:root {
  --bg: #ffffff;
  --text: #111111;
  --primary: #ff4500;
  --accent: #2196f3;
  --score-bg: #6a0dad;
  --hole-color: #eeeeee;
  --shadow: rgba(0, 0, 0, 0.2);
}

body.dark {
  --bg: #121212;
  --text: #f2f2f2;
  --primary: #ff7b00;
  --accent: #00bcd4;
  --score-bg: #9b59b6;
  --hole-color: #2b2b2b;
  --shadow: rgba(255, 255, 255, 0.2);
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', sans-serif;
  transition: background 0.3s ease, color 0.3s ease;
  text-align: center;
}

h1 {
  font-size: 3.5rem;
  margin: 1rem 0;
  text-shadow: 2px 2px var(--shadow);
}

/* Mode Toggle */
.mode-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.switch {
  position: relative;
  width: 60px;
  height: 34px;
}

.switch input {
  display: none;
}

.slider {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #ccc;
  border-radius: 34px;
  transition: 0.4s;
}

.slider:before {
  content: "";
  position: absolute;
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  border-radius: 50%;
  transition: 0.4s;
}

input:checked + .slider {
  background-color: var(--accent);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

/* Controls */
.controls {
  margin: 1rem auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

select, button {
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  cursor: pointer;
  transition: transform 0.2s, background 0.3s;
}

select {
  background: var(--hole-color);
  color: var(--text);
  border: 2px solid var(--primary);
}

button:hover {
  transform: scale(1.05);
  background: var(--accent);
}

/* Score Panel */
.score-panel {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.2rem;
  margin: 1rem;
  flex-wrap: wrap;
  font-size: 1.2rem;
}

.score, .high-score, .misses, .timer {
  background: var(--score-bg);
  padding: 0.5rem 1rem;
  border-radius: 12px;
  color: #fff;
  font-weight: bold;
  box-shadow: 0 4px 8px var(--shadow);
}

/* Game Grid */
.game {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 600px;
  margin: 2rem auto;
  gap: 10px;
}

.hole {
  position: relative;
  width: 30%;
  aspect-ratio: 1 / 1;
  background: var(--hole-color);
  border-radius: 50%;
  box-shadow: inset 0 2px 8px var(--shadow);
  overflow: hidden;
}

.hole:after {
  content: '';
  position: absolute;
  bottom: 0;
  height: 30px;
  width: 100%;
  background: url('image/dirt.png') center no-repeat;
  background-size: cover;
  z-index: 2;
}

.mole {
  position: absolute;
  bottom: -100%;
  width: 100%;
  height: 100%;
  background: url('image/mole.png') center no-repeat;
  background-size: 80%;
  transition: bottom 0.3s ease;
}

.hole.up .mole {
  bottom: 0;
  animation: pop 0.3s ease;
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1.1); }
}

/* Game Over */
.game-over {
  background: var(--hole-color);
  padding: 2rem;
  border-radius: 20px;
  margin-top: 2rem;
  box-shadow: 0 4px 20px var(--shadow);
}

.hidden {
  display: none;
}

/* Countdown */
.countdown {
  font-size: 5rem;
  color: var(--primary);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

/* Leaderboard */
.leaderboard {
  margin: 2rem auto;
  max-width: 400px;
  padding: 1rem;
  background: var(--hole-color);
  border-radius: 12px;
  box-shadow: 0 4px 10px var(--shadow);
}

.leaderboard h3 {
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.leaderboard ol {
  list-style: decimal;
  padding-left: 1.2rem;
  text-align: left;
}

.leaderboard button {
  margin-top: 0.5rem;
  background: #e74c3c;
}

.audio-control {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}

#volumeSlider {
  width: 150px;
}

/* Responsive */
@media (max-width: 600px) {
  h1 {
    font-size: 2.5rem;
  }

  .game {
    gap: 6px;
  }

  .hole {
    width: 45%;
  }

  .score-panel {
    flex-direction: column;
  }

  .controls {
    flex-direction: column;
  }

  .audio-control {
    flex-direction: column;
  }
}