* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: linear-gradient(135deg, #ffeb3b, #ff5722);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: white;
  padding: 25px;
  border-radius: 12px;
  text-align: center;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

h1 {
  margin-bottom: 10px;
}

input {
  width: 100%;
  padding: 12px;
  margin-top: 15px;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.buttons {
  margin-top: 15px;
}

button {
  padding: 10px 15px;
  margin: 5px;
  border: none;
  border-radius: 8px;
  background: #667eea;
  color: white;
  cursor: pointer;
  font-size: 14px;
}

button:hover {
  opacity: 0.9;
}

.restart {
  background: #e74c3c;
}

#message {
  margin-top: 15px;
  font-weight: bold;
}

#attempts {
  margin-top: 5px;
  color: #555;
}

/* 📱 Mobile optimization */
@media (max-width: 480px) {
  .container {
    padding: 20px;
  }

  h1 {
    font-size: 22px;
  }

  button {
    width: 100%;
  }
}