Various visual fixes and improvements

.claude/settings.json

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+{
+  "enabledPlugins": {
+    "pr-review-toolkit@claude-plugins-official": true
+  }
+}

.claude/skills/chart-standards.md

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+# Chart and Visualization Standards
+
+This skill ensures consistent chart styling across PolicyEngine visualizations using Plotly.js via `react-plotly.js`.
+
+## Required Imports
+
+```tsx
+import type { Layout } from 'plotly.js';
+import Plot from 'react-plotly.js';
+import { colors } from '@/designTokens/colors';
+import { spacing } from '@/designTokens/spacing';
+import { ChartContainer } from '@/components/ChartContainer';
+import { DEFAULT_CHART_CONFIG, getClampedChartHeight } from '@/utils/chartUtils';
+```
+
+## Chart Container Pattern
+
+Always wrap charts in `ChartContainer` for consistent styling:
+
+```tsx
+<ChartContainer title={getChartTitle()} onDownloadCsv={handleDownloadCsv}>
+  <Stack gap={spacing.sm}>
+    <Plot
+      data={chartData}
+      layout={layout}
+      config={DEFAULT_CHART_CONFIG}
+      style={{ width: '100%', height: chartHeight }}
+    />
+    {description}
+  </Stack>
+</ChartContainer>
+```
+
+## Color Semantics
+
+### Bar/Data Colors
+| Scenario | Color Token | Hex |
+|----------|-------------|-----|
+| Positive change (gains, winners) | `colors.primary[500]` | `#319795` (teal) |
+| Negative change (losses, losers) | `colors.gray[600]` | `#4B5563` |
+| Neutral/baseline | `colors.gray[300]` | `#D1D5DB` |
+| Error/warning states | `colors.error` | `#EF4444` |
+| Success states | `colors.success` | `#22C55E` |
+
+### Dynamic Color Assignment
+```tsx
+marker: {
+  color: yArray.map((value) => (value < 0 ? colors.gray[600] : colors.primary[500])),
+}
+```
+
+### Multi-Series Colors
+Use the design system's series palette:
+```tsx
+import { chartColors } from '@policyengine/design-system/charts';
+
+// Series order: teal, blue, dark teal, dark blue, gray
+chartColors.series[0]  // Primary teal
+chartColors.series[1]  // Blue accent
+chartColors.series[2]  // Dark teal
+chartColors.series[3]  // Dark blue
+chartColors.series[4]  // Gray
+```
+
+## Chart Configuration
+
+### Default Config (Always Use)
+```tsx
+import { DEFAULT_CHART_CONFIG } from '@/utils/chartUtils';
+
+config={{
+  ...DEFAULT_CHART_CONFIG,
+  locale: localeCode(countryId),  // For currency/number formatting
+}}
+```
+
+This provides:
+- `displayModeBar: false` - Hides Plotly toolbar
+- `responsive: true` - Enables responsive sizing
+
+### Responsive Height
+```tsx
+import { useMediaQuery, useViewportSize } from '@mantine/hooks';
+import { getClampedChartHeight } from '@/utils/chartUtils';
+
+const mobile = useMediaQuery('(max-width: 768px)');
+const { height: viewportHeight } = useViewportSize();
+const chartHeight = getClampedChartHeight(viewportHeight, mobile);
+
+// Use in style
+style={{ width: '100%', height: chartHeight }}
+```
+
+## Standard Layout Properties
+
+### Base Layout
+```tsx
+const layout = {
+  xaxis: {
+    title: { text: 'X Axis Label' },
+    fixedrange: true,  // Disable zoom/pan
+  },
+  yaxis: {
+    title: { text: 'Y Axis Label' },
+    tickprefix: currencySymbol(countryId),  // For currency
+    tickformat: ',.0f',  // Number format
+    fixedrange: true,
+  },
+  showlegend: false,  // Or configure legend position
+  margin: {
+    t: 0,   // Top (usually 0, title is outside chart)
+    b: 80,  // Bottom (for x-axis labels)
+    l: 60,  // Left (for y-axis labels)
+    r: 20,  // Right
+  },
+} as Partial<Layout>;
+```
+
+### Text on Bars (Uniform Text)
+```tsx
+uniformtext: {
+  mode: 'hide' as const,  // Hide text that doesn't fit
+  minsize: mobile ? 4 : 8,
+},
+```
+
+### Legend Position (When Needed)
+```tsx
+legend: {
+  orientation: 'h',
+  yanchor: 'bottom',
+  y: 1.02,
+  xanchor: 'right',
+  x: 1,
+},
+```
+
+## Hover Templates
+
+Use custom hover templates for rich tooltips:
+
+```tsx
+{
+  customdata: xArray.map((x, i) => hoverMessage(x, yArray[i])),
+  hovertemplate: '<b>Decile %{x}</b><br><br>%{customdata}<extra></extra>',
+}
+```
+
+The `<extra></extra>` hides the trace name box.
+
+## Chart Title Pattern
+
