/* static/css/civil/bitumin-density-calculator.css */
#roadVolumeDisplay {
  padding: 20px;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 10px;
  border: 2px solid #dee2e6;
}

.chart-container {
  height: 250px;
  position: relative;
}

.advanced-options {
  transition: all 0.3s ease;
}

.advanced-toggle {
  cursor: pointer;
  user-select: none;
}

.advanced-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
}

.advanced-content.show {
  max-height: 500px;
}

#crossSectionCanvas {
  border: 1px solid #dee2e6;
  border-radius: 5px;
  background-color: #f8f9fa;
}

#densityVisualization {
  border: 1px solid #dee2e6;
  border-radius: 5px;
  background-color: #f8f9fa;
  padding: 10px;
}

@media (max-width: 768px) {
  .chart-container {
    height: 200px;
  }
  
  #roadVolumeDisplay .display-4 {
    font-size: 2.5rem;
  }
  
  #crossSectionCanvas,
  #densityVisualization {
    height: 150px;
  }
}