body {
   font-family: 'Prompt', sans-serif;
  background: linear-gradient(to bottom right, #f1f2f6, #dfe6e9);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-box {
  background: white;
  padding: 40px 30px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}

h4 {
  text-align: center;
  font-weight: 600;
  margin-bottom: 30px;
  color: #333;
}

.form-control {
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 1rem;
}

.btn-login {
  background: linear-gradient(to right, #f39c12, #e67e22);
  color: white;
  font-weight: bold;
  padding: 12px;
  border-radius: 12px;
  border: none;
  width: 100%;
  transition: 0.3s ease;
  font-size: 1rem;
}

.btn-login:hover {
  background: linear-gradient(to right, #e67e22, #d35400);
}

.copyright {
  text-align: center;
  margin-top: 20px;
  font-size: 0.9rem;
  color: #aaa;
}

#loginBox.hidden {
  display: none;
}