/* ======================
   Research Project Styles
   ====================== */

.research-header {
    padding: 120px 0 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.research-header .back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: white;
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.research-header .back-link:hover {
    opacity: 1;
}

.research-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.research-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.research-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    opacity: 0.9;
}

.status-badge {
    padding: 0.375rem 0.75rem;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
}

.status-badge.current {
    background-color: #10b981;
}

.research-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.research-actions .btn {
    color: white;
}

.research-actions .btn-secondary {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: white;
}

.research-actions .btn-secondary:hover {
    background-color: white;
    color: var(--primary-color);
}

/* Research Content */
.research-content {
    padding: var(--spacing-3xl) 0;
}

.research-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-3xl);
}

.content-section {
    margin-bottom: var(--spacing-3xl);
}

.content-section h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
}

.content-section h2 i {
    color: var(--primary-color);
}

.content-section h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.content-section h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.content-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.content-section ul,
.content-section ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.content-section li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.abstract {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--text-primary);
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
}

.methodology-list {
    counter-reset: methodology;
    list-style: none;
    margin-left: 0;
}

.methodology-list li {
    counter-increment: methodology;
    padding-left: var(--spacing-xl);
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.methodology-list li::before {
    content: counter(methodology);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* Contributions Grid */
.contributions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contribution-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

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

.contribution-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.contribution-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.contribution-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Figure */
.figure {
    margin: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.figure img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.figure-caption {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Results Table */
.results-table {
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.results-table table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.results-table th,
.results-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.results-table th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
}

.results-table td {
    color: var(--text-secondary);
}

.results-table .speedup {
    color: #10b981;
    font-weight: 600;
}

/* Highlight Box */
.highlight-box {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border-left: 4px solid #f59e0b;
    border-radius: var(--radius-md);
}

body.dark-mode .highlight-box {
    background: linear-gradient(135deg, #78350f, #92400e);
    border-left-color: #fbbf24;
}

.highlight-box i {
    font-size: 1.5rem;
    color: #f59e0b;
}

body.dark-mode .highlight-box i {
    color: #fbbf24;
}

/* Publications */
.publication-item {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.publication-citation {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.publication-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.pub-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

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

/* Code Resources */
.code-resources {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.resource-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
}

.resource-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.resource-card h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.resource-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

/* PDF Viewer */
.pdf-viewer-container {
    margin-top: var(--spacing-lg);
}

.pdf-toolbar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    flex-wrap: wrap;
}

.pdf-btn {
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.pdf-page-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.pdf-canvas-container {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-lg);
    overflow: auto;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    text-align: center;
}

#pdf-canvas {
    max-width: 100%;
    height: auto;
    box-shadow: var(--shadow-lg);
}

.pdf-note {
    margin-top: var(--spacing-md);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Sidebar */
.research-sidebar {
    position: sticky;
    top: 90px;
    height: fit-content;
}

.sidebar-section {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.sidebar-section h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.quick-links {
    list-style: none;
    margin: 0;
}

.quick-links li {
    margin-bottom: var(--spacing-sm);
}

.quick-links a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.quick-links a:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

.info-list {
    display: grid;
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.info-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    color: var(--text-primary);
}

.badge-current {
    padding: 0.25rem 0.5rem;
    background-color: #10b981;
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.team-list {
    display: grid;
    gap: var(--spacing-md);
}

.team-member {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.team-member span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.related-projects {
    display: grid;
    gap: var(--spacing-sm);
}

.related-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.related-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
}

.modal-content {
    position: relative;
    background-color: var(--bg-primary);
    margin: 10% auto;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    max-width: 600px;
    box-shadow: var(--shadow-xl);
}

.modal-close {
    position: absolute;
    right: var(--spacing-lg);
    top: var(--spacing-lg);
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.modal-close:hover {
    color: var(--text-primary);
}

.bibtex-code {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.bibtex-code code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 968px) {
    .research-grid {
        grid-template-columns: 1fr;
    }

    .research-sidebar {
        position: static;
    }

    .research-title {
        font-size: 2rem;
    }

    .research-subtitle {
        font-size: 1rem;
    }

    .contributions-grid {
        grid-template-columns: 1fr;
    }

    .code-resources {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .research-actions {
        width: 100%;
    }

    .research-actions .btn {
        flex: 1;
        justify-content: center;
    }

    .pdf-toolbar {
        flex-direction: column;
    }
}