/* Data Visualization Styles */

/* Sorting Visualizer */
.sorting-container {
  margin: 40px 0;
  padding: 20px;
  background: var(--card-background, #ffffff);
  border-radius: var(--border-radius, 8px);
  box-shadow: var(--shadow-light, 0 2px 8px rgba(0, 0, 0, 0.1));
}

.sorting-container h3 {
  margin: 0 0 20px 0;
  color: var(--text-color, #333);
  font-size: var(--font-size-xl, 1.125rem);
  text-align: center;
}

.sorting-visualization {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.sorting-canvas {
  border: 1px solid var(--border-color, #ddd);
  border-radius: var(--border-radius-sm, 4px);
  background: #fafafa;
  max-width: 100%;
  display: block;
}

.sorting-controls {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.control-select {
  padding: 8px 12px;
  border: 1px solid var(--border-color, #ddd);
  border-radius: var(--border-radius-sm, 4px);
  background: var(--background-color, #ffffff);
  color: var(--text-color, #333);
  font-size: var(--font-size-sm, 0.875rem);
  cursor: pointer;
  min-width: 150px;
}

.control-select:hover {
  border-color: var(--primary-color, #007bff);
}

.control-select:focus {
  outline: 2px solid var(--primary-color, #007bff);
  outline-offset: 2px;
}

.control-label {
  color: var(--text-color, #333);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: 500;
}

.control-slider {
  width: 120px;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border-color, #ddd);
  border-radius: 3px;
  outline: none;
}

.control-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary-color, #007bff);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.control-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--primary-color, #007bff);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}
.charts-dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
  margin: 20px 0;
  padding: 20px 0;
}

.chart-container {
  background: var(--card-background, #ffffff);
  border-radius: var(--border-radius, 8px);
  padding: 20px;
  box-shadow: var(--shadow-light, 0 2px 8px rgba(0, 0, 0, 0.1));
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.chart-container:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium, 0 4px 16px rgba(0, 0, 0, 0.15));
}

.chart-canvas {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--border-radius-sm, 4px);
  display: block;
  margin: 0 auto;
}

.chart-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
  margin-top: 15px;
  flex-wrap: wrap;
}

.chart-type-select {
  padding: 8px 12px;
  border: 1px solid var(--border-color, #ddd);
  border-radius: var(--border-radius-sm, 4px);
  background: var(--background-color, #ffffff);
  color: var(--text-color, #333);
  font-size: var(--font-size-sm, 0.875rem);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.chart-type-select:hover {
  border-color: var(--primary-color, #007bff);
}

.chart-type-select:focus {
  outline: 2px solid var(--primary-color, #007bff);
  outline-offset: 2px;
}

/* Chart loading state */
.chart-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  color: var(--text-muted, #666);
}

.chart-loading::before {
  content: '';
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color, #ddd);
  border-top: 3px solid var(--primary-color, #007bff);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: 10px;
}

/* Chart error state */
.chart-error {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  color: var(--error-color, #dc3545);
  text-align: center;
  padding: 20px;
  background: var(--error-background, #f8d7da);
  border: 1px solid var(--error-border, #f5c6cb);
  border-radius: var(--border-radius, 8px);
}

/* Responsive design for charts */
@media (max-width: 768px) {
  .charts-dashboard {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .chart-container {
    padding: 15px;
  }
  
  .chart-controls {
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .charts-dashboard {
    gap: 10px;
  }
  
  .chart-container {
    padding: 10px;
  }
  
  .chart-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .chart-type-select {
    width: 100%;
  }
}

/* Dark theme support */
[data-theme="dark"] .chart-container {
  background: var(--card-background, #2d3748);
  box-shadow: var(--shadow-light, 0 2px 8px rgba(0, 0, 0, 0.3));
}

[data-theme="dark"] .chart-type-select {
  background: var(--background-color, #1a202c);
  border-color: var(--border-color, #4a5568);
  color: var(--text-color, #e2e8f0);
}

/* High contrast theme support */
[data-theme="high-contrast"] .chart-container {
  background: var(--card-background, #000000);
  border: 2px solid var(--text-color, #ffffff);
  box-shadow: none;
}

[data-theme="high-contrast"] .chart-type-select {
  background: var(--background-color, #000000);
  border: 2px solid var(--text-color, #ffffff);
  color: var(--text-color, #ffffff);
}

/* Chart animations */
.chart-container[data-animating="true"] {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* Chart tooltip styles */
#chart-tooltip {
  position: absolute;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

#chart-tooltip.visible {
  opacity: 1;
}

/* Chart legend styles */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--text-color, #333);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid var(--border-color, #ddd);
}

/* Performance optimizations */
.chart-container {
  will-change: transform;
  contain: layout style paint;
}

.chart-canvas {
  contain: layout style paint;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .chart-container {
    transition: none;
  }
  
  .chart-container[data-animating="true"] {
    animation: none;
  }
  
  #chart-tooltip {
    transition: none;
  }
}

/* Focus management */
.chart-controls button:focus,
.chart-type-select:focus {
  outline: 2px solid var(--primary-color, #007bff);
  outline-offset: 2px;
}

/* Chart empty state */
.chart-empty {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 300px;
  color: var(--text-muted, #666);
  text-align: center;
}

.chart-empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.chart-empty-text {
  font-size: var(--font-size-lg, 1rem);
  margin-bottom: 0.5rem;
}

.chart-empty-subtext {
  font-size: var(--font-size-sm, 0.875rem);
  opacity: 0.7;
}