/* ========================================
   footer.css - 底部样式
   ======================================== */

.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.8);
  padding-top: 80px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.2fr 2fr 1.3fr;
  gap: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* 左侧公司信息 */
.footer-brand .footer-logo {
  height: 40px;
  margin-bottom: 20px;
  /* 防止图片加载时闪现：默认隐藏 */
  opacity: 0 !important;
  visibility: hidden !important;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* 图片加载完成后才显示 */
.footer-brand .footer-logo.loaded {
  opacity: 1 !important;
  visibility: visible !important;
}

.footer-brand .footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  margin-bottom: 24px;
}

.footer-brand .footer-hotline {
  margin-bottom: 24px;
}

.footer-hotline-label {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}

.footer-hotline-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-light);
  font-family: var(--font-en);
}

/* 中间导航 */
.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.footer-nav-title {
  font-size: 16px;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
}

.footer-nav-list li {
  margin-bottom: 10px;
}

.footer-nav-list a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}

.footer-nav-list a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

/* 右侧联系信息与社交图标 */
.footer-right {
  display: flex;
  flex-direction: column;
  /* align-items: flex-start; 
  justify-content: space-between;*/
  gap: 24px;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  margin-top: 25px;
  gap: 0px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}

.footer-contact-item .contact-label {
  flex-shrink: 0;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}

/* 社交图标区域 */
.footer-social-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-top: 33px;
  margin: 0 0 0 68%;
  gap: 12px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social .social-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.6);
  font-size: 18px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  padding: 0;
}

.footer-social .social-btn:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-3px);
}

/* 公众号二维码悬停弹出 */
.footer-qrcode-popup,
.footer-douyin-popup {
  position: fixed;
  width: 152px;
  text-align: center;
  background: rgba(30,30,30,0.95);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 14px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
  pointer-events: none;
  z-index: 9999;
}

.footer-qrcode-popup.visible,
.footer-douyin-popup.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.footer-qrcode-popup img,
.footer-douyin-popup img {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  background: white;
  padding: 6px;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}

.footer-qrcode-popup p,
.footer-douyin-popup p {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
}

/* 底部版权 */
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright {
  font-size: 15px;
  color: rgba(255,255,255,0.4);
}

.footer-copyright a {
  color: rgba(255,255,255,0.5);
  margin-left: 16px;
}

.footer-copyright a:hover {
  color: var(--primary-light);
}

/* 公安备案 */
.footer-psb-beian {
  margin-left: 16px;
  display: inline-flex;
  align-items: center;
}

.footer-psb-beian img {
  width: 14px;
  height: 14px;
  vertical-align: middle;
  margin-right: 4px;
}

.footer-psb-beian a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  font-size: 15px;
}

.footer-psb-beian a:hover {
  color: var(--primary-light);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.footer-links a:hover {
  color: var(--primary-light);
}

/* 回到顶部 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 900;
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer { padding-top: 2px; }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 0;
  }
  /* 移动端隐藏左侧品牌信息和中间导航 */
  .footer-brand { display: none; }
  .footer-nav { display: none; }
  /* 右侧联系信息靠左，图标靠右 */
  .footer-right {
    flex-direction: column;
    /* align-items: flex-start;
    justify-content: space-between; */
    text-align: left;
  }
  .footer-contact-info {
    flex: 1;
    min-width: 0;
  }
  .footer-contact-item {
    line-height: 2.0;
    font-size: 13px;
  }
  .footer-social-wrapper {
    flex-shrink: 0;
    padding-top: 33px;
    /*margin-left: 68%; 将社交图标推到右侧*/
    margin: 0 0 -70px 68%;
    align-self: flex-start;
  }
  .footer-social {
    flex-direction: row;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .footer-copyright {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .footer-psb-beian {
    margin-left: 0;
    justify-content: center;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}