/* ========================================
   Academic Publications Aggregator Styles
   ======================================== */

.academic-publications-container {
    font-family: 'Georgia', 'Times New Roman', serif;
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
    color: #333;
    line-height: 1.6;
}

/* Header */
.publications-header {
    border-bottom: 3px solid #2c5aa0;
    padding-bottom: 20px;
    margin-bottom: 40px;
}

.publications-title {
    font-size: 32px;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0 0 10px 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

.publications-summary {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: #666;
}

.pub-count {
    font-weight: 600;
    color: #2c5aa0;
}

.pub-years {
    color: #666;
}

/* Main Content Layout */
.publications-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 40px;
}

@media (max-width: 1024px) {
    .publications-content {
        grid-template-columns: 1fr;
    }
    
    .publications-sidebar {
        order: -1;
    }
}

/* Publications List */
.publications-list {
    background: #fff;
}

.year-section {
    margin-bottom: 50px;
}

.year-header {
    font-size: 28px;
    font-weight: 700;
    color: #2c5aa0;
    margin: 0 0 25px 0;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 10;
}

.year-publications {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* Individual Publication */
.publication-item {
    padding: 20px;
    background: #fafafa;
    border-left: 4px solid #2c5aa0;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.publication-item:hover {
    background: #f5f5f5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transform: translateX(5px);
}

.publication-authors {
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
    line-height: 1.5;
}

.publication-authors strong {
    font-weight: 700;
    color: #2c5aa0;
}

.publication-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 10px;
    line-height: 1.4;
}

.publication-title a {
    color: #1a1a1a;
    text-decoration: none;
    transition: color 0.2s ease;
}

.publication-title a:hover {
    color: #2c5aa0;
    text-decoration: underline;
}

.publication-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.journal {
    font-style: italic;
    color: #444;
}

.year {
    color: #666;
}

/* Impact Factor Section */
.impact-factor-section {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
}

.impact-factor {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
}

.impact-factor strong {
    font-weight: 700;
    font-size: 13px;
}

.quartile-badge {
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.quartile-q1 {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.quartile-q2 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.quartile-q3 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: white;
}

.quartile-q4 {
    background: linear-gradient(135deg, #a8a8a8 0%, #d0d0d0 100%);
    color: #333;
}

.h-index {
    background: #f0f0f0;
    color: #555;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid #ddd;
}

.source-badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 3px;
    letter-spacing: 0.5px;
}

.source-badge.pubmed {
    background: #e3f2fd;
    color: #1565c0;
}

.source-badge.orcid {
    background: #e8f5e9;
    color: #2e7d32;
}

.source-badge.google {
    background: #fff3e0;
    color: #e65100;
}

.publication-links {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.pub-link {
    font-size: 13px;
    color: #2c5aa0;
    text-decoration: none;
    padding: 4px 12px;
    border: 1px solid #2c5aa0;
    border-radius: 3px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.pub-link:hover {
    background: #2c5aa0;
    color: #fff;
}

/* Sidebar Statistics */
.publications-sidebar {
    position: sticky;
    top: 20px;
    height: fit-content;
}

.statistics-panel {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.stats-title {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 20px 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

.stat-item {
    padding: 15px 0;
    border-bottom: 1px solid #f0f0f0;
}

.stat-item:last-of-type {
    border-bottom: none;
}

.stat-label {
    font-size: 13px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
    font-weight: 500;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: #2c5aa0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

/* Keywords Section */
.keywords-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin: 25px 0 15px 0;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.keywords-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.keyword-tag {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: default;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.keyword-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.keyword-count {
    font-size: 11px;
    opacity: 0.9;
    margin-left: 4px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .academic-publications-container {
        padding: 0 15px;
        margin: 20px auto;
    }
    
    .publications-title {
        font-size: 24px;
    }
    
    .publications-summary {
        flex-direction: column;
        gap: 5px;
    }
    
    .year-header {
        font-size: 22px;
    }
    
    .publication-item {
        padding: 15px;
    }
    
    .publication-title {
        font-size: 16px;
    }
    
    .publication-meta {
        font-size: 13px;
    }
    
    .statistics-panel {
        padding: 20px;
    }
    
    .stat-value {
        font-size: 24px;
    }
}

/* Print Styles */
@media print {
    .academic-publications-container {
        max-width: 100%;
    }
    
    .publications-content {
        grid-template-columns: 1fr;
    }
    
    .publications-sidebar {
        page-break-before: always;
    }
    
    .publication-item {
        page-break-inside: avoid;
        background: #fff;
        border-left: 2px solid #000;
    }
    
    .year-header {
        page-break-after: avoid;
    }
    
    .pub-link {
        border-color: #000;
        color: #000;
    }
}

/* Loading State */
.publications-loading {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.publications-loading::after {
    content: '';
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #2c5aa0;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-top: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Empty State */
.publications-empty {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.publications-empty::before {
    content: '📚';
    display: block;
    font-size: 64px;
    margin-bottom: 20px;
}

/* Accessibility */
.publication-item:focus-within {
    outline: 2px solid #2c5aa0;
    outline-offset: 2px;
}

.pub-link:focus,
.publication-title a:focus {
    outline: 2px solid #2c5aa0;
    outline-offset: 2px;
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    .academic-publications-container {
        color: #e0e0e0;
    }
    
    .publications-header {
        border-bottom-color: #4a7bc8;
    }
    
    .publications-title,
    .year-header,
    .stats-title,
    .keywords-title,
    .publication-title {
        color: #fff;
    }
    
    .publication-item {
        background: #2a2a2a;
        border-left-color: #4a7bc8;
    }
    
    .publication-item:hover {
        background: #333;
    }
    
    .statistics-panel {
        background: #2a2a2a;
        border-color: #444;
    }
    
    .stat-item {
        border-bottom-color: #444;
    }
    
    .publication-title a {
        color: #e0e0e0;
    }
    
    .publication-title a:hover {
        color: #4a7bc8;
    }
}