/* ===== 加载容器：全屏 ===== */
#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #111;
  z-index: 999999;
  display: flex;
  flex-direction: column;
  justify-content: center;  /* 垂直居中 */
  align-items: center;      /* 水平居中 */
}

/* ===== 波浪文字动画：固定在页面中间 ===== */
#loader .loader-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: default;
  -webkit-box-reflect: below -20px linear-gradient(transparent, #0005);
  z-index: 1;
  white-space: nowrap;
  font-size: 7vw;
}

#loader .loader-text span {
  will-change: transform;
  transform: translateZ(0px);
  position: relative;
  display: inline-flex;
  font-family: sans-serif;
  color: transparent;
  text-transform: uppercase;
  -webkit-text-stroke: 1px #fff9;
  font-weight: 800;
  animation: waveAnimate 2s ease-in-out infinite;
  animation-delay: calc(0.15s * var(--i));
}

@keyframes waveAnimate {
  0% {
    transform: translateY(0px);
    color: transparent;
    text-shadow: none;
  }
  20% {
    transform: translateY(-60px);
    color: #fff;
    text-shadow: 0 0 5px #fff,
    0 0 25px #fff,
    0 0 50px #fff;
  }
  40%, 100% {
    transform: translateY(0px);
    color: transparent;
    text-shadow: none;
  }
}

/* ===== 进度条区域：固定在页面顶部 ===== */
#loader .progress-wrapper {
  position: absolute;
  top: 5px;  /* 距离顶部 60px，可调整 */
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 50%;
  max-width: 500px;
}

/* ===== 进度条容器 ===== */
#loader .progress-container {
  position: relative;
  width: 60%;
}

/* ===== 进度条背景 ===== */
#loader .progress {
  height: 40px;
  width: 100%;
  border-radius: 20px;
  box-sizing: border-box;
  filter: drop-shadow(0 1px 3px rgba(0,0,0,0.22));
  background: rgba(255, 255, 255, 0.15);
  position: relative;
  overflow: hidden;
  z-index: 1;
  border: 4px solid rgba(255, 255, 255, 0.3);
}

/* ===== 流动光效填充 ===== */
#loader .progress .progress-fill {
  position: absolute;
  left: 0;
  bottom: 0;
  top: 0;
  width: 10%;
  background: linear-gradient(to right, #507b87 0%, #008192 44%, #196fb5 100%);
  border-radius: 20px;
  box-shadow: 0 14px 28px rgba(33, 150, 243, 0), 0 10px 10px rgba(9, 188, 215, 0.08);
  animation: loading 6s linear infinite;
  filter: hue-rotate(90deg);
  transition: width 0.3s ease;
}

/* ===== 光效动画 ===== */
@keyframes loading {
  70% {
    filter: hue-rotate(0deg);
  }
  100% {
    width: 100%;
    filter: hue-rotate(-90deg);
  }
}

/* ===== 进度百分比文字 ===== */
#loader .progress-text {
  margin-top: 14px;
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
  font-family: sans-serif;
  letter-spacing: 2px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* ===== 加载完成后淡出 ===== */
#loader.hidden {
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}

/* ===== 页面内容初始隐藏 ===== */
#body-wrap {
  opacity: 0;
  transition: opacity 0.6s ease;
}
#body-wrap.show {
  opacity: 1;
}