-actions .btn-small {
    height: 28px;
    line-height: 28px;
    padding: 0 12px;
    font-size: 0.78rem;
    text-transform: none;
    border-radius: 4px;
}

/* ── Acknowledgments ── */
.acks-block {
    text-align: center;
    color: #616161;
    font-size: 0.82rem;
    line-height: 1.5;
    padding: 0 8px;
}
.acks-block p {
    margin: 6px 0 12px;
}

/* ── Mini navigation ── */
.mini-nav {
    display: flex;
    justify-content: center;
    gap: 4px;
    padding: 8px 0;
    position: sticky;
    top: 0;
    z-index: 900;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 8px;
}
.mini-nav-link {
    padding: 6px 20px;
    font-size: 0.92rem;
    font-weight: 600;
    color: #555;
    border-radius: 16px;
    text-decoration: none;
    transition: background .15s, color .15s;
}
.mini-nav-link:hover {
    background: #e0f2f1;
    color: #00796b;
}
.mini-nav-link.active {
    background: #00796b;
    color: #fff;
}

/* ── Filter bar ── */
.filter-bar {
    margin: 8px 0 12px;
    padding: 10px 12px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
}
.filter-bar-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.stats-group {
    margin-left: auto;
    gap: 6px;
    flex-wrap: wrap;
}
.filter-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: #444;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

/* Year slider */
.year-filter-group {
    flex: 1;
    min-width: 200px;
    max-width: 360px;
}
.year-slider {
    flex: 1;
    margin: 0 4px;
}
.year-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: #00796b;
    min-width: 32px;
    text-align: center;
}
/* noUiSlider teal theme */
.noUi-connect {
    background: #26a69a !important;
}
.noUi-horizontal {
    height: 6px !important;
}
.noUi-horizontal .noUi-handle {
    width: 18px !important;
    height: 18px !important;
    top: -7px !important;
    right: -9px !important;
    border-radius: 50% !important;
    background: #00796b !important;
    border: 2px solid #fff !important;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2) !important;
    cursor: pointer;
}
.noUi-horizontal .noUi-handle::before,
.noUi-horizontal .noUi-handle::after {
    display: none !important;
}

/* Corpus toggle button group */
.btn-group {
    display: inline-flex;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid #b2dfdb;
}
.corpus-btn {
    background-color: #fff !important;
    color: #00796b !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    border-right: 1px solid #b2dfdb;
    height: 30px;
    line-height: 30px;
    padding: 0 14px;
    font-size: 0.8rem;
    text-transform: none;
}
.corpus-btn:last-child {
    border-right: none;
}
.corpus-btn:hover {
    background-color: #e0f2f1 !important;
}
.corpus-btn.active {
    background-color: #00796b !important;
    color: #fff !important;
}

/* Stats chips */
.stat-chip {
    font-size: 0.82rem;
    height: 28px;
    line-height: 28px;
    border-radius: 14px;
    padding: 0 12px;
}
.stat-total {
    background-color: #e0e0e0 !important;
    color: #333 !important;
}
.stat-journals {
    background-color: #bbdefb !important;
    color: #0d47a1 !important;
}
.stat-conferences {
    background-color: #c8e6c9 !important;
    color: #1b5e20 !important;
}
.stat-arxiv {
    background-color: #ffcdd2 !important;
    color: #b71c1c !important;
}
.stat-chip b {
    font-weight: 700;
}

/* ── Cards ── */
.card {
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    margin-bottom: 12px;
}
.card-title-sm {
    font-size: clamp(1rem, 1.6vw, 1.3rem) !important;
    font-weight: 700 !important;
    color: #00897b;
}

/* ── Chart containers ── */
.chart-container {
    position: relative;
    height: 280px;
    width: 100%;
}
.chart-container-lg {
    position: relative;
    height: 520px;
    width: 100%;
}

/* ── Rows: tighten gap between chart rows ── */
.row {
    margin-bottom: 0;
}
.row .col {
    padding: 0 8px;
}

