/* Statistics Panel Styles */
.statistics-panel {
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
  margin-bottom: 20px;
  border: 1px solid #e2e8f0;
}

.statistics-header {
  background-color: #f8fafc;
  padding: 15px 20px;
  border-bottom: 1px solid #e2e8f0;
  border-radius: 8px 8px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.statistics-header h3 {
  margin: 0;
  color: #2c3e50;
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-toggle {
  background: none;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  color: #4a5568;
  transition: all 0.2s ease;
}

.btn-toggle:hover {
  background-color: #e6f7ff;
  border-color: #3182ce;
  color: #3182ce;
}

.btn-toggle-icon {
  background: none;
  border: 1px solid #cbd5e0;
  border-radius: 6px;
  padding: 0;
  cursor: pointer;
  color: #4a5568;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  position: relative;
  font-size: 0;
  overflow: hidden;
}

.btn-toggle-icon::before {
  content: '−';
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  display: block;
}

.btn-toggle-icon:hover {
  background-color: #e6f7ff;
  border-color: #3182ce;
  color: #3182ce;
  transform: scale(1.05);
}

.btn-toggle-icon:active {
  transform: scale(0.95);
}

.statistics-panel.minimized .statistics-content,
.visualization-panel.minimized .visualization-content {
  display: none;
}

.statistics-panel.minimized .statistics-header .btn-toggle-icon::before,
.visualization-panel.minimized .visualization-header .btn-toggle-icon::before {
  content: '+';
}

.statistics-panel.minimized .statistics-header,
.visualization-panel.minimized .visualization-header {
  border-bottom: none;
}

.statistics-content {
  padding: 20px;
}

.statistics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.stat-card {
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 15px;
}

.stat-card h4 {
  margin: 0 0 12px 0;
  color: #2c3e50;
  font-size: 1rem;
  font-weight: 600;
}

.stat-values {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.stat-label {
  color: #4a5568;
  font-size: 0.9rem;
}

.stat-value {
  font-weight: 600;
  color: #2c3e50;
  font-size: 0.95rem;
}

/* Column Statistics */
.stats-select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 0.9rem;
  background-color: white;
  cursor: pointer;
  margin-bottom: 10px;
}

.stats-select:focus {
  outline: none;
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.column-stats-details {
  min-height: 60px;
  padding: 12px;
  background-color: white;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  font-size: 0.9rem;
  color: #4a5568;
}

.column-stat-details h5 {
  margin: 0 0 10px 0;
  color: #2c3e50;
  font-size: 1rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 8px;
}

.stat-grid .stat-item {
  background-color: #f8fafc;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 0.85rem;
}

/* Grouping Controls */
.grouping-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
  margin-bottom: 15px;
}

.grouping-controls select {
  flex: 1;
  min-width: 120px;
}

.grouping-controls button {
  flex-shrink: 0;
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.grouping-results {
  max-height: 400px;
  overflow-y: auto;
}

.grouping-results-content h5 {
  margin: 0 0 10px 0;
  color: #2c3e50;
  font-size: 1rem;
}

.grouping-summary {
  margin: 0 0 15px 0;
  color: #4a5568;
  font-size: 0.9rem;
  font-style: italic;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.results-table th,
.results-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
}

.results-table th {
  background-color: #f8fafc;
  font-weight: 600;
  color: #2c3e50;
  position: sticky;
  top: 0;
}

.results-table tbody tr:hover {
  background-color: #f0f4f8;
}

.group-value {
  font-weight: 500;
  color: #2c3e50;
}

.count-value {
  text-align: right;
  font-family: monospace;
}

.percentage-value {
  text-align: right;
  color: #718096;
}

.aggregate-value {
  text-align: right;
  font-weight: 500;
  font-family: monospace;
}

.more-results {
  text-align: center;
  color: #718096;
  font-style: italic;
}

/* Calculated Columns */
.calculated-columns-controls {
  margin-bottom: 20px;
}

.calc-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.calc-input:focus {
  outline: none;
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.calc-textarea {
  width: 100%;
  min-height: 60px;
  padding: 8px 12px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: 'Courier New', monospace;
  resize: vertical;
  margin-bottom: 10px;
}

.calc-textarea:focus {
  outline: none;
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.formula-help {
  background-color: #e6f7ff;
  border: 1px solid #91d5ff;
  border-radius: 4px;
  padding: 15px;
  margin-bottom: 10px;
  font-size: 0.8rem;
  color: #003a8c;
  line-height: 1.5;
}

.help-section {
  margin-bottom: 12px;
}

.help-section strong {
  color: #002766;
  font-size: 0.85rem;
}

.help-examples {
  background-color: #f0f8ff;
  padding: 10px;
  border-radius: 4px;
  border-left: 3px solid #1890ff;
  margin-top: 10px;
}

.help-examples strong {
  color: #0050b3;
}

.formula-help code {
  background-color: #ffffff;
  padding: 2px 4px;
  border-radius: 2px;
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.75rem;
  color: #d46b08;
  border: 1px solid #d9d9d9;
}

/* Column suggestions dropdown */
.column-suggestions {
  background: white;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  max-width: 300px;
  max-height: 200px;
  overflow-y: auto;
}

.suggestion-item {
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  color: #333;
  border-bottom: 1px solid #f0f0f0;
}

.suggestion-item:last-child {
  border-bottom: none;
}

.suggestion-item:hover {
  background-color: #e6f7ff;
  color: #1890ff;
}

.suggestion-item:active {
  background-color: #bae7ff;
}

.calc-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.formula-preview {
  min-height: 40px;
  margin-bottom: 15px;
}

.formula-preview-content h6 {
  margin: 0 0 8px 0;
  color: #2c3e50;
  font-size: 0.9rem;
}

.preview-values {
  list-style: none;
  padding: 0;
  margin: 0 0 10px 0;
}

.preview-values li {
  padding: 4px 0;
  font-size: 0.85rem;
  color: #4a5568;
}

.preview-more {
  color: #718096;
  font-style: italic;
}

.preview-stats {
  margin: 0;
  font-size: 0.8rem;
  color: #718096;
  font-weight: 500;
}

.calculated-columns-list {
  border-top: 1px solid #e2e8f0;
  padding-top: 15px;
}

.calculated-columns-list h5 {
  margin: 0 0 10px 0;
  color: #2c3e50;
  font-size: 0.95rem;
}

.calculated-columns-items {
  font-size: 0.85rem;
  color: #4a5568;
}

.calc-column-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  margin-bottom: 8px;
  background-color: white;
}

.calc-column-info {
  flex: 1;
}

.calc-column-info strong {
  display: block;
  color: #2c3e50;
  margin-bottom: 2px;
}

.calc-formula {
  font-family: 'Courier New', monospace;
  color: #718096;
  font-size: 0.8rem;
}

.btn-danger {
  background-color: #e53e3e;
  color: white;
  border: none;
}

.btn-danger:hover {
  background-color: #c53030;
}

/* Error and Success Messages */
.error-message {
  background-color: #fed7d7;
  color: #c53030;
  border: 1px solid #feb2b2;
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 0.85rem;
  margin: 5px 0;
}

.success-message {
  background-color: #c6f6d5;
  color: #2f855a;
  border: 1px solid #9ae6b4;
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 0.85rem;
  margin: 5px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .statistics-grid {
    grid-template-columns: 1fr;
  }
  
  .grouping-controls {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .calc-buttons {
    flex-direction: column;
  }
  
  .calc-column-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .stat-grid {
    grid-template-columns: 1fr;
  }
}