.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 12px;
}

.summary-card {
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 10px 12px;
  background: #f8fafc;
}

.summary-label {
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #64748b;
  font-weight: 700;
}

.summary-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
}

.chart-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.chart-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.chart-toggle-label {
  font-size: 0.9rem;
  color: #334155;
  user-select: none;
}

.chart-head small {
  font-size: 0.95rem;
}

.trend-chart-wrap {
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #ffffff;
  padding: 10px;
  min-height: 450px;
  position: relative;
}

.trend-line-tooltip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  background: rgba(15, 23, 42, 0.9);
  color: #f8fafc;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 8px;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
  white-space: nowrap;
}

.trend-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  min-height: 375px;
}

.trend-chart {
  width: 100%;
  height: 425px;
}

.axis-line {
  stroke: #cbd5e1;
  stroke-width: 1;
}

.grid-line {
  stroke: #e5e7eb;
  stroke-width: 1;
}

.axis-label {
  fill: #64748b;
  font-size: 14px;
  font-weight: 600;
}

.overlay-line {
  fill: none;
  stroke-width: 2;
  opacity: 0.72;
  transition: stroke-width 0.12s ease, opacity 0.12s ease;
}

.overlay-line.is-hovered {
  stroke-width: 3.5;
  opacity: 1;
}

.average-line {
  fill: none;
  stroke: #0f172a;
  stroke-width: 2.4;
  stroke-dasharray: 8 5;
}

.current-costs-table-wrap {
  overflow: visible;
}

.current-costs-table {
  min-width: 100%;
}

.current-costs-table tbody tr.group-row {
  background: #eef4f8;
}

.current-costs-table tbody tr.group-row td {
  font-weight: 700;
  color: #1f2937;
  border-top: 1px solid #d7e1ea;
  border-bottom: 1px solid #d7e1ea;
  padding: 10px 12px;
}

.group-toggle {
  border: none;
  background: none;
  color: #0f172a;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
}

.current-costs-table .status-pill {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.status-pill.green {
  background: #d1e7dd;
  color: #0f5132;
}

.status-pill.yellow {
  background: #fff3cd;
  color: #7a5a00;
}

.status-pill.red {
  background: #f8d7da;
  color: #842029;
}

.delta-up {
  color: #b91c1c;
  font-weight: 700;
}

.delta-down {
  color: #166534;
  font-weight: 700;
}

.line-key {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.line-swatch {
  width: 22px;
  height: 0;
  border-top: 3px solid #0ea5e9;
  border-radius: 999px;
  display: inline-block;
}

#exitChartOnlyBtn {
  display: none;
}

body.chart-only-mode #openChartOnlyBtn {
  display: none;
}

body.chart-only-mode #exitChartOnlyBtn {
  display: inline-block;
}

body.chart-only-mode main.container > .card:not(.chart-only-card) {
  display: none;
}

body.chart-only-mode main.container {
  max-width: 100%;
  width: 100%;
  padding-left: 12px;
  padding-right: 12px;
}

body.chart-only-mode .chart-only-card {
  margin-top: 18px;
}

body.chart-only-mode .trend-chart-wrap {
  min-height: 90vh;
}

body.chart-only-mode .trend-chart {
  height: 85vh;
}

@media (max-width: 992px) {
  .summary-grid {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }
}

@media (max-width: 768px) {
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .chart-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .chart-controls {
    flex-wrap: wrap;
    gap: 8px 12px;
  }
}