#mfb-player {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    text-align: center;
}

/* Botón corazón */
#mfb-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: #c79b5a;
    color: #fff;
    font-size: 26px;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0,0,0,.25);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform .2s ease, opacity .3s ease;
}

/* Latido SOLO cuando hay música */
.mfb-playing {
    animation: mfb-heartbeat 1.2s infinite;
}

/* Mensaje sutil */
#mfb-hint {
    margin-top: 6px;
    font-size: 12px;
    color: #a08b62;
    opacity: 0.9;
    transition: opacity .5s ease;
}

/* Ocultar mensaje */
#mfb-hint.mfb-hide {
    opacity: 0;
    pointer-events: none;
}

/* Animación latido */
@keyframes mfb-heartbeat {
    0%   { transform: scale(1); }
    25%  { transform: scale(1.15); }
    40%  { transform: scale(1); }
    60%  { transform: scale(1.15); }
    100% { transform: scale(1); }
}

#mfb-toggle img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    pointer-events: none;
}