  /* Interactive bar chart — hover grow + selection + floating detail panel.
     Shared rules for tile .chart .bar and .chart-tall .bar. */
  .chart .bar, .chart-tall .bar {
    cursor: pointer;
    transform-origin: 50% 100%;
    transition:
      transform 0.18s cubic-bezier(0.22, 1, 0.36, 1),
      filter 0.18s ease,
      background 0.15s ease,
      box-shadow 0.18s ease;
  }
  @media (hover: hover) {
    .chart .bar:hover, .chart-tall .bar:hover {
      transform: translateY(-2px) scaleX(1.4);
      filter: brightness(1.3) saturate(1.1);
      z-index: 2;
    }
  }
  .chart .bar.selected, .chart-tall .bar.selected {
    filter: brightness(1.35) saturate(1.15);
    background: linear-gradient(180deg, #4ea892 0%, #225e46 100%);
    box-shadow: 0 0 0 1px rgba(110,150,135,0.6), 0 2px 6px rgba(0,0,0,0.45);
    transform: translateY(-2px) scaleX(1.25);
    z-index: 2;
  }
  .chart .bar.drag-target, .chart-tall .bar.drag-target {
    filter: brightness(1.5) saturate(1.2);
  }
  /* Floating bar-detail panel — single instance appended to <body>. */
  .bar-detail {
    position: fixed;
    z-index: 10001;
    top: -9999px; left: -9999px;
    min-width: 96px;
    padding: 8px 10px;
    border-radius: var(--r-sm);
    background: linear-gradient(180deg, rgba(36,52,46,0.97), rgba(20,36,30,0.97));
    border: 1px solid rgba(110,150,135,0.4);
    box-shadow: 0 8px 22px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.02) inset;
    color: var(--text);
    pointer-events: none;
    opacity: 0;
    transform: scale(0.92) translateY(4px);
    transform-origin: 50% 100%;
    transition: opacity 0.16s ease, transform 0.20s cubic-bezier(0.22, 1, 0.36, 1);
    display: flex; flex-direction: column; gap: 6px;
  }
  .bar-detail.show { opacity: 1; transform: none; }
  .bar-detail-row {
    display: flex; align-items: center; gap: 8px;
    font-variant-numeric: tabular-nums;
  }
  .bar-detail-row .ic {
    width: 16px; height: 16px;
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--dim);
    pointer-events: auto;
  }
  .bar-detail-row .ic svg { width: 14px; height: 14px; display: block; }
  .bar-detail-row .num {
    font-size: 13px; font-weight: 600;
    color: var(--text);
    letter-spacing: 0.2px;
  }
  .bar-detail .hint {
    font-size: 10px; color: var(--dim); opacity: 0.7;
    text-align: center; letter-spacing: 0.3px;
  }
  /* touch-action на chart-tall для pointer-drag по барам */
  .chart-tall {
    touch-action: none;
  }
