/* IMA chrome only — header, footer, and the tokens they need.
   Loaded by migrated labs so the shared header/footer render correctly
   without ima.css page-level rules fighting each lab's own layout. */

:root{
  /* --- Navy ------------------------------------------------------------ */
  --navy-900:#0B1F3A;
  --navy-800:#122C4F;
  --navy-700:#16345C;

  /* --- Amber ----------------------------------------------------------- */
  --amber-500:#F5A623;
  --amber-400:#F7B84D;
  --amber-grad:linear-gradient(90deg,#F5A623,#F7B84D);

  /* --- Surfaces -------------------------------------------------------- */
  --page:#EEF1F6;
  --panel:#F7F9FC;
  --white:#FFFFFF;

  /* --- Text ------------------------------------------------------------ */
  --ink:#444444;
  --ink-soft:#555555;
  --ink-softer:#666666;
  --muted:#8892A3;
  --on-navy:#FFFFFF;
  --on-navy-soft:#B9C6DA;

  /* --- Lines ----------------------------------------------------------- */
  --rule:#D8DFEA;
  --rule-strong:#C3CEDE;
  --rule-navy:rgba(185,198,218,.22);

  /* --- Status ---------------------------------------------------------- */
  --ok:#2E7D5B;
  --warn:#B4741A;

  /* --- Type ------------------------------------------------------------ */
  --font:"Helvetica Neue",Helvetica,Arial,"Liberation Sans",sans-serif;
  --lh-body:1.6;

  /* --- Space ----------------------------------------------------------- */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px;
  --s6:32px; --s7:48px; --s8:64px; --s9:96px;

  /* --- Geometry -------------------------------------------------------- */
  --r-sharp:0;
  --r-card:4px;
  --r-pill:999px;

  --shadow-card:0 1px 2px rgba(11,31,58,.06), 0 4px 16px rgba(11,31,58,.06);
  --shadow-lift:0 2px 4px rgba(11,31,58,.08), 0 12px 32px rgba(11,31,58,.10);

  --max:1160px;
  --max-prose:68ch;
}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--navy-900); color:var(--white);
  padding:var(--s3) var(--s5); font-weight:700;
}
.skip-link:focus{ left:0; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:var(--s2);
  padding:14px 26px;
  font-family:inherit; font-size:16px; font-weight:700;
  border:2px solid transparent; border-radius:var(--r-card);
  cursor:pointer; text-align:center;
  transition:background-color .15s ease, border-color .15s ease,
             color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }

.btn--primary{
  background:var(--amber-500); border-color:var(--amber-500); color:var(--navy-900);
}
.btn--primary:hover{ background:var(--amber-400); border-color:var(--amber-400); }

.btn--solid{
  background:var(--navy-900); border-color:var(--navy-900); color:var(--white);
}
.btn--solid:hover{ background:var(--navy-700); border-color:var(--navy-700); }

.btn--outline{
  background:transparent; border-color:var(--rule-strong); color:var(--navy-900);
}
.btn--outline:hover{ border-color:var(--navy-700); background:var(--white); }

.btn--onnavy{
  background:transparent; border-color:rgba(255,255,255,.34); color:var(--white);
}
.btn--onnavy:hover{ border-color:var(--amber-500); color:var(--amber-400); }

.btn--sm{ padding:10px 18px; font-size:14px; }
.btn[aria-disabled="true"]{ opacity:.5; pointer-events:none; }

/* Text link with arrow */
.arrow-link{
  display:inline-flex; align-items:center; gap:var(--s2);
  font-weight:700; color:var(--navy-700);
}
.arrow-link::after{ content:"→"; transition:transform .15s ease; }
.arrow-link:hover{ text-decoration:none; }
.arrow-link:hover::after{ transform:translateX(4px); }

.site-header{
  position:sticky; top:0; z-index:100;
  background:var(--navy-900);
  border-bottom:1px solid var(--rule-navy);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:var(--s5); padding:var(--s4) 0;
}

