body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to bottom right, #e8f0ff, #ffffff);
  color: #333;
}

#game-container {
  max-width: 1000px;
  margin: auto;
  padding: 1rem;
  text-align: center;
}

header h1 {
  font-size: 2.2rem;
  color: #004085;
  margin-bottom: 0.3rem;
}

#target-nut {
  font-size: 1.5rem;
  color: #0066cc;
  margin: 0.5rem 0;
}

.score-time {
  font-weight: bold;
  font-size: 1.2rem;
}

#map {
  height: 600px;
  border: 3px solid #ccc;
  border-radius: 10px;
  margin-top: 1rem;
}

footer {
  margin-top: 1.5rem;
}

button {
  background-color: #007bff;
  color: white;
  font-size: 1rem;
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #0056b3;
}

#ranking ol {
  text-align: left;
  max-width: 400px;
  margin: 1rem auto;
  padding-left: 1.5rem;
}

.medal {
  width: 80px;
  height: 80px;
  margin: 1rem auto;
  background-size: cover;
  animation: pop 1s ease-out forwards;
}

.hidden {
  display: none;
}

@keyframes pop {
  0% { transform: scale(0.1); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}