export function dashboardChartsStyles(): string {
  return `
    .dash-grid { display: grid; gap: 16px; grid-template-columns: 1fr; margin: 20px 0 8px; }
    .chart-empty {
      color: var(--muted-2); font-size: 0.88rem; padding: 28px 12px; text-align: center;
    }
    .analytics-toolbar {
      display: flex; flex-wrap: wrap; justify-content: space-between;
      align-items: center; gap: 12px; margin-bottom: 18px;
    }
    .analytics-stats {
      display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px;
      margin-bottom: 18px;
    }
    @media (min-width: 768px) { .analytics-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
    .stat-card {
      padding: 16px 14px; border-radius: 16px;
      background: linear-gradient(165deg, var(--surface) 0%, var(--graphite) 100%);
      border: 1px solid var(--border-glow);
      box-shadow: var(--shadow-soft);
    }
    .stat-card .stat-label {
      font-size: 0.72rem; font-weight: 600; color: var(--muted);
      text-transform: uppercase; letter-spacing: 0.06em;
    }
    .stat-card .stat-value {
      display: block; margin: 8px 0 4px; font-size: 1.75rem; font-weight: 800;
      line-height: 1; color: var(--text);
    }
    .stat-card .stat-hint { margin: 0; font-size: 0.78rem; color: var(--muted-2); line-height: 1.35; }
    .stat-card.success .stat-value { color: #86efac; }
    .stat-card.warning .stat-value { color: #fcd34d; }
    .analytics-viz-grid {
      display: grid; grid-template-columns: 1fr; gap: 14px; margin-bottom: 18px;
    }
    @media (min-width: 960px) {
      .analytics-viz-grid {
        grid-template-columns: 1.4fr 1fr;
        grid-template-areas:
          "hero hero"
          "quality orders"
          "status status";
      }
      .viz-card--hero { grid-area: hero; }
      .viz-card--quality { grid-area: quality; }
      .viz-card--orders { grid-area: orders; }
      .viz-card--status { grid-area: status; }
    }
    .viz-card {
      background: linear-gradient(165deg, var(--surface) 0%, var(--graphite) 100%);
      border: 1px solid var(--border-glow);
      border-radius: 18px; padding: 18px 16px 14px;
      box-shadow: var(--shadow-soft);
    }
    .viz-head { margin-bottom: 12px; }
    .viz-head h3 {
      margin: 0 0 4px; font-size: 1rem; font-weight: 700; color: var(--text);
      text-transform: none; letter-spacing: 0;
    }
    .viz-head p { margin: 0; font-size: 0.82rem; color: var(--muted); line-height: 1.4; }
    .viz-chart-wrap {
      overflow-x: auto; -webkit-overflow-scrolling: touch;
      margin: 0 -4px; padding: 4px 4px 0;
    }
    .viz-chart { width: 100%; min-width: 320px; height: auto; display: block; }
    .viz-legend {
      display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 12px;
    }
    .viz-legend-item {
      display: inline-flex; align-items: center; gap: 7px;
      font-size: 0.8rem; color: var(--muted); font-weight: 500;
    }
    .viz-legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
    .viz-legend-pill {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 5px 10px; border-radius: 999px;
      background: var(--bg-elevated); border: 1px solid var(--border);
      font-size: 0.76rem; color: var(--text-soft);
    }
    .metric-chips {
      display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px;
    }
    .metric-chip {
      flex: 1 1 180px; padding: 12px 14px; border-radius: 14px;
      background: var(--bg-elevated); border: 1px solid var(--border);
    }
    .metric-chip span { display: block; font-size: 0.72rem; color: var(--muted); font-weight: 600; }
    .metric-chip strong { display: block; margin-top: 4px; font-size: 1.05rem; color: var(--text); }
    .metric-chip p { margin: 4px 0 0; font-size: 0.74rem; color: var(--muted-2); line-height: 1.3; }
    .metric-chip.warning { border-color: #fbbf2444; }
    .metric-chip.success { border-color: #34d39944; }
    .donut-wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; padding: 8px 0; }
    .donut {
      width: 112px; height: 112px; border-radius: 50%; flex-shrink: 0; position: relative;
    }
    .donut::after {
      content: ""; position: absolute; inset: 24%;
      background: var(--graphite); border-radius: 50%;
    }
    .donut-center {
      position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
      flex-direction: column; z-index: 1; pointer-events: none;
    }
    .donut-center strong { font-size: 1.15rem; color: var(--text); }
    .donut-center span { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; }
    .donut-legend { list-style: none; margin: 0; padding: 0; flex: 1; min-width: 140px; }
    .donut-legend li {
      display: flex; align-items: center; gap: 8px;
      font-size: 0.84rem; color: var(--muted); margin-bottom: 8px;
    }
    .donut-legend li strong { color: var(--text); margin-left: auto; font-size: 0.95rem; }
    .legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
    .chart-bar-row {
      display: grid; grid-template-columns: minmax(88px, 32%) 1fr auto;
      gap: 10px; align-items: center; margin-bottom: 10px;
    }
    .chart-bar-row:last-child { margin-bottom: 0; }
    .chart-bar-label { font-size: 0.82rem; color: var(--muted); }
