/* yungen.dev — base theme.
   White ground; warmth carried by a sepia accent and a monospace "utility voice"
   (nav, dates, metadata, chips) set against a serif reading face. Self-contained:
   system font stacks only, no external requests. Dark theme via prefers-color-scheme. */

:root {
  color-scheme: light dark;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
    Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;

  --measure: 42rem;

  --bg: #ffffff;
  --surface: #f6f2ec;
  --text: #23201c;
  --muted: #857b70;
  --faint: #b3a898;
  --link: #8d6959;
  --link-ink: #6f5040;
  --link-visited: #9a7a68;
  --rule: #eae4d9;
  --code-bg: #f4f0e8;
  --mark: #f2e2b8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #191713;
    --surface: #232019;
    --text: #e9e1d3;
    --muted: #9a9082;
    --faint: #6b6154;
    --link: #cba489;
    --link-ink: #dab89e;
    --link-visited: #b79d86;
    --rule: #2f2a22;
    --code-bg: #221f18;
    --mark: #4a3f22;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  max-width: var(--measure);
  margin-inline: auto;
  padding: 2rem 1.25rem 5rem;
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* --- Masthead / footer chrome (mono utility voice) --- */
.masthead {
  font-family: var(--mono);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--rule);
}
.masthead a {
  color: inherit;
  text-decoration: none;
}
.masthead .site-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.masthead .site-title:hover {
  color: var(--link-ink);
}
.masthead nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.05rem;
  align-items: baseline;
}
.masthead nav a {
  color: var(--muted);
  font-size: 0.8rem;
}
.masthead nav a:hover {
  color: var(--text);
}
.masthead nav a.active {
  color: var(--link);
  border-bottom: 2px solid var(--link);
  padding-bottom: 2px;
}

.site-footer {
  font-family: var(--mono);
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.78rem;
}

/* --- Links --- */
a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.12em;
  text-decoration-thickness: 0.06em;
}
a:visited {
  color: var(--link-visited);
}
a:hover {
  color: var(--link-ink);
  text-decoration-thickness: 0.12em;
}

/* --- Headings --- */
h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  line-height: 1.2;
  font-weight: 700;
  margin: 2.2em 0 0.6em;
}
h1 {
  font-size: 2rem;
  letter-spacing: -0.015em;
  margin-top: 0;
}
h2 {
  font-size: 1.5rem;
}
h3 {
  font-size: 1.2rem;
}
h4 {
  font-size: 1.05rem;
}

/* --- Body flow --- */
p {
  margin: 0 0 1.1em;
}
ul,
ol {
  margin: 0 0 1.1em;
  padding-left: 1.4em;
}
li {
  margin: 0.2em 0;
}
hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.5em 0;
}

/* --- Blockquotes / pull-quotes / epigraph --- */
blockquote {
  margin: 1.5em 0;
  padding-left: 1.1em;
  border-left: 3px solid var(--rule);
  color: var(--muted);
  font-style: italic;
}
blockquote p:last-child {
  margin-bottom: 0;
}
.pull-quote {
  border-left: none;
  padding: 0;
  margin: 1.8em auto;
  max-width: 32rem;
  text-align: center;
  font-size: 1.3rem;
  font-style: italic;
  color: var(--text);
}
.epigraph {
  border-left: none;
  padding-left: 0;
  margin: 0 0 2.5em;
  font-style: italic;
  color: var(--muted);
}

/* --- Figures / images --- */
img {
  max-width: 100%;
  height: auto;
}
figure {
  margin: 2em 0;
  text-align: center;
}
figure img {
  border: 1px solid var(--rule);
  border-radius: 2px;
}
figcaption {
  margin-top: 0.6em;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
}

/* --- Code --- */
code,
pre {
  font-family: var(--mono);
  font-size: 0.9em;
}
:not(pre) > code {
  background: var(--code-bg);
  padding: 0.12em 0.34em;
  border-radius: 3px;
}
pre {
  margin: 1.5em 0;
  padding: 1em 1.1em;
  background: var(--code-bg);
  border-radius: 5px;
  overflow-x: auto;
  line-height: 1.5;
}
pre code {
  background: none;
  padding: 0;
}

