/*
 * components.css — Reusable UI components (hero, cards, widgets, article cards, modals)
 * Split from modern-ojs.css for maintainability
 */

/* =========================================
   4. Hero Banner
========================================= */
.ac-hero {
    background: linear-gradient(135deg, var(--academic-blue) 0%, var(--academic-blue-dark) 100%);
    color: var(--bg-white);
}
.ac-hero-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    gap: var(--space-sm);
}
.ac-hero-tagline {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.7;
    margin: 0;
    max-width: 700px;
}
.ac-btn {
    display: block;
    text-align: center;
    padding: 12px 20px;
    font-weight: 700;
    font-size: var(--text-base);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    transition: all var(--transition-fast);
    text-decoration: none;
    cursor: pointer;
}
.ac-btn-primary {
    background: var(--bg-white);
    color: var(--academic-blue);
    border: 2px solid var(--bg-white);
}
.ac-btn-primary:hover {
    background: #F0F0F0;
}
.ac-btn-outline {
    background: transparent;
    color: var(--bg-white);
    border: 2px solid rgba(255,255,255,0.5);
}
.ac-btn-outline:hover {
    background: rgba(255,255,255,0.08);
    border-color: var(--bg-white);
}
.ac-btn-sm {
    padding: 8px 16px;
    font-size: var(--text-sm);
}

/* Hero Badges */
.ac-hero-badges {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: var(--space-sm);
}
.ac-badge {
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--text-xs);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 14px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xs);
    backdrop-filter: blur(4px);
    white-space: nowrap;
    letter-spacing: 0.01em;
    transition: background var(--transition-fast);
}
.ac-badge:hover {
    background: rgba(255, 255, 255, 0.2);
}
.ac-badge i {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.9);
}


/* =========================================
   5. Role Cards
========================================= */
.ac-role-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    padding: var(--space-xl) 0 var(--space-lg);
}
.ac-role-card {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: left;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    text-decoration: none;
    display: grid;
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto 1fr auto;
    column-gap: var(--space-sm);
    position: relative;
    overflow: hidden;
}
.ac-role-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--border-light);
    transition: background var(--transition-fast);
}
.ac-role-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}
.ac-role-card:hover::before { background: var(--action-color); }
.ac-role-card-highlight::before { background: var(--action-color); }
.ac-role-card-highlight:hover::before { background: var(--action-hover); }
.ac-role-icon {
    grid-row: 1;
    grid-column: 1;
    width: 40px;
    height: 40px;
    background: var(--bg-trust);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ac-role-icon i {
    font-size: var(--text-lg);
    color: var(--academic-blue);
}
.ac-role-card-title {
    grid-row: 1;
    grid-column: 2;
    align-self: center;
    font-size: var(--title-sm);
    font-weight: var(--title-weight);
    margin: 0;
}
.ac-role-card p {
    grid-row: 2;
    grid-column: 1 / -1;
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: 1.55;
    margin: var(--space-sm) 0;
}
.ac-role-cta {
    grid-row: 3;
    grid-column: 1 / -1;
    justify-self: start;
    align-self: end;
    color: var(--action-color);
    font-weight: 600;
    font-size: var(--text-md);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap var(--transition-fast);
}
.ac-role-card:hover .ac-role-cta { gap: 8px; }
.ac-role-card-highlight .ac-role-cta {
    background: var(--action-color);
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), gap var(--transition-fast);
}
.ac-role-card-highlight:hover .ac-role-cta { background: var(--action-hover); }


/* =========================================
   7. Section Titles & Articles
========================================= */
.ac-section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}
.ac-section-header .ac-section-title {
    margin-bottom: 0;
}
.ac-view-all {
    font-size: var(--text-md);
    font-weight: 500;
    color: var(--action-color);
    text-decoration: none;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color var(--transition-fast);
}
.ac-view-all:hover {
    color: var(--action-hover);
    text-decoration: underline;
}
.ac-section-title {
    font-size: var(--title-xl);
    font-weight: var(--title-weight-bold);
    margin: 0 0 var(--space-md);
    border-bottom: 2px solid var(--border-dark);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}
.ac-section-title i {
    font-size: var(--text-lg);
    color: var(--action-color);
}

/* obj_article_summary base overrides removed — .ac-article-card handles all card styling */

