/* ============================================================
   THE SIMULATION LAB — shared design system
   Derived entirely from the logo: deep navy-black, electric
   cyan, lab green, chrome lettering, glowing circuit ring.
   ============================================================ */

/* ---- TOKENS ---- */
:root{
  --bg:        #0A0E14;   /* primary near-black navy            */
  --bg-2:      #080B10;   /* deepest wells                      */
  --panel:     #0D1620;   /* raised panels                      */
  --panel-2:   #101D2A;   /* hover / nested panels              */

  --cyan:      #22B8E6;   /* primary accent                     */
  --cyan-2:    #4FD0F5;   /* lighter cyan for text on dark      */
  --green:     #6FE07B;   /* secondary accent                   */
  --grad:      linear-gradient(135deg,#22B8E6,#6FE07B);
  --grad-soft: linear-gradient(135deg,rgba(34,184,230,.16),rgba(111,224,123,.16));

  --heading:   #D7DEE3;   /* chrome heading text                */
  --body:      #9AA7B0;   /* body text on dark                  */
  --muted:     #66747F;   /* captions / meta                    */

  --hair:        rgba(255,255,255,0.08);
  --hair-strong: rgba(255,255,255,0.15);
  --glass:       rgba(255,255,255,0.025);
  --glass-2:     rgba(255,255,255,0.05);

  --glow-cyan:  rgba(34,184,230,0.45);
  --glow-green: rgba(111,224,123,0.40);

  --r:      4px;          /* near-zero, architectural           */
  --r-lg:   6px;
  --maxw:   1180px;
  --gut:    clamp(20px, 5vw, 56px);

  --f-head: "Space Grotesk", system-ui, sans-serif;
  --f-body: "Inter", system-ui, sans-serif;
  --f-mark: "Orbitron", "Space Grotesk", sans-serif;

  --ease: cubic-bezier(.2,.7,.3,1);
}

/* ---- RESET ---- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.65;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:var(--cyan-2); text-decoration:none; transition:color .2s var(--ease); }
a:hover{ color:var(--green); }
button{ font-family:inherit; cursor:pointer; }
h1,h2,h3,h4{ font-family:var(--f-head); color:var(--heading); margin:0; line-height:1.08; letter-spacing:-.02em; font-weight:600; }
p{ margin:0; text-wrap:pretty; }
::selection{ background:rgba(34,184,230,.3); color:#fff; }

/* ---- FOCUS (glowing cyan) ---- */
:where(a,button,input,[tabindex]):focus-visible{
  outline:none;
  box-shadow:0 0 0 2px var(--bg), 0 0 0 4px var(--cyan), 0 0 16px var(--glow-cyan);
  border-radius:var(--r);
}

/* ---- LAYOUT ---- */
.wrap{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gut); }
.section{ position:relative; padding-block:clamp(64px,9vw,128px); }
.section--tight{ padding-block:clamp(48px,6vw,80px); }
.eyebrow{
  font-family:var(--f-head); font-weight:500; font-size:.74rem;
  letter-spacing:.34em; text-transform:uppercase; color:var(--cyan);
  display:inline-flex; align-items:center; gap:.6em; margin:0 0 18px;
}
.eyebrow::before{ content:""; width:26px; height:1px; background:var(--cyan); opacity:.6; }
.lede{ font-size:clamp(1.02rem,1.6vw,1.18rem); color:var(--body); max-width:60ch; }

/* ---- TEXT TREATMENTS ---- */
.chrome{
  background:linear-gradient(176deg,#ffffff 4%,#E3E9ED 30%,#8C99A2 52%,#E3E9ED 70%,#ffffff 96%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  -webkit-text-fill-color:transparent;
}
.grad-text{
  background:
    linear-gradient(110deg, transparent 38%, rgba(255,255,255,.45) 50%, transparent 62%),
    var(--grad);
  background-size:220% 100%, 100% 100%;
  background-repeat:no-repeat;
  -webkit-background-clip:text; background-clip:text; color:transparent;
  -webkit-text-fill-color:transparent;
  animation:gradShimmer 7s linear infinite;
}
@keyframes gradShimmer{ 0%{ background-position:160% 0, 0 0; } 100%{ background-position:-60% 0, 0 0; } }
@media (prefers-reduced-motion: reduce){
  .grad-text{ background:var(--grad); -webkit-background-clip:text; background-clip:text; background-size:auto; animation:none; }
}

