:root{
  --ink:#0B0F14;
  --surface:#121922;
  --surface-2:#182028;
  --border:#232D38;
  --text:#E7EDF2;
  --text-dim:#8B9AA7;
  --signal:#4FD1A5;
  --signal-dim:#2E5A4C;
  --amber:#E8A33D;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px;}

/* ---------- Nav ---------- */
.site-nav{
  border-bottom:1px solid var(--border);
  background:var(--ink);
  position:sticky; top:0; z-index:50;
}
.site-nav .wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px;
}
.site-nav .logo{
  font-family:var(--font-mono); font-weight:500; font-size:14px; color:var(--text);
  display:flex; align-items:center; gap:8px;
}
.site-nav .logo .dot{ width:7px;height:7px;border-radius:50%; background:var(--signal); }
.site-nav .links{ display:flex; gap:24px; }
.site-nav .links a{ font-size:14px; color:var(--text-dim); }
.site-nav .links a:hover, .site-nav .links a.active{ color:var(--text); }
.nav-toggle{ display:none; background:none; border:none; color:var(--text); font-size:22px; cursor:pointer; }
@media (max-width:680px){
  .site-nav .links{
    position:absolute; top:100%; left:0; right:0;
    background:var(--surface); border-bottom:1px solid var(--border);
    flex-direction:column; padding:16px 24px; gap:14px;
    display:none;
  }
  .site-nav .links.open{ display:flex; }
  .nav-toggle{ display:block; }
}

/* ---------- Status bar ---------- */
.statusbar{
  border-bottom:1px solid var(--border);
  background:var(--surface);
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-dim);
}
.statusbar .wrap{
  display:flex; align-items:center; gap:10px;
  padding-top:10px; padding-bottom:10px; flex-wrap:wrap;
}
.dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 3px var(--signal-dim);
  flex-shrink:0;
}
@media (prefers-reduced-motion: no-preference){
  .dot{ animation: pulse 2.4s ease-in-out infinite; }
  @keyframes pulse{
    0%,100%{ box-shadow:0 0 0 3px var(--signal-dim); }
    50%{ box-shadow:0 0 0 5px var(--signal-dim); }
  }
}
.statusbar .sep{ color:var(--border); }
.statusbar strong{ color:var(--text); font-weight:500; }

/* ---------- Hero ---------- */
header.hero{ padding:72px 0 56px; border-bottom:1px solid var(--border); }
.eyebrow{
  font-family:var(--font-mono); font-size:13px; color:var(--signal);
  margin-bottom:20px; display:flex; align-items:center; gap:8px;
}
.eyebrow::before{ content:"$"; color:var(--text-dim); }
h1{
  font-family:var(--font-display); font-weight:700;
  font-size:clamp(32px, 5vw, 52px); line-height:1.12; letter-spacing:-0.01em;
  max-width:16ch; margin-bottom:20px;
}
h1 .accent{ color:var(--amber); }
.hero p.sub{ font-size:17px; color:var(--text-dim); max-width:52ch; margin-bottom:32px; }
.hero-ctas{ display:flex; gap:12px; flex-wrap:wrap; margin-bottom:40px; }
.btn{
  font-family:var(--font-body); font-weight:600; font-size:14.5px;
  padding:12px 20px; border-radius:6px; display:inline-flex;
  align-items:center; gap:8px; transition:transform .15s ease, border-color .15s ease;
  cursor:pointer; border:none;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--amber); color:#151109; }
.btn-secondary{ border:1px solid var(--border); color:var(--text); background:transparent; }
.btn-secondary:hover{ border-color:var(--text-dim); }

.cred{ display:flex; flex-wrap:wrap; gap:10px; }
.cred span{
  font-family:var(--font-mono); font-size:12px; color:var(--text-dim);
  background:var(--surface); border:1px solid var(--border);
  padding:6px 12px; border-radius:20px;
}
.cred span b{ color:var(--text); font-weight:500; }

