* { box-sizing: border-box; }

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

#stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: #000;
}

#player {
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
}

#watermark {
  position: absolute;
  pointer-events: none;
  color: rgba(255, 255, 255, 0.55);
  font: 600 13px/1 -apple-system, "Segoe UI", system-ui, sans-serif;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  padding: 4px 8px;
  transition: top 0.6s ease, left 0.6s ease;
  white-space: nowrap;
}

.state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9aa2b1;
  font: 500 14px -apple-system, "Segoe UI", system-ui, sans-serif;
  text-align: center;
  padding: 24px;
}
.state[hidden] { display: none; }