body.style {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #1d3557, #457b9d);
  color: #f1faee;
  text-align: center;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  text-shadow: 2px 2px 5px rgba(0,0,0,0.3);
}

#count {
  font-weight: bold;
  color: #ffb703;
}

#numberInput {
  padding: 12px 15px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  margin: 10px;
  width: 200px;
  outline: none;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
  transition: box-shadow 0.2s ease;
}

#numberInput:focus {
  box-shadow: 0 6px 10px rgba(0,0,0,0.3);
}

#submitBtn {
  padding: 12px 20px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: #09c85f;
  color: white;
  font-weight: bold;
  transition: background 0.3s ease, transform 0.2s ease;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}

#submitBtn:hover {
  background: #d62828;
  transform: translateY(-2px);
}

#message {
  margin-top: 15px;
  font-size: 1.1rem;
  min-height: 24px;
  color: #f1faee;
}