/* ============================================================
   post.css — Individual blog post page
   ============================================================ */

/* ── Hero ── */
.post-hero {
  padding: 7rem 3rem 4rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg); position: relative; overflow: hidden;
}
.post-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,200,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.035) 1px, transparent 1px);
  background-size: 55px 55px;
  mask-image: radial-gradient(ellipse 70% 80% at 15% 50%, black 10%, transparent 65%);
}
.post-hero-inner {
  max-width: 820px; margin: 0 auto; position: relative; z-index: 1;
}

/* tags */
.post-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.75rem; }
.post-tag {
  font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.25rem 0.75rem; border: 1px solid;
}
.post-tag.blue   { color: var(--blue);   border-color: var(--border-b); background: var(--blue-dim); }
.post-tag.yellow { color: var(--yellow); border-color: var(--border-y); background: var(--yellow-dim); }
.post-tag.muted  { color: var(--fg-muted); border-color: var(--border); background: none; }

/* headline */
.post-headline {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 1.04; letter-spacing: 0.03em;
  color: var(--fg); margin-bottom: 1.5rem;
}
.post-headline .hb { color: var(--blue); text-shadow: 0 0 35px rgba(0,200,255,0.3); }
.post-headline .hy { color: var(--yellow); text-shadow: 0 0 35px rgba(255,230,0,0.3); }

/* lead */
.post-lead {
  font-size: 0.9rem; line-height: 1.9;
  color: var(--fg-muted); max-width: 68ch; margin-bottom: 2rem;
}

/* meta bar */
.post-meta {
  display: flex; align-items: center; gap: 0.85rem;
  padding-top: 1.5rem; border-top: 1px solid var(--border);
  font-size: 0.68rem; letter-spacing: 0.1em; color: var(--fg-muted);
  flex-wrap: wrap;
}
.post-meta-sep { color: var(--yellow); font-size: 0.4rem; }
.post-back {
  margin-left: auto; color: var(--blue); text-decoration: none;
  font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  transition: color 0.2s;
}
.post-back:hover { color: var(--yellow); }

/* ── Article body ── */
.post-body {
  max-width: 820px; margin: 0 auto;
  padding: 3.5rem 3rem 6rem;
  border-left: 1px solid var(--border);
}

/* headings */
.post-body h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: 0.04em; color: var(--fg);
  margin: 3.5rem 0 1.2rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}
.post-body h2 .hb { color: var(--blue); }
.post-body h2 .hy { color: var(--yellow); }

.post-body h3 {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--blue); margin: 2.5rem 0 0.75rem;
}

/* paragraphs */
.post-body p {
  margin-bottom: 1.2rem; color: var(--fg-muted);
  font-size: 0.88rem; line-height: 1.95;
}
.post-body p:last-child { margin-bottom: 0; }
.post-body p strong { color: var(--fg); font-weight: 500; }
.post-body a { color: var(--blue); text-decoration: none; }
.post-body a:hover { text-decoration: underline; color: var(--yellow); }

/* inline code */
.post-body code {
  font-family: 'DM Mono', monospace;
  font-size: 0.82em; color: var(--blue);
  background: var(--blue-dim); border: 1px solid rgba(0,200,255,0.15);
  padding: 1px 6px; white-space: nowrap;
}

/* blockquote */
.post-body blockquote {
  font-family: 'Instrument Serif', serif; font-style: italic;
  font-size: 1.1rem; line-height: 1.75; color: var(--fg-muted);
  border-left: 2px solid var(--yellow); padding: 0 1.5rem;
  margin: 2.5rem 0;
}

/* callouts */
.callout {
  background: var(--bg2); border: 1px solid var(--border);
  border-left: 2px solid var(--blue);
  padding: 1.25rem 1.5rem; margin: 2rem 0;
}
.callout.warn   { border-left-color: var(--yellow); }
.callout.danger { border-left-color: #ff4d4d; background: rgba(255,77,77,0.04); }
.callout.ok     { border-left-color: #00e5a0; background: rgba(0,229,160,0.04); }

.callout-label {
  font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 0.5rem;
}
.callout.warn   .callout-label { color: var(--yellow); }
.callout.danger .callout-label { color: #ff4d4d; }
.callout.ok     .callout-label { color: #00e5a0; }