.brand{ display:flex; align-items:center; gap:var(--s3); flex-shrink:0; }
.brand:hover{ text-decoration:none; }
.brand-mark{ width:42px; height:42px; flex-shrink:0; }
.brand-name{
  color:var(--white); font-size:15px; font-weight:700;
  letter-spacing:.03em; line-height:1.2; display:block;
}
.brand-tagline{
  color:var(--on-navy-soft); font-size:11.5px; letter-spacing:.05em;
  display:block; margin-top:2px;
}

.nav{ display:flex; align-items:center; gap:var(--s1); }
.nav-link{
  padding:9px 14px;
  color:var(--on-navy-soft); font-size:15px; font-weight:500;
  border-bottom:2px solid transparent;
}
.nav-link:hover{ color:var(--white); text-decoration:none; }
.nav-link[aria-current="page"]{ color:var(--white); border-bottom-color:var(--amber-500); }
.nav-cta{ margin-left:var(--s3); }

.nav-toggle{
  display:none;
  width:44px; height:44px; padding:0;
  background:transparent; border:1.5px solid rgba(255,255,255,.3);
  border-radius:var(--r-card); cursor:pointer;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  display:block; width:20px; height:2px; background:var(--white);
  margin-inline:auto; content:""; position:relative;
}
.nav-toggle-bars::before{ top:-6px; }
.nav-toggle-bars::after{ top:4px; }

@media (max-width:900px){
  .nav-toggle{ display:block; flex-shrink:0; }
  .header-inner{ gap:var(--s3); }
  .brand{ min-width:0; }
  .brand-name{ font-size:13px; }
  .brand-tagline{ display:none; }
  .nav{
    display:none; position:absolute; left:0; right:0; top:100%;
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--navy-800);
    border-bottom:3px solid var(--amber-500);
    padding:var(--s3);
  }
  .nav.is-open{ display:flex; }
  .nav-link{ padding:14px; border-bottom:1px solid var(--rule-navy); }
  .nav-link[aria-current="page"]{ border-bottom-color:var(--amber-500); }
  .nav-cta{ margin:var(--s3) 0 0; }
  .site-header{ position:relative; }
}

@media (max-width:430px){
  /* Below this width the full wordmark cannot fit beside the toggle. */
  .brand-name{ font-size:0; }
  .brand-name::after{
    content:"IMA ACADEMY"; font-size:13px; letter-spacing:.06em;
  }
}

.site-footer{
  background:var(--navy-900); color:var(--on-navy-soft);
  padding:var(--s8) 0 var(--s6);
  border-top:4px solid var(--amber-500);
}
.footer-grid{
  display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:var(--s6);
  padding-bottom:var(--s6); border-bottom:1px solid var(--rule-navy);
}
@media (max-width:820px){ .footer-grid{ grid-template-columns:1fr 1fr; gap:var(--s5); } }
@media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }

.footer-brand{ display:flex; align-items:center; gap:var(--s3); margin-bottom:var(--s3); }
.footer-brand svg{ width:38px; height:38px; }
.footer-about{ font-size:14px; color:var(--muted); max-width:38ch; }

.footer-col h4{ color:var(--white); font-size:12px; letter-spacing:.14em;
  text-transform:uppercase; margin-bottom:var(--s3); }
.footer-col a{
  display:block; color:var(--on-navy-soft); font-size:14.5px; padding:5px 0;
}
.footer-col a:hover{ color:var(--amber-400); text-decoration:none; }

.footer-base{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:var(--s3);
  padding-top:var(--s5); font-size:13px; color:var(--muted);
}
.footer-base a{ color:var(--muted); }
.footer-base a:hover{ color:var(--on-navy-soft); }

/* Guard: labs set their own img/svg rules — pin the chrome marks.
   These carry !important because the legacy lab stylesheets do too. */
.site-header *,.site-footer *{ box-sizing:border-box; }
.site-header{ background:#0B1F3A !important; }
.site-header .brand-mark{ width:42px !important; height:42px !important; flex:0 0 auto; }
.site-footer .footer-brand svg{ width:38px !important; height:38px !important; flex:0 0 auto; }
.site-footer{ background:#0B1F3A !important; }
.site-footer .footer-col a{ display:block; }
.site-header .nav-link,.site-footer a,.brand{ text-decoration:none; }
.site-header .brand-name{ color:#fff !important; }