/* Header chrome — theme toggle + mobile nav contrast 2026-09-23
   v5: close icon = clean X (not asterisk); sheet contrast from v4 kept.
   Root cause (partner + similar): body.page-* set --text:#0F172A globally;
   .sheet-nav a { color:var(--text) } + dark --bg → dark-on-dark.
   Active lime (aria-current / --cta) stayed visible. */

.theme-seg{
  display:inline-flex;
  flex:none;
  width:max-content;
  max-width:100%;
  align-items:stretch;
}
.theme-seg button{
  white-space:nowrap !important;
  flex:0 0 auto !important;
  overflow:visible !important;
  text-overflow:clip;
  line-height:1.1;
  min-width:4.5rem;
  padding:0 12px;
}
@media (width >= 1024px){
  .header-cluster{flex-shrink:0;gap:10px;}
  .theme-seg{height:36px;}
  .theme-seg button{min-width:4.85rem;font-size:.75rem;}
}
@media (width >= 1024px) and (width <= 1180px){
  .theme-seg button{min-width:4.35rem;padding:0 10px;font-size:.72rem;}
  .locale-trigger{min-width:80px;padding:0 8px;}
  .btn--header{padding:0 12px;}
}

/* —— Hamburger / close X ——
   Asterisk bug: theme rules set span background !important with higher
   specificity than .is-open → middle bar stayed visible + two diagonals = *.
   Fix: hide middle bar with matching specificity; absolute-center the two bars. */
.site-header .nav-toggle{
  background:transparent !important;
  -webkit-appearance:none;
  appearance:none;
  position:relative;
}
.site-header .nav-toggle span{
  display:block !important;
  position:relative !important;
  width:18px !important;
  height:2px !important;
  border-radius:1px;
  transition:background .15s ease, transform .15s ease;
}
.site-header .nav-toggle span:before,
.site-header .nav-toggle span:after{
  content:"" !important;
  display:block !important;
  position:absolute !important;
  left:0 !important;
  width:18px !important;
  height:2px !important;
  border-radius:1px;
  transform-origin:center center !important;
  transition:top .15s ease, transform .15s ease, background .15s ease;
}
.site-header .nav-toggle span:before{top:-6px !important;transform:none !important;}
.site-header .nav-toggle span:after{top:6px !important;transform:none !important;}

/* Colors closed (hamburger) */
html[data-theme="light"] .site-header .nav-toggle,
:root:not([data-theme="dark"]) .site-header .nav-toggle{
  color:#0F172A !important;
  border-color:#94A3B8 !important;
}
html[data-theme="light"] .site-header .nav-toggle span,
html[data-theme="light"] .site-header .nav-toggle span:before,
html[data-theme="light"] .site-header .nav-toggle span:after,
:root:not([data-theme="dark"]) .site-header .nav-toggle span,
:root:not([data-theme="dark"]) .site-header .nav-toggle span:before,
:root:not([data-theme="dark"]) .site-header .nav-toggle span:after{
  background:#0F172A !important;
}
html[data-theme="dark"] .site-header .nav-toggle{
  color:#FFFFFF !important;
  border-color:#64748B !important;
}
html[data-theme="dark"] .site-header .nav-toggle span,
html[data-theme="dark"] .site-header .nav-toggle span:before,
html[data-theme="dark"] .site-header .nav-toggle span:after{
  background:#FFFFFF !important;
}

