.planar-app .lab-stage-shell {
  width: min(1920px, calc(100% - 2rem));
}

.planar-app-layout {
  grid-template-columns: minmax(300px, 330px) minmax(0, 1fr);
}

.planar-app .control-panel {
  max-height: calc(100vh - 104px);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.planar-app .control-panel > p {
  font-size: 0.88rem;
  line-height: 1.55;
}

.planar-app .control-group legend,
.planar-app .field-label {
  font-size: 0.7rem;
}

.planar-app .field-label {
  letter-spacing: 0.035em;
  text-transform: none;
}

.planar-app .math-symbol,
.system-inline {
  text-transform: none;
}

.system-inline {
  white-space: nowrap;
}

.nowrap {
  white-space: nowrap;
}

.planar-app .control-panel select,
.planar-app .control-panel input[type="number"] {
  width: 100%;
  min-height: 44px;
  box-sizing: border-box;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--hairline);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
}

.planar-app .control-panel input[type="number"] {
  font-family: var(--mono);
  font-size: 0.92rem;
}

.planar-app .control-panel input[type="range"] {
  width: 100%;
}

.planar-app .lab-button {
  min-height: 44px;
}

.planar-app .check-row {
  min-height: 44px;
  box-sizing: border-box;
}

.full-width-button {
  width: 100%;
  margin-top: 0.65rem;
}

.control-row-spaced,
.field-label-spaced {
  margin-top: 0.8rem;
}

.control-help,
.keyboard-help {
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

.control-help {
  margin: 0.62rem 0 0;
}

.keyboard-help {
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--hairline);
}

.equation-card {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.8rem;
  padding: 0.85rem;
  border: 1px solid rgba(11, 87, 72, 0.22);
  background: #f0eee5;
}

.equation-card > span,
.equation-card > small {
  color: var(--forest);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

.equation-card > span {
  text-transform: uppercase;
}

.equation-card > small {
  color: var(--muted);
  letter-spacing: 0.015em;
  line-height: 1.45;
}

.equation-pair {
  display: grid;
  gap: 0.22rem;
}

.equation-pair code {
  overflow-wrap: anywhere;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 0.98rem;
  line-height: 1.4;
}

.numeric-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.numeric-pair label {
  display: grid;
  min-width: 0;
  gap: 0.35rem;
  color: var(--forest);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.object-details {
  margin-top: 0.7rem;
  border-top: 1px solid var(--hairline);
}

.object-details summary {
  min-height: 44px;
  padding-top: 0.72rem;
  color: var(--forest);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.7rem;
}

.object-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border: 1px solid var(--hairline);
  list-style: none;
}

.object-list li {
  display: grid;
  gap: 0.18rem;
  padding: 0.62rem 0.7rem;
  border-bottom: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.42;
}

.object-list li:last-child {
  border-bottom: 0;
}

.object-list strong {
  color: var(--ink);
  font-weight: 500;
}

.planar-stage {
  min-width: 0;
}

.planar-stage-heading {
  align-items: center;
}

.stage-heading-status {
  display: grid;
  justify-items: end;
  gap: 0.55rem;
}

.stage-heading-status > p {
  margin: 0;
}

.stage-heading-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.7rem;
}

.stage-heading-toolbar > p {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.workspace-fullscreen-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  border-color: rgba(11, 87, 72, 0.35);
  color: var(--forest);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-transform: uppercase;
}

.workspace-fullscreen-toggle[hidden] {
  display: none;
}

.stage-mini-telemetry {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 0.85rem;
}

.stage-mini-telemetry > span {
  display: inline-flex;
  align-items: baseline;
  gap: 0.28rem;
  white-space: nowrap;
}

.stage-mini-telemetry small {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.045em;
}

.stage-mini-telemetry strong {
  max-width: 180px;
  overflow: hidden;
  font-family: var(--serif);
  font-size: 0.82rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.planar-workbench {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(520px, 1.48fr) minmax(370px, 0.92fr);
  align-items: stretch;
  background: #0c2621;
}

.analysis-column {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-rows: minmax(270px, 1.12fr) minmax(235px, 0.96fr) minmax(145px, 0.52fr);
}

.visual-panel {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-rows: auto minmax(0, 1fr);
  border-bottom: 1px solid rgba(23, 33, 29, 0.17);
  background: #f4f1e7;
}

.phase-panel {
  grid-template-rows: auto minmax(0, 1fr) auto;
  border-right: 1px solid rgba(235, 247, 243, 0.18);
  background: #071c18;
  color: #fffdf7;
}

.stability-panel {
  background: #09211d;
  color: #fffdf7;
}

.time-panel {
  border-bottom: 0;
}

.panel-heading {
  display: flex;
  min-height: 64px;
  box-sizing: border-box;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.78rem 0.92rem;
  border-bottom: 1px solid rgba(23, 33, 29, 0.16);
  background: #ece8dd;
  color: var(--ink);
}

