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

:root {
  --surface: #131313;
  --surface-container: #201f1f;
  --surface-container-low: #1c1b1b;
  --surface-container-high: #2a2a2a;
  --primary-terminal: #00ffc2;
  --accent-amber: #ffb347;
  --on-surface: #e5e2e1;
  --on-surface-variant: #b9cbc1;
  --text-muted: #9aa79f;
  --text-faint: #7c8a82;
  --outline-variant: #3a4a43;
  --font-headline: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-label: "Space Grotesk", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

::selection { background: rgba(0, 255, 194, 0.3); color: var(--primary-terminal); }

body {
  background: var(--surface); color: var(--on-surface);
  font-family: var(--font-body); line-height: 1.5;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
img { display: block; max-width: 100%; }

.page { min-height: 100vh; display: flex; flex-direction: column; }

.icon { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ── Nav ── */
nav {
  position: fixed; top: 0; width: 100%; z-index: 50;
  background: rgba(19,19,19,0.8);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(0,255,194,0.1);
}
.nav-inner {
  max-width: 1440px; margin: 0 auto; padding: 1.5rem 2rem;
  display: flex; justify-content: space-between; align-items: center;
}
.logo {
  font-family: var(--font-headline); font-size: 1.5rem; font-weight: 500;
  color: var(--primary-terminal); letter-spacing: -0.05em;
  text-shadow: 0 0 8px rgba(0,255,194,0.25);
}
.logo a { color: inherit; }
.nav-links {
  display: flex; align-items: center; gap: 3rem;
  font-family: var(--font-label); text-transform: uppercase;
  letter-spacing: 0.15em; font-size: 0.875rem;
}
.nav-links a { color: var(--text-muted); transition: color 0.3s; }
.nav-links a:hover { color: var(--primary-terminal); }
.nav-links a.active { color: var(--primary-terminal); position: relative; }
.nav-links a.active::after {
  content: ''; position: absolute; left: 0; bottom: -4px;
  width: 100%; height: 2px; background: var(--primary-terminal);
}
.nav-search { color: var(--primary-terminal); transition: opacity 0.2s; }
.nav-search:hover { opacity: 0.7; }

/* ── Main ── */
main { padding: 8rem 2rem 6rem; margin: 0 auto; flex-grow: 1; width: 100%; }
.home-main { max-width: 1440px; }
.post-main { max-width: 100%; }
.about-main { max-width: 720px; padding-top: 10rem; }

/* ── Hero ── */
.hero { max-width: 46rem; margin-bottom: 4rem; animation: fadeUp 0.6s ease-out both; }
.hero-status {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-label); font-size: 0.8rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.5rem;
}
.hero-status .dot {
  width: 8px; height: 8px; background: var(--primary-terminal);
  border-radius: 50%; animation: pulse 2s infinite;
}
.hero h1 {
  font-family: var(--font-headline); font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 600; letter-spacing: -0.04em; line-height: 1; color: #fff;
  margin-bottom: 1.25rem;
}
.hero-desc { color: var(--on-surface-variant); font-size: 1.125rem; line-height: 1.7; max-width: 34rem; }
.hero-cta { display: flex; align-items: center; flex-wrap: wrap; gap: 1.75rem; margin-top: 2rem; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.6rem;
  background: var(--primary-terminal); color: var(--surface);
  font-family: var(--font-label); font-size: 0.8rem; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  padding: 0.9rem 1.75rem; transition: box-shadow 0.3s, transform 0.2s;
}
.btn-primary:hover { box-shadow: 0 0 28px rgba(0,255,194,0.35); transform: translateY(-1px); }
.btn-primary .arrow { transition: transform 0.2s; }
.btn-primary:hover .arrow { transform: translateX(4px); }
.link-secondary {
  font-family: var(--font-label); font-size: 0.8rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted);
  transition: color 0.2s;
}
.link-secondary:hover { color: var(--primary-terminal); }

