/* LichtKunstLicht风格页脚 */
footer {
  background-color: #000;
  color: #fff;
  position: relative;
  padding: 0;
  z-index: 1;
  overflow: hidden;
  opacity: 0;
  animation: footerFadeIn 0.5s ease-out forwards;
  animation-delay: 0.3s;
}

@keyframes footerFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding: 3.5rem 4rem 3rem;
  position: relative;
}

.footer-logo {
  grid-column: 1 / -1;
  margin-bottom: 2rem;
  position: relative;
}

.footer-logo img {
  height: 36px;
  width: auto;
  display: block;
}

.footer-company {
  position: relative;
}

.footer-company h3 {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 1.2rem;
  color: #f4821f;
  text-transform: uppercase;
}

.footer-address {
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contacts {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-contact-item {
  position: relative;
  display: flex;
  align-items: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s ease;
}

.footer-contact-item:hover {
  color: #f4821f;
  transform: translateX(5px);
}

.footer-nav {
  position: relative;
}

.footer-nav-title {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 1.2rem;
  color: #f4821f;
  text-transform: uppercase;
}

.footer-nav-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.7rem 2rem;
}

.footer-nav-link {
  position: relative;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  padding: 0.2rem 0;
  transition: all 0.3s ease;
  overflow: hidden;
}

.footer-nav-link:hover {
  color: #fff;
  transform: translateX(5px);
}

.footer-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #f4821f;
  transition: width 0.3s ease;
}

.footer-nav-link:hover::after {
  width: 100%;
}

.footer-bottom {
  position: relative;
  padding: 1.5rem 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: 60px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-policy {
  display: flex;
  gap: 1.5rem;
}

.footer-policy-link {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
  position: relative;
}

.footer-policy-link:hover {
  color: #f4821f;
}

.footer-policy-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #f4821f;
  transition: width 0.3s ease;
}

.footer-policy-link:hover::after {
  width: 100%;
}

.footer-social {
  display: flex;
  gap: 1rem;
  margin-right: 80px;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.footer-social-link img {
  width: 18px;
  height: 18px;
  filter: invert(100%);
  opacity: 0.7;
  transition: all 0.3s ease;
}

.footer-social-link:hover {
  background-color: #f4821f;
  transform: translateY(-5px);
}

.footer-social-link:hover img {
  opacity: 1;
  filter: brightness(0) invert(1);
}

/* 装饰元素 */
.footer-decoration {
  position: absolute;
  z-index: -1;
}

.footer-decoration-1 {
  top: 20%;
  left: -100px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 130, 31, 0.15) 0%, transparent 70%);
  filter: blur(40px);
}

.footer-decoration-2 {
  bottom: 10%;
  right: -80px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 193, 233, 0.1) 0%, transparent 70%);
  filter: blur(35px);
}

.footer-decoration-dots {
  width: 130px;
  height: 130px;
  background-image: radial-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 12px 12px;
  top: 30%;
  right: 10%;
  opacity: 0.3;
  transform: rotate(15deg);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 3rem 2rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
  }
  
  .footer-bottom-left {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    margin-left: 0;
  }
  
  .footer-social {
    margin-right: 0;
  }
}

/* 优化移动端显示 */
@media (max-width: 768px) {
  .footer-content {
    padding: 2.5rem 1.5rem 2rem;
    gap: 2rem;
  }
  
  .footer-nav-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 1.5rem;
  }
  
  .footer-bottom {
    padding: 1.5rem;
    align-items: center;
    text-align: center;
  }
  
  .footer-bottom-left {
    width: 100%;
    align-items: center;
    text-align: center;
  }
  
  .footer-policy {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  
  .footer-social {
    margin-top: 0.5rem;
    justify-content: center;
  }
  
  .footer-contact-item {
    justify-content: flex-start;
    padding: 0.5rem 0;
  }
  
  .footer-nav-link {
    padding: 0.5rem 0;
  }
  
  /* 增强移动端的触摸交互区域 */
  .footer-nav-link, 
  .footer-contact-item,
  .footer-policy-link {
    display: inline-block;
    padding: 0.5rem 0;
  }
  
