/* ============================================================
   Mirror Works — 博客样式
   配色：暖纸底 + 墨色字 + 青绿强调色
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --bg:         #fbfbf8;
  --bg-soft:    #f3f3ee;
  --bg-elev:    #ffffff;
  --text:       #1b1c19;
  --text-soft:  #6d6f66;
  --text-faint: #9a9c92;
  --border:     #e3e3db;
  --border-soft:#eeeee8;
  --accent:     #0d7a6c;
  --accent-soft:#e3f2ef;
  --accent-text:#0a5f54;
  --shadow:     0 1px 2px rgba(24,26,22,.04), 0 8px 24px -12px rgba(24,26,22,.12);
  --radius:     10px;
  --wrap:       1080px;
  --measure:    700px;
  --font-sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
                "Source Han Sans SC", "WenQuanYi Micro Hei", sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Georgia, "Songti SC",
                "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
  --font-mono:  "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono",
                "Courier New", monospace;
}

[data-theme="dark"] {
  --bg:         #101211;
  --bg-soft:    #171a18;
  --bg-elev:    #171a18;
  --text:       #e6e8e2;
  --text-soft:  #9ba29a;
  --text-faint: #6d746d;
  --border:     #262b27;
  --border-soft:#1e231f;
  --accent:     #5fd3c0;
  --accent-soft:#12302c;
  --accent-text:#8ee5d4;
  --shadow:     0 1px 2px rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.6);
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1 0 auto; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent-text); text-decoration: none; }
a:hover { color: var(--accent); }

img { max-width: 100%; height: auto; }

hr { border: 0; border-top: 1px solid var(--border); margin: 2.5em 0; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 10px 16px; z-index: 999;
}
.skip:focus { left: 0; }

::selection { background: var(--accent-soft); color: var(--accent-text); }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border-soft);
}

.header-inner {
  display: flex; align-items: center; gap: 22px;
  min-height: 64px;
}

.brand { display: flex; align-items: center; gap: 11px; color: var(--text); }
.brand:hover { color: var(--text); }

.brand-mark {
  width: 32px; height: 32px; flex: 0 0 32px;
  display: grid; place-items: center;
  background: var(--text); color: var(--bg);
  border-radius: 9px;
  font-family: var(--font-serif);
  font-size: 18px; font-weight: 700;
  letter-spacing: -.02em;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 15.5px; letter-spacing: -.01em; }
.brand-text em {
  font-style: normal; font-size: 11.5px;
  color: var(--text-faint); letter-spacing: .02em;
}

.site-nav { display: flex; gap: 4px; margin-left: auto; }
.site-nav a {
  padding: 6px 11px; border-radius: 7px;
  font-size: 14.5px; color: var(--text-soft);
  transition: background .15s, color .15s;
}
.site-nav a:hover { background: var(--bg-soft); color: var(--text); }
.site-nav a.active { color: var(--accent-text); background: var(--accent-soft); }

.header-tools { display: flex; gap: 2px; }

.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: none; border: 0; border-radius: 8px;
  color: var(--text-soft); cursor: pointer;
  transition: background .15s, color .15s;
}
.icon-btn:hover { background: var(--bg-soft); color: var(--text); }
.only-mobile { display: none; }

#theme-toggle .i-moon { display: none; }
[data-theme="dark"] #theme-toggle .i-sun  { display: none; }
[data-theme="dark"] #theme-toggle .i-moon { display: block; }

/* ---------- 首页 hero ---------- */
.hero { padding: 68px 24px 44px; }
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5.5vw, 50px);
  line-height: 1.1; letter-spacing: -.02em;
  margin: 0 0 14px; font-weight: 600;
}
.hero-desc {
  font-size: 18px; color: var(--text-soft);
  max-width: 46ch; margin: 0 0 10px;
}
.hero-meta { font-size: 13.5px; color: var(--text-faint); margin: 0; }

/* ---------- 文章列表 ---------- */
.post-list { border-top: 1px solid var(--border); }

.post-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-soft);
}

.post-item-date {
  font-size: 13px; color: var(--text-faint);
  font-variant-numeric: tabular-nums;
  padding-top: 5px;
}

.post-item-body h2 {
  margin: 0 0 8px;
  font-size: 21px; font-weight: 600;
  line-height: 1.45; letter-spacing: -.01em;
}
.post-item-body h2 a { color: var(--text); }
.post-item-body h2 a:hover { color: var(--accent-text); }

