/* ─── Fonts ────────────────────────────────────────────────────── */
@font-face {
  font-family: 'Byrd';
  src: url('/blog/fonts/byrd-extrabold-webfont.woff2') format('woff2');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Atkinson Hyperlegible Next';
  src: url('/blog/fonts/AtkinsonHyperlegibleNext-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Atkinson Hyperlegible Next';
  src: url('/blog/fonts/AtkinsonHyperlegibleNext-RegularItalic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Atkinson Hyperlegible Next';
  src: url('/blog/fonts/AtkinsonHyperlegibleNext-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Atkinson Hyperlegible Next';
  src: url('/blog/fonts/AtkinsonHyperlegibleNext-BoldItalic.woff2') format('woff2');
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

/* ─── Tokens ───────────────────────────────────────────────────── */
:root {
  --b-bg:        #161616;
  --b-text:      #E0DDD8;
  --b-muted:     #9C9790;
  --b-border:    rgba(255, 255, 255, 0.07);
  --b-accent:    #FA5100;
  --b-surface:   #1F1F1F;
  --b-font:      'Atkinson Hyperlegible Next', -apple-system, BlinkMacSystemFont, sans-serif;
  --b-font-disp: 'Byrd', Georgia, serif;
  --b-pad:       48px;
  --b-max:       1040px;
}

/* ─── Reset ────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ─── Base ─────────────────────────────────────────────────────── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--b-font);
  background-color: var(--b-bg);
  color: var(--b-text);
  min-height: 100vh;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ─── Header ───────────────────────────────────────────────────── */
.blog-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  max-width: var(--b-max);
  margin: 0 auto;
  padding: 40px var(--b-pad);
}

.blog-wordmark {
  font-family: var(--b-font-disp);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--b-accent);
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.blog-wordmark:hover { opacity: 0.65; }

.blog-nav {
  display: flex;
  gap: 28px;
}

.blog-nav a {
  font-size: 0.875rem;
  color: var(--b-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.blog-nav a:hover { color: var(--b-text); }

/* ─── Footer ───────────────────────────────────────────────────── */
.blog-footer {
  max-width: var(--b-max);
  margin: 0 auto;
  padding: 64px var(--b-pad) 40px;
  font-size: 0.8125rem;
  color: var(--b-muted);
  text-align: center;
}

/* ─── Blog index ───────────────────────────────────────────────── */
.blog-index {
  max-width: var(--b-max);
  margin: 0 auto;
  padding: 0 var(--b-pad);
}

.blog-intro {
  padding-top: 56px;
  padding-bottom: 72px;
  max-width: 620px;
}

.blog-intro p {
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--b-text);
}

.blog-intro strong {
  font-weight: 400;
  color: var(--b-accent);
}

.blog-list {
  border-top: 1px solid var(--b-border);
}

.blog-list-item {
  border-bottom: 1px solid var(--b-border);
}

.blog-list-item {
  position: relative;
}

.blog-list-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0 48px;
  padding: 36px 0;
}

/* Stretch the title link to cover the whole row */
.blog-list-title a {
  color: var(--b-text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.blog-list-title a::after {
  content: '';
  position: absolute;
  inset: 0;
}

.blog-list-item:hover .blog-list-title a {
  color: var(--b-accent);
}

.blog-list-left {
  padding-top: 1px;
}

.blog-list-title {
  font-family: var(--b-font-disp);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.3;
  color: var(--b-text);
  margin-bottom: 7px;
  transition: color 0.15s ease;
}

.blog-list-date {
  display: block;
  font-size: 0.8125rem;
  color: var(--b-muted);
}

.blog-list-category {
  display: inline-block;
  position: relative;
  z-index: 1;
  margin-top: 5px;
  margin-right: 10px;
  font-size: 0.6875rem;
  color: var(--b-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.blog-list-category:hover { opacity: 0.7; }

.blog-list-excerpt {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--b-muted);
}

.blog-list-arrow {
  color: var(--b-accent);
}

.blog-empty {
  padding: 40px 0;
  color: var(--b-muted);
  font-size: 0.9375rem;
}

/* ─── Category page ────────────────────────────────────────────── */
.blog-intro--category {
  padding-bottom: 52px;
}

.category-page-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--b-accent);
  margin-bottom: 10px;
}

.blog-intro--category strong {
  font-weight: 800;
  font-family: var(--b-font-disp);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--b-text);
  display: block;
  margin-bottom: 20px;
}

.category-back {
  font-size: 0.875rem;
  color: var(--b-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.category-back:hover { color: var(--b-text); }

/* ─── Portfolio link ────────────────────────────────────────────── */
.blog-portfolio-link {
  padding: 80px 0 16px;
}

.blog-portfolio-link a {
  font-family: var(--b-font-disp);
  font-size: 1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--b-accent);
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.blog-portfolio-link a:hover { opacity: 0.65; }

/* ─── Post ─────────────────────────────────────────────────────── */
.post {
  padding-top: 48px;
}

.post-header {
  max-width: var(--b-max);
  margin: 0 auto;
  padding: 0 var(--b-pad) 52px;
}

.post-meta-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.post-date {
  font-size: 0.8125rem;
  color: var(--b-muted);
}

