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

:root {
  --bg:           #FFF5E9;
  --bg-surface:   #edeadf;
  --bg-card:      #FFECD6;
  --text:         #1e1c17;
  --muted:        #4a4640;
  --faint:        #8a8780;
  --border:       #ccc8bc;
  --orange:       #f49f0a;
  --orange-light: #fef3d6;
  --orange-dim:   #b87208;
  --pink:         #f45b69;
  --pink-light:   #fde8ea;
  --pink-dim:     #b83d4a;
  --mono:         'IBM Plex Mono', monospace;
  --serif:        'IBM Plex Serif', Georgia, serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--orange-light); }

a {
  color: var(--orange-dim);
  text-decoration-color: var(--orange);
}
a:hover { color: var(--text); }

/* ─────────────────────────────────────────
   SHARED LAYOUT
───────────────────────────────────────── */

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 3rem;
}

.article-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 3rem;
}

/* ─────────────────────────────────────────
   BLOG INDEX — HEADER
   Add class="site-header" to <header> on index.html
───────────────────────────────────────── */

.site-header {
  padding: 5rem 0 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 5rem;
  align-items: start;
}

.header-eyebrow {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--orange-dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.header-eyebrow::before {
  content: '';
  display: inline-block;
  width: 1.5rem;
  height: 1.5px;
  background: var(--orange);
  flex-shrink: 0;
}

h1 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 4.5vw, 3.75rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.05;
  letter-spacing: -0.025em;
}
h1 em {
  font-weight: 400;
  font-style: italic;
  color: var(--muted);
  display: block;
}

.header-right {
  padding-top: 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.header-bio {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.8;
  border-left: 2px solid var(--orange);
  padding-left: 1.1rem;
}

.header-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.header-links a {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--faint);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.12s;
}
.header-links a:hover { color: var(--text); }
.header-links a + a::before {
  content: '/';
  margin-right: 1.25rem;
  color: var(--border);
}

/* ─────────────────────────────────────────
   BLOG INDEX — POSTS
───────────────────────────────────────── */

.posts-section {
  padding: 0 0 5rem;
}

.year-label {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.post {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 1rem 2.5rem;
  padding: 1.35rem 1.25rem;
  margin: 0 -1.25rem;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  border-radius: 2px;
  transition: background 0.12s;
  position: relative;
}
.post:first-of-type { border-top: 1px solid var(--border); }

.post::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--orange);
  border-radius: 1px;
  transition: height 0.15s ease;
}
.post:hover { background: var(--bg-surface); }
.post:hover::before { height: 55%; }

.post-main {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.post-title {
  font-family: var(--serif);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
  transition: color 0.12s;
}
.post:hover .post-title { color: var(--orange-dim); }

.post-desc {
  font-family: var(--serif);
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

.post-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--orange-dim);
  white-space: nowrap;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.2rem;
}

.post-tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--pink-dim);
  background: var(--pink-light);
  border: 1px solid var(--pink);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  letter-spacing: 0.04em;
}

/* ─────────────────────────────────────────
   SHARED FOOTER
───────────────────────────────────────── */

footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.12s;
}
.footer-links a:hover { color: var(--text); }

.footer-copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
}

/* ─────────────────────────────────────────
   ARTICLE — NAV
───────────────────────────────────────── */

.article-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.article-nav-mark {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.article-nav-mark span { color: var(--orange-dim); }

.article-nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.article-nav-links a {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--faint);
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.12s;
}
.article-nav-links a:hover { color: var(--text); }
.article-nav-back { color: var(--orange-dim) !important; }

/* ─────────────────────────────────────────
   ARTICLE — HEADER
───────────────────────────────────────── */

.article-header {
  display: block;
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.article-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--orange-dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.article-eyebrow::before {
  content: '';
  display: inline-block;
  width: 1.5rem;
  height: 1.5px;
  background: var(--orange);
  flex-shrink: 0;
}

.article-title {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.article-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
}

.article-tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--pink-dim);
  background: var(--pink-light);
  border: 1px solid var(--pink);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  letter-spacing: 0.04em;
}

/* ─────────────────────────────────────────
   ARTICLE — SERIES CARD
───────────────────────────────────────── */

.series-card {
  background: var(--orange-light);
  border: 1px solid var(--orange);
  border-radius: 3px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.series-card__eyebrow {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange-dim);
  margin: 0;
}

.series-card__body {
  font-family: var(--serif);
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

.series-card__footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.25rem;
}

.series-card__pip {
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 50%;
  flex-shrink: 0;
}