/* ---- BUTTONS ---- */
.btn{
  --bw:1px;
  display:inline-flex; align-items:center; justify-content:center; gap:.55em;
  font-family:var(--f-head); font-weight:600; font-size:.95rem; letter-spacing:.01em;
  padding:.92em 1.55em; border-radius:var(--r); border:var(--bw) solid transparent;
  white-space:nowrap; transition:transform .2s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .2s var(--ease);
  position:relative;
}
.btn:active{ transform:translateY(1px); }
.btn--primary{
  background:var(--grad); color:#04222b; border-color:transparent;
  box-shadow:0 0 0 1px rgba(34,184,230,.4), 0 6px 26px -8px var(--glow-cyan);
}
.btn--primary:hover{
  color:#04222b;
  box-shadow:0 0 0 1px rgba(111,224,123,.6), 0 10px 40px -8px var(--glow-green);
  transform:translateY(-2px);
}
.btn--ghost{
  background:var(--glass); color:var(--heading);
  border-color:var(--hair-strong); backdrop-filter:blur(6px);
}
.btn--ghost:hover{
  color:#fff; border-color:var(--cyan);
  box-shadow:0 0 22px -6px var(--glow-cyan); transform:translateY(-2px);
}
.btn--sm{ padding:.62em 1.05em; font-size:.84rem; }
.btn--block{ width:100%; }

/* ---- GLASS CARD ---- */
.card{
  position:relative; background:var(--glass);
  border:1px solid var(--hair); border-radius:var(--r-lg);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  padding:30px; transition:border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}
.card:hover{ border-color:var(--hair-strong); background:var(--glass-2); }
.card--accent::before{
  content:""; position:absolute; inset:0; border-radius:inherit; padding:1px;
  background:var(--grad); opacity:0;
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude;
  transition:opacity .35s var(--ease); pointer-events:none;
}
.card--accent:hover::before{ opacity:.7; }

/* ---- BADGES ---- */
.badge{
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--f-head); font-weight:500; font-size:.72rem;
  letter-spacing:.14em; text-transform:uppercase;
  padding:.4em .8em; border-radius:999px; white-space:nowrap;
  border:1px solid var(--hair-strong); background:rgba(255,255,255,.03); color:var(--body);
}
.badge--live{
  border-color:rgba(111,224,123,.4); color:var(--green);
  background:rgba(111,224,123,.07);
}
.badge--live .dot{
  width:7px; height:7px; border-radius:50%; background:var(--green);
  box-shadow:0 0 0 0 var(--glow-green); animation:pulseDot 2.4s var(--ease) infinite;
}
.badge--era{ border-color:var(--hair); color:var(--cyan-2); letter-spacing:.1em; }
@keyframes pulseDot{
  0%{ box-shadow:0 0 0 0 rgba(111,224,123,.5); }
  70%{ box-shadow:0 0 0 7px rgba(111,224,123,0); }
  100%{ box-shadow:0 0 0 0 rgba(111,224,123,0); }
}
@media (prefers-reduced-motion: reduce){ .badge--live .dot{ animation:none; } }

/* ---- CIRCUIT BACKGROUND (injected by circuit.js) ---- */
.circuit-bg{
  position:fixed; inset:0; z-index:-2; pointer-events:none; overflow:hidden;
  background:
    radial-gradient(1100px 700px at 72% -8%, rgba(34,184,230,.10), transparent 60%),
    radial-gradient(900px 620px at 10% 12%, rgba(111,224,123,.07), transparent 60%),
    var(--bg);
}
.circuit-bg svg{ position:absolute; inset:0; width:100%; height:100%; opacity:.5; }
.circuit-bg .glow{
  position:absolute; width:60vw; height:60vw; max-width:760px; max-height:760px;
  border-radius:50%; filter:blur(80px); opacity:.5;
  background:radial-gradient(circle, rgba(34,184,230,.28), transparent 65%);
  top:-12%; right:-6%; animation:drift 26s ease-in-out infinite alternate;
}
.circuit-bg .glow.g2{
  background:radial-gradient(circle, rgba(111,224,123,.20), transparent 65%);
  top:auto; bottom:-18%; left:-10%; right:auto; animation-duration:34s; animation-delay:-8s;
}
@keyframes drift{
  0%{ transform:translate(0,0) scale(1); }
  100%{ transform:translate(-5%,4%) scale(1.12); }
}
.circuit-bg .grid{
  position:absolute; inset:0; opacity:.4;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%, #000, transparent 78%);
  mask-image:radial-gradient(circle at 50% 22%, #000, transparent 78%);
}
@media (prefers-reduced-motion: reduce){ .circuit-bg .glow{ animation:none; } }

