html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    color: #fff;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}


#jbButton {
    padding: 18px 36px;        
    font-size: 1.2rem;
    font-weight: bold;
    color: #fff;
    background-color: #000;
    border: 3px solid #fff;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.4s, transform 0.2s;
    max-width: 90vw;           
    margin-bottom: 32px;
}

#jbButton.clicked {
    background-color: #fff;
    color: #000;
    box-shadow: 0 0 18px 6px rgba(255,255,255,0.7),
                0 0 30px 12px rgba(255,255,255,0.35);
    border-radius: 18px;
    transform: scale(1.05);
}

#jbButton.disabled {
    background-color: #000;
    color: #777;
    border-color: #777;
    cursor: not-allowed;
}

.info-link {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    transition: text-shadow 0.3s;
}

.info-link:hover, .info-link:active {
    text-shadow: 0 0 16px rgba(255,255,255,0.9),
                 0 0 24px rgba(255,255,255,0.6);
}


@media (min-width: 769px) {
    .collapser {
        width: 600px;
        font-size: 1.3rem;
        padding: 22px;
    }
}

@media (max-width: 768px) {
    .collapser {
        width: 95%;
        font-size: 1rem;
        padding: 16px;
    }
}