body {
  font-family: "Segoe UI", sans-serif;
  background: linear-gradient(135deg, #0078d7, #004578);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-container, .content-container {
  background: rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
  width: 90%;
  max-width: 400px;
  text-align: center;
  backdrop-filter: blur(6px);
}

h2 {
  margin-bottom: 1.5rem;
  font-weight: 400;
}

input {
  display: block;
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 1rem;
  border: none;
  border-radius: 0.5rem;
}

button, .btn {
  background-color: #fff;
  color: #004578;
  border: none;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
}

button:hover, .btn:hover {
  background-color: #e6f0ff;
}

#error {
  color: #ff8080;
  height: 1.2rem;
}

.hidden {
  display: none;
}