/* ============================================================
   星垣术苑 · 典籍库  dianji.css
   纯前端国风阅读页：书架 + 右侧 sticky 目录 + 移动端弹窗目录
   颜色全部消费 site-theme-vars.css 变量，自动适配暖/红主题
   ============================================================ */

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

.dj-body {
    margin: 0;
    min-height: 100vh;
    font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
    color: var(--text-main);
    background: var(--page-bg);
    line-height: 1.85;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

/* ---------- 淡墨山影背景 ---------- */
.dj-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(1200px 480px at 78% -8%, rgba(var(--gold-rgb), 0.10), transparent 60%),
        radial-gradient(900px 420px at 8% 4%, rgba(var(--accent-rgb), 0.06), transparent 60%),
        var(--page-bg);
}
.dj-bg-mountain {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    width: 100%;
    height: 30vh;
    min-height: 180px;
    fill: rgba(var(--accent-rgb), 0.05);
}
.dj-bg-mountain path { fill: rgba(var(--accent-rgb), 0.05); }
.dj-bg-mountain path[opacity] { fill: rgba(var(--accent-rgb), 0.04); }

/* ---------- 顶栏 ---------- */
.dj-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: var(--header-bg);
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--line-divider);
}
.dj-header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.dj-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--title-color);
    text-decoration: none;
    letter-spacing: 1px;
}
.dj-brand img { border-radius: 50%; display: block; }
.dj-header-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.dj-header-nav a {
    position: relative;
    padding: 6px 14px;
    font-size: 15px;
    color: var(--text-minor);
    text-decoration: none;
    border-radius: 8px;
    transition: color .2s, background .2s;
    white-space: nowrap;
}
.dj-header-nav a:hover { color: var(--accent); background: rgba(var(--gold-rgb), .08); }
.dj-header-nav a.is-active { color: var(--accent); font-weight: 600; }
.dj-header-nav a.is-active::after {
    content: "";
    position: absolute;
    left: 14px; right: 14px; bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--gold);
}

/* 顶栏「返回典籍库全览」按钮（阅读器模式显示，始终可见） */
.dj-back-header {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: 8px;
    padding: 6px 14px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .5px;
    color: var(--btn-solid-text);
    background: var(--btn-solid-bg);
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
    transition: transform .15s, box-shadow .15s;
}
.dj-back-header:hover { box-shadow: 0 6px 16px rgba(var(--shadow-rgb), .25); }
.dj-back-header:active { transform: scale(.96); }
.dj-back-header[hidden] { display: none; }

/* ============================================================
   书架
   ============================================================ */
.dj-shelf {
    max-width: 1180px;
    margin: 0 auto;
    padding: 28px 20px 80px;
}

.dj-hero {
    text-align: center;
    padding: 26px 8px 8px;
}
.dj-hero-title {
    font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
    font-size: 52px;
    font-weight: 400;
    letter-spacing: 10px;
    margin: 0 0 6px;
    color: var(--title-color);
    text-indent: 10px;
}
.dj-hero-sub {
    margin: 0 0 22px;
    color: var(--text-minor);
    font-size: 14px;
    letter-spacing: 1px;
}
.dj-hero-sub strong { color: var(--accent); font-weight: 600; }

/* 检索框 */
.dj-search {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: 0 6px 22px rgba(var(--shadow-rgb), .08);
    transition: border-color .2s, box-shadow .2s;
}
.dj-search:focus-within {
    border-color: var(--gold);
    box-shadow: 0 6px 24px rgba(var(--gold-rgb), .18);
}
.dj-search svg { color: var(--text-faint); flex: none; }
.dj-search input {
    flex: 1;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    font-family: inherit;
    font-size: 15px;
    color: var(--text-main);
}
.dj-search input::placeholder { color: var(--text-faint); }
.dj-search input::-webkit-search-cancel-button { -webkit-appearance: none; }
.dj-search-tip {
    margin: 10px 0 0;
    font-size: 12.5px;
    color: var(--text-faint);
    min-height: 18px;
}

/* 分类 chips */
.dj-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 18px;
}
.dj-chip {
    appearance: none;
    border: 1px solid var(--border);
    background: var(--tag-bg);
    color: var(--tag-text);
    font-family: inherit;
    font-size: 13.5px;
    padding: 6px 16px;
    border-radius: 999px;
    cursor: pointer;
    transition: all .18s;
}
.dj-chip:hover { border-color: var(--gold); color: var(--accent); }
.dj-chip.is-active {
    background: var(--tag-active-bg);
    border-color: var(--tag-active-bg);
    color: var(--tag-active-text);
    font-weight: 600;
}

