/* ==========================================================================
   Site header: mega-menu navigation, page search, mobile dialog.
   Ported from the homepage (index.html) so every page carries the same top
   menu. Values are the homepage's final cascade; colours come from tokens.css.
   Everything is scoped to .site-header / .mobile-dialog so the page-level
   .btn-primary, a and label rules in tokens.css cannot leak in.
   Behaviour lives in assets/js/site-header.js.
   ========================================================================== */
:root{
  --header-height:64px;
  --site-max:1512px;
  --page-gutter:clamp(18px,3vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
}
.sr-only{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
body.modal-open{overflow:hidden}

.site-header{
  position:sticky;top:0;z-index:100;line-height:1.55;
  background:rgba(var(--ivory-rgb),.9);-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);
  border-bottom:1px solid rgba(var(--navy-rgb),.08);
}
.site-header [hidden],.nav-scrim[hidden]{display:none!important}
.site-header a,.mobile-dialog a{color:inherit;text-decoration:none}
:where(.site-header,.mobile-dialog) button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}
.site-header .icon,.mobile-dialog .icon{
  width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.65;
  stroke-linecap:round;stroke-linejoin:round;flex:none;display:block;
}
.header-in{
  width:min(var(--site-max),calc(100% - var(--page-gutter) * 2));max-width:var(--site-max);
  height:var(--header-height);margin-inline:auto;
  display:flex;align-items:center;gap:26px;
}

.site-header .brand{display:inline-flex;align-items:center;gap:9px;flex:none}
.site-header .brand-mark{width:36px;height:36px;flex:none}
.site-header .brand-mark img{width:100%;height:100%;object-fit:contain}
.site-header .brand-name{font:700 17px/1.05 var(--f-display);letter-spacing:-.7px;white-space:nowrap}
.site-header .brand-name span{font-weight:500}
/* Tool pages only: the tool's name beside the mark, once the row has room
   for it beside the Home Visiting Tool pill (measured: 1320px+). */
.site-header .tool-name{
  display:none;font:600 13px/1.2 var(--f-display);letter-spacing:-.2px;white-space:nowrap;
  padding-left:14px;border-left:1px solid rgba(var(--navy-rgb),.16);
}
@media(min-width:1360px){.site-header .tool-name{display:inline}}

/* Home Visiting Tool: a dedicated pill ahead of the menu triggers, and the
   first item in the mobile menu. Blue text on the header glass is 5.3:1;
   white on the filled (hover / current page) state is 5.9:1. */
.site-header .nav-feature{
  display:inline-flex;align-items:center;min-height:32px;margin-right:4px;padding:6px 13px;
  border:1px solid var(--harbor);border-radius:100px;color:var(--harbor);background:transparent;
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;text-decoration:none;
  transition:background-color .22s ease,color .22s ease;
}
.site-header .nav-feature:hover,.site-header .nav-feature[aria-current="page"]{background:var(--harbor);color:#fff}
.mobile-dialog .mobile-feature{
  display:flex;justify-content:space-between;align-items:center;gap:12px;margin:4px 0 12px;padding:14px 18px;
  border-radius:16px;background:var(--harbor);color:#fff;font:600 20px/1.3 var(--f-display);letter-spacing:-.5px;
}

.site-nav{display:flex;justify-content:center;align-items:center;flex:1;gap:clamp(16px,2.4vw,32px);height:100%}
.nav-trigger{
  text-decoration:none;
  position:relative;height:auto;padding:9px 2px;border:0;border-radius:7px;background:none;
  font-size:16px;white-space:nowrap;
}
.nav-trigger::after{
  content:'';position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--harbor);
  transform:scaleX(0);transition:transform .2s;
}
.nav-trigger[aria-expanded="true"]::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:13px}
.site-header .icon-button,.mobile-dialog .icon-button{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;padding:0;border:0;border-radius:50%;background:transparent;
}
.site-header .icon-button:hover,.mobile-dialog .icon-button:hover{background:rgba(var(--navy-rgb),.06)}


