.button {
    position: fixed;
    bottom: 3rem;
    right: 3rem;
    width: 55px;
    height: 55px;
    background-color: var(--secondary);
    border: 1px solid var(--border);
    border-radius: 4px; /* Industrial squared-off look */
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: background-color 0.3s, border-color 0.3s;
}

.button:hover {
    border-color: var(--primary);
}

.progressRing {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid transparent;
    pointer-events: none;
    opacity: 0.1;
}

@media (max-width: 768px) {
    .button {
        bottom: 2rem;
        right: 2rem;
        width: 45px;
        height: 45px;
    }
}
