/* ============================================================
   AWMedia shared header / nav -- ONE source for the landing and
   every subpage (same class-based markup everywhere).
   Desktop (>=900px): logo + inline links, hover dropdown for the
   calculators. Mobile (<=899px): logo + hamburger in the right
   corner -> expandable panel with the whole navigation; the
   calculators group expands inside the panel (nav.js).
   Wire-up per page:
     <link rel="stylesheet" href="/assets/nav.css">
     <script src="/assets/nav.js" defer></script>
   No !important, no inline styles.
   ============================================================ */
.site-header,.site-header *{box-sizing:border-box}
.site-header{position:relative;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px 20px;flex-wrap:wrap;max-width:1200px;margin:0 auto;padding:10px 24px}
.logo-link{display:inline-flex;align-items:center}
.logo-img{height:60px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.nav-link{color:rgba(255,255,255,.65);font-size:.92rem;font-weight:500;text-decoration:none}
.nav-link:hover{color:#FFFFFF}
.nav-dd-trigger{display:inline-flex;align-items:center;gap:6px}
.dd-caret{font-size:.55rem;transition:transform .15s ease}
[data-nav-dd]{position:relative}
[data-nav-menu]{visibility:hidden;opacity:0;transition:opacity .15s ease;position:absolute;top:100%;right:0;padding-top:10px;z-index:100}
[data-nav-dd]:hover [data-nav-menu],
[data-nav-dd]:focus-within [data-nav-menu]{visibility:visible;opacity:1}
.dd-panel{background:#0A0F1C;border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:8px;min-width:240px;box-shadow:0 18px 50px rgba(0,0,0,.55)}
.dd-panel a{display:block;padding:9px 14px;border-radius:8px;color:#9CA3AF;font-size:.9rem;text-decoration:none}
.dd-panel a:hover{background:rgba(63,131,248,.12);color:#D7DEE9}
.dd-panel a.dd-all{color:#D7DEE9;font-weight:600}
.dd-panel a.active{color:#F4F7FB;background:rgba(63,131,248,.10)}

/* Hamburger button: hidden on desktop, right corner on mobile */
.nav-toggle{display:none;position:relative;flex:none;width:44px;height:44px;padding:0;border:1px solid rgba(255,255,255,.12);border-radius:10px;background:rgba(255,255,255,.04);color:#F4F7FB;cursor:pointer;-webkit-tap-highlight-color:transparent}
.nav-toggle:hover{background:rgba(255,255,255,.08)}
.nav-toggle:focus-visible{outline:2px solid #3F83F8;outline-offset:2px}
.nav-toggle-bar{position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:currentColor;transition:transform .2s ease,opacity .15s ease}
.nav-toggle-bar:nth-child(1){top:14px}
.nav-toggle-bar:nth-child(2){top:21px}
.nav-toggle-bar:nth-child(3){top:28px}
.site-header.is-open .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.is-open .nav-toggle-bar:nth-child(2){opacity:0}
.site-header.is-open .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:899px){
  .site-header{flex-wrap:nowrap}
  .nav-toggle{display:inline-block}
  .nav-links{position:absolute;top:100%;left:12px;right:12px;z-index:100;flex-direction:column;align-items:stretch;gap:2px;padding:8px;background:#0A0F1C;border:1px solid rgba(255,255,255,.12);border-radius:14px;box-shadow:0 18px 50px rgba(0,0,0,.55);max-height:calc(100vh - 96px);overflow:auto;visibility:hidden;opacity:0;transform:translateY(-6px);transition:opacity .15s ease,transform .15s ease,visibility 0s linear .15s}
  .site-header.is-open .nav-links{visibility:visible;opacity:1;transform:none;transition:opacity .15s ease,transform .15s ease}
  .nav-links>.nav-link,.nav-dd-trigger{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:10px 14px;border-radius:10px;font-size:1rem;color:#D7DEE9}
  .nav-links>.nav-link:hover,.nav-dd-trigger:hover{background:rgba(63,131,248,.12);color:#F4F7FB}
  .nav-links>.nav-link.active{color:#F4F7FB;background:rgba(63,131,248,.10)}
  .dd-caret{font-size:.6rem}
  [data-nav-dd]{position:static}
  [data-nav-dd].is-open .dd-caret{transform:rotate(180deg)}
  [data-nav-menu]{display:none;position:static;visibility:visible;opacity:1;padding:0;transition:none}
  [data-nav-dd].is-open [data-nav-menu]{display:block}
  .dd-panel{background:transparent;border:0;border-radius:0;box-shadow:none;padding:0 0 6px 12px;min-width:0}
  .dd-panel a{display:flex;align-items:center;min-height:44px;padding:8px 14px;font-size:.95rem}
}