/* Shared theme components. The existing guailper.css remains the layout baseline. */
.brand-logo {
  width: 31px;
  height: 31px;
  object-fit: cover;
  border-radius: 10px;
}

.nav-toggle-line { display: block; width: 22px; height: 2px; background: var(--ink); }

.nav-static .site-header { position: relative; }

[data-theme="dark"] {
  --paper: #101b29;
  --paper-raised: rgba(23, 37, 56, .94);
  --rail: #142234;
  --accent: #78b6ed;
  --accent-strong: #a5d3f6;
  --accent-soft: rgba(87, 152, 223, .18);
  --ink: #edf6ff;
  --muted: #a9bdd2;
  --line: rgba(211, 232, 250, .14);
  --shadow: 0 18px 46px rgba(0, 0, 0, .22);
  --card-bg: var(--paper-raised);
}

.site-nav-link.is-active { color: var(--accent-strong); background: var(--accent-soft); }
.site-nav-link:focus-visible,
.nav-more summary:focus-visible,
.nav-toggle:focus-visible,
.toc-link:focus-visible,
.side-link:focus-visible,
.button:focus-visible,
.read-more:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.sidebar-title { margin: 0 0 12px; font-family: var(--serif); font-size: 16px; }
.profile-avatar { width: 72px; height: 72px; border-radius: 22px; object-fit: cover; }
.social-links a { display: inline-flex; align-items: center; gap: 6px; }
.recent-link { display: block; padding: 9px 0; color: var(--ink); border-bottom: 1px solid var(--line); text-decoration: none; }
.recent-link:last-child { border-bottom: 0; }
.recent-link strong { display: block; overflow: hidden; font-family: var(--serif); font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.recent-link time { display: block; margin-top: 3px; color: var(--muted); font-family: var(--mono); font-size: 10px; }

.post-meta-detail { align-items: center; flex-wrap: wrap; }
.meta-separator { color: var(--muted); }
.post-meta a { color: var(--muted); text-decoration: none; }
.post-meta a:hover { color: var(--accent-strong); }
.post-copyright { display: flex; justify-content: space-between; gap: 16px; margin-top: 32px; padding: 14px 16px; color: var(--muted); border-left: 3px solid var(--accent); background: var(--accent-soft); font-size: 12px; }
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag { display: inline-flex; align-items: center; gap: 5px; padding: 4px 9px; color: var(--accent-strong); border-radius: 999px; background: var(--accent-soft); font-size: 12px; text-decoration: none; }
.tag:hover { text-decoration: underline; }
.post-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 28px; }
.post-nav-item { display: flex; flex-direction: column; gap: 7px; min-width: 0; padding: 15px 16px; color: var(--ink); border: 1px solid var(--line); border-radius: 9px; text-decoration: none; }
.post-nav-item.is-next { text-align: right; }
.post-nav-item:hover { border-color: var(--accent); background: var(--accent-soft); }
.nav-label { color: var(--muted); font-size: 11px; }
.post-nav-item strong { overflow: hidden; font-family: var(--serif); font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }

.toc-card { overflow: hidden; }
.toc-title { display: inline-flex; align-items: center; gap: 6px; }
.toc-content { scrollbar-color: var(--accent-soft) transparent; }
.toc-link { border: 1px solid transparent; }
.toc-link.active { font-weight: 600; }

.empty-state { padding: 34px 0; color: var(--muted); text-align: center; }
.taxonomy-page { color: var(--ink); }
.page-intro { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.taxonomy-list { display: grid; gap: 10px; }
.taxonomy-list .category-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.taxonomy-list .category-list-item { margin: 0; }
.taxonomy-list .category-list-link { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px; color: var(--ink); border: 1px solid var(--line); border-radius: 9px; background: var(--paper-raised); text-decoration: none; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.taxonomy-list .category-list-link:hover { border-color: var(--accent); background: var(--accent-soft); transform: translateX(3px); }
.taxonomy-list .category-list-count { color: var(--muted); font-family: var(--mono); font-size: 12px; }
.tag-cloud-list { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px; }
.tag-cloud-list a { display: inline-flex; align-items: center; min-height: 34px; padding: 5px 12px; color: var(--accent-strong); border: 1px solid var(--line); border-radius: 999px; background: var(--accent-soft); text-decoration: none; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.tag-cloud-list a:hover { border-color: var(--accent); background: var(--paper-raised); transform: translateY(-2px); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 16px; color: #fff; border-radius: 8px; background: var(--accent); text-decoration: none; }
.button:hover { background: var(--accent-strong); }
.button-ghost { color: var(--accent-strong); border: 1px solid var(--line); background: transparent; }
.button-ghost:hover { color: var(--ink); background: var(--accent-soft); }
.error-page { max-width: 760px; margin: 0 auto; padding: 120px 24px; text-align: center; }
.error-page h1 { margin: 0; font-family: var(--serif); font-size: clamp(34px, 5vw, 54px); }
.error-page p:not(.eyebrow) { color: var(--muted); }
.error-actions { display: flex; justify-content: center; gap: 12px; margin-top: 26px; }

@media (min-width: 901px) {
  .sidebar-left .page-shell { grid-template-columns: 280px minmax(0, 1fr); }
  .sidebar-left .page-shell > .sidebar { grid-column: 1; grid-row: 1; }
  .sidebar-left .page-shell > .content-column { grid-column: 2; grid-row: 1; }
  .sidebar-left .article-shell > .article-aside { grid-column: 1; grid-row: 1; }
  .sidebar-left .article-shell > .article { grid-column: 2; grid-row: 1; }
}