/* =============================================================
   笔记详情页独立样式 — post.css v1.5
   修复移动端窄屏 (<480px) 内容剪裁 + 代码块横向滚动
   策略：body 从 flex 改 block，消除 flex 链 min-width:auto 扩展
   v1.3: 整合 highlight.js + KaTeX 样式
   v1.5: 迁移到 assets/css/ 统一管理
   ============================================================= */

/* ============ 重置共享样式中的问题规则 ============ */

/* body: 从 flex 改为 block，避免 flex 链 min-width:auto 导致子元素扩展 */
body {
    display: block !important;
    overflow-x: hidden;
    overflow-x: clip;
    max-width: 100%;
    min-height: 100vh;
}

html {
    overflow-x: hidden;
    overflow-x: clip;
    scroll-behavior: smooth;
}

/* main 撑满视口高度，footer 自然贴底（替代 flex margin-top:auto 方案） */
main {
    display: block;
    min-width: 0;
    min-height: calc(100vh - 52px);
}

/* ============ 页面布局 ============ */

.page-wrap {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 32px 0;
    box-sizing: border-box;
}

#postContainer {
    width: 100%;
    box-sizing: border-box;
    min-width: 0;
    max-width: 100%;
}

/* ============ 加载状态 ============ */

.note-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-dim);
}
.note-loading svg { color: var(--primary); }
@keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }
.spin { animation: spin 1s linear infinite; }

/* ============ 空状态 ============ */

.note-empty {
    padding: 60px 20px;
    text-align: center;
}
.note-empty h1 {
    font-size: var(--font-3xl);
    margin-bottom: 16px;
}

/* ============ 笔记文章容器 ============ */

.note-post {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding-bottom: 40px;
    box-sizing: border-box;
}

/* ============ 元信息栏 ============ */

.note-post-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    font-size: var(--font-xs);
    color: var(--text-dim);
    width: 100%;
    box-sizing: border-box;
}

.note-cat-tag {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.note-pinned-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-xs);
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.note-draft-tag {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-xs);
    font-weight: 700;
    color: var(--text-dim);
    background: var(--input-bg);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.note-updated {
    font-size: var(--font-xs);
    color: var(--text-dim);
}

.note-post-meta time {
    white-space: nowrap;
}

/* ============ 标题 ============ */

.note-post-title {
    font-size: var(--font-2xl);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 28px;
    letter-spacing: -0.5px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

/* ============ 正文内容 ============ */

.note-post-content {
    font-size: var(--font-base);
    line-height: 1.8;
    color: var(--text-main);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

/* 标题 */
.note-post-content h1,
.note-post-content h2,
.note-post-content h3,
.note-post-content h4 {
    margin-top: 28px;
    margin-bottom: 12px;
    font-weight: 700;
    line-height: 1.3;
    overflow-wrap: break-word;
    word-break: break-word;
}
.note-post-content h1 { font-size: var(--font-xl); }
.note-post-content h2 { font-size: var(--font-lg); }
.note-post-content h3 { font-size: var(--font-md); }
.note-post-content h4 { font-size: var(--font-base); }

/* 段落 */
.note-post-content p {
    margin-bottom: 14px;
    color: var(--text-main);
    overflow-wrap: break-word;
    word-break: break-word;
}

/* 列表 */
.note-post-content ul,
.note-post-content ol {
    margin: 14px 0;
    padding-left: 24px;
    box-sizing: border-box;
}
.note-post-content li {
    margin-bottom: 6px;
    line-height: 1.8;
    overflow-wrap: break-word;
    word-break: break-word;
}

/* 引用块 */
.note-post-content blockquote {
    margin: 18px 0;
    padding: 14px 20px;
    border-left: 3px solid var(--primary);
    background: var(--primary-soft);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-sub);
    box-sizing: border-box;
    overflow-wrap: break-word;
    word-break: break-word;
}
.note-post-content blockquote p {
    margin: 0;
    color: inherit;
}

