/* ============================================
   COMPONENT: Footer
   Description: Site footer with brand, nav
   columns, and copyright bar at the very bottom.
   ============================================ */

.footer {
    background-color: var(--color-gray-100);
    padding-top: var(--space-4xl);
}

.footer__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1.5fr 3fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

/* Brand / logo area */
.footer__logo {
    height: 36px;
    width: auto;
    margin-bottom: var(--space-md);
}

.footer__tagline {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    line-height: var(--line-height-relaxed);
}

/* Navigation columns */
.footer__columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.footer__heading {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__link {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-primary);
}

/* Copyright bar */
.footer__copyright {
    border-top: 1px solid var(--color-gray-300);
    padding: var(--space-lg) 0;
    background-color: var(--color-gray-100);
}

.footer__copyright-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.footer__legal {
    display: flex;
    gap: var(--space-lg);
}

.footer__legal-link {
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer__legal-link:hover {
    color: var(--color-primary);
}

/* ----- Mobile Responsive ----- */
@media (max-width: 768px) {
    .footer__container {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer__columns {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__copyright-container {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}