/* ── Table toolbar ── */
.table-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}
.table-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    flex-wrap: wrap;
}
.toolbar-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: #555;
}
.toolbar-select {
    height: 30px !important;
    font-size: 0.82rem !important;
    padding: 0 8px !important;
    border: 1px solid #ccc !important;
    border-radius: 4px !important;
    background-color: #fff !important;
    width: auto !important;
    min-width: 60px;
}

/* Abstract search input */
.abstract-search-input {
    height: 28px !important;
    font-size: 0.82rem !important;
    padding: 0 10px !important;
    border: 1px solid #ccc !important;
    border-radius: 4px !important;
    background: #fff !important;
    width: 160px !important;
    margin: 0 !important;
    box-sizing: border-box;
}
.abstract-search-input:focus {
    border-color: #00796b !important;
    box-shadow: none !important;
}

/* Column visibility dropdown */
.col-vis-wrap {
    position: relative;
    display: inline-block;
}
.col-vis-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 1000;
    min-width: 200px;
    max-height: 320px;
    overflow-y: auto;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    padding: 6px 0;
    margin-top: 2px;
}
.col-vis-dropdown.active {
    display: block;
}
.col-vis-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    font-size: 0.78rem;
    color: #333;
    cursor: pointer;
    white-space: nowrap;
}
.col-vis-item:hover {
    background: #f5f5f5;
}
.col-vis-item input[type="checkbox"] {
    opacity: 1 !important;
    position: static !important;
    pointer-events: auto !important;
    width: 14px !important;
    height: 14px !important;
    margin: 0 !important;
    flex-shrink: 0;
    -webkit-appearance: checkbox !important;
    appearance: checkbox !important;
}
.col-vis-item input[type="checkbox"] + span::before,
.col-vis-item input[type="checkbox"] + span::after,
.col-vis-item input[type="checkbox"]:checked + span::before,
.col-vis-item input[type="checkbox"]:checked + span::after {
    display: none !important;
    content: none !important;
}

/* ── DataTable overrides ── */
.dataTables_wrapper {
    width: 100% !important;
    overflow-x: auto;
}
.dataTables_wrapper .dataTables_filter input {
    background-color: #fff;
    border-radius: 4px;
    border: 1px solid #ccc;
    padding: 4px 8px;
    font-size: 0.85rem;
}
#tabla {
    width: max-content !important;
    min-width: 100%;
}
#tabla td {
    font-size: 0.88rem;
    padding: 8px 10px;
    line-height: 1.5;
    color: #333;
    vertical-align: middle;
}
#tabla thead th {
    font-size: 0.82rem;
    font-weight: 600;
    padding: 8px 18px 8px 10px;
    white-space: nowrap;
    color: #00695c;
    border-bottom: 2px solid #b2dfdb;
    position: relative;
}
#tabla.filters-visible thead th {
    padding-bottom: 26px;
}
#tabla tfoot th {
    padding: 5px 6px;
    border-top: 1px solid #e0e0e0;
}
#tabla tbody tr:hover {
    background-color: #f5f5f5;
}
/* Title column */
#tabla td.dt-title {
    white-space: normal;
    min-width: 280px;
    max-width: 400px;
    line-height: 1.4;
    position: relative;
}

/* ── Table chips ── */
.table-chip {
    display: inline-block;
    padding: 2px 8px;
    margin: 2px 2px;
    font-size: 0.75rem;
    border-radius: 10px;
    white-space: nowrap;
    line-height: 1.7;
    font-weight: 500;
}

/* Chip overflow: show max 2, then "..." toggle */
.chip-wrap {
    display: inline;
}
.chip-wrap .chip-extra {
    display: none;
}
.chip-wrap.expanded .chip-extra {
    display: inline;
}
.chip-wrap.expanded .chip-more {
    display: none;
}
.chip-more {
    display: inline-block;
    padding: 2px 8px;
    margin: 2px 2px;
    font-size: 0.75rem;
    border-radius: 10px;
    white-space: nowrap;
    line-height: 1.7;
    font-weight: 600;
    background: #e0e0e0;
    color: #555;
    cursor: pointer;
}

/* ── Green buttons (table cells) ── */
.green-btn {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    color: #fff;
    background: #26a69a;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    transition: background .15s;
    white-space: nowrap;
}
.green-btn:hover {
    background: #00897b;
    color: #fff;
}

