:root {
  color-scheme: light;
  --bg: #f4f6f2;
  --panel: #ffffff;
  --text: #18201a;
  --muted: #637067;
  --line: #d8ddd4;
  --accent: #0f7a4a;
  --accent-soft: #dff3e7;
  --cyan: #00d2ff;
  --magenta: #ff2c96;
  --danger-soft: #ffe8df;
  --shadow: 0 18px 42px rgba(26, 32, 28, 0.12);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  min-height: 30px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  padding: 5px 8px;
}

button:hover {
  border-color: #9fb1a5;
}

button:disabled,
input:disabled {
  opacity: 0.45;
  cursor: default;
}

button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

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

.approval-button {
  min-height: 38px;
  background: #fff;
  border-color: var(--accent);
  color: var(--accent);
  font-size: 13px;
  font-weight: 760;
}

.approval-button.approved {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.app-shell {
  display: grid;
  grid-template-columns: 340px 1fr;
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  overflow-y: auto;
}

.stage-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.plane-dashboard {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 8px;
}

.plane-dashboard-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  margin-bottom: 6px;
}

.plane-strip {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.plane-tile {
  display: grid;
  gap: 4px;
  min-width: 34px;
  padding: 5px 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--muted);
}

.plane-tile.current {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(15, 122, 74, 0.14);
}

.plane-tile.complete {
  background: rgba(15, 122, 74, 0.06);
}

.plane-num {
  font-size: 10px;
  font-weight: 760;
  line-height: 1;
  text-align: center;
}

.plane-lights {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.plane-light {
  width: 9px;
  height: 9px;
  border: 1px solid #b9c2ba;
  border-radius: 999px;
  background: #eef1ed;
  padding: 0;
  min-height: 0;
}

.plane-light.done {
  background: var(--accent);
  border-color: var(--accent);
}

.stage-tabs button {
  border-color: var(--line);
  background: #fff;
  font-weight: 700;
}

.stage-tabs button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 18px;
  line-height: 1.15;
  font-weight: 760;
}

h2 {
  font-size: 13px;
  line-height: 1;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0;
}

h3 {
  font-size: 13px;
  line-height: 1.1;
  color: var(--text);
  font-weight: 740;
}

.sample-name {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
}

.helper {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.25;
}

.panel,
.metrics {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 1px 0 rgba(26, 32, 28, 0.03);
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stage-panel {
  position: relative;
}

.stage-panel:not(.active-stage) {
  background: #f8faf7;
}

.stage-panel.locked {
  opacity: 0.68;
}

.stage-panel.active-stage {
  outline: 2px solid rgba(15, 122, 74, 0.22);
}

.stage-head {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  justify-content: space-between;
}

.stage-subtitle {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.25;
}

.stage-badge {
  border: 0.5px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 760;
  line-height: 1;
  padding: 5px 8px;
  white-space: nowrap;
}

.stage-badge[data-state="approved"],
.stage-badge[data-state="editing"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.stage-badge[data-state="ready"] {
  background: rgba(15, 122, 74, 0.09);
  border-color: var(--accent);
  color: var(--accent);
}

.stage-badge[data-state="locked"] {
  background: rgba(96, 105, 96, 0.08);
}

.subpanel {
  display: grid;
  gap: 7px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
}

details.subpanel {
  display: block;
}

details.subpanel[open],
details.panel[open] {
  display: grid;
  gap: 8px;
}

summary {
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 740;
  line-height: 1.1;
}

details.subpanel > *:not(summary) {
  margin-top: 7px;
}

details.panel {
  display: block;
}

.segmented,
.tool-grid,
.button-row {
  display: grid;
  gap: 6px;
}

.segmented {
  grid-template-columns: repeat(4, 1fr);
}

.view-modes button {
  min-width: 0;
  padding-inline: 6px;
}

.debug-modes {
  grid-template-columns: repeat(4, 1fr);
}

.tool-grid {
  grid-template-columns: repeat(2, 1fr);
}

.button-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.control {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 11px;
}

.legend {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  color: var(--muted);
  font-size: 11px;
}

.legend span {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
}

.swatch {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 3px;
  border: 1px solid rgba(0, 0, 0, 0.22);
}

.swatch.threshold {
  background: #ffb018;
}

.swatch.add {
  background: var(--cyan);
}

.swatch.erase {
  background: var(--magenta);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.metrics {
  display: grid;
  gap: 7px;
}

.metrics > div:not(.button-row) {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.metrics > div:not(.button-row):last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.metrics span {
  color: var(--muted);
  font-size: 11px;
}

.metrics strong {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.workspace {
  min-width: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 14px;
  padding: 20px;
}

#imageCanvas {
  width: min(100%, calc(100vh - 82px));
  height: auto;
  aspect-ratio: 1;
  justify-self: center;
  align-self: center;
  background: #151815;
  border: 1px solid #cad1c7;
  border-radius: 8px;
  box-shadow: var(--shadow);
  touch-action: none;
}

.statusbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  min-height: 34px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .workspace {
    padding-top: 0;
  }

  #imageCanvas {
    width: 100%;
  }
}