.invalid {
    border: 2px solid red;
}

#serialError {
    color: red;
    margin-top: 5px;
}

#longSNField{
    width: 20vw;
    height: calc(1.5em + 1.25rem + 2px);
    padding: 0.625rem 0.9375rem;
    font-family: "Open Sans", sans-serif;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    color: #525252;
    background-color: #ffffff;
    background-clip: padding-box;
    border: 1px solid #707070;
    border-radius: 0.125rem;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

@media (max-width: 767.98px) {
  #longSNField{
    width: 80% !important;
  }
}

#outputArea{
    font-size: 1.5rem;
}

#outputArea a{
    color: #1F2937;
    font-weight: bold;
    text-decoration: underline;
}

#outputArea a:hover{
  color: #000000 !important;
}

.checkerBtn{
    background-color: #333;
    border: 3px solid #333;
    color: #fff;
    border-radius: 10px;
    height: 1rem !important;
    line-height: 0 !important;
}

.checkerBtn:hover, .checkerBtn:active, .checkerBtn:focus{
    background-color: #333 !important;
    border: 3px solid #333 !important;
    color: #fff !important;
}

.product-card-highlight{
    border: 3px solid var(--primary) !important;
    background: #f7f9fc !important;
}

.product-card-highlight:hover{
    box-shadow: 0px 4px 16px rgba(0, 0, 0, 0.4) !important;
}
    
.product-card-highlight::before{
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 5px 10px;
    border-radius: 6px;
    background: var(--primary);
    color: var(--gray-darker);
    font-weight: 600;

    z-index: 10;
}

html[lang="de"] .product-card-highlight::before {
    content: "★ Ihr richtiges Abo";
}

html[lang="en"] .product-card-highlight::before {
    content: "★ Your correct subscription";
}