:root {
  color-scheme: dark;
  background: #000;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 100%;
  height: 100%;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background: #000;
}

body {
  font-family: Arial, Helvetica, sans-serif;
}

.viewer {
  display: grid;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  place-items: center;
  background: #000;
}

.player-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: #000;
}

.player-shell iframe {
  position: fixed;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

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