/* 行内代码 */
.note-post-content code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.9em;
    background: var(--primary-soft);
    color: var(--primary);
    padding: 2px 6px;
    border-radius: var(--radius-xs);
    word-break: break-all;
}

/* ============ 代码块 — 核心修复 ============ */
/*
  关键：pre 必须有受约束的宽度才能触发 overflow-x:auto 滚动条
  在 block 布局链中，pre 的 width:100% = 父容器宽度
  pre code 用 white-space:pre 不换行，内容超出时 pre 出现横向滚动条
*/
.note-post-content pre {
    display: block;
    margin: 16px 0;
    padding: 16px 20px;
    background: var(--input-bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow-x: auto;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    -webkit-overflow-scrolling: touch;
    /* 防止 pre 自身在 block 链中扩展 */
    min-width: 0;
    /* 确保 pre 不会超出父容器 */
    contain: layout;
}

.note-post-content pre code {
    display: block;
    background: none;
    padding: 0;
    color: var(--text-main);
    font-size: 13px;
    line-height: 1.6;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    /* 不换行，触发 pre 的横向滚动 */
    white-space: pre;
    /* 防止 code 自身换行 */
    word-break: normal;
    overflow: visible;
}

/* ============ 表格 — 可横向滚动 ============ */

.note-post-content table {
    display: block;
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    overflow-x: auto;
    box-sizing: border-box;
    -webkit-overflow-scrolling: touch;
    min-width: 0;
}

.note-post-content th,
.note-post-content td {
    border: 1px solid var(--line);
    padding: 8px 12px;
    text-align: left;
    white-space: nowrap;
}

.note-post-content th {
    background: var(--input-bg);
    font-weight: 700;
}

/* 图片 */
.note-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 14px 0;
}

/* 水平线 */
.note-post-content hr {
    border: none;
    border-top: 1px solid var(--line);
    margin: 24px 0;
}

/* 链接 */
.note-post-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    word-break: break-all;
}

/* ============ 自定义横向滚动条 — ULTRIUMA 风格 ============ */

/* WebKit (Chrome / Safari / Edge) — 亮色 */
.note-post-content pre::-webkit-scrollbar,
.note-post-content table::-webkit-scrollbar {
    height: 7px;
}
.note-post-content pre::-webkit-scrollbar-track,
.note-post-content table::-webkit-scrollbar-track {
    background: rgba(45,55,72,0.06);
    border-radius: 999px;
    margin: 8px 0 4px;
}
.note-post-content pre::-webkit-scrollbar-thumb,
.note-post-content table::-webkit-scrollbar-thumb {
    background: rgba(74,144,226,0.35);
    border-radius: 999px;
    border: 1px solid rgba(74,144,226,0.15);
    transition: background 0.2s ease;
}
.note-post-content pre::-webkit-scrollbar-thumb:hover,
.note-post-content table::-webkit-scrollbar-thumb:hover {
    background: rgba(74,144,226,0.55);
}
.note-post-content pre::-webkit-scrollbar-thumb:active,
.note-post-content table::-webkit-scrollbar-thumb:active {
    background: #4a90e2;
}

/* WebKit — 暗色 */
[data-theme="dark"] .note-post-content pre::-webkit-scrollbar-track,
[data-theme="dark"] .note-post-content table::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.04);
}
[data-theme="dark"] .note-post-content pre::-webkit-scrollbar-thumb,
[data-theme="dark"] .note-post-content table::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.08);
}
[data-theme="dark"] .note-post-content pre::-webkit-scrollbar-thumb:hover,
[data-theme="dark"] .note-post-content table::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.30);
}
[data-theme="dark"] .note-post-content pre::-webkit-scrollbar-thumb:active,
[data-theme="dark"] .note-post-content table::-webkit-scrollbar-thumb:active {
    background: rgba(255,255,255,0.45);
}

/* Firefox — 亮色 */
.note-post-content pre,
.note-post-content table {
    scrollbar-width: thin;
    scrollbar-color: rgba(74,144,226,0.35) rgba(45,55,72,0.06);
}