/* ── Citation modal ── */
#citation-content {
    white-space: pre-wrap;
    font-size: 0.9rem;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    color: #333;
    line-height: 1.5;
    padding: 12px;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* ── Back to top button ── */
#backToTop {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 800;
    display: none;
    width: 44px;
    height: 44px;
    line-height: 44px;
    text-align: center;
    font-size: 1.1rem;
    opacity: 0.85;
    transition: opacity .2s;
}
#backToTop:hover {
    opacity: 1;
}

/* ── Footer ── */
.page-footer-custom {
    margin-top: 24px;
    padding: 16px 24px;
    background: #e0f2f1;
    border-top: 1px solid #b2dfdb;
}
.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-left {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.footer-title {
    font-weight: 600;
    font-size: 0.88rem;
    color: #00695c;
}
.footer-copy {
    font-size: 0.78rem;
    color: #616161;
}
.footer-links {
    display: flex;
    gap: 16px;
}
.footer-links a {
    font-size: 0.82rem;
    color: #00796b;
    text-decoration: none;
    font-weight: 500;
}
.footer-links a:hover {
    text-decoration: underline;
}

/* ── Related papers list (in modal) ── */
.related-papers-list {
    margin: 6px 0 0;
    padding: 0;
    list-style: none;
}
.related-papers-list li {
    padding: 4px 0;
    font-size: 0.88rem;
    border-bottom: 1px solid #eee;
}
.related-papers-list li:last-child {
    border-bottom: none;
}
.related-papers-list .related-chip {
    display: inline-block;
    padding: 1px 6px;
    font-size: 0.7rem;
    border-radius: 8px;
    background: #e0f2f1;
    color: #00695c;
    margin-left: 6px;
}

/* ── Venue chart legend (responsive) ── */
.venue-legend {
    min-width: 130px;
    max-height: 500px;
    overflow-y: auto;
    padding-left: 10px;
    flex-shrink: 0;
}

/* ── Responsive ── */
@media only screen and (max-width: 992px) {
    .container {
        padding: 0 16px;
    }
    .main-title {
        font-size: 1.25rem;
    }
    .stats-group {
        margin-left: 0;
    }
    .year-filter-group {
        max-width: 300px;
    }
    .venue-legend {
        min-width: 100px;
        font-size: 9px;
    }
}

@media only screen and (max-width: 600px) {
    .container {
        padding: 0 10px;
    }
    .main-title {
        font-size: 1.1rem;
    }
    .authors-block {
        font-size: 0.85rem;
    }
    .affiliations-block {
        font-size: 0.78rem;
    }
    .header-actions {
        gap: 4px;
    }
    .header-actions .btn-small {
        padding: 0 8px;
        font-size: 0.72rem;
    }
    .action-separator {
        margin-left: 4px;
    }
    .filter-bar-row {
        gap: 10px;
    }
    .filter-group {
        width: 100%;
        justify-content: center;
    }
    .year-filter-group {
        max-width: 100%;
    }
    .stats-group {
        justify-content: center;
    }
    .corpus-btn {
        padding: 0 10px;
        font-size: 0.75rem;
    }
    .chart-container {
        height: 220px;
    }
    .chart-container-lg {
        height: 400px;
    }
    .venue-legend {
        display: none;
    }
    .mini-nav {
        gap: 2px;
    }
    .mini-nav-link {
        padding: 5px 12px;
        font-size: 0.82rem;
    }
    .abstract-search-input {
        width: 120px !important;
    }
}

