.lab-content-page {
  padding-bottom: 24px;
}
.lab-content-page .breadcrumb {
  padding: 4px 0;
  margin: 10px 0 8px;
  font-size: 0.72rem;
}
.image-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 0 14px;
}
.image-heading h1 {
  margin: 0;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}
.image-actions {
  display: flex;
  gap: 6px;
}
.image-actions button,
.image-lab button,
#image-zoom button {
  font: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
  cursor: pointer;
}
.image-actions button {
  min-height: 32px;
  padding: 5px 10px;
  font-size: 0.75rem;
  white-space: nowrap;
}
.short-label {
  display: none;
}
.image-lab {
  --image-accent: var(--blue-strong);
  --picture-size: 360px;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  grid-template-areas: "controls comparison" "controls metrics";
  gap: 10px 18px;
  align-items: start;
}
.image-controls {
  grid-area: controls;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.image-lab fieldset {
  border: 0;
  padding: 0;
  margin: 0;
  min-width: 0;
}
.control-panel {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}
.image-lab legend {
  display: block;
  padding: 0;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 6px;
}
.image-lab legend small {
  margin-left: 5px;
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--ink-soft);
}
.resolution-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.75rem;
  line-height: 1.3;
}
.resolution-caption label {
  font-weight: 700;
}
.resolution-caption output {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
#resolution {
  display: block;
  width: 100%;
  height: 22px;
  margin: 4px 0 0;
  accent-color: var(--image-accent);
  cursor: ew-resize;
}
.color-settings-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.segmented {
  display: flex;
  gap: 5px;
}
.segmented label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 6px;
  min-height: 30px;
  font-size: 0.73rem;
  cursor: pointer;
  background: var(--white);
  white-space: nowrap;
}
.segmented label:has(input:checked) {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.segmented input {
  appearance: none;
  width: 0;
  height: 0;
  margin: 0;
}
.segmented label:has(input:focus-visible) {
  outline: 3px solid var(--image-accent);
  outline-offset: 2px;
}
.bit-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
}
.channel-name {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 5px;
}
.channel-r .channel-name {
  color: #aa2f32;
}
.channel-g .channel-name {
  color: #28733f;
}
.channel-b .channel-name {
  color: #2f6597;
}
.stepper {
  display: grid;
  grid-template-columns: minmax(25px, 1fr) 28px;
  grid-template-rows: 24px 24px;
  gap: 2px;
  align-items: center;
}
.stepper output {
  grid-column: 1;
  grid-row: 1/3;
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  white-space: nowrap;
}
.stepper output small {
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--ink-soft);
}
.stepper button {
  grid-column: 2;
  width: 28px;
  height: 24px;
  padding: 0;
  font-size: 0.9rem;
  line-height: 1;
  font-weight: 700;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.stepper [data-step="1"] {
  grid-row: 1;
}
.stepper [data-step="-1"] {
  grid-row: 2;
}
.stepper button:hover:not(:disabled) {
  border-color: var(--image-accent);
  background: #eef4f8;
}
.stepper button:active:not(:disabled) {
  background: #d9e7f1;
}
.stepper button:disabled {
  color: #9ba9a9;
  background: var(--paper);
  cursor: default;
}
#gray-bits .stepper {
  max-width: 90px;
}
.channel-control {
  margin-top: 12px !important;
}
.channel-control .segmented {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
}
.channel-control .segmented label {
  padding: 5px 2px;
  font-size: 0.65rem;
}
[hidden] {
  display: none !important;
}
.image-comparison {
  grid-area: comparison;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
  justify-items: center;
}
.image-figure {
  margin: 0;
  min-width: 0;
  width: min(100%, var(--picture-size));
}
.image-figure figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 6px;
  min-height: 22px;
}
.image-figure h2 {
  font-size: 0.92rem;
  margin: 0;
  white-space: nowrap;
}
.image-figure figcaption > span {
