/* Filters dropdowns - dark background styling */
.filters-row .filter-group select {
    background-color: #000;
    color: #eaeaea;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 8px 12px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.filters-row .filter-group select:focus {
    border-color: #4f46e5; /* keep existing accent tone */
    box-shadow: 0 0 0 2px rgba(79,70,229,0.25);
}

.filters-row .filter-group select option {
    background-color: #000;
    color: #eaeaea;
}

/* Optional caret indicator for modern browsers */
.filters-row .filter-group select {
    background-image: linear-gradient(45deg, transparent 50%, #eaeaea 50%),
                                        linear-gradient(135deg, #eaeaea 50%, transparent 50%),
                                        linear-gradient(to right, #000, #000);
    background-position: calc(100% - 18px) calc(50% - 4px),
                                             calc(100% - 12px) calc(50% - 4px),
                                             100% 0;
    background-size: 6px 6px, 6px 6px, 2.5em 100%;
    background-repeat: no-repeat;
    padding-right: 2.5em; /* space for caret */
}

/* -------------------------------------------------- */
/* Syllabus block styles (article content)             */
/* -------------------------------------------------- */
.article-body .syllabus {
    background: rgba(20, 20, 20, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 24px;
    margin: 24px 0;
}

.article-body .syllabus-header {
    margin-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 12px;
}

.article-body .syllabus-header h1 {
    font-size: 1.5rem;
    line-height: 1.2;
    margin: 0 0 6px 0;
    color: #eaeaea;
}

.article-body .syllabus-subtitle {
    color: #9aa0a6;
    margin: 0;
    font-size: 0.95rem;
}

.article-body .syllabus-section {
    margin-top: 18px;
}

.article-body .syllabus-section h2 {
    font-size: 1.15rem;
    margin: 0 0 10px 0;
    color: #e0e0e0;
}

.article-body .syllabus-section h3 {
    font-size: 1rem;
    margin: 8px 0 6px 0;
    color: #d6d6d6;
}

.article-body .syllabus-section p {
    color: #cfcfcf;
    margin: 0 0 6px 0;
}

.article-body .syllabus-section ul,
.article-body .syllabus-section ol {
    margin: 8px 0 8px 18px;
    padding: 0;
}

.article-body .syllabus-section li {
    margin: 4px 0;
}

.article-body .syllabus-section dl {
    margin: 8px 0 0 0;
}

.article-body .syllabus-section dt {
    color: #e0e0e0;
    font-weight: 600;
}

.article-body .syllabus-section dd {
    margin: 0 0 6px 0;
    color: #cfcfcf;
}

.article-body .syllabus-footer {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: #bdbdbd;
}

/* Mobile optimizations */
@media (max-width: 640px) {
    .article-body .syllabus {
        padding: 16px;
        border-radius: 10px;
    }
    .article-body .syllabus-header h1 {
        font-size: 1.25rem;
    }
    .article-body .syllabus-section h2 {
        font-size: 1.05rem;
    }
}
/* Public Page Styles - Wikipedia-like interface */

/* Public Container */
.public-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    min-height: calc(100vh - var(--header-height, 60px) - var(--footer-height, 120px));
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    margin: 0 calc(-1 * var(--spacing-md)) var(--spacing-xl);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-icon {
    font-size: 3.5rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    opacity: 0.9;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.8);
    color: white;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
    color: white;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-stats .stat-card {
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.hero-stats .stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255,255,255,0.2);
}

.hero-stats .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.hero-stats .stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

/* Articles Section */
.articles-section {
    background: var(--color-bg-light);
}

body.dark-mode .articles-section {
    background: var(--color-bg-dark);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text-primary-light);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

body.dark-mode .section-title {
    color: var(--color-text-primary-dark);
}

.section-icon {
    font-size: 1.8rem;
}

.section-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.2s ease;
}

.section-link:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

/* Featured Articles */
.featured-articles {
    display: grid;
    gap: var(--spacing-xl);
}