/* ── Section head ── */
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; margin-bottom: 2.5rem; padding-bottom: 1rem;
  border-bottom: 1px solid rgba(58,74,67,0.15);
}
.section-label {
  font-family: var(--font-label); font-size: 0.75rem; font-weight: 700;
  color: var(--primary-terminal); letter-spacing: 0.3em; text-transform: uppercase;
}
.section-meta {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  letter-spacing: 0.15em; text-transform: uppercase; font-variant-numeric: tabular-nums;
}

/* ── Grid ── */
.grid { display: grid; grid-template-columns: 1fr; gap: 5rem 3rem; }

/* ── Featured (latest post) ── */
.featured { display: block; cursor: pointer; animation: fadeIn 0.6s 0.2s ease-out both; }
.featured-accent {
  position: relative; aspect-ratio: 1; width: 100%; max-width: 180px;
  overflow: hidden; flex-shrink: 0;
  background: var(--surface-container-low); margin-bottom: 1.5rem;
  border: 1px solid rgba(0,255,194,0.12);
}
.gen-pattern {
  width: 100%; height: 100%; position: relative;
  background:
    linear-gradient(rgba(0,255,194,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,194,0.03) 1px, transparent 1px),
    linear-gradient(rgba(0,255,194,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,194,0.06) 1px, transparent 1px);
  background-size: 16px 16px, 16px 16px, 80px 80px, 80px 80px;
  transition: all 0.7s;
}
.gen-pattern::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 40% 60% at 25% 40%, rgba(0,255,194,0.08), transparent),
    radial-gradient(ellipse 30% 50% at 75% 65%, rgba(0,255,194,0.05), transparent),
    radial-gradient(ellipse 20% 30% at 60% 20%, rgba(0,255,194,0.03), transparent);
  transition: all 0.7s;
}
.featured:hover .gen-pattern::after {
  background:
    radial-gradient(ellipse 45% 65% at 25% 40%, rgba(0,255,194,0.15), transparent),
    radial-gradient(ellipse 35% 55% at 75% 65%, rgba(0,255,194,0.1), transparent),
    radial-gradient(ellipse 25% 35% at 60% 20%, rgba(0,255,194,0.06), transparent);
}
.gen-dots { position: absolute; inset: 0; }
.gen-dot { position: absolute; width: 4px; height: 4px; border-radius: 50%; background: var(--primary-terminal); }
.gen-dot:nth-child(1) { top: 20%; left: 15%; opacity: 0.4; animation: dotPulse 3s 0s infinite; }
.gen-dot:nth-child(2) { top: 45%; left: 38%; opacity: 0.25; animation: dotPulse 4s 1s infinite; }
.gen-dot:nth-child(3) { top: 30%; left: 62%; opacity: 0.35; animation: dotPulse 3.5s 0.5s infinite; }
.gen-dot:nth-child(4) { top: 70%; left: 80%; opacity: 0.2; animation: dotPulse 5s 2s infinite; }
.gen-lines { position: absolute; inset: 0; }
.gen-lines line { stroke: var(--primary-terminal); stroke-width: 0.5; opacity: 0.08; transition: opacity 0.7s; }
.featured:hover .gen-lines line { opacity: 0.15; }
.featured-accent .gradient-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to top, var(--surface), transparent 50%, transparent);
}
.featured-meta { display: flex; flex-direction: column; gap: 1.5rem; align-items: flex-start; }
.featured-date {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  letter-spacing: 0.15em; text-transform: uppercase; font-variant-numeric: tabular-nums;
  flex-shrink: 0; margin-bottom: 0.75rem;
}
.featured-body { flex: 1; min-width: 0; }
.featured h2 {
  font-family: var(--font-headline); font-size: clamp(2.5rem, 4.5vw, 3.5rem);
  font-weight: 600; letter-spacing: -0.035em; line-height: 1.05;
  transition: color 0.3s; margin-bottom: 1.25rem; color: #fff; overflow-wrap: anywhere;
}
.featured:hover h2 { color: var(--primary-terminal); }
.featured .excerpt { color: var(--on-surface-variant); line-height: 1.7; margin-bottom: 1.5rem; max-width: 36rem; }
.featured-bottom { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.tag {
  font-family: var(--font-label); font-size: 10px; letter-spacing: 0.15em;
  color: var(--accent-amber); border: 1px solid rgba(255,179,71,0.3);
  padding: 0.25rem 0.75rem; background: rgba(255,179,71,0.04); text-transform: uppercase;
}
.read-link {
  font-family: var(--font-label); font-size: 10px; color: var(--primary-terminal);
  text-transform: uppercase; letter-spacing: 0.15em;
  display: flex; align-items: center; gap: 0.5rem; transition: gap 0.3s;
}
.featured:hover .read-link { gap: 1rem; }

