/* Footer */
.site-footer {
  background-color: var(--color-surface);
  color: var(--color-text);
  padding: 80px 40px 40px;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: opacity 0.6s ease-out;
}

.footer-nav a:hover {
  opacity: 0.7;
}

.footer-sns {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 40px;
}

.footer-sns a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 10px;
  color: var(--color-muted);
  background-color: var(--color-background);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: color 0.6s ease-out, box-shadow 0.6s ease-out;
}

.footer-sns a:hover {
  color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.footer-sns svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.footer-copyright {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.04em;
  opacity: 0.7;
}

@media (max-width: 992px) {
  .site-footer {
    padding: 60px 20px 30px;
  }

  .footer-nav {
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
  }

  .footer-sns {
    margin-bottom: 30px;
  }
}