.cuu-cung-container {
  max-width: 500px;
  margin: 0 auto;
  font-family: system-ui, sans-serif;
}

.cuu-cung-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 4px;
  width: 100%;
  aspect-ratio: 1/1;
  max-width: 400px;
  margin: 20px auto;
  min-height: 240px;
}

.cuu-cung-cell {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  border: 1px solid #ccc;
  background-color: #f9f9f9;
  min-height: 0;
  min-width: 0;
  height: 100%;
  width: 100%;
  box-sizing: border-box;
  padding: 8px;
  transition: background-color 0.3s;
}

.cuu-cung-cell:hover {
  background-color: #e9e9e9;
}

.direction {
  font-size: 14px;
  color: #666;
  position: absolute;
  top: 5px;
  left: 5px;
  font-weight: bold;
}

.star-number {
  font-size: 28px;
  font-weight: bold;
  color: #333;
}

.star-selector {
  margin: 20px 0;
}

.star-selector select {
  padding: 8px;
  font-size: 16px;
  border-radius: 4px;
  border: 1px solid #ccc;
  margin-left: 10px;
}

/* Tooltip styling */
.tooltip {
  position: absolute;
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 12px;
  border-radius: 5px;
  z-index: 100;
  max-width: 300px;
  display: none;
  font-size: 14px;
  line-height: 1.5;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}