/* =============================================
   华年集 · 页脚样式
   Footer - HuaNianJi
   ============================================= */

.footer {
  background: var(--color-deep-black);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-16) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-cloud-blue), transparent);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

/* 品牌区 */
.footer__brand {}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__logo-img {
  height: 48px;
  filter: drop-shadow(0 0 8px rgba(58, 143, 212, 0.3));
}

.footer__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.15em;
}

.footer__slogan {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  max-width: 280px;
}

.footer__socials {
  display: flex;
  gap: var(--space-3);
}

.footer__social-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-surface-dark);
  border: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  transition: all var(--ease-fast);
  text-decoration: none;
}

.footer__social-btn:hover {
  background: var(--color-surface-light);
  border-color: var(--color-border-normal);
  color: var(--color-cloud-blue-2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(58, 143, 212, 0.2);
}

/* 小红书 SVG 图标 */
.footer__xhs-icon {
  width: 18px;
  height: 18px;
}

/* 链接列 */
.footer__col-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  letter-spacing: 0.1em;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--ease-fast);
  letter-spacing: 0.05em;
}

.footer__link:hover {
  color: var(--color-cloud-blue-2);
}

/* 底部版权 */
.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.footer__icp {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.footer__icp a {
  color: var(--color-text-muted);
  transition: color var(--ease-fast);
}

.footer__icp a:hover {
  color: var(--color-cloud-blue-2);
}

/* 响应式 */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 640px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}