/* ========================================
   FOOTER
   ======================================== */
.site-footer {
    background: var(--nxt-dark);
    color: var(--nxt-white);
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--nxt-blue-500), var(--nxt-red-500), transparent);
}

.footer-cta {
    padding: var(--space-16) 0;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
}

.footer-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.footer-cta h2 {
    color: var(--nxt-white);
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.footer-cta p {
    color: var(--nxt-gray-400);
    font-size: var(--text-lg);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.footer-cta-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* Footer Main */
.footer-main {
    padding: var(--space-16) 0;
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: var(--space-10);
}

.footer-brand {
    padding-right: var(--space-8);
}

.footer-brand .site-logo {
    margin-bottom: var(--space-4);
}

.footer-brand-desc {
    font-size: var(--text-sm);
    color: var(--nxt-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    font-size: var(--text-sm);
    color: var(--nxt-gray-400);
}

.footer-contact-item svg {
    width: 18px;
    height: 18px;
    min-width: 18px;
    color: var(--nxt-blue-400);
    margin-top: 2px;
}

.footer-contact-item a {
    color: var(--nxt-gray-400);
    transition: color var(--transition-fast);
}

.footer-contact-item a:hover {
    color: var(--nxt-blue-400);
}

/* Footer Columns */
.footer-col h4 {
    color: var(--nxt-white);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-6);
    position: relative;
    padding-bottom: var(--space-3);
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, var(--nxt-blue-500), var(--nxt-red-500));
    border-radius: 2px;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--nxt-gray-400);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.footer-links a:hover {
    color: var(--nxt-blue-400);
    transform: translateX(4px);
}

.footer-links a::before {
    content: '';
    width: 0;
    height: 1px;
    background: var(--nxt-blue-400);
    transition: width var(--transition-fast);
}

.footer-links a:hover::before {
    width: 12px;
}

/* Footer Bottom */
.footer-bottom {
    padding: var(--space-6) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--nxt-gray-500);
}

.footer-copyright a {
    color: var(--nxt-blue-400);
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.footer-bottom-links a {
    font-size: var(--text-sm);
    color: var(--nxt-gray-500);
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--nxt-blue-400);
}

.footer-social {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--nxt-gray-400);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--nxt-blue-600);
    border-color: var(--nxt-blue-600);
    color: var(--nxt-white);
    transform: translateY(-2px);
}

/* Footer Responsive (bp-lg: 1024, bp-md: 768, bp-sm: 480) */
@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-brand {
        grid-column: 1 / -1;
        padding-right: 0;
    }
}

@media (max-width: 768px) {
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }
    .footer-cta h2 {
        font-size: var(--text-2xl);
    }
    .footer-cta-actions .btn {
        min-height: 44px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-links a {
        min-height: 44px;
        align-items: center;
    }
    .footer-social a {
        min-width: 44px;
        min-height: 44px;
    }
}

@media (max-width: 480px) {
    .footer-main {
        grid-template-columns: 1fr;
    }
}