.mobile-menu-button{display:none!important}

/* Buttons: the homepage's navy pill, restated here at header specificity. */
.site-header .btn,.mobile-dialog .btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 21px;border:1px solid var(--navy);border-radius:100px;
  font-family:var(--f-body);font-size:14px;font-weight:500;line-height:1.3;
  white-space:normal;text-align:center;text-decoration:none;
  transition:transform .22s var(--ease),background-color .22s ease,border-color .22s ease,color .22s ease,box-shadow .22s ease;
}
.site-header .btn-primary,.mobile-dialog .btn-primary{background:var(--navy);color:var(--paper)}
.mobile-dialog .btn-secondary{background:transparent;color:var(--navy)}
.site-header .header-cta{font-size:14px;padding:8px 14px;min-height:34px}
/* tokens.css turns .btn-primary blue on hover; the header keeps the navy pill. */
.site-header .btn-primary:hover,.mobile-dialog .btn-primary:hover{background:var(--navy);color:var(--paper);transform:none;box-shadow:none}
.mobile-dialog .btn-secondary:hover{background:transparent;color:var(--navy);transform:none}
@media(hover:hover) and (pointer:fine){
  .site-header .btn:hover,.mobile-dialog .btn:hover{
    transform:translateY(-1px) scale(1.035);box-shadow:0 8px 18px rgba(var(--navy-rgb),.14);
    background:#fff;color:var(--navy);border-color:var(--navy);
  }
  .nav-trigger:hover{color:var(--harbor)}
}
.site-header button,.site-header .btn,.mobile-dialog button,.mobile-dialog .btn{outline:2px solid transparent;outline-offset:3px}
.site-header button:not(:disabled):focus-visible,.site-header a:focus-visible,
.mobile-dialog button:not(:disabled):focus-visible,.mobile-dialog a:focus-visible,
.mobile-dialog summary:focus-visible{outline:3px solid var(--harbor);outline-offset:4px;border-radius:7px}
.site-header .btn:focus-visible,.mobile-dialog .btn:focus-visible{
  border-radius:100px;transform:translateY(-1px) scale(1.025);box-shadow:0 8px 18px rgba(var(--navy-rgb),.14);
  background:#fff;color:var(--navy);border-color:var(--navy);
}
.site-header .btn:active,.mobile-dialog .btn:active{transform:translateY(0) scale(.99)}
.nav-trigger,.site-header .icon-button{
  transition:background-color .22s ease,border-color .22s ease,color .22s ease,outline-color .22s ease;
}