/* 分组 */
.dj-groups { margin-top: 34px; }
.dj-group { margin-bottom: 40px; scroll-margin-top: 80px; }
.dj-group-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin: 0 4px 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line-divider);
}
.dj-group-title {
    font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
    font-size: 26px;
    font-weight: 400;
    letter-spacing: 3px;
    color: var(--title-color);
}
.dj-group-sub { font-size: 13px; color: var(--text-faint); }
.dj-group-note {
    margin: -8px 4px 16px;
    font-size: 12.5px;
    color: var(--text-faint);
    line-height: 1.7;
}

.dj-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
    gap: 14px;
}

/* 书卡 */
.dj-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    text-align: left;
    padding: 16px 16px 14px;
    background: var(--bg-card);
    border: 1px solid var(--line-divider);
    border-radius: 12px;
    cursor: pointer;
    font-family: inherit;
    color: inherit;
    transition: transform .18s, box-shadow .18s, border-color .18s;
    opacity: 0;
    transform: translateY(10px);
}
.dj-card.in { opacity: 1; transform: none; transition: opacity .45s ease, transform .45s ease, box-shadow .18s, border-color .18s; }
.dj-card:hover {
    transform: translateY(-3px);
    border-color: var(--gold);
    box-shadow: 0 12px 28px rgba(var(--shadow-rgb), .14);
}
.dj-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--title-color);
    line-height: 1.4;
    letter-spacing: .5px;
}
.dj-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 10px;
    font-size: 12px;
    color: var(--text-minor);
}
.dj-card-meta b { font-weight: 500; color: var(--gold-deep); }
.dj-card-brief {
    margin: 0;
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--text-minor);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.dj-card-foot {
    margin-top: auto;
    padding-top: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-faint);
}
.dj-badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 4px;
    font-size: 11px;
    line-height: 1.7;
    border: 1px solid var(--border);
    color: var(--text-minor);
}
.dj-badge--partial { color: var(--danger); border-color: rgba(var(--accent-rgb), .35); }
.dj-card .dj-hl { color: var(--danger); font-weight: 700; background: rgba(var(--gold-rgb), .18); border-radius: 2px; padding: 0 1px; }
.dj-card-snippet {
    margin: 0;
    padding-top: 8px;
    border-top: 1px dashed var(--line-divider);
    font-size: 12.5px;
    color: var(--text-minor);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.dj-card-snippet em { font-style: normal; font-weight: 600; color: var(--accent); }

/* 空态 / 加载 */
.dj-empty { text-align: center; padding: 70px 20px; color: var(--text-minor); }
.dj-empty-seal {
    width: 64px; height: 64px;
    margin: 0 auto 16px;
    display: grid; place-items: center;
    font-family: "Ma Shan Zheng", serif;
    font-size: 34px;
    color: var(--tag-active-text);
    background: var(--gold);
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(var(--gold-rgb), .3);
}
.dj-empty h3 { margin: 0 0 6px; color: var(--title-color); }
.dj-empty p { margin: 0; font-size: 13.5px; }
.dj-loading { text-align: center; padding: 60px; color: var(--text-minor); letter-spacing: 4px; }

/* ============================================================
   阅读器
   ============================================================ */
.dj-reader { max-width: 1180px; margin: 0 auto; padding: 20px 20px 90px; }
.dj-reader-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 264px;
    gap: 32px;
    align-items: start;
}

.dj-article { min-width: 0; }
.dj-back-btn {
    appearance: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 14px;
    padding: 7px 14px;
    font-family: inherit;
    font-size: 13.5px;
    color: var(--text-minor);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    transition: all .18s;
}
.dj-back-btn:hover { color: var(--accent); border-color: var(--gold); }

