/* ===========================================================================
   CORTEX — Multi-page template layer
   Shared header mega-nav, footer, and reusable page-type patterns
   (page hero, plane pages, sector pages, insights, glossary, contact).
   Loaded after components.css on every interior page.
   =========================================================================== */

/* ---- Mega-nav dropdowns -------------------------------------------------- */
.nav__links { position: relative; }
.has-dropdown { position: relative; }
.has-dropdown > button {
  font: inherit; font-weight: 500; font-size: var(--fs-small);
  color: var(--charcoal); background: none; border: 0; cursor: pointer;
  padding: 0.5rem 0.25rem; border-bottom: 2px solid transparent;
  display: inline-flex; align-items: center; gap: 0.3rem;
}
.has-dropdown > button:hover,
.has-dropdown[aria-expanded="true"] > button { color: var(--navy); border-bottom-color: var(--amber); }
.has-dropdown > button .chev { width: 9px; height: 9px; transition: transform .15s ease; }
.has-dropdown[aria-expanded="true"] > button .chev { transform: rotate(180deg); }

.dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(-6px);
  min-width: 300px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-lg); padding: var(--sp-3);
  opacity: 0; visibility: hidden; transition: opacity .14s ease, transform .14s ease, visibility .14s;
  z-index: 200; list-style: none; margin: 0;
}
.has-dropdown[aria-expanded="true"] .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
/* No-JS / keyboard baseline: hover and focus-within reveal the dropdown without JS */
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown a {
  display: block; text-decoration: none; padding: 0.55rem 0.75rem; border-radius: var(--r-sm);
  color: var(--charcoal); font-size: var(--fs-small); border-bottom: 0;
}
.dropdown a:hover, .dropdown a:focus-visible { background: var(--pale-2, #EAF1FA); color: var(--navy); box-shadow: inset 0 0 0 1px var(--navy); }
.dropdown a .d-sub { display: block; font-size: var(--fs-caption); color: var(--slate); font-weight: 400; margin-top: 1px; }
.dropdown a strong { font-weight: 600; }
.dropdown__head { font-size: var(--fs-kicker); letter-spacing: var(--tracking-kicker); text-transform: uppercase; color: var(--slate); padding: 0.4rem 0.75rem; margin: 0; }
/* Platform dropdown — overview top-card, divider, planes section */
.dropdown a.d-overview {
  background: var(--page); border: 1px solid var(--line);
  padding: 0.7rem 0.85rem; margin-bottom: 0.2rem;
}
.dropdown a.d-overview:hover, .dropdown a.d-overview:focus-visible { background: var(--pale-2, #EAF1FA); border-color: var(--navy); box-shadow: none; }
.dropdown a.d-overview strong { color: var(--navy); }
.dropdown__divider { height: 1px; background: var(--line); margin: 0.5rem 0.4rem; border: 0; }
.dropdown__section { font-size: var(--fs-kicker); letter-spacing: var(--tracking-kicker); text-transform: uppercase; color: var(--slate); padding: 0.25rem 0.85rem 0.4rem; margin: 0; }
.dropdown a.d-plane { padding-block: 0.45rem; }
.dropdown a.d-plane strong { font-weight: 500; }

/* ---- Breadcrumb ---------------------------------------------------------- */
.crumbs { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; font-size: var(--fs-caption); color: var(--slate); margin: 0; padding: 0; list-style: none; }
.crumbs a { color: var(--slate); text-decoration: none; }
.crumbs a:hover { color: var(--navy); text-decoration: underline; }
.crumbs li + li::before { content: "/"; margin-right: 0.4rem; color: var(--line-strong); }

