:root{
--bg: #0b0c0e; /* dark default */
--fg: #e6e6e6;
--muted: #9aa0a6;
--card: #121417;
--accent: #6ee7b7;
--ring: rgba(110,231,183,.35);
--shadow: 0 10px 30px rgba(0,0,0,.25);
}

@media (prefers-color-scheme: light){
:root{ --bg:#ffffff; --fg:#0b0c0e; --muted:#57606a; --card:#f6f8fa; --accent:#0ea5e9; --ring:rgba(14,165,233,.35); }
}

html,body{height:100%}
body{
margin:0; font:16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji";
background:var(--bg); color:var(--fg); -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}

/* Header */
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:linear-gradient(to bottom, rgba(0,0,0,.5), transparent);backdrop-filter:saturate(150%) blur(6px)}
.logo{font-weight:700;letter-spacing:.3px;color:var(--fg);text-decoration:none}
.logo .dot{color:var(--accent)}
.nav{display:flex;gap:16px;align-items:center}
.nav a{color:var(--fg);opacity:.8;text-decoration:none}
.nav a:hover{opacity:1}
.theme-toggle{border:1px solid rgba(255,255,255,.12);background:transparent;color:var(--fg);padding:6px 10px;border-radius:10px;cursor:pointer}

/* Hero */
.hero{max-width:1000px;margin:8vh auto 0;padding:0 20px 40px;display:grid;gap:18px}
.hero .eyebrow{color:var(--accent);font-weight:600;letter-spacing:.2em;text-transform:uppercase;font-size:.8rem}
.hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.05;margin:.2em 0}
.hero .sub{color:var(--muted)}
.cta{display:flex;gap:12px;margin-top:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border-radius:12px;background:var(--accent);color:#081017;text-decoration:none;font-weight:600;box-shadow:var(--shadow);transition:transform .18s ease, box-shadow .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid rgba(255,255,255,.15);box-shadow:none}
.btn.small{padding:8px 10px;border-radius:10px;font-weight:600}

.socials{display:flex;gap:10px;margin-top:14px}
.icon{display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.12);border-radius:12px;opacity:.9}
.icon:hover{opacity:1;transform:translateY(-2px)}
.icon svg{width:18px;height:18px;fill:currentColor}

/* Sections */
.section{max-width:1000px;margin:80px auto 0;padding:0 20px}
.section h2{font-size:clamp(1.4rem,3.6vw,2rem);margin:0 0 16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}

/* Card */
.card{background:var(--card);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:18px;box-shadow:var(--shadow);transition:transform .18s ease, box-shadow .18s ease}
.card:hover{transform:translateY(-4px)}
.card header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.card h3{margin:.2em 0;font-size:1.05rem}
.tags{display:flex;gap:8px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.tags li{font-size:.72rem;border:1px solid rgba(255,255,255,.12);padding:4px 8px;border-radius:999px;color:var(--muted)}
.actions{display:flex;gap:8px;margin-top:10px}

.skill-list{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0}
.skill-list li{border:1px solid rgba(255,255,255,.12);padding:6px 10px;border-radius:999px;color:var(--muted)}

/* Footer */
.site-footer{max-width:1000px;margin:80px auto 40px;padding:0 20px;color:var(--muted)}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease, transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
*{transition:none !important; animation:none !important}
}