body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #f9d976, #f39f86);
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  color: #333;
}

#app {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 400px;
  text-align: center;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #e74c3c;
}

button {
  padding: 0.75rem 1.5rem;
  margin: 0.5rem;
  border: none;
  border-radius: 8px;
  background-color: #3498db;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #2980b9;
}

input[type="number"] {
  padding: 0.5rem;
  width: 100%;
  margin: 1rem 0;
  border: 2px solid #ccc;
  border-radius: 8px;
  font-size: 1.2rem;
}

.home-btn {
  background-color: #2ecc71;
  margin-top: 1rem;
}

.home-btn:hover {
  background-color: #27ae60;
}

#feedback, #motivation {
  font-weight: bold;
  font-size: 1.1rem;
  margin-top: 1rem;
}

#score {
  font-size: 1rem;
  margin-top: 0.5rem;
  color: #555;
}