/* Reset / base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  background-color: #000;
  color: #f3f4f6;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
}

/* Utility: hidden elements */
.hidden {
  display: none;
}

/* Player fills the whole viewport */
#player-wrapper {
  position: fixed;
  inset: 0;
}

#player-wrapper,
#player {
  width: 100%;
  height: 100%;
}

/* YouTube API replaces #player with an iframe — make sure it fills too */
#player iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Empty / error state */
#message {
  min-height: 100vh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 1rem;
  gap: 1rem;
}

/* Shown via JS by adding .visible */
#message.visible {
  display: flex;
}

#message svg {
  width: 4rem;
  height: 4rem;
  color: #4b5563;
}

#message-text {
  color: #9ca3af;
  max-width: 28rem;
  line-height: 1.5;
}