/* nav.css - 垂直折叠导航栏与全局丹心古韵主题样式 */
@font-face {
    font-family: 'LiuKai';
    src: url('/FZSuXinShiLiuKaiS-R-GB.woff2') format('woff2'),
         url('/FZSuXinShiLiuKaiS-R-GB.ttf') format('truetype');
    font-display: swap;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    background-color: var(--bg-color, #e4e8e8);
    background-image: var(--bg-pattern, url('/assets/patterns/canziwen.png?v=20260830_alpha'));
    background-repeat: repeat;
    background-size: 300px 300px;
    background-attachment: fixed;
    font-family: "LiuKai", "KaiTi", "STKaiti", "Songti SC", "SimSun", serif;
}

/* 核心：页面主要内容容器全宽扩展与盒模型规范，由 footer 的 margin-top: auto 自动将页脚推到最底部 */
.container, .main-container, .wrapper, .main-content, .scroll-wrapper, .view-container {
    width: 100%;
    box-sizing: border-box;
    flex: 0 0 auto;
}

/* 全局 Footer 智能沉底吸附规范 */
.footer {
    margin-top: auto !important;
    width: 100%;
    text-align: center;
    padding: 16px 20px 20px;
    color: #7a6a58;
    font-size: 13px;
    box-sizing: border-box;
    border-top: 1px solid var(--primary-border-light, rgba(138, 29, 29, 0.12));
    background-color: transparent;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
    letter-spacing: 0.5px;
}

/* 丹心古韵老宣纸卡片与悬浮投影通用规范 */
.danxin-deckled-card {
    position: relative;
    background-color: transparent;
    filter: var(--danxin-shadow, drop-shadow(0 8px 18px rgba(35, 45, 55, 0.10)) drop-shadow(0 24px 48px rgba(35, 45, 55, 0.12)) drop-shadow(0 45px 80px rgba(35, 45, 55, 0.08)));
    box-sizing: border-box;
}

.danxin-deckled-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    border: 40px solid transparent;
    border-image: url('/assets/scroll/xuan_full_deckled_sheet.png?v=20260816_clean_v1') 60 60 60 60 fill stretch;
    pointer-events: none;
}

/* 左侧固定悬浮面板样式 (覆盖原 glass-panel 或新增) */
.jiapu-sidebar-nav {
    margin-top: 15px;
    width: 100%;
    pointer-events: auto !important;
}

.jiapu-nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column; /* 纵向排列 */
    gap: 5px;
    pointer-events: auto !important;
}

.jiapu-nav-item {
    position: relative;
    border-radius: 6px;
    transition: background-color 0.2s;
    pointer-events: auto !important;
}

.jiapu-nav-item:hover {
    background-color: var(--primary-light, rgba(138, 29, 29, 0.05));
}

.jiapu-nav-link {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: bold;
    padding: 12px 15px;
    display: flex;
    align-items: center;
    justify-content: space-between; /* 为展开箭头留空间 */
    transition: color 0.3s;
    font-family: "LiuKai", "KaiTi", "STKaiti", "Songti SC", "SimSun", serif;
    text-shadow: 0 0 1px rgba(43, 37, 33, 0.25);
    pointer-events: auto !important;
    cursor: pointer;
}

.jiapu-nav-link:hover, .jiapu-nav-item:hover > .jiapu-nav-link {
    color: var(--primary-color);
}

/* 带有子菜单的指示器 */
.has-children > .jiapu-nav-link::after {
    content: "▶";
    font-size: 10px;
    color: #999;
    transition: transform 0.3s;
}

/* PC 端：向右侧弹出 (Flyout) - 东方琉璃毛玻璃悬浮签 */
@media (min-width: 769px) {
    .jiapu-dropdown {
        position: absolute;
        top: 0;
        left: calc(100% + 20px); /* 穿透一级面板右侧 20px padding，精准零缝隙紧贴一级面板外边框 */
        margin-left: 0; /* 彻底去除间隙，0 缝隙紧贴 */
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.99) 0%, rgba(255, 255, 255, 0.97) 100%);
        backdrop-filter: blur(25px) saturate(140%);
        -webkit-backdrop-filter: blur(25px) saturate(140%);
        border: 1px solid rgba(255, 255, 255, 0.95);
        border-radius: 12px;
        box-shadow: 
            inset 0 1px 1.5px rgba(255, 255, 255, 0.95),
            inset 0 -1px 1px rgba(0, 0, 0, 0.03),
            0 14px 40px rgba(60, 42, 24, 0.16),
            0 4px 12px rgba(60, 42, 24, 0.08);
        min-width: 140px;
        list-style: none;
        padding: 6px;
        opacity: 0;
        visibility: hidden;
        transform: translateX(-10px);
        transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 10000;
    }

