/* ═══════════════════════════════════════════════════════════════
   AIMT Public Navigation — canonical shared component
   ---------------------------------------------------------------
   Single source of truth for the public/supporting-site header.
   Every value below is copied verbatim from the homepage's nav
   implementation (index.html, the approved canonical reference) —
   nothing here is a new interpretation. If the homepage nav ever
   needs to change, change it here first, then let every page pick
   up the update automatically.

   Structure (brand always the same; right side is page-specific —
   "same design, different actions"):

     <nav class="aimt-public-nav aimt-public-nav--fixed">
       <a href="index.html" class="aimt-public-nav-mark">…orbital svg…</a>
       <a href="index.html" class="aimt-public-nav-wordmark">
         <span class="aimt-public-nav-name">AIMT</span>
       </a>
       <div class="aimt-public-nav-right">
         <div class="aimt-public-nav-links">
           <a class="aimt-public-nav-link" href="…">…</a>
         </div>
         <span class="aimt-public-nav-sep"></span>
         <a class="aimt-public-nav-link" href="…">…</a>
         <a/button class="aimt-public-nav-cta">…</a>
         <button class="aimt-public-nav-hamburger" id="…" aria-expanded="false" aria-controls="…">
           <span class="aimt-public-nav-hamburger-line"></span>
           <span class="aimt-public-nav-hamburger-line"></span>
           <span class="aimt-public-nav-hamburger-line"></span>
         </button>
       </div>
     </nav>
     <div class="aimt-public-nav-mobile-menu" id="…" aria-hidden="true">
       <a class="aimt-public-nav-mobile-link" href="…">…</a>
     </div>

   Funnel pages (e.g. the Head Spa sales page): identical brand +
   shell, .aimt-public-nav-right holding ONLY a single CTA — no
   .aimt-public-nav-links, no separator, no hamburger. The component
   never changes; only what's inside -right does.

   Positioning is intentionally NOT baked into the base class — pick
   the modifier that matches how the page already handles its top
   offset, so migrating a page's nav never requires also re-padding
   its content (out of scope for a nav-only pass):
     --fixed  : position:fixed, needs `padding-top: var(--aimt-nav-height)`
                (or equivalent) already present on the page — used by
                index/courses/head-spa-readiness/the sales funnel.
     --sticky : position:sticky; top:0 — visually identical at rest
                (page loads scrolled to top) but needs no content
                offset — used by the legal/utility/account pages that
                previously had their own unfixed header.

   Depends on font tokens in assets/css/aimt-design-system.css — load
   that file first. Mobile menu behavior lives in
   assets/js/aimt-public-nav.js — one script, every page that has a
   .aimt-public-nav-hamburger.
   ═══════════════════════════════════════════════════════════════ */

.aimt-public-nav {
  left: 0; right: 0; z-index: 200;
  height: var(--aimt-nav-height, 56px);
  background: rgba(26,24,20,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 0.5px solid rgba(255,255,255,0.07);
  display: flex; align-items: center; padding: 0 1.5rem; gap: 12px;
}
.aimt-public-nav--fixed { position: fixed; top: 0; }
.aimt-public-nav--sticky { position: sticky; top: 0; }

.aimt-public-nav-mark { width: 28px; height: 28px; color: rgba(255,255,255,0.75); flex-shrink: 0; display: flex; text-decoration: none; }
.aimt-public-nav-mark svg { width: 28px; height: 28px; }
.aimt-public-nav-wordmark { display: flex; flex-direction: column; gap: 1px; text-decoration: none; }
.aimt-public-nav-name { font-family: var(--aimt-font-mont); font-size: 0.68rem; font-weight: 700; color: white; line-height: 1.1; letter-spacing: 0.38em; text-transform: uppercase; }

.aimt-public-nav-right { margin-left: auto; display: flex; align-items: center; gap: var(--aimt-space-lg, 1.25rem); }
.aimt-public-nav-links { display: flex; align-items: center; gap: var(--aimt-space-lg, 1.25rem); }
.aimt-public-nav-link { font-family: var(--aimt-font-sans); font-size: 0.74rem; font-weight: 500; color: rgba(255,255,255,0.6); text-decoration: none; transition: color 0.2s; white-space: nowrap; }
.aimt-public-nav-link:hover, .aimt-public-nav-link:focus-visible { color: white; }
.aimt-public-nav-sep { width: 0.5px; height: 14px; background: var(--aimt-border-default, rgba(255,255,255,0.07)); flex-shrink: 0; }

.aimt-public-nav-cta {
  background: white; color: #262626; border: 0.5px solid rgba(255,255,255,0.16);
  border-radius: 980px; padding: 0.86rem 1.15rem;
  font-family: var(--aimt-font-mont); font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
  transition: all 0.2s; text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center;
}
.aimt-public-nav-cta:hover, .aimt-public-nav-cta:focus-visible { background: rgba(255,255,255,0.88); transform: translateY(-1px); }

.aimt-public-nav-hamburger { display: none; }
.aimt-public-nav-mobile-menu { display: none; }

