/* Mismo tamaño y posición base que .back-to-top (50x50px, right:30px)
   Se separa colocándolo 20px por encima del back-to-top:
   back-to-top ocupa bottom:30px + 50px altura = 80px → WhatsApp: bottom: 100px */
.whatsapp-float {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    line-height: 50px;
    background-color: #25D366;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    text-decoration: none;
    transition: all 0.4s ease-in-out;
}
.whatsapp-float:hover {
    background-color: #1ebe5d;
}
.whatsapp-float i {
    color: #fff;
    font-size: 22px;
    line-height: 1;
}
.whatsapp-float .wa-tooltip {
    position: absolute;
    right: 60px;
    background: #fff;
    color: #333;
    padding: 5px 10px;
    border-radius: 6px;
    white-space: nowrap;
    font-size: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.whatsapp-float:hover .wa-tooltip {
    opacity: 1;
}