/* ---------- Page hero (simpler, for About/Contact/Projects/Blog) ---------- */
.page-hero{ padding:56px 0 40px; border-bottom:1px solid var(--border); }
.page-hero h1{ font-size:clamp(28px,4vw,40px); max-width:none; }
.page-hero p.sub{ margin-bottom:0; }

/* ---------- Section shell ---------- */
section{ padding:64px 0; border-bottom:1px solid var(--border); }
.section-head{ margin-bottom:32px; }
.section-head .label{
  font-family:var(--font-mono); font-size:12px; color:var(--signal);
  text-transform:uppercase; letter-spacing:.08em; margin-bottom:8px; display:block;
}
.section-head h2{ font-family:var(--font-display); font-size:26px; font-weight:600; }
.section-head p{ color:var(--text-dim); font-size:15px; margin-top:8px; max-width:56ch; }

/* ---------- Flagship card ---------- */
.flagship{
  background:linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  border:1px solid var(--border); border-radius:12px; padding:36px;
  position:relative; overflow:hidden;
}
.flagship::before{ content:""; position:absolute; top:0; left:0; right:0; height:2px; background:var(--amber); }
.flagship-top{ display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:16px; margin-bottom:16px; }
.tag-flagship{
  font-family:var(--font-mono); font-size:11px; color:var(--amber);
  border:1px solid var(--amber); padding:3px 9px; border-radius:20px; letter-spacing:.05em;
}
.flagship h3{ font-family:var(--font-display); font-size:24px; margin-bottom:10px; }
.flagship p{ color:var(--text-dim); font-size:15px; max-width:60ch; margin-bottom:20px; }
.dialects{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:24px; }
.dialects span{
  font-family:var(--font-mono); font-size:11.5px; color:var(--text-dim);
  background:var(--ink); border:1px solid var(--border); padding:4px 10px; border-radius:4px;
}
.flagship-links{ display:flex; gap:20px; flex-wrap:wrap; }
.flagship-links a{ font-size:14px; font-weight:600; color:var(--signal); display:inline-flex; align-items:center; gap:6px; }
.flagship-links a:hover{ text-decoration:underline; }

/* ---------- Card grid (projects) ---------- */
.grid{ display:grid; grid-template-columns:repeat(auto-fit, minmax(240px, 1fr)); gap:16px; }
.card{
  background:var(--surface); border:1px solid var(--border); border-radius:10px;
  padding:22px; display:flex; flex-direction:column;
}
.card-top{ display:flex; align-items:center; gap:8px; margin-bottom:12px; }
.card-top .dot{ background:var(--signal); }
.card-top span.lang{ margin-left:auto; font-family:var(--font-mono); font-size:11px; color:var(--text-dim); }
.card h4{ font-family:var(--font-display); font-size:17px; margin-bottom:8px; }
.card p{ color:var(--text-dim); font-size:14px; flex-grow:1; margin-bottom:16px; }
.card a.repo-link{ font-family:var(--font-mono); font-size:12.5px; color:var(--signal); display:inline-flex; align-items:center; gap:6px; }
.card a.repo-link:hover{ text-decoration:underline; }

/* ---------- Pillars ---------- */
.pillars{ display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:14px; }
.pillar{
  border:1px solid var(--border); border-radius:10px; padding:20px;
  transition:border-color .15s ease, background .15s ease; cursor:pointer; background:none;
  text-align:left; font-family:inherit; color:inherit;
}
.pillar:hover, .pillar.active{ border-color:var(--signal-dim); background:var(--surface); }
.pillar .num{ font-family:var(--font-mono); font-size:11px; color:var(--text-dim); margin-bottom:10px; display:block; }
.pillar h4{ font-family:var(--font-display); font-size:16px; margin-bottom:6px; }
.pillar p{ font-size:13px; color:var(--text-dim); }

/* ---------- YouTube ---------- */
.yt-card{
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  padding:32px; display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:20px;
}
.yt-card .yt-left{ display:flex; align-items:center; gap:16px; }
.yt-icon{
  width:48px; height:48px; border-radius:10px; background:#FF0000;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.yt-icon svg{ width:22px; height:22px; }
.yt-card h4{ font-family:var(--font-display); font-size:18px; margin-bottom:4px; }
.yt-card p{ color:var(--text-dim); font-size:14px; }
.video-embed{
  position:relative; padding-bottom:56.25%; height:0; overflow:hidden;
  border-radius:10px; border:1px solid var(--border); margin-top:24px;
}
.video-embed iframe{ position:absolute; top:0; left:0; width:100%; height:100%; border:0; }

