/* ==========================================================================
   FOOTER — Light Theme, Clean Corporate
   ========================================================================== */

.site-footer {
    background-color: #121214;
    color: var(--text-inverse);
    padding: var(--space-2xl) var(--space-md) var(--space-md);
    position: relative;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .footer-container {
        grid-template-columns: 1.35fr 1fr 1fr;
    }
}

.footer-logo-link {
    display: inline-flex;
    width: fit-content;
    border-radius: var(--radius-md);
    transition:
        opacity var(--transition),
        transform var(--transition);
}

.footer-logo-link:hover,
.footer-logo-link:focus-visible {
    opacity: 0.82;
    transform: translateY(-1px);
}

.footer-brand .footer-logo {
    width: 160px;
    margin-bottom: var(--space-sm);
}

.footer-brand .footer-desc {
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
    font-size: var(--text-sm);
    max-width: 280px;
}

.footer-links h3,
.footer-social h3 {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: var(--space-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-icon {
    width: 28px;
    height: 28px;
    transition: opacity var(--transition);
}

.footer-links a:hover .footer-icon {
    opacity: 1;
}

.social-icons {
    display: flex;
    gap: 0.75rem;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: transparent;
    border: transparent;
    transition:
        background var(--transition-smooth),
        border-color var(--transition-smooth),
        transform var(--transition-smooth);
}

.social-icons a img,
.social-icons a svg {
    width: 28px;
    height: 28px;
    transition: opacity var(--transition);
}

.social-icons a:hover {
    filter: brightness(1.5);
}

/* Footer Bottom */
.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.35);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.developer-credit {
    font-weight: 500;
}

.footer-top-link {
    display: inline-flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 0.4rem;
    color: rgba(255, 255, 255, 0.48);
    font-size: var(--text-xs);
    font-weight: 700;
    line-height: 1;
    transition:
        color var(--transition),
        transform var(--transition);
}

.footer-top-arrow {
    width: 0.82rem;
    height: 0.82rem;
    opacity: 0.72;
    filter: invert(1);
    transform: rotate(180deg);
}

.footer-top-link:hover,
.footer-top-link:focus-visible {
    color: var(--primary);
    transform: translateY(-1px);
}

@media (max-width: 767px) {
    .site-footer {
        text-align: center;
    }

    .footer-container {
        justify-items: center;
        gap: var(--space-lg);
    }

    .footer-brand,
    .footer-links,
    .footer-social {
        display: grid;
        justify-items: center;
        width: min(100%, 22rem);
    }

    .footer-brand .footer-logo {
        margin-inline: auto;
    }

    .footer-logo-link {
        justify-content: center;
    }

    .footer-brand .footer-desc {
        max-width: 24ch;
        margin-inline: auto;
    }

    .footer-links ul {
        display: grid;
        justify-items: center;
    }

    .footer-links a {
        justify-content: center;
    }

    .social-icons {
        justify-content: center;
    }
}