/* NODE249 Labs — node249.org · noche de laboratorio con los colores de marca */
:root{
  --navy:#03060f; --ink:#e8f0fb; --muted:#8fa2bf; --line:rgba(142,178,230,.14);
  --blue:#0EA5FF; --cyan:#22D3EE; --amber:#F59E0B;
  --grad:linear-gradient(110deg,var(--blue),var(--cyan) 55%,var(--amber) 115%);
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{background:var(--navy);color:var(--ink);font:16px/1.6 Inter,system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100dvh;overflow-x:hidden}
a{color:inherit}

/* fondo: rejilla + halos */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden}
.grid{position:absolute;inset:-2px;background-image:
  linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:44px 44px;mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 30%,transparent 80%)}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.45}
.g1{width:520px;height:520px;left:-120px;top:-160px;background:#0b5fa5}
.g2{width:460px;height:460px;right:-140px;bottom:-160px;background:#0e7490;opacity:.35}

/* cabecera */
.top{display:flex;align-items:center;justify-content:space-between;padding:20px clamp(16px,4vw,40px)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:Sora,sans-serif;font-weight:600;letter-spacing:.02em}
.brand b{color:var(--blue);font-weight:700}
.brand em{font-style:normal;color:var(--amber);margin-left:2px}
.lang{font:600 12px/1 Sora,sans-serif;color:var(--muted);background:transparent;border:1px solid var(--line);
  border-radius:999px;padding:8px 12px;cursor:pointer;transition:color .2s,border-color .2s}
.lang:hover{color:var(--ink);border-color:var(--blue)}

/* hero */
.hero{flex:1;display:flex;flex-direction:column;align-items:center;text-align:center;
  padding:10px 16px 40px;max-width:880px;margin:0 auto;width:100%}
.orbit{position:relative;width:170px;height:170px;margin:10px 0 26px}
.ring{position:absolute;inset:0;border:1px solid rgba(14,165,255,.28);border-radius:50%}
.r2{inset:22px;border-color:rgba(34,211,238,.25);border-style:dashed;animation:spin 26s linear infinite reverse}
.r3{inset:44px;border-color:rgba(245,158,11,.25)}
.r1{animation:spin 40s linear infinite}
.dot{position:absolute;width:9px;height:9px;border-radius:50%;top:50%;left:50%;margin:-4.5px}
.d1{background:var(--blue);box-shadow:0 0 14px var(--blue);animation:orb 9s linear infinite}
.d2{background:var(--cyan);box-shadow:0 0 14px var(--cyan);animation:orb2 6s linear infinite}
.d3{background:var(--amber);box-shadow:0 0 14px var(--amber);animation:orb3 13s linear infinite}
.core{position:absolute;width:54px;height:54px;left:50%;top:50%;margin:-27px;filter:drop-shadow(0 0 18px rgba(14,165,255,.55))}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes orb{from{transform:rotate(0) translateX(85px)}to{transform:rotate(360deg) translateX(85px)}}
@keyframes orb2{from{transform:rotate(120deg) translateX(63px)}to{transform:rotate(480deg) translateX(63px)}}
@keyframes orb3{from{transform:rotate(240deg) translateX(41px)}to{transform:rotate(-120deg) translateX(41px)}}

.status{display:inline-flex;align-items:center;gap:9px;margin:0 0 14px;padding:6px 14px;border:1px solid var(--line);
  border-radius:999px;font:500 12.5px/1.2 "JetBrains Mono",monospace;color:var(--muted);background:rgba(8,16,34,.6)}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 0 rgba(245,158,11,.6);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(245,158,11,0)}100%{box-shadow:0 0 0 0 rgba(245,158,11,0)}}
h1{font:800 clamp(40px,8vw,76px)/1.02 Sora,sans-serif;letter-spacing:-.02em;margin:0 0 16px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(16px,2.2vw,19px);color:var(--muted);max-width:620px;margin:0 0 30px;text-wrap:balance}
.lead em{color:var(--amber);font-style:normal}

.areas{list-style:none;padding:0;margin:0 0 30px;display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.areas li{display:flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);border-radius:12px;
  background:rgba(8,16,34,.55);font-size:14px;transition:border-color .2s,transform .2s}
.areas li:hover{border-color:rgba(14,165,255,.5);transform:translateY(-2px)}
.areas .k{font:500 11px "JetBrains Mono",monospace;color:var(--cyan)}
.areas b{font-weight:600}

.term{width:100%;max-width:560px;text-align:left;margin:0 0 30px;padding:16px 18px;border-radius:14px;
  border:1px solid var(--line);background:rgba(3,8,20,.85);font:13.5px/1.75 "JetBrains Mono",monospace;
  color:#b9c8de;white-space:pre-wrap;overflow-x:auto;box-shadow:0 30px 60px -40px rgba(14,165,255,.35)}
.term .p{color:var(--amber)} .term .c{color:var(--blue)}
.cursor{color:var(--cyan);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.btn{display:inline-block;padding:13px 22px;border-radius:12px;text-decoration:none;font:600 15px Sora,sans-serif;
  color:#02121f;background:var(--blue);box-shadow:0 14px 34px -16px rgba(14,165,255,.9);transition:transform .2s,background .2s}
.btn:hover{transform:translateY(-2px);background:#38b6ff}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn.ghost:hover{border-color:var(--amber);color:var(--amber)}

.foot{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;padding:22px 16px calc(22px + env(safe-area-inset-bottom));
  font-size:13px;color:var(--muted);border-top:1px solid var(--line)}
.foot a{text-decoration:none} .foot a:hover{color:var(--ink)}
.sep{opacity:.4}

@media (max-width:520px){.orbit{transform:scale(.85);margin-bottom:14px}.term{font-size:12px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}