@keyframes whatsapp-pulse {
    0% {
        transform: translateX(-50%) scale(1);
        box-shadow: 0 0 0 0 rgba(37,211,102,0.7);
    }
    50% {
        transform: translateX(-50%) scale(1.1);
    }
    100% {
        transform: translateX(-50%) scale(1);
        box-shadow: 0 0 0 20px rgba(37,211,102,0);
    }
}

@keyframes shake {
    0% { transform: translateX(-50%) translateX(0); }
    25% { transform: translateX(-50%) translateX(-4px); }
    50% { transform: translateX(-50%) translateX(4px); }
    75% { transform: translateX(-50%) translateX(-4px); }
    100% { transform: translateX(-50%) translateX(0); }
}

.whatsapp-float-bottom {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #25D366;
    color: #fff;
    padding: 16px 24px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-family: Arial, sans-serif;
    font-size: 15px;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
    z-index: 9999;
    animation: whatsapp-pulse 2s infinite;
    transition: all 0.3s ease;
}

.whatsapp-float-bottom.show {
    display: flex;
}

.whatsapp-float-bottom.shake {
    animation: shake 0.4s;
}

.whatsapp-float-bottom:hover {
    background: #2ee676;
    transform: translateX(-50%) scale(1.1);
}

.counter {
    font-size: 12px;
    background: rgba(0,0,0,0.25);
    padding: 4px 10px;
    border-radius: 20px;
}

.live-users {
    font-size: 11px;
    background: rgba(0,0,0,0.35);
    padding: 4px 10px;
    border-radius: 20px;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .whatsapp-float-bottom {
        width: 90%;
        font-size: 14px;
        padding: 14px;
    }
}