* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: sans-serif;
  background: #1a1a2e;
  color: #eee;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px;
}

h1 { margin: 8px 0 16px; font-size: 24px; }

#hud {
  font-size: 18px;
  margin-bottom: 12px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

#game-zone {
  position: relative;
  width: 90vw;
  max-width: 600px;
  height: 60vh;
  min-height: 300px;
  background: #16213e;
  border: 3px solid #0f3460;
  overflow: hidden;
  border-radius: 12px;
  transition: background 0.3s;
}

#game-zone.combo-mode {
  background: #b8860b;
}

#ghost {
  position: absolute;
  font-size: 44px;
  cursor: pointer;
  user-select: none;
  display: none;
  transition: left 0.15s, top 0.15s;
}

#combo-label {
  position: absolute;
  top: 8px;
  right: 12px;
  font-weight: bold;
  color: gold;
  font-size: 20px;
  display: none;
}

#combo-label.visible { display: block; }

#start-btn {
  margin-top: 16px;
  padding: 12px 24px;
  font-size: 18px;
  background: #e94560;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

#start-btn:hover { background: #c73650; }