/* 书头 */
.rd-head {
    background: var(--bg-card);
    border: 1px solid var(--line-divider);
    border-radius: 14px;
    padding: 26px 28px 22px;
    margin-bottom: 26px;
    position: relative;
    overflow: hidden;
}
.rd-head::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), rgba(var(--gold-rgb), .15));
}
.rd-cat {
    font-size: 12.5px;
    letter-spacing: 2px;
    color: var(--gold-deep);
    margin-bottom: 8px;
}
.rd-title {
    font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
    font-size: 34px;
    font-weight: 400;
    letter-spacing: 3px;
    color: var(--title-color);
    margin: 0 0 12px;
    line-height: 1.3;
}
.rd-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 13px;
    color: var(--text-minor);
    margin-bottom: 12px;
}
.rd-meta span { display: inline-flex; gap: 4px; }
.rd-meta b { font-weight: 600; color: var(--gold-deep); }
.rd-intro {
    margin: 0;
    padding-top: 12px;
    border-top: 1px dashed var(--line-divider);
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--text-minor);
}

/* 章节 */
.rd-chapter {
    background: var(--bg-card);
    border: 1px solid var(--line-divider);
    border-radius: 14px;
    padding: 24px 28px 28px;
    margin-bottom: 20px;
    scroll-margin-top: 78px;
}
.rd-chapter-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--title-color);
    margin: 0 0 16px;
    padding: 0 0 12px;
    border-bottom: 2px solid var(--gold-light);
    scroll-margin-top: 78px;
}
.dj-article-body { min-width: 0; }

/* 段落（原文 / 白话 / 注 分列） */
.rd-p { margin: 0 0 14px; }
.rd-p-block {
    border-radius: 8px;
    padding: 10px 14px;
    margin: 0 0 6px;
    font-size: 16.5px;
    line-height: 2;
    letter-spacing: .4px;
}
.rd-p-original {
    background: rgba(var(--gold-rgb), .05);
    border-left: 3px solid var(--gold);
    color: var(--text-main);
}
.rd-p-translation {
    background: rgba(var(--accent-rgb), .045);
    border-left: 3px solid rgba(var(--accent-rgb), .45);
    color: var(--text-minor);
    font-size: 15px;
}
.rd-p-note {
    background: rgba(var(--gold-rgb), .09);
    border: 1px dashed var(--border);
    border-left: 3px solid var(--gold-deep);
    color: var(--text-minor);
    font-size: 14.5px;
}
.rd-p-quote {
    margin: 0 0 6px;
    padding: 8px 14px;
    border-left: 3px solid var(--gold);
    background: rgba(var(--gold-rgb), .05);
    color: var(--text-main);
}
.rd-p-plain { margin: 0 0 6px; color: var(--text-main); }
.rd-p-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-right: 8px;
    padding: 0 7px;
    border-radius: 4px;
    vertical-align: 2px;
}
.rd-p-original .rd-p-label { background: var(--gold); color: var(--tag-active-text); }
.rd-p-translation .rd-p-label { background: rgba(var(--accent-rgb), .55); color: #fff; }
.rd-p-note .rd-p-label { background: var(--gold-deep); color: #fff; }

.rd-h3, .rd-h4 {
    color: var(--title-color);
    letter-spacing: 1px;
    line-height: 1.5;
}
.rd-h3 { font-size: 18.5px; margin: 20px 0 10px; padding-left: 10px; border-left: 4px solid var(--gold); }
.rd-h4 { font-size: 16.5px; margin: 16px 0 8px; color: var(--gold-deep); }

.book-mark { color: var(--gold-deep); font-weight: 600; }
.rd-p-block strong, .rd-p-plain strong, .rd-p-quote strong { color: var(--accent); }

/* ============================================================
   PC 右侧 sticky 目录
   ============================================================ */
.dj-toc-aside {
    position: sticky;
    top: 78px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.dj-toc-panel {
    background: var(--bg-card);
    border: 1px solid var(--line-divider);
    border-radius: 12px;
    padding: 14px 8px 14px 14px;
}
.dj-toc-panel::-webkit-scrollbar { width: 6px; }
.dj-toc-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.dj-toc-title {
    font-family: "Ma Shan Zheng", serif;
    font-size: 19px;
    letter-spacing: 4px;
    color: var(--title-color);
    padding: 2px 8px 10px;
    border-bottom: 1px solid var(--line-divider);
    margin-bottom: 8px;
}
.dj-toc-list a {
    display: block;
    padding: 6px 10px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-minor);
    text-decoration: none;
    border-radius: 6px;
    border-left: 2px solid transparent;
    transition: all .15s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.dj-toc-list a:hover { color: var(--accent); background: rgba(var(--gold-rgb), .08); }
.dj-toc-list a.is-active {
    color: var(--accent);
    font-weight: 700;
    background: rgba(var(--gold-rgb), .12);
    border-left-color: var(--gold);
}

