/* Undercover.ai — Neon Lab Theme (brain-in-jar) */
:root{
  --bg:#0b0b14;
  --panel:#111122;
  --text:#dbeafe;
  --muted:#9ca3af;
  --primary:#22d3ee; /* teal */
  --accent:#a78bfa;  /* purple */
  --glow: 0 0 18px rgba(34,211,238,.45), 0 0 36px rgba(167,139,250,.25);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(1200px 600px at 10% 0%,#0f1020 0%,#0b0b14 60%,#090910 100%);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;scroll-behavior:smooth}
a{color:var(--primary);text-decoration:none}
.container{width:min(1200px,92%);margin:0 auto}

.site-header{position:sticky;top:0;z-index:50;background:rgba(9,9,16,.6);backdrop-filter:saturate(150%) blur(6px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.logo{font-family:Orbitron,Inter,system-ui,sans-serif;font-weight:700;letter-spacing:.5px}
.logo .word{color:#e5e7eb}
.logo .dot{color:var(--accent)}
.logo .tld{color:var(--primary)}
.logo.small{font-size:.95rem}

.main-nav a{margin-left:18px;opacity:.9}
.main-nav .btn.small{margin-left:22px}

.btn{display:inline-block;padding:12px 18px;border-radius:14px;border:1px solid rgba(255,255,255,.12);transition:.2s all ease;background:transparent}
.btn.primary{border-color:transparent;background:linear-gradient(90deg,var(--primary),var(--accent));color:#021015;box-shadow: var(--glow)}
.btn.primary:hover{transform:translateY(-1px);filter:saturate(110%) brightness(1.05)}
.btn.ghost{border-color:rgba(255,255,255,.14);color:var(--text)}
.btn.ghost:hover{border-color:var(--primary);box-shadow: var(--glow)}

.section{padding:80px 0}
.section.alt{background:linear-gradient(180deg,rgba(167,139,250,.06),rgba(34,211,238,.06))}
.center{text-align:center}
.mt-l{margin-top:28px}

.hero{padding:84px 0 36px;background-image:
radial-gradient(600px 300px at 15% 10%, rgba(34,211,238,.18), transparent 60%),
radial-gradient(800px 400px at 90% 10%, rgba(167,139,250,.18), transparent 60%);}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:center}
.hero h1{font-family:Orbitron,Inter,sans-serif;font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.05;margin:0 0 10px}
.hero .sub{color:var(--muted);font-size:1.05rem;max-width:40ch}
.glow{text-shadow:0 0 12px rgba(34,211,238,.3),0 0 22px rgba(167,139,250,.25)}
.cta-row{display:flex;gap:12px;margin-top:18px}

.hero-image{display:flex;justify-content:center;align-items:center}
.brain-jar{width:100%;height:auto;max-width:420px;border-radius:18px;box-shadow: var(--glow);filter: drop-shadow(0 10px 30px rgba(0,0,0,.45));}

.twocol{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.card{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border:1px solid rgba(255,255,255,.08);border-radius:18px;padding:20px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.cards{grid-template-columns:repeat(4,1fr);display:grid;gap:18px}
.card h3{margin:0 0 6px}
.card p{margin:0 0 12px;color:var(--muted)}
.card .link{display:inline-block;border-bottom:1px dashed var(--primary)}
.card:hover{box-shadow: var(--glow);transform: translateY(-2px)}

.terminal{padding:0;overflow:hidden}
.term-bar{display:flex;gap:8px;align-items:center;padding:10px 12px;background:var(--panel);border-bottom:1px solid rgba(255,255,255,.06)}
.term-bar .dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.term-bar .red{background:#ef4444}.yellow{background:#f59e0b}.green{background:#22c55e}
.term-body{margin:0;padding:16px;background:linear-gradient(180deg,#0b0b18,#090914);color:#c7d2fe;min-height:140px}

.grid.blog{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.blog-card{padding:20px;border-radius:18px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01))}
.blog-card h3{margin:0 0 10px;font-size:1.05rem}
.blog-card p{margin:0 0 12px;color:var(--muted)}
.blog-card a{display:inline-block}

.join{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center}
.signup{display:flex;gap:10px}
.signup input{flex:1;padding:14px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.3);color:var(--text)}
.signup button{white-space:nowrap}

.site-footer{border-top:1px solid rgba(255,255,255,.06);padding:26px 0;background:rgba(10,10,16,.6)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.footer-links{list-style:none;display:flex;gap:16px;padding:0;margin:0}
.copy{color:#9aa1b2;margin:0}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .twocol{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
  .grid.blog{grid-template-columns:1fr 1fr}
  .join{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .cards{grid-template-columns:1fr}
  .grid.blog{grid-template-columns:1fr}
  .main-nav a{margin-left:10px}
}