/* Enhanced Blog Section with Research Paper Support */

.blog-card.featured-paper {
    position: relative;
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(123, 92, 255, 0.1) 100%);
    border: 2px solid var(--accent-primary);
}

.paper-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--accent-primary);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 4px;
}

.paper-badge i {
    font-size: 0.7rem;
}

.paper-meta {
    display: flex;
    gap: 10px;
    margin: 10px 0;
    font-size: 0.85rem;
}

.paper-type {
    background: var(--accent-secondary);
    color: var(--text-primary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.paper-date {
    color: var(--text-secondary);
    font-weight: 500;
}

.paper-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.paper-actions .read-more {
    flex: 1;
    text-align: center;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: all var(--transition-fast);
}

.paper-link {
    background: var(--accent-primary);
    color: var(--text-primary) !important;
}

.paper-link:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

.blog-link {
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary) !important;
}

.blog-link:hover {
    background: var(--accent-primary);
    color: var(--text-primary) !important;
}

/* Blog Upload Interface */
.blog-upload-section {
    background: var(--card-bg);
    border: 2px dashed var(--accent-primary);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 30px;
    text-align: center;
    transition: all var(--transition-normal);
}

.blog-upload-section:hover {
    border-color: var(--accent-secondary);
    background: rgba(123, 92, 255, 0.05);
}

.upload-area {
    max-width: 500px;
    margin: 0 auto;
}

.upload-area h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.upload-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.upload-btn {
    background: var(--accent-primary);
    color: var(--text-primary);
    border: none;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.upload-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.upload-btn i {
    font-size: 1rem;
}

/* Blog Management */
.blog-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 15px;
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

/* No Posts Message */
.no-posts-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    background: rgba(123, 92, 255, 0.05);
    border: 2px dashed var(--accent-primary);
    border-radius: var(--radius-lg);
    margin: 20px 0;
}

.no-posts-content {
    max-width: 400px;
    margin: 0 auto;
}

/* Hide no-posts message when blog posts exist */
.blog-grid:not(:has(.blog-card)) .no-posts-message {
    display: block;
}

.blog-grid:has(.blog-card) .no-posts-message {
    display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .paper-actions {
        flex-direction: column;
    }
    
    .upload-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .upload-btn {
        width: 100%;
        max-width: 250px;
    }
    
    .blog-stats {
        justify-content: center;
    }
    
    .no-posts-message {
        padding: 40px 15px;
    }
}