body.pm-lab {
  --bg: #0f0a07;
  --bg-panel: #191009;
  --bg-raised: #21160d;
  --border: #3d2a17;
  --border-soft: #2a1c10;
  --text: #ffe8d0;
  --text-dim: #b9977a;
  --text-faint: #7d6551;
  --accent: #ff8c1a;
  --accent-soft: #ffc078;
  --accent-glow: rgba(255, 140, 26, 0.38);
  --danger: #ff6b4a;
  --lab-warn: #ffd166;
  
  --lab-left: 330px;
  --lab-right: 370px;
}

body.pm-lab {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 18% -10%, rgba(255, 140, 26, 0.10), transparent 60%),
    radial-gradient(900px 600px at 100% 110%, rgba(255, 90, 20, 0.07), transparent 60%),
    var(--bg);
}

body.pm-lab .pm-pick-seg button.on {
  background: rgba(255, 140, 26, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 140, 26, 0.4);
}

.lab-brand-sub {
  margin-left: 9px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-faint);
  white-space: nowrap;
}
@media (max-width: 1250px) { .lab-brand-sub { display: none; } }

.pm-portal-map {
  --portal-line: rgba(90, 220, 150, 0.55);
  --portal-line-hi: rgba(150, 240, 190, 0.9);
  --portal-fill: linear-gradient(135deg, rgba(40, 200, 130, 0.22), rgba(20, 150, 100, 0.10));
  --portal-text: #bdf3d8;
  --portal-shadow: rgba(30, 200, 130, 0.20);
  --portal-shadow-hi: rgba(40, 220, 150, 0.38);
}
#lab-open-map,
.pm-lab .pm-portal-back {
  flex: none;
  height: 30px;
  box-sizing: border-box;
  padding: 0 12px 0 10px;
  gap: 7px;
  font-size: 12px;
}
#lab-open-map .pm-ico,
.pm-lab .pm-portal-back .pm-ico { width: 15px; height: 15px; }

#lab {
  position: absolute;
  top: var(--topbar-h);
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns:
    minmax(0, var(--lab-left)) 10px minmax(0, 1fr) 10px minmax(0, var(--lab-right));
  padding: 0 12px 12px;
  box-sizing: border-box;
}
.lab-col {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 8px 18px 2px;
}

.lab-col .settings-group { padding-top: 14px; }
.lab-col .settings-group:first-child { border-top: none; }
.lab-col .settings-group > * { margin-top: 12px; }
.lab-col .row { gap: 7px; }

.lab-split {
  position: relative;
  cursor: col-resize;
  touch-action: none;
}

.lab-split::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: 8px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  border-radius: 2px;
  background: var(--border-soft);
  transition: background 0.15s ease, box-shadow 0.15s ease;
}
.lab-split:hover::before,
.lab-split:focus-visible::before,
.lab-split.dragging::before {
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}
.lab-split:focus-visible { outline: none; }

body.lab-dragging { cursor: col-resize; user-select: none; }
body.lab-dragging * { cursor: col-resize !important; }

#lab-stage {
  position: relative;
  min-width: 0;
  margin-top: 12px;
  border-radius: 14px;
  border: 1px solid var(--border-soft);
  background:
    radial-gradient(700px 500px at 50% 0%, rgba(255, 140, 26, 0.07), transparent 65%),
    var(--bg-panel);
  overflow: hidden;
}
#lab-canvas { display: block; width: 100%; height: 100%; }

.lab-stage-badge {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 3px 9px;
  border-radius: 7px;
  background: rgba(0, 0, 0, 0.45);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  color: var(--text-dim);
  pointer-events: none;
}

.lab-hint {
  margin: 8px 0 0;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--text-dim);
}

.lab-note {
  margin: 9px 0 0;
  padding: 7px 9px;
  border-left: 2px solid var(--accent);
  border-radius: 0 7px 7px 0;
  background: rgba(255, 140, 26, 0.07);
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--accent-soft);
}
.lab-note[hidden] { display: none; }

.lab-num {
  width: 68px;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--accent-soft);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  text-align: right;
}
.lab-num:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
  color: var(--text);
}

.lab-num::-webkit-outer-spin-button,
.lab-num::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.lab-num { -moz-appearance: textfield; }

.lab-part .row-label {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lab-part .lab-part-name { flex: 1; min-width: 0; color: var(--text); }
.lab-part.off .lab-part-name { color: var(--text-faint); }
.lab-part.off input[type="range"],
.lab-part.off .lab-num { opacity: 0.4; }

.lab-toggle {
  flex: none;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  padding: 0;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-faint);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.lab-toggle:hover { color: var(--text); border-color: var(--accent-soft); }
.lab-toggle.on {
  background: rgba(255, 140, 26, 0.16);
  border-color: rgba(255, 140, 26, 0.5);
  color: var(--accent-soft);
}
.lab-toggle svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 2; }