.panel-heading > div {
  display: grid;
  min-width: 0;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 0.58rem;
}

.panel-heading > div > span {
  color: var(--forest);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.panel-heading h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 500;
  line-height: 1.15;
}

.panel-heading p {
  max-width: 170px;
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.38;
  text-align: right;
}

.panel-heading-dark {
  border-bottom-color: rgba(235, 247, 243, 0.16);
  background: #0d2b25;
  color: #fffdf7;
}

.panel-heading-dark > div > span {
  color: #79d8c5;
}

.panel-heading-dark p {
  color: rgba(235, 247, 243, 0.72);
}

.panel-heading-compact {
  min-height: 52px;
  padding-top: 0.62rem;
  padding-bottom: 0.62rem;
}

.panel-heading-compact h3 {
  font-size: 1rem;
}

.canvas-frame {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.canvas-frame canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.phase-frame {
  min-height: clamp(550px, 49vw, 740px);
  background:
    radial-gradient(circle at 50% 46%, rgba(22, 88, 75, 0.26), transparent 58%),
    #071c18;
}

.bifurcation-frame {
  min-height: 0;
  background: #f4f1e7;
}

.eigenvalue-frame {
  min-height: 0;
  background: #071c18;
}

.time-frame {
  min-height: 0;
  background: #f4f1e7;
}

#phase-canvas,
#bifurcation-canvas {
  position: absolute;
  inset: 0;
  touch-action: none;
}

#phase-canvas {
  cursor: crosshair;
}

#bifurcation-canvas {
  cursor: ew-resize;
}

#phase-canvas[data-dragging="pan"],
#bifurcation-canvas[data-dragging="pan"] {
  cursor: grabbing;
}

#eigenvalue-canvas,
#time-canvas {
  position: absolute;
  inset: 0;
}

#phase-canvas:focus-visible {
  z-index: 4;
  outline: 3px solid #f2c969;
  outline-offset: -5px;
}

#bifurcation-canvas:focus-visible {
  z-index: 4;
  outline: 3px solid var(--forest);
  outline-offset: -5px;
}

.phase-axis-label,
.eigenvalue-axis-label {
  position: absolute;
  z-index: 2;
  color: rgba(235, 247, 243, 0.72);
  font-family: var(--serif);
  font-size: 0.86rem;
  pointer-events: none;
}

.phase-axis-x {
  right: 0.8rem;
  top: 50%;
}

.phase-axis-y {
  top: 0.6rem;
  left: 50%;
}

.eigenvalue-real {
  right: 0.52rem;
  top: 50%;
}

.eigenvalue-imaginary {
  top: 0.42rem;
  left: 50%;
}

.phase-legend,
.bifurcation-legend,
.time-legend {
  position: absolute;
  z-index: 3;
  right: 0.65rem;
  bottom: 0.62rem;
  left: 0.65rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.48rem 0.82rem;
  padding: 0.46rem 0.58rem;
  border: 1px solid rgba(235, 247, 243, 0.18);
  background: rgba(7, 28, 24, 0.84);
  color: rgba(255, 253, 247, 0.82);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.025em;
  pointer-events: none;
}

.bifurcation-legend,
.time-legend {
  border-color: rgba(23, 33, 29, 0.18);
  background: rgba(244, 241, 231, 0.9);
  color: var(--ink);
}

.time-legend {
  top: 0.42rem;
  right: 0.5rem;
  bottom: auto;
  left: auto;
  padding: 0.3rem 0.42rem;
}

.phase-legend span,
.bifurcation-legend span,
.time-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
}

.phase-legend span[hidden] {
  display: none;
}

.marker,
.line {
  display: inline-block;
  flex: 0 0 auto;
}

.marker {
  width: 8px;
  height: 8px;
  box-sizing: border-box;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.marker-sink {
  background: currentColor;
}

.marker-source {
  background: transparent;
}

.marker-saddle {
  border-radius: 0;
  transform: rotate(45deg);
}

.marker-nonhyperbolic {
  border-radius: 0;
  background: transparent;
}

.line {
  width: 18px;
  height: 0;
  border-top: 2px solid currentColor;
}

.line-cycle-unstable,
.line-repelling {
  border-top-style: dashed;
}

.line-homoclinic {
  color: #f2c969;
}

.line-saddle-branch {
  height: 2px;
  border-top: 0;
  background: repeating-linear-gradient(
    90deg,
    currentColor 0 7px,
    transparent 7px 10px,
    currentColor 10px 12px,
    transparent 12px 16px
  );
}

.plot-controls {
  position: absolute;
  z-index: 5;
  top: 0.55rem;
  right: 0.55rem;
  display: flex;
  max-width: calc(100% - 1.1rem);
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px;
}

