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

body {
  background: #1a1a2e;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;
  font-family: 'Segoe UI', 'Hiragino Sans', 'Meiryo', sans-serif;
}

#game-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

#game-canvas {
  display: block;
  cursor: pointer;
  image-rendering: auto;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* 名前入力ダイアログ */
#name-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

#name-dialog {
  background: #fff;
  border-radius: 16px;
  padding: 32px 40px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

#name-dialog h3 {
  font-size: 24px;
  color: #333;
  margin-bottom: 8px;
}

#name-dialog p {
  font-size: 14px;
  color: #888;
  margin-bottom: 16px;
}

#name-input {
  width: 220px;
  height: 44px;
  font-size: 20px;
  text-align: center;
  border: 3px solid #FF6F00;
  border-radius: 8px;
  outline: none;
  background: #fff;
  color: #333;
  font-family: inherit;
  padding: 0 8px;
  display: block;
  margin: 0 auto 16px;
}

#name-input:focus {
  border-color: #FF8F00;
  box-shadow: 0 0 8px rgba(255, 111, 0, 0.3);
}

#name-submit {
  background: #FF6F00;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 40px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  font-family: inherit;
}

#name-submit:hover {
  background: #E65100;
}