:root {
  --bg: #070a13;
  --surface: #0b0f1a;
  --card: #0f1524;
  --muted: #a0b3d1;
  --text: #e6ecff;
  --primary: #6ae3ff;
  --primary-strong: #00e0ff;
  --accent: #7b6cff;
  --glow: 0 0 32px rgba(0, 224, 255, 0.45);
  --radius: 16px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 80% -10%, #0b1a2e 0%, #070a13 50%),
              linear-gradient(180deg, #05070d 0%, #070a13 100%);
  background-repeat: no-repeat, no-repeat;
  background-attachment: fixed, fixed;
  background-color: #070a13;
  padding-top: 76px; /* offset for fixed header */
  overflow-x: hidden;
}

.bg-canvas { position: fixed; inset: 0; z-index: -1; }

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

/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; backdrop-filter: blur(8px); background: linear-gradient(180deg, rgba(7,10,19,0.92), rgba(7,10,19,0.68)); border-bottom: 1px solid rgba(255,255,255,.08); box-shadow: 0 6px 22px rgba(0,0,0,.35); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-logo { width: 40px; height: 40px; object-fit: contain; filter: drop-shadow(0 6px 14px rgba(0,0,0,.35)); }
#brand-name { font-family: 'Orbitron', sans-serif; letter-spacing: .08em; font-weight: 800; font-size: 1.05rem; text-transform: uppercase; }

.site-nav { display: flex; align-items: center; gap: 18px; }
.site-nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.site-nav a:hover { color: var(--text); }
.site-nav .github-link { display:inline-flex; align-items:center; gap:6px; padding:8px 14px; border:1px solid rgba(255,255,255,.12); border-radius:999px; font-size:13px; line-height:1; font-weight:600; background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02)); backdrop-filter:blur(4px); transition:background .25s ease, box-shadow .25s ease, transform .25s ease; }
.site-nav .github-link svg { opacity:.85; }
.site-nav .github-link:hover { background:rgba(255,255,255,.14); color:var(--text); box-shadow:0 4px 22px rgba(0,0,0,.4); transform:translateY(-2px); }
.site-nav .github-link:active { transform:translateY(0); box-shadow:0 2px 12px rgba(0,0,0,.5); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 12px 18px; border-radius: 999px; text-decoration: none; font-weight: 700; letter-spacing: .02em; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn-primary { color: #001217; background: linear-gradient(180deg, var(--primary), var(--primary-strong)); box-shadow: var(--glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 36px rgba(0, 224, 255, 0.6); }
.btn-outline { border: 1px solid rgba(255,255,255,.16); color: var(--text); }
.btn-outline:hover { background: rgba(255,255,255,.06); }
.btn-ghost { color: var(--text); background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; padding: 72px 0 40px; align-items: center; }

/* Anchor offset for fixed header */
section { scroll-margin-top: 96px; }
.hero-copy { position: relative; }
.flair { position: absolute; inset: -10% auto auto -10%; width: 360px; height: 360px; background: radial-gradient(closest-side, rgba(0,224,255,.25), transparent 70%); filter: blur(24px); pointer-events: none; }
.hero-title { font-family: 'Orbitron', sans-serif; font-size: clamp(38px, 6.2vw, 84px); line-height: 1.02; letter-spacing: .02em; margin: 0; }
.highlight { display: inline-block; margin-left: .4ch; background: linear-gradient(90deg, var(--primary-strong), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; text-shadow: 0 0 18px rgba(0, 224, 255, 0.35); }
.hero-tagline { color: var(--muted); font-size: clamp(16px, 2.2vw, 20px); line-height: 1.6; max-width: 64ch; }
.hero-ctas { display: flex; gap: 12px; margin-top: 14px; }
.hero-stats { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; margin-top: 26px; }
.stat { background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border: 1px solid rgba(255,255,255,.06); border-radius: var(--radius); padding: 16px; }
.stat .value { font-family: 'Orbitron', sans-serif; font-size: 28px; }
.stat .label { color: var(--muted); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }

.hero-visual { position: relative; min-height: 420px; display: grid; place-items: center; }
.orb { position: absolute; width: 380px; height: 380px; border-radius: 50%; background: radial-gradient(closest-side, rgba(0,224,255,.22), rgba(123,108,255,.12) 60%, transparent 70%); filter: blur(8px); animation: pulse 5s ease-in-out infinite; }
.drone-mark { position: relative; width: clamp(140px, 24vw, 240px); filter: drop-shadow(0 10px 38px rgba(0,224,255,.3)); transform: translateZ(0); animation: float 8s ease-in-out infinite; }
.ring { position: absolute; border-radius: 50%; border: 1px dashed rgba(255,255,255,.18); width: 320px; height: 320px; animation: spin 24s linear infinite; }
.ring-2 { width: 460px; height: 460px; animation-duration: 36s; }
.ring-3 { width: 600px; height: 600px; animation-duration: 44s; }

@keyframes float { 0%,100%{ transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes spin { 0% { transform: rotate(0); } 100% { transform: rotate(360deg); } }
@keyframes pulse { 0%,100%{ opacity: .65; } 50% { opacity: 1; } }

/* Features */
.section-title { font-family: 'Orbitron', sans-serif; font-size: 26px; letter-spacing: .08em; text-transform: uppercase; margin: 64px 0 18px; }
.features .grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border: 1px solid rgba(255,255,255,.06); border-radius: var(--radius); padding: 18px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.card:hover { transform: translateY(-3px); box-shadow: 0 6px 38px rgba(0,0,0,.4); border-color: rgba(255,255,255,.12); }
.icon { font-size: 24px; }
.card-title { margin: 8px 0 4px; }
.card-text { color: var(--muted); }

/* Showcase */
.video-frame { position: relative; overflow: hidden; border-radius: calc(var(--radius) + 4px); border: 1px solid rgba(255,255,255,.08); background: #060a12; box-shadow: 0 40px 120px rgba(0,0,0,.45), inset 0 0 80px rgba(0,224,255,.06); }
.video-frame::before { content: ""; display: block; padding-top: 56.25%; }
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* Specs */
.specs-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.spec { background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02)); border: 1px solid rgba(255,255,255,.06); border-radius: var(--radius); padding: 16px; }
.spec .k { color: var(--muted); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.spec .v { font-family: 'Orbitron', sans-serif; font-size: 22px; }

/* CTA */
.cta { margin: 72px auto; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 26px; border-radius: calc(var(--radius) + 4px); background: linear-gradient(135deg, rgba(0,224,255,.1), rgba(123,108,255,.08)); border: 1px solid rgba(255,255,255,.12); box-shadow: var(--glow); }

/* Footer */
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 60px 0 80px; color: var(--muted); }
.footer-left { display: flex; align-items: center; gap: 10px; }
.footer-logo { width: 28px; height: 28px; object-fit: contain; }

/* Parallax subtle */
.parallax-item { will-change: transform; transition: transform .2s ease; }

/* Responsive */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { order: -1; min-height: 360px; }
  .features .grid, .specs-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 640px) {
  .site-nav a { display: none; }
  #nav-contact { display: inline-flex; }
  .features .grid, .specs-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: start; }
}