@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --bg:       oklch(0 0 0);
  --card:     oklch(0.2097 0.0080 274.5332);
  --border:   oklch(0.2674 0.0047 248.0045);
  --fg:       oklch(0.9328 0.0025 228.7857);
  --fg-muted: oklch(0.5637 0.0078 247.9662);
  --ring:     oklch(0.6818 0.1584 243.3540);
  --radius:   1.3rem;
}

html { color-scheme: dark; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Iframe component frames ── */
.header-frame {
  position: sticky; top: 0; z-index: 100;
  width: 100%; height: 61px; /* 60px nav + 1px border */
  border: none; display: block;
}
.footer-frame {
  width: 100%; height: 340px;
  border: none; display: block;
}

/* ── Header ── */
.blog-header {
  background: color-mix(in oklch, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 56px;
}
.blog-header-inner {
  max-width: 1100px; margin: 0 auto;
  height: 56px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
.blog-logo {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85rem; font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--fg);
  text-decoration: none;
}
.blog-logo span { color: var(--ring); }
.blog-nav { display: flex; align-items: center; gap: 1.25rem; }
.blog-nav a {
  font-size: 0.78rem; font-weight: 500;
  color: var(--fg-muted);
  transition: color 0.15s;
}
.blog-nav a:hover { color: var(--fg); }
.btn-cta {
  font-size: 0.75rem; font-weight: 700;
  padding: 0.4rem 0.9rem;
  background: var(--ring); color: #000;
  border-radius: 8px;
  transition: opacity 0.15s;
  white-space: nowrap;
}
.btn-cta:hover { opacity: 0.88; color: #000; }

/* ── Footer ── */
.blog-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  margin-top: 5rem;
}
.blog-footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
  font-size: 0.75rem; color: var(--fg-muted);
  font-family: 'JetBrains Mono', monospace;
}
.blog-footer a { color: var(--fg-muted); transition: color 0.15s; }
.blog-footer a:hover { color: var(--ring); }
.blog-footer-links { display: flex; gap: 1.5rem; }

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem; color: var(--fg-muted);
  margin-bottom: 2rem;
}
.breadcrumb a { color: var(--ring); font-weight: 600; }
.breadcrumb span { color: var(--border); }

/* ── Page wrapper ── */
.blog-page { max-width: 1100px; margin: 0 auto; padding: 3.5rem 1.5rem 5rem; }
.post-page  { max-width: 720px;  margin: 0 auto; padding: 3.5rem 1.5rem 5rem; }

/* ── Page title block ── */
.page-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ring); margin-bottom: 0.6rem;
}
.page-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900; letter-spacing: -0.03em;
  color: var(--fg); line-height: 1.15;
  margin-bottom: 0.75rem;
}
.page-desc {
  font-size: 0.88rem; color: var(--fg-muted);
  line-height: 1.7; max-width: 500px;
}

/* ── Category tabs ── */
.cat-tabs { display: flex; gap: 0.4rem; flex-wrap: wrap; margin: 2rem 0 2.5rem; }
.cat-tab {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem; font-weight: 700;
  padding: 0.38rem 1rem; border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--fg-muted); background: transparent;
  text-decoration: none;
  transition: border-color 0.14s, color 0.14s;
}
.cat-tab:hover, .cat-tab.active {
  border-color: var(--ring); color: var(--ring);
}

/* ── Section header ── */
.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 1.1rem; gap: 1rem;
}
.section-title { font-size: 0.82rem; font-weight: 800; color: var(--fg); letter-spacing: -0.01em; }
.section-desc  { font-size: 0.7rem; color: var(--fg-muted); margin-top: 0.15rem; }
.section-link  {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem; color: var(--ring); font-weight: 600; white-space: nowrap;
}
.section-link:hover { text-decoration: underline; }

/* ── Post grid ── */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.1rem;
  margin-bottom: 3.5rem;
}

/* ── Post card ── */
.post-card {
  display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
  text-decoration: none; color: inherit;
  transition: border-color 0.18s, transform 0.18s;
}
.post-card:hover {
  border-color: color-mix(in oklch, var(--ring) 45%, transparent);
  transform: translateY(-2px);
}
.post-card-cover {
  width: 100%; height: 160px; object-fit: cover; flex-shrink: 0;
}
.post-card-placeholder {
  height: 100px; flex-shrink: 0;
  background: linear-gradient(135deg, color-mix(in oklch, var(--ring) 7%, transparent), transparent);
  display: flex; align-items: center; justify-content: center;
}
.post-card-placeholder span {
  font-family: 'JetBrains Mono', monospace; font-size: 1.4rem; opacity: 0.15;
}
.post-card-body { padding: 1.1rem 1.3rem 1.3rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.post-card-title { font-size: 0.9rem; font-weight: 800; letter-spacing: -0.01em; color: var(--fg); line-height: 1.4; }
.post-card-excerpt {
  font-size: 0.76rem; color: var(--fg-muted); line-height: 1.65; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.post-card-meta {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 0.4rem; margin-top: auto;
}
.post-card-date { font-size: 0.68rem; color: var(--fg-muted); font-family: 'JetBrains Mono', monospace; }
.post-card-read { font-size: 0.7rem; color: var(--ring); font-weight: 600; }

