:root{
  --bg:#0f1720;
  --card:#0b1220;
  --muted:#99a0ab;
  --accent:#2dd4bf;
  --text:#e6eef6;
  --max-width:1100px;
  --radius:10px;
  --gap:20px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,#071025 0%, #071525 60%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}

.container{
  width:clamp(300px,90%,var(--max-width));
  margin:0 auto;
  padding:24px;
}

/* Skip link */
.skip-link{
  position: absolute;
  left:-999px;
  top:auto;
  background:#fff;
  color:#000;
  padding:8px 12px;
  z-index:100;
}
.skip-link:focus{left:12px;top:12px;border-radius:6px}

/* Header */
.site-header{border-bottom:1px solid rgba(255,255,255,0.04);background:transparent}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0}
.brand h1{margin:0;font-size:1.1rem}
.brand .name{font-weight:600;margin-left:6px}
.subtitle{margin:6px 0 0;color:var(--muted);font-size:0.9rem}

/* Nav */
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:12px}
.site-nav a{color:var(--text);text-decoration:none;padding:8px;border-radius:6px}
.site-nav a:hover{background:rgba(255,255,255,0.03)}

.nav-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--text);padding:8px 10px;border-radius:8px}

/* Hero */
.hero{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start;margin-top:18px}
.hero-left h2{margin:0 0 12px;font-size:1.6rem}
.hero-left p{color:var(--muted)}
.cta{margin-top:14px;display:flex;gap:10px}
.btn{background:var(--accent);color:#042024;padding:10px 14px;border-radius:8px;text-decoration:none;font-weight:600}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--text)}

/* Cards/sections */
.section{margin-top:26px;padding:20px;background:rgba(255,255,255,0.02);border-radius:var(--radius)}
.card h2{margin-top:0}

/* Architecture grid */
.architecture-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
.stack{padding-left:18px}

/* Case study cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:12px}
.case{background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.015));padding:14px;border-radius:8px}
.case .index{display:inline-block;background:rgba(255,255,255,0.04);padding:6px 8px;border-radius:6px;margin-bottom:8px}
.read-link{display:inline-block;margin-top:10px;color:var(--accent)}

/* Skills grid */
.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:12px;color:var(--muted);font-size:0.95rem}

/* Footer */
.site-footer{margin-top:34px;padding:18px 0;border-top:1px solid rgba(255,255,255,0.04);text-align:center;color:var(--muted)}

/* Utilities */
.outcome{color:var(--muted);font-size:0.95rem}
.location-list{list-style:none;padding:0;margin:12px 0 0;color:var(--muted)}
.stats{list-style:none;padding:0;margin:8px 0;color:var(--text)}

/* Responsive */
@media (max-width:920px){
  .hero{grid-template-columns:1fr;gap:18px}
  .architecture-grid{grid-template-columns:1fr;align-items:start}
  .hero-right{order:2}
  .nav-toggle{display:inline-block}
  .site-nav{position:absolute;right:24px;top:70px;background:var(--card);padding:12px;border-radius:10px;display:none;box-shadow:0 8px 30px rgba(2,6,23,0.6)}
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column}
}

/* README / Portfolio section styles */
.readme-section{
  margin-top:26px;
  padding:20px;
  background:rgba(255,255,255,0.015);
  border-radius:var(--radius);
  color:var(--muted);
}
.readme-section h2,
.readme-section h3{color:var(--text);margin-top:0}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 14px}
.badges img{height:26px;border-radius:6px;display:inline-block}
.repo-structure, .diagram, .readme-section pre{
  background:linear-gradient(180deg, rgba(2,6,23,0.5), rgba(2,6,23,0.35));
  padding:12px;
  border-radius:8px;
  overflow:auto;
  color:var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono", "Courier New", monospace;
  font-size:0.92rem;
  line-height:1.45;
  margin:12px 0;
}
.readme-section p{margin:8px 0}
@media (max-width:920px){
  .badges img{height:22px}
  .readme-section{padding:16px}
}