.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
    color: #fff;
}

.whatsapp-float:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 3px;
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
}

@keyframes whatsapp-pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4), 0 0 0 12px rgba(37, 211, 102, 0); }
}

@media (max-width: 600px) {
    .whatsapp-float {
        width: 52px;
        height: 52px;
        bottom: 16px;
        right: 16px;
    }
    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .whatsapp-float { animation: none; }
}