* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  touch-action: manipulation;
}
body {
  margin: 0;
  padding: 10px;
  background: #1a1a2e;
  color: white;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;
}
.container {
  text-align: center;
  width: 100%;
  max-width: 500px;
  padding-bottom: 20px;
}
h1 {
  font-size: clamp(24px, 8vw, 36px);
  margin-bottom: 10px;
  color: #83d46c;
}
.score-display {
  display: flex;
  justify-content: space-between;
  font-size: clamp(18px, 6vw, 24px);
  margin-bottom: 10px;
  font-weight: bold;
  width: 100%;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}
canvas {
  border: 2px solid #83d46c;
  background: #0f1123;
  width: 100%;
  max-width: 400px;
  height: auto;
  display: block;
  margin: 0 auto;
}
#startScreen,
#gameOver {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.95);
  padding: 30px;
  border-radius: 10px;
  border: 2px solid #83d46c;
  width: 80%;
  max-width: 300px;
  text-align: center;
}
#gameOver {
  border: 2px solid #ff4444;
}
#startBtn,
#restartBtn {
  background: #83d46c;
  border: none;
  padding: 15px 25px;
  font-size: clamp(16px, 5vw, 20px);
  border-radius: 10px;
  cursor: pointer;
  color: black;
  font-weight: bold;
  margin-top: 15px;
  width: 100%;
}
#resetScoreBtn {
  background: #ff6b6b;
  border: none;
  padding: 8px 16px;
  font-size: clamp(12px, 4vw, 14px);
  border-radius: 6px;
  cursor: pointer;
  color: black;
  font-weight: bold;
  margin-top: 10px;
  width: 80%;
}
#startBtn:hover,
#restartBtn:hover {
  background: #9ae285;
}
#resetScoreBtn:hover {
  background: #ff8e8e;
}
.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  margin-top: 20px;
  margin-bottom: 30px;
}

.control-row {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.control-btn {
  background: #83d46c;
  border: none;
  padding: 20px;
  border-radius: 50%;
  cursor: pointer;
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: black; /* For SVG fill */
}

.control-btn svg {
  width: 24px;
  height: 24px;
}

.control-btn:active {
  background: #9ae285;
  transform: scale(0.95);
}
.instructions {
  font-size: clamp(12px, 4vw, 14px);
  margin-top: 10px;
  margin-bottom: 20px;
  opacity: 0.8;
}
.hidden {
  display: none;
}