.timeline-container {
  width: 100%;
  position: relative;
  -webkit-user-select: none;
  user-select: none;
}

.timeline-wrapper {
  width: 100%;
  position: relative;
}

.timeline-label {
  font-size: 12px;
  color: #666;
  margin-bottom: 4px;
}

.canvas-wrapper {
  width: 100%;
  position: relative;
}

.timeline-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

.timeline-canvas:active {
  cursor: grabbing;
}

/* 添加一些视觉反馈 */
.canvas-wrapper:hover {
  border-color: #d1d1d1;
}

.canvas-wrapper:active {
  border-color: #18a058;
}

.timeline-tooltip {
  position: fixed;
  background-color: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  pointer-events: none;
  z-index: 1000;
  transform: translate(-50%, -100%);
  display: none;
  white-space: nowrap;
}

.timeline-tooltip::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  border-width: 4px;
  border-style: solid;
  border-color: rgba(0, 0, 0, 0.9) transparent transparent transparent;
}