* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #1a1a2e;
  color: #eee;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

#game-container {
  text-align: center;
}

h1 {
  font-size: 2rem;
  margin-bottom: 10px;
  color: #00ff88;
  text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

#score-board {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

#score-board strong {
  color: #00ff88;
}

#game-canvas {
  border: 2px solid #00ff88;
  border-radius: 4px;
  background: #0f0f23;
  display: block;
  margin: 0 auto;
  max-width: 100%;
}

#message {
  margin-top: 15px;
  font-size: 1.2rem;
  color: #ffcc00;
  min-height: 1.5em;
}

#controls p {
  margin-top: 10px;
  color: #888;
  font-size: 0.9rem;
}

#mobile-controls {
  display: none;
  margin-top: 15px;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.ctrl-row {
  display: flex;
  gap: 5px;
}

.ctrl-btn {
  width: 55px;
  height: 55px;
  font-size: 1.4rem;
  background: #16213e;
  color: #00ff88;
  border: 1px solid #00ff88;
  border-radius: 8px;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

.ctrl-btn:active {
  background: #00ff88;
  color: #1a1a2e;
}

@media (pointer: coarse) {
  #mobile-controls {
    display: flex;
  }
}

@media (max-width: 440px) {
  #game-canvas {
    width: 95vw;
    height: 95vw;
  }
}