/* =========================================================
   Sakuna -- shared INFORMATIONAL inner-page template.
   Faithful copy of the tokita.online article/blog inner-page
   template (styles.css). Load AFTER sakuna.css so it inherits
   Sakuna's tokens. Use for About, Methodology, and any
   reading-heavy page so they match the blog posts.
   ========================================================= */

body.page-mode { overflow-x: hidden; overflow-y: auto; height: auto; }
.page { min-height: 100vh; }

/* sticky site nav (Sakuna informational pages) */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 20px;
  height: var(--header-h);
  padding: 0 28px;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-nav .logo { display: flex; align-items: baseline; gap: 11px; text-decoration: none; }
.site-nav .nav-links { display: flex; gap: 4px; margin-left: 16px; font-family: var(--mono); font-size: 12px; }
.site-nav .nav-links a {
  padding: 8px 12px; color: var(--text-2);
  border: 1px solid transparent; border-radius: var(--radius);
  text-decoration: none; transition: all var(--t);
}
.site-nav .nav-links a:hover { color: var(--text); border-color: var(--line); }
.site-nav .nav-links a.active { color: var(--text); border-color: var(--line); background: var(--bg-2); }
.site-nav .nav-right { margin-left: auto; display: flex; align-items: center; gap: 16px; font-family: var(--mono); font-size: 10px; }
.site-nav .back-link { color: var(--muted); text-decoration: none; letter-spacing: .08em; text-transform: uppercase; }
.site-nav .back-link:hover { color: var(--text); }
@media (max-width: 960px) {
  .site-nav { padding: 0 16px; gap: 12px; }
  .site-nav .nav-links { margin-left: 8px; }
  .site-nav .logo .tag { display: none; }
  .site-nav .back-link { display: none; }
}

/* layout container */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* ===================== ARTICLE ===================== */
.article-head {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
}
.crumb {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 28px;
  display: inline-flex; align-items: center; gap: 8px;
}
.crumb a { color: var(--text-2); }
.crumb .sep { color: var(--dim); }

.article-cat {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  display: inline-flex; align-items: center; gap: 8px;
}
.article-cat::before { content: ""; width: 6px; height: 6px; background: var(--text); display: inline-block; }

.article-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 4.6vw, 60px);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 18px 0 28px;
  max-width: 22ch;
  text-wrap: balance;
}

.article-meta {
  display: flex; flex-wrap: wrap; gap: 24px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.article-meta span { display: inline-flex; align-items: center; gap: 8px; }
.article-meta .k { color: var(--dim); }
.article-meta .v { color: var(--text); }

.article-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 80px;
  gap: 64px;
  padding: 64px 0 96px;
}

.toc {
  position: sticky;
  top: 96px;
  align-self: start;
  font-family: var(--mono);
  font-size: 12px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  min-width: 0;
}
.toc-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  margin-bottom: 14px;
  display: block;
}
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: t; }
.toc li { counter-increment: t; }
.toc a {
  display: block;
  padding: 9px 0 9px 32px;
  color: var(--text-2);
  border-left: 1px solid var(--line);
  position: relative;
  line-height: 1.4;
  transition: color var(--t), border-color var(--t);
}
.toc a::before {
  content: counter(t, decimal-leading-zero);
  position: absolute;
  left: 10px; top: 9px;
  color: var(--dim);
  font-size: 10px;
}
.toc a:hover { color: var(--text); text-decoration: none; border-left-color: var(--line-2); }
.toc a.active { color: var(--text); border-left-color: var(--text); }
.toc a.active::before { color: var(--text); }

.article-body {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text);
  max-width: var(--read);
  min-width: 0;
}
.article-body p { margin: 0 0 24px; text-wrap: pretty; }
.article-body p:first-of-type::first-line { font-variant: small-caps; letter-spacing: .04em; }
.article-body h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.15;
  letter-spacing: -.01em;
  margin: 56px 0 20px;
  scroll-margin-top: 80px;
  text-wrap: balance;
}
.article-body h2 .h-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .14em;
  display: block;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.article-body strong { font-weight: 600; }
.article-body em { font-style: italic; }
.article-body a {
  color: var(--text);
  border-bottom: 1px solid var(--line-2);
  transition: border-color var(--t);
}
.article-body a:hover { border-bottom-color: var(--text); text-decoration: none; }
.article-body ul { padding-left: 0; list-style: none; margin: 0 0 28px; }
.article-body ul li {
  padding: 8px 0 8px 28px;
  position: relative;
  border-top: 1px solid var(--line);
}
.article-body ul li:last-child { border-bottom: 1px solid var(--line); }
.article-body ul li::before {
  content: ">";
  position: absolute;
  left: 0; top: 8px;
  color: var(--muted);
  font-family: var(--mono);
}
.article-body code {
  font-family: var(--mono);
  font-size: 14px;
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: var(--radius);
  color: var(--text);
}