/* Empty State */
.ac-empty-state {
    background: var(--bg-white);
    border: 1px dashed var(--border-dark);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
}
.ac-empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-sm);
    background: linear-gradient(135deg, var(--academic-blue) 0%, var(--action-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ac-empty-icon i {
    font-size: var(--title-2xl);
    color: white;
}
.ac-empty-title {
    font-size: var(--title-xl);
    font-weight: var(--title-weight-bold);
    color: var(--heading-color);
    margin: 0 0 var(--space-xs);
}
.ac-empty-state p {
    color: var(--text-secondary);
    font-size: var(--text-base);
    max-width: 480px;
    margin: 0 auto var(--space-md);
    line-height: 1.6;
}
.ac-empty-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.ac-btn-inline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--text-md);
    text-decoration: none;
    transition: all var(--transition-fast);
}
.ac-btn-inline-primary {
    background: var(--action-color);
    color: white;
}
.ac-btn-inline-primary:hover {
    background: var(--action-hover);
    color: white;
    text-decoration: none;
}
.ac-btn-inline-secondary {
    background: transparent;
    color: var(--action-color);
    border: 1px solid var(--action-color);
}
.ac-btn-inline-secondary:hover {
    background: var(--action-color);
    color: white;
    text-decoration: none;
}


/* =========================================
   8. Sidebar Widgets
========================================= */
.ac-widget {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: var(--space-md);
}
.ac-widget-title {
    font-size: var(--title-sm);
    font-weight: var(--title-weight);
    margin: 0 0 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--academic-blue);
}
.ac-widget-title i {
    color: var(--action-color);
    font-size: var(--text-md);
}
.ac-widget p {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: 1.55;
    margin: 0 0 12px;
}

.ac-widget-metrics {
    border-top: 3px solid var(--academic-blue);
}
.ac-metrics-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.ac-metrics-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px dotted var(--border-light);
    font-size: var(--text-md);
}
.ac-metrics-list li:last-child { border-bottom: none; }
.ac-metric-label { color: var(--text-secondary); }
.ac-metric-value { color: var(--text-primary); font-weight: 600; }
.ac-metric-yes { color: var(--success-green); }
.ac-metric-yes i { color: var(--success-green); }

.ac-widget-submit {
    border-top: 3px solid var(--action-color);
}

.ac-sidebar-btn {
    display: block;
    width: 100%;
    padding: 10px;
    text-align: center;
    background: var(--action-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--text-md);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-sizing: border-box;
}
.ac-sidebar-btn:hover {
    background: var(--action-hover);
    color: white;
    text-decoration: none;
}
.ac-sidebar-btn-outline {
    background: transparent;
    color: var(--action-color);
    border: 1px solid var(--action-color);
}
.ac-sidebar-btn-outline:hover {
    background: var(--action-color);
    color: white;
}

.ac-issue-cover-wrap { text-align: center; margin-bottom: 10px; }
.ac-issue-cover-img {
    max-width: 100%;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}
.ac-issue-info { text-align: center; margin-bottom: 10px; }
.ac-issue-link {
    font-weight: 600;
    font-size: var(--text-base);
    color: var(--academic-blue);
}
.ac-view-all-link {
    display: block;
    text-align: center;
    font-size: var(--text-sm);
    color: var(--action-color);
    padding-top: 10px;
    border-top: 1px solid var(--border-light);
    margin-top: 10px;
    font-weight: 500;
}

.ac-widget-subscribe {
    background: var(--bg-trust);
    border: none;
}

/* Quick Links widget */
.ac-quick-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.ac-quick-links li {
    border-bottom: 1px solid var(--border-light);
}
.ac-quick-links li:last-child {
    border-bottom: none;
}
.ac-quick-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 4px;
    font-size: var(--text-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.ac-quick-links a:hover {
    color: var(--action-color);
}
.ac-quick-links a i {
    width: 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-md);
}
.ac-quick-links a:hover i {
    color: var(--action-color);
}

/* System button overrides */
body .cmp_button_primary, body .obj_galley_link.pdf {
    background-color: var(--action-color) !important;
    color: var(--bg-white) !important;
    border: none !important;
    border-radius: var(--radius-sm) !important;
    padding: 8px 14px !important;
    font-size: var(--text-sm) !important;
    font-weight: 600 !important;
}
body .cmp_button_primary:hover, body .obj_galley_link.pdf:hover {
    background-color: var(--action-hover) !important;
}


