:root {
    --root-whatsapp-bg: #000000;
    --root-whatsapp-icon: #c99a18;
    --root-whatsapp-hover: #1a1a1a;
    --root-whatsapp-shadow: rgba(0, 0, 0, 0.3);
    --root-whatsapp-shadow-hover: rgba(201, 154, 24, 0.4);
}

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--root-whatsapp-bg);
    color: var(--root-whatsapp-icon);
    border-radius: 50%;
    text-decoration: none;
    box-shadow: 0 4px 20px var(--root-whatsapp-shadow);
    transition: all 0.3s ease;
    border: 2px solid var(--root-whatsapp-icon);
    position: relative;
    overflow: hidden;
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--root-whatsapp-hover);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.whatsapp-btn:hover::before {
    opacity: 1;
}

.whatsapp-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 30px var(--root-whatsapp-shadow-hover);
}

.whatsapp-btn svg {
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
}

.whatsapp-btn:hover svg {
    transform: scale(1.1);
}

@keyframes whatsapp-pulse {
    0% {
        box-shadow: 0 4px 20px var(--root-whatsapp-shadow), 0 0 0 0 var(--root-whatsapp-icon);
    }
    70% {
        box-shadow: 0 4px 20px var(--root-whatsapp-shadow), 0 0 0 10px rgba(201, 154, 24, 0);
    }
    100% {
        box-shadow: 0 4px 20px var(--root-whatsapp-shadow), 0 0 0 0 rgba(201, 154, 24, 0);
    }
}

.whatsapp-btn {
    animation: whatsapp-pulse 2s infinite;
}

@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
    }
    
    .whatsapp-btn {
        width: 55px;
        height: 55px;
    }
    
    .whatsapp-btn svg {
        width: 22px;
        height: 22px;
    }
}

@media (max-width: 480px) {
    .whatsapp-float {
        bottom: 15px;
        right: 15px;
    }
    
    .whatsapp-btn {
        width: 50px;
        height: 50px;
    }
    
    .whatsapp-btn svg {
        width: 20px;
        height: 20px;
    }
}