.callout p {
  font-size: 0.82rem !important;
  margin: 0 !important; color: var(--fg-muted);
}
.callout ul {
  font-size: 0.82rem; color: var(--fg-muted);
  padding-left: 1.2rem; margin: 0.5rem 0 0;
}
.callout li { margin-bottom: 0.4rem; line-height: 1.7; }

/* code blocks */
.code-block {
  background: #06060a; border: 1px solid var(--border);
  margin: 1.75rem 0; overflow: hidden;
}
.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.5rem 1rem; border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.code-lang {
  font-size: 0.58rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fg-muted);
}
.code-file { font-size: 0.68rem; color: var(--blue); }
pre {
  padding: 1.25rem 1.5rem; overflow-x: auto;
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem; line-height: 1.85; color: #8fa3b1;
}
pre .k { color: #a78bfa; }
pre .s { color: var(--blue); }
pre .c { color: #3d4a56; font-style: italic; }
pre .n { color: var(--yellow); }
pre .v { color: #00e5a0; }

/* compare table */
.compare-table {
  width: 100%; border-collapse: collapse;
  margin: 2rem 0; font-size: 0.8rem;
}
.compare-table th {
  background: var(--bg3); color: var(--fg-muted);
  font-weight: 500; font-size: 0.62rem; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 0.75rem 1rem;
  text-align: left; border-bottom: 1px solid var(--border-b);
}
.compare-table td {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--border);
  color: var(--fg-muted); vertical-align: top; line-height: 1.6;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: rgba(255,255,255,0.015); }
.compare-table .lc { color: var(--fg); font-size: 0.75rem; }
.compare-table .good { color: #00e5a0; }
.compare-table .bad  { color: #ff4d4d; }

/* diagrams */
.diagram-wrap {
  background: var(--bg2); border: 1px solid var(--border);
  padding: 1.5rem 1rem 1rem; margin: 2.5rem 0; overflow: hidden;
}
.arch-svg { width: 100%; height: auto; font-family: 'DM Mono', monospace; }
.diagram-caption {
  text-align: center; font-size: 0.65rem; letter-spacing: 0.06em;
  color: var(--fg-muted); margin-top: 0.75rem;
  border-top: 1px solid var(--border); padding-top: 0.75rem;
}

/* ── Post nav strip ── */
.post-nav-strip {
  max-width: 820px; margin: 0 auto;
  padding: 2rem 3rem;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
}
.post-nav-back {
  font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--fg-muted); text-decoration: none; transition: color 0.2s;
}
.post-nav-back:hover { color: var(--blue); }
.post-nav-cta {
  font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--bg); background: var(--yellow); font-weight: 500;
  padding: 0.7rem 1.5rem; text-decoration: none;
  transition: box-shadow 0.2s;
}
.post-nav-cta:hover { box-shadow: 0 0 22px var(--yellow-glow); }

/* ── Footer ── */
.post-footer {
  border-top: 1px solid var(--border); padding: 2.25rem 3rem;
  display: flex; align-items: center; justify-content: space-between;
}
.footer-logo { font-family: 'Bebas Neue', sans-serif; font-size: 1.3rem; letter-spacing: 0.1em; color: var(--blue); text-shadow: 0 0 16px var(--blue-glow); }
.footer-copy { font-size: 0.65rem; letter-spacing: 0.1em; color: var(--fg-muted); }
.footer-loc  { font-size: 0.65rem; letter-spacing: 0.1em; color: var(--fg-muted); display: flex; align-items: center; gap: 0.4rem; }
.footer-loc svg { width: 0.75rem; height: 0.75rem; fill: none; stroke: var(--yellow); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ── Responsive ── */
@media (max-width: 960px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .post-hero  { padding: 5.5rem 1.5rem 3rem; }
  .post-body  { padding: 2.5rem 1.5rem 5rem; border-left: none; }
  .post-nav-strip { padding: 1.5rem; }
  .post-footer { flex-direction: column; gap: 1rem; text-align: center; }
  .post-footer .footer-loc { justify-content: center; }
  .post-back  { margin-left: 0; margin-top: 0.5rem; width: 100%; }
  pre { font-size: 0.68rem; }
  .compare-table { font-size: 0.72rem; }
  .compare-table th,
  .compare-table td { padding: 0.6rem 0.75rem; }
}