* {
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background: linear-gradient(135deg, #667eea, #764ba2);
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  color: #fff;
}

.container {
  background: rgba(0, 0, 0, 0.3);
  padding: 30px;
  border-radius: 20px;
  text-align: center;
  width: 500px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

h1 {
  margin-bottom: 15px;
  font-size: 2rem;
  color: #fff;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.color-display {
  display: flex;
  justify-content: space-around;
  margin: 20px 0;
}

.color-box {
  text-align: center;
}

.color {
  width: 100px;
  height: 100px;
  border-radius: 10px;
  border: 3px solid #fff;
  margin: 10px;
}

.label {
  font-weight: bold;
}

.sliders {
  margin: 20px 0;
}

.slider-group {
  margin: 15px 0;
}

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 10px;
  border-radius: 5px;
  background: #ddd;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #2ecc71;
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #2ecc71;
  cursor: pointer;
  border: none;
}

button {
  background: #2ecc71;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s;
  margin: 5px;
}

button:hover {
  background: #27ae60;
}

#level, #score {
  font-size: 18px;
  margin: 5px 0;
}

#message {
  margin: 10px 0;
  font-size: 16px;
  min-height: 20px;
}