/* circuit trace flow — extremely subtle */
.trace{ stroke:var(--cyan); fill:none; stroke-width:1; opacity:.16; }
.trace.flow{
  stroke-dasharray:6 220;
  animation:flow 22s linear infinite;
}
.node{ fill:var(--green); opacity:.5; animation:nodePulse 5s ease-in-out infinite; }
.node.c{ fill:var(--cyan); }
@keyframes flow{ to{ stroke-dashoffset:-1356; } }
@keyframes nodePulse{ 0%,100%{ opacity:.18; } 50%{ opacity:.6; } }
@media (prefers-reduced-motion: reduce){ .trace.flow{ animation:none; } .node{ animation:none; } }

/* ---- NAV ---- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(10,14,20,.72); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hair);
}
.nav__inner{ display:flex; align-items:center; gap:24px; height:68px; }
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ width:34px; height:34px; border-radius:50%; filter:drop-shadow(0 0 10px rgba(34,184,230,.4)); }
.brand .wm{
  font-family:var(--f-mark); font-weight:700; font-size:.86rem; letter-spacing:.12em;
  white-space:nowrap;
}
.brand .wm .a{ color:var(--heading); }
.nav__links{ display:flex; align-items:center; gap:6px; margin-left:auto; }
.nav__links a{
  font-family:var(--f-head); font-weight:500; font-size:.9rem; color:var(--body);
  padding:8px 14px; border-radius:var(--r); transition:color .2s, background .2s;
}
.nav__links a:hover, .nav__links a[aria-current="page"]{ color:var(--heading); background:var(--glass-2); }
.nav__toggle{ display:none; background:none; border:1px solid var(--hair-strong); border-radius:var(--r); width:40px; height:38px; color:var(--heading); margin-left:auto; }
@media (max-width:860px){
  .nav__links{
    position:absolute; top:68px; left:0; right:0; flex-direction:column; align-items:stretch; gap:2px;
    background:rgba(8,11,16,.96); backdrop-filter:blur(14px);
    border-bottom:1px solid var(--hair); padding:12px var(--gut) 18px; margin:0;
    transform:translateY(-12px); opacity:0; pointer-events:none; transition:.25s var(--ease);
  }
  .nav__links.open{ transform:none; opacity:1; pointer-events:auto; }
  .nav__links a{ padding:12px 10px; }
  .nav__links .btn{ margin-top:8px; }
  .nav__toggle{ display:inline-flex; align-items:center; justify-content:center; }
}

/* ---- FOOTER ---- */
.footer{ border-top:1px solid var(--hair); background:var(--bg-2); position:relative; z-index:1; }
.footer__grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px; padding-block:64px 40px; }
.footer__about{ max-width:42ch; color:var(--muted); font-size:.92rem; }
.footer h4{ font-size:.78rem; letter-spacing:.2em; text-transform:uppercase; color:var(--body); margin-bottom:16px; font-weight:600; }
.footer__links{ display:flex; flex-direction:column; gap:10px; }
.footer__links a{ color:var(--body); font-size:.94rem; }
.footer__bar{ border-top:1px solid var(--hair); padding-block:22px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; color:var(--muted); font-size:.82rem; }
@media (max-width:760px){ .footer__grid{ grid-template-columns:1fr; gap:32px; } }

/* ---- UTILITIES ---- */
.stack-sm > * + *{ margin-top:14px; }
.stack > * + *{ margin-top:24px; }
.center{ text-align:center; }
.grid{ display:grid; gap:24px; }
.cols-3{ grid-template-columns:repeat(3,1fr); }
.cols-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:900px){ .cols-3{ grid-template-columns:1fr; } .cols-2{ grid-template-columns:1fr; } }
.hairline{ height:1px; background:var(--hair); border:0; margin:0; }

/* reveal on scroll */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; } }