.post-item-excerpt {
  margin: 0 0 12px;
  color: var(--text-soft);
  font-size: 15px; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-item-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--text-faint);
}
.post-item-meta .reading::after { content: "阅读"; margin-left: 2px; }

.tag-chip {
  display: inline-block;
  padding: 2px 9px; border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-soft) !important;
  font-size: 12px; line-height: 1.7;
  border: 1px solid var(--border-soft);
  transition: background .15s, color .15s, border-color .15s;
}
.tag-chip:hover {
  background: var(--accent-soft); color: var(--accent-text) !important;
  border-color: transparent;
}

.empty { padding: 40px 0; color: var(--text-faint); }

/* ---------- 分页 ---------- */
.pager {
  display: flex; align-items: center; justify-content: space-between;
  padding: 32px 0 8px; font-size: 14px;
}
.pager-now { color: var(--text-faint); font-variant-numeric: tabular-nums; }
.pager .disabled { color: var(--text-faint); opacity: .45; }

/* ---------- 页面标题块 ---------- */
.page-head { padding: 60px 24px 26px; }
.page-head h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 38px);
  margin: 0 0 8px; font-weight: 600; letter-spacing: -.02em;
}
.page-sub { color: var(--text-faint); font-size: 14px; margin: 0; }

/* ---------- 文章页 ---------- */
.post-wrap { padding-top: 56px; padding-bottom: 60px; }

.post-header { max-width: var(--measure); margin: 0 auto 36px; }
.post-crumb { margin: 0 0 20px; font-size: 13.5px; }
.post-crumb a { color: var(--text-faint); }
.post-crumb a:hover { color: var(--accent-text); }

.post-title {
  font-family: var(--font-serif);
  font-size: clamp(29px, 4.6vw, 42px);
  line-height: 1.25; letter-spacing: -.02em;
  margin: 0 0 16px; font-weight: 600;
}

.post-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 7px;
  font-size: 13.5px; color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.post-meta .dot { opacity: .5; }
.meta-tags { display: inline-flex; gap: 6px; flex-wrap: wrap; }

.post-cover {
  width: 100%; border-radius: var(--radius);
  margin-top: 26px; border: 1px solid var(--border-soft);
}

.post-layout { display: block; }

/* --- 正文排版 --- */
.post-content {
  max-width: var(--measure);
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.85;
}

.post-content > *:first-child { margin-top: 0; }

.post-content h2 {
  font-family: var(--font-serif);
  font-size: 25px; font-weight: 600;
  margin: 2.2em 0 .7em; letter-spacing: -.01em;
  padding-bottom: .3em;
  border-bottom: 1px solid var(--border-soft);
}
.post-content h3 {
  font-size: 19.5px; font-weight: 650;
  margin: 1.9em 0 .6em;
}
.post-content h4 {
  font-size: 17px; font-weight: 650;
  margin: 1.7em 0 .5em; color: var(--text-soft);
}

.post-content p { margin: 0 0 1.25em; }

.post-content ul, .post-content ol { margin: 0 0 1.25em; padding-left: 1.4em; }
.post-content li { margin: .35em 0; }
.post-content li > ul, .post-content li > ol { margin: .35em 0; }

.post-content blockquote {
  margin: 1.6em 0;
  padding: .2em 0 .2em 1.2em;
  border-left: 3px solid var(--accent);
  color: var(--text-soft);
  background: linear-gradient(90deg, var(--bg-soft), transparent 60%);
}
.post-content blockquote p:last-child { margin-bottom: 0; }

.post-content img { border-radius: 8px; margin: 1.6em 0; }

.post-content a {
  color: var(--accent-text);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.post-content a:hover { border-bottom-color: var(--accent); }

.post-content code {
  font-family: var(--font-mono);
  font-size: .875em;
  background: var(--bg-soft);
  padding: .15em .42em;
  border-radius: 5px;
  border: 1px solid var(--border-soft);
  word-break: break-word;
}

.post-content pre {
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 1.6em 0;
  font-size: 14px;
  line-height: 1.65;
  position: relative;
}
.post-content pre code {
  background: none; border: 0; padding: 0;
  font-size: inherit; word-break: normal;
}