.row-label { align-items: center; gap: 8px; }
.row-label > span:first-child { min-width: 0; }

.lab-lenbar {
  display: flex;
  gap: 3px;
  height: 6px;
  margin-top: 2px;
}
.lab-lenbar span {
  border-radius: 3px;
  min-width: 4px;
}
.lab-lenbar span:first-child { background: #ff9a3c; }
.lab-lenbar span:last-child { background: #ff6b4a; }

.lab-presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.lab-preset {
  padding: 6px 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-dim);
  font: inherit;
  font-size: 11.5px;
  cursor: pointer;
  transition: background 0.14s ease, color 0.14s ease, border-color 0.14s ease, transform 0.14s ease;
}
.lab-preset:hover { color: var(--text); border-color: var(--accent-soft); transform: translateY(-1px); }
.lab-preset.on {
  background: rgba(255, 140, 26, 0.18);
  border-color: rgba(255, 140, 26, 0.55);
  color: var(--accent-soft);
}

.lab-save { display: flex; gap: 6px; }
.lab-save input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 5px 9px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  font: inherit;
  font-size: 12px;
}
.lab-save input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}
.lab-save .tab-btn { flex: none; margin: 0; }
.lab-builds { display: flex; flex-direction: column; gap: 5px; }
.lab-builds:empty { display: none; }
.lab-build { display: flex; align-items: stretch; gap: 4px; }
.lab-build-load {
  flex: 1;
  min-width: 0;
  padding: 6px 9px;
  text-align: left;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  font: inherit;
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease;
}
.lab-build-load:hover { border-color: var(--accent-soft); background: rgba(255, 140, 26, 0.1); }
.lab-build-del {
  flex: none;
  width: 28px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-faint);
  font: inherit;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.14s ease, border-color 0.14s ease;
}
.lab-build-del:hover { color: var(--danger); border-color: var(--danger); }

.lab-stats {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 5px 10px;
  margin: 0;
  font-size: 12px;
}
.lab-stats dt { color: var(--text-dim); }
.lab-stats dd {
  margin: 0;
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--text);
}
.lab-stats dd.warn { color: var(--lab-warn); }

.lab-formula {
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--bg-raised);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--text-dim);
}
.lab-formula b { color: var(--accent-soft); font-weight: 700; }

.lab-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.lab-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 4px 8px;
  border-radius: 7px;
  border: 1px solid var(--border-soft);
  background: var(--bg-raised);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  color: var(--text);
}
.lab-chip b { color: var(--accent-soft); font-weight: 700; }

.lab-canvas-wrap {
  position: relative;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  background: #100b07;
  overflow: hidden;
}
#lab-phase { display: block; width: 100%; aspect-ratio: 2 / 1; }

#lab-map {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  background: #000;
  cursor: crosshair;
  touch-action: none;
}
#lab-map-wrap { position: relative; }
#lab-map-mode { margin-top: 0; }
#lab-map-note {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 3px 7px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.6);
  font-size: 10.5px;
  color: var(--text-dim);
  pointer-events: none;
}

#lab-map-dot {
  position: absolute;
  width: 11px;
  height: 11px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1.5px rgba(0, 0, 0, 0.85), 0 0 8px rgba(255, 255, 255, 0.5);
  pointer-events: none;
}

.lab-transport { display: flex; gap: 7px; }
.lab-transport .tab-btn { flex: 1; justify-content: center; margin: 0; }
.tab-btn.lab-wide {
  width: 100%;
  justify-content: center;
  margin: 0;
  border-color: rgba(90, 220, 150, 0.45);
  color: #bdf3d8;
}
.tab-btn.lab-wide:hover { border-color: rgba(150, 240, 190, 0.8); }

#lab-empty,
#lab-singular {
  position: absolute;
  left: 50%;
  top: 22px;
  transform: translateX(-50%);
  width: min(520px, calc(100% - 44px));
  box-sizing: border-box;
  display: grid;
  gap: 7px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 140, 26, 0.35);
  background: rgba(28, 18, 10, 0.94);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.55);
  text-align: center;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-dim);
  backdrop-filter: blur(3px);
}
#lab-empty[hidden],
#lab-singular[hidden] { display: none; }
#lab-singular b { font-size: 13.5px; color: var(--lab-warn); }

@media (max-width: 1240px) {
  #lab {
    grid-template-columns: 1fr;
    grid-template-rows: max(320px, 42vh) auto auto;
    overflow-y: auto;
  }
  #lab-stage { order: -1; }
  .lab-split { display: none; }
  
  .lab-col { overflow: visible; min-height: auto; }
  
  .lab-col > .settings-group {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
  }
  .lab-presets { max-width: 330px; }
}