.article-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

body.dark-mode .article-card {
    background: var(--color-bg-secondary-dark);
    border-color: var(--color-border-dark);
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

body.dark-mode .article-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.article-header {
    margin-bottom: var(--spacing-md);
}

.article-title {
    margin: 0 0 var(--spacing-sm) 0;
}

.article-title a {
    color: var(--color-text-primary-light);
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: 600;
    line-height: 1.3;
}

body.dark-mode .article-title a {
    color: var(--color-text-primary-dark);
}

.article-title a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-text-secondary-light);
}

body.dark-mode .article-meta {
    color: var(--color-text-secondary-dark);
}

.article-author {
    font-weight: 500;
}

.article-institution {
    font-style: italic;
}

.article-date {
    font-weight: 400;
}

.article-content {
    margin-bottom: var(--spacing-lg);
}

.article-abstract {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-primary-light);
    margin: 0;
}

body.dark-mode .article-abstract {
    color: var(--color-text-primary-dark);
}

.article-footer {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
}

.read-more-btn {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.read-more-btn:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* No Articles State */
.no-articles {
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--color-text-secondary-light);
}

body.dark-mode .no-articles {
    color: var(--color-text-secondary-dark);
}

.no-articles-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.6;
}

.no-articles h3 {
    color: var(--color-text-primary-light);
    margin-bottom: var(--spacing-md);
}

body.dark-mode .no-articles h3 {
    color: var(--color-text-primary-dark);
}

.demo-notice {
    background: var(--color-bg-secondary-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

body.dark-mode .demo-notice {
    background: var(--color-bg-secondary-dark);
    border-color: var(--color-border-dark);
}

/* Sidebar */
.sidebar {
    background: var(--color-bg-light);
}

body.dark-mode .sidebar {
    background: var(--color-bg-dark);
}

.sidebar-section {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

body.dark-mode .sidebar-section {
    background: var(--color-bg-secondary-dark);
    border-color: var(--color-border-dark);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.sidebar-section.highlight {
    border-color: var(--color-primary);
    border-width: 2px;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary-light);
    margin: 0 0 var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

body.dark-mode .sidebar-title {
    color: var(--color-text-primary-dark);
}

.sidebar-icon {
    font-size: 1.2rem;
}

/* Recent Articles List */
.recent-articles-list {
    display: grid;
    gap: var(--spacing-md);
}

.recent-article-item {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.recent-article-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-article-title {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 0.95rem;
    line-height: 1.3;
}

.recent-article-title a {
    color: var(--color-text-primary-light);
    text-decoration: none;
    font-weight: 500;
}

body.dark-mode .recent-article-title a {
    color: var(--color-text-primary-dark);
}

.recent-article-title a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.recent-article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--color-text-secondary-light);
}

body.dark-mode .recent-article-meta {
    color: var(--color-text-secondary-dark);
}

.sidebar-empty {
    color: var(--color-text-secondary-light);
    font-style: italic;
    margin: 0;
}

body.dark-mode .sidebar-empty {
    color: var(--color-text-secondary-dark);
}

.demo-info {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--color-text-secondary-light);
}

body.dark-mode .demo-info {
    color: var(--color-text-secondary-dark);
}

/* About and Research Sections */
.about-content,
.researcher-content {
    color: var(--color-text-primary-light);
    line-height: 1.5;
}

body.dark-mode .about-content,
body.dark-mode .researcher-content {
    color: var(--color-text-primary-dark);
}

.about-actions,
.researcher-actions {
    margin-top: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    text-align: center;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .public-container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-section {
        margin: 0 calc(-1 * var(--spacing-sm)) var(--spacing-lg);
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2.2rem;
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-icon {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
        min-width: 200px;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .main-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .article-card {
        padding: var(--spacing-lg);
    }
    
    .article-title a {
        font-size: 1.2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .sidebar-section {
        padding: var(--spacing-md);
    }
    
    .about-actions,
    .researcher-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-icon {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
    }
    
    .hero-stats .stat-number {
        font-size: 2rem;
    }
}

/* ================================================
   ARTICLE READING PAGE STYLES
   ================================================ */

