.contact-form-section {
    position: relative;
    border-radius: 12px;
    background: var(--color-depth);
    padding: 2rem;
}

.contact-form-section::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: conic-gradient(from var(--angle, 0deg), 
        transparent 0deg, 
        #40e0d0 90deg, 
        #ffffff 180deg,
        #40e0d0 270deg, 
        transparent 360deg
    );
    border-radius: inherit;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-form-section:hover::before {
    opacity: 1;
}

/* Firefox: Correção para mask-composite */
@-moz-document url-prefix() {
    .contact-form-section::before {
        mask-composite: subtract;
        -webkit-mask-composite: destination-out;
    }
}