#chart {
    position: relative;
    width: 960px;
    height: 600px;
    margin: 40px auto;
  }
  
  svg {
    width: 100%;
    height: 100%;
  }
    
  .bar {
    fill-opacity: 0.8;
  }
  .bar:hover {
    fill-opacity: 1;
  }
  .label {
    font-size: 12px;
    fill: #FFFFFF;
  }
  .axis .domain,
  .axis line {
    stroke: #ccc;
  }
  .date-label {
    position: absolute;
    right: 20px;
    bottom: 20px;
    font-size: 48px;
    font-weight: bold;
    color: rgba(0,0,0,0.2);
    pointer-events: none;
  }
  
  #progress-container {
    width: 960px;
    margin: -50px auto 20px;
  }
  #time-progress {
    width: 100%;
    height: 8px;
    appearance: none;
  }
  #time-progress::-webkit-progress-bar {
    background-color: #eee;
    border-radius: 4px;
    overflow: hidden;
  }
  #time-progress::-webkit-progress-value {
    background-color: steelblue;
  }
  
  #time-ticks .tick {
    font-size: 10px;
    color: #FFFFFF;
    user-select: none;
  }
  
  /* Ensure chart container is positioned relative for absolute child positioning */
  #chart {
    position: relative;
  }
  
  /* Big month-year display */
  #date-display {
    position: absolute;
    top: 100px;
    right: 20px;
    font-size: 32px;
    font-weight: bold;
    pointer-events: none;
  }