/* ── Column filter dropdowns (Excel-style) ── */
.col-filter-wrap {
    position: absolute;
    bottom: 4px;
    left: 10px;
    right: 10px;
    text-align: left;
    display: none;
}
#tabla.filters-visible .col-filter-wrap {
    display: block;
}
.col-filter-btn {
    display: inline-block;
    cursor: pointer;
    font-size: 0.6rem;
    color: #999;
    padding: 1px 4px;
    user-select: none;
    transition: color 0.15s;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 3px;
    line-height: 1;
}
.col-filter-btn:hover {
    color: #00796b;
    border-color: #00796b;
}
.col-filter-btn.col-filter-active {
    color: #fff;
    background: #00796b;
    border-color: #00796b;
}
.col-filter-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    min-width: 180px;
    max-width: 260px;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    padding: 6px 0;
    margin-top: 2px;
}
.col-filter-dropdown.active {
    display: block;
}
.col-filter-controls {
    display: flex;
    gap: 8px;
    padding: 4px 10px 6px;
    border-bottom: 1px solid #eee;
}
.col-filter-action {
    font-size: 0.78rem;
    color: #00796b;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}
.col-filter-action:hover {
    text-decoration: underline;
}
.col-filter-search {
    display: block;
    width: calc(100% - 20px);
    margin: 4px 10px;
    padding: 4px 8px;
    font-size: 0.78rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    outline: none;
    box-sizing: border-box;
    height: auto !important;
}
.col-filter-search:focus {
    border-color: #00796b;
}
.col-filter-list {
    max-height: 220px;
    overflow-y: auto;
    padding: 4px 0;
}
.col-filter-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    font-size: 0.78rem;
    color: #333;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.col-filter-item:hover {
    background: #f5f5f5;
}
.col-filter-item input[type="checkbox"] {
    opacity: 1 !important;
    position: static !important;
    pointer-events: auto !important;
    width: 14px !important;
    height: 14px !important;
    margin: 0 !important;
    flex-shrink: 0;
    -webkit-appearance: checkbox !important;
    appearance: checkbox !important;
}
.col-filter-item input[type="checkbox"] + span::before,
.col-filter-item input[type="checkbox"] + span::after,
.col-filter-item input[type="checkbox"]:checked + span::before,
.col-filter-item input[type="checkbox"]:checked + span::after {
    display: none !important;
    content: none !important;
}
.col-filter-item span {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Filter badge (active count on Filters button) ── */
.filter-badge {
    display: inline-block;
    background: #fff;
    color: #00796b;
    font-size: 0.65rem;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    border-radius: 8px;
    margin-left: 4px;
    vertical-align: middle;
}

/* ── BibTeX cell buttons ── */
.bib-btn-group {
    display: inline-flex;
    gap: 4px;
}

