.footer {
    background: var(--glass-bg);
    backdrop-filter: blur(18px);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
    color: var(--text-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    align-items: start;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-primary);
    text-decoration: none;
}

.footer-logo .logo-icon {
    width: clamp(62px, 8vw, 82px);
    box-shadow: 0 16px 32px rgba(59, 130, 246, 0.22);
}

.footer-logo .logo-text {
    font-size: 1.1rem;
}

.footer-description {
    margin: 0;
    line-height: 1.8;
    color: var(--text-tertiary);
    font-size: 0.92rem;
}

.footer-heading {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1rem;
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a,
.footer-contact a,
.footer-contact span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.92rem;
    transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus,
.footer-contact a:hover,
.footer-contact a:focus {
    color: var(--primary-light);
    transform: translateX(4px);
}

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

.footer-social__link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.75rem;
    border-radius: var(--radius-md);
    background: var(--surface-muted);
    color: var(--primary-light);
    font-size: 0.88rem;
    transition: transform 0.2s ease, background 0.2s ease;
}

.footer-social__link:hover,
.footer-social__link:focus {
    transform: translateY(-2px);
    background: var(--surface-card-hover);
}

.footer-certificates {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-certificates__items {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-certificates__items a {
    display: block;
    line-height: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.footer-certificates__items a:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

.footer-certificates__items img {
    display: block;
    height: 75px;
    width: auto;
}

.footer-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.footer-bottom__links {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-bottom__links a {
    color: inherit;
    transition: color 0.2s ease;
}

.footer-bottom__links a:hover,
.footer-bottom__links a:focus {
    color: var(--primary-light);
}

.footer-bottom .separator {
    display: inline-block;
    width: 4px;
    height: 4px;
    border-radius: 999px;
    background: var(--surface-border);
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .footer {
        padding: var(--spacing-md) 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-certificates__items {
        gap: 0.75rem;
    }

    .footer-certificates__items img {
        height: 65px;
    }
}