.canvas-stage {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 34%, color-mix(in srgb, var(--green) 12%, transparent), transparent 42%),
    linear-gradient(150deg, color-mix(in srgb, var(--stage-plane-a) 76%, transparent), var(--stage-bg));
}

.canvas-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--ink) 5%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--ink) 5%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 76%, transparent);
  opacity: 0.42;
}

#sceneCanvas {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  min-height: 486px;
  aspect-ratio: 16 / 10;
  touch-action: none;
  user-select: none;
  cursor: grab;
}

.canvas-stage.is-orbiting #sceneCanvas,
.canvas-stage.is-rod-dragging #sceneCanvas {
  cursor: grabbing;
}

#sceneCanvas:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: -5px;
}

.view-hud-360 {
  right: 20px;
  left: 20px;
  z-index: 3;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: auto;
  max-width: none;
}

.view-readout output {
  white-space: nowrap;
}

.camera-actions {
  display: flex;
  align-items: center;
  gap: 7px;
}

.camera-actions button {
  min-width: 38px;
  height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--ink);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--ink) 5%, transparent);
  font-size: 11px;
  font-weight: 700;
  transition: transform 0.18s, border-color 0.18s, color 0.18s, background 0.18s;
}

.camera-actions button:first-child,
.camera-actions button:nth-child(2) {
  padding: 0;
  font-size: 18px;
}

.camera-actions button:hover {
  color: var(--green);
  border-color: var(--green);
  transform: translateY(-1px);
}

.camera-actions button[aria-pressed="true"] {
  color: var(--bg);
  border-color: var(--green);
  background: var(--green);
}

.version-chip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--green-soft) 52%, var(--panel));
  font-size: 10px;
}

.version-chip span {
  padding: 4px 6px;
  border-radius: 6px;
  color: #fffaf0;
  background: var(--green);
  font: 700 9px/1 ui-monospace, monospace;
  letter-spacing: 0.05em;
}

html[data-theme="dark"] .version-chip span {
  color: #032018;
}

.version-chip b {
  font-size: 11px;
}

.version-chip a {
  color: var(--green);
  font-weight: 700;
}

.version-chip a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.stage-legend {
  z-index: 3;
}

@media (max-width: 900px) {
  .canvas-stage {
    min-height: 510px;
  }

  #sceneCanvas {
    min-height: 430px;
  }
}

@media (max-width: 620px) {
  .canvas-stage {
    min-height: 456px;
  }

  #sceneCanvas {
    min-height: 374px;
    aspect-ratio: 4 / 3;
  }

  .view-hud-360 {
    top: 12px;
    right: 12px;
    left: 12px;
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
  }

  .camera-actions {
    display: grid;
    grid-template-columns: 38px 38px 1fr 1fr;
  }

  .camera-actions button {
    width: 100%;
    padding-inline: 7px;
  }

  .view-readout output {
    white-space: normal;
  }

  .stage-legend {
    right: 12px;
    bottom: 10px;
    left: 12px;
  }

  .stage-legend .drag-hint {
    width: 100%;
  }

  .version-chip {
    grid-template-columns: auto 1fr;
  }

  .version-chip a {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .camera-actions button {
    transition: none;
  }
}