/* --- Tables --- */
table {
  width: 100%;
  margin: 1.6em 0;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th,
td {
  border: 1px solid var(--rule);
  padding: 0.45em 0.7em;
  text-align: left;
}
th {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
}

/* --- Footnotes (sidenote-ready) --- */
sup a {
  text-decoration: none;
}
.footnotes {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--muted);
}

mark {
  background: var(--mark);
  color: inherit;
}

/* --- Post header + index list --- */
.post-header {
  margin-bottom: 2.5rem;
}
.post-header h1 {
  margin-bottom: 0.3rem;
}
.post-meta {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.post-list {
  list-style: none;
  padding: 0;
}
.post-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.3em 0;
}
.post-list a {
  text-decoration: none;
  color: var(--text);
}
.post-list a:hover {
  color: var(--link);
}
.post-list time {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--faint);
  white-space: nowrap;
}

/* --- Sidenotes ------------------------------------------------------------
   On wide viewports, sidenotes.js promotes footnotes into the right gutter and
   adds `.has-sidenotes` to <body>. Everything below is gated on that class, so
   without JS the native bottom footnotes remain the fallback. */
.footnote-backref {
  text-decoration: none;
  margin-left: 0.3em;
}
.sidenote {
  display: none;
}

@media (min-width: 76rem) {
  /* widen the page to open a right gutter; text stays at the measure */
  body.has-sidenotes {
    max-width: 60rem;
  }
  body.has-sidenotes .masthead,
  body.has-sidenotes .site-footer,
  body.has-sidenotes .post-header,
  body.has-sidenotes .post-body,
  body.has-sidenotes .backlinks,
  body.has-sidenotes .post-list {
    max-width: 42rem;
  }

  body.has-sidenotes article {
    position: relative;
  }
  body.has-sidenotes .footnotes {
    display: none; /* hidden only when live sidenotes replace them */
  }

  body.has-sidenotes .sidenote {
    display: block;
    position: absolute;
    left: 45rem;
    width: 14rem;
    margin: 0;
    font-family: var(--sans);
    font-size: 0.78rem;
    line-height: 1.5;
    color: var(--muted);
  }
  body.has-sidenotes .sidenote p {
    display: inline;
    margin: 0;
  }
  body.has-sidenotes .sidenote .sidenote-num {
    margin-right: 0.35em;
    font-weight: 700;
    color: var(--text);
  }
}

/* --- Tags ------------------------------------------------------------------ */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.7rem;
}
.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.12em 0.65em;
}
.tag:hover {
  color: var(--text);
  border-color: var(--faint);
}

.tag-index {
  list-style: none;
  padding: 0;
}
.tag-index li {
  padding: 0.35em 0;
}
.tag-index a {
  text-decoration: none;
}
.tag-index a:hover {
  text-decoration: underline;
}
.tag-count {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--faint);
}

/* --- Backlinks ------------------------------------------------------------- */
.backlinks {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}
.backlinks h2 {
  margin: 0 0 0.6rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}
.backlink-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.backlink-list li {
  padding: 0.2em 0;
}
.backlink-list a {
  text-decoration: none;
}
.backlink-list a:hover {
  text-decoration: underline;
}

/* --- Reviews catalog ------------------------------------------------------- */
.lede {
  color: var(--muted);
  font-style: italic;
  margin: 0 0 1.6rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
}
.pill {
  font: inherit;
  border: 1px solid var(--rule);
  background: var(--surface);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.28em 0.9em;
  cursor: pointer;
}
.pill:hover {
  color: var(--text);
  border-color: var(--faint);
}
.pill.active {
  background: var(--link);
  border-color: var(--link);
  color: var(--bg);
}

.cards {
  display: flex;
  flex-direction: column;
}
.rev {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 1.1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
}
.rev__cover {
  width: 68px;
  height: 102px;
  border-radius: 3px;
  overflow: hidden;
  display: grid;
  place-items: center;
  box-shadow: 0 1px 2px rgba(80, 60, 40, 0.1);
}
.rev__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rev__cover--ph {
  background: linear-gradient(150deg, var(--link), var(--link-ink));
  color: #fff;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
}
.rev__title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.3;
}
.rev__title .yr {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.95rem;
}
.rev__by {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--muted);
  font-weight: 400;
}
.rev__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--faint);
  margin: 0.2rem 0 0.55rem;
}
.rev__take {
  color: var(--text);
}
.rev__take p {
  margin: 0 0 0.6em;
}
.rev__take p:last-child {
  margin-bottom: 0;
}
.rev__take.clamp {
  max-height: 3.3em;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(#000 55%, transparent);
  mask-image: linear-gradient(#000 55%, transparent);
}
.rev__foot {
  margin-top: 0.6rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.74rem;
}
.rev-more {
  font: inherit;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
}
.rev-more:hover {
  color: var(--link);
}
.rev__foot a {
  text-decoration: none;
}
.rev__foot a:hover {
  text-decoration: underline;
}

