html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #0a0d1e;
  overflow: hidden;
  touch-action: none;
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
}

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

#snap {
  position: fixed;
  bottom: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  z-index: 10;
  transition: background 0.15s ease;
}

#snap:hover, #snap:active {
  background: rgba(255, 255, 255, 0.18);
}

#snap svg {
  width: 20px;
  height: 20px;
}