/* ========================================
   底部页脚样式
   ======================================== */

.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  margin-top: var(--space-16);
}

.footer-main {
  padding: var(--space-12) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-8);
}

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

.footer-brand p {
  font-size: var(--text-sm);
  opacity: 0.7;
  line-height: 1.8;
  max-width: 280px;
}

.footer-section h4 {
  color: var(--color-accent-light);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
  letter-spacing: 1px;
}

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

.footer-section ul li a {
  color: var(--color-text-inverse);
  opacity: 0.6;
  font-size: var(--text-sm);
  transition: opacity var(--transition-fast);
}

.footer-section ul li a:hover {
  opacity: 1;
  color: var(--color-accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: var(--space-6) 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  opacity: 0.5;
}

.footer-bottom a {
  color: var(--color-text-inverse);
  margin-left: var(--space-4);
}

.footer-bottom a:hover {
  opacity: 0.8;
}

/* 友情链接 */
.footer-links {
  padding: var(--space-4) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-links .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
}

.footer-links span {
  opacity: 0.4;
}

.footer-links a {
  color: var(--color-text-inverse);
  opacity: 0.4;
}

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

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-bottom .container {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }
}