/* ============================================================
   STEPTEN PUBLIC LAYOUT — the reusable chrome for every page.
   Nav + footer only. Tokens come from stepbrand.css — no hex here
   except via var(). The worlds (spreads/stories/presence) keep
   their own HUDs; this chrome is for the public pages.
   ============================================================ */

/* ---------------- THE NAV — the HUD, made public ---------------- */
.st-nav{
  position:fixed;top:0;left:0;right:0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:58px;padding:0 26px;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--txt-hi);
  background:linear-gradient(to bottom,rgba(6,6,8,.72),rgba(6,6,8,0));
  transition:background .4s var(--ease),height .4s var(--ease);
}
.st-nav.is-scrolled{
  height:48px;
  background:rgba(11,11,14,.88);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
/* the iris rail — a whisper under the bar, only once scrolled */
.st-nav::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--iris);background-size:200% 100%;
  opacity:0;transition:opacity .4s var(--ease);
  animation:st-sheen 9s linear infinite;
}
.st-nav.is-scrolled::after{opacity:.35}
@keyframes st-sheen{to{background-position:200% 0}}

.st-nav__links{display:flex;gap:22px;flex:1 1 0}
.st-nav__links a{color:var(--txt-mut);text-decoration:none;transition:color .25s var(--ease)}
.st-nav__links a:hover{color:var(--txt-hi)}
.st-nav__links a[aria-current="page"]{color:var(--green)}

.st-nav__mark{
  position:absolute;left:50%;transform:translateX(-50%);
  font-weight:700;letter-spacing:.22em;text-decoration:none;
  background:var(--iris);background-size:200% 100%;
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  animation:st-sheen 9s linear infinite;
}

.st-nav__status{
  display:inline-flex;align-items:center;gap:9px;
  flex:1 1 0;justify-content:flex-end;color:var(--txt-mut);
}
.st-nav__status .dot{
  width:7px;height:7px;border-radius:50%;background:var(--green);
  box-shadow:0 0 8px var(--green);animation:st-blink 1.6s infinite;
}
@keyframes st-blink{0%,100%{opacity:1}50%{opacity:.35}}
.st-nav__status b{color:var(--txt-hi);font-weight:400}

@media(max-width:640px){
  .st-nav{padding:0 16px}
  .st-nav__links{gap:14px;letter-spacing:.12em}
  .st-nav__status{display:none}
  .st-nav__mark{position:static;transform:none;margin-left:auto}
}

/* ---------------- THE FOOTER — the sign-off band ---------------- */
/* Void backdrop is lawful here: the 3D lives behind it. */
.st-foot{
  position:relative;overflow:hidden;
  background:var(--ink-0);color:var(--txt-mid);
  border-top:1px solid var(--line);
  font-family:var(--body);
}
.st-foot::before{ /* iris rail on entry */
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--iris);background-size:200% 100%;
  animation:st-sheen 9s linear infinite;opacity:.8;
}
.st-foot__stage{position:absolute;inset:0;z-index:0;pointer-events:none}
.st-foot__stage canvas{display:block}
.st-foot__inner{
  position:relative;z-index:1;max-width:1180px;margin:0 auto;
  padding:72px 26px 0;
}
.st-foot__sign{max-width:760px}
.st-foot__sign .kick{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--green);display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;
}
.st-foot__sign .kick i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 9px var(--green)}
.st-foot__sign h2{
  font-family:var(--disp);font-weight:400;text-transform:uppercase;
  font-size:clamp(44px,7.5vw,108px);line-height:.86;letter-spacing:.01em;color:var(--txt-hi);
}
.st-foot__sign h2 .iris{
  background:var(--iris);background-size:200% 100%;
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  animation:st-sheen 8s linear infinite;
}
.st-foot__sign p{margin-top:16px;font-size:15.5px;color:var(--txt-mut);max-width:52ch;line-height:1.55}

.st-foot__map{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;
  margin-top:56px;padding-top:30px;border-top:1px solid var(--line);
}
@media(max-width:760px){.st-foot__map{grid-template-columns:1fr;gap:20px}}
.st-foot__map .k{
  font-family:var(--mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--txt-mut);display:block;margin-bottom:12px;
}
.st-foot__map a{
  display:block;color:var(--txt-mid);text-decoration:none;
  font-size:14px;padding:5px 0;transition:color .25s var(--ease);
}
.st-foot__map a:hover{color:var(--green)}
.st-foot__map a span{
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--txt-mut);
  text-transform:uppercase;margin-left:8px;
}

.st-foot__credit{
  position:relative;z-index:1;margin-top:56px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--txt-mut);
}
.st-foot__credit .row{
  max-width:1180px;margin:0 auto;padding:20px 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
.st-foot__credit b{color:var(--txt-mid);font-weight:400}

@media (prefers-reduced-motion:reduce){
  .st-nav::after,.st-nav__mark,.st-foot::before,.st-foot__sign h2 .iris{animation:none}
  .st-nav__status .dot,.st-foot__sign .kick i{animation:none}
}