/* ════════════════════════════════════
   WHATSAPP KNOP
   ════════════════════════════════════ */

   .whatsapp-knop {
    position: fixed;
    right: 24px;
    bottom: 24px;

    width: 60px;
    height: 60px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: #25D366;
    color: #fff;

    border-radius: 50%;
    text-decoration: none;

    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);

    z-index: 9999;

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        background 0.25s ease;
}

.whatsapp-knop:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.2);
}

.whatsapp-knop:focus-visible {
    outline: 3px solid rgba(37, 211, 102, 0.3);
    outline-offset: 4px;
}

.whatsapp-knop i {
    font-size: 30px;
    color: #fff;
    line-height: 1;
}

/* Subtiele pulse animatie */
.whatsapp-knop::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: rgba(37, 211, 102, 0.35);
    animation: whatsapp-pulse 2.5s infinite;
    z-index: -1;
}

@keyframes whatsapp-pulse {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }

    70% {
        transform: scale(1.4);
        opacity: 0;
    }

    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

/* Mobiel */
@media (max-width: 768px) {
    .whatsapp-knop {
        width: 54px;
        height: 54px;
        right: 16px;
        bottom: 16px;
    }

    .whatsapp-knop i {
        font-size: 26px;
        color: #fff;
    }
}