+Generate dynamic titles that describe the reform's impact:
+
+```tsx
+const getChartTitle = () => {
+  const change = calculateChange();
+  const signTerm = change > 0 ? 'increase' : 'decrease';
+
+  if (change === 0) {
+    return `This reform would have no effect on ${metric}`;
+  }
+  return `This reform would ${signTerm} ${metric} by ${formatValue(change)}`;
+};
+```
+
+## CSV Export Pattern
+
+Always provide CSV download functionality:
+
+```tsx
+import { downloadCsv } from '@/utils/chartUtils';
+
+const handleDownloadCsv = () => {
+  const csvData = Object.entries(dataObject).map(([key, value]) => [
+    `Label ${key}`,
+    value.toString(),
+  ]);
+  downloadCsv(csvData, 'descriptive-filename.csv');
+};
+```
+
+## Description Pattern
+
+Add explanatory text below charts:
+
+```tsx
+const description = (
+  <Text size="sm" c="dimmed">
+    PolicyEngine sorts households into ten equally-populated groups...
+  </Text>
+);
+```
+
+## Complete Chart Component Template
+
+```tsx
+import type { Layout } from 'plotly.js';
+import Plot from 'react-plotly.js';
+import { Stack, Text } from '@mantine/core';
+import { useMediaQuery, useViewportSize } from '@mantine/hooks';
+import { ChartContainer } from '@/components/ChartContainer';
+import { colors } from '@/designTokens/colors';
+import { spacing } from '@/designTokens/spacing';
+import { DEFAULT_CHART_CONFIG, downloadCsv, getClampedChartHeight } from '@/utils/chartUtils';
+
+interface Props {
+  output: OutputType;
+}
+
+export default function ChartSubPage({ output }: Props) {
+  const mobile = useMediaQuery('(max-width: 768px)');
+  const countryId = useCurrentCountry();
+  const { height: viewportHeight } = useViewportSize();
+  const chartHeight = getClampedChartHeight(viewportHeight, mobile);
+
+  // Extract and prepare data
+  const xArray = Object.keys(output.data);
+  const yArray = Object.values(output.data);
+
+  // Generate title
+  const getChartTitle = () => {
+    // Dynamic title based on data
+  };
+
+  // CSV export
+  const handleDownloadCsv = () => {
+    const csvData = xArray.map((x, i) => [x, yArray[i].toString()]);
+    downloadCsv(csvData, 'chart-name.csv');
+  };
+
+  // Chart data
+  const chartData = [{
+    x: xArray,
+    y: yArray,
+    type: 'bar' as const,
+    marker: {
+      color: yArray.map((v) => (v < 0 ? colors.gray[600] : colors.primary[500])),
+    },
+  }];
+
+  // Layout
+  const layout = {
+    xaxis: { title: { text: 'X Label' }, fixedrange: true },
+    yaxis: { title: { text: 'Y Label' }, fixedrange: true },
+    showlegend: false,
+    margin: { t: 0, b: 80, l: 60, r: 20 },
+  } as Partial<Layout>;
+
+  return (
+    <ChartContainer title={getChartTitle()} onDownloadCsv={handleDownloadCsv}>
+      <Stack gap={spacing.sm}>
+        <Plot
+          data={chartData}
+          layout={layout}
+          config={DEFAULT_CHART_CONFIG}
+          style={{ width: '100%', height: chartHeight }}
+        />
+        <Text size="sm" c="dimmed">
+          Explanatory description...
+        </Text>
+      </Stack>
+    </ChartContainer>
+  );
+}
+```
+
+## Watermark (For Research/Blog Charts)
+
+When charts need PolicyEngine branding (research posts, exported images):
+
+```tsx
+import { chartLogo } from '@policyengine/design-system/charts';
+
+layout: {
+  images: [chartLogo],
+}
+```
+
+Logo source: `/assets/logos/policyengine/teal-square.png`
+
+## Anti-Patterns
+
+### Never Do This
+```tsx
+// WRONG - Hardcoded colors
+marker: { color: '#319795' }
+marker: { color: value > 0 ? 'green' : 'red' }
+
+// WRONG - Hardcoded dimensions
+style={{ height: 500 }}
+
+// WRONG - Missing config
+<Plot data={data} layout={layout} />
+
+// WRONG - No container
+<Plot ... />  // Charts should be in ChartContainer
+```
+
+### Always Do This
+```tsx
+// CORRECT - Token colors
+marker: { color: colors.primary[500] }
+marker: { color: value < 0 ? colors.gray[600] : colors.primary[500] }
+
+// CORRECT - Responsive height
+style={{ height: chartHeight }}
+
+// CORRECT - With config
+<Plot data={data} layout={layout} config={DEFAULT_CHART_CONFIG} />
+
+// CORRECT - With container
+<ChartContainer title={title} onDownloadCsv={handleCsv}>
+  <Plot ... />
+</ChartContainer>
+```