/* Open = clean X (two diagonals only; middle bar off) */
html[data-theme="light"] .site-header.is-open .nav-toggle span,
html[data-theme="dark"] .site-header.is-open .nav-toggle span,
:root:not([data-theme="dark"]) .site-header.is-open .nav-toggle span{
  background:transparent !important;
}
html[data-theme="light"] .site-header.is-open .nav-toggle span:before,
html[data-theme="dark"] .site-header.is-open .nav-toggle span:before,
:root:not([data-theme="dark"]) .site-header.is-open .nav-toggle span:before{
  top:0 !important;
  transform:rotate(45deg) !important;
}
html[data-theme="light"] .site-header.is-open .nav-toggle span:after,
html[data-theme="dark"] .site-header.is-open .nav-toggle span:after,
:root:not([data-theme="dark"]) .site-header.is-open .nav-toggle span:after{
  top:0 !important;
  transform:rotate(-45deg) !important;
}
html[data-theme="light"] .site-header.is-open .nav-toggle span:before,
html[data-theme="light"] .site-header.is-open .nav-toggle span:after,
:root:not([data-theme="dark"]) .site-header.is-open .nav-toggle span:before,
:root:not([data-theme="dark"]) .site-header.is-open .nav-toggle span:after{
  background:#0F172A !important;
}
html[data-theme="dark"] .site-header.is-open .nav-toggle span:before,
html[data-theme="dark"] .site-header.is-open .nav-toggle span:after{
  background:#FFFFFF !important;
}

/* —— Open mobile sheet: hard hex, ignore page --text leaks —— */
/* Light sheet */
html[data-theme="light"] .site-header .nav-panel,
:root:not([data-theme="dark"]) .site-header .nav-panel{
  background:#F4F6F8 !important;
  color:#0F172A !important;
  border-top-color:#E2E8F0 !important;
}
html[data-theme="light"] .site-header .nav-panel .sheet-nav a,
:root:not([data-theme="dark"]) .site-header .nav-panel .sheet-nav a{
  color:#0F172A !important;
}
html[data-theme="light"] .site-header .nav-panel .sheet-nav a[aria-current="page"],
:root:not([data-theme="dark"]) .site-header .nav-panel .sheet-nav a[aria-current="page"]{
  color:#65A30D !important; /* readable lime-green on light; keep accent feel */
}
html[data-theme="light"] .site-header .nav-panel .chrome-kicker,
:root:not([data-theme="dark"]) .site-header .nav-panel .chrome-kicker{
  color:#475569 !important;
}
html[data-theme="light"] .site-header .nav-panel .locale-row,
:root:not([data-theme="dark"]) .site-header .nav-panel .locale-row{
  color:#0F172A !important;
  background:#FFFFFF !important;
  border-color:#E2E8F0 !important;
}
html[data-theme="light"] .site-header .nav-panel .theme-seg button,
:root:not([data-theme="dark"]) .site-header .nav-panel .theme-seg button{
  color:#475569 !important;
}
html[data-theme="light"] .site-header .nav-panel .theme-seg button.is-active,
:root:not([data-theme="dark"]) .site-header .nav-panel .theme-seg button.is-active{
  color:#0F172A !important;
}

/* Dark sheet (incl. Auto → dark) */
html[data-theme="dark"] .site-header .nav-panel{
  background:#0A0A0F !important;
  color:#F8FAFC !important;
  border-top-color:#2A2A34 !important;
}
html[data-theme="dark"] .site-header .nav-panel .sheet-nav a{
  color:#F8FAFC !important;
}
html[data-theme="dark"] .site-header .nav-panel .sheet-nav a[aria-current="page"]{
  color:#C8FF3D !important; /* lime OK on dark */
}
html[data-theme="dark"] .site-header .nav-panel .chrome-kicker{
  color:#94A3B8 !important;
}
html[data-theme="dark"] .site-header .nav-panel .locale-row{
  color:#F8FAFC !important;
  background:#14141C !important;
  border-color:#2A2A34 !important;
}
html[data-theme="dark"] .site-header .nav-panel .locale-row[aria-current="page"]{
  border-color:#C8FF3D !important;
}
html[data-theme="dark"] .site-header .nav-panel .theme-seg{
  background:#14141C !important;
  border-color:#2A2A34 !important;
}
html[data-theme="dark"] .site-header .nav-panel .theme-seg button{
  color:#94A3B8 !important;
}
html[data-theme="dark"] .site-header .nav-panel .theme-seg button.is-active{
  background:#C8FF3D !important;
  color:#0F172A !important;
}
html[data-theme="dark"] .site-header .nav-panel .locale-radio{
  border-color:#94A3B8 !important;
}