footer {
  background: var(--surface-dark);
  border-top: 1px solid var(--border-sub);
  padding: 48px 28px 24px;
}

.footer-inner { max-width: 1100px; margin: 0 auto; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-logo .nav-logo-img { height: 24px; }

.footer-brand p {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 10px;
  max-width: 260px;
  line-height: 1.7;
}

.footer-social-links {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.footer-social-links a {
  color: var(--text-muted);
  font-size: .8rem;
  text-decoration: none;
  transition: color .2s;
}

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

.footer-social-links .sep { color: var(--border-str); }

.footer-col h5 {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-sec);
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .8rem;
  transition: color .2s;
}

.footer-col ul li a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border-sub);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p { font-size: .75rem; color: var(--text-muted); }

.footer-back-top {
  color: var(--text-muted);
  font-size: .8rem;
  text-decoration: none;
  transition: color .2s;
}

.footer-back-top:hover { color: var(--accent); }