html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: "Segoe UI", system-ui, sans-serif;
  overscroll-behavior: none;
  touch-action: none;
}

#camerafeed {
  display: block;
  width: 100vw;
  height: 100vh;
}

#overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

#status {
  position: absolute;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  max-width: calc(100vw - 32px);
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.68);
  color: #fff;
  font-size: 14px;
  line-height: 1.25;
  text-align: center;
  white-space: nowrap;
}

#start-button,
#confirm-button {
  pointer-events: auto;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  background: #fff;
  color: #000;
  font-size: 16px;
  font-weight: 700;
}

#start-button {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

#start-button.hidden,
#intro-panel.hidden,
#countdown.hidden {
  display: none;
}

#intro-panel {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(92vw, 420px);
  padding: 22px 20px 20px;
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  text-align: center;
  pointer-events: auto;
  backdrop-filter: blur(8px);
}

#intro-title {
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

#intro-body {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.45;
  opacity: 0.95;
}

#confirm-button {
  width: 100%;
}

#countdown {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 96px;
  font-weight: 800;
  text-shadow: 0 8px 24px #000;
}