/* Space Grotesk via Google Fonts (fallback to system stack) */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&display=swap');

:root {
  --primary-glow: #00f5ff;
  --secondary-glow: #ff6b6b;
  --accent-glow: #4ecdc4;
  --neural-blue: #0d7377;
  --dark-bg: #0a0a0a;
  --node-bg: rgba(13, 115, 119, 0.15);
  --error-glow: #ff6b6b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Space Grotesk', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--dark-bg);
  color: #ffffff;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a0a0a; }
::-webkit-scrollbar-thumb {
  background: var(--primary-glow);
  border-radius: 4px;
  box-shadow: 0 0 10px var(--primary-glow);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-glow); }

/* Layout */
.container { max-width: 1040px; margin: 0 auto; padding: 24px; }
.nav { display:flex; align-items:center; justify-content:space-between; padding: 16px 0; }
.brand { display:flex; align-items:center; gap:12px; text-decoration:none; color:#fff; }
.brand-mark {
  width:36px; height:36px; border-radius:8px; background: radial-gradient(120% 120% at 20% 20%, var(--primary-glow), var(--neural-blue));
  display:grid; place-items:center; color:#000; font-weight:800; letter-spacing:0.5px;
  box-shadow: 0 0 20px rgba(0,245,255,0.35), inset 0 0 16px rgba(0,0,0,0.4);
}
.brand-name { font-weight:700; font-size:18px; letter-spacing:0.3px; }

/* Hero */
.hero { position:relative; padding: 72px 0 24px; text-align:center; }
.kicker { text-transform: uppercase; letter-spacing: 1.2px; font-size: 12px; color: rgba(255,255,255,0.65); font-weight:600; }
.h1 { font-size: clamp(34px, 5vw, 56px); line-height:1.1; margin: 12px 0; font-weight:800; }
.lede { color: #d1d5db; font-size: 18px; max-width: 70ch; margin: 0 auto; }

/* Card */
.data-node {
  position: relative;
  background: var(--node-bg);
  border: 2px solid rgba(0, 245, 255, 0.3);
  border-radius: 20px;
  padding: 2rem;
  margin: 2rem 0;
  backdrop-filter: blur(12px);
  transition: all 0.4s ease;
  overflow: hidden;
  transform-style: preserve-3d;
}
.data-node::before {
  content: '';
  position: absolute; inset: -2px;
  background: linear-gradient(45deg, var(--primary-glow), var(--secondary-glow), var(--accent-glow));
  border-radius: 22px; z-index: -1; opacity: 0; transition: opacity 0.4s ease;
}
.data-node:hover::before { opacity: 1; }
.data-node:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 20px 40px rgba(0, 245, 255, 0.18);
}

/* Grid for multi-card sections */
.grid { display:grid; gap:20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* CTA */
.cta-button {
  background: linear-gradient(135deg, var(--primary-glow), var(--accent-glow));
  border: none; border-radius: 50px; padding: 14px 22px; color: #000; font-weight: 700;
  cursor: pointer; transition: all 0.3s ease; position: relative; overflow: hidden; text-decoration: none; display: inline-block;
}
.cta-button::before {
  content: ''; position: absolute; top:0; left:-100%; width:100%; height:100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.5s ease;
}
.cta-button:hover::before { left: 100%; }
.cta-button:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(0, 245, 255, 0.35); }

/* Footer */
.footer {
  padding: 28px 0; color: #d1d5db; font-size: 14px;
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px;
  border-top: 1px solid rgba(0,245,255,0.2);
}

/* Decorative Background */
.neural-bg {
  position: fixed; top:0; left:0; width:100%; height:100%; z-index:-2;
  background: radial-gradient(circle at 20% 50%, #0d7377 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, #14a085 0%, transparent 50%),
              radial-gradient(circle at 40% 80%, #0f4c75 0%, transparent 50%);
  animation: neuralShift 20s ease-in-out infinite;
}
.neural-grid {
  position: fixed; top:0; left:0; width:100%; height:100%; z-index:-1;
  background-image: linear-gradient(rgba(0, 245, 255, 0.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(0, 245, 255, 0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridPulse 4s ease-in-out infinite;
}
@keyframes neuralShift {
  0%, 100% { transform: rotate(0deg) scale(1); }
  33% { transform: rotate(120deg) scale(1.06); }
  66% { transform: rotate(240deg) scale(0.94); }
}
@keyframes gridPulse {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 0.5; }
}

.glow-text {
  text-shadow: 0 0 20px var(--primary-glow);
  animation: textGlow 2s ease-in-out infinite alternate;
}
@keyframes textGlow {
  from { text-shadow: 0 0 20px var(--primary-glow); }
  to   { text-shadow: 0 0 30px var(--primary-glow), 0 0 40px var(--primary-glow); }
}

/* Links */
a { color: var(--primary-glow); }
a:hover { color: var(--accent-glow); }

/* Small text */
.small { font-size: 14px; color:#d1d5db; }

@media (max-width: 768px) {
  .container { padding: 20px; }
  .hero { padding: 56px 0 16px; }
}