  color: var(--ink-soft);
  font-size: 0.65rem;
  white-space: nowrap;
}
.grid-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.67rem;
  cursor: pointer;
  white-space: nowrap;
}
.grid-toggle input {
  margin: 0;
  accent-color: var(--blue-strong);
}
.image-lab .picture-button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  aspect-ratio: 1;
  border-radius: 10px;
  overflow: hidden;
  background: var(--paper-deep);
  cursor: zoom-in;
}
.picture-button:hover {
  border-color: var(--blue-strong);
}
.image-figure canvas {
  display: block;
  width: 100%;
  height: 100%;
}
#source-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
#output-canvas {
  image-rendering: pixelated;
}
.image-caption {
  font-size: 0.65rem;
  margin: 4px 0 0;
  color: var(--ink-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.image-metrics {
  grid-area: metrics;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-block: 1px solid var(--line);
  padding: 10px 0;
  gap: 8px;
  margin: 0;
}
.image-metrics dt {
  font-size: 0.66rem;
  color: var(--ink-soft);
  line-height: 1.3;
}
.image-metrics dd {
  margin: 3px 0 0;
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
  white-space: nowrap;
}
#image-error {
  grid-column: 1/-1;
  color: #aa2f32;
  font-size: 0.8rem;
  margin: 0;
}
.image-lab :is(button, input):focus-visible,
.image-actions button:focus-visible,
#image-zoom button:focus-visible {
  outline: 3px solid var(--blue-strong);
  outline-offset: 2px;
}
#image-zoom {
  width: min(900px, calc(100vw - 24px));
  max-height: calc(100dvh - 24px);
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  color: var(--ink);
}
#image-zoom::backdrop {
  background: rgb(16 47 53 / 65%);
}
.zoom-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.zoom-heading h2 {
  font-size: 1rem;
  margin: 0;
}
#close-zoom {
  min-height: 32px;
  padding: 5px 10px;
}
#zoom-canvas {
  display: block;
  width: min(100%, calc(100dvh - 100px));
  height: auto;
  margin: auto;
  image-rendering: pixelated;
}
@media (max-width: 900px) and (min-width: 821px) {
  .image-lab {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 10px 14px;
  }
  .image-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 820px) {
  .image-lab {
    grid-template-columns: 1fr;
    grid-template-areas: "controls" "comparison" "metrics";
    gap: 10px;
  }
  .image-controls {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 10px;
  }
  .color-settings-row {
    display: grid;
    grid-template-columns: minmax(90px, 0.8fr) minmax(161px, 1.2fr);
    gap: 10px;
  }
  .mode-control .segmented {
    flex-direction: column;
  }
  .image-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
@media (max-width: 600px) {
  .image-heading {
    gap: 8px;
    padding-bottom: 10px;
  }
  .image-heading h1 {
    font-size: 1.15rem;
  }
  .image-actions button {
    min-height: 30px;
    padding: 4px 6px;
    font-size: 0.68rem;
  }
  .wide-label {
    display: none;
  }
  .short-label {
    display: inline;
  }
  .image-controls {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .control-panel {
    padding: 10px;
  }
  .image-lab legend {
    font-size: 0.72rem;
    margin-bottom: 5px;
  }
  .mode-control .segmented label {
    font-size: 0.69rem;
    padding-inline: 3px;
  }
  .bit-controls {
    gap: 4px;
  }
  .stepper {
    grid-template-columns: minmax(24px, 1fr) 26px;
  }
  .stepper button {
    width: 26px;
  }
  .stepper output {
    font-size: 1rem;
  }
  .stepper output small {
    font-size: 0.57rem;
  }
  .channel-control {
    margin-top: 8px !important;
  }
  .channel-control .segmented label {
    min-height: 28px;
    font-size: 0.68rem;
  }
  .image-comparison {
    gap: 10px;
  }
  .image-figure h2 {
    font-size: 0.79rem;
  }
  .grid-toggle {
    font-size: 0.6rem;
    gap: 2px;
  }
  .grid-toggle input {
    width: 12px;
    height: 12px;
  }
  .image-figure figcaption > span {
    display: none;
  }
  .image-caption {
    font-size: 0.6rem;
  }
  .image-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 7px 0;
    gap: 6px 10px;
  }
  .image-metrics dt {
    font-size: 0.63rem;
  }
  .image-metrics dd {
    font-size: 0.9rem;
    margin-top: 1px;
  }
}