  .footer-social-link {
    width: 42px;
    height: 42px;
  }
  
  .footer-social-link img {
    width: 20px;
    height: 20px;
  }
  
  /* 移动端触摸反馈优化 */
  .footer-contact-item:active,
  .footer-nav-link:active,
  .footer-policy-link:active {
    background-color: rgba(244, 130, 31, 0.1);
    color: #f4821f;
    border-radius: 4px;
  }
  
  /* 添加移动端的波纹效果 */
  .footer-contact-item::after,
  .footer-nav-link::after,
  .footer-policy-link::after {
    content: '';
    position: absolute;
    background: radial-gradient(circle, rgba(244, 130, 31, 0.3) 0%, rgba(244, 130, 31, 0) 70%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    opacity: 0;
    transform: scale(1);
    top: 50%;
    left: 50%;
    pointer-events: none;
  }
  
  .footer-contact-item:active::after,
  .footer-nav-link:active::after,
  .footer-policy-link:active::after {
    opacity: 1;
    width: 300px;
    height: 300px;
    margin-left: -150px;
    margin-top: -150px;
    transform: scale(0);
    transition: all 0.5s ease-out;
  }
}

@media (max-width: 576px) {
  .footer-content {
    padding: 2rem 1.2rem 1.5rem;
  }
  
  .footer-company h3,
  .footer-nav-title {
    font-size: 1rem;
    margin-bottom: 1rem;
  }
  
  .footer-nav-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem 0.6rem;
    width: 100%;
  }
  
  .footer-nav-link {
    font-size: 0.85rem;
    text-align: center;
    padding: 0.6rem 0.2rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    height: 100%;
    min-height: 40px;
  }
  
  .footer-nav-link:hover,
  .footer-nav-link:active {
    background-color: rgba(244, 130, 31, 0.15);
    transform: none;
  }
  
  .footer-nav-link::after {
    display: none;
  }
  
  .footer-address {
    font-size: 0.85rem;
    margin-bottom: 1.2rem;
  }
  
  .footer-contacts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
    margin-top: 1rem;
  }
  
  .footer-contact-item {
    font-size: 0.85rem;
    text-align: center;
    padding: 0.6rem 0.4rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    min-height: 40px;
  }
  
  .footer-contact-item:hover,
  .footer-contact-item:active {
    background-color: rgba(244, 130, 31, 0.15);
    transform: none;
  }
  
  .footer-policy-link {
    font-size: 0.75rem;
  }
  
  .footer-social {
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 1rem;
  }
  
  .footer-social-link {
    width: 45px;
    height: 45px;
    margin-bottom: 0;
    background-color: rgba(255, 255, 255, 0.05);
  }
  
  .footer-social-link:active {
    background-color: rgba(244, 130, 31, 0.7);
    transform: none;
  }
  
  .footer-social-link img {
    width: 22px;
    height: 22px;
  }
  
  .footer-copyright {
    font-size: 0.75rem;
    width: 100%;
    text-align: center;
  }
  
  .footer-policy-link {
    font-size: 0.75rem;
  }
  
  .footer-bottom {
    padding: 1.2rem 1rem 1.5rem;
    background-color: rgba(0, 0, 0, 0.2);
  }
  
  .footer-copyright {
    font-size: 0.75rem;
    width: 100%;
    text-align: center;
    padding: 0.5rem 0;
  }
  
  .footer-policy {
    padding: 0.5rem 0;
  }
  
  .footer-policy-link {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
  }
  
  .footer-policy-link:active {
    background-color: rgba(244, 130, 31, 0.15);
  }
  
  /* 修复移动端的波纹效果 */
  .footer-contact-item,
  .footer-nav-link,
  .footer-policy-link,
  .footer-social-link {
    position: relative;
    overflow: hidden;
  }
  
  /* 为按下状态添加反馈 */
  .footer-nav-link:active,
  .footer-contact-item:active,
  .footer-policy-link:active,
  .footer-social-link:active {
    opacity: 0.9;
    transform: scale(0.98);
    transition: all 0.1s ease;
  }
}