:root {
  color-scheme: dark;
  --bg: #000000;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

body {
  font-family: "IBM Plex Sans", sans-serif;
}

#stage {
  display: block;
  width: 100vw;
  height: 100vh;
  background: #000000;
}

.audio-overlay {
  position: fixed;
  right: 16px;
  bottom: 16px;
  max-width: min(320px, calc(100vw - 32px));
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  background: rgba(8, 10, 16, 0.88);
  backdrop-filter: blur(16px);
  color: #f3f5ff;
  text-align: left;
  cursor: pointer;
  z-index: 30;
}

.audio-overlay.hidden {
  display: none;
}

.audio-overlay-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.25;
}

.audio-overlay-hint {
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.35;
  color: rgba(225, 232, 255, 0.78);
}