/* ==================== FOOTER ==================== */
footer {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
    color: var(--neutral-white);
    padding: var(--spacing-16) 0 var(--spacing-8);
    margin-top: 0;
    border-top: 5px solid var(--primary-teal);
    box-shadow: inset 0 4px 20px rgba(0, 0, 0, 0.4);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(20, 184, 166, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(14, 165, 233, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-10);
    position: relative;
    z-index: 1;
}

.footer-col h4 {
    color: var(--primary-teal-light);
    margin-bottom: var(--spacing-5);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    font-family: var(--font-heading);
    letter-spacing: 0.5px;
}

.footer-col p {
    color: var(--neutral-gray-light);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-3);
}

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

.footer-col li {
    margin-bottom: var(--spacing-2);
}

.footer-col a {
    color: var(--neutral-gray-light);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: var(--font-size-base);
    display: inline-flex;
    align-items: center;
    position: relative;
    padding: 4px 0;
}

.footer-col a::before {
    content: '→';
    opacity: 0;
    margin-right: 0;
    transition: all 0.3s ease;
    transform: translateX(-10px);
    color: var(--primary-teal);
}

.footer-col a:hover {
    color: var(--primary-teal-light);
    padding-left: 18px;
}

.footer-col a:hover::before {
    opacity: 1;
    margin-right: 6px;
    transform: translateX(0);
}

.social-block {
    margin-top: var(--spacing-6);
}

.social-title {
    font-size: var(--font-size-sm);
    color: var(--neutral-gray-light);
    margin-bottom: var(--spacing-3);
    font-weight: var(--font-weight-semibold);
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 15px;
}

.social-link {
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: scale(1.2);
}

.social-link i,
.social-link .fab {
    font-size: 32px;
    color: #ffffff !important;
}

.social-link:hover i,
.social-link:hover .fab {
    color: #ffffff !important;
}

.contact-icon {
    color: #ffffff !important;
    margin-right: 10px;
}

.footer-bottom {
    border-top: 2px solid var(--neutral-dark-lighter);
    padding-top: var(--spacing-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--neutral-gray-medium);
    font-size: var(--font-size-sm);
}

.footer-bottom-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    text-align: left;
}

.footer-requisites {
    font-size: var(--font-size-sm);
    color: var(--neutral-gray-medium);
    font-weight: var(--font-weight-medium);
}

.payment-system {
    display: flex;
    align-items: center;
    gap: 8px;
}

.payment-label {
    font-size: var(--font-size-sm);
    color: var(--neutral-gray-medium);
    white-space: nowrap;
}

.robokassa-logo {
    display: flex;
    align-items: center;
    height: 24px;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.robokassa-logo svg {
    display: block;
}

.robokassa-logo svg text {
    text-anchor: middle;
    dominant-baseline: middle;
}

.robokassa-logo:hover {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
}