/* ========================================
   DARK MODE
   ======================================== */
body.dark-mode {
    background: #1a1a2e !important;
    color: #e0e0e0 !important;
}
body.dark-mode .container {
    color: #e0e0e0;
}
body.dark-mode .main-title {
    color: #4db6ac !important;
}
body.dark-mode .authors-block {
    color: #ccc;
}
body.dark-mode .author-link {
    color: #b2dfdb;
    border-bottom-color: #666;
}
body.dark-mode .author-link:hover {
    color: #4db6ac;
}
body.dark-mode .affiliations-block,
body.dark-mode .acks-block {
    color: #aaa;
}
body.dark-mode .divider {
    background-color: #333 !important;
}
body.dark-mode .mini-nav {
    background: #1a1a2e;
    border-bottom-color: #333;
}
body.dark-mode .mini-nav-link {
    color: #aaa;
}
body.dark-mode .mini-nav-link:hover {
    background: #2a2a4a;
    color: #4db6ac;
}
body.dark-mode .mini-nav-link.active {
    background: #00796b;
    color: #fff;
}
body.dark-mode .filter-bar {
    background: #16213e;
    border-color: #333;
}
body.dark-mode .filter-label {
    color: #aaa;
}
body.dark-mode .corpus-btn {
    background-color: #16213e !important;
    color: #4db6ac !important;
    border-color: #444;
}
body.dark-mode .corpus-btn:hover {
    background-color: #2a2a4a !important;
}
body.dark-mode .corpus-btn.active {
    background-color: #00796b !important;
    color: #fff !important;
}
body.dark-mode .btn-group {
    border-color: #444;
}
body.dark-mode .stat-total {
    background-color: #333 !important;
    color: #ddd !important;
}
body.dark-mode .stat-journals {
    background-color: #1a3a5c !important;
    color: #90caf9 !important;
}
body.dark-mode .stat-conferences {
    background-color: #1b3a1b !important;
    color: #a5d6a7 !important;
}
body.dark-mode .stat-arxiv {
    background-color: #3a1b1b !important;
    color: #ef9a9a !important;
}
body.dark-mode .card {
    background-color: #16213e !important;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
body.dark-mode .card-title-sm {
    color: #4db6ac !important;
}
body.dark-mode #tabla td {
    color: #ddd;
}
body.dark-mode #tabla thead th {
    color: #4db6ac;
    border-bottom-color: #444;
}
body.dark-mode #tabla tbody tr:hover {
    background-color: #2a2a4a !important;
}
body.dark-mode #tabla tbody tr {
    background-color: #16213e;
}
body.dark-mode #tabla tbody tr:nth-child(odd) {
    background-color: #1a1a3a;
}
body.dark-mode .dataTables_wrapper .dataTables_filter input {
    background-color: #2a2a4a;
    color: #ddd;
    border-color: #444;
}
body.dark-mode .dataTables_wrapper .dataTables_info,
body.dark-mode .dataTables_wrapper .dataTables_paginate .paginate_button {
    color: #aaa !important;
}
body.dark-mode .green-btn {
    background: #00796b;
}
body.dark-mode .green-btn:hover {
    background: #4db6ac;
}
body.dark-mode .toolbar-select {
    background-color: #2a2a4a !important;
    color: #ddd !important;
    border-color: #444 !important;
}
body.dark-mode .abstract-search-input {
    background: #2a2a4a !important;
    color: #ddd !important;
    border-color: #444 !important;
}
body.dark-mode .col-filter-dropdown,
body.dark-mode .col-vis-dropdown {
    background: #16213e;
    border-color: #444;
}
body.dark-mode .col-filter-item,
body.dark-mode .col-vis-item {
    color: #ddd;
}
body.dark-mode .col-filter-item:hover,
body.dark-mode .col-vis-item:hover {
    background: #2a2a4a;
}
body.dark-mode .col-filter-btn {
    background: #2a2a4a;
    border-color: #444;
    color: #999;
}
body.dark-mode .col-filter-search {
    background: #2a2a4a;
    color: #ddd;
    border-color: #444;
}
body.dark-mode .modal {
    background-color: #16213e !important;
    color: #ddd !important;
}
body.dark-mode .modal h4,
body.dark-mode .modal h5,
body.dark-mode .modal h6 {
    color: #ddd !important;
}
body.dark-mode .modal .modal-footer {
    background-color: #1a1a3a !important;
    border-top-color: #333 !important;
}
body.dark-mode .modal .btn-flat {
    color: #4db6ac !important;
}
body.dark-mode #modal-bibtex-content,
body.dark-mode #citation-content {
    background: #1a1a3a;
    color: #ddd;
    border-color: #444;
}
body.dark-mode .page-footer-custom {
    background: #16213e;
    border-top-color: #333;
}
body.dark-mode .footer-title {
    color: #4db6ac;
}
body.dark-mode .footer-copy {
    color: #999;
}
body.dark-mode .footer-links a {
    color: #4db6ac;
}
body.dark-mode .noUi-target {
    background: #333 !important;
}
body.dark-mode .year-label {
    color: #4db6ac;
}
body.dark-mode #loading-overlay {
    background: #1a1a2e;
}
body.dark-mode #loading-overlay p {
    color: #4db6ac;
}
body.dark-mode .venue-legend div {
    color: #ddd !important;
}
body.dark-mode .action-group-label {
    color: #aaa;
}
body.dark-mode .toolbar-label {
    color: #aaa;
}
body.dark-mode .summary-item {
    background: #1a1a3a;
    border-color: #333;
}
body.dark-mode .summary-value {
    color: #4db6ac;
}
body.dark-mode .summary-label {
    color: #aaa;
}
body.dark-mode .acks-toggle-link {
    color: #4db6ac;
}
body.dark-mode .chart-download-btn {
    color: #aaa;
    border-color: #444;
}
body.dark-mode .chart-download-btn:hover {
    background: #2a2a4a;
    color: #4db6ac;
}
body.dark-mode .chart-dl-menu {
    background: #16213e;
    border-color: #444;
}
body.dark-mode .chart-dl-menu a {
    color: #ddd;
}
body.dark-mode .chart-dl-menu a:hover {
    background: #2a2a4a;
    color: #4db6ac;
}
body.dark-mode .wc-word {
    color: #4db6ac;
}

