/* NexoraVaultHub — LIGHT theme, cinematic & premium */
:root{
  --bg:#f7f8fc;
  --bg-2:#ffffff;
  --surface:#ffffff;
  --surface-strong:#ffffff;
  --border:#e6e9f2;
  --text:#0f1533;
  --muted:#5b6485;
  --primary:#4f46e5;
  --primary-2:#7c3aed;
  --accent:#9333ea;
  --gold:#c98700;
  --success:#059669;
  --danger:#dc2626;
  --grad:linear-gradient(135deg,#4f46e5 0%,#7c3aed 60%,#9333ea 100%);
  --grad-soft:linear-gradient(135deg,rgba(79,70,229,.08),rgba(147,51,234,.08));
  --shadow:0 20px 45px -22px rgba(30,40,110,.28);
  --shadow-glow:0 18px 45px -14px rgba(124,58,237,.45);
  --radius:16px;
  --radius-lg:24px;
  --font:'Sora','Segoe UI',system-ui,-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.65;overflow-x:hidden;
  background-image:
    radial-gradient(900px 500px at 85% -5%,rgba(124,58,237,.10),transparent 60%),
    radial-gradient(800px 500px at -10% 15%,rgba(79,70,229,.09),transparent 60%);
  background-attachment:fixed;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1160px,92%);margin-inline:auto}
.section{padding:80px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 48px}
.eyebrow{display:inline-block;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;
  color:#7c3aed;background:rgba(124,58,237,.10);border:1px solid rgba(124,58,237,.2);
  padding:6px 16px;border-radius:999px;margin-bottom:16px;font-weight:700}
h1,h2,h3{line-height:1.2;font-weight:800;color:var(--text)}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem)}
.section-head p{color:var(--muted);margin-top:12px;font-size:1.05rem}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.glass{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}

/* Preloader */
#preloader{position:fixed;inset:0;background:#fff;z-index:2000;display:flex;
  align-items:center;justify-content:center;flex-direction:column;gap:18px;transition:opacity .5s,visibility .5s}
#preloader.hidden{opacity:0;visibility:hidden}
.loader-ring{width:56px;height:56px;border-radius:50%;border:3px solid #e6e9f2;border-top-color:#7c3aed;animation:spin 1s linear infinite}
.loader-brand{font-weight:700;color:#0f1533}
@keyframes spin{to{transform:rotate(360deg)}}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(255,255,255,.85);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 8px 24px -14px rgba(30,40,110,.25)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text)}
.logo img{width:36px;height:36px}
.nav-links{display:flex;align-items:center;gap:26px;font-size:.95rem}
.nav-links a{color:var(--muted);font-weight:600;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;border-radius:2px;transition:.3s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-weight:700;font-size:.95rem;font-family:var(--font);
  cursor:pointer;border:0;transition:transform .2s,box-shadow .2s,background .2s;white-space:nowrap;text-align:center}
.btn:focus-visible{outline:2px solid #7c3aed;outline-offset:3px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 55px -14px rgba(124,58,237,.6)}
.btn-outline{background:#fff;color:var(--text);border:1.5px solid var(--border)}
.btn-outline:hover{background:#f4f5fb;transform:translateY(-2px)}
.btn-gold{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#3a2400;box-shadow:0 14px 40px -14px rgba(251,191,36,.55)}
.btn-gold:hover{transform:translateY(-2px)}
.btn-whatsapp{background:#25d366;color:#fff;box-shadow:0 12px 34px -14px rgba(37,211,102,.65)}
.btn-whatsapp:hover{transform:translateY(-2px);box-shadow:0 18px 44px -12px rgba(37,211,102,.75)}
.btn-block{width:100%}
.btn-sm{padding:10px 20px;font-size:.87rem}

/* Hero */
.hero{padding:140px 0 70px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-sub{color:var(--muted);font-size:1.13rem;margin:18px 0 26px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-badges{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:.9rem;font-weight:600}
.hero-visual{position:relative;border-radius:24px;overflow:hidden;box-shadow:0 30px 80px -30px rgba(30,40,110,.4);aspect-ratio:16/9;background:#000}
.hero-visual video,.hero-visual img{width:100%;height:100%;object-fit:cover;display:block}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 55%,rgba(0,0,0,.28))}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{padding:26px;text-align:center}
.stat-num{font-size:2rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;color:transparent}
.stat-label{color:var(--muted);font-size:.9rem;font-weight:600;margin-top:4px}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.feature{padding:26px;transition:transform .25s}
.feature:hover{transform:translateY(-4px)}
.feature-icon{font-size:2rem;margin-bottom:10px}
.feature h3{font-size:1.1rem;margin-bottom:6px}
.feature p{color:var(--muted);font-size:.95rem}

/* Books */
.books-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:26px}
.book-card{overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.book-card:hover{transform:translateY(-6px);box-shadow:0 30px 60px -22px rgba(30,40,110,.35)}
.book-cover{position:relative;background:linear-gradient(135deg,#f4f5fb,#eef0fa);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;padding:22px}
.book-cover img{max-height:100%;width:auto;filter:drop-shadow(0 24px 30px rgba(30,40,110,.28))}
.book-tag{position:absolute;top:14px;left:14px;padding:5px 12px;border-radius:999px;font-size:.72rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
.tag-free{background:#059669;color:#fff}
.tag-premium{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#3a2400}
.book-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.book-body h3{font-size:1.15rem}
.book-body>p{color:var(--muted);font-size:.95rem}
.book-price{font-size:1.5rem;font-weight:800;color:#7c3aed}
.book-price .old{color:#9aa1c1;text-decoration:line-through;font-size:1rem;font-weight:600;margin-left:8px}
.book-feats{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--muted)}
.book-feats li::before{content:"✓ ";color:#059669;font-weight:800}
.book-card .btn{margin-top:auto}

/* Testimonials */
.testi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.testi{padding:26px;display:flex;flex-direction:column;gap:14