.footer {
    background-color: var(--color-surface);
    color: var(--color-text-secondary);
    padding: 4rem 0 2rem 0;
    border-top: 1px solid var(--color-border);
}

.footer__main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2.5rem;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.footer__column--brand {
    padding-right: 2rem;
}

.footer__logo {
    display: inline-block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text-primary);
    text-decoration: none;
    margin-bottom: 1rem;
}

.footer__tagline {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer__socials {
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-surface-light);
    color: var(--color-text-secondary);
    border-radius: 50%;
    transition: all var(--transition);
}
.social-icon:hover {
    background-color: var(--color-primary);
    color: var(--color-background);
    transform: translateY(-3px);
}
.social-icon svg {
    width: 20px;
    height: 20px;
}

.footer__heading {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer__list {
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.footer__link {
    color: var(--color-text-secondary);
    text-decoration: none;
    position: relative;
}
.footer__link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--color-primary);
    transition: width var(--transition);
}
.footer__link:hover {
    color: var(--color-primary);
}
.footer__link:hover::after {
    width: 100%;
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .footer__main {
        grid-template-columns: 1fr 1fr;
    }
    .footer__column--brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 576px) {
    .footer {
        padding: 3rem 0 1.5rem 0;
    }

    .footer__main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer__column {
        text-align: center;
    }

    .footer__column--brand {
        padding-right: 0;
    }

    .footer__socials {
        justify-content: center;
    }

    .footer__link::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer__bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}