/* ---- Page hero (interior pages) ----------------------------------------- */
.page-hero { background: var(--bg-page); padding-block: var(--sp-7) var(--sp-6); border-bottom: 1px solid var(--line); }
.page-hero .wrap { display: grid; gap: var(--sp-4); }
.page-hero__inner { max-width: 56rem; }
.page-hero h1 { font-size: var(--fs-h1); margin: var(--sp-3) 0 var(--sp-4); }
.page-hero .lead { font-size: var(--fs-lead); }
.page-hero .cta-row { margin-top: var(--sp-5); }
.page-hero--plane { background: var(--navy); border-bottom: 0; }
.page-hero--plane h1, .page-hero--plane .kicker { color: #fff; }
.page-hero--plane .kicker { color: var(--amber); }
.page-hero--plane .lead { color: var(--text-on-invert-muted); }
.page-hero--plane .crumbs, .page-hero--plane .crumbs a { color: var(--text-on-invert-muted); }
.page-hero--plane .crumbs li + li::before { color: rgba(255,255,255,.3); }
/* Buttons on the navy plane hero — match invert-section treatment for contrast */
.page-hero--plane .btn--primary { background: var(--amber); color: var(--navy-900); border-color: var(--amber); }
.page-hero--plane .btn--primary:hover { background: #f7be57; color: var(--navy-900); }
.page-hero--plane .btn--secondary { color: #fff; border-color: rgba(255,255,255,.4); }
.page-hero--plane .btn--secondary:hover { border-color: #fff; background: rgba(255,255,255,.06); color: #fff; }
.page-hero--plane .tlink { color: var(--amber); }

/* plane tag */
.plane-tag { display: inline-flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-caption); font-weight: 600; color: var(--amber); letter-spacing: .04em; }
.plane-tag .sq { width: 10px; height: 10px; border-radius: 2px; background: var(--amber); }

/* ---- Question cards (named-plane "what it helps consider") --------------- */
.qcards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: var(--sp-4); counter-reset: q; }
.qcard { background: var(--card-bg); border: var(--card-border); border-radius: var(--card-radius); box-shadow: var(--card-shadow); padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-2); }
.qcard { background: var(--card-bg); border: var(--card-border); border-left: 3px solid var(--amber); border-radius: var(--card-radius); box-shadow: var(--card-shadow); padding: var(--sp-5); display: flex; flex-direction: column; justify-content: center; min-height: 116px; gap: var(--sp-2); }
.qcard p { margin: 0; font-size: var(--fs-small); color: var(--text-body); }

/* ---- Plane relationship grid -------------------------------------------- */
.planes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.plane-card { display: flex; flex-direction: column; gap: var(--sp-2); padding: var(--sp-5); border: var(--card-border); border-radius: var(--card-radius); background: var(--card-bg); box-shadow: var(--card-shadow); text-decoration: none; color: inherit; }
.plane-card:hover { border-color: var(--navy); box-shadow: var(--sh-lg); }
.plane-card__name { font-weight: 600; color: var(--navy); font-size: var(--fs-h4); }
.plane-card__role { font-size: var(--fs-caption); color: var(--amber-warm); font-weight: 600; letter-spacing: .03em; text-transform: uppercase; }
.plane-card p { margin: 0; font-size: var(--fs-small); color: var(--text-muted); }
.plane-card .tlink { margin-top: auto; }

/* ---- Generic feature list grid ------------------------------------------ */
.featrow { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.feat { padding: var(--sp-5); border-left: 2px solid var(--amber); background: var(--bg-surface); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
:root[data-direction="boardroom"] .feat { background: var(--card-bg); box-shadow: var(--card-shadow); border-radius: var(--r-md); border-left: 3px solid var(--amber); }
.feat h3 { font-size: var(--fs-h4); margin: 0 0 var(--sp-2); }
.feat p { margin: 0; font-size: var(--fs-small); color: var(--text-muted); }

/* bullet list, serious */
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-3); }
.checks li { display: flex; gap: var(--sp-3); align-items: flex-start; font-size: var(--fs-body); }
.checks li::before { content: ""; flex: none; width: 8px; height: 8px; margin-top: 0.55rem; background: var(--amber); border-radius: 2px; }
.checks--two { grid-template-columns: 1fr 1fr; }

