body {
  background: white;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Segoe UI", Arial, sans-serif;
  margin: 0;
}

.login-container {
  background: #fff;
  padding: 2.5rem 2rem;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(44, 62, 80, 0.2);
  width: 100%;
  max-width: 350px;
}

h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: #333;
}

.input-group {
  margin-bottom: 1.2rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.4rem;
  color: #555;
  font-size: 1rem;
}

.input-group input {
  width: 100%;
  padding: 15px 0px 0px 0px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  transition: border 0.2s;
}

.input-group input:focus {
  border-color: #667eea;
  outline: none;
}

button[type="submit"] {
  width: 100%;
  padding: 0.8rem;
  color: black;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}

.error-message {
  color: #e74c3c;
  text-align: center;
  margin-top: 1rem;
  font-size: 0.95rem;
  min-height: 1.2em;
}