/**
 * AKSRT Enhancements — 全局 UI 增强
 *
 * 包含：悬停动效、暗色过渡、滚动感知
 * 所有选择器使用 aksrt- 前缀避免冲突
 *
 * 骨架屏不在此文件：唯一契约是 .placeholder 块 + .post_ajax_loader 容器
 * （inc/helpers/posts-renderer/markup.php 的 aksrt_render_placeholder）。
 */

@keyframes aksrt-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================================
 * 1. 悬停交互动效
 * ============================================================ */

/* 卡片放大 */
.aksrt-hover-zoom {
    transition: transform 0.3s ease;
}

.aksrt-hover-zoom:hover {
    transform: scale(1.02);
}

/* 卡片轻微放大 */
.aksrt-hover-zoom-sm {
    transition: transform 0.3s ease;
}

.aksrt-hover-zoom-sm:hover {
    transform: scale(1.02);
}

/* 悬停显示内容 */
.aksrt-hover-show {
    position: relative;
}

.aksrt-hover-show__content {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
    z-index: 10;
}

.aksrt-hover-show:hover .aksrt-hover-show__content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 关闭按钮旋转 */
.aksrt-ic-close {
    transition: transform 0.3s;
    cursor: pointer;
}

.aksrt-ic-close:hover {
    transform: rotate(270deg);
}

/* 图片悬停缩放（缩略图容器） */
.aksrt-hover-zoom-img img {
    transition: transform 0.3s ease;
}

.aksrt-hover-zoom-img:hover img {
    transform: scale(1.02);
}

.aksrt-hover-zoom-img-sm img {
    transition: transform 0.3s ease;
}

.aksrt-hover-zoom-img-sm:hover img {
    transform: scale(1.02);
}

/* 按钮悬停上浮 */
.aksrt-hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.aksrt-hover-lift:hover {
    transform: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* ============================================================
 * 3. 暗色模式过渡 (View Transitions API)
 * ============================================================ */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}

.dark::view-transition-old(root),
body.dark-theme::view-transition-old(root) {
    z-index: 1;
}

.dark::view-transition-new(root),
body.dark-theme::view-transition-new(root) {
    z-index: 2147483646;
}

::view-transition-old(root) {
    z-index: 2147483646;
}

::view-transition-new(root) {
    z-index: 1;
}

/* backdrop-filter 不支持时的降级 */
@supports not ((-webkit-backdrop-filter: blur(20px)) or (backdrop-filter: blur(20px))) {
    :root {
        --aksrt-blur-bg: #ffffff;
    }

    .dark {
        --aksrt-blur-bg: var(--surface-1);
    }

}

/* ============================================================
 * 4. 滚动方向感知
 * ============================================================ */

/* 向下滚动时隐藏导航栏 */
body.aksrt-scroll-down .site-nav.nav-scroll-hide {
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

body.aksrt-scroll-up .site-nav.nav-scroll-hide {
    transform: translateY(0);
    transition: transform 0.3s ease;
}

/* 滚动时隐藏浮动按钮 */
body.aksrt-scrolling .aksrt-floating-right.scrolling-hide {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

/* body-scroll 状态类 */
body.aksrt-body-scroll .aksrt-show-on-scroll {
    opacity: 1;
    visibility: visible;
}

.aksrt-show-on-scroll {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

/* 可缩放图片的光标 */
.aksrt-cursor-zoom-in {
    cursor: zoom-in;
}