.pullquote {
  margin: 40px 0;
  padding: 28px 32px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--text);
  background: var(--bg-1);
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.4;
  color: var(--text);
}
.pullquote .who {
  display: block;
  margin-top: 14px;
  font-family: var(--mono);
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .12em;
}

/* FAQ accordion */
.faq { border-top: 1px solid var(--line); margin: 0 0 28px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  list-style: none; cursor: pointer;
  padding: 15px 28px 15px 0;
  position: relative;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute; right: 4px; top: 13px;
  font-family: var(--mono); font-size: 16px; color: var(--muted);
}
.faq-item[open] summary::after { content: "-"; }
.faq-item p {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: 15px; line-height: 1.6;
  color: var(--text-2);
  max-width: 64ch;
  text-wrap: pretty;
}
.faq-item a { color: var(--text); border-bottom: 1px solid var(--line-2); }
.faq-item a:hover { border-bottom-color: var(--text); text-decoration: none; }
.faq-item code { font-family: var(--mono); font-size: 12px; background: var(--bg-2); padding: 2px 6px; border-radius: var(--radius); color: var(--text); }

.callout {
  margin: 32px 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: var(--bg-1);
  font-size: 16px;
  line-height: 1.55;
}
.callout .label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .14em;
  display: block;
  margin-bottom: 8px;
}
.callout p { margin: 0; }

.table-wrap {
  margin: 32px 0;
  border: 1px solid var(--line);
  overflow-x: auto;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 13px;
}
.article-body thead {
  background: var(--bg-2);
}
.article-body th, .article-body td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.article-body th {
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
}
.article-body tbody tr:last-child td { border-bottom: none; }
.article-body tbody tr:hover { background: var(--bg-1); }

.article-aside {
  position: sticky;
  top: 96px;
  align-self: start;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  display: flex; flex-direction: column; gap: 14px;
}
.article-aside .label { text-transform: uppercase; letter-spacing: .14em; }
.article-aside .share {
  display: flex; flex-direction: column; gap: 6px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
.article-aside .share a {
  color: var(--text-2);
  padding: 6px 0;
}
.article-aside .share a:hover { color: var(--text); }

/* reading progress */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--text);
  width: 0%;
  z-index: 80;
  transition: width 60ms linear;
}

/* article foot */
.article-foot {
  border-top: 1px solid var(--line);
  padding: 48px 0;
}
.author-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: center;
  max-width: var(--read);
}
.author-card .avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text-2);
  letter-spacing: .04em;
  overflow: hidden;
}
.author-card .name { font-family: var(--serif); font-size: 19px; margin: 0 0 4px; }
.author-card .bio-line { font-family: var(--mono); font-size: 12px; color: var(--muted); margin: 0; line-height: 1.6; }
.author-card .bio-line a { color: var(--text-2); }
.author-card .bio-line a:hover { color: var(--text); }

.related {
  padding: 64px 0 96px;
  border-top: 1px solid var(--line);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.related-item {
  display: block;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
}
.related-item:hover { text-decoration: none; }
.related-item:hover h4 { text-decoration: underline; text-underline-offset: 3px; }
.related-item .cat {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .12em;
}
.related-item h4 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -.005em;
  margin: 12px 0;
  text-wrap: balance;
}
.related-item .meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  display: flex; gap: 12px;
}

/* ==================== MOBILE ==================== */
@media (max-width: 960px) {
  .container { padding: 0 20px; }
  .article-head { padding: 40px 0 28px; }
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 0 64px;
  }
  .toc {
    position: static;
    max-height: none;
    margin-bottom: 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg-1);
    overflow: hidden;
  }
  .toc summary {
    list-style: none;
    padding: 14px 16px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: .14em;
    cursor: pointer;
    display: flex; justify-content: space-between; align-items: center;
  }
  .toc summary::-webkit-details-marker { display: none; }
  .toc summary::after { content: "+"; color: var(--muted); }
  .toc[open] summary::after { content: "-"; }
  .toc[open] .toc-content { padding: 4px 16px 16px; }
  .toc .toc-label { display: none; }
  .article-aside { display: none; }
  .article-body { font-size: 17px; }
  .article-meta { gap: 12px 18px; font-size: 11px; }
  .author-card { grid-template-columns: 56px 1fr; gap: 16px; }
  .author-card .avatar { width: 56px; height: 56px; font-size: 12px; }
  .related-grid { grid-template-columns: 1fr; gap: 20px; }
  .article-body table { font-size: 12px; }
  .article-body th, .article-body td { padding: 10px 12px; }
}

/* small phones */
@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .pullquote { padding: 20px 18px; font-size: 19px; }
  .callout { padding: 18px 16px; }
  .author-card .name { font-size: 17px; }
}

/* tablet TOC squeeze */
@media (max-width: 1100px) and (min-width: 961px) {
  .article-layout { grid-template-columns: 200px 1fr; gap: 40px; }
  .article-aside { display: none; }
}