/* =========================================
   9. Trust Section
========================================= */
.ac-trust-section {
    background: var(--bg-trust);
    padding: var(--space-lg) 0;
}
.ac-trust-heading {
    text-align: center;
    font-size: var(--title-2xl);
    font-weight: var(--title-weight-bold);
    margin: 0 0 var(--space-md);
    color: var(--academic-blue);
}
.ac-trust-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}
.ac-trust-card {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: left;
    display: grid;
    grid-template-columns: 40px 1fr;
    column-gap: var(--space-sm);
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}
.ac-trust-card:hover {
    transform: translateY(-2px);
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md);
}
.ac-trust-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--academic-blue) 0%, var(--action-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ac-trust-icon i {
    font-size: var(--text-lg);
    color: white;
}
.ac-trust-card-title {
    font-size: var(--title-sm);
    font-weight: var(--title-weight);
    color: var(--text-primary);
    margin: 0;
}
.ac-trust-card p {
    grid-column: 1 / -1;
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: 1.55;
    margin: var(--space-xs) 0 0;
}


/* ─────────────────────────────────────────────
   Section 34: Article Summary Cards (Homepage & TOC)
   ───────────────────────────────────────────── */
.ac-article-card {
    display: flex;
    align-items: stretch;
    position: relative;
    background: #fff;
    border: 1px solid #e8ecf0;
    border-radius: var(--radius-lg);
    margin-bottom: 12px;
    transition: box-shadow var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
    overflow: hidden;
    cursor: pointer;
}
.ac-article-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: #c5d0db;
    transform: translateY(-2px);
}
.ac-article-card-body {
    flex: 1;
    padding: 12px 24px;
    min-width: 0;
}
/* Unified badge row — shared across homepage / site / articles / search / issue.
   (Previously only styled inline on the articles page, leaving other pages' rows
   unstyled.) */
.ac-card-badges-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}
.ac-card-badges-row:empty {
    display: none;
}
/* Both badges share the same shape/size; colour distinguishes their meaning:
   section = blue accent label, journal = neutral source tag. */
.ac-card-section-badge,
.articles-journal-badge {
    display: inline-flex;
    align-items: center;
    font-size: var(--text-xs);
    line-height: 1.4;
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    margin: 0;
}
.ac-card-section-badge {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #2563eb;
    background: #eff6ff;
}
.articles-journal-badge {
    font-weight: 500;
    color: #475569;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
}
.ac-card-title {
    font-size: var(--title-md);
    font-weight: 700;
    line-height: 1.45;
    margin: 0 0 8px;
}
.ac-card-title a {
    color: #1a1a2e;
    text-decoration: none;
    transition: color var(--transition-normal);
}
.ac-card-title a::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
}
.ac-card-title a:hover {
    color: #2563eb;
}
.ac-card-authors {
    font-size: var(--text-md);
    color: #555;
    margin-bottom: 10px;
    line-height: 1.5;
}
.ac-card-abstract {
    font-size: var(--text-md);
    color: #555;
    line-height: 1.6;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ac-card-footer {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.ac-card-date {
    font-size: var(--text-sm);
    color: #6B7280;
}
.ac-card-date i {
    margin-right: 4px;
}
.ac-card-galley {
    display: inline-flex;
    align-items: center;
}
.ac-card-galley a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-xs);
    font-weight: 600;
    color: #2563eb;
    background: #eff6ff;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    position: relative;
    z-index: 2;
    text-decoration: none;
    transition: background var(--transition-normal);
}
.ac-card-galley a:hover {
    background: #dbeafe;
}
/* The global "body .obj_galley_link.pdf" override (!important) inflates only the
   PDF chip inside cards; force both galley types to the same compact metrics */
.ac-card-galley .obj_galley_link,
.ac-card-galley .obj_galley_link.pdf {
    height: 26px;
    padding: 0 12px !important;
    font-size: var(--text-xs) !important;
    line-height: 1 !important;
    border: none !important;
}
.ac-card-read-more {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    min-width: 52px;
    background: #f8fafc;
    color: #94a3b8;
    font-size: var(--title-md);
    text-decoration: none;
    border-left: 1px solid #e8ecf0;
    transition: background var(--transition-normal), color var(--transition-normal);
    position: relative;
    z-index: 2;
}
.ac-article-card:hover .ac-card-read-more {
    background: #2563eb;
    color: #fff;
}

