body {
    font-family: Arial, sans-serif;
    background-color: #1e1e2f;
    color: #f0f0f0;
    padding: 20px;
}

h1, h2, h3 {
    color: #ffcc00;
}

button {
    background-color: #4444aa;
    color: white;
    border: none;
    padding: 10px 15px;
    margin: 5px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #6666ff;
}

pre {
    background-color: #2a2a40;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    max-height: 400px;
}

.login-box, .control-box {
  background: #2a2a40;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.5);
  width: 320px;
  text-align: center;
}

input[type="text"], input[type="password"] {
  width: 90%;
  padding: 10px;
  margin: 0.5rem 0;
  border: none;
  border-radius: 6px;
  outline: none;
}

input[type="submit"], .btn {
  display: inline-block;
  width: 100%;
  padding: 10px;
  margin-top: 1rem;
  background: #61dafb;
  border: none;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  text-decoration: none;
  color: #000;
  transition: background 0.3s ease;
}

input[type="submit"]:hover, .btn:hover {
  background: #4bbcd6;
}

.error {
  color: #ff6b6b;
  margin-top: 1rem;
}