/* Botão WhatsApp */
    .whatsapp-btn {
        position: fixed;
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        background-color: var(--color-whatsapp);
        color: var(--text-primary);
        width: 50px;
        height: 50px;
        border-radius: var(--border-radius-lg);
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: var(--font-size-4xl);
        box-shadow: var(--shadow-sm);
        z-index: 1000;
        transition: all 0.3s;
        text-decoration: none;
    }
    
    .whatsapp-btn:hover {
        transform: scale(1.1);
        background-color: var(--color-whatsapp-hover);
    }