/* Issue TOC on homepage cleanup */
.ac-main .obj_issue_toc > .heading,
.ac-main .obj_issue_toc > .description,
.ac-main .obj_issue_toc > .published,
.ac-main .obj_issue_toc > .cover,
.ac-main .obj_issue_toc .sections .section > .label { display: none; }

/* Issue TOC section headings on homepage: clean styling */
.ac-main .obj_issue_toc .sections .section > h2,
.ac-main .obj_issue_toc .sections .section > h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    position: static;
    left: auto;
    padding: 0 0 var(--space-xs);
    margin: var(--space-md) 0 var(--space-sm);
    font-size: var(--title-md);
    font-weight: var(--title-weight-bold);
    color: var(--heading-color);
    background: transparent;
    line-height: 1.4;
    border-bottom: 2px solid var(--border-light);
}
.ac-main .obj_issue_toc .sections .section:first-child > h2,
.ac-main .obj_issue_toc .sections .section:first-child > h3 {
    margin-top: 0;
}
.ac-main .obj_issue_toc .sections {
    padding: 0;
    margin: 0;
}
.ac-main .obj_issue_toc .sections .section {
    padding: 0;
    margin: 0;
    background: transparent;
}
.ac-main .cmp_article_list { list-style: none; padding: 0; margin: 0; }

/* Issue TOC page uses the same rich bordered cards as the rest of the site
   (content-rich layout preferred over a compact flat list). */

/* Issue TOC page only: cap abstract line length for readability on full-width rows.
   CJK glyphs are ~2ch wide, so zh pages get a wider cap (~48 chars/line) to avoid
   the abstract stalling at half the row width */
.page_issue .obj_issue_toc .ac-card-abstract {
    max-width: 72ch;
}
html[lang^="zh"] .page_issue .obj_issue_toc .ac-card-abstract {
    max-width: 96ch;
}

/* Issue TOC page (full view) — keep cover visible */
.page_issue .obj_issue_toc > .cover { display: block !important; }
.page_issue .obj_issue_toc > .description { display: block !important; }
.page_issue .obj_issue_toc > .published { display: block !important; }

/* Issue TOC section headings (issue detail page): override OJS default */
.obj_issue_toc .sections .section > h2,
.obj_issue_toc .sections .section > h3 {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    position: static !important;
    left: auto !important;
    padding: 0 0 var(--space-xs) !important;
    margin: var(--space-md) 0 var(--space-sm) !important;
    font-size: var(--title-md) !important;
    font-weight: var(--title-weight-bold) !important;
    color: var(--heading-color) !important;
    background: transparent !important;
    line-height: 1.4 !important;
    border-bottom: 2px solid var(--border-light);
}

@media (max-width: 768px) {
    .ac-article-card {
        flex-direction: column;
    }
    .ac-card-read-more {
        width: 100%;
        min-width: unset;
        height: 44px;
        border-left: none;
        border-top: 1px solid #e8ecf0;
    }
    .ac-article-card-body {
        padding: 16px 18px;
    }
}

/* ======================================== */
/* Section 35: B2 — Research Areas          */
/* ======================================== */
.ac-research-areas {
    padding: 8px 0 var(--space-xl) 0;
    background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
}
.ac-ra-heading {
    text-align: center;
    margin: 0 0 4px;
}
.ac-ra-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: var(--text-lg);
    margin-bottom: 32px;
}
.ac-ra-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.ac-ra-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-fast);
    text-align: center;
}
.ac-ra-card:hover {
    border-color: var(--action-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.ac-ra-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--action-color);
    color: #fff;
    border-radius: 50%;
    font-size: var(--title-lg);
}
.ac-ra-card-title {
    font-size: var(--title-sm);
    font-weight: var(--title-weight);
    color: var(--heading-color);
    margin: 0 0 8px;
}
.ac-ra-card p {
    font-size: var(--text-md);
    line-height: 1.5;
    color: var(--text-light);
    margin: 0;
}
@media (max-width: 900px) {
    .ac-ra-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .ac-ra-grid {
        grid-template-columns: 1fr;
    }
}

/* ======================================== */
/* Section 36: B3 — Article Metrics         */
/* ======================================== */

