:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: #1f2521;
  background: #e7e9e6;
  font-synthesis: none;
  --ink: #1f2521;
  --muted: #5e675f;
  --line: #aeb5ae;
  --line-dark: #737c74;
  --paper: #f7f8f5;
  --paper-alt: #eef0ec;
  --green: #245e3d;
  --red: #8b352d;
  --blue: #2f536d;
  --network: #101612;
}

* {
  box-sizing: border-box;
}

html {
  background: #e7e9e6;
}

body {
  min-width: 0;
  margin: 0;
  color: var(--ink);
  background: #e7e9e6;
  font-size: 0.875rem;
  line-height: 1.45;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

button,
select,
input,
progress {
  font: inherit;
}

button,
select {
  min-height: 2.25rem;
  border: 1px solid var(--line-dark);
  border-radius: 0;
  color: var(--ink);
  background: #fff;
}

button {
  padding: 0.45rem 0.75rem;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: #e8ebe7;
}

button:disabled {
  color: #858b86;
  background: #e1e4e0;
  cursor: not-allowed;
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
.source-view:focus-visible,
a:focus-visible,
#training-stage-title:focus-visible {
  outline: 2px solid #376f92;
  outline-offset: 2px;
}

.primary-button {
  border-color: #1f4d33;
  color: #fff;
  background: var(--green);
  font-weight: 700;
}

.primary-button:hover:not(:disabled) {
  background: #1f5136;
}

.app-shell {
  width: min(1400px, calc(100% - 1.5rem));
  margin: 0 auto;
}

.lab-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  min-height: 3.25rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line-dark);
  border-left: 1px solid var(--line);
  padding: 0.45rem 0.75rem;
  background: var(--paper);
}

.brand {
  color: var(--ink);
  font: 700 1rem/1 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.runtime-readout {
  display: flex;
  align-items: baseline;
  justify-self: end;
  gap: 0.55rem;
  min-width: 0;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.runtime-readout > span {
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#runtime-status,
#network-status,
#model-status,
#recognition-model-status {
  font-variant-numeric: tabular-nums;
}

.is-ready {
  color: var(--green);
}

.is-error {
  color: var(--red);
}

#source-button {
  min-height: 2rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.75rem;
}

.lab-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(20rem, 2fr);
  align-items: start;
  gap: 0.75rem;
  padding: 0.75rem 0 1.25rem;
}

.control-panel,
.network-panel {
  min-width: 0;
  border: 1px solid var(--line-dark);
  background: var(--paper);
}

.workflow-tabs {
  display: flex;
  border-bottom: 1px solid var(--line-dark);
  background: var(--paper-alt);
}

.tab {
  min-width: 7rem;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 2px solid transparent;
  padding: 0.6rem 1rem 0.5rem;
  background: transparent;
  font: 700 0.75rem/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tab:hover:not(:disabled) {
  background: #e2e6e1;
}

.tab.is-active {
  border-bottom-color: var(--green);
  color: #173c28;
  background: var(--paper);
}

.tab-panel {
  min-width: 0;
  padding: 1rem;
}

.panel-heading {
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.75rem;
}

.section-code {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font: 700 0.68rem/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.08em;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1,
h2 {
  margin: 0;
  color: var(--ink);
  line-height: 1.2;
}

h1 {
  font-size: 1.35rem;
}

h2 {
  font-size: 1rem;
}

.panel-heading > p:last-child {
  max-width: 44rem;
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.options-form fieldset {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.9rem 1rem;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  padding: 0.9rem;
}

.options-form legend {
  padding: 0 0.35rem;
  font: 700 0.72rem/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.field-group {
  display: grid;
  align-content: start;
  gap: 0.35rem;
  min-width: 0;
}

.field-wide {
  grid-column: 1 / -1;
}

.field-group label {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
}

.field-group select {
  width: 100%;
  min-width: 0;
  padding: 0.4rem 2rem 0.4rem 0.55rem;
}

.field-group input[type="range"] {
  width: 100%;
  margin: 0.35rem 0;
  accent-color: var(--green);
}

.field-group output,
.field-group small,
.status-copy,
.method-note {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.field-group output {
  color: var(--green);
}

.field-group small {
  color: var(--muted);
  font-size: 0.68rem;
}

.method-note {
  margin: 0.75rem 0 0;
  border: 1px solid var(--line);
  padding: 0.55rem 0.65rem;
  color: var(--muted);
  background: var(--paper-alt);
  font-size: 0.7rem;
}

.status-copy,
.startup-error {
  margin: 0.75rem 0 0;
  border-left: 2px solid var(--line-dark);
  padding: 0.35rem 0.55rem;
  font-size: 0.72rem;
}

.startup-error {
  border-left-color: var(--red);
  color: var(--red);
}

.setup-actions,
.stage-actions,
.canvas-actions,
.completion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.setup-actions {
  justify-content: flex-end;
  margin-top: 0.85rem;
}

.setup-actions button {
  min-width: 8rem;
}

.training-stage {
  min-height: 22rem;
}

.stage-heading,
.network-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.75rem;
}