.copy-btn {
  position: absolute; top: 8px; right: 8px;
  padding: 4px 9px; border-radius: 6px;
  font-size: 11.5px; font-family: var(--font-sans);
  background: var(--bg-elev); color: var(--text-faint);
  border: 1px solid var(--border); cursor: pointer;
  opacity: 0; transition: opacity .15s, color .15s;
}
.post-content pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--accent-text); }
.copy-btn.done { color: var(--accent); }

.post-content table {
  width: 100%; border-collapse: collapse;
  margin: 1.6em 0; font-size: 15px;
  display: block; overflow-x: auto;
}
.post-content th, .post-content td {
  padding: 9px 14px; text-align: left;
  border-bottom: 1px solid var(--border-soft);
}
.post-content th {
  font-weight: 650; color: var(--text-soft);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
.post-content tbody tr:hover { background: var(--bg-soft); }

.post-content .footnote { font-size: 14px; color: var(--text-soft); }
.post-content .task-list-item { list-style: none; margin-left: -1.2em; }

/* --- 目录 --- */
.post-toc {
  position: sticky; top: 92px;
  font-size: 13.5px; line-height: 1.6;
  max-height: calc(100vh - 130px);
  overflow-y: auto;
  padding-left: 4px;
  border-left: 1px solid var(--border-soft);
}
.toc-title {
  font-size: 11.5px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--text-faint);
  margin: 0 0 12px; padding-left: 14px;
}
.post-toc ul { list-style: none; margin: 0; padding: 0; }
.post-toc ul ul { padding-left: 12px; }
.post-toc li { margin: 1px 0; }
.post-toc a {
  display: block; padding: 3px 12px;
  color: var(--text-faint); border-left: 2px solid transparent;
  margin-left: -1px;
}
.post-toc a:hover { color: var(--text); }
.post-toc a.active {
  color: var(--accent-text);
  border-left-color: var(--accent);
  background: var(--accent-soft);
  border-radius: 0 5px 5px 0;
}

/* --- 上下篇 --- */
.post-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin: 60px 0 0; padding-top: 30px;
  border-top: 1px solid var(--border);
}
.post-nav-item {
  display: flex; flex-direction: column; gap: 5px;
  padding: 14px 16px;
  border: 1px solid var(--border-soft); border-radius: var(--radius);
  transition: border-color .15s, background .15s;
}
.post-nav-item:hover { border-color: var(--accent); background: var(--bg-soft); }
.post-nav-item.right { text-align: right; align-items: flex-end; }
.pn-label { font-size: 11.5px; color: var(--text-faint); }
.pn-title { font-size: 14.5px; color: var(--text); font-weight: 550; }

/* ---------- 标签云 ---------- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; padding-bottom: 60px; }
.tag-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 999px;
  background: var(--bg-soft); border: 1px solid var(--border-soft);
  color: var(--text) !important; font-size: 14px;
  transition: background .15s, border-color .15s, transform .1s;
}
.tag-pill:hover {
  background: var(--accent-soft); border-color: transparent;
  transform: translateY(-1px);
}
.pill-count {
  font-size: 11.5px; color: var(--text-faint);
  background: var(--bg-elev); padding: 1px 7px; border-radius: 999px;
}

/* ---------- 归档 ---------- */
.archive-year { padding-bottom: 34px; }
.year-label {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--font-serif); font-size: 26px;
  margin: 30px 0 14px; font-weight: 600;
}
.year-count {
  font-family: var(--font-sans); font-size: 12px;
  color: var(--text-faint); background: var(--bg-soft);
  padding: 2px 9px; border-radius: 999px;
}
.archive-list { list-style: none; margin: 0; padding: 0; }
.archive-list li {
  display: grid; grid-template-columns: 58px 1fr; gap: 18px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border-soft);
}
.archive-list time {
  font-size: 13px; color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.archive-list a { color: var(--text); }
.archive-list a:hover { color: var(--accent-text); }

/* ---------- 长文页（关于/隐私/条款）---------- */
.prose {
  max-width: var(--measure);
  padding-bottom: 70px;
  font-size: 16.5px; line-height: 1.85;
}
.prose h2 {
  font-family: var(--font-serif); font-size: 22px;
  margin: 2em 0 .6em; font-weight: 600;
}
.prose h2:first-of-type { margin-top: 0; }
.prose ul { padding-left: 1.3em; }
.prose li { margin: .35em 0; }
.prose .muted { color: var(--text-faint); font-size: 14px; }