.lab-chip.hot {
  border-color: var(--accent);
  background: rgba(255, 140, 26, 0.14);
  color: var(--text);
}
.lab-chip.hot b { color: var(--accent); }

.lab-build-shot {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
  cursor: grab;
  opacity: 0;
  transition: opacity 0.35s ease, border-color 0.14s ease;
}
.lab-build-shot.ready { opacity: 1; }
.lab-build-shot:active { cursor: grabbing; }
.lab-build.dragging { opacity: 0.4; }
.lab-build.drop-before { box-shadow: 0 -2px 0 -1px var(--accent); }
.lab-build.drop-after { box-shadow: 0 2px 0 -1px var(--accent); }

body.pm-lab .settings-title-static { cursor: default; list-style: none; }
body.pm-lab .settings-title-static::before,
body.pm-lab .settings-title-static::marker { content: none; display: none; }
body.pm-lab .lab-group-open { display: block; }

#lab-bar {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  border-radius: 11px;
  border: 1px solid var(--border-soft);
  background: rgba(10, 8, 6, 0.72);
  backdrop-filter: blur(7px);
}
#lab-bar .lab-transport { flex: 1; min-width: 0; }
#lab-bar .tab-btn { margin: 0; }
.lab-find { display: flex; align-items: center; flex: none; }
.lab-find .pm-coord-input {
  width: 108px;
  padding: 6px 8px;
  margin-left: 6px;
  border-color: var(--border);
  opacity: 1;
  pointer-events: auto;
  font-family: var(--font-mono);
}
.lab-find .pm-coord-unit-btn {
  width: 40px;
  padding: 6px 4px;
  margin-left: 6px;
  opacity: 1;
  pointer-events: auto;
}
.lab-speed {
  display: flex;
  align-items: center;
  gap: 7px;
  flex: none;
  width: 190px;
  color: var(--text-dim);
}
.lab-speed .pm-ico { width: 15px; height: 15px; flex: none; }
.lab-speed input[type="range"] { flex: 1; min-width: 0; }
.lab-speed .row-value { flex: none; min-width: 44px; text-align: right; }
@media (max-width: 1250px) {
  #lab-bar { flex-wrap: wrap; }
  .lab-speed { width: 100%; }
}

.lab-eq {
  padding: 10px 11px;
  border-radius: 9px;
  background:
    linear-gradient(180deg, rgba(255, 140, 26, 0.05), transparent 70%),
    var(--bg-raised);
  border: 1px solid var(--border-soft);
}
.lab-eq-row {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 4px 6px;
}
.lab-eq-row + .lab-eq-row { margin-top: 7px; }
.lab-eq-lhs {
  min-width: 11px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  padding-bottom: 2px;
}
.lab-eq-op {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  padding-bottom: 2px;
}
.lab-eq-term {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 3px 7px 2px;
  border-radius: 7px;
  border: 1px solid transparent;
  transition: border-color 0.14s ease, background 0.14s ease;
}
.lab-eq-head {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  white-space: nowrap;
}
.lab-eq-head b { color: var(--accent-soft); font-weight: 700; }
.lab-eq-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  font-weight: 650;
  color: var(--text);
}

.lab-eq-term.hot {
  border-color: var(--accent);
  background: rgba(255, 140, 26, 0.13);
}
.lab-eq-term.hot .lab-eq-head b, .lab-eq-term.hot .lab-eq-val { color: var(--accent); }

.lab-stats dt[title] {
  text-decoration: underline dotted rgba(255, 180, 110, 0.4);
  text-underline-offset: 3px;
  cursor: help;
}

.lab-ratio { margin-top: 9px; }
.lab-ratio-label { display: block; font-size: 11.5px; color: var(--text-dim); }

.lab-massbar {
  display: flex;
  gap: 3px;
  height: 6px;
  margin-top: 5px;
}
.lab-massbar span {
  border-radius: 3px;
  min-width: 0;
  transition: flex-grow 0.14s ease;
}
.lab-massbar span:nth-child(1) { background: #ff9a3c; }
.lab-massbar span:nth-child(2) { background: #ffc46b; }
.lab-massbar span:nth-child(3) { background: #ff6b4a; }
.lab-massbar span:nth-child(4) { background: #ff4d6d; }

.lab-massbar span.off { flex: none; width: 3px; opacity: 0.28; }

.row-label { position: relative; }
.lab-undo-one {
  display: none;
  width: 18px;
  height: 18px;
  margin-left: 6px;
  padding: 0;
  border: 0;
  border-radius: 5px;
  background: none;
  color: var(--text-faint);
  cursor: pointer;
  vertical-align: middle;
}
.lab-undo-one svg { width: 13px; height: 13px; display: block; margin: auto; }
.lab-undo-one:hover { color: var(--accent); }
.row.moved:hover .lab-undo-one,
.row.moved:focus-within .lab-undo-one { display: inline-block; }