/* Card-level metric badges */
.ac-card-metrics {
    display: inline-flex;
    gap: 8px;
    margin-left: auto;
}
.ac-metric-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    height: 26px;
    font-size: var(--text-xs);
    color: var(--text-light);
    background: #f0f4f8;
    padding: 0 10px;
    border-radius: var(--radius-lg);
    white-space: nowrap;
}
.ac-metric-badge .fa {
    font-size: var(--text-xs);
}
.ac-metric-badge.ac-metric-dl {
    background: #eef6ee;
    color: #3a7d44;
}

/* Details-page sidebar metrics card */
.ac-metrics-card {
    background: linear-gradient(135deg, #f0f7ff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
}
.ac-metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.ac-metrics-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 14px 8px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.ac-metrics-item.ac-metrics-dl {
    border-color: #c8e6c9;
}
.ac-metrics-number {
    font-size: var(--title-2xl);
    font-weight: 700;
    color: var(--action-color);
    line-height: 1;
}
.ac-metrics-item.ac-metrics-dl .ac-metrics-number {
    color: #3a7d44;
}
.ac-metrics-label {
    font-size: var(--text-xs);
    color: var(--text-light);
    margin-top: 4px;
}


/* =========================================
   36b. Hero Search Box
========================================= */
.ac-hero-search {
    width: 100%;
    max-width: 560px;
}
.ac-hero-search-box {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.95);
    border-radius: var(--radius-md);
    padding: 4px 4px 4px 20px;
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-normal);
}
.ac-hero-search-box:focus-within {
    box-shadow: var(--focus-ring);
}
.ac-hero-search-box .fa-search {
    color: var(--text-light);
    font-size: var(--text-lg);
    margin-right: 12px;
    flex-shrink: 0;
}
.ac-hero-search-box input {
    border: none;
    outline: none;
    background: transparent;
    flex: 1;
    font-size: var(--text-base);
    color: var(--text-primary);
    padding: 10px 0;
    min-width: 0;
}
.ac-hero-search-box input::placeholder {
    color: var(--text-light);
}
.ac-hero-search-box button {
    background: var(--action-color);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 22px;
    font-size: var(--text-md);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-normal);
    white-space: nowrap;
}
.ac-hero-search-box button:hover {
    background: var(--action-hover);
}

/* Homepage announcement cards */
.ac-section .cmp_announcements {
    margin-top: 0;
}
.ac-section .cmp_announcements > h2 {
    display: none;
}
.ac-section .cmp_announcements .obj_announcement_summary {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    margin-bottom: var(--space-sm);
    transition: box-shadow var(--transition-normal);
}
.ac-section .cmp_announcements .obj_announcement_summary:hover {
    box-shadow: var(--shadow-sm);
}
.ac-section .cmp_announcements .obj_announcement_summary h3,
.ac-section .cmp_announcements .obj_announcement_summary h4 {
    font-size: var(--text-lg);
    margin-bottom: 4px;
}
.ac-section .cmp_announcements .obj_announcement_summary h3 a,
.ac-section .cmp_announcements .obj_announcement_summary h4 a {
    color: var(--academic-blue);
    text-decoration: none;
}
.ac-section .cmp_announcements .obj_announcement_summary h3 a:hover,
.ac-section .cmp_announcements .obj_announcement_summary h4 a:hover {
    color: var(--action-color);
}
.ac-section .cmp_announcements .obj_announcement_summary .date {
    font-size: var(--text-sm);
    color: var(--text-light);
}
.ac-section .cmp_announcements .more {
    display: grid;
    gap: var(--space-sm);
}

@media (max-width: 768px) {
    .ac-hero-search-box {
        border-radius: var(--radius-lg);
        padding: 4px 4px 4px 14px;
    }
    .ac-hero-search-box button {
        padding: 10px 16px;
    }
}