/* ---------- Blog listing ---------- */
.filter-bar{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:32px; }
.filter-btn{
  font-family:var(--font-mono); font-size:12px; color:var(--text-dim);
  background:var(--surface); border:1px solid var(--border);
  padding:7px 14px; border-radius:20px; cursor:pointer;
}
.filter-btn:hover{ color:var(--text); }
.filter-btn.active{ color:var(--ink); background:var(--signal); border-color:var(--signal); }
.post-list{ display:flex; flex-direction:column; gap:1px; background:var(--border); border:1px solid var(--border); border-radius:10px; overflow:hidden; }
.post-row{ background:var(--ink); padding:20px 24px; display:flex; justify-content:space-between; gap:20px; align-items:baseline; flex-wrap:wrap; }
.post-row:hover{ background:var(--surface); }
.post-row .post-title{ font-family:var(--font-display); font-size:16px; }
.post-row .post-date{ font-family:var(--font-mono); font-size:12px; color:var(--text-dim); white-space:nowrap; }
.post-row.hidden{ display:none; }

/* ---------- Prose (posts, about, contact) ---------- */
.prose{ max-width:70ch; }
.prose h2{ font-family:var(--font-display); font-size:22px; margin:32px 0 12px; }
.prose h3{ font-family:var(--font-display); font-size:18px; margin:24px 0 10px; }
.prose p{ margin-bottom:16px; color:var(--text-dim); font-size:15.5px; }
.prose a{ color:var(--signal); text-decoration:underline; }
.prose code{ font-family:var(--font-mono); font-size:13px; background:var(--surface); padding:2px 6px; border-radius:4px; }
.prose pre{ background:var(--surface); border:1px solid var(--border); padding:16px; border-radius:8px; overflow-x:auto; margin-bottom:16px; }
.prose pre code{ background:none; padding:0; }
.prose ul, .prose ol{ margin:0 0 16px 20px; color:var(--text-dim); }
.prose blockquote{ border-left:2px solid var(--signal); padding-left:16px; color:var(--text-dim); font-style:italic; margin-bottom:16px; }
.post-meta{ font-family:var(--font-mono); font-size:12.5px; color:var(--text-dim); margin-bottom:32px; }

/* ---------- Footer ---------- */
footer.site-footer{ padding:40px 0; }
footer.site-footer .wrap{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px; }
footer.site-footer .brand{ font-family:var(--font-mono); font-size:13px; color:var(--text-dim); }
footer.site-footer .links{ display:flex; gap:20px; }
footer.site-footer .links a{ font-size:13.5px; color:var(--text-dim); }
footer.site-footer .links a:hover{ color:var(--text); }

@media (max-width:600px){
  header.hero{ padding:48px 0 40px; }
  section{ padding:48px 0; }
  .flagship{ padding:24px; }
  .yt-card{ padding:24px; }
}

/* ---------- Lightbox (click-to-zoom post images) ---------- */
.prose img{ cursor:zoom-in; }
.lightbox{
  position:fixed; z-index:9999; top:0; left:0; width:100%; height:100%;
  background:rgba(0,0,0,0.9);
  display:flex; justify-content:center; align-items:center;
  opacity:0; pointer-events:none; transform:scale(1.05);
  transition:opacity 0.35s ease, transform 0.35s ease;
}
.lightbox.visible{ opacity:1; pointer-events:auto; transform:scale(1); }
.lightbox img{
  max-width:90%; max-height:90%; border-radius:12px;
  box-shadow:0 0 25px rgba(255,255,255,0.2);
  opacity:0; transform:scale(0.95);
  transition:opacity 0.3s ease, transform 0.3s ease;
}
.lightbox.visible img{ opacity:1; transform:scale(1); cursor:zoom-out; }