.post-category {
  font-size: 0.6875rem;
  color: var(--b-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.post-category + .post-category {
  margin-left: 10px;
}

.post-category:hover { opacity: 0.7; }

.post-title {
  font-family: var(--b-font-disp);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--b-text);
  max-width: 760px;
}

/* ─── Hero image ───────────────────────────────────────────────── */
.post-hero {
  max-width: var(--b-max);
  margin: 0 auto 56px;
  padding: 0 var(--b-pad);
}

.post-hero img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.post-hero-caption {
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--b-muted);
  line-height: 1.5;
}

.post-hero-caption a {
  color: var(--b-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

/* ─── Post layout grid ─────────────────────────────────────────── */
.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  column-gap: 64px;
  max-width: var(--b-max);
  margin: 0 auto;
  padding: 0 var(--b-pad);
}

/* ─── Prose ────────────────────────────────────────────────────── */
.post-content {
  font-size: 1.0625rem;
  line-height: 1.72;
  color: var(--b-text);
  max-width: 640px;
  padding-bottom: 80px;
}

.post-content p         { margin-bottom: 1.5em; }
.post-content p:last-child { margin-bottom: 0; }

.post-content h2 {
  font-family: var(--b-font-disp);
  font-size: 1.1875rem;
  font-weight: 400;
  line-height: 1.3;
  color: var(--b-text);
  margin: 2.75em 0 0.75em;
}

.post-content h3 {
  font-family: var(--b-font-disp);
  font-size: 1rem;
  font-weight: 400;
  color: var(--b-text);
  margin: 2em 0 0.5em;
}

.post-content a {
  color: var(--b-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(250, 81, 0, 0.35);
  transition: text-decoration-color 0.15s ease;
}

.post-content a:hover {
  text-decoration-color: var(--b-accent);
}

.post-content strong {
  font-weight: 600;
}

.post-content em {
  font-style: italic;
}

.post-content blockquote {
  border-left: 2px solid var(--b-accent);
  padding-left: 20px;
  margin: 2em 0;
  color: var(--b-muted);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--b-border);
  margin: 2.5em 0;
  text-align: center;
}

/* three-dot section break */
.post-content hr::after {
  content: '· · ·';
  display: inline-block;
  position: relative;
  top: -0.65em;
  background: var(--b-bg);
  padding: 0 12px;
  color: var(--b-muted);
  font-size: 0.875rem;
  letter-spacing: 0.25em;
}

.post-content ul,
.post-content ol {
  padding-left: 1.25em;
  margin-bottom: 1.5em;
}

.post-content li    { margin-bottom: 0.4em; }

.post-content code {
  font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
  font-size: 0.875em;
  background: var(--b-surface);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.post-content pre {
  background: var(--b-surface);
  padding: 1.25em;
  overflow-x: auto;
  margin-bottom: 1.5em;
  border-radius: 4px;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
}

/* ─── Footnote refs (inline superscripts) ──────────────────────── */
.footnote-ref {
  font-size: 0;   /* hide the default bracket wrapping */
  line-height: 0;
}

.footnote-ref a {
  font-size: 0.7rem;
  line-height: 0;
  vertical-align: super;
  color: var(--b-accent) !important;
  text-decoration: none !important;
  font-family: var(--b-font);
}

/* ─── Margin column ────────────────────────────────────────────── */
.post-margin {
  position: relative;
}

/* ─── Sidenotes ────────────────────────────────────────────────── */
.sidenote {
  position: absolute;
  left: 0;
  width: 100%;
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--b-muted);
}

.sidenote-number {
  flex-shrink: 0;
  color: var(--b-accent);
  font-size: 0.6875rem;
  line-height: 1;
  margin-top: 3px;
}

.sidenote-body {
  flex: 1;
}

.sidenote-body p {
  margin: 0;
}

.sidenote-body a {
  color: var(--b-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

/* ─── Inline images within prose ──────────────────────────────── */
.post-content img {
  width: 100%;
  height: auto;
  display: block;
  margin: 2em 0;
}

.post-content figure {
  margin: 2.5em 0;
}

.post-content figure img {
  margin: 0;
}

.post-content figcaption {
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--b-muted);
  line-height: 1.5;
}

.post-content figcaption a {
  color: var(--b-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

/* ─── Mobile: hide margin, show footnotes inline ───────────────── */
@media (max-width: 800px) {
  :root {
    --b-pad: 24px;
  }

  .blog-header { padding-top: 28px; padding-bottom: 28px; }

  .blog-intro {
    padding-top: 40px;
    padding-bottom: 52px;
  }

  .blog-intro p { font-size: 1.125rem; }

  .blog-list-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 28px 0;
  }

  .post-layout {
    grid-template-columns: 1fr;
  }

  .post-margin { display: none; }

  /* Footnotes render inline on mobile */
  .footnotes {
    display: block !important;
    margin-top: 2.5em;
    padding-top: 1.5em;
    border-top: 1px solid var(--b-border);
  }

  .footnotes ol {
    padding-left: 1.25em;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--b-muted);
  }

  .footnotes li      { margin-bottom: 0.75em; }

  .footnote-backref {
    color: var(--b-accent);
    text-decoration: none;
    margin-left: 4px;
  }
}