/* ── Sidebar: recent posts ── */
.sidebar { display: flex; flex-direction: column; animation: fadeRight 0.6s 0.3s ease-out both; }
.sidebar-title {
  font-family: var(--font-label); font-size: 0.75rem; font-weight: 700;
  color: var(--primary-terminal); margin-bottom: 1.5rem;
  letter-spacing: 0.3em; text-transform: uppercase;
}
.recent-list { display: flex; flex-direction: column; gap: 0; flex-grow: 1; }
.recent-item { display: block; padding: 1.25rem 0; border-bottom: 1px solid rgba(58,74,67,0.1); transition: all 0.2s; }
.recent-item:first-child { border-top: 1px solid rgba(58,74,67,0.1); }
.recent-item:hover { padding-left: 0.5rem; }
.recent-item:hover .recent-title { color: var(--primary-terminal); }
.recent-date {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em; font-variant-numeric: tabular-nums;
  margin-bottom: 0.375rem; display: flex; align-items: center; gap: 0.75rem;
}
.recent-date .recent-readtime { color: var(--text-faint); }
.recent-title {
  font-family: var(--font-headline); font-size: 1rem; font-weight: 600;
  color: var(--on-surface); letter-spacing: -0.025em;
  text-transform: uppercase; transition: color 0.2s; line-height: 1.3;
}

/* ── Archive list ── */
.archive-list { display: flex; flex-direction: column; gap: 4px; margin-top: 3rem; }
.archive-entry { background: var(--surface-container-low); transition: background 0.2s; }
.archive-entry a { display: block; }
.archive-entry:hover { background: var(--surface-container); }
.entry-inner {
  padding: 2.5rem 2rem; display: flex; flex-wrap: wrap;
  align-items: center; gap: 2rem; border-bottom: 1px solid rgba(58,74,67,0.05);
}
.entry-date {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  font-variant-numeric: tabular-nums; letter-spacing: 0.15em;
  width: 8rem; flex-shrink: 0; transition: color 0.2s;
}
.archive-entry:hover .entry-date { color: var(--primary-terminal); }
.entry-body { flex-grow: 1; }
.entry-body h3 {
  font-family: var(--font-headline); font-size: 1.125rem; font-weight: 600;
  letter-spacing: 0.02em; margin-bottom: 0.5rem; text-transform: uppercase;
  color: var(--on-surface); transition: transform 0.3s;
}
.archive-entry:hover .entry-body h3 { transform: translateX(0.5rem); }
.entry-info { display: flex; align-items: center; gap: 1rem; }
.entry-info span {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.12em;
}
.entry-info span:first-child { color: var(--accent-amber); }
.entry-dot { width: 4px; height: 4px; background: #374151; border-radius: 50%; }
.entry-chevron { flex-shrink: 0; color: var(--text-faint); transition: color 0.2s, transform 0.2s; }
.archive-entry:hover .entry-chevron { color: var(--primary-terminal); transform: translateX(4px); }

/* ── Post header ── */
.post-header { max-width: 720px; margin: 0 auto 4rem; animation: fadeUp 0.6s ease-out both; }
.post-back {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.15em; margin-bottom: 2rem; transition: color 0.2s;
}
.post-back:hover { color: var(--primary-terminal); }
.post-back svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.post-date {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  letter-spacing: 0.15em; text-transform: uppercase; font-variant-numeric: tabular-nums;
}
.post-meta .dot { width: 4px; height: 4px; background: #374151; border-radius: 50%; }
.post-readtime {
  font-family: var(--font-label); font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
}
.post-header h1 {
  font-family: var(--font-headline); font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700; letter-spacing: -0.04em; line-height: 1; color: #fff; margin-bottom: 1.5rem;
}
.post-tags { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.post-tag {
  font-family: var(--font-label); font-size: 10px; letter-spacing: 0.15em;
  color: var(--text-muted); border: 1px solid rgba(58,74,67,0.3); padding: 0.25rem 0.75rem; text-transform: uppercase;
}

