body {
  font-family: Arial;
  text-align: center;
  margin: 0;
  height: 100vh;

  /* 🌈 Attractive gradient background */
  background: linear-gradient(135deg, #4facfe, #00f2fe, #43e97b);
  background-size: 400% 400%;
  animation: bgMove 8s ease infinite;

  display: flex;
  justify-content: center;
  align-items: center;
}

/* background animation */
@keyframes bgMove {
  0% {background-position: 0% 50%;}
  50% {background-position: 100% 50%;}
  100% {background-position: 0% 50%;}
}

.container {
  background: rgba(255, 255, 255, 0.2);
  padding: 40px;
  border-radius: 15px;

  /* glass effect */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  width: 300px;
}

h1 {
  color: white;
  font-size: 24px;
}

input {
  padding: 10px;
  width: 90%;
  margin-top: 10px;
  border: none;
  border-radius: 5px;
}

button {
  padding: 10px;
  width: 100%;
  margin-top: 10px;
  cursor: pointer;
  background: #ffffff;
  color: #333;
  border: none;
  border-radius: 5px;
  font-weight: bold;
}

button:hover {
  background: #f1f1f1;
}

#result {
  margin-top: 15px;
  padding: 10px;
  background: rgba(255,255,255,0.8);
  border-radius: 10px;
}