body {
  background: #0d1117;
  font-family: 'Segoe UI', sans-serif;
  color: #e6edf3;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.signup-container {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid #0ff;
  border-radius: 15px;
  padding: 40px 30px;
  box-shadow: 0 0 18px #0ff4;
  backdrop-filter: blur(10px);
  width: 300px;
  text-align: center;
}

.signup-container input {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border: none;
  border-radius: 8px;
  background: #161b22;
  color: #e6edf3;
}

.signup-container input::placeholder {
  color: #8b949e;
}

.signup-container button {
  width: 100%;
  padding: 12px;
  background-color: #0ff;
  border: none;
  border-radius: 8px;
  color: #000;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
  margin-top: 10px;
}

.signup-container button:hover {
  background-color: #00e6e6;
}

.google-btn {
  background-color: #fff;
  color: #000;
}

.google-btn:hover {
  background-color: #eee;
}

.separator {
  margin: 12px 0;
  color: #ccc;
  font-size: 0.9rem;
}

#message {
  margin-top: 10px;
  font-size: 0.9rem;
}