.plot-controls button {
  display: inline-grid;
  width: 30px;
  height: 30px;
  min-height: 0;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(235, 247, 243, 0.2);
  border-radius: 0;
  background: rgba(7, 28, 24, 0.84);
  color: rgba(255, 253, 247, 0.9);
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1;
}

.bifurcation-plot-controls button {
  border-color: rgba(23, 33, 29, 0.18);
  background: rgba(244, 241, 231, 0.92);
  color: var(--forest);
}

.plot-controls button:hover {
  background: #17483e;
  color: #fffdf7;
}

.line-x {
  color: #0b7561;
}

.line-y {
  color: #b66b3f;
  border-top-style: dashed;
}

.selected-object-bar {
  display: flex;
  min-height: 54px;
  box-sizing: border-box;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.2rem;
  padding: 0.72rem 0.95rem;
  border-top: 1px solid rgba(235, 247, 243, 0.16);
  background: #0d2b25;
}

.selected-object-bar span {
  color: #79d8c5;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.selected-object-bar strong {
  color: rgba(255, 253, 247, 0.88);
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: right;
}

.stability-grid {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-columns: minmax(150px, 0.9fr) minmax(195px, 1.1fr);
}

.stability-readout {
  min-width: 0;
  padding: 0.72rem 0.78rem;
  overflow: auto;
  border-left: 1px solid rgba(235, 247, 243, 0.16);
  background: #0d2b25;
  scrollbar-gutter: stable;
}

.jacobian-block {
  display: grid;
  gap: 0.34rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(235, 247, 243, 0.16);
}

.jacobian-block > span,
.stability-values dt {
  color: rgba(121, 216, 197, 0.82);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.jacobian-block code {
  overflow-wrap: anywhere;
  color: #fffdf7;
  font-family: var(--serif);
  font-size: 0.78rem;
  line-height: 1.4;
}

.stability-values {
  display: grid;
  gap: 0;
  margin: 0;
}

.stability-values > div {
  display: grid;
  grid-template-columns: minmax(72px, 0.72fr) minmax(0, 1.28fr);
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(235, 247, 243, 0.1);
}

.stability-values > div:last-child {
  border-bottom: 0;
}

.stability-values dd {
  margin: 0;
  color: rgba(255, 253, 247, 0.9);
  font-family: var(--serif);
  font-size: 0.77rem;
  line-height: 1.3;
  text-align: right;
}

.method-notes {
  border: 1px solid var(--hairline);
  background: var(--white);
}

.method-notes summary {
  min-height: 52px;
  box-sizing: border-box;
  padding: 1rem 1.2rem;
  color: var(--forest);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.method-notes .app-note {
  margin: 0 1.2rem 1rem;
}

@media (max-width: 1320px) {
  .planar-app-layout {
    grid-template-columns: 1fr;
  }

  .planar-app .control-panel {
    position: static;
    display: grid;
    max-height: none;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 1.2rem;
    overflow: visible;
  }

  .planar-app .control-panel > h2,
  .planar-app .control-panel > p,
  .keyboard-help {
    grid-column: 1 / -1;
  }

  .phase-frame {
    min-height: clamp(560px, 57vw, 740px);
  }
}

@media (max-width: 1060px) {
  .planar-workbench {
    grid-template-columns: 1fr;
  }

  .phase-panel {
    border-right: 0;
  }

  .phase-frame {
    min-height: min(74vw, 720px);
  }

  .analysis-column {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: minmax(330px, auto) minmax(170px, auto);
  }

  .bifurcation-panel,
  .stability-panel {
    min-height: 330px;
  }

  .bifurcation-panel {
    border-right: 1px solid var(--hairline);
  }

  .time-panel {
    min-height: 170px;
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .planar-app .control-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .object-controls {
    grid-column: 1 / -1;
  }

  .analysis-column {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .bifurcation-panel {
    min-height: 380px;
    border-right: 0;
  }

  .stability-panel {
    min-height: 340px;
  }

  .time-panel {
    min-height: 190px;
    grid-column: auto;
  }
}

@media (max-width: 700px) {
  .planar-app .lab-stage-shell {
    width: min(100% - 0.75rem, 1920px);
  }

  .planar-app .control-panel {
    grid-template-columns: 1fr;
  }

  .planar-app .control-panel > h2,
  .planar-app .control-panel > p,
  .keyboard-help,
  .object-controls {
    grid-column: auto;
  }

  .planar-stage-heading {
    align-items: flex-start;
  }

  .stage-heading-status {
    width: 100%;
    justify-items: start;
  }

  .stage-heading-toolbar {
    width: 100%;
    align-items: flex-start;
    justify-content: space-between;
  }

  .stage-mini-telemetry {
    justify-content: flex-start;
  }

  .panel-heading {
    min-height: 74px;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
  }

