.category-buttons-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.category-buttons {
    display: flex;
    gap: 10px;
}

.upload-btn {
    cursor: pointer;
    transition: color 0.3s ease;
    margin-top: -35px;
}

.upload-btn:hover {
    color: #4CAF50;
}

.delete-book {
    cursor: pointer;
    transition: fill 0.3s ease;
}

.delete-book:hover {
    fill: #ff0000;
}

#loader {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 20px;
    border-radius: 5px;
    z-index: 1000;
}

.search-container {
    display: flex;
    align-items: center;
    margin-left: 10px;
    margin-top: -35px;
}

#search-input {
    padding: 5px;
    margin-right: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#search-btn {
    padding: 5px 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#search-btn:hover {
    background-color: #45a049;
}