/* ── Chart card ───────────────────────────────────────────── */
.chart-card {
  background: var(--color-background, #fff);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, 12px);
  padding: var(--space-md, 16px);
  margin: var(--space-lg, 24px) 0;
}
.chart-empty { margin: var(--space-lg, 24px) 0; }

/* ── Period pill selector ─────────────────────────────────── */
.chart-controls { margin: var(--space-md, 16px) 0; }
.pill-selector { display: inline-flex; gap: 4px; background: var(--color-border-light, #f0f0f0); padding: 4px; border-radius: 999px; }
.pill-option {
  padding: 6px 14px; border-radius: 999px; font-size: 0.875rem;
  color: var(--color-text-secondary, #555); text-decoration: none; transition: all 0.15s;
}
.pill-option.active { background: var(--color-primary-light, #2e7d32); color: #fff; }

/* ── Legend ───────────────────────────────────────────────── */
.chart-legend { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md, 16px); margin-bottom: var(--space-sm, 8px); font-size: 0.8125rem; color: var(--color-text-secondary, #555); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-swatch { width: 18px; height: 3px; border-radius: 2px; display: inline-block; }
.legend-price { background: var(--color-primary-light, #2e7d32); }
.legend-seasonal { background: repeating-linear-gradient(90deg, #b8860b 0 6px, transparent 6px 9px); }
.legend-toggle { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }

/* ── Seasonality toggle (hidden via CSS, no D3 redraw) ────── */
.seasonal-hidden .seasonal-line { display: none; }

/* ── D3 tooltip (used by d3_line_chart_controller) ────────── */
.d3-tooltip {
  position: absolute; pointer-events: none; background: rgba(33, 33, 33, 0.92);
  color: #fff; padding: 6px 10px; border-radius: 6px; font-size: 0.75rem;
  line-height: 1.4; white-space: nowrap; z-index: 10;
}

/* ── Reactive /precos filter ──────────────────────────────── */
.precos-filter { margin: var(--space-md, 16px) 0; }
.precos-filter .form-control { max-width: 360px; width: 100%; }