.heatmap-container {
  width: 100%;
  margin: 30px auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  padding: 15px 0;
}

.heatmap-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.heatmap-header h4 {
  margin: 0;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  font-size: 12px;
  color: #767676;
}

.legend-squares {
  display: flex;
  margin: 0 6px;
  padding: 0;
  list-style: none;
}

.legend-square {
  width: 12px;
  height: 12px;
  margin: 0 1px;
}

.legend-square[data-level="0"] {
  background-color: #ebedf0;
}

.legend-square[data-level="1"] {
  background-color: #c6e48b;
}

.legend-square[data-level="2"] {
  background-color: #7bc96f;
}

.legend-square[data-level="3"] {
  background-color: #239a3b;
}

.legend-square[data-level="4"] {
  background-color: #196127;
}

/* 热力图整体容器设置为相对定位，方便内部元素布局 */
.heatmap-wrapper {
  position: relative;
  padding-bottom: 20px;
  padding-top: 5px;
  /* 添加弹性容器，使内容在缩小时保持比例 */
  display: flex;
  flex-direction: column;
  width: 100%;
}

/* 调整月份标签容器为相对定位布局 */
.heatmap-months {
  position: relative;
  padding-left: 0; /* 移除左内边距，因为我们已经在JavaScript中考虑了星期标签宽度 */
  margin-bottom: 10px;
  width: 100%; /* 使用100%宽度 */
  height: 20px; /* 为月份标签提供固定高度 */
}

.heatmap-months span {
  position: absolute;
  font-size: 10px;
  color: #767676;
  white-space: nowrap;
  text-align: center;
}

/* 调整星期标签位置为左侧固定 */
.heatmap-days {
  position: absolute;
  left: 0;
  top: 34px;
  width: 30px;
  /* 设置为弹性容器，使星期标签均匀分布 */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  /* 高度与热力图网格高度一致 */
  height: calc(7 * 14px + 6 * 4px);
}

.heatmap-days span {
  /* 确保每个星期标签占据相同高度 */
  height: 14px;
  line-height: 14px;
  font-size: 10px;
  text-align: center;
  color: #767676;
}

/* 隐藏除了一、三、五以外的星期标签 */
.heatmap-days span:nth-child(1),  /* 日 */
.heatmap-days span:nth-child(3),  /* 二 */
.heatmap-days span:nth-child(5),  /* 四 */
.heatmap-days span:nth-child(7) { /* 六 */
  visibility: hidden;
}

/* 显示一、三、五的标签 */
.heatmap-days span:nth-child(2),  /* 一 */
.heatmap-days span:nth-child(4),  /* 三 */
.heatmap-days span:nth-child(6) { /* 五 */
  visibility: visible;
}

/* 优化热力图网格结构，确保等比例缩放 */
.heatmap-grid {
  margin-left: 30px;
  display: grid;
  grid-template-rows: repeat(7, 14px);
  grid-template-columns: repeat(53, 14px);
  grid-auto-flow: column;
  grid-gap: 4px;
  overflow: visible;
  /* 确保热力图网格宽度适应容器 */
  width: calc(100% - 30px);
}

.heatmap-cell {
  width: 14px;
  height: 14px;
  background-color: #ebedf0;
  border-radius: 2px;
  position: relative;
}

.heatmap-cell[data-level="0"] {
  background-color: #ebedf0;
}

.heatmap-cell[data-level="1"] {
  background-color: #c6e48b;
}

.heatmap-cell[data-level="2"] {
  background-color: #7bc96f;
}

.heatmap-cell[data-level="3"] {
  background-color: #239a3b;
}

.heatmap-cell[data-level="4"] {
  background-color: #196127;
}

.heatmap-tooltip {
  position: absolute;
  transform: translateX(-50%);
  padding: 6px 10px;
  background-color: rgba(0, 0, 0, 0.8);
  color: #fff;
  border-radius: 3px;
  font-size: 12px;
  white-space: nowrap;
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  max-width: 300px;
  text-align: left;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* 根据格子位置调整工具提示方向 */
.heatmap-cell:nth-child(-n+21) .heatmap-tooltip {
  /* 前3行格子的工具提示显示在下方 */
  bottom: auto;
  top: 100%;
  margin-top: 5px;
  margin-bottom: 0;
  left: 50%;
}

.heatmap-cell:nth-child(n+22) .heatmap-tooltip {
  /* 其余格子的工具提示显示在上方 */
  bottom: 100%;
  top: auto;
  margin-bottom: 5px;
  margin-top: 0;
  left: 50%;
}

.heatmap-cell:hover .heatmap-tooltip {
  opacity: 1;
}

.heatmap-loading, .heatmap-error {
  text-align: center;
  padding: 20px;
  color: #767676;
  font-size: 14px;
}

.heatmap-error {
  color: #e74c3c;
}

@media screen and (max-width: 900px) {
  .heatmap-grid {
    /* 在小屏幕上减小格子大小并调整间隙 */
    grid-template-rows: repeat(7, 10px);
    grid-template-columns: repeat(53, 10px);
    grid-gap: 3px;
  }
  
  .heatmap-cell {
    width: 10px;
    height: 10px;
  }
  
  .heatmap-days {
    top: 22px;
    height: calc(7 * 10px + 6 * 3px);
  }
  
  .heatmap-days span {
    height: 10px;
    line-height: 10px;
    font-size: 8px;
  }
}

/* 移除以下媒体查询，因为我们将通过JavaScript动态调整格子大小 */
@media screen and (max-width: 768px) {
  .heatmap-container {
    width: 100%;
  }
  
  /* 移除最小宽度限制 */
  .heatmap-wrapper {
    min-width: auto;
  }
}

@media screen and (max-width: 600px) {
  .heatmap-container {
    margin: 20px auto;
    padding: 10px 0;
  }
  
  /* 移除最小宽度限制 */
  .heatmap-wrapper {
    min-width: auto;
  }
  
  /* 在非常小的屏幕上，隐藏星期标签 */
  .heatmap-days span:nth-child(2),  /* 一 */
  .heatmap-days span:nth-child(6) { /* 五 */
    visibility: hidden;
  }
}