/* =========================================
   41. Download Login Modal & No-Galley Placeholder
========================================= */
.ac-no-galley-text {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: var(--text-md);
    padding: 12px 16px;
    background: var(--bg-muted);
    border-radius: var(--radius-md);
    margin: 0;
}
.ac-no-galley-text i {
    color: var(--text-light);
}
.ac-login-required-download {
    cursor: pointer;
    border: none;
    font-family: inherit;
}
.ac-login-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ac-login-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}
.ac-login-modal-content {
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px 32px 32px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: acModalFadeIn 0.2s ease;
}
@keyframes acModalFadeIn {
    from { opacity: 0; transform: translateY(-10px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.ac-login-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: var(--title-2xl);
    color: var(--text-light);
    cursor: pointer;
    line-height: 1;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}
.ac-login-modal-close:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}
.ac-login-modal-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, #EEF2FF, #E0E7FF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ac-login-modal-icon i {
    font-size: var(--title-xl);
    color: var(--action-color);
}
.ac-login-modal-title {
    font-size: var(--title-md);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px;
}
.ac-login-modal-desc {
    font-size: var(--text-md);
    color: var(--text-secondary);
    margin: 0 0 24px;
    line-height: 1.5;
}
.ac-login-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.ac-login-modal-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}
.ac-login-modal-btn-primary {
    background: var(--action-color);
    color: #fff;
}
.ac-login-modal-btn-primary:hover {
    background: var(--action-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.ac-login-modal-btn-secondary {
    background: var(--bg-muted);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.ac-login-modal-btn-secondary:hover {
    background: var(--bg-light);
    border-color: var(--action-color);
    color: var(--action-color);
}

/* =========================================
   Back to Top Button
========================================= */
.ac-back-to-top {
    position: fixed;
    right: 24px;
    bottom: var(--space-lg);
    z-index: 999;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--action-color);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal), background var(--transition-normal), bottom var(--transition-normal);
}
.ac-back-to-top.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
/* 版权条进入视口时上移停靠，不遮挡页脚文字（--ac-bttop-offset 由 footer.js 设置） */
.ac-back-to-top.is-docked {
    bottom: calc(var(--space-lg) + var(--ac-bttop-offset, 0px));
}
.ac-back-to-top:hover {
    background: var(--action-hover);
    box-shadow: var(--shadow-lg);
}
.ac-back-to-top:active {
    transform: translateY(-2px);
}
@media (max-width: 768px) {
    .ac-back-to-top {
        right: 16px;
        bottom: 16px;
        width: 40px;
        height: 40px;
    }
}


/* =========================================
   43. Issue TOC — Complete Component System
   Covers: ac-issue-header, ac-issue-cover,
   ac-issue-meta, ac-issue-nav, ac-issue-galleys,
   ac-section-heading, ac-section-count
========================================= */

/* --- TOC Container — neutralize OJS default spacing --- */
.ac-issue-toc {
    /* no max-width needed: already constrained by .page inside .pkp_structure_content */
}
.ac-issue-toc .sections:not(:first-child) {
    margin-top: 0;
}
.ac-issue-toc .section {
    position: static;
    margin: 0;
    padding: 0;
}
.ac-issue-toc .section::before {
    display: none;
}
.ac-issue-toc .articles {
    margin-top: 0;
    list-style: none;
    padding: 0;
    margin-bottom: 0;
}

/* --- Issue Header: cover + metadata side-by-side --- */
.ac-issue-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm) 0 var(--space-md);
    border-bottom: 2px solid var(--academic-blue);
    margin-bottom: var(--space-md);
}

/* Cover image */
.ac-issue-header .ac-issue-cover {
    flex: 0 0 180px;
    max-width: 180px;
}
.ac-issue-header .ac-issue-cover img {
    width: 100%;
    height: auto;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: block;
    transition: box-shadow var(--transition-normal);
}
.ac-issue-header .ac-issue-cover img:hover {
    box-shadow: var(--shadow-lg);
}

/* Metadata block */
.ac-issue-meta {
    flex: 1;
    min-width: 0;
}

/* Issue title inside metadata */
.ac-issue-title {
    font-size: var(--title-2xl);
    font-weight: 700;
    color: var(--academic-blue);
    margin: 0 0 8px;
    line-height: 1.3;
}

/* Stats row (date · articles · views · downloads) */
.ac-issue-stats-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: 8px;
}
.ac-issue-stat-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: var(--text-md);
    color: var(--text-secondary);
}
.ac-issue-stat-item i {
    color: var(--academic-blue);
    font-size: 0.8em;
    opacity: 0.7;
}

/* ISSN row */
.ac-issue-issn {
    font-size: var(--text-md);
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Metadata labels (shared) */
.ac-issue-meta-label {
    font-weight: 600;
    color: var(--text-primary);
}
.ac-issue-meta-value {
    color: var(--text-secondary);
}
.ac-issue-meta-divider {
    color: var(--text-muted);
    padding: 0 2px;
}

/* Issue description */
.ac-issue-description {
    font-size: var(--text-base);
    line-height: 1.65;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* DOI display */
.ac-issue-doi {
    font-size: var(--text-md);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.ac-issue-doi a {
    color: var(--action-color);
    text-decoration: none;
    word-break: break-all;
}
.ac-issue-doi a:hover {
    text-decoration: underline;
    color: var(--action-hover);
}

