/* 产品应用页面样式 */

/* 容器样式 */
.application-container {
  max-width: 1200px;
  margin: 50px auto 80px;
  padding: 0 15px;
  position: relative;
}

/* 应用卡片网格 */
.application-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

/* 大卡片占据两个位置 */
.application-card.large {
  grid-column: 1;
  grid-row: 1 / span 2;
}

/* 应用卡片样式 */
.application-card {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.application-card.animated {
  opacity: 1;
  transform: translateY(0);
}

/* 第二张和第三张卡片的延迟动画 */
.application-card:nth-child(2) {
  transition-delay: 0.2s;
}

.application-card:nth-child(3) {
  transition-delay: 0.4s;
}

.application-image {
  width: 100%;
  height: 100%;
  min-height: 305px;
  background-size: cover;
  background-position: center;
  position: relative;
  transition: all 0.5s ease;
}

.large .application-image {
  min-height: 630px;
}

/* 悬停效果 */
.application-card:hover .application-image {
  transform: scale(1.05);
}

/* 卡片内容覆盖层 */
.application-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0); /* 初始状态不显示背景 */
  display: flex;
  flex-direction: column;
  justify-content: center; /* 改为居中显示 */
  align-items: center;
  padding: 30px;
  text-align: center;
  color: #fff;
  transition: background 0.3s ease; /* 添加过渡效果 */
}

/* 鼠标悬停时显示背景蒙版 */
.application-card:hover .application-overlay {
  background: rgba(0,0,0,0.6); /* 修改为均匀的半透明黑色背景 */
}

.application-overlay h2 {
  font-size: 30px;
  font-weight: 300;
  margin-bottom: 16px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
  opacity: 0; /* 初始不显示 */
  transform: translateY(-20px); /* 初始位置偏上，这样动画会从上往下进入中间位置 */
  transition: opacity 0.4s ease, transform 0.4s ease; /* 添加过渡效果 */
}

/* 鼠标悬停时显示标题 */
.application-card:hover .application-overlay h2 {
  opacity: 1;
  transform: translateY(0);
}

.view-more {
  color: #fff;
  font-size: 18px;
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
  opacity: 0; /* 初始不显示 */
  transform: translateY(20px); /* 初始位置偏下，这样动画会从下往上进入中间位置 */
  transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s; /* 添加延迟，使其在标题后显示 */
}

/* 鼠标悬停时显示查看更多按钮 */
.application-card:hover .view-more {
  opacity: 1;
  transform: translateY(0);
}

.view-more:hover {
  color: #66cc33;
}

.view-more:after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #66cc33;
  transition: width 0.3s ease;
}

.view-more:hover:after {
  width: 100%;
}

/* 应用详情部分 */
.application-details {
  margin-top: 60px;
}

.application-detail-header {
  text-align: center;
  margin-bottom: 40px;
}

.application-detail-header h3 {
  font-size: 32px;
  font-weight: 300;
  color: #000;
  margin-bottom: 15px;
}

.application-detail-header p {
  font-size: 16px;
  color: #666;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 详情内容布局 */
.application-detail-content {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 50px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.detail-item.animated {
  opacity: 1;
  transform: translateY(0);
}

.detail-item:nth-child(1) {
  transition-delay: 0.2s;
}

.detail-item:nth-child(2) {
  transition-delay: 0.4s;
}

.detail-image {
  flex: 1;
  max-width: 48%;
}

.detail-image img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.5s ease;
}

.detail-item:hover .detail-image img {
  transform: scale(1.02);
}

.detail-text {
  flex: 1;
  max-width: 48%;
}

.detail-text h4 {
  font-size: 24px;
  font-weight: 300;
  color: #000;
  margin-bottom: 15px;
  position: relative;
  padding-bottom: 10px;
}

.detail-text h4:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: #66cc33;
}

.detail-text p {
  font-size: 16px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
}

.detail-text ul {
  padding-left: 20px;
}

.detail-text li {
  font-size: 16px;
  color: #666;
  margin-bottom: 8px;
  position: relative;
}

.detail-text li:before {
  content: "•";
  color: #66cc33;
  font-weight: bold;
  display: inline-block;
  width: 1em;
  margin-left: -1em;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .application-grid {
    grid-template-columns: 1fr;
  }

  .application-card.large {
    grid-column: auto;
    grid-row: auto;
  }

  .large .application-image {
    min-height: 400px;
  }

  .detail-item {
    flex-direction: column;
    gap: 30px;
  }

  .detail-image, .detail-text {
    max-width: 100%;
  }

  /* 调整详情项顺序，使第二个详情项的图片在下方 */
  .detail-item:nth-child(2) {
    flex-direction: column-reverse;
  }
}

@media (max-width: 768px) {
  .application-container {
    margin: 30px auto 60px;
  }

  .application-overlay h2 {
    font-size: 24px;
  }

  .view-more {
    font-size: 16px;
  }

  .application-detail-header h3 {
    font-size: 28px;
  }

  .application-detail-header p {
    font-size: 14px;
  }

  .detail-text h4 {
    font-size: 20px;
  }

  .detail-text p, .detail-text li {
    font-size: 14px;
  }
}

@media (max-width: 576px) {
  .application-image {
    min-height: 250px;
  }

  .large .application-image {
    min-height: 300px;
  }

  .application-overlay h2 {
    font-size: 20px;
  }

  .view-more {
    font-size: 14px;
  }

  .application-detail-header h3 {
    font-size: 24px;
  }

  .detail-text h4 {
    font-size: 18px;
  }
}