.series-card__part {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--orange-dim);
  letter-spacing: 0.04em;
}

/* ─────────────────────────────────────────
   ARTICLE — BODY TYPOGRAPHY
───────────────────────────────────────── */

.article-body {
  font-family: var(--serif);
  font-size: 1.0625rem;
  color: var(--muted);
  line-height: 1.8;
}

.article-body p { margin-bottom: 1.4rem; }

.article-body h2 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 3rem 0 1rem;
}

.article-body h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 2.25rem 0 0.75rem;
}

.article-body h4 {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  font-style: italic;
  color: var(--text);
  line-height: 1.4;
  margin: 1.75rem 0 0.6rem;
}

.article-body h5 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--orange-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 1.5rem 0 0.6rem;
}

.article-body strong {
  font-weight: 600;
  color: var(--text);
}

.article-body em { font-style: italic; }

/* ─── Inline code ─── */
.article-body code {
  font-family: var(--mono);
  font-size: 0.8125em;
  background: var(--orange-light);
  color: var(--orange-dim);
  border: 1px solid rgba(244,159,10,0.25);
  padding: 0.1em 0.4em;
  border-radius: 2px;
}

/* ─── Code blocks ─── */
.article-body pre {
  background: #1e1c17;
  border-radius: 3px;
  border: 1px solid #3a3730;
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  overflow-x: auto;
}
.article-body pre code {
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: #f5d98a;
  background: none;
  border: none;
  padding: 0;
}

/* ─── Lists ─── */
.article-body ol {
  counter-reset: article-counter;
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.article-body ol li {
  counter-increment: article-counter;
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  line-height: 1.65;
}
.article-body ol li::before {
  content: counter(article-counter);
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--orange-dim);
  background: var(--orange-light);
  border: 1px solid var(--orange);
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}

.article-body ul {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.article-body ul li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  line-height: 1.65;
}
.article-body ul li::before {
  content: '';
  display: block;
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  background: var(--orange);
  border-radius: 50%;
  margin-top: 0.6rem;
}

/* ─── Figures ─── */
.article-image {
  margin: 2.5rem 0;
}
.article-image img {
  width: 100%;
  display: block;
  border-radius: 2px;
  border: 1px solid var(--border);
}
.article-image img.full-height {
  height: 380px;
  object-fit: cover;
}
.article-image figcaption {
  margin-top: 0.6rem;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ─────────────────────────────────────────
   ARTICLE — AUTHOR
───────────────────────────────────────── */

.article-author {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 0 1.25rem;
  align-items: start;
}

.article-author__avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1.5px solid var(--orange);
  object-fit: cover;
}

.article-author__body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.article-author__label {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange-dim);
}

.article-author__name {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.article-author__bio {
  font-family: var(--serif);
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 56ch;
}

.article-author__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.2rem;
}

.article-author__tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--pink-dim);
  background: var(--pink-light);
  border: 1px solid var(--pink);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  letter-spacing: 0.04em;
}

.article-author__links {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.25rem;
  flex-wrap: wrap;
}

.article-author__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
  text-decoration: none;
  transition: opacity 0.12s;
}
.article-author__link:hover { opacity: 0.8; }
.article-author__link--github { background: #1e1c17; color: #f6f2ea; }
.article-author__link--linkedin { background: #0a66c2; color: #fff; }
.article-author__link svg { width: 12px; height: 12px; fill: currentColor; }

.article-footer {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.article-footer-links { display: flex; gap: 1.5rem; }

.article-footer-links a {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.12s;
}
.article-footer-links a:hover { color: var(--text); }

.article-footer-copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
}

.article-body blockquote.quote {
  margin: 2rem 0;
  padding: 1.1rem 1.4rem;
  border-left: 2px solid var(--orange);
  background: var(--orange-light);
  border-radius: 0 2px 2px 0;
}

.article-body blockquote.quote p,
.article-body blockquote.quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.75;
}

.article-body blockquote.quote cite {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  font-weight: 600;
  color: var(--orange-dim);
  letter-spacing: 0.08em;
}

/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */

@media (max-width: 720px) {
  .wrap { padding: 0 1.5rem; }
  .article-wrap { padding: 0 1.5rem; }

  .site-header {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 3rem 0 2.5rem;
  }

  .post {
    grid-template-columns: 1fr;
    gap: 0.2rem;
    padding: 1.1rem 0;
    margin: 0;
  }
  .post::before { display: none; }
  .post-date { font-size: 10px; }

  .article-author {
    grid-template-columns: 1fr;
  }
  .article-author__avatar { display: none; }

  footer { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}