/* Base Styles */
:root {
  --bg: #0b0f14;
  --bg-elev: #0f141b;
  --text: #e6edf3;
  --muted: #9fb1c1;
  --brand: #4f8cff;
  --brand-2: #8a5cff;
  --card: #121923;
  --border: #1e2630;
  --success: #2ecc71;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, #0a0e12 100%);
  color: var(--text);
  line-height: 1.6;
}

.container { width: min(1120px, 92%); margin: 0 auto; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(11,15,20,0.7); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.logo { font-weight: 800; letter-spacing: 0.5px; color: var(--text); text-decoration: none; }
.logo span { color: var(--brand); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 10px; }
.nav .nav-list { display: flex; gap: 18px; list-style: none; margin: 0; padding: 0; align-items: center; }
.nav a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.nav a:hover, .nav a.active { color: var(--text); background: var(--bg-elev); }

/* Buttons */
.btn { display: inline-block; padding: 10px 16px; border: 1px solid var(--border); color: var(--text); text-decoration: none; border-radius: 10px; transition: 0.2s ease; }
.btn.small { padding: 8px 12px; font-size: 14px; }
.btn.primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); border-color: transparent; }
.btn:hover { transform: translateY(-1px); }

/* Hero */
.hero { padding: 80px 0 40px; border-bottom: 1px solid var(--border); }
.hero-inner { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 28px; align-items: center; }
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 12px; }
.hero .sub { color: var(--muted); margin: 0 0 18px; font-size: 18px; }
.cta-group { display: flex; gap: 12px; }
.hero-art { display: grid; place-items: center; }
.blob { width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(120px 120px at 30% 30%, var(--brand), transparent), radial-gradient(140px 140px at 70% 70%, var(--brand-2), transparent), radial-gradient(260px 260px at 50% 50%, #1b2532, #0f141b); filter: blur(0.3px); box-shadow: 0 0 80px rgba(79,140,255,0.35), inset 0 0 40px rgba(138,92,255,0.25); }

/* Highlights */
.highlights { padding: 40px 0 80px; }
.grid.four { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.card .icon { font-size: 22px; }
.card h3 { margin: 8px 0 4px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: #0a0e12; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; flex-wrap: wrap; gap: 12px; }
.footer-links { list-style: none; display: flex; gap: 14px; margin: 0; padding: 0; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }
.footer-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-social { list-style: none; display: flex; gap: 12px; margin: 0 0 0 16px; padding: 0; }
.footer-social a { color: var(--muted); text-decoration: none; border: 1px solid var(--border); padding: 6px 10px; border-radius: 8px; }
.footer-social a:hover { color: var(--text); background: var(--bg-elev); }
.copyright { text-align: center; color: var(--muted); font-size: 14px; padding: 10px 0 24px; border-top: 1px solid var(--border); }

/* Form Inputs */
.input { 
  background: var(--card); 
  border: 1px solid var(--border); 
  color: var(--text); 
  padding: 10px; 
  border-radius: 8px; 
  width: 100%; 
  font-family: inherit;
  transition: border-color 0.2s ease;
}
.input:focus { 
  outline: none; 
  border-color: var(--brand); 
  box-shadow: 0 0 0 2px rgba(79, 140, 255, 0.1);
}
.input::placeholder { color: var(--muted); }

/* Code blocks */
code { 
  background: var(--card); 
  padding: 2px 6px; 
  border-radius: 4px; 
  font-family: 'Courier New', monospace; 
  font-size: 14px;
  border: 1px solid var(--border);
}

/* Project badges */
.project-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: white;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

/* Metrics */
.metric {
  text-align: center;
  padding: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.metric .number {
  display: block;
  font-size: 24px;
  font-weight: 800;
  color: var(--brand);
  margin-bottom: 4px;
}
.metric .label {
  font-size: 14px;
  color: var(--muted);
}

/* Enhanced hover effects */
.card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* CV Button */
.btn.cv {
  background: linear-gradient(135deg, var(--success), #27ae60);
  border-color: transparent;
  color: white;
}

/* Responsive */
@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid.four { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .nav-toggle { display: inline-block; }
  .nav .nav-list { display: none; position: absolute; right: 4%; top: 58px; background: var(--bg-elev); padding: 10px; border: 1px solid var(--border); border-radius: 10px; flex-direction: column; gap: 6px; }
  .nav.open .nav-list { display: flex; }
  .hero { padding-top: 50px; }
  .hero h1 { font-size: 30px; }
  .grid.four { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
  .footer-right { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer-social { margin-left: 0; }
}