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 110px 24px 120px; }
.nf-code {
  font-family: var(--font-serif); font-size: 88px;
  line-height: 1; margin: 0 0 10px; color: var(--text-faint);
  letter-spacing: -.04em;
}
.notfound h1 { font-size: 24px; margin: 0 0 12px; font-weight: 600; }
.notfound p { color: var(--text-soft); }
.nf-actions { display: flex; gap: 12px; justify-content: center; margin-top: 28px; }

.btn {
  display: inline-block; padding: 9px 20px; border-radius: 8px;
  background: var(--text); color: var(--bg) !important;
  font-size: 14.5px; transition: opacity .15s;
}
.btn:hover { opacity: .85; }
.btn.ghost {
  background: none; color: var(--text) !important;
  border: 1px solid var(--border);
}
.btn.ghost:hover { border-color: var(--accent); color: var(--accent-text) !important; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  background: var(--bg-soft);
  margin-top: auto;
}
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 18px;
  align-items: center; justify-content: space-between;
  padding-top: 32px; padding-bottom: 32px;
}
.foot-brand { margin: 0 0 5px; font-size: 14.5px; font-weight: 550; }
.foot-meta { margin: 0; font-size: 12.5px; color: var(--text-faint); }
.foot-links { display: flex; gap: 18px; font-size: 13.5px; }
.foot-links a { color: var(--text-soft); }
.foot-links a:hover { color: var(--accent-text); }

/* ---------- 搜索浮层 ---------- */
.search-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: color-mix(in srgb, var(--text) 32%, transparent);
  backdrop-filter: blur(3px);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 12vh 20px 20px;
}
.search-overlay[hidden] { display: none; }

.search-box {
  width: 100%; max-width: 620px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.search-head {
  display: flex; align-items: center; gap: 11px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-faint);
}
.search-head input {
  flex: 1; border: 0; background: none; outline: none;
  font-size: 16px; font-family: var(--font-sans); color: var(--text);
}
.search-head kbd {
  font-size: 11px; font-family: var(--font-sans);
  border: 1px solid var(--border); border-radius: 5px;
  padding: 2px 6px; color: var(--text-faint);
}
.search-results { max-height: 52vh; overflow-y: auto; padding: 8px; }
.search-hint, .search-none {
  padding: 26px 16px; text-align: center;
  color: var(--text-faint); font-size: 14px; margin: 0;
}
.sresult {
  display: block; padding: 11px 14px; border-radius: 8px;
  color: var(--text) !important;
}
.sresult:hover, .sresult.sel { background: var(--bg-soft); }
.sresult-title { font-size: 15px; font-weight: 550; margin-bottom: 3px; }
.sresult-title mark, .sresult-snippet mark {
  background: var(--accent-soft); color: var(--accent-text);
  padding: 0 2px; border-radius: 3px;
}
.sresult-meta { font-size: 12px; color: var(--text-faint); }
.sresult-snippet {
  font-size: 13px; color: var(--text-soft);
  margin-top: 4px; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 响应式 ---------- */
@media (min-width: 1120px) {
  .post-layout {
    display: grid;
    grid-template-columns: minmax(0, var(--measure)) 220px;
    gap: 46px;
    justify-content: center;
    max-width: 990px;
    margin: 0 auto;
  }
  .post-header { max-width: var(--measure); margin-left: auto; margin-right: auto; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 18px; }
  .hero { padding: 44px 18px 30px; }

  .brand-text em { display: none; }

  .site-nav {
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 6px 12px 12px;
    box-shadow: var(--shadow);
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 11px 12px; font-size: 15px; }

  .only-mobile { display: grid; }

  .post-item { grid-template-columns: 1fr; gap: 6px; padding: 22px 0; }
  .post-item-date { padding-top: 0; font-size: 12px; }
  .post-item-body h2 { font-size: 19px; }

  .post-content { font-size: 16.5px; }
  .post-content h2 { font-size: 22px; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-item.right { text-align: left; align-items: flex-start; }

  .archive-list li { grid-template-columns: 48px 1fr; gap: 12px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media print {
  .site-header, .site-footer, .post-toc, .post-nav, .search-overlay { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
}