/* ---------- 移动端悬浮目录按钮 ---------- */
.dj-toc-fab {
    display: none;
    position: fixed;
    right: 18px;
    bottom: calc(26px + env(safe-area-inset-bottom));
    z-index: 55;
    align-items: center;
    gap: 6px;
    padding: 12px 18px;
    border: 0;
    border-radius: 999px;
    background: var(--btn-solid-bg);
    color: var(--btn-solid-text);
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    box-shadow: 0 10px 26px rgba(var(--shadow-rgb), .32);
}
.dj-toc-fab:active { transform: scale(.96); }
.dj-toc-fab[hidden] { display: none; }

/* ---------- 移动端目录抽屉 ---------- */
.dj-drawer-mask {
    position: fixed;
    inset: 0;
    z-index: 70;
    background: var(--mask);
    opacity: 0;
    transition: opacity .25s;
}
.dj-drawer-mask.is-open { opacity: 1; }
.dj-drawer {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    z-index: 71;
    width: min(82vw, 340px);
    max-width: 100%;
    background: var(--bg-card);
    box-shadow: -8px 0 30px rgba(var(--shadow-rgb), .25);
    transform: translateX(100%);
    transition: transform .28s cubic-bezier(.22,.61,.36,1);
    display: flex;
    flex-direction: column;
}
.dj-drawer.is-open { transform: none; }
.dj-drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    font-family: "Ma Shan Zheng", serif;
    font-size: 20px;
    letter-spacing: 4px;
    color: var(--title-color);
    border-bottom: 1px solid var(--line-divider);
    flex: none;
}
.dj-drawer-close {
    border: 0;
    background: transparent;
    color: var(--text-minor);
    cursor: pointer;
    padding: 4px;
    display: grid;
    place-items: center;
}
.dj-drawer-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px 12px calc(24px + env(safe-area-inset-bottom));
}
.dj-drawer-list a {
    display: block;
    padding: 10px 12px;
    font-size: 14.5px;
    color: var(--text-main);
    text-decoration: none;
    border-radius: 8px;
    border-left: 3px solid transparent;
    line-height: 1.5;
}
.dj-drawer-list a:active { background: rgba(var(--gold-rgb), .1); }
.dj-drawer-list a.is-active {
    color: var(--accent);
    font-weight: 700;
    background: rgba(var(--gold-rgb), .12);
    border-left-color: var(--gold);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
    .dj-reader-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
    .dj-toc-aside { display: none; }
    .dj-toc-fab { display: inline-flex; }
}

@media (max-width: 640px) {
    body.dj-body { font-size: 15px; }
    .dj-header-inner { padding: 9px 14px; gap: 8px; }
    .dj-brand { font-size: 16px; letter-spacing: 0; }
    .dj-brand img { width: 30px; height: 30px; }
    .dj-header-nav a { padding: 6px 8px; font-size: 13.5px; }
    .dj-header-nav a:nth-child(3) { display: none; } /* 客栈在窄屏收起，保留典籍库 */
    .dj-back-header { margin-left: 4px; padding: 6px 10px; font-size: 13px; }

    .dj-shelf { padding: 18px 14px 70px; }
    .dj-hero { padding-top: 14px; }
    .dj-hero-title { font-size: 40px; letter-spacing: 8px; text-indent: 8px; }
    .dj-hero-sub { font-size: 13px; }
    .dj-search { padding: 10px 14px; }
    .dj-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
    .dj-card { padding: 12px; border-radius: 10px; }
    .dj-card-title { font-size: 15.5px; }
    .dj-card-brief { -webkit-line-clamp: 2; }

    .dj-reader { padding: 12px 12px 84px; }
    .rd-head { padding: 20px 18px 18px; border-radius: 12px; }
    .rd-title { font-size: 27px; letter-spacing: 2px; }
    .rd-chapter { padding: 18px 16px 22px; border-radius: 12px; }
    .rd-chapter-title { font-size: 19px; }
    .rd-p-block, .rd-p-plain, .rd-p-quote { font-size: 16px; line-height: 1.95; }
    .rd-p-translation { font-size: 14.5px; }
}

@media (max-width: 380px) {
    .dj-grid { grid-template-columns: 1fr 1fr; }
    .dj-header-nav a { padding: 6px 6px; }
}

/* 尊重减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .dj-card { opacity: 1; transform: none; transition: none; }
}