body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  color: #333;
  background-color: #f9f9f9;
}

header {
  margin-bottom: 40px;
  border-bottom: 1px solid #eee;
  padding-bottom: 20px;
}

h1 {
  color: #1468a8;
}

.chart-container {
  aspect-ratio: 2/1;
  position: relative;
  width: 100%;
  margin-bottom: 40px;
  border: 1px solid #eee;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  background-color: #fff;
  overflow: hidden;
  box-sizing: border-box;
}

@supports not (aspect-ratio: 2/1) {
  .chart-container::before {
    content: "";
    display: block;
    padding-top: 50%;
  }
  
  .chart-container > * {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 20px;
  }
}

.chart-section {
  height: 100%;
} 

.controls {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.control-panel {
  border: 1px solid #eee;
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 20px;
  background-color: #f9f9f9;
}

.control-panel h3 {
  margin-top: 0;
  color: #1468a8;
  font-size: 16px;
  border-bottom: 1px solid #eee;
  padding-bottom: 8px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 10px;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 15px;
}

label {
  font-weight: 600;
  font-size: 14px;
}

button {
  padding: 8px 16px;
  background-color: #1468a8;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #0d5082;
}

button.active {
  background-color: #34A853;
}

select, input {
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
  min-width: 120px;
}

input[type="color"] {
  padding: 2px;
  width: 40px;
  min-width: 40px;
  height: 30px;
}

input[type="checkbox"] {
  min-width: auto;
  margin-right: 5px;
}

input[type="range"] {
  min-width: 100px;
}

.tabs {
  display: flex;
  border-bottom: 1px solid #ddd;
  margin-bottom: 30px;
}

.tab {
  padding: 10px 20px;
  cursor: pointer;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  margin-right: 5px;
  background-color: #f5f5f5;
  transition: background-color 0.2s;
}

.tab.active {
  background-color: #fff;
  border-color: #ddd;
  position: relative;
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background-color: #fff;
}

.tab:hover {
  background-color: #e9e9e9;
}

.tab.active:hover {
  background-color: #fff;
}

footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid #eee;
  text-align: center;
  color: #666;
}

.error-message {
  color: #d32f2f;
  background-color: #ffebee;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 10px;
  border-left: 4px solid #d32f2f;
  font-size: 14px;
}

.debug-info {
  display: none;
}

.dataset-manager {
  margin-bottom: 15px;
}

.dataset-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  padding: 10px;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.dataset-item label {
  margin-right: 5px;
}

.dataset-actions {
  margin-left: auto;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 12px;
}

.accordion {
  border: 1px solid #ddd;
  border-radius: 4px;
  margin-bottom: 10px;
  overflow: hidden;
}

.accordion-header {
  padding: 10px 15px;
  background-color: #f5f5f5;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-content {
  padding: 15px;
  border-top: 1px solid #ddd;
  display: none;
}

.accordion-content.active {
  display: block;
}

.area-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 0;
}

.opacity-value {
  font-size: 12px;
  min-width: 30px;
  text-align: right;
}

.range-value {
  font-size: 12px;
  min-width: 30px;
  text-align: right;
  margin-left: 5px;
}

.visioncharts-average-line-line {
  shape-rendering: geometricPrecision;
}

.visioncharts-median-line-line {
  shape-rendering: geometricPrecision;
}

.visioncharts-average-line-label,
.visioncharts-median-line-label {
  user-select: none;
  pointer-events: none;
}

/* Toggle button active state for statistical lines */
#line-toggle-average.active,
#bar-toggle-average.active {
  background-color: #FF6B35;
}

#line-toggle-median.active,
#bar-toggle-median.active {
  background-color: #9C27B0;
}

/* Toggle button active state for ending labels */
#line-toggle-ending-labels.active,
#bar-toggle-ending-labels.active {
  background-color: #2196F3;
}

/* Ending labels configuration styling */
.ending-labels-config {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 6px;
  padding: 15px;
  margin-top: 10px;
}

.ending-labels-config h4 {
  margin-top: 0;
  margin-bottom: 15px;
  color: #495057;
  font-size: 14px;
  font-weight: 600;
}

/* Checkbox styling */
input[type="checkbox"] + label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: normal;
  margin-bottom: 0;
  cursor: pointer;
}

/* Range input styling improvements */
input[type="range"] {
  accent-color: #1468a8;
}

/* Responsive design for statistical controls */
@media (max-width: 768px) {
  .control-row {
    flex-direction: column;
    gap: 10px;
  }
  
  .control-group {
    min-width: 100%;
  }
  
  /* Stack visualization buttons vertically on mobile */
  .control-group > div[style*="display: flex"] {
    flex-direction: column !important;
    gap: 5px !important;
  }
  
  .control-group > div[style*="display: flex"] button {
    width: 100%;
    font-size: 12px;
    padding: 6px 12px;
  }
}

/* Improved accordion styling */
.accordion-header:hover {
  background-color: #e9ecef;
}

.accordion-header span {
  font-size: 18px;
  font-weight: bold;
  color: #6c757d;
  transition: transform 0.2s ease;
}

.accordion-content.active + .accordion-header span {
  transform: rotate(45deg);
}

/* Study item styling */
.study-item {
  transition: background-color 0.2s ease;
}

.study-item:hover {
  background-color: #e9ecef !important;
}

.study-item button:hover {
  background-color: #c82333 !important;
}

/* Dataset selector styling */
.dataset-selector {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 6px;
  padding: 15px;
  margin-bottom: 15px;
}

.dataset-selector h4 {
  margin-top: 0;
  margin-bottom: 10px;
  color: #495057;
  font-size: 14px;
  font-weight: 600;
}

.dataset-preview {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 4px;
  padding: 10px;
  margin-top: 10px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 12px;
  color: #495057;
  max-height: 100px;
  overflow-y: auto;
}