.stage-status {
  display: grid;
  justify-items: end;
  gap: 0.25rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.training-readout {
  margin: 1rem 0;
}

.progress-copy {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.progress-copy span {
  flex: none;
  color: var(--muted);
}

progress {
  display: block;
  width: 100%;
  height: 0.75rem;
  border: 1px solid var(--line-dark);
  border-radius: 0;
  background: #dce0db;
}

progress::-webkit-progress-bar {
  background: #dce0db;
}

progress::-webkit-progress-value {
  background: var(--green);
}

progress::-moz-progress-bar {
  background: var(--green);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 0 1rem;
  border: 1px solid var(--line);
}

.metrics div {
  min-width: 0;
  padding: 0.65rem;
}

.metrics div + div {
  border-left: 1px solid var(--line);
}

.metrics dt {
  color: var(--muted);
  font: 0.65rem/1.3 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.metrics dd {
  margin: 0.2rem 0 0;
  font: 700 1.15rem/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.stage-actions {
  align-items: center;
}

.completion-actions {
  margin-left: auto;
}

.recognizer {
  display: grid;
  grid-template-columns: minmax(15rem, 0.9fr) minmax(16rem, 1.1fr);
  gap: 0.75rem;
}

.drawing-card,
.prediction-card {
  min-width: 0;
  border: 1px solid var(--line);
  padding: 0.75rem;
  background: #fff;
}

.card-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.45rem;
}

.card-heading h2,
.prediction-card h2 {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

#recognition-model-status {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
}

.canvas-shell {
  position: relative;
  width: min(100%, 20rem);
  margin: 0 auto;
  aspect-ratio: 1;
  border: 1px solid var(--line-dark);
  overflow: hidden;
  background: var(--network);
}

#drawing-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

#drawing-canvas.is-erasing {
  cursor: cell;
}

#canvas-message {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 1.25rem;
  color: #d4dbd5;
  background: rgb(16 22 18 / 90%);
  text-align: center;
  font: 0.7rem/1.5 ui-monospace, "SFMono-Regular", Consolas, monospace;
  pointer-events: none;
}

.recognition-panel:not(.is-disabled) #canvas-message {
  color: #aeb8b0;
  background: transparent;
}

.recognition-panel.has-ink #canvas-message {
  display: none;
}

.recognition-panel.is-disabled #drawing-canvas {
  cursor: not-allowed;
}

.canvas-actions {
  display: grid;
  width: min(100%, 20rem);
  margin: 0.5rem auto 0;
}

.drawing-tools,
.canvas-commands {
  display: flex;
  gap: 0.5rem;
}

.drawing-tools button,
.canvas-commands button {
  flex: 1;
}

.drawing-tools button[aria-pressed="true"] {
  border-color: var(--green);
  color: #173c28;
  background: #dfe7e0;
  font-weight: 700;
}

.prediction-card {
  display: grid;
  grid-template-columns: minmax(5rem, auto) minmax(0, 1fr);
  grid-template-rows: auto auto 1fr;
  gap: 0.4rem 1rem;
  align-content: start;
}

.prediction-card h2,
#prediction-digit,
#prediction-confidence {
  grid-column: 1;
}

#prediction-digit {
  display: block;
  color: var(--green);
  font: 700 3.75rem/1 ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

#prediction-confidence {
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.probabilities {
  display: grid;
  grid-row: 1 / 4;
  grid-column: 2;
  gap: 0.35rem;
  align-content: start;
}

.probability-row {
  display: grid;
  grid-template-columns: 0.8rem minmax(2.5rem, 1fr) 2.5rem;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
  color: var(--muted);
  font: 0.65rem/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.probability-track {
  height: 0.35rem;
  background: #dce1dc;
}

.probability-track span {
  display: block;
  width: 0;
  height: 100%;
  background: #657068;
}

.probability-row.is-winner {
  color: var(--green);
  font-weight: 700;
}

.probability-row.is-winner .probability-track span {
  background: var(--green);
}

.network-panel {
  position: sticky;
  top: 0.75rem;
  display: grid;
  align-content: start;
  max-height: calc(100vh - 1.5rem);
  overflow: auto;
}

.network-panel-header {
  align-items: center;
  padding: 0.75rem;
  background: var(--paper-alt);
}

#network-status {
  max-width: 52%;
  color: var(--muted);
  text-align: right;
  font: 0.66rem/1.35 ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.network-sample {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  margin: 0;
  border-bottom: 1px solid var(--line);
  padding: 0.75rem;
}

#network-sample-canvas {
  display: block;
  width: 4.5rem;
  height: 4.5rem;
  border: 1px solid var(--line-dark);
  background: var(--network);
  image-rendering: pixelated;
}

.network-sample figcaption {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.2rem 0.5rem;
  min-width: 0;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.network-sample figcaption span,
.network-sample figcaption small {
  color: var(--muted);
  font-size: 0.66rem;
}

.network-sample figcaption strong {
  grid-row: 1 / 3;
  grid-column: 2;
  align-self: center;
  color: var(--green);
  font-size: 1.5rem;
}

