/* ═══════════════════════════════════════════
   NAVIGATION — Transparent → White on scroll
   ═══════════════════════════════════════════ */
nav{position:fixed;top:0;left:0;right:0;z-index:200;display:flex;align-items:center;justify-content:space-between;padding:24px 80px;transition:all .5s var(--ease)}
nav.scrolled{background:rgba(255,255,255,0.92);backdrop-filter:blur(20px) saturate(1.6);border-bottom:1px solid var(--border3);padding:16px 80px;box-shadow:0 1px 16px rgba(0,0,0,0.04)}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;transition:opacity .3s}
.nav-logo:hover{opacity:0.85}
.nav-logo-img{height:42px;width:auto;display:block;object-fit:contain;border-radius:6px}
.nav-logo-text{font-size:22px;font-weight:800;letter-spacing:-0.03em;color:#fff;transition:color .4s;white-space:nowrap}
.nav-logo-text span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}
nav.scrolled .nav-logo-text{color:var(--text-heading)}
.nav-links{display:flex;gap:40px;list-style:none}
.nav-links a{font-size:13px;letter-spacing:0.08em;text-transform:uppercase;color:rgba(255,255,255,0.7);font-weight:500;transition:color .3s;position:relative;padding-bottom:4px}
.nav-links a:hover{color:#fff}
nav.scrolled .nav-links a{color:var(--muted)}
nav.scrolled .nav-links a:hover{color:var(--text-heading)}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient);transition:width .4s var(--ease);border-radius:1px}
.nav-links a:hover::after{width:100%}
.nav-cta{display:inline-flex;align-items:center;justify-content:center;background:var(--gradient);color:#fff;border:none;font-family:var(--font);font-size:12px;letter-spacing:0.1em;text-transform:uppercase;text-decoration:none;font-weight:700;padding:11px 28px;border-radius:var(--radius-pill);cursor:pointer;transition:all .35s var(--ease);box-shadow:0 2px 12px rgba(79,70,229,0.2)}
.nav-cta:hover{transform:translateY(-1px) scale(1.03);box-shadow:0 6px 24px rgba(79,70,229,0.3)}
.nav-menu{display:none;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.22);border-radius:999px;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;transition:all .3s var(--ease)}
.nav-menu span{width:18px;height:2px;background:#fff;border-radius:2px;transition:all .3s var(--ease)}
nav.scrolled .nav-menu{background:var(--white);border-color:var(--border2)}
nav.scrolled .nav-menu span{background:var(--text-heading)}

@media(max-width:1100px){
  nav,nav.scrolled{padding-left:36px;padding-right:36px}
  .nav-links{gap:24px}
  .nav-logo-text{font-size:20px}
  .nav-cta{padding:10px 18px;font-size:11px}
}

@media(max-width:900px){
  nav,nav.scrolled{padding:14px 20px}
  nav{background:rgba(10,22,40,0.5);backdrop-filter:blur(18px) saturate(1.25)}
  nav.scrolled,nav.open{background:rgba(255,255,255,0.96)}
  .nav-logo-img{height:36px}
  .nav-logo-text{font-size:18px}
  .nav-menu{display:flex;order:3}
  nav.open .nav-menu{background:var(--white);border-color:var(--border2)}
  nav.open .nav-menu span{background:var(--text-heading)}
  nav.open .nav-menu span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  nav.open .nav-menu span:nth-child(2){opacity:0}
  nav.open .nav-menu span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-links{position:fixed;top:72px;left:16px;right:16px;display:grid;gap:0;background:rgba(255,255,255,0.98);border:1px solid var(--border2);border-radius:18px;box-shadow:var(--shadow-xl);padding:10px;opacity:0;visibility:hidden;transform:translateY(-12px);transition:all .28s var(--ease);list-style:none}
  nav.open .nav-links{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-links a,nav.scrolled .nav-links a{display:block;color:var(--text-heading);font-size:13px;padding:14px 16px;border-radius:12px}
  .nav-links a:hover{background:var(--surface);color:var(--text-heading)}
  .nav-links a::after{display:none}
  .nav-cta{order:2;margin-left:auto;margin-right:12px;padding:10px 16px;font-size:11px;white-space:nowrap}
}

@media(max-width:420px){
  nav,nav.scrolled{padding-left:14px;padding-right:14px}
  .nav-logo-img{height:30px}
  .nav-logo-text{font-size:18px}
  .nav-logo{gap:8px}
  .nav-cta{display:none}
  .nav-menu{width:42px;height:42px}
  .nav-links{top:68px;left:12px;right:12px}
}