  .panel-heading p {
    max-width: none;
    text-align: left;
  }

  .phase-frame {
    min-height: min(92vw, 620px);
  }

  .phase-legend {
    right: 0.42rem;
    bottom: 0.42rem;
    left: 0.42rem;
  }

  .selected-object-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .selected-object-bar strong {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .numeric-pair,
  .stability-grid {
    grid-template-columns: 1fr;
  }

  .phase-frame {
    min-height: 390px;
  }

  .bifurcation-panel {
    min-height: 350px;
  }

  .stability-panel {
    min-height: 520px;
  }

  .eigenvalue-frame {
    min-height: 280px;
  }

  .stability-readout {
    border-top: 1px solid rgba(235, 247, 243, 0.16);
    border-left: 0;
  }

  .time-panel {
    min-height: 210px;
  }

}

#planar-workspace.is-fullscreen {
  box-sizing: border-box;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  grid-template-columns: minmax(290px, 330px) minmax(0, 1fr);
  align-items: stretch;
  gap: 0.72rem;
  padding: max(0.62rem, env(safe-area-inset-top)) max(0.62rem, env(safe-area-inset-right)) max(0.62rem, env(safe-area-inset-bottom)) max(0.62rem, env(safe-area-inset-left));
  overflow: hidden;
  background: #e9e4d7;
}

#planar-workspace:fullscreen::backdrop,
#planar-workspace:-webkit-full-screen::backdrop {
  background: #e9e4d7;
}

#planar-workspace.is-fullscreen .control-panel {
  position: static;
  display: block;
  height: 100%;
  min-height: 0;
  max-height: none;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

#planar-workspace.is-fullscreen .stage-stack {
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

#planar-workspace.is-fullscreen .planar-stage {
  display: grid;
  height: 100%;
  min-height: 0;
  grid-template-rows: auto minmax(0, 1fr);
}

#planar-workspace.is-fullscreen .stage-heading {
  padding: 0.72rem 0.9rem;
}

#planar-workspace.is-fullscreen .method-notes {
  display: none;
}

#planar-workspace.is-fullscreen .planar-workbench {
  min-height: 0;
  grid-template-columns: minmax(480px, 1.48fr) minmax(350px, 0.92fr);
}

#planar-workspace.is-fullscreen .phase-panel,
#planar-workspace.is-fullscreen .analysis-column,
#planar-workspace.is-fullscreen .visual-panel {
  min-height: 0;
}

#planar-workspace.is-fullscreen .analysis-column {
  grid-template-rows: minmax(230px, 1.1fr) minmax(205px, 0.95fr) minmax(125px, 0.5fr);
}

#planar-workspace.is-fullscreen .phase-frame,
#planar-workspace.is-fullscreen .bifurcation-frame,
#planar-workspace.is-fullscreen .eigenvalue-frame,
#planar-workspace.is-fullscreen .time-frame {
  min-height: 0;
}

@media (max-width: 1179px) {
  #planar-workspace.is-fullscreen {
    grid-template-columns: minmax(250px, 285px) minmax(0, 1fr);
  }

  #planar-workspace.is-fullscreen .stage-stack {
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
  }

  #planar-workspace.is-fullscreen .planar-stage {
    display: block;
    height: auto;
  }

  #planar-workspace.is-fullscreen .planar-workbench {
    grid-template-columns: 1fr;
  }

  #planar-workspace.is-fullscreen .phase-frame {
    min-height: 560px;
  }

  #planar-workspace.is-fullscreen .analysis-column {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: minmax(330px, auto) minmax(170px, auto);
  }

  #planar-workspace.is-fullscreen .time-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 719px) {
  #planar-workspace.is-fullscreen {
    display: block;
    overflow-y: auto;
  }

  #planar-workspace.is-fullscreen .control-panel,
  #planar-workspace.is-fullscreen .stage-stack {
    height: auto;
    overflow: visible;
  }

  #planar-workspace.is-fullscreen .stage-stack {
    margin-top: 0.72rem;
  }

  #planar-workspace.is-fullscreen .phase-frame {
    min-height: min(90vw, 560px);
  }

  #planar-workspace.is-fullscreen .analysis-column {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  #planar-workspace.is-fullscreen .time-panel {
    grid-column: auto;
  }
}

@media (forced-colors: active) {
  #phase-canvas,
  #bifurcation-canvas,
  #eigenvalue-canvas,
  #time-canvas {
    border: 2px solid CanvasText;
  }

}

@media (any-pointer: coarse) {
  #phase-canvas,
  #bifurcation-canvas {
    touch-action: pan-y;
  }

  .plot-controls button {
    width: 44px;
    height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #phase-canvas,
  #bifurcation-canvas,
  #eigenvalue-canvas,
  #time-canvas {
    scroll-behavior: auto;
  }
}