/**
 * 双主题Logo与流光跑马灯 - 前端样式
 *
 * 流光层挂在 a.logo-expanded 上（导航栏与页脚共用），高光光带按周期扫过
 * 动画速度/间隔由后端 inline CSS 覆盖（--xwme-shine-cycle 变量 + 同名 keyframes）
 */

a.logo-expanded.xwme-logo-shine-wrap {
  position: relative;
  display: inline-block;
  overflow: hidden;
  vertical-align: middle;
}

a.logo-expanded.xwme-logo-shine-wrap::after {
  content: "";
  position: absolute;
  top: -60%;
  left: 0;
  width: 55%;
  height: 220%;
  pointer-events: none;
  will-change: transform;
  background: linear-gradient(
    100deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0) 35%,
    rgba(255, 255, 255, 0.38) 50%,
    rgba(255, 255, 255, 0) 65%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: translateX(-260%) skewX(-18deg);
  animation: xwme-logo-shine-sweep var(--xwme-shine-cycle, 4.8s) cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
}

/* 暗色模式下高光更明显 */
.io-black-mode a.logo-expanded.xwme-logo-shine-wrap::after {
  background: linear-gradient(
    100deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0) 35%,
    rgba(255, 255, 255, 0.5) 50%,
    rgba(255, 255, 255, 0) 65%,
    rgba(255, 255, 255, 0) 100%
  );
}

/* 默认扫光节奏（后端 inline CSS 按设置覆盖同名 keyframes） */
@keyframes xwme-logo-shine-sweep {
  0% {
    transform: translateX(-260%) skewX(-18deg);
    opacity: 0;
  }
  6% {
    opacity: 1;
  }
  40% {
    transform: translateX(320%) skewX(-18deg);
    opacity: 0;
  }
  100% {
    transform: translateX(320%) skewX(-18deg);
    opacity: 0;
  }
}

/* 无障碍：用户偏好减少动效时关闭流光 */
@media (prefers-reduced-motion: reduce) {
  a.logo-expanded.xwme-logo-shine-wrap::after {
    animation: none;
    content: none;
  }
}