/**
 * 页面加载器样式 (外部文件)
 * 
 * 注意: 关键的防FOUC样式已内联到HTML,这里保留增强样式
 */

/* 加载遮罩显示时隐藏body滚动条 */
body:has(#page-loader) {
  overflow: hidden;
}

/* 加载遮罩 - 覆盖整个页面 */
#page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, #7a282d);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.3s ease-in-out;
  overflow: hidden;
}

/* 加载动画容器 */
.loader-content {
  text-align: center;
}

/* 加载图标容器 */
.loader-spinner {
  width: 50px;
  height: 50px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: breathe 2s ease-in-out infinite;
}

.loader-spinner img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 缩放呼吸动画 */
@keyframes breathe {
  0%, 100% { 
    transform: scale(1);
    opacity: 1;
  }
  50% { 
    transform: scale(1.2);
    opacity: 0.8;
  }
}

/* 加载文字 */
.loader-text {
  color: #ffffff;
  font-family: "Inter", sans-serif;
  font-weight: bold;
  margin-top: 10px;
  opacity: 0.8;
}

/* 骨架屏 - 占位符动画 */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.1) 25%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 导航栏骨架屏 */
#nav-placeholder.skeleton {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: #ffffff;
  z-index: 1001;
}

/* 页脚骨架屏 */
#footer-placeholder.skeleton {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40px;
  background-color: #f2f2f2;
  z-index: 1002;
}

/* 防止页面跳动 */
body {
  overflow-x: hidden;
  min-height: 100vh;
}