.article-item {
    margin: 10px 0;
    padding: 10px;
    border-radius: 5px;
    background-color: #f8f9fa;
    transition: all 0.3s ease;
}

.article-item:hover {
    background-color: #e9ecef;
    transform: translateX(5px);
}

.article-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
    gap: 10px;
}

.article-id {
    min-width: 30px;
    color: #666;
    font-weight: bold;
}

.article-title {
    flex-grow: 1;
}

.article-category {
    padding: 2px 8px;
    border-radius: 12px;
    background-color: #e2e6ea;
    color: #495057;
    font-size: 0.9em;
}

.category-btn {
    margin: 5px;
    padding: 8px 15px;
    border: none;
    border-radius: 20px;
    background-color: #e9ecef;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-btn:hover {
    background-color: #dee2e6;
}

.category-btn.active {
    background-color: #007bff;
    color: white;
}

#pageInfo {
    margin: 20px 0;
    text-align: center;
    color: #666;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}