/* Mega panels drop from the header's bottom edge. */
.mega-panel{
  position:absolute;top:100%;left:0;width:100%;
  max-height:calc(100svh - var(--header-height));overflow:auto;
  background:var(--ivory);box-shadow:0 25px 45px rgba(var(--navy-rgb),.09);
  animation:nav-in .23s var(--ease);
}
.mega-inner{
  width:min(var(--site-max),calc(100% - var(--page-gutter) * 2));max-width:var(--site-max);margin-inline:auto;
  padding:35px 0 48px;display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:65px;
}
.mega-col small{display:block;margin-bottom:15px;font-size:12px;color:var(--slate)}
.mega-col a{display:block;margin:10px 0;font-size:14px;line-height:1.4}
.site-header .mega-col a:hover,.site-header .search-results a:hover{color:var(--harbor)}
.mega-col--large a{font:600 clamp(20px,2vw,28px)/1.25 var(--f-display);letter-spacing:-.04em;margin:12px 0}
.mega-col p{font-size:14px;color:var(--slate);max-width:26ch}
.nav-scrim{
  position:fixed;inset:var(--header-height) 0 0;z-index:90;
  background:rgba(var(--navy-rgb),.13);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);
}
.search-inner{display:block;padding-block:36px 40px}
.search-box{display:flex;align-items:center;gap:16px;font-size:inherit;font-weight:inherit}
.search-box .icon{width:27px;height:27px}
.site-header .search-box input{
  width:100%;min-height:0;padding:10px 0;border:0;border-radius:0;outline:none;background:transparent;box-shadow:none;
  font:600 32px var(--f-display);letter-spacing:-.04em;color:var(--navy);
}
.search-results{display:grid;grid-template-columns:1fr 1fr;gap:4px 30px;margin-top:20px;max-width:740px}
.search-results a{padding:9px 0;font-size:14px}
.search-label{font-size:12px;color:var(--slate);margin-top:18px}
@keyframes nav-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* Mobile navigation: a full-screen native dialog. */
.mobile-dialog{
  width:100%;max-width:100%;height:100%;max-height:100%;margin:0;padding:0;border:0;
  color:var(--navy);background:var(--ivory);line-height:1.55;
}
.mobile-dialog::backdrop{background:rgba(var(--navy-rgb),.3);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}
.mobile-top{
  height:65px;padding:0 24px;display:flex;justify-content:space-between;align-items:center;
  border-bottom:1px solid var(--line-soft);
}
.mobile-top .brand-name{font:700 17px/1.05 var(--f-display);letter-spacing:-.7px}
.mobile-top .brand-name span{font-weight:500}
.mobile-nav{padding:20px 28px 40px}
.mobile-nav details{border-bottom:1px solid var(--line-soft);padding:14px 0}
.mobile-nav summary{
  display:flex;justify-content:space-between;gap:12px;cursor:pointer;list-style:none;
  font:600 27px/1.3 var(--f-display);letter-spacing:-1px;
}
.mobile-nav summary::after{content:'+';font-weight:400}
.mobile-nav details[open] summary::after{content:'−'}
.mobile-subnav{display:grid;gap:13px;padding:21px 8px 9px}
.mobile-subnav a{font-size:15px}
.mobile-nav .button-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-start;gap:12px;margin-top:28px}


/* Responsive steps, in the homepage's order. */
@media(max-width:1180px){
  .header-in{gap:20px}
  .site-nav{gap:19px}

  .site-header .brand-name{font-size:15px}
  .header-actions{gap:6px}
}
@media(max-width:1100px){
  .site-header .site-nav{gap:15px}
  .site-header .header-in{gap:15px}
}
@media(max-width:980px){
  .site-nav,.site-header .header-cta{display:none}
  .header-in{justify-content:space-between}
  .header-actions{gap:10px}
  .mobile-menu-button{display:inline-flex!important}

  .site-header .brand-name{font-size:17px}
  .mega-inner{gap:30px}
  .search-inner{padding-inline:5px}
}
@media(max-width:700px){
  .site-header .search-box input{font-size:26px}
  .search-results{grid-template-columns:1fr}
  .search-results a{font-size:15px;padding-block:7px}
}
@media(max-width:600px){
  .site-header .header-in{gap:10px}
  .site-header .header-actions{gap:3px}
  .site-header .brand{gap:6px}
  .site-header .brand-name{font-size:14px}
  .site-header .brand-mark{width:32px;height:32px}
  .site-header .header-actions .icon-button{width:32px;height:38px}


}
@media(max-width:390px){
  .site-header .header-actions{gap:3px}

}
@media(max-width:359px){.site-header .brand-name{display:none}}
@media(prefers-reduced-motion:reduce){
  .mega-panel{animation:none}
  .nav-trigger::after,.site-header .btn,.mobile-dialog .btn{transition:none}
  .site-header .btn:hover,.site-header .btn:focus-visible,.mobile-dialog .btn:hover,.mobile-dialog .btn:focus-visible{transform:none;box-shadow:none}
}
@media print{.site-header,.nav-scrim,.mobile-dialog{display:none!important}}

@media(max-width:760px){.site-header .brand-mark{width:42px;height:42px}.site-header .brand-mark img{width:42px;height:42px}}
@media(max-width:760px){.site-header.unified-header .brand-mark,.site-header.unified-header .brand-mark img{width:42px;height:42px}}