body {
  font-family: Arial;
  background: #0d0d0d;
  color: white;
  text-align: center;
}

#login, #app {
  margin-top: 50px;
}

#app {
  display: none;
}

input, select, button {
  margin: 8px;
  padding: 10px;
  border-radius: 8px;
  border: none;
}

button {
  background: #00ffcc;
  color: black;
  cursor: pointer;
}

.card {
  background: #1c1c1c;
  padding: 20px;
  margin: 20px auto;
  border-radius: 12px;
  width: 320px;
}