.chart-range-switch {
  display: inline-grid;
  grid-template-columns: repeat(3, minmax(64px, 1fr));
  gap: 4px;
  margin-top: 12px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.chart-range-button {
  min-height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
}

.chart-range-button:hover {
  background: #eef2f7;
  color: var(--text);
}

.chart-range-button.active {
  background: var(--accent);
  color: #ffffff;
}

@media (max-width: 860px) {
  .chart-dialog {
    width: calc(100vw - 16px);
    max-height: 94dvh;
  }

  .chart-header {
    gap: 10px;
    padding: 16px 14px 14px;
  }

  .chart-header h2 {
    font-size: 24px;
    line-height: 1.25;
  }

  .chart-header p {
    max-width: 72vw;
    font-size: 14px;
    line-height: 1.45;
  }

  .icon-button {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    font-size: 28px;
  }

  .chart-range-switch {
    width: min(100%, 360px);
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .chart-range-button {
    min-height: 36px;
    padding: 0 8px;
    font-size: 14px;
  }

  .chart-canvas-wrap {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
  }

  #chartCanvas {
    width: 900px;
    max-width: none;
    height: 460px;
  }

  .chart-stats {
    gap: 8px;
  }

  .chart-stats span {
    min-height: auto;
    font-size: 12px;
  }
}

@media (max-width: 430px) {
  .chart-modal {
    padding: 6px;
  }

  .chart-header h2 {
    font-size: 22px;
  }

  .chart-header p {
    max-width: 68vw;
    font-size: 13px;
  }

  .chart-range-switch {
    width: 100%;
  }

  #chartCanvas {
    width: 840px;
    height: 430px;
  }
}