.footer {
    color: var(--default-color);
    background-color: var(--background-color);
    border-top: 1px solid 
color-mix(in srgb, var(--primary), transparent 80%);
    font-size: 14px;
    padding-bottom: 50px;
    position: relative;
}

.footer .footer-top {
    padding-top: 50px;
}

.footer .footer-about .logo {
    line-height: 1;
    margin-bottom: 25px;
}

.footer .logo img {
    width: 120px;
}

.footer .footer-about .logo span {
    color: var(--heading-color);
    font-size: 30px;
    font-weight: 700;
    letter-spacing: 1px;
    font-family: var(--heading-font);
}

.footer .footer-about p {
    font-size: 14px;
    font-family: var(--heading-font);
}

.footer .footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer .social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 4px;
    border: 1px solid 
color-mix(in srgb, var(--primary), transparent 50%);
    font-size: 16px;
    color: var(--primary);
    margin-right: 10px;
    transition: 0.3s;
}

.footer .footer-links {
    margin-bottom: 30px;
}

.footer h4 {
    font-size: 16px;
    font-weight: bold;
    position: relative;
    padding-bottom: 12px;
}

.footer .footer-contact p {
    margin-bottom: 5px;
}

.footer .copyright{
    border-top: 1px solid 
    color-mix(in srgb, var(--primary), transparent 90%);
}

.footer .back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 3rem;
    height: 3rem;
    background-color: var(--primary);
    box-shadow: 0 0.6em 1em 0.2em rgba(32, 173, 228, 0.2);
    transform: translateY(0%);
    transition: ease-out 300ms;
    transition-property: transform, background-color, box-shadow opacity;
    opacity: 0;
}

.footer .back-to-top i {
    color: #fff;
}

.back-to-top i {
    -webkit-animation: slide-top-up 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite alternate-reverse both;
    animation: slide-top-up 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite alternate-reverse both;
}

.footer .back-to-top.active {
    opacity: 1;
    cursor: pointer;
}

@keyframes slide-top-up {
    0% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    100% {
        -webkit-transform: translateY(-15px);
        transform: translateY(-10px);
    }
}