/* ─────────────────────────────────────────
   Shared design tokens — duplicated from index.html
   (index.html is left untouched; see plan for rationale)
───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #03030a;
  --surface: rgba(255,255,255,0.035);
  --border:  rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.12);
  --text:    #eeeeff;
  --muted:   #5a5a8a;
  --dim:     #2a2a4a;
  --violet:  #8b5cf6;
  --cyan:    #22d3ee;
  --green:   #34d399;
  --yellow:  #fbbf24;
  --red:     #f87171;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

#aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

#glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,0.10) 0%, rgba(34,211,238,0.04) 40%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: left 0.08s ease, top 0.08s ease;
  mix-blend-mode: screen;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/></svg>");
  opacity: 0.028;
  pointer-events: none;
  z-index: 9999;
}

main {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 5rem 1.25rem 4rem;
  max-width: 900px;
  margin: 0 auto;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── Site nav — duplicated from index.html ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.5rem;
  background: rgba(3,3,10,0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.site-nav-links { display: flex; gap: 1.5rem; }
.site-nav-links a {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.site-nav-links a:hover { color: var(--cyan); }

.section-label {
  width: 100%;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #565b66;
  margin-bottom: 34px;
}
.section-label::before { content: '// '; color: var(--dim); }

/* ─────────────────────────────────────────
   Blog index — post list
───────────────────────────────────────── */
.post-list {
  display: flex;
  flex-direction: column;
}

.post-list-end {
  border-top: 1px solid rgba(255,255,255,0.06);
}

.post-row {
  display: grid;
  grid-template-columns: 104px 1fr;
  align-items: start;
  gap: 34px;
  padding: 26px 16px;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.18s ease;
}
.post-row:hover { background: rgba(69,207,224,0.05); }

.post-row-meta {
  padding-top: 4px;
}

.post-row-date {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #6d7280;
  font-variant-numeric: tabular-nums;
}

.post-row-read {
  font-size: 12px;
  color: #4a4f59;
  margin-top: 8px;
}

.post-title {
  font-size: 21px;
  font-weight: 600;
  color: #5fd6e6;
  letter-spacing: 0.01em;
  line-height: 1.28;
}

.post-excerpt {
  font-size: 14px;
  color: #8b909a;
  line-height: 1.65;
  margin-top: 11px;
  max-width: 62ch;
}

.post-row-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
}

.post-row-tags {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.tag {
  font-size: 13px;
  color: #4a90a0;
}

.post-cta {
  font-size: 13px;
  color: #4fd6c0;
  font-weight: 500;
  white-space: nowrap;
}

.empty-state {
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-style: italic;
}

@media (max-width: 640px) {
  .post-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .post-row-meta {
    padding-top: 0;
    display: flex;
    align-items: baseline;
    gap: 10px;
  }
  .post-row-read::before {
    content: '· ';
  }
}

.stack-pill {
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(34,211,238,0.25);
  padding: 0.25em 0.7em;
  border-radius: 999px;
  background: rgba(34,211,238,0.04);
}

/* ─────────────────────────────────────────
   Post page — header + prose
───────────────────────────────────────── */
.post-header {
  width: 100%;
  margin-bottom: 2rem;
}

.post-page-title {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  background: linear-gradient(130deg, #ffffff 20%, #c4b5fd 55%, #22d3ee 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.post-prose {
  width: 100%;
  color: rgba(238,238,255,0.7);
  font-size: clamp(0.9rem, 1.8vw, 1.02rem);
  font-weight: 300;
  line-height: 1.85;
  margin-bottom: 2.5rem;
}
.post-prose p + p,
.post-prose ul + p,
.post-prose ol + p,
.post-prose p + ul,
.post-prose p + ol,
.post-prose p + pre,
.post-prose pre + p,
.post-prose h2 + p,
.post-prose h3 + p { margin-top: 1.25em; }

.post-prose strong { color: var(--text); font-weight: 500; }
.post-prose .accent { color: var(--cyan); font-weight: 400; }
.post-prose em { font-style: italic; }

.post-prose h2 {
  color: var(--text);
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 2em;
  margin-bottom: 0.6em;
}
.post-prose h3 {
  color: var(--text);
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
  font-weight: 700;
  margin-top: 1.75em;
  margin-bottom: 0.5em;
}

.post-prose ul, .post-prose ol {
  padding-left: 1.4em;
  margin-top: 0.5em;
}
.post-prose li + li { margin-top: 0.5em; }

.post-prose blockquote {
  border-left: 2px solid var(--violet);
  padding-left: 1.2em;
  margin: 1.5em 0;
  color: var(--muted);
  font-style: italic;
}

.post-prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: rgba(34,211,238,0.3);
  text-underline-offset: 2px;
}
.post-prose a:hover { text-decoration-color: var(--cyan); }

.post-prose code:not(.hljs) {
  font-size: 0.85em;
  color: var(--cyan);
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.2);
  padding: 0.15em 0.45em;
  border-radius: 5px;
}

.post-prose pre {
  margin: 1.5em 0;
  max-width: 100%;
  overflow-x: auto;
}
.post-prose pre code.hljs {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  font-size: 0.82rem;
  line-height: 1.6;
  overflow-x: auto;
}

/* highlight.js token → site palette */
.hljs-keyword, .hljs-selector-tag, .hljs-operator { color: var(--violet); }
.hljs-string, .hljs-attr, .hljs-attribute, .hljs-symbol { color: var(--green); }
.hljs-comment, .hljs-quote { color: var(--muted); font-style: italic; }
.hljs-number, .hljs-literal, .hljs-regexp { color: var(--yellow); }
.hljs-title, .hljs-function, .hljs-built_in, .hljs-name { color: var(--cyan); }
.hljs-tag { color: var(--muted); }
.hljs-deletion { color: var(--red); }
.hljs-addition { color: var(--green); }

/* ─────────────────────────────────────────
   Footer
───────────────────────────────────────── */
footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding-top: 1rem;
  width: 100%;
}
.foot-links { display: flex; gap: 1.5rem; }
.foot-links a {
  font-size: 0.68rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.foot-links a:hover { color: var(--cyan); }
.foot-copy {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--dim);
  text-transform: uppercase;
}
.foot-copy a { color: inherit; text-decoration: none; transition: color 0.2s; }
.foot-copy a:hover { color: var(--cyan); }

@media (max-width: 540px) {
  main { padding-top: 3.5rem; }
}