/* ── Collapsible acknowledgments ── */
.acks-toggle-link {
    font-size: 0.8rem;
    color: #00796b;
    text-decoration: none;
    font-weight: 500;
}
.acks-toggle-link:hover {
    text-decoration: underline;
}
.acks-content {
    transition: max-height .3s ease;
}

/* ── Summary statistics card ── */
.summary-card-content {
    padding: 12px 20px !important;
}
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
    margin-top: 10px;
}
.summary-item {
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 10px 14px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70px;
}
.summary-value {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    color: #00796b;
    line-height: 1.3;
    word-break: break-word;
}
.summary-label {
    display: block;
    font-size: 0.72rem;
    color: #777;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-top: 2px;
}

/* ── Chart header with download button ── */
.chart-header-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.chart-download-btn {
    background: none;
    border: 1px solid #ccc;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px 8px;
    color: #555;
    transition: background .15s, color .15s;
    line-height: 1;
}
.chart-download-btn:hover {
    background: #e0f2f1;
    color: #00796b;
}
.chart-dl-wrap {
    position: relative;
    display: inline-block;
}
.chart-dl-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 100;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    margin-top: 2px;
    min-width: 60px;
}
.chart-dl-menu.active {
    display: block;
}
.chart-dl-menu a {
    display: block;
    padding: 5px 12px;
    font-size: 0.78rem;
    color: #333;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}
.chart-dl-menu a:hover {
    background: #e0f2f1;
    color: #00796b;
}

/* ── Word cloud (HTML-based) ── */
#grafica-html .wc-word {
    display: inline-block;
    padding: 2px 4px;
    cursor: default;
    transition: transform .1s;
}
#grafica-html .wc-word:hover {
    transform: scale(1.1);
}

/* ── Author network (HTML-based) ── */
.coauthor-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}
.coauthor-table th {
    text-align: left;
    padding: 6px 10px;
    border-bottom: 2px solid #b2dfdb;
    color: #00695c;
    font-weight: 600;
}
.coauthor-table td {
    padding: 5px 10px;
    border-bottom: 1px solid #eee;
}
.coauthor-bar {
    display: inline-block;
    height: 14px;
    background: #26a69a;
    border-radius: 3px;
    vertical-align: middle;
    margin-right: 6px;
}

/* ── Theme toggle switch (fixed top-right) ── */
.theme-switch {
    position: fixed;
    top: 10px;
    right: 16px;
    z-index: 950;
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    user-select: none;
}
.theme-switch-icon {
    font-size: 0.95rem;
    line-height: 1;
    color: #555;
}
.theme-switch input {
    display: none;
}
.theme-switch-slider {
    position: relative;
    width: 36px;
    height: 20px;
    background: #b2dfdb;
    border-radius: 10px;
    transition: background .25s;
}
.theme-switch-slider::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    transition: transform .25s;
}
.theme-switch input:checked + .theme-switch-slider {
    background: #4db6ac;
}
.theme-switch input:checked + .theme-switch-slider::after {
    transform: translateX(16px);
}
body.dark-mode .theme-switch-icon {
    color: #aaa;
}

/* ── Skip navigation (accessibility) ── */
.skip-nav {
    position: absolute;
    top: -100px;
    left: 10px;
    z-index: 10000;
    background: #00796b;
    color: #fff;
    padding: 8px 16px;
    border-radius: 0 0 4px 4px;
    font-size: 0.85rem;
    text-decoration: none;
    transition: top .2s;
}
.skip-nav:focus {
    top: 0;
    color: #fff;
}