/* ---- Disclosure note (calm) --------------------------------------------- */
.note {
  border: 1px solid var(--line); border-left: 3px solid var(--slate);
  background: var(--bg-page); border-radius: var(--r-sm);
  padding: var(--sp-4) var(--sp-5); font-size: var(--fs-small); color: var(--text-muted);
}
.section--invert .note { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.16); border-left-color: var(--amber); color: var(--text-on-invert-muted); }

/* ---- Sector page ---------------------------------------------------------- */
.relevance { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.relevance .feat { background: var(--card-bg); border: var(--card-border); box-shadow: var(--card-shadow); border-left: 3px solid var(--amber); border-radius: var(--r-md); padding: var(--sp-5); }

/* ---- Insights / briefing library ----------------------------------------- */
.filters { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-bottom: var(--sp-6); }
.filter {
  font: inherit; font-size: var(--fs-small); font-weight: 600; cursor: pointer;
  background: transparent; border: 1px solid var(--line-strong); color: var(--slate-600);
  border-radius: var(--r-pill); padding: 0.45rem 1rem;
}
.filter[aria-pressed="true"] { background: var(--navy); color: #fff; border-color: var(--navy); }
.filter:hover { border-color: var(--navy); color: var(--navy); }
.filter[aria-pressed="true"]:hover { color: #fff; }

.brief-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.brief-grid--feature { grid-template-columns: 2fr 1fr; }
.brief-feature { grid-column: 1 / -1; display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--sp-6); align-items: center; background: var(--navy); color: #fff; border-radius: var(--r-md); padding: var(--sp-6); }
.brief-feature h3 { color: #fff; font-size: var(--fs-h2); }
.brief-feature p { color: var(--text-on-invert-muted); }
.brief-feature .tag { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.2); color: #EAF1FA; }

/* ---- Glossary ------------------------------------------------------------- */
.glossary-layout { display: grid; grid-template-columns: 220px 1fr; gap: var(--sp-7); align-items: start; }
.glossary-side { position: sticky; top: 96px; display: flex; flex-direction: column; gap: var(--sp-4); }
.gsearch { width: 100%; font: inherit; font-size: var(--fs-small); padding: 0.7rem 0.9rem; border: 1px solid var(--line-strong); border-radius: var(--r-sm); background: #fff; }
.alpha { display: flex; flex-wrap: wrap; gap: 2px; }
.alpha a { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--slate); text-decoration: none; padding: 0.2rem 0.4rem; border-radius: var(--r-sm); }
.alpha a:hover { background: var(--navy); color: #fff; }
.gfilters { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.term { padding: var(--sp-5) 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr; gap: var(--sp-2); scroll-margin-top: 96px; }
.term:first-child { border-top: 0; }
.term h3 { margin: 0; font-size: var(--fs-h3); color: var(--navy); }
.term__tag { font-size: var(--fs-caption); font-weight: 600; color: var(--amber-warm); text-transform: uppercase; letter-spacing: .04em; }
.term p { margin: 0; max-width: 64ch; }
.term__rel { font-size: var(--fs-caption); color: var(--slate); }
.term__rel a { color: var(--navy); text-decoration: none; }
.term__rel a:hover { text-decoration: underline; }
.term[hidden] { display: none; }
.ghead { font-family: var(--font-mono); font-size: 1.4rem; color: var(--slate); margin: var(--sp-6) 0 0; }