.article-content {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 2rem;
    box-sizing: border-box;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    align-items: start;
    height: 100%; /* fill available space to allow inner scroll */
}

.article-reader {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: var(--shadow-soft);
    line-height: 1.7;
    max-height: 100%;
    overflow-y: auto; /* scroll only inside article body */
    -webkit-overflow-scrolling: touch;
}

.article-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.separator {
    margin: 0 0.5rem;
}

.article-categories {
    margin-bottom: 1.5rem;
}

.keyword-tag {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    text-decoration: none;
    margin: 0 0.5rem 0.5rem 0;
    transition: var(--transition-smooth);
}

.keyword-tag:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.article-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.article-subtitle h2 {
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.article-author-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.author-details {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.author-name strong {
    color: var(--text-primary);
}

.read-stats {
    display: flex;
    gap: 1rem;
}

.article-abstract {
    background: var(--background-secondary);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
    border-left: 4px solid var(--primary-color);
}

.article-abstract h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.abstract-content {
    color: var(--text-secondary);
    font-style: italic;
}

.article-body {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.content-wrapper h1,
.content-wrapper h2,
.content-wrapper h3,
.content-wrapper h4,
.content-wrapper h5,
.content-wrapper h6 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.content-wrapper h1 { font-size: 2rem; }
.content-wrapper h2 { font-size: 1.7rem; }
.content-wrapper h3 { font-size: 1.4rem; }
.content-wrapper h4 { font-size: 1.2rem; }

.content-wrapper p {
    margin-bottom: 1.5rem;
}

.content-wrapper blockquote {
    background: var(--background-secondary);
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.5rem;
    margin: 2rem 0;
    font-style: italic;
}

.content-wrapper ul,
.content-wrapper ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.content-wrapper li {
    margin-bottom: 0.5rem;
}

.content-wrapper table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--surface-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.content-wrapper th,
.content-wrapper td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.content-wrapper th {
    background: var(--background-secondary);
    font-weight: 600;
    color: var(--primary-color);
}

.article-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.article-tags h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tag-link {
    background: var(--background-secondary);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.tag-link:hover {
    background: var(--primary-color);
    color: white;
}

.article-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.action-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.related-articles {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
    height: fit-content;
    position: sticky;
    top: 2rem;
}

.related-articles h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.related-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.related-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.related-item h4 {
    margin-bottom: 0.5rem;
}

.related-item h4 a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    line-height: 1.3;
}

.related-item h4 a:hover {
    color: var(--primary-color);
}

.related-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.related-abstract {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.article-not-found {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    grid-column: 1 / -1;
}

.not-found-content h1 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.not-found-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.not-found-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ================================================
   BROWSE PAGE STYLES
   ================================================ */

.browse-content {
    min-height: 80vh;
}

.browse-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
}

.browse-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.browse-description {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
}

.browse-stats .stat-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.search-filters {
    background: var(--surface-color);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-soft);
}

.search-form {
    max-width: 800px;
    margin: 0 auto;
}

.search-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.search-input {
    flex: 1;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--background-color);
    color: var(--text-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.search-btn {
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.search-btn:hover {
    background: var(--primary-hover);
}

.filters-row {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 500;
    color: var(--text-primary);
}

.filter-group select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--background-color);
    color: var(--text-primary);
}

.clear-filters {
    color: var(--danger-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.clear-filters:hover {
    background: var(--danger-color);
    color: white;
}

.active-filters {
    background: var(--background-secondary);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.filters-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filters-label {
    font-weight: 500;
    color: var(--text-primary);
}

.filter-tag {
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.remove-filter {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    font-weight: bold;
}

.remove-filter:hover {
    opacity: 1;
}

.browse-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    padding: 2rem 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.article-card {
    background: var(--surface-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.card-content {
    padding: 1.5rem;
    flex: 1;
}

.article-card .article-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-card .article-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.article-card .article-title a:hover {
    color: var(--primary-color);
}

.article-card .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.article-card .article-abstract {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.article-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.article-keywords .keyword-tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
}

.more-keywords {
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
}

.card-actions {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--background-secondary);
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.read-more:hover {
    color: var(--primary-hover);
}