/* ── Card collapse ── */
.card-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.card-title-row .chart-header-row,
.card-title-row .table-toolbar,
.card-title-row .row {
    flex: 1;
}
.card-collapse-btn {
    background: none;
    border: 1px solid #ccc;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    padding: 2px 8px;
    color: #777;
    transition: transform .2s, color .15s;
    flex-shrink: 0;
    line-height: 1;
}
.card-collapse-btn:hover {
    color: #00796b;
    border-color: #00796b;
}
.card-collapse-btn.collapsed {
    transform: rotate(180deg);
}
.card-collapsible {
    overflow: visible;
    transition: opacity .25s ease;
    opacity: 1;
}
.card-collapsible.collapsed {
    display: none;
    opacity: 0;
}
body.dark-mode .card-collapse-btn {
    color: #aaa;
    border-color: #444;
}
body.dark-mode .card-collapse-btn:hover {
    color: #4db6ac;
    border-color: #4db6ac;
}

/* ── Active filter chips ── */
.active-filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 0;
}
.active-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    font-size: 0.75rem;
    border-radius: 12px;
    background: #e0f2f1;
    color: #00695c;
    font-weight: 500;
    cursor: default;
}
.active-filter-chip .chip-remove {
    cursor: pointer;
    font-weight: 700;
    font-size: 0.85rem;
    line-height: 1;
    opacity: 0.6;
    transition: opacity .15s;
}
.active-filter-chip .chip-remove:hover {
    opacity: 1;
}
body.dark-mode .active-filter-chip {
    background: #2a2a4a;
    color: #4db6ac;
}

/* ── Tooltip abstract preview ── */
.title-tooltip {
    display: none;
    position: absolute;
    z-index: 500;
    bottom: 100%;
    left: 0;
    width: 320px;
    max-height: 120px;
    overflow: hidden;
    padding: 8px 12px;
    font-size: 0.78rem;
    line-height: 1.45;
    color: #333;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    pointer-events: none;
}
#tabla td.dt-title:hover .title-tooltip {
    display: block;
}
body.dark-mode .title-tooltip {
    background: #16213e;
    color: #ddd;
    border-color: #444;
}

/* ── Search highlighting ── */
.search-highlight {
    background: #fff59d;
    color: #333;
    border-radius: 2px;
    padding: 0 1px;
}
body.dark-mode .search-highlight {
    background: #f9a825;
    color: #000;
}

/* ── Sparklines ── */
.sparkline {
    display: block;
    margin: 2px auto;
    height: 20px;
    width: 60px;
}

/* ── Reading list star ── */
.star-btn {
    cursor: pointer;
    font-size: 1.1rem;
    color: #ccc;
    transition: color .15s;
    background: none;
    border: none;
    padding: 0;
    line-height: 1;
}
.star-btn:hover {
    color: #f9a825;
}
.star-btn.starred {
    color: #f9a825;
}

/* ── Mobile card view ── */
@media only screen and (max-width: 600px) {
    .mobile-card-view #tabla,
    .mobile-card-view .dataTables_wrapper table {
        display: block !important;
    }
    .mobile-card-view #tabla thead {
        display: none;
    }
    .mobile-card-view #tabla tbody {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .mobile-card-view #tabla tbody tr {
        display: block;
        background: #fff;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        padding: 10px;
        box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    }
    .mobile-card-view #tabla tbody td {
        display: flex;
        padding: 4px 0;
        border: none;
        font-size: 0.82rem;
    }
    .mobile-card-view #tabla tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        color: #00695c;
        min-width: 100px;
        margin-right: 8px;
        font-size: 0.72rem;
        text-transform: uppercase;
    }
    body.dark-mode .mobile-card-view #tabla tbody tr {
        background: #16213e;
        border-color: #333;
    }
}

/* ── Print styles ── */
@media print {
    #loading-overlay,
    #backToTop,
    .mini-nav,
    .header-actions,
    .acks-toggle-link,
    .table-toolbar-right,
    .chart-download-btn,
    .filter-bar,
    .page-footer-custom,
    .noUi-target,
    .modal,
    .dataTables_filter,
    .dataTables_paginate,
    .dataTables_info,
    .dataTables_length {
        display: none !important;
    }
    .container {
        padding: 0 !important;
    }
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
    .chart-container,
    .chart-container-lg {
        height: auto !important;
        max-height: 400px;
    }
    #tabla td,
    #tabla thead th {
        font-size: 0.7rem !important;
        padding: 4px 6px !important;
    }
    .acks-content {
        display: block !important;
    }
}