/* site.css — 访客侧样式
   约定：主题色吃设置注入的 --accent 变量；深色三段式——
   data-theme="auto" 跟随系统、"light"/"dark" 为手动指定（Fluid 式三段，改这里时三处都要顾）。
   排版手机优先：正文最大宽 760px、卡片单列起步，桌面再展开。改动时先想手机。 */

:root {
  --accent: #e8710a;
  --bg: #ffffff;
  --fg: #1f2430;
  --muted: #6b7280;
  --line: #e5e7eb;
  --card: #f8f9fb;
  --code-bg: #f3f4f6;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #14161a; --fg: #e5e7eb; --muted: #9ca3af; --line: #2a2e37; --card: #1b1e25; --code-bg: #1f232c;
  }
}
:root[data-theme="dark"] {
  --bg: #14161a; --fg: #e5e7eb; --muted: #9ca3af; --line: #2a2e37; --card: #1b1e25; --code-bg: #1f232c;
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75; font-size: 16px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

#progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--accent); z-index: 60; }

.site-header {
  position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px; background: var(--bg); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; font-size: 18px; color: var(--fg); }
.site-nav { display: flex; gap: 12px; flex-wrap: wrap; }
.site-nav a { color: var(--fg); font-size: 15px; }
.nav-search { margin-left: auto; }
.nav-search input { padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--fg); width: 150px; }
.theme-toggle { border: 1px solid var(--line); background: var(--card); border-radius: 999px; min-width: 44px; min-height: 36px; cursor: pointer; }
.admin-bar { background: var(--accent); color: #fff; padding: 6px 16px; font-size: 14px; }
.admin-bar a { color: #fff; text-decoration: underline; }
.draft-bar { background: #b45309; color: #fff; padding: 8px 12px; border-radius: 8px; margin-bottom: 12px; font-size: 14px; }

.wrap { max-width: 1060px; margin: 0 auto; padding: 16px; }
.hero { padding: 18px 0 6px; }
.hero h1 { font-size: 26px; margin: 0 0 6px; }
.hero p { color: var(--muted); margin: 0; }

.home-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 900px) { .home-grid { grid-template-columns: minmax(0, 1fr) 280px; } }
.side-box { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 14px; background: var(--card); }
.side-box h4 { margin: 0 0 8px; }
.side-box ul, .side-box ol { margin: 0; padding-left: 18px; }
.moment-mini { margin: 6px 0; }
.meta { color: var(--muted); font-size: 13px; }
.empty { color: var(--muted); }

/* 首页卡片（cards）与紧凑列表（list）双布局 */
.post-list.cards { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 700px) { .post-list.cards { grid-template-columns: 1fr 1fr; } }
.post-card { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--card); }
.post-card .card-cover img { width: 100%; height: 170px; object-fit: cover; display: block; }
.post-card .card-body { padding: 12px 14px; }
.post-card h3, .post-row h3 { margin: 0 0 6px; font-size: 18px; }
.post-card h3 a, .post-row h3 a { color: var(--fg); }
.excerpt { color: var(--muted); margin: 0 0 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-list.list .post-row { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.post-row .row-thumb img { width: 118px; height: 82px; object-fit: cover; border-radius: 8px; display: block; }
@media (max-width: 480px) { .post-row .row-thumb img { width: 96px; height: 68px; } }
.pager { display: flex; gap: 14px; align-items: center; margin-top: 16px; }

/* 文章页 */
.article { max-width: 760px; margin: 0 auto; }
.article-title { font-size: 28px; line-height: 1.35; margin: 8px 0; }
.article-body { font-size: 17px; }
.article-body h2 { margin-top: 1.6em; scroll-margin-top: 90px; }
.article-body h3 { scroll-margin-top: 90px; }
.article-body pre { background: var(--code-bg); padding: 12px; border-radius: 10px; overflow-x: auto; font-size: 14px; line-height: 1.6; }
.article-body code { background: var(--code-bg); padding: 1px 5px; border-radius: 5px; font-size: .92em; }
.article-body pre code { background: none; padding: 0; }
.codeblock { position: relative; }
.codeblock .copy-btn { position: absolute; top: 8px; right: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); border-radius: 6px; padding: 4px 10px; min-height: 32px; cursor: pointer; font-size: 13px; }
.article-body blockquote { border-left: 3px solid var(--accent); margin: 1em 0; padding: 4px 14px; color: var(--muted); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.article-body table { border-collapse: collapse; width: 100%; overflow-x: auto; display: block; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 6px 10px; }
.stale-note { border: 1px solid #d97706; color: #92400e; background: #fffbeb; border-radius: 8px; padding: 8px 12px; font-size: 14px; }
:root[data-theme="dark"] .stale-note { background: #292017; color: #fbbf24; }
.toc { border: 1px solid var(--line); border-radius: 10px; padding: 8px 14px; background: var(--card); margin: 14px 0; }
.toc ul { margin: 6px 0; padding-left: 16px; }
.toc .lv3 { margin-left: 14px; }