/* Firefox — 暗色 */
[data-theme="dark"] .note-post-content pre,
[data-theme="dark"] .note-post-content table {
    scrollbar-color: rgba(255,255,255,0.18) rgba(255,255,255,0.04);
}

/* ============ 操作按钮 ============ */

.note-post-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    flex-wrap: wrap;
}

/* ============ 上下篇导航 ============ */

.note-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.note-nav-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    transition: border-color var(--transition);
    box-sizing: border-box;
    overflow: hidden;
}
.note-nav-item:hover {
    border-color: var(--primary);
}
[data-theme="dark"] .note-nav-item:hover {
    border-color: var(--line-strong);
}
.note-nav-prev { text-align: left; }
.note-nav-next { text-align: right; align-items: flex-end; }

.note-nav-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--text-dim);
    white-space: nowrap;
}
.note-nav-prev .note-nav-label { justify-content: flex-start; }
.note-nav-next .note-nav-label { justify-content: flex-end; }

.note-nav-title {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text-main);
    overflow-wrap: break-word;
    word-break: break-word;
}

/* ============ 响应式 ============ */

/* 平板及以下 */
@media (max-width: 640px) {
    .page-wrap {
        padding: 40px 20px 0;
    }
    .note-nav {
        grid-template-columns: 1fr;
    }
    .note-nav-next {
        text-align: left;
        align-items: flex-start;
    }
    .note-nav-next .note-nav-label {
        justify-content: flex-start;
    }
    .note-post-title {
        font-size: var(--font-xl);
    }
}

/* === 核心修复：窄屏 < 480px === */
@media (max-width: 480px) {
    .page-wrap {
        padding: 32px 16px 0;
    }

    .note-post {
        padding-bottom: 32px;
    }

    /* 缩小标题 */
    .note-post-title {
        font-size: var(--font-xl);
        margin-bottom: 20px;
        letter-spacing: -0.3px;
    }

    /* 缩小正文 */
    .note-post-content {
        font-size: var(--font-sm);
        line-height: 1.75;
    }

    /* 代码块：减小内边距 */
    .note-post-content pre {
        margin: 12px 0;
        padding: 12px 14px;
        border-radius: var(--radius-sm);
    }

    .note-post-content pre code {
        font-size: 12px;
        line-height: 1.5;
    }

    /* 引用块：减小内边距 */
    .note-post-content blockquote {
        margin: 14px 0;
        padding: 10px 14px;
    }

    /* 列表：减小缩进 */
    .note-post-content ul,
    .note-post-content ol {
        padding-left: 20px;
    }

    /* 元信息栏：缩小间距 */
    .note-post-meta {
        gap: 8px;
        margin-bottom: 16px;
    }

    /* 导航项：减小内边距 */
    .note-nav-item {
        padding: 12px 14px;
    }

    /* 操作按钮 */
    .note-post-actions {
        gap: 8px;
        margin-top: 24px;
        padding-top: 16px;
    }
}

/* 超窄屏 < 360px */
@media (max-width: 360px) {
    .page-wrap {
        padding: 24px 12px 0;
    }
    .note-post-content pre {
        padding: 10px 12px;
    }
    .note-post-content pre code {
        font-size: 11px;
    }
}

/* ============ highlight.js 代码高亮整合 ============ */

/* 高亮后 code 背景透明，继承 pre 的背景 */
.note-post-content pre code.hljs {
    background: transparent;
    padding: 0;
}

/* 亮色模式：pre 用浅灰底 */
.note-post-content pre {
    background: #f6f8fa;
}
/* 暗色模式：pre 用深灰底 */
[data-theme="dark"] .note-post-content pre {
    background: #0d0d0d;
}

/* ============ KaTeX 数学公式整合 ============ */

/* 块级公式居中 + 上下间距 */
.note-post-content .katex-display {
    margin: 20px 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px 0;
}

/* 行内公式不换行 */
.note-post-content .katex {
    white-space: nowrap;
}