/* ── Post list (category page) ── */
.post-list { display: flex; flex-direction: column; gap: 0.85rem; }
.post-row {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1rem;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.25rem 1.4rem;
  text-decoration: none; color: inherit;
  transition: border-color 0.16s, transform 0.16s;
}
.post-row:hover {
  border-color: color-mix(in oklch, var(--ring) 45%, transparent);
  transform: translateX(2px);
}
.post-row-title { font-size: 0.92rem; font-weight: 800; color: var(--fg); margin-bottom: 0.4rem; line-height: 1.35; letter-spacing: -0.01em; }
.post-row-excerpt { font-size: 0.78rem; color: var(--fg-muted); line-height: 1.65; margin-bottom: 0.6rem; }
.post-row-date { font-size: 0.68rem; color: var(--fg-muted); font-family: 'JetBrains Mono', monospace; }
.post-row-arrow { font-size: 0.75rem; color: var(--ring); font-weight: 700; white-space: nowrap; }

/* ── Category badge ── */
.badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: 6px; padding: 0.18rem 0.5rem;
  border: 1px solid;
}
.badge-tutorial  { color: var(--ring); background: color-mix(in oklch, var(--ring) 12%, transparent); border-color: color-mix(in oklch, var(--ring) 22%, transparent); }
.badge-comparison{ color: oklch(0.75 0.2 270); background: color-mix(in oklch, oklch(0.7 0.2 270) 12%, transparent); border-color: color-mix(in oklch, oklch(0.7 0.2 270) 22%, transparent); }
.badge-use-case  { color: oklch(0.72 0.18 160); background: color-mix(in oklch, oklch(0.75 0.18 160) 12%, transparent); border-color: color-mix(in oklch, oklch(0.75 0.18 160) 22%, transparent); }

/* ── Post header ── */
.post-meta { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 1rem; }
.post-meta-dot { color: var(--border); font-size: 0.6rem; }
.post-meta-item { font-size: 0.7rem; color: var(--fg-muted); font-family: 'JetBrains Mono', monospace; }
.post-title {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  font-weight: 900; letter-spacing: -0.03em;
  color: var(--fg); line-height: 1.2; margin-bottom: 0.9rem;
}
.post-excerpt { font-size: 1rem; color: var(--fg-muted); line-height: 1.65; margin-bottom: 2.5rem; }
.post-cover {
  width: 100%; max-height: 400px; object-fit: cover;
  border-radius: 14px; border: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

/* ── Post body ── */
.post-body { font-size: 0.93rem; line-height: 1.85; color: var(--fg-muted); }
.post-body h2 { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; color: var(--fg); margin: 2rem 0 0.75rem; line-height: 1.3; }
.post-body h3 { font-size: 1.05rem; font-weight: 800; letter-spacing: -0.01em; color: var(--fg); margin: 1.75rem 0 0.6rem; }
.post-body h4 { font-size: 0.9rem; font-weight: 700; color: var(--fg); margin: 1.5rem 0 0.5rem; }
.post-body p  { margin: 0 0 1rem; }
.post-body strong { color: var(--fg); font-weight: 700; }
.post-body em { font-style: italic; }
.post-body a  { color: var(--ring); text-decoration: underline; text-underline-offset: 3px; }
.post-body a:hover { opacity: 0.8; }
.post-body ul, .post-body ol { padding-left: 1.4rem; margin: 1rem 0; display: flex; flex-direction: column; gap: 0.3rem; }
.post-body li { margin-bottom: 0.1rem; }
.post-body hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }
.post-body blockquote {
  border-left: 3px solid var(--ring); padding-left: 1.25rem;
  margin: 1.25rem 0; color: var(--fg-muted); font-style: italic;
}
.post-body code {
  font-family: 'JetBrains Mono', monospace; font-size: 0.82em;
  background: color-mix(in oklch, var(--ring) 10%, transparent);
  color: var(--ring); padding: 0.1em 0.4em; border-radius: 4px;
}
.post-body pre {
  background: color-mix(in oklch, var(--ring) 6%, #050505);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 1.25rem 1.5rem; overflow-x: auto; margin: 1.5rem 0;
}
.post-body pre code {
  background: none; color: var(--fg);
  font-size: 0.8rem; line-height: 1.7; padding: 0; border-radius: 0;
}
.post-body table {
  width: 100%; border-collapse: collapse;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
  margin: 1.5rem 0; font-size: 0.82rem;
}
.post-body th {
  text-align: left; padding: 0.5rem 0.75rem;
  font-size: 0.65rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ring);
  font-weight: 700; border-bottom: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
}
.post-body td { padding: 0.55rem 0.75rem; border-bottom: 1px solid color-mix(in oklch, var(--border) 50%, transparent); }
.post-body tr:last-child td { border-bottom: none; }

/* ── Post footer nav ── */
.post-footer-nav {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
  border-top: 1px solid var(--border); margin-top: 3rem; padding-top: 1.5rem;
}
.post-footer-nav a.back { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--ring); font-weight: 600; }
.post-footer-nav a.cta {
  font-size: 0.8rem; font-weight: 700;
  color: #000; background: var(--ring);
  padding: 0.5rem 1.1rem; border-radius: 8px;
}
.post-footer-nav a.cta:hover { opacity: 0.88; }

@media (max-width: 600px) {
  .blog-nav a:not(.btn-cta) { display: none; }
  .section-header { flex-direction: column; align-items: flex-start; }
}