body {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

.login-container {
  background-color: white;
  padding: 2rem 2.5rem;
  border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  width: 100%;
  max-width: 380px;
  text-align: center;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.75rem;
  margin: 0.5rem 0;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

button {
  width: 100%;
  padding: 0.75rem;
  margin-top: 1rem;
  color: white;
  background-color: #2563eb;
  border: none;
  border-radius: 6px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background-color: #1d4ed8;
}

.register {
  background-color: #6b7280;
}

.message {
  margin-top: 1rem;
  display: none;
  font-size: 0.95rem;
}