.wpp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #3B82F6; /* azul do site — troque por #25D366 se quiser o verde do WhatsApp */
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}
.wpp-float svg {
    width: 32px;
    height: 32px;
    position: relative;
    z-index: 2;
}
.wpp-float:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.55);
}
.wpp-float:active {
    transform: translateY(-1px) scale(1.0);
}
/* anel pulsante sutil para chamar atenção */
.wpp-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: #3B82F6;
    z-index: 1;
    animation: wpp-ping 2.4s cubic-bezier(0, 0, 0.2, 1) infinite;
}
@keyframes wpp-ping {
    0%   { transform: scale(1);   opacity: 0.5; }
    70%  { transform: scale(1.7); opacity: 0;   }
    100% { transform: scale(1.7); opacity: 0;   }
}
/* mobile: um pouco menor e mais perto do canto */
@media (max-width: 560px) {
    .wpp-float { width: 54px; height: 54px; bottom: 18px; right: 18px; }
    .wpp-float svg { width: 28px; height: 28px; }
}
/* respeita quem desativa animação */
@media (prefers-reduced-motion: reduce) {
    .wpp-pulse { animation: none; opacity: 0; }
    .wpp-float { transition: none; }
}