body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #111;
  color: white;
}
.center-screen {
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
}
.enter-button {
  padding: 20px 40px;
  font-size: 24px;
  background: #0ff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.auth-container {
  margin: 100px auto;
  width: 300px;
  text-align: center;
}
.auth-container input {
  display: block;
  width: 100%;
  margin: 10px 0;
  padding: 10px;
}
.nav-tabs {
  display: flex;
  justify-content: center;
  background: #222;
}
.nav-tabs button {
  flex: 1;
  padding: 15px;
  border: none;
  background: #333;
  color: white;
  cursor: pointer;
}
.nav-tabs button:hover {
  background: #555;
}
.content-area {
  padding: 20px;
}