/* ✅ 全局修复：防止横向滚动 */
body {
  overflow-x: hidden;
}

/* =========================================
   1. 顶部统计卡片 (Info Cards)
   ========================================= */
.info-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center; /* 居中对齐 */
  margin-bottom: 40px;
}

.info-card {
  flex: 1 1 200px; /* 允许弹性伸缩，最小宽度200px */
  max-width: 250px;
  background: linear-gradient(135deg, #f0f4ff, #e6ecff);
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.info-card h2 {
  font-size: 2em;
  color: #2a4d9b;
  margin-bottom: 5px;
  font-family: 'Google Sans', sans-serif;
}

.info-card p {
  font-size: 1.1em;
  color: #555;
  font-weight: 500;
}

/* =========================================
   2. 器官网格卡片 (Organ Grid Layout)
   ========================================= */
#dataset-distribution {
  padding-bottom: 3rem;
}

.organ-col {
  padding: 10px;
}

.organ-card {
  position: relative;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  overflow: hidden;
  height: 240px; /* 固定高度，确保整齐 */
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: 1px solid #f0f0f0;
  border-top: 3px solid #3273dc; /* 顶部默认蓝条 */
  cursor: default;
}

/* 悬停整体效果 */
.organ-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(50, 115, 220, 0.15);
  border-color: #3273dc;
}

/* --- 核心内容区域 (图标+标题) --- */
.organ-main {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  width: 100%;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); /* 弹性过渡 */
}

.organ-icon {
  height: 72px; /* 图标尺寸 */
  width: auto;
  margin-bottom: 15px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.organ-title {
  font-family: 'Google Sans', sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  color: #363636;
}

/* 悬停时：主内容上移并缩小 */
.organ-card:hover .organ-main {
  top: 30%; 
}
.organ-card:hover .organ-icon {
  transform: scale(0.9);
}

/* --- 详情区域 (悬停滑出) --- */
.organ-details {
  position: absolute;
  bottom: -100%; /* 默认完全隐藏 */
  left: 0;
  width: 100%;
  padding: 15px 20px;
  background: linear-gradient(to top, #ffffff 95%, rgba(255,255,255,0.8));
  opacity: 0;
  transition: all 0.3s ease;
}

/* 悬停时：详情滑入 */
.organ-card:hover .organ-details {
  bottom: 0;
  opacity: 1;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: #666;
  border-bottom: 1px dashed #eee;
  padding-bottom: 4px;
}

.detail-row:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.detail-row i {
  width: 20px;
  text-align: center;
  margin-right: 5px;
  color: #3273dc;
}

.detail-val {
  font-weight: 700;
  color: #2c3e50;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .info-card {
    flex: 1 1 100%; /* 手机端统计卡片占满一行 */
  }
  .organ-card {
    height: 200px; /* 手机端卡片稍微矮一点 */
  }
}