    .chart-bar-track {
      height: 10px; border-radius: 999px; background: var(--bg-elevated);
      overflow: hidden; border: 1px solid var(--border);
    }
    .chart-bar-fill {
      height: 100%; border-radius: 999px; min-width: 2px;
      background: linear-gradient(90deg, var(--accent), var(--neon));
    }
    .chart-bar-val { font-size: 0.82rem; font-weight: 700; color: var(--text); min-width: 1.5em; text-align: right; }
    .platform-totals { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
    @media (min-width: 640px) { .platform-totals { grid-template-columns: repeat(3, 1fr); } }
    .platform-total {
      text-align: center; padding: 12px 8px; border-radius: 10px;
      background: var(--bg-elevated); border: 1px solid var(--border);
    }
    .platform-total strong { display: block; font-size: 1.25rem; font-weight: 800; }
    .platform-total span { font-size: 0.78rem; color: var(--muted); }
    .viz-svg-lbl { fill: #94a3b8; font-size: 10px; font-family: system-ui, sans-serif; }
    .viz-svg-val { fill: #e2e8f0; font-size: 11px; font-weight: 700; font-family: system-ui, sans-serif; }
    .funnel-pills { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 14px; }
    .funnel-pill {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 8px 12px; border-radius: 12px;
      background: var(--bg-elevated); border: 1px solid var(--border);
      font-size: 0.82rem; color: var(--muted);
    }
    .funnel-pill strong { font-size: 1rem; color: var(--text); }
    .funnel-arrow { color: var(--muted-2); font-size: 0.9rem; padding: 0 2px; }
    .roi-panel { margin-bottom: 18px; }
    .roi-hero {
      display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
      padding: 16px 18px; margin-bottom: 14px; border-radius: 16px;
      background: linear-gradient(135deg, var(--surface) 0%, var(--graphite) 100%);
      border: 1px solid var(--border-glow);
    }
    .roi-hero-badge {
      min-width: 88px; padding: 10px 14px; border-radius: 14px; text-align: center;
      background: var(--bg-elevated); border: 1px solid var(--border);
    }
    .roi-hero-badge strong {
      display: block; font-size: 1.65rem; font-weight: 800; line-height: 1.1;
    }
    .roi-hero-badge span {
      display: block; margin-top: 4px; font-size: 0.72rem; color: var(--muted);
      text-transform: uppercase; letter-spacing: 0.05em;
    }
    .roi-hero-badge.success strong { color: #86efac; }
    .roi-hero-badge.warning strong { color: #fcd34d; }
    .roi-hero-text { flex: 1; min-width: 200px; }
    .roi-hero-text p { margin: 0; font-size: 0.88rem; color: var(--muted); line-height: 1.45; }
    .roi-table { width: 100%; border-collapse: collapse; }
    .roi-table tr { border-bottom: 1px solid var(--border); }
    .roi-table tr:last-child { border-bottom: none; }
    .roi-table td { padding: 11px 4px; font-size: 0.88rem; vertical-align: top; }
    .roi-table td:first-child { color: var(--muted); width: 46%; padding-right: 12px; }
    .roi-table td:last-child { color: var(--text); font-weight: 600; text-align: right; }
    .roi-table .sub { display: block; margin-top: 3px; font-size: 0.74rem; font-weight: 400; color: var(--muted-2); }
    .roi-disclaimer {
      margin: 12px 0 0; padding: 10px 12px; border-radius: 10px;
      background: var(--bg-elevated); border: 1px solid var(--border);
      font-size: 0.76rem; color: var(--muted-2); line-height: 1.45;
    }
    .home-widget-chart .viz-chart-wrap,
    .dash-widget-chart .viz-chart-wrap {
      margin: 0; padding: 0; overflow: hidden;
    }
    .home-widget-chart .viz-chart,
    .dash-widget-chart .viz-chart {
      min-width: 0; width: 100%; max-height: 170px;
    }
    .home-widget-chart .donut-wrap,
    .dash-widget-chart .donut-wrap { gap: 10px; padding: 0; }
    .home-widget-chart .donut,
    .dash-widget-chart .donut {
      width: 96px; height: 96px;
    }
    .home-widget-chart .donut::after,
    .dash-widget-chart .donut::after { inset: 26%; }
    .home-widget-chart .donut-center strong,
    .dash-widget-chart .donut-center strong { font-size: 1rem; }
    .home-widget-chart .donut-legend,
    .dash-widget-chart .donut-legend { min-width: 0; }
    .home-widget-chart .donut-legend li,
    .dash-widget-chart .donut-legend li {
      font-size: 0.72rem; margin-bottom: 4px;
    }
    .home-widget-chart .chart-bar-row,
    .dash-widget-chart .chart-bar-row {
      margin-bottom: 6px; gap: 8px;
    }
    .home-widget-chart .chart-bar-label,
    .dash-widget-chart .chart-bar-label { font-size: 0.76rem; }
    .home-widget-chart .chart-bar-val,
    .dash-widget-chart .chart-bar-val { font-size: 0.76rem; }
    .home-widget-chart .chart-empty,
    .dash-widget-chart .chart-empty {
      margin: 0; font-size: 0.82rem; color: var(--muted);
    }
    .dash-widget-chart .roi-hero { padding: 10px 12px; margin-bottom: 8px; }
    .dash-widget-chart .roi-hero-badge { min-width: 72px; padding: 8px 10px; }
    .dash-widget-chart .roi-hero-badge strong { font-size: 1.25rem; }
    .dash-widget-chart .roi-hero-text p { font-size: 0.82rem; }
    .dash-widget-chart .roi-table td { padding: 7px 4px; font-size: 0.8rem; }