.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}
.whatsapp-float .wa-btn {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: #25d366;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 8px 22px rgba(37, 211, 102, .45);
    transition: transform .25s ease, box-shadow .25s ease;
    position: relative;
}
.whatsapp-float .wa-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: rgba(37, 211, 102, .55);
    animation: wa-pulse 1.8s infinite;
    z-index: -1;
}
@keyframes wa-pulse {
    0%   { transform: scale(1);   opacity: .8; }
    70%  { transform: scale(1.55); opacity: 0; }
    100% { transform: scale(1.55); opacity: 0; }
}
.whatsapp-float .wa-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 28px rgba(37, 211, 102, .6);
}
.whatsapp-float .wa-label {
    background: #fff;
    color: #1f2937;
    font-size: .85rem;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 30px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .12);
    opacity: 0;
    transform: translateX(10px);
    transition: opacity .25s ease, transform .25s ease;
    pointer-events: none;
    white-space: nowrap;
}
.whatsapp-float:hover .wa-label {
    opacity: 1;
    transform: translateX(0);
}
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 16px;
        right: 16px;
    }
    .whatsapp-float .wa-btn {
        width: 52px;
        height: 52px;
        font-size: 1.7rem;
    }
}