/* 文章页共享样式：article.html（查询串模式）与 post/<slug>/index.html（静态模式）共用 */

:root {
    --paper: #f7f3ea;
    --paper-deep: #efe9da;
    --ink: #26211a;
    --ink-soft: #7a705e;
    --line: #ddd3bf;
    --seal: #b3432b;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background: var(--paper);
    color: var(--ink);
    font-family: 'Noto Serif SC', 'Songti SC', serif;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.55 0 0 0 0 0.5 0 0 0 0 0.42 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 阅读进度条 ---------- */
#progress {
    position: fixed;
    top: 0; left: 0;
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, var(--seal), #d98a6c);
    z-index: 300;
}

@media (prefers-reduced-motion: reduce) {
    #progress { transition: none; }
}

/* ---------- 顶栏 ---------- */
.page-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(247, 243, 234, 0.86);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}

.page-nav-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-back {
    color: var(--ink);
    text-decoration: none;
    font-size: 0.92rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.25s;
}

.nav-back:hover { color: var(--seal); }

.nav-links { display: flex; gap: 22px; }

.nav-links a {
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.25s;
}

.nav-links a:hover { color: var(--seal); }

/* ---------- 正文 ---------- */
.article-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 72px 24px 80px;
    animation: fadeIn 0.8s ease-out;
}

header.article-head {
    margin-bottom: 48px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 28px;
}

.article-meta {
    color: var(--ink-soft);
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

h1.article-title {
    font-size: clamp(1.7rem, 5vw, 2.5rem);
    font-weight: 900;
    line-height: 1.5;
    letter-spacing: 0.02em;
}

/* ---------- 目录 ---------- */
.toc {
    margin: -18px 0 34px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(239, 233, 218, 0.5);
    font-size: 0.88rem;
}

.toc summary {
    cursor: pointer;
    list-style: none;
    padding: 10px 16px;
    color: var(--ink-soft);
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    user-select: none;
}

.toc summary::-webkit-details-marker { display: none; }

.toc summary::before { content: '▸ '; }
.toc[open] summary::before { content: '▾ '; }

.toc ol {
    list-style: none;
    padding: 2px 16px 12px;
    line-height: 2;
}

.toc ol ol { padding: 0 0 0 18px; font-size: 0.84rem; }

.toc a {
    color: var(--ink-soft);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: color 0.2s, border-color 0.2s;
}

.toc a:hover { color: var(--seal); border-color: var(--seal); }

.toc .toc-h3 a { font-size: 0.92em; }

/* 宽屏：目录改为右侧固定栏，随正文滚动阅读 */
@media (min-width: 1280px) {
    .toc {
        position: fixed;
        right: calc(50% - 380px - 232px);
        top: 96px;
        width: 200px;
        margin: 0;
        background: rgba(247, 243, 234, 0.92);
    }
}

.markdown-body {
    line-height: 2.05;
    font-size: 1.04rem;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 {
    font-weight: 600;
    line-height: 1.6;
    margin: 1.8em 0 0.7em;
    scroll-margin-top: 76px;
}

.markdown-body h2 {
    font-size: 1.35rem;
    padding-left: 14px;
    border-left: 3px solid var(--seal);
}

.markdown-body h3 { font-size: 1.15rem; }
.markdown-body h4 { font-size: 1.02rem; }

.markdown-body p { margin-bottom: 1.2em; }

.markdown-body code {
    background-color: var(--paper-deep);
    padding: 0.15em 0.45em;
    border-radius: 4px;
    font-family: 'Space Mono', monospace;
    font-size: 0.84em;
    color: var(--seal);
}

.markdown-body pre {
    background-color: #2c2620;
    color: #e8e0cf;
    padding: 18px 20px;
    overflow: auto;
    border-radius: 10px;
    margin-bottom: 1.4em;
    font-size: 0.88rem;
    line-height: 1.7;
}

.markdown-body pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

.markdown-body blockquote {
    color: var(--ink-soft);
    border-left: 3px solid var(--seal);
    background: rgba(179, 67, 43, 0.05);
    padding: 10px 20px;
    margin: 0 0 1.4em;
    border-radius: 0 8px 8px 0;
}

.markdown-body blockquote p { margin-bottom: 0.4em; }

.markdown-body img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 28px rgba(38, 33, 26, 0.14);
    margin: 14px 0;
}

.markdown-body a {
    color: var(--seal);
    text-decoration: none;
    border-bottom: 1px solid rgba(179, 67, 43, 0.4);
}

.markdown-body a:hover { border-bottom-color: var(--seal); }

.markdown-body ul, .markdown-body ol {
    padding-left: 1.6em;
    margin-bottom: 1.2em;
}

.markdown-body li { margin-bottom: 0.35em; }

.markdown-body hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 2.2em 0;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.4em;
    font-size: 0.92rem;
    line-height: 1.7;
}

.markdown-body th, .markdown-body td {
    border: 1px solid var(--line);
    padding: 8px 12px;
    text-align: left;
}

.markdown-body th { background: var(--paper-deep); font-weight: 600; }

/* WordPress 导出的表格常带行内对齐 */
.markdown-body td[data-align="center"], .markdown-body th[data-align="center"] { text-align: center; }

/* ---------- 上一篇 / 下一篇 ---------- */
.post-nav {
    margin-top: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.post-nav a {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 14px 18px;
    text-decoration: none;
    transition: border-color 0.25s, background 0.25s;
    min-width: 0;
}

.post-nav a:hover { border-color: var(--seal); background: rgba(179, 67, 43, 0.04); }

.post-nav .pn-label {
    display: block;
    font-family: 'Space Mono', monospace;
    font-size: 0.64rem;
    letter-spacing: 0.2em;
    color: var(--ink-soft);
    margin-bottom: 6px;
}

.post-nav .pn-title {
    display: block;
    color: var(--ink);
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.6;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.post-nav a.next { text-align: right; }

.post-nav .pn-empty { visibility: hidden; }

/* ---------- 页脚 ---------- */
.article-footer {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.article-footer a {
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 0.88rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.25s;
}

.article-footer a:hover { color: var(--seal); }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    .article-container { animation: none; }
}