/* ─────────────────────────────────────────────────────────────────────
   site-shell.css — canonical header + footer styles for non-homepage pages
   Extracted from /index.html (Build #45) so /wave-lattice/, /loess-lattice/,
   /rogue-wave-lattice/, /compliance/ render the same condensed dropdown
   navigation and the same site-footer block as the homepage.
   ───────────────────────────────────────────────────────────────────── */

/* Header shell */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(10,13,18,0.96);
  backdrop-filter:saturate(140%) blur(18px);
  -webkit-backdrop-filter:saturate(140%) blur(18px);
  border-bottom:1px solid rgba(255,255,255,0.08);
  box-shadow:0 1px 0 rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.25);
}
.site-header .header-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:24px;
  padding:14px 0;
}
.site-header .brand{display:flex;align-items:center;gap:14px;text-decoration:none}
.site-header .brand-mark{display:block;width:42px;height:42px;flex-shrink:0;border-radius:8px}
.site-header .brand-text{display:flex;flex-direction:column;gap:0}
.site-header .brand-eyebrow{font-size:11px;letter-spacing:0.28em;text-transform:uppercase;color:#EBA628;font-weight:500}
.site-header .brand-line{font-size:13px;color:rgba(232,237,243,0.7);margin-top:3px;line-height:1.3;max-width:48ch}
.site-header .header-cta{flex:none;gap:8px;display:flex;align-items:center}
.site-header .header-cta .btn{white-space:nowrap}

/* Condensed dropdown nav */
.site-header .nav.nav--condensed{
  display:flex; align-items:center; justify-content:flex-end;
  gap:4px; flex:none; min-width:0;
}
.site-header .nav.nav--condensed .nav-item{
  position:relative;
  display:flex; align-items:center;
}
.site-header .nav.nav--condensed .nav-link{
  display:inline-flex; align-items:center; gap:6px;
  font-size:13.5px; font-weight:500;
  color:rgba(232,237,243,0.78);
  padding:10px 14px;
  border-radius:10px;
  letter-spacing:0.005em;
  white-space:nowrap; line-height:1;
  transition:color .18s ease, background .18s ease;
  cursor:pointer; user-select:none;
  border:0; background:transparent;
  font-family:inherit;
  text-decoration:none;
}
.site-header .nav.nav--condensed .nav-link:hover,
.site-header .nav.nav--condensed .nav-link:focus-visible,
.site-header .nav.nav--condensed .nav-item.is-open > .nav-link{
  color:#fff;
  background:rgba(255,255,255,0.04);
  outline:none;
}
.site-header .nav.nav--condensed .nav-link .caret{
  width:9px;height:9px;flex-shrink:0;
  transition:transform .18s ease;
  opacity:0.7;
}
.site-header .nav.nav--condensed .nav-item.is-open .caret,
.site-header .nav.nav--condensed .nav-item:hover .caret{ transform:rotate(180deg); opacity:1 }

/* Dropdown panel */
.site-header .nav-dropdown{
  position:absolute;
  top:calc(100% + 8px); right:0;
  min-width:280px; max-width:560px;
  background:#11161D;
  border:1px solid rgba(232,237,243,0.12);
  border-radius:14px;
  box-shadow:0 24px 60px rgba(0,0,0,0.55), 0 2px 0 rgba(235,166,40,0.06);
  padding:18px;
  display:grid; gap:12px;
  opacity:0; visibility:hidden; pointer-events:none;
  transform:translateY(-6px);
  transition:opacity 180ms ease, transform 180ms ease, visibility 0s linear 180ms;
  z-index:60;
}
.site-header .nav-item:hover > .nav-dropdown,
.site-header .nav-item.is-open > .nav-dropdown,
.site-header .nav-item:focus-within > .nav-dropdown{
  opacity:1; visibility:visible; pointer-events:auto;
  transform:translateY(0);
  transition:opacity 180ms ease, transform 180ms ease, visibility 0s linear 0s;
}
.site-header .nav-dropdown.dd-verticals{
  width:min(640px, calc(100vw - 48px));
  grid-template-columns:1fr 1fr;
  gap:8px 14px;
  right:0;
}
.site-header .nav-dropdown.dd-crypto{
  width:min(380px, calc(100vw - 48px));
}
.site-header .nav-dropdown a{
  display:flex; flex-direction:column; gap:3px;
  padding:10px 12px;
  border-radius:10px;
  text-decoration:none;
  border:1px solid transparent;
  transition:background .15s ease, border-color .15s ease, transform .15s ease;
}
.site-header .nav-dropdown a:hover,
.site-header .nav-dropdown a:focus-visible{
  background:rgba(235,166,40,0.04);
  border-color:rgba(192,141,35,0.4);
  outline:none;
  transform:translateY(-1px);
}
.site-header .nav-dropdown .dd-eyebrow{
  font-family:ui-monospace,SFMono-Regular,'JetBrains Mono',Menlo,Consolas,monospace;
  font-size:10.5px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:#EBA628;
  font-weight:500;
  line-height:1.2;
}
.site-header .nav-dropdown .dd-desc{
  font-size:12.5px;
  color:rgba(232,237,243,0.7);
  line-height:1.4;
  font-weight:400;
}

/* Hamburger */
.site-header .nav-burger{
  display:none;
  width:42px; height:42px;
  align-items:center; justify-content:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.10);
  background:transparent;
  color:#EBA628;
  cursor:pointer;
}
.site-header .nav-burger:hover{ background:rgba(255,255,255,0.04) }
.site-header .nav-burger svg{ display:block }