/* ---- Contact ------------------------------------------------------------- */
.contact-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--sp-7); align-items: start; }
.form-field { display: flex; flex-direction: column; gap: var(--sp-2); margin-bottom: var(--sp-5); }
.form-field label { font-weight: 600; font-size: var(--fs-small); color: var(--navy); }
.form-field input, .form-field select, .form-field textarea {
  font: inherit; font-size: var(--fs-small); padding: 0.75rem 0.9rem;
  border: 1px solid var(--line-strong); border-radius: var(--r-sm); background: #fff; color: var(--ink);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.form-field .hint { font-size: var(--fs-caption); color: var(--slate); font-weight: 400; }
.contact-aside { background: var(--bg-page); border: 1px solid var(--line); border-radius: var(--r-md); padding: var(--sp-6); }
.contact-aside h3 { font-size: var(--fs-h4); }
.contact-aside ul { margin: 0; padding-left: 1.1rem; display: grid; gap: var(--sp-2); font-size: var(--fs-small); color: var(--text-muted); }
/* Contact form validation states */
.error-summary { border: 1px solid var(--warn); border-left: 3px solid var(--warn); background: #FDF3F3; border-radius: var(--r-sm); padding: var(--sp-4) var(--sp-5); margin-bottom: var(--sp-5); }
.error-summary h2 { font-size: var(--fs-h4); margin: 0 0 var(--sp-2); color: var(--red-ink); }
.error-summary ul { margin: 0; padding-left: 1.1rem; }
.error-summary a { color: var(--red-ink); font-weight: 600; }
.form-field .field-error { color: var(--red-ink); font-size: var(--fs-caption); font-weight: 600; }
.form-field input[aria-invalid="true"], .form-field select[aria-invalid="true"], .form-field textarea[aria-invalid="true"] { border-color: var(--red-ink); box-shadow: 0 0 0 1px var(--red-ink); }

/* ---- Timeline (about) ---------------------------------------------------- */
.timeline { display: grid; gap: 0; border-left: 2px solid var(--line-strong); margin-left: 6px; }
.timeline li { position: relative; padding: 0 0 var(--sp-6) var(--sp-6); list-style: none; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--amber); border: 2px solid #fff; }
.timeline h3 { font-size: var(--fs-h4); margin: 0 0 var(--sp-1); }
.timeline p { margin: 0; font-size: var(--fs-small); color: var(--text-muted); }

/* ---- Leadership cards ---------------------------------------------------- */
.lead-card { background: var(--card-bg); border: var(--card-border); box-shadow: var(--card-shadow); border-radius: var(--card-radius); overflow: hidden; }
.lead-card__portrait { height: 150px; background: var(--pale); display: flex; align-items: center; justify-content: center; }
.lead-card__body { padding: var(--sp-5); }
.lead-card h3 { margin: 0 0 2px; font-size: var(--fs-h4); }
.lead-card .role { font-size: var(--fs-caption); color: var(--amber-warm); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; margin-bottom: var(--sp-3); }
.lead-card p { margin: 0; font-size: var(--fs-small); color: var(--text-muted); }

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 960px) {
  .glossary-layout { grid-template-columns: 1fr; }
  .glossary-side { position: static; }
  .contact-layout { grid-template-columns: 1fr; }
  .planes-grid, .featrow { grid-template-columns: 1fr 1fr; }
  .brief-grid { grid-template-columns: 1fr 1fr; }
  .brief-feature { grid-template-columns: 1fr; }
}
@media (max-width: 1024px) {
  .nav__links .has-dropdown { width: 100%; }
  /* Mobile mega-nav: show groups + their items stacked when menu open */
  .nav__links--open .has-dropdown { display: block; border-bottom: 1px solid var(--line); }
  .nav__links--open .has-dropdown > button { width: 100%; justify-content: space-between; padding: 0.85rem 0; border-bottom: 0; }
  .nav__links--open .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible;
    box-shadow: none; border: 0; padding: 0 0 var(--sp-3) var(--sp-3); min-width: 0;
  }
  .nav__links--open .dropdown__head { display: none; }
  .nav__links--open .has-dropdown[aria-expanded="false"] .dropdown { display: none; }
  /* The expanded/hover/focus state rules above carry (0,3,0) specificity and
     re-assert transform: translateX(-50%), which shoves the now full-width
     static sub-menu half off the left edge. Reset it at (0,4,0) so the
     stacked mobile sub-items sit flush. */
  .nav__links--open .has-dropdown[aria-expanded="true"] .dropdown,
  .nav__links--open .has-dropdown:hover .dropdown,
  .nav__links--open .has-dropdown:focus-within .dropdown { transform: none; }
}
@media (max-width: 760px) {
  .planes-grid, .featrow, .relevance, .brief-grid, .checks--two { grid-template-columns: 1fr; }
}