.network-sample figcaption small {
  overflow-wrap: anywhere;
}

#network-canvas {
  display: block;
  width: 100%;
  height: clamp(20rem, 49vh, 32.5rem);
  min-width: 0;
  background: var(--network);
}

.network-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  border-top: 1px solid var(--line-dark);
  padding: 0.55rem 0.75rem;
  color: var(--muted);
  background: var(--paper-alt);
  font: 0.63rem/1.35 ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.network-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.network-legend i {
  display: inline-grid;
  width: 0.9rem;
  height: 0.9rem;
  place-items: center;
  border: 1px solid currentColor;
  font-style: normal;
  line-height: 1;
}

.weight-positive {
  color: #29744a;
}

.weight-negative {
  color: #9a4037;
}

.network-panel-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.35rem 0.75rem;
  border-top: 1px solid var(--line);
  padding: 0.55rem 0.75rem;
  color: var(--muted);
  font: 0.65rem/1.35 ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

#network-shape {
  color: var(--ink);
}

#storage-status {
  text-align: right;
}

#source-dialog {
  width: min(70rem, calc(100% - 1.5rem));
  height: min(50rem, calc(100vh - 1.5rem));
  max-width: none;
  max-height: none;
  margin: auto;
  border: 1px solid #000;
  border-radius: 0;
  padding: 0;
  color: #fff;
  background: #c0c0c0;
}

#source-dialog::backdrop {
  background: rgb(0 0 0 / 55%);
}

.source-window {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  width: 100%;
  height: 100%;
  font-family: "Courier New", Courier, monospace;
}

.source-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2rem;
  border-bottom: 1px solid #000;
  padding: 0.2rem 0.3rem 0.2rem 0.65rem;
  color: #000;
  background: #55ffff;
  font-size: 0.78rem;
}

.source-titlebar form {
  margin: 0;
}

#source-close-button {
  min-height: 1.5rem;
  border: 1px solid #000;
  padding: 0.15rem 0.55rem;
  color: #000;
  background: #c0c0c0;
  font: inherit;
}

.source-menubar {
  border-bottom: 1px solid #000;
  padding: 0.2rem 0.65rem;
  color: #000;
  background: #c0c0c0;
  font-size: 0.75rem;
  white-space: nowrap;
  overflow-x: auto;
}

.source-view {
  min-width: 0;
  min-height: 0;
  margin: 0;
  border: 0;
  border-radius: 0;
  padding: 0.75rem;
  overflow: auto;
  color: #fff;
  background: #0000aa;
  font: 0.78rem/1.5 "Courier New", Courier, monospace;
  tab-size: 4;
}

.source-view code {
  display: block;
  min-width: max-content;
}

.tok-comment,
.tok-type,
.tok-preprocessor {
  color: #55ffff;
}

.tok-keyword,
.tok-string {
  color: #ffff55;
}

.tok-number {
  color: #fff;
}

.source-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid #000;
  padding: 0.25rem 0.65rem;
  color: #000;
  background: #55ffff;
  font-size: 0.72rem;
}

.source-footer a {
  flex: none;
  color: #000;
}

@media (max-width: 800px) {
  .lab-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .network-panel {
    position: static;
    max-height: none;
    overflow: visible;
  }

  #network-canvas {
    height: 24rem;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: 100%;
  }

  .lab-header {
    gap: 0.5rem;
    border-right: 0;
    border-left: 0;
    padding-inline: 0.6rem;
  }

  .lab-layout {
    gap: 0.6rem;
    padding-top: 0.6rem;
  }

  .control-panel,
  .network-panel {
    border-right: 0;
    border-left: 0;
  }

  .tab {
    flex: 1;
    min-width: 0;
    min-height: 2.75rem;
  }

  .tab-panel {
    padding: 0.75rem;
  }

  .options-form fieldset,
  .recognizer {
    grid-template-columns: minmax(0, 1fr);
  }

  .field-wide {
    grid-column: 1;
  }

  .setup-actions button,
  .completion-actions button {
    flex: 1;
    min-width: 0;
  }

  .stage-heading,
  .progress-copy {
    display: grid;
  }

  .stage-status {
    justify-items: start;
  }

  .progress-copy span {
    flex: auto;
  }

  .metrics {
    grid-template-columns: minmax(0, 1fr);
  }

  .metrics div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .completion-actions {
    width: 100%;
    margin-left: 0;
  }

  .prediction-card {
    grid-template-columns: 4.75rem minmax(0, 1fr);
  }

  #network-canvas {
    height: 21rem;
  }

  #source-dialog {
    width: calc(100% - 0.5rem);
    height: calc(100vh - 0.5rem);
  }
}

@media (max-width: 390px) {
  .runtime-readout > span {
    display: none;
  }

  #runtime-status {
    display: block;
    max-width: 7.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  #source-button {
    padding-inline: 0.45rem;
  }

  .network-panel-header {
    display: grid;
  }

  #network-status {
    max-width: none;
    text-align: left;
  }

  #network-canvas {
    height: 19rem;
  }

  .source-footer {
    display: grid;
    gap: 0.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}