:root {
  --bg: #0f1419;
  --bg-panel: #1a1f26;
  --fg: #e8e9eb;
  --fg-dim: #9aa0a8;
  --accent: #e63946;
  --accent-soft: #f07078;
  --grid: #2b323c;
  --grid-strong: #3a4250;
  --good: #4ade80;
  --warn: #fbbf24;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--grid-strong);
}

.tab {
  padding: 10px 18px;
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
}

.tab:hover { color: var(--fg); }

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.header h1 {
  font-size: 28px;
  line-height: 1.2;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.subtitle {
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--fg);
}

.byline {
  color: var(--fg-dim);
  margin: 0 0 24px;
  font-size: 14px;
  max-width: 720px;
}

.chart-wrapper {
  position: relative;
  background: var(--bg-panel);
  border-radius: 12px;
  padding: 20px 16px 12px;
  margin-bottom: 16px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

#chart {
  width: 100%;
  height: 520px;
}

.year-display {
  position: absolute;
  top: 28px;
  right: 32px;
  text-align: right;
  pointer-events: none;
}

.year-label {
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.year-value {
  font-size: 56px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  background: var(--bg-panel);
  color: var(--fg);
  border: 1px solid var(--grid-strong);
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover { background: #232a33; border-color: var(--fg-dim); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn.primary:hover { background: var(--accent-soft); border-color: var(--accent-soft); }

.speed {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--fg-dim);
}

.speed select {
  background: var(--bg-panel);
  color: var(--fg);
  border: 1px solid var(--grid-strong);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 14px;
}

#scrubber {
  flex: 1;
  min-width: 200px;
  accent-color: var(--accent);
}

.annotation {
  background: var(--bg-panel);
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 24px;
  min-height: 72px;
  transition: opacity 0.3s;
}

.annotation-text { margin: 0; font-size: 15px; }

.legend-notes, .footer {
  background: var(--bg-panel);
  border-radius: 12px;
  padding: 20px 24px;
  margin-top: 16px;
}

.legend-notes h3, .footer h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

.legend-notes ul, .footer ul {
  margin: 0;
  padding-left: 20px;
  color: var(--fg-dim);
  font-size: 14px;
}

.legend-notes li, .footer li {
  margin-bottom: 6px;
}

.footer em { color: var(--fg); font-style: italic; }

.disclaimer {
  margin-top: 14px;
  font-size: 13px;
  color: var(--fg-dim);
  border-top: 1px solid var(--grid);
  padding-top: 12px;
}

/* --- Chart SVG --- */

.axis path, .axis line {
  stroke: var(--grid);
}

.axis text {
  fill: var(--fg-dim);
  font-size: 12px;
}

.grid line {
  stroke: var(--grid);
  stroke-dasharray: 3 3;
  opacity: 0.7;
}

.grid path { stroke: none; }

.axis-label {
  fill: var(--fg-dim);
  font-size: 13px;
  font-weight: 500;
}

.curve {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linejoin: round;
  stroke-linecap: round;
  filter: drop-shadow(0 2px 4px rgba(230, 57, 70, 0.35));
}

.curve.estimated {
  stroke-dasharray: 2 6;
  opacity: 0.85;
}

.point {
  fill: var(--accent);
  stroke: var(--bg-panel);
  stroke-width: 2;
}

.point-label {
  fill: var(--fg);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  text-anchor: middle;
}

.income-label {
  fill: var(--accent-soft);
  font-size: 11px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  text-anchor: middle;
}

.quality-badge {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-dim);
  margin-top: 8px;
  font-weight: 500;
}

/* --- Pictograph (wealth.html) --- */

.pict-heading {
  fill: var(--fg-dim);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.group-label {
  fill: var(--fg);
  font-size: 14px;
  font-weight: 600;
}

.group-count {
  fill: var(--fg-dim);
  font-size: 12px;
}

.wealth-bar {
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.wealth-bar-value {
  fill: var(--fg);
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.top01-highlight {
  fill: none;
  stroke: var(--fg);
  stroke-width: 1.5;
}

.top01-callout {
  fill: var(--fg);
  font-size: 11px;
  font-weight: 600;
  font-style: italic;
}

.person-icon {
  opacity: 0.95;
}

.summary-separator {
  stroke: var(--grid-strong);
  stroke-width: 1;
  stroke-dasharray: 2 4;
  opacity: 0.6;
}

.summary-label { fill: var(--accent); }

.summary-value {
  font-weight: 800;
  fill: var(--fg);
}

.wealth-bar-summary {
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.45));
}

@media (max-width: 700px) {
  .app { padding: 20px 12px; }
  .header h1 { font-size: 22px; }
  .subtitle { font-size: 16px; }
  .year-value { font-size: 36px; }
  .year-display { top: 20px; right: 20px; }
  #chart { height: 380px; }
}