/* ── Post body ── */
.post-body { max-width: 720px; margin: 0 auto; animation: fadeUp 0.6s 0.15s ease-out both; }
.post-body p { color: var(--on-surface-variant); font-size: 1.125rem; line-height: 1.85; margin-bottom: 1.75rem; }
.post-body h2 {
  font-family: var(--font-headline); font-size: 1.75rem; font-weight: 700;
  color: #fff; letter-spacing: -0.025em; margin-top: 3.5rem; margin-bottom: 1.25rem;
}
.post-body h3 {
  font-family: var(--font-headline); font-size: 1.25rem; font-weight: 600;
  color: #fff; letter-spacing: -0.02em; margin-top: 2.5rem; margin-bottom: 1rem;
}
.post-body a { color: var(--primary-terminal); border-bottom: 1px solid rgba(0,255,194,0.3); transition: border-color 0.2s; }
.post-body a:hover { border-color: var(--primary-terminal); }
.post-body strong { color: var(--on-surface); font-weight: 600; }
.post-body em { font-style: italic; }
.post-body ul, .post-body ol { color: var(--on-surface-variant); font-size: 1.125rem; line-height: 1.85; margin-bottom: 1.75rem; padding-left: 1.5rem; }
.post-body li { margin-bottom: 0.5rem; }
.post-body blockquote { border-left: 3px solid var(--primary-terminal); padding: 0.5rem 0 0.5rem 1.5rem; margin: 2rem 0; }
.post-body blockquote p { color: var(--on-surface); font-size: 1.125rem; font-style: italic; margin-bottom: 0; }
.post-body code {
  font-family: var(--font-mono); font-size: 0.9em;
  background: var(--surface-container-high); color: var(--primary-terminal);
  padding: 0.15em 0.4em; border-radius: 3px;
}
.post-body pre {
  background: var(--surface-container); border: 1px solid rgba(58,74,67,0.2);
  padding: 1.5rem; margin: 2rem 0; overflow-x: auto; border-left: 3px solid rgba(0,255,194,0.2);
}
.post-body pre code { background: none; padding: 0; border-radius: 0; color: var(--on-surface); font-size: 0.875rem; line-height: 1.7; }
.post-body figure { margin: 2.5rem 0; }
.post-body figure img { width: 100%; border: 1px solid rgba(58,74,67,0.2); }
.post-body figcaption { font-family: var(--font-label); font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 0.75rem; }
.post-body hr { border: none; border-top: 1px solid rgba(58,74,67,0.2); margin: 3rem 0; }

/* ── Post footer / nav ── */
.post-footer { max-width: 720px; margin: 4rem auto 0; padding-top: 3rem; border-top: 1px solid rgba(58,74,67,0.2); animation: fadeUp 0.6s 0.3s ease-out both; }
.post-nav { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.post-nav-link { display: flex; flex-direction: column; gap: 0.5rem; transition: all 0.2s; max-width: 45%; }
.post-nav-link:hover { transform: translateX(4px); }
.post-nav-link.prev:hover { transform: translateX(-4px); }
.post-nav-label { font-family: var(--font-label); font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.15em; }
.post-nav-title { font-family: var(--font-headline); font-size: 1rem; font-weight: 600; color: var(--on-surface); letter-spacing: -0.025em; transition: color 0.2s; }
.post-nav-link:hover .post-nav-title { color: var(--primary-terminal); }
.post-nav-link.next { text-align: right; margin-left: auto; }