/* Pub IDs (same style as DOI) */
.ac-issue-pubid {
    font-size: var(--text-md);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.ac-issue-pubid a {
    color: var(--action-color);
    text-decoration: none;
    word-break: break-all;
}
.ac-issue-pubid a:hover {
    text-decoration: underline;
    color: var(--action-hover);
}

/* --- Section divider between article groups --- */
.ac-section-divider {
    border-top: 1px solid var(--border-light);
    padding-top: var(--space-sm);
}

/* --- Issue Navigation: prev / archive / next — bottom of page --- */
.ac-issue-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    margin-top: var(--space-md);
    border-top: 2px solid var(--border-light);
}
.ac-issue-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-md);
    font-weight: 500;
    color: var(--action-color);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    background: var(--bg-white);
    transition: all var(--transition-fast);
}
a.ac-issue-nav-btn:hover {
    background: var(--bg-muted);
    border-color: var(--action-color);
    color: var(--action-hover);
    text-decoration: none;
}
.ac-issue-nav-disabled {
    color: var(--text-muted);
    cursor: default;
    opacity: 0.5;
    pointer-events: none;
}
.ac-issue-nav-archive {
    font-size: var(--text-md);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    transition: color var(--transition-fast);
}
.ac-issue-nav-archive:hover {
    color: var(--action-color);
    text-decoration: underline;
}

/* --- Full Issue Galleys --- */
.ac-issue-galleys {
    margin-bottom: var(--space-md);
    padding: 16px 20px;
    background: var(--bg-muted);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}
.ac-issue-galleys-title {
    font-size: var(--title-sm);
    font-weight: var(--title-weight);
    color: var(--text-primary);
    margin-bottom: 10px;
}
.ac-issue-galleys-list {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}
.ac-issue-galleys-list a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: var(--text-md);
    font-weight: 500;
    color: var(--action-color);
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
}
.ac-issue-galleys-list a:hover {
    background: var(--action-color);
    color: #fff;
    border-color: var(--action-color);
}

/* --- Section Headings with article count badge --- */
.ac-issue-toc .ac-section-heading {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--title-md);
    font-weight: var(--title-weight-bold);
    color: var(--heading-color);
    padding: 0 0 var(--space-xs);
    margin: var(--space-lg) 0 var(--space-sm);
    border-bottom: 2px solid var(--border-light);
    line-height: 1.4;
}
.ac-issue-toc .sections .section:first-child .ac-section-heading {
    margin-top: 0;
}
.ac-section-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--action-color);
    background: rgba(0, 115, 152, 0.08);
    border-radius: var(--radius-lg);
    line-height: 1;
}

/* --- Responsive: tablet --- */
@media (max-width: 900px) {
    .ac-issue-header .ac-issue-cover {
        flex: 0 0 140px;
        max-width: 140px;
    }
}

/* --- Responsive: mobile --- */
@media (max-width: 640px) {
    .ac-issue-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-sm);
        padding: var(--space-sm) 0;
    }
    .ac-issue-header .ac-issue-cover {
        flex: none;
        max-width: 200px;
        width: 100%;
    }
    .ac-issue-title {
        font-size: var(--title-lg);
    }
    .ac-issue-stats-row {
        justify-content: center;
        gap: var(--space-sm);
    }
    .ac-issue-issn {
        justify-content: center;
    }
    .ac-issue-doi,
    .ac-issue-pubid {
        justify-content: center;
        flex-wrap: wrap;
    }

    .ac-issue-nav {
        flex-direction: column;
        gap: var(--space-xs);
    }
    .ac-issue-nav-btn {
        width: 100%;
        justify-content: center;
    }
    .ac-issue-nav-archive {
        width: 100%;
        text-align: center;
    }

    .ac-issue-galleys-list {
        flex-direction: column;
    }
    .ac-issue-galleys-list a {
        justify-content: center;
    }
}

/* --- Homepage override: hide redundant header when inside .ac-main --- */
.ac-main .ac-issue-toc > .ac-issue-header {
    display: none;
}
.ac-main .ac-issue-toc > .ac-issue-nav {
    display: none;
}
.ac-main .ac-issue-toc > .ac-issue-galleys {
    display: none;
}