:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #071019;
  color: #effaff;
  --panel: rgba(7, 16, 25, 0.86);
  --line: rgba(142, 229, 241, 0.22);
  --cyan: #20d9ee;
  --magenta: #ff3aa7;
  --yellow: #ffda43;
}

* { box-sizing: border-box; }

html,
body,
.robot-lab-shell {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body { background: #071019; }

button,
input { font: inherit; }

#robot-lab-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.lab-titlebar {
  position: fixed;
  z-index: 4;
  top: max(16px, env(safe-area-inset-top));
  left: max(18px, env(safe-area-inset-left));
  right: max(18px, env(safe-area-inset-right));
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  pointer-events: none;
}

.lab-titlebar h1 {
  margin: 2px 0 0;
  font-size: clamp(1.45rem, 3vw, 2.35rem);
  letter-spacing: -0.045em;
  text-shadow: 0 2px 18px #000;
}

.eyebrow {
  margin: 0;
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.game-link {
  pointer-events: auto;
  color: #eaffff;
  background: rgba(8, 18, 27, 0.8);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  text-decoration: none;
  backdrop-filter: blur(14px);
}

.lab-controls {
  position: fixed;
  z-index: 5;
  top: clamp(92px, 16vh, 132px);
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  width: min(350px, calc(100vw - 36px));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(18px) saturate(1.2);
  scrollbar-width: thin;
}

.lab-controls section + section {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(139, 230, 244, 0.14);
}

.lab-controls h2 {
  margin: 0 0 9px;
  font-size: 0.82rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.section-heading output {
  color: var(--yellow);
  font-size: 0.73rem;
  font-weight: 700;
}

.button-grid {
  display: grid;
  gap: 7px;
}

.motion-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.view-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.button-grid button {
  min-height: 36px;
  padding: 7px 8px;
  color: #dcecf3;
  border: 1px solid rgba(140, 222, 234, 0.17);
  border-radius: 10px;
  background: rgba(20, 39, 51, 0.76);
  cursor: pointer;
}

.button-grid button:hover,
.button-grid button:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

.button-grid button[aria-pressed="true"] {
  color: #041017;
  border-color: #78f3ff;
  background: linear-gradient(135deg, #7ff5ff, #20c8e5);
  box-shadow: 0 0 18px rgba(32, 217, 238, 0.24);
}

.hint {
  margin: 8px 0 0;
  color: #9dafb8;
  font-size: 0.72rem;
  line-height: 1.45;
}

kbd {
  padding: 1px 5px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  background: #111e27;
}

.toggle-row {
  display: flex;
  gap: 9px;
  align-items: center;
  min-height: 34px;
  color: #c9dbe2;
  font-size: 0.78rem;
}

.toggle-row input { accent-color: var(--cyan); }

.legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px 10px;
  margin-top: 7px;
  color: #9eb2ba;
  font-size: 0.67rem;
}

.legend span { display: flex; align-items: center; gap: 6px; }
.legend i { width: 9px; height: 9px; border-radius: 50%; box-shadow: 0 0 8px currentColor; }
.legend .cyan { color: var(--cyan); background: currentColor; }
.legend .yellow { color: var(--yellow); background: currentColor; }
.legend .magenta { color: var(--magenta); background: currentColor; }
.legend .white { color: white; background: currentColor; }

.diagnostic-card dl { margin: 0; }
.diagnostic-card dl div { display: grid; grid-template-columns: 92px 1fr; gap: 8px; margin: 5px 0; }
.diagnostic-card dt { color: #8da2ac; font-size: 0.68rem; }
.diagnostic-card dd { margin: 0; color: #dbeaf0; font: 0.68rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; overflow-wrap: anywhere; }

.lab-status {
  position: fixed;
  z-index: 6;
  left: max(18px, env(safe-area-inset-left));
  bottom: max(18px, env(safe-area-inset-bottom));
  max-width: min(520px, calc(100vw - 400px));
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: #b6c9d0;
  background: rgba(7, 16, 25, 0.78);
  font-size: 0.73rem;
  backdrop-filter: blur(12px);
}

.postprocessing-lab,
.runtime-performance-debugger {
  position: fixed;
  z-index: 20;
  left: 12px;
  width: min(340px, calc(100vw - 24px));
  max-height: calc(50dvh - 24px);
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: #dff8ff;
  background: rgba(5, 12, 20, 0.92);
  font-size: 0.72rem;
}

.postprocessing-lab { top: 92px; }
.runtime-performance-debugger { bottom: 12px; }
.postprocessing-lab-controls { display: grid; gap: 8px; }
.postprocessing-lab label { display: grid; gap: 3px; }
.postprocessing-lab-label { display: flex; justify-content: space-between; }
.runtime-performance-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.runtime-performance-row dd { margin: 0; }

@media (max-width: 720px) {
  .lab-titlebar { top: max(10px, env(safe-area-inset-top)); left: 12px; right: 12px; }
  .eyebrow { max-width: 220px; }
  .game-link { padding: 7px 10px; font-size: 0.72rem; }
  .lab-controls {
    top: auto;
    left: 8px;
    right: 8px;
    bottom: max(8px, env(safe-area-inset-bottom));
    width: auto;
    max-height: 42dvh;
    border-radius: 16px;
    padding: 11px;
  }
  .lab-status { display: none; }
  .motion-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .button-grid button { min-height: 40px; font-size: 0.72rem; }
  .postprocessing-lab,
  .runtime-performance-debugger { max-height: 35dvh; }
}

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