/* Mobile sheet */
.site-header .nav-mobile{
  display:none;
  position:fixed;
  top:64px; left:0; right:0;
  background:#0A0D12;
  border-top:1px solid rgba(255,255,255,0.08);
  border-bottom:1px solid rgba(255,255,255,0.08);
  max-height:calc(100vh - 64px);
  overflow-y:auto;
  z-index:55;
  padding:18px 24px 24px;
}
.site-header .nav-mobile.is-open{ display:block }
.site-header .nav-mobile-section{
  border-bottom:1px solid rgba(255,255,255,0.06);
  padding:6px 0;
}
.site-header .nav-mobile-section:last-child{ border-bottom:0 }
.site-header .nav-mobile-trigger{
  width:100%;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 4px;
  font-size:15px; font-weight:500;
  color:#fff;
  background:transparent; border:0;
  cursor:pointer;
  text-align:left;
  font-family:inherit;
}
.site-header .nav-mobile-trigger .caret{
  width:11px;height:11px;flex-shrink:0;
  opacity:0.6;
  transition:transform .18s ease;
}
.site-header .nav-mobile-section.is-open .nav-mobile-trigger .caret{ transform:rotate(180deg) }
.site-header .nav-mobile-link{
  display:block;
  padding:14px 4px;
  font-size:15px; font-weight:500;
  color:#fff; text-decoration:none;
}
.site-header .nav-mobile-panel{
  display:none;
  padding:4px 0 14px;
  flex-direction:column;
  gap:4px;
}
.site-header .nav-mobile-section.is-open .nav-mobile-panel{ display:flex }
.site-header .nav-mobile-panel a{
  display:flex; flex-direction:column; gap:2px;
  padding:10px 12px;
  border-radius:10px;
  text-decoration:none;
  background:rgba(255,255,255,0.02);
}
.site-header .nav-mobile-panel a:hover{ background:rgba(235,166,40,0.06) }
.site-header .nav-mobile-panel .dd-eyebrow{
  font-family:ui-monospace,SFMono-Regular,'JetBrains Mono',Menlo,Consolas,monospace;
  font-size:10px; letter-spacing:0.18em; text-transform:uppercase;
  color:#EBA628; font-weight:500;
}
.site-header .nav-mobile-panel .dd-desc{
  font-size:12.5px; color:rgba(232,237,243,0.7); line-height:1.4;
}
.site-header .nav-mobile-cta{
  display:flex; flex-direction:column; gap:10px;
  margin-top:18px;
}
.site-header .nav-mobile-cta .btn{ width:100% }

/* Hide site-nav.js auto-injected hamburger — we have our own drawer */
.site-header .hive-burger{ display:none !important }

/* Responsive */
@media (max-width:1080px){
  .site-header .nav.nav--condensed .nav-link{ padding:9px 11px; font-size:13px }
  .site-header .nav-dropdown.dd-verticals{ width:min(580px, calc(100vw - 32px)) }
}
@media (max-width:960px){
  .site-header .nav.nav--condensed{ display:none }
  .site-header .nav-burger{ display:inline-flex }
  .site-header .header-cta .btn:first-child{ display:none }
}
@media (max-width:720px){
  .site-header .brand-line{ display:none }
}
@media (max-width:560px){
  .site-header .header-cta .btn{ display:none }
  .site-header .header-cta .btn.btn-gold{ display:inline-flex; padding:9px 14px; font-size:12.5px }
  .site-header .brand-eyebrow{ font-size:12px }
  .site-header .header-inner{ gap:12px }
}
@media(prefers-reduced-motion:reduce){
  .site-header .nav-dropdown,
  .site-header .nav.nav--condensed .nav-link .caret{ transition:none }
}

/* Sub-nav strip (page-internal anchors below hero) */
.site-subnav{
  position:sticky; top:64px; z-index:30;
  background:rgba(10,13,18,0.85);
  backdrop-filter:saturate(140%) blur(14px);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.site-subnav .wrap{
  display:flex; align-items:center; gap:18px; flex-wrap:wrap;
  padding:10px 0;
  font-family:ui-monospace,SFMono-Regular,'JetBrains Mono',Menlo,Consolas,monospace;
  font-size:11.5px; letter-spacing:0.14em; text-transform:uppercase;
}
.site-subnav .subnav-label{ color:#EBA628; font-weight:500 }
.site-subnav a{
  color:rgba(232,237,243,0.7);
  text-decoration:none;
  padding:4px 0;
  border-bottom:1px solid transparent;
  transition:color .15s ease, border-color .15s ease;
}
.site-subnav a:hover{ color:#fff; border-bottom-color:#EBA628 }

/* Footer shell */
.site-footer{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:44px 0 56px;
  margin-top:60px;
  background:transparent;
}
.site-footer .footer-inner{
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:24px;flex-wrap:wrap;
}
.site-footer .footer-brand{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
}
.site-footer .footer-brand-lockup{display:block;width:auto;height:54px;flex-shrink:0}
.site-footer .footer-brand-text{display:flex;flex-direction:column;gap:2px}
.site-footer .footer-brand .tag{color:rgba(232,237,243,0.5);font-size:13.5px;margin-top:4px}
.site-footer .footer-nav{display:flex;flex-wrap:wrap;gap:18px}
.site-footer .footer-nav a{font-size:13px;color:rgba(232,237,243,0.55);text-decoration:none;transition:color .15s ease}
.site-footer .footer-nav a:hover{color:rgba(248,251,255,0.85)}
.site-footer .footer-meta{margin-top:28px;font-size:12px;color:rgba(232,237,243,0.4)}