/* =========================================================
   Iventure unified header — the cinematic dune-fill pill from
   the homepage, made self-contained so it can be dropped on
   every inner page without loading the whole iventure.css.
   Needs: <header class="iv-nav" data-dune-header> with a
   <canvas class="iv-nav-dunes"> inside, iventure-dunes.js, and
   iv-header.js (burger toggle).
   ========================================================= */
.iv-nav{position:fixed;top:20px;left:50%;right:auto;z-index:1000;width:min(1200px,calc(100% - 32px));transform:translateX(-50%);display:flex;align-items:center;justify-content:space-between;gap:18px;border-radius:22px;border:1px solid rgba(255,255,255,.24);background:rgba(18,14,9,.4);color:#fff;backdrop-filter:blur(16px) saturate(135%);-webkit-backdrop-filter:blur(16px) saturate(135%);box-shadow:0 16px 46px rgba(0,0,0,.30);padding:0;overflow:visible;transition:background .45s ease,box-shadow .45s ease,border-color .45s ease,top .35s ease}
.iv-nav.is-dunes-filled{background:transparent;border-color:rgba(120,72,28,.32);box-shadow:0 18px 48px rgba(120,72,28,.24)}
.iv-nav-dunes{position:absolute;inset:0;width:100%;height:100%;border-radius:22px;z-index:0;pointer-events:none}
.iv-nav-inner{position:relative;z-index:1;width:100%;margin:0;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:92px;padding:0 16px 0 26px}
.iv-brand{display:flex;align-items:center;gap:12px;min-width:0;text-decoration:none}
.iv-brand-logo{height:78px;width:auto;display:block}
.iv-brand-color{display:block;filter:drop-shadow(0 4px 16px rgba(0,0,0,.45))}
.iv-brand-white{display:none}
.iv-menu{display:flex;align-items:center;gap:8px}
.iv-menu a{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 17px;border-radius:8px;font-family:'Space Mono',ui-monospace,monospace;font-size:13.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#fff;text-decoration:none;text-shadow:0 1px 10px rgba(0,0,0,.35);opacity:.86;transition:opacity .2s,background .2s,transform .2s}
.iv-menu a:hover{opacity:1;background:rgba(255,255,255,.16);transform:translateY(-1px)}
.iv-nav.is-dunes-filled .iv-menu a{color:#3a2611;text-shadow:none}
.iv-nav.is-dunes-filled .iv-menu a:hover{background:rgba(120,72,28,.12)}
.iv-nav-cta{background:#f4791f!important;color:#fff!important;opacity:1!important;padding-inline:20px!important;box-shadow:0 12px 26px rgba(217,58,29,.25);text-shadow:none!important}
.iv-nav-cta:hover{background:#e2641a!important}
.iv-burger{display:none;width:46px;height:42px;border:1px solid rgba(255,255,255,.6);border-radius:8px;background:transparent;color:#fff;align-items:center;justify-content:center;flex-direction:column;gap:6px;cursor:pointer}
.iv-burger span{width:22px;height:2px;background:currentColor;border-radius:2px;transition:transform .25s,opacity .25s}
.iv-nav.is-dunes-filled .iv-burger{color:#3a2611;border-color:rgba(58,38,17,.4)}
.iv-nav.nav-open .iv-burger span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.iv-nav.nav-open .iv-burger span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
@media (max-width:860px){
  .iv-nav{top:12px;width:calc(100% - 20px);border-radius:16px}
  .iv-nav-dunes{border-radius:16px}
  .iv-nav-inner{min-height:68px;padding:0 12px 0 18px}
  .iv-brand-logo{height:54px}
  .iv-burger{display:flex}
  .iv-menu{position:absolute;left:0;right:0;top:calc(100% + 8px);display:grid;gap:8px;padding:12px;border-radius:16px;background:rgba(251,247,239,.98);color:#1b140d;border:1px solid rgba(120,72,28,.18);box-shadow:0 22px 60px rgba(0,0,0,.2);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:opacity .22s,visibility .22s,transform .22s}
  .iv-menu.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .iv-menu a{justify-content:flex-start;background:rgba(120,72,28,.06);min-height:48px;color:#1b140d!important;text-shadow:none!important}
  .iv-nav-cta{justify-content:center!important;background:#f4791f!important;color:#fff!important}
}