/* 爱心跳动 - 移动端适配 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background: rgb(0, 0, 0);
  overflow: hidden;
  margin: 0;
  padding: 0;
  /* 禁止移动端缩放和滚动 */
  touch-action: none;
  -webkit-overflow-scrolling: touch;
  position: fixed;
  top: 0;
  left: 0;
}

/* Canvas 全屏适配 */
canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  position: fixed;
  top: 0;
  left: 0;
}

/* 下载按钮样式 */
#downloadBtn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #ff6b9d, #c44569);
  color: white;
  border: none;
  border-radius: 25px;
  font-size: 14px;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
  transition: all 0.3s ease;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#downloadBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 157, 0.6);
}

#downloadBtn:active {
  transform: translateY(0);
}

/* 移动端下载按钮适配 */
@media screen and (max-width: 768px) {
  #downloadBtn {
    bottom: 15px;
    right: 15px;
    padding: 10px 20px;
    font-size: 12px;
  }
}

/* 小屏幕手机适配 */
@media screen and (max-width: 480px) {
  #downloadBtn {
    bottom: 10px;
    right: 10px;
    padding: 8px 16px;
    font-size: 11px;
  }
}

/* 横屏适配 */
@media screen and (orientation: landscape) and (max-height: 500px) {
  #downloadBtn {
    bottom: 10px;
    right: 10px;
    padding: 8px 16px;
    font-size: 11px;
  }
}

/* 隐藏滚动条 */
::-webkit-scrollbar {
  display: none;
}

/* 防止文字选中 */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}