/* common/css/ode-first-order.css — layout for the first-order ODE calculator */
.ode-controls form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ode-field-grid {
  display: grid;
  gap: 1rem;
}

.ode-field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
}

.ode-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 180px;
  flex: 1 1 180px;
}

fieldset.ode-field {
  border: 0;
  padding: 0;
  margin: 0;
}

.ode-field input,
.ode-field select {
  width: 100%;
  padding: 0.4rem 0.55rem;
  font-size: 0.95rem;
  font-family: inherit;
}

.ode-ic-grid,
.ode-window-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.ode-window-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.ode-grid-pair {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
}

.ode-grid-pair input {
  width: 80px;
}

.ode-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.ode-actions .button[data-shared='true']::after {
  content: attr(data-shared-label);
  margin-left: 0.5rem;
  font-size: 0.85em;
  color: var(--accent-color, #0b62d6);
}

#ode-error {
  color: #b00020;
  font-weight: 600;
}

#ode-error[hidden] {
  display: none;
}

.ode-grid-two {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: start;
}

.ode-canvas-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ode-canvas-wrapper canvas {
  width: 100%;
  height: auto;
  border: 1px solid #dde2e6;
  border-radius: 6px;
  background: #fafafa;
}

.ode-legend {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 0.6rem;
  align-items: center;
  margin-top: 0.75rem;
}

.ode-legend-color {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  display: inline-block;
}

.ode-legend-main {
  background: #146a5c;
}

.ode-legend-rk4 {
  background: #a63f33;
}

.ode-legend-extra {
  background: #0b62d6;
  border: 2px dashed #0b62d6;
  box-sizing: border-box;
}

.ode-kv {
  display: grid;
  grid-template-columns: 7.5rem auto;
  gap: 0.35rem 0.75rem;
  align-items: baseline;
}

.ode-mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
  font-size: 0.95em;
}

.ode-teacher-notes {
  margin: 0;
  padding-left: 1.1rem;
}

.ode-related-fallback {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 980px) {
  .ode-grid-two {
    grid-template-columns: 1fr;
  }
}