/* ---- Six-plane platform relationship strip (G08) ------------------------ */
.plane-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--sp-3); margin: var(--sp-2) 0 var(--sp-5); }
.plane-strip__item { display: flex; flex-direction: column; gap: 4px; padding: var(--sp-4) var(--sp-3); border: 1px solid var(--line); border-radius: var(--r-md); background: var(--card-bg); text-decoration: none; color: inherit; text-align: left; }
.plane-strip__item:hover { border-color: var(--navy); }
.plane-strip__role { font-size: var(--fs-caption); color: var(--slate); }
.plane-strip__name { font-weight: 600; color: var(--navy); font-size: var(--fs-small); }
.plane-strip__item[aria-current="true"] { border-color: var(--amber); border-left-width: 3px; background: #fff; box-shadow: var(--sh-sm); }
.plane-strip__item[aria-current="true"] .plane-strip__name { color: var(--navy); }
.plane-strip__item[aria-current="true"] .plane-strip__role { color: var(--amber-warm); font-weight: 600; }
/* Constituent platform frame around the plane strip (W7 addendum 3.1) */
.plane-frame { border: 1.5px solid var(--navy); border-radius: var(--r-lg); padding: var(--sp-4) var(--sp-4) var(--sp-3); margin: var(--sp-2) 0 var(--sp-5); background: var(--bg-page); }
.plane-frame__label { display: flex; align-items: center; gap: var(--sp-3); font-size: var(--fs-caption); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--navy); margin: 0 0 var(--sp-3); }
.plane-frame__label::after { content: ""; flex: 1; height: 1px; background: var(--line-strong); }
.plane-frame__sub { color: var(--slate); font-weight: 600; }
.plane-frame .plane-strip { margin: 0; }

@media (max-width: 900px){ .plane-strip { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px){ .plane-strip { grid-template-columns: repeat(2, 1fr); } }


/* ---- G08 — Cortex Six-Plane Platform Frame Model (Route D: foundation · core · edge) ----
   Lifted verbatim from the approved exploration board; do not reinterpret. */
.pl-role{font-size:.72rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--slate);}
.pl-name{font-weight:600;color:var(--navy);}
.pl-mean{font-size:.86rem;color:var(--slate-600);line-height:1.45;}
.pframe{border:1.5px solid var(--navy);border-radius:14px;padding:1.1rem;background:#fff;display:grid;gap:.8rem;}
.pframe__top{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--slate);text-align:center;}
.zoneband{border:1px dashed var(--pale-line);border-radius:10px;padding:.85rem;background:var(--page);}
.zoneband__h{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--slate);margin:0 0 .6rem;text-align:center;}
.zoneband__row{display:grid;gap:.7rem;}
.zoneband--core .zoneband__row{grid-template-columns:repeat(3,1fr);}
.zoneband--edge .zoneband__row{grid-template-columns:repeat(2,1fr);}
.zbox{background:#fff;border:1px solid var(--pale-line);border-radius:8px;padding:.75rem .9rem;display:grid;gap:2px;border-bottom:3px solid var(--pale-line);}
.zbox--found{background:var(--navy);border-color:var(--navy);}
.zbox--found .pl-role{color:#A9BCD4;}
.zbox--found .pl-name{color:#fff;}
.zbox--found .pl-mean{color:#cdd9e8;}
.zbox[aria-current="true"]{border-color:var(--navy);border-bottom:3px solid var(--amber);box-shadow:0 2px 10px rgba(15,39,71,.12);}
.zbox--found[aria-current="true"]{border-bottom:3px solid var(--amber);box-shadow:0 2px 10px rgba(15,39,71,.12);}
.zbox[aria-current="true"] .pl-role{color:var(--amber-warm);}
.zbox--found[aria-current="true"] .pl-role{color:var(--amber);}
@media(max-width:680px){
  .zoneband--core .zoneband__row,.zoneband--edge .zoneband__row{grid-template-columns:1fr;}
}