@media (max-width: 700px) {
  .aimt-public-nav { padding: 0 1rem; }
  .aimt-public-nav-links { display: none; }
  .aimt-public-nav-sep { display: none; }
  .aimt-public-nav-right > .aimt-public-nav-link { display: none; }
  .aimt-public-nav-cta { font-size: 0.62rem; padding: 0.7rem 1.15rem; white-space: nowrap; position: relative; }
  .aimt-public-nav-cta::after { content: ''; position: absolute; left: 0; right: 0; top: -6px; bottom: -6px; }
  .aimt-public-nav-hamburger {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
    width: 44px; height: 44px; flex-shrink: 0; margin-left: 12px;
    background: none; border: none; padding: 0; cursor: pointer;
  }
  .aimt-public-nav-hamburger-line { width: 20px; height: 1px; background: #faf8f5; transition: transform 0.2s ease, opacity 0.2s ease; }
  .aimt-public-nav-hamburger[aria-expanded="true"] .aimt-public-nav-hamburger-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .aimt-public-nav-hamburger[aria-expanded="true"] .aimt-public-nav-hamburger-line:nth-child(2) { opacity: 0; }
  .aimt-public-nav-hamburger[aria-expanded="true"] .aimt-public-nav-hamburger-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .aimt-public-nav-mobile-menu {
    display: block;
    position: fixed; top: var(--aimt-nav-height, 56px); left: 0; right: 0; z-index: 199;
    background: rgba(26,24,20,0.98);
    border-bottom: 0.5px solid rgba(255,255,255,0.07);
    max-height: 0; overflow: hidden; visibility: hidden;
    transition: max-height 0.2s ease, visibility 0s linear 0.2s;
  }
  .aimt-public-nav-mobile-menu[aria-hidden="false"] { max-height: 400px; visibility: visible; transition: max-height 0.2s ease, visibility 0s linear 0s; }
  .aimt-public-nav-mobile-link {
    display: flex; align-items: center; min-height: 44px; padding: 0 1.4rem;
    font-family: var(--aimt-font-sans); font-size: 0.9rem; font-weight: 500;
    color: rgba(255,255,255,0.75); text-decoration: none;
    border-bottom: 0.5px solid rgba(255,255,255,0.06);
  }
  .aimt-public-nav-mobile-link:last-child { border-bottom: none; }
}
@media (max-width: 480px) {
  .aimt-public-nav { padding: 0 0.85rem; }
}
@media (prefers-reduced-motion: reduce) {
  .aimt-public-nav-mobile-menu, .aimt-public-nav-hamburger-line { transition: none; }
}

/* ─────────────────────────────────────────────────────────────
   Authenticated account variant — same canonical shell, -right
   holding a signed-in account control instead of marketing links/
   CTA (My AIMT today; any future account-gated page reuses this
   rather than inventing another header). Desktop shows email +
   Sign out inline; at the same 700px breakpoint as the public nav's
   hamburger, that swaps for a compact account-menu button so the
   header never crowds on a phone. ───────────────────────────── */
.aimt-public-nav-account { display: flex; align-items: center; gap: 0.9rem; }
.aimt-public-nav-account-email { font-family: var(--aimt-font-sans); font-size: 0.78rem; color: rgba(255,255,255,0.5); }
.aimt-public-nav-signout {
  background: none; border: none; cursor: pointer; font-family: var(--aimt-font-sans);
  font-size: 0.78rem; color: rgba(255,255,255,0.5); letter-spacing: 0.02em; padding: 0;
}
.aimt-public-nav-signout:hover, .aimt-public-nav-signout:focus-visible { color: #fff; }

.aimt-public-nav-mobile-account { display: none; position: relative; }
.aimt-public-nav-account-btn {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.06); border: 0.5px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.75); cursor: pointer;
}
.aimt-public-nav-account-panel {
  display: none; position: absolute; top: calc(100% + 10px); right: 0; min-width: 220px;
  background: #201d18; border: 0.5px solid rgba(255,255,255,0.1);
  border-radius: var(--aimt-radius-md, 12px); box-shadow: 0 16px 42px rgba(0,0,0,0.4);
  padding: 0.9rem 1rem; z-index: 220;
}
.aimt-public-nav-account-panel.open { display: block; }
.aimt-public-nav-account-panel-email { font-size: 0.8rem; color: rgba(255,255,255,0.7); word-break: break-all; margin-bottom: 0.85rem; padding-bottom: 0.85rem; border-bottom: 0.5px solid rgba(255,255,255,0.08); }
.aimt-public-nav-account-panel a, .aimt-public-nav-account-panel button {
  display: block; width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  font-family: var(--aimt-font-sans); font-size: 0.86rem; color: rgba(255,255,255,0.75);
  text-decoration: none; padding: 0.6rem 0;
}
.aimt-public-nav-account-panel a:hover, .aimt-public-nav-account-panel button:hover { color: #fff; }

@media (max-width: 700px) {
  .aimt-public-nav-account { display: none; }
  .aimt-public-nav-mobile-account { display: block; }
}