/* ── About ── */
.about-main h1 {
  font-family: var(--font-headline); font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700; letter-spacing: -0.05em; line-height: 0.9; color: #fff; margin-bottom: 3rem;
}
.about-body p { color: var(--on-surface-variant); font-size: 1.125rem; line-height: 1.8; margin-bottom: 1.5rem; }
.about-body a { color: var(--primary-terminal); border-bottom: 1px solid rgba(0,255,194,0.3); transition: border-color 0.2s; }
.about-body a:hover { border-color: var(--primary-terminal); }
.contact { margin-top: 4rem; padding-top: 3rem; border-top: 1px solid rgba(58,74,67,0.2); }
.contact h2 {
  font-family: var(--font-label); font-size: 0.75rem; font-weight: 700;
  color: var(--primary-terminal); letter-spacing: 0.3em; text-transform: uppercase; margin-bottom: 1.5rem;
}
.contact-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.contact-link {
  font-family: var(--font-label); font-size: 0.875rem;
  color: var(--on-surface); border: 1px solid rgba(58,74,67,0.3);
  padding: 0.75rem 1.5rem; transition: all 0.2s; text-transform: uppercase; letter-spacing: 0.05em;
}
.contact-link:hover { background: var(--primary-terminal); color: var(--surface); border-color: var(--primary-terminal); }

/* ── Footer ── */
footer { background: var(--surface); width: 100%; border-top: 1px solid rgba(0,255,194,0.1); padding: 3rem 0; }
.footer-inner {
  max-width: 1440px; margin: 0 auto; padding: 0 2rem;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 2rem;
}
.footer-brand { color: var(--primary-terminal); font-family: var(--font-headline); letter-spacing: -0.05em; font-size: 1.25rem; }
.footer-copy { font-family: var(--font-label); font-size: 10px; color: var(--primary-terminal); opacity: 0.4; letter-spacing: -0.025em; font-variant-numeric: tabular-nums; margin-top: 1rem; }
.footer-links { display: flex; gap: 2rem; font-family: var(--font-label); font-size: 11px; letter-spacing: -0.025em; color: var(--text-muted); text-transform: uppercase; }
.footer-links a { transition: color 0.2s, transform 0.2s; display: inline-block; }
.footer-links a:hover { color: var(--primary-terminal); transform: translateX(4px); }
.footer-avail { text-align: right; font-family: var(--font-label); font-size: 11px; color: var(--text-muted); letter-spacing: -0.025em; line-height: 1.8; }
.footer-avail a { color: var(--primary-terminal); transition: opacity 0.2s; }
.footer-avail a:hover { opacity: 0.7; }

/* ── HUD overlay ── */
.hud { position: fixed; inset: 0; pointer-events: none; z-index: -1; opacity: 0.2; }
.hud-radial { position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(0,255,194,0.05), transparent 70%); }
.hud-vignette { position: absolute; inset: 0; background: linear-gradient(to right, rgba(19,19,19,1) 0%, transparent 5%, transparent 95%, rgba(19,19,19,1) 100%); }

/* ── Animations ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeRight { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes dotPulse { 0%, 100% { opacity: var(--dot-base, 0.3); transform: scale(1); } 50% { opacity: 0.8; transform: scale(2); } }

.archive-entry:nth-child(1) { animation: fadeUp 0.5s 0.5s ease-out both; }
.archive-entry:nth-child(2) { animation: fadeUp 0.5s 0.6s ease-out both; }
.archive-entry:nth-child(3) { animation: fadeUp 0.5s 0.7s ease-out both; }
.archive-entry:nth-child(4) { animation: fadeUp 0.5s 0.8s ease-out both; }

/* ── Responsive ── */
@media (min-width: 768px) {
  .grid { grid-template-columns: repeat(12, 1fr); }
  .featured { grid-column: span 7; }
  .sidebar { grid-column: span 5; }
  .archive-list { grid-column: span 12; }
  .featured-meta { flex-direction: row; gap: 2.5rem; }
}
@media (max-width: 767px) {
  .nav-inner { flex-wrap: wrap; gap: 0.5rem 1.25rem; padding: 1.1rem 1.5rem; }
  .logo { font-size: 1.25rem; }
  .nav-links { order: 3; width: 100%; gap: 1.5rem; font-size: 0.75rem; }
  .entry-inner { flex-direction: column; align-items: flex-start; }
  .entry-date { width: auto; }
  .post-nav { flex-direction: column; }
  .post-nav-link, .post-nav-link.next { max-width: 100%; text-align: left; }
  .footer-avail { text-align: left; }
}