/* 图片与组图（三种排法 + 混排 + 特殊图） */
.article-body figure { margin: 1.2em 0; }
.article-body figure img { display: block; width: 100%; border-radius: 10px; }
.article-body figcaption, .video-fallback { text-align: center; color: var(--muted); font-size: 13px; margin-top: 6px; }
.gal { display: grid; gap: 8px; }
.gal img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; display: block; }
.gal-2 { grid-template-columns: 1fr 1fr; }
.gal-2 img { aspect-ratio: 4 / 3; }
@media (max-width: 640px) { .gal-2 { grid-template-columns: 1fr; } .gal-2 img { aspect-ratio: 16 / 10; } }
.gal-3 { grid-template-columns: 2fr 1fr; grid-template-rows: 1fr 1fr; }
.gal-3 img:first-child { grid-row: span 2; }
.gal-3 img { aspect-ratio: auto; min-height: 110px; }
@media (max-width: 640px) {
  .gal-3 { grid-template-columns: 1fr 1fr; grid-template-rows: auto auto; }
  .gal-3 img:first-child { grid-column: span 2; aspect-ratio: 16 / 9; }
  .gal-3 img { aspect-ratio: 1 / 1; min-height: 0; }
}
.gal-strip { grid-template-columns: repeat(4, 1fr); }
.gal-strip img { aspect-ratio: 1 / 1; }
@media (max-width: 640px) { .gal-strip { grid-template-columns: repeat(2, 1fr); } }
.fig-long img.img-long { max-height: 480px; width: auto; max-width: 100%; margin: 0 auto; object-fit: cover; object-position: top; }
.video-embed { position: relative; padding-top: 56.25%; border-radius: 10px; overflow: hidden; background: #000; margin: 1.2em 0 0; }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.article-body video { width: 100%; border-radius: 10px; background: #000; }

/* 评论 */
.comments { max-width: 760px; margin: 28px auto 0; }
.comment { border-top: 1px solid var(--line); padding: 12px 0; }
.comment.reply { margin-left: 22px; }
.comment-head { margin: 0 0 4px; }
.comment-body { word-break: break-word; }
.admin-badge { background: var(--accent); color: #fff; border-radius: 4px; padding: 0 6px; font-size: 12px; }
.reply-btn { border: none; background: none; color: var(--accent); cursor: pointer; font-size: 13px; min-height: 32px; }
#commentForm, #unlockForm { display: grid; gap: 10px; margin-top: 14px; }
#commentForm input, #commentForm textarea, #unlockForm input {
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); font-size: 16px; width: 100%;
}
#commentForm textarea { min-height: 90px; resize: vertical; }
#commentForm button, #unlockForm button, .search-form button {
  background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 10px 18px; min-height: 44px; cursor: pointer; font-size: 15px; justify-self: start;
}
.form-msg { color: var(--muted); margin: 0; }

/* 其他页面 */
.page-title { font-size: 24px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; }
.tag-chip { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; color: var(--fg); background: var(--card); }
.search-form { display: flex; gap: 10px; margin: 14px 0; }
.search-form input { flex: 1; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 16px; background: var(--bg); color: var(--fg); }
.moment-list .moment { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 12px; background: var(--card); }
.link-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 700px) { .link-grid { grid-template-columns: 1fr 1fr; } }
.link-card { display: grid; gap: 2px; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; color: var(--fg); background: var(--card); }
.link-card img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.link-card .link-name { font-weight: 700; }
.link-card .link-desc { color: var(--muted); font-size: 14px; }
.link-dead { opacity: .55; }
.link-dead-note { color: #b91c1c; font-size: 13px; }
.archive-group ul { padding-left: 18px; }
.related ul, .prev-next { max-width: 760px; margin-left: auto; margin-right: auto; }
.prev-next { display: flex; justify-content: space-between; gap: 14px; margin-top: 22px; }
.post-tags { max-width: 760px; margin: 18px auto 0; display: flex; gap: 8px; flex-wrap: wrap; }
.site-footer { border-top: 1px solid var(--line); margin-top: 34px; padding: 16px; text-align: center; color: var(--muted); font-size: 14px; }
.notfound { text-align: center; padding: 40px 0; }
.unlock-box { max-width: 480px; margin: 30px auto; }

/* 灯箱 */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,.92); display: none; align-items: center; justify-content: center; z-index: 100; }
.lightbox.open { display: flex; }
.lightbox img { max-width: 94vw; max-height: 86vh; }
.lightbox button { position: absolute; background: rgba(255,255,255,.12); color: #fff; border: none; border-radius: 50%; width: 44px; height: 44px; font-size: 22px; cursor: pointer; }
.lightbox .lb-close { top: 14px; right: 14px; }
.lightbox .lb-prev { left: 10px; top: 50%; }
.lightbox .lb-next { right: 10px; top: 50%; }
.lightbox.single .lb-prev, .lightbox.single .lb-next { display: none; }
.lightbox .lb-count { position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; color: #ddd; }