.container {
  max-width: 1200px;
  margin: 1.5rem auto;
  padding: 0 1rem;
  display: grid;
  gap: 1.5rem;
}

.canvas-holder{ margin-top:.8rem; }


.card {
  background: var(--card);
  padding: 1rem;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(20,18,40,0.05);
}

.controls {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.controls label {
  font-size: 0.95rem;
  color: var(--muted);
}

.controls input[type="number"] {
  width: 90px;
  padding: 0.45rem;
  border-radius: 8px;
  border: 1px solid #d0d6e0;
  text-align: center;
}

.two-col-layout.charts-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.two-col-layout.charts-section .chart-card {
  flex: 1 1 calc(50% - 0.5rem); /* two columns with gap compensation */
  min-width: 300px;
}

@media (max-width: 900px) {
  .two-col-layout.charts-section .chart-card {
    flex: 1 1 100%; /* stack cards on small screens */
  }
}