@import url("https://fonts.googleapis.com/css2?family=Lobster&display=swap");
@import url("https://fonts.googleapis.com/css2?family=ZCOOL+QingKe+HuangYou&display=swap");

* {
  /* 常规初始化 */
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* 解决手机浏览器点击有选框的问题 */
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

body {
  /* 常规居中显示 */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;

  height: 100vh;
  /* 渐变背景色 */
  background: radial-gradient(at top, #12313b, #000822);
}

#overlay-bg {
  /* 星星背景大小，位置，占整个屏幕 */
  width: 100vw;
  height: 100vh;

  position: fixed;
  top: 0;
  left: 0;
}

#music-list-box {
  /* 音乐列表整体的大小，位置等 */
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;

  color: #ffd18f;
  text-align: center;

  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
}

#music-list-box h2 {
  font-size: 4vmin;
  margin-bottom: 32px;
}

#music-list-box ul {
  /* 设置列表宽度，清除默认样式 */
  max-width: 400px;
  width: 70vmin;
  list-style-type: none;
}
#music-list-box ul li {
  /* 每个列表项都隔开一点 */
  margin: 2vmin 0;
}

/* 列表中每个选择按钮的大小，颜色，动画等 */
#music-list-box ul .btn,
#music-list-box ul .upload-btn {
  display: block;

  width: 100%;
  border: 1px solid rgba(255, 209, 143, 0.2);
  border-radius: 20px;
  background-color: rgba(30, 30, 30, 0.4);
  backdrop-filter: saturate(200%) blur(4px);

  color: rgba(255, 209, 143, 0.6);
  padding: 16px;
  font-size: 16px;

  outline: none;
  pointer-events: auto;
  cursor: pointer;

  transition: all 0.3s;
}
#music-list-box ul .btn:hover,
#music-list-box ul .upload-btn:hover {
  border: 1px solid rgba(255, 209, 143, 0.6);
  color: rgba(255, 209, 143, 0.9);
  background-color: rgba(30, 30, 30, 0.2);
}

/* 加载中文字大小，颜色 */
.text-loading {
  font-size: 4vmin;
  color: rgba(255, 209, 143, 0.6);
}

/* 祝福语文字的字体，大小，颜色，动画等 */
#sentence-box {
  max-width: 90vmin;

  font-family: Lobster, "ZCOOL QingKe HuangYou", sans-serif;
  font-weight: 400;
  font-size: 10vmin;
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  user-select: none;

  position: fixed;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);

  opacity: 0;
  animation: animate 1s linear forwards;
  animation-delay: 1s;
}
@keyframes animate {
  100% {
    opacity: 1;
  }
}