/* bg-canvas from DESIGN.md (theme::Tokens::bg_canvas), so the page never flashes white. */
html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #0b0b0a;
}

#studio_canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* After a panic the page shows only its message (ADR-016 Decision 23). */
#studio_canvas[hidden] {
  display: none;
}

/* Shown only when Studio cannot start; text-primary from DESIGN.md. */
#studio_error {
  position: relative;
  margin: 24px;
  color: #e4e4e7;
  font-family: system-ui, sans-serif;
  /* A second line carries the browser's own error (ADR-010). */
  white-space: pre-line;
}

#studio_error:empty {
  display: none;
}