body {
  margin: 0;
  padding: 0;
  color: rgba(255, 255, 255, 0.87);
  background-color: #0f0f0f;
}

#app {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

#input {
  position: absolute;
  bottom: 50%;
  left: 50%;
  transform: translate(-50%, 50%);
  padding: 10px 16px;
  font-size: 16px;
  display: none;

  /* semi-transparent background */
  background-color: rgba(17, 17, 17, 0.6);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);

  color: #eee;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);

  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;

  outline: none;
  z-index: 1000;
}

#input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

#input:focus {
  background-color: rgba(17, 17, 17, 0.8);
  border-color: rgba(0, 150, 255, 0.6);
  box-shadow: 0 0 10px rgba(0, 150, 255, 0.7);
}