.browse-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-section {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
}

.sidebar-section h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.keywords-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.keyword-cloud-item {
    background: var(--background-secondary);
    color: var(--text-primary);
    padding: 0.5rem 0.8rem;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.keyword-cloud-item:hover,
.keyword-cloud-item.active {
    background: var(--primary-color);
    color: white;
}

.keyword-cloud-item .count {
    font-size: 0.8rem;
    opacity: 0.7;
}

.quick-search {
    display: flex;
    gap: 0.5rem;
}

.quick-search input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--background-color);
    color: var(--text-primary);
}

.quick-search-btn {
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

.browse-stats-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.browse-stats-sidebar .stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--background-secondary);
    border-radius: 8px;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.no-articles {
    grid-column: 1 / -1;
    min-height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.no-results-content h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.no-results-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.no-results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.pagination {
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pagination-btn {
    padding: 0.8rem 1.2rem;
    background: var(--surface-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.pagination-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.page-numbers {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.page-number {
    padding: 0.5rem 0.8rem;
    background: var(--surface-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    min-width: 40px;
    text-align: center;
}

.page-number:hover,
.page-number.current {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-ellipsis {
    padding: 0.5rem;
    color: var(--text-secondary);
}

/* Extended Mobile Responsive Design */
@media (max-width: 768px) {
    /* Article page responsive */
    .article-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 1rem;
    }
    
    .article-reader {
        padding: 1.5rem;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .author-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .article-actions {
        flex-direction: column;
    }
    
    .related-articles {
        position: static;
    }
    
    /* Browse page responsive */
    .browse-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .search-input-group {
        flex-direction: column;
    }
    
    .filters-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .pagination-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .page-numbers {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    /* About page responsive */
    .about-content {
        padding: 1rem;
    }
    
    .research-areas {
        grid-template-columns: 1fr;
    }
    
    .review-process {
        flex-direction: column;
        align-items: center;
    }
    
    .open-access-benefits {
        flex-direction: column;
    }
    
    .researcher-actions {
        flex-direction: column;
    }
}

/* ================================================
     PRINT STYLES: Print only the article body
     ================================================ */
@media print {
    /* Reset layout for print */
    html, body {
        height: auto !important;
        overflow: visible !important;
        background: #fff !important;
    }

    /* Hide non-article elements */
    .lector-header,
    .breadcrumb,
    .article-header,
    .article-footer,
    .related-articles,
    .reading-progress,
    .pagination,
    nav,
    footer {
        display: none !important;
        visibility: hidden !important;
    }

    /* Collapse grid to single flow */
    .article-content {
        display: block !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    /* Remove card visuals and allow full content */
    .article-reader {
        background: transparent !important;
        border: 0 !important;
        box-shadow: none !important;
        padding: 0 !important;
        max-height: none !important;
        overflow: visible !important;
    }

    /* Show only the article body within the reader */
    .article-reader > *:not(.article-body) {
        display: none !important;
        visibility: hidden !important;
    }

    .article-body {
        display: block !important;
        visibility: visible !important;
    }

    /* Optional: neutralize syllabus dark background for print readability */
    .article-body .syllabus {
        background: transparent !important;
        border-color: #ddd !important;
    }
}

/* ================================================
   ABOUT PAGE STYLES
   ================================================ */

.about-page {
    min-height: 80vh;
    padding: 2rem 0;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.about-sections {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-section {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: var(--shadow-soft);
}

.about-section h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.about-section h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.about-section p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.research-area {
    background: var(--background-secondary);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.research-area h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.research-area p {
    color: var(--text-secondary);
    margin-bottom: 0;
    font-size: 0.95rem;
}

.review-process {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    text-align: center;
    min-width: 200px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.process-step h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.process-step p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.open-access-benefits {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.benefit {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--background-secondary);
    border-radius: 8px;
}

.benefit-icon {
    font-size: 1.5rem;
    margin-top: 0.2rem;
}

.benefit strong {
    color: var(--text-primary);
}

.researcher-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}