/**
 * 主题: 纸鸢图床ZIH
 * 开发者: 白木
 * 开发者的博客: https://gl.baimu.live/
 *
 * 右侧分类目录栏
 *
 * @package Zhiyuan_Imgzus
 */

/* 📁 为右侧分类目录预留页面空间 */
body.cyber-theme:has(.category-rail) {
    padding-right: calc(
        var(--cat-rail-offset-inline) +
        var(--cat-rail-width) +
        var(--cat-rail-content-gap)
    );
}

/* 🪟 右侧悬浮圆角目录 */
.category-rail {
    position: fixed;
    z-index: 102;
    top: var(--cat-rail-offset-block);
    right: var(--cat-rail-offset-inline);
    bottom: var(--cat-rail-offset-block);
    left: auto;
    display: flex;
    width: var(--cat-rail-width);
    overflow: hidden;
    background: var(--cat-rail-bg);
    border: 0.0625rem solid var(--cat-rail-border);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(1rem) saturate(160%);
    -webkit-backdrop-filter: blur(1rem) saturate(160%);
}

.category-rail__overlay {
    display: none;
}

.category-rail__inner {
    display: flex;
    flex-direction: column;
    width: 100%;
    min-height: 0;
    padding: 0.875rem 0.75rem;
}

.category-rail__header {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding: 0 0.625rem;
}

.category-rail__title {
    margin: 0;
    color: var(--text-white);
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.category-rail__close {
    display: none;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    padding: 0;
    color: var(--cat-rail-text);
    background: oklch(0 0 0 / 0);
    border: 0.0625rem solid var(--cat-rail-border);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.category-rail__close .dashicons {
    width: auto;
    height: auto;
    font-size: 1.125rem;
    line-height: 1;
}

.category-rail__nav {
    flex: 1 1 auto;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
}

.category-tree,
.category-tree__children {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.category-tree__children {
    margin-top: 0.25rem;
    padding-left: 0.75rem;
}

.category-tree__item {
    margin: 0;
    padding: 0;
    list-style: none;
}

.category-tree__item.has-children:not(.is-expanded) > .category-tree__children {
    display: none;
}

.category-tree__row {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    min-width: 0;
}

.category-tree__toggle {
    display: inline-flex;
    flex: 0 0 1.5rem;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    padding: 0;
    color: var(--cat-rail-text);
    background: oklch(0 0 0 / 0);
    border: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.category-tree__toggle .dashicons {
    width: auto;
    height: auto;
    font-size: 1rem;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.category-tree__item.has-children:not(.is-expanded) > .category-tree__row .category-tree__toggle .dashicons {
    transform: rotate(-90deg);
}

.category-tree__toggle:hover {
    color: var(--cat-rail-hover-text);
}

.category-tree__link {
    display: block;
    flex: 1 1 auto;
    min-width: 0;
    padding: 0.5rem 0.625rem;
    color: var(--cat-rail-text);
    text-align: left;
    text-decoration: none;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    background: oklch(0 0 0 / 0);
    border: 0.0625rem solid oklch(0 0 0 / 0);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition:
        color var(--transition-fast),
        background-color var(--transition-fast),
        border-color var(--transition-fast);
    font-size: 0.875rem;
    line-height: 1.3;
}

.category-tree__link:hover,
.category-tree__link:focus-visible {
    color: var(--cat-rail-hover-text);
    background: var(--cat-rail-hover-bg);
    border-color: var(--cat-rail-hover-border);
}

.category-tree__link.active {
    color: var(--cat-rail-active-text);
    background: var(--cat-rail-active-bg);
    border-color: var(--cat-rail-active-border);
    font-weight: 600;
}

.category-tree__item[data-depth="2"] .category-tree__link {
    font-size: 0.8125rem;
}

.category-tree__item[data-depth="3"] .category-tree__link {
    font-size: 0.75rem;
}

/* 📱 分类入口默认藏在导航里，仅移动端有目录时显示 */
.site-header .category-rail-toggle {
    display: none;
}

.site-header .category-rail-toggle svg {
    stroke: oklch(0.76 0.1 200);
}

/* 🎯 页脚触发按钮避开右侧目录 */
body.cyber-theme:has(.category-rail) .footer-trigger,
body.cyber-theme:has(.category-rail) .footer-ripple-bg {
    right: calc(
        var(--cat-rail-offset-inline) +
        var(--cat-rail-width) +
        1.5rem
    );
}

@media (max-width: 768px) {
    body.cyber-theme:has(.category-rail) {
        --cat-rail-width: var(--cat-rail-width-mobile);
        padding-right: 0;
    }

    body:has(.category-rail) .site-header .category-rail-toggle {
        display: flex;
    }

    /* 🪟 移动端改为全屏淡出弹窗 */
    .category-rail {
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 1001;
        display: flex;
        align-items: center;
        justify-content: center;
        width: auto;
        overflow: visible;
        background: oklch(0 0 0 / 0);
        border: 0;
        border-radius: 0;
        box-shadow: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition:
            opacity var(--transition-normal),
            visibility var(--transition-normal);
    }

    .category-rail.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .category-rail__overlay {
        display: block;
        position: absolute;
        inset: 0;
        background: oklch(1 0 0 / 0.85);
        backdrop-filter: blur(1.5rem);
        -webkit-backdrop-filter: blur(1.5rem);
    }

    .category-rail__inner {
        position: relative;
        z-index: 1;
        width: 90%;
        max-width: 22rem;
        max-height: min(70vh, 32rem);
        overflow: hidden;
        padding: 1.25rem 1rem 1rem;
        background: var(--cat-rail-bg);
        border: 0.0625rem solid var(--cat-rail-border);
        border-radius: var(--radius-xl);
        box-shadow:
            0 1.5rem 3rem oklch(0.22 0.03 250 / 0.28),
            0 0 2rem oklch(0.66 0.12 200 / 0.08);
        backdrop-filter: blur(1rem) saturate(160%);
        -webkit-backdrop-filter: blur(1rem) saturate(160%);
        transform: scale(0.92) translateY(1.25rem);
        transition: transform var(--transition-normal);
    }

    .category-rail.is-open .category-rail__inner {
        transform: scale(1) translateY(0);
    }

    .category-rail__title {
        font-size: 1.0625rem;
    }

    .category-rail__close {
        display: inline-flex;
        width: 2rem;
        height: 2rem;
        border-radius: var(--radius-full);
    }

    body.cyber-theme:has(.category-rail) .footer-trigger,
    body.cyber-theme:has(.category-rail) .footer-ripple-bg {
        right: 1rem;
    }

    body.category-rail-open {
        overflow: hidden;
    }
}