:root{--primary:#0f172a;--secondary:#2563eb;--muted:#64748b;--bg:#f8fafc;--card-bg:#fff;--skill-bg:#e0e7ff;--skill-text:#1e3a8a;--accent-ai:linear-gradient(135deg,#2563eb,#38bdf8);--accent-infra:linear-gradient(135deg,#0f172a,#334155)}[data-theme=dark]{--primary:#e5e7eb;--secondary:#60a5fa;--muted:#94a3b8;--bg:#020617;--card-bg:#020617;--skill-bg:#1e293b;--skill-text:#93c5fd;--accent-ai:linear-gradient(135deg,#38bdf8,#0ea5e9);--accent-infra:linear-gradient(135deg,#020617,#1e293b)}*{box-sizing:border-box;transition:background-color .3s ease,color .3s ease}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--primary);line-height:1.6}.theme-toggle{position:fixed;top:20px;right:20px;background:var(--card-bg);border:1px solid var(--muted);border-radius:999px;padding:6px 14px;cursor:pointer;font-size:14px;color:var(--primary)}.container{max-width:1100px;margin:auto;padding:40px 20px}header{text-align:center;margin-bottom:60px}h1{margin:0;font-size:36px}h2{font-size:22px;margin-bottom:10px}h3{margin-bottom:6px}.tagline{color:var(--secondary);font-weight:600;margin-bottom:12px}section{margin-bottom:50px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}.card{background:var(--card-bg);border-radius:14px;padding:24px;box-shadow:0 10px 30px rgba(0,0,0,.06)}.highlight-ai{background:var(--accent-ai);color:#fff}.highlight-infra{background:var(--accent-infra);color:#fff}.skills span{display:inline-block;background:var(--skill-bg);color:var(--skill-text);padding:6px 12px;border-radius:999px;margin:6px 6px 0 0;font-size:14px}footer{text-align:center;color:var(--muted);font-size:14px;margin-top:60px}@media(max-width:768px){header{text-align:center}}