/* --- Photos gallery -------------------------------------------------------- */
.album-h {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin: 2rem 0 0.9rem;
}
.album-h h2 {
  margin: 0;
  font-size: 1.25rem;
}
.album-h .when {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--muted);
}
.gallery {
  columns: 3 130px;
  column-gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.gallery .ph {
  width: 100%;
  margin: 0 0 0.6rem;
  display: block;
  border-radius: 3px;
  break-inside: avoid;
  box-shadow: 0 1px 2px rgba(80, 60, 40, 0.1);
}

/* --- Syntax highlighting tokens (class-based, theme-aware) ----------------- */
:root {
  --tk-keyword: #9333a8;
  --tk-string: #2a7d2a;
  --tk-number: #b5690a;
  --tk-comment: #8a8a8a;
  --tk-function: #2a5db0;
  --tk-type: #0a7d7d;
  --tk-builtin: #2a5db0;
  --tk-constant: #b5690a;
  --tk-variable: #7a5a00;
  --tk-tag: #b02a2a;
  --tk-attribute: #b5690a;
  --tk-punct: #777;
}
@media (prefers-color-scheme: dark) {
  :root {
    --tk-keyword: #c586c0;
    --tk-string: #8ec98e;
    --tk-number: #d7a06a;
    --tk-comment: #7f7f7f;
    --tk-function: #7aa7f0;
    --tk-type: #4ec9b0;
    --tk-builtin: #7aa7f0;
    --tk-constant: #d7a06a;
    --tk-variable: #dcdcaa;
    --tk-tag: #e06c75;
    --tk-attribute: #d7a06a;
    --tk-punct: #9a9a95;
  }
}
.tk-keyword {
  color: var(--tk-keyword);
}
.tk-string {
  color: var(--tk-string);
}
.tk-number {
  color: var(--tk-number);
}
.tk-comment {
  color: var(--tk-comment);
  font-style: italic;
}
.tk-function {
  color: var(--tk-function);
}
.tk-type {
  color: var(--tk-type);
}
.tk-builtin {
  color: var(--tk-builtin);
}
.tk-constant {
  color: var(--tk-constant);
}
.tk-variable {
  color: var(--tk-variable);
}
.tk-tag {
  color: var(--tk-tag);
}
.tk-attribute {
  color: var(--tk-attribute);
}
.tk-punct {
  color: var(--tk-punct);
}

/* --- Link popups (Layer C) -------------------------------------------------
   A hovered internal link with an annotation floats a card (popup.js). The
   .link-annotated indicator is added by JS, so it only appears on hover-capable
   devices. */
.link-annotated {
  text-decoration-line: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.link-popup {
  position: absolute;
  z-index: 50;
  max-width: 420px;
  padding: 0.7rem 0.85rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow:
    0 6px 24px rgba(80, 60, 40, 0.16),
    0 1px 3px rgba(80, 60, 40, 0.12);
  font-family: var(--serif);
  font-size: 0.9rem;
  line-height: 1.5;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.12s ease;
}
.link-popup.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.link-popup__title {
  margin: 0 0 0.15rem;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.3;
}
.link-popup__title a {
  color: var(--text);
  text-decoration: none;
}
.link-popup__title a:hover {
  color: var(--link-ink);
  text-decoration: underline;
}
.link-popup__byline {
  margin: 0 0 0.45rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}
.link-popup__abstract {
  margin: 0;
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  .link-popup {
    border-color: var(--faint);
    box-shadow:
      0 6px 24px rgba(0, 0, 0, 0.5),
      0 1px 3px rgba(0, 0, 0, 0.4);
  }
}