    .jiapu-nav-item:hover .jiapu-dropdown,
    .jiapu-nav-item.active .jiapu-dropdown {
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
    }
}

/* 移动端：手风琴向下展开 (Accordion) */
@media (max-width: 768px) {
    .glass-panel {
        /* 控制移动端的整体面板宽度，不要太宽 */
        max-width: 240px !important; 
        padding: 15px !important;
    }

    .has-children > .jiapu-nav-link::after {
        content: "▼";
    }

    /* 移动端默认隐藏下拉，通过 JS 切换 */
    .jiapu-dropdown {
        display: none;
        list-style: none;
        padding: 5px 0 5px 15px; /* 缩进 */
        margin: 0;
        background-color: rgba(0, 0, 0, 0.02);
        border-radius: 6px;
    }

    /* 当激活时显示 */
    .jiapu-nav-item.active .jiapu-dropdown {
        display: block;
    }

    .jiapu-nav-item.active > .jiapu-nav-link::after {
        transform: rotate(180deg);
    }
}

.jiapu-dropdown {
    pointer-events: auto !important;
}

.jiapu-dropdown li {
    padding: 0;
    pointer-events: auto !important;
}

.jiapu-dropdown a {
    display: block;
    padding: 10px 16px;
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: bold;
    font-family: "LiuKai", "KaiTi", "STKaiti", "Songti SC", "SimSun", serif;
    text-shadow: 0 0 1px rgba(43, 37, 33, 0.25);
    border-radius: 8px;
    transition: all 0.2s ease;
    pointer-events: auto !important;
    cursor: pointer;
}

.jiapu-dropdown a:hover {
    background-color: var(--primary-light, rgba(138, 29, 29, 0.08));
    color: var(--primary-color, #8a1d1d);
}

/* ================= 谱牒字辈双行夹排 / 割注 / 并列字辈通用样式 ================= */
.parallel-text-block {
    display: inline-flex !important;
    flex-direction: column !important;
    vertical-align: middle !important;
    line-height: 1.15 !important;
    font-size: 0.82em !important;
    text-align: center !important;
    margin: 0 3px !important;
    padding: 0 1px !important;
    font-weight: inherit !important;
    box-sizing: border-box !important;
}

.parallel-text-block .pt-top,
.parallel-text-block .pt-bottom {
    display: block !important;
    letter-spacing: 0.5px !important;
    line-height: 1.15 !important;
}

/* 传统竖排古籍横向卷轴模式适配 */
body.traditional-mode .parallel-text-block {
    display: inline-flex !important;
    flex-direction: row-reverse !important;
    vertical-align: middle !important;
    font-size: 0.75em !important;
    line-height: 1.15 !important;
    margin: 3px 0 !important;
    padding: 1px 0 !important;
}

body.traditional-mode .parallel-text-block .pt-top,
body.traditional-mode .parallel-text-block .pt-bottom {
    writing-mode: vertical-rl !important;
    text-orientation: upright !important;
}

/* 活态文献动态统计短代码与数字渲染 */
.stat-dynamic-badge {
    display: inline-block;
    background: var(--primary-light, rgba(138, 29, 29, 0.08));
    color: var(--primary-color, #8a1d1d);
    border: 1px dashed var(--primary-border-dark, rgba(138, 29, 29, 0.45));
    border-radius: 3px;
    padding: 1px 5px;
    margin: 0 2px;
    font-size: 0.88em;
    font-weight: bold;
    user-select: none;
    vertical-align: baseline;
    cursor: default;
}

.stat-live-number {
    display: inline;
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    color: inherit;
    line-height: inherit;
    text-decoration: inherit;
}

/* =============================================================================
   页面专属图文帮助指引系统样式 (Page Help Guide Styles)
   ============================================================================= */
.btn-help-guide-floating {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(245, 245, 245, 0.7);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(180, 180, 180, 0.5);
    color: rgba(130, 130, 130, 0.9);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease-out;
    z-index: 2100;
    outline: none;
    font-family: inherit;
}

.btn-help-guide-floating:hover {
    transform: scale(1.08) translateY(-1px);
    background-color: rgba(235, 235, 235, 0.95);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    border-color: rgba(150, 150, 150, 0.7);
    color: rgba(90, 90, 90, 1);
}

/* 帮助指南宣纸手卷弹窗背景 */
.help-guide-modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(25, 20, 15, 0.6);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 99999;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 20px;
}

/* 帮助指南宣纸卡片内胆 */
.help-guide-card {
    background-color: var(--card-bg, #ede4d1);
    background-image: var(--card-pattern, url('/assets/scroll/scroll_parchment_seamless.png'));
    background-repeat: repeat;
    background-size: 480px 260px;
    border-radius: 12px;
    border: 1px solid var(--card-border, rgba(138, 29, 29, 0.22));
    border-top: 4px solid var(--primary-color, #8a1d1d);
    filter: var(--danxin-shadow, drop-shadow(0 12px 28px rgba(35, 45, 55, 0.18)));
    width: 820px;
    max-width: 95vw;
    max-height: 86vh;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    padding: 26px 30px 20px;
    animation: helpModalFadeIn 0.25s ease-out;
}

@keyframes helpModalFadeIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.help-guide-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--title-border-bottom, rgba(138, 29, 29, 0.25));
    padding-bottom: 12px;
    margin-bottom: 8px;
}

.help-guide-header h3 {
    margin: 0;
    color: var(--primary-color, #8a1d1d);
    font-size: 1.4rem;
    letter-spacing: 1.5px;
    font-weight: bold;
    text-shadow: var(--title-shadow, 0 0 2px rgba(138, 29, 29, 0.32));
}

.help-guide-close-btn {
    background: none;
    border: none;
    font-size: 26px;
    color: #7a6a58;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s, transform 0.2s;
    outline: none;
}

.help-guide-close-btn:hover {
    color: var(--primary-color, #8a1d1d);
    transform: rotate(90deg);
}

.help-guide-meta {
    font-size: 12px;
    color: #7a6a58;
    display: flex;
    gap: 18px;
    margin-bottom: 16px;
}

.help-guide-body {
    flex: 1 1 auto;
    overflow-y: auto;
    padding-right: 12px;
    margin-bottom: 16px;
    font-size: 15px;
    line-height: 1.8;
    color: #2c2521;
}

.help-guide-body h1, .help-guide-body h2, .help-guide-body h3 {
    color: var(--primary-color, #8a1d1d);
    margin-top: 18px;
    margin-bottom: 8px;
}

.help-guide-body img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 14px rgba(60, 42, 24, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.08);
    margin: 12px 0;
}

.help-guide-body pre, .help-guide-body code {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 4px;
    padding: 2px 6px;
    font-family: inherit;
}

.help-guide-footer {
    display: flex;
    justify-content: flex-end;
    border-top: 1px solid var(--primary-border-light, rgba(138, 29, 29, 0.15));
    padding-top: 12px;
}

.help-guide-action-btn {
    background-color: var(--primary-color, #8a1d1d);
    color: #fff;
    border: 1px solid var(--primary-border-dark, rgba(138, 29, 29, 0.45));
    padding: 7px 22px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: var(--btn-shadow, 0 2px 6px rgba(138, 29, 29, 0.25));
    transition: all 0.2s;
}

.help-guide-action-btn:hover {
    background-color: var(--primary-hover, #6a1515);
    box-shadow: var(--btn-shadow-hover, 0 4px 10px rgba(138, 29, 29, 0.35));
}

/* 打印模式下彻底隐藏导航、浮钮与弹窗 */
@media print {
    .glass-panel,
    .btn-help-guide-floating,
    .help-guide-modal-backdrop,
    .footer {
        display: none !important;
    }
}