#scrollTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #00bcd4;
    color: #0a0a0a;
    border: none;
    padding: 10px 15px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    transition: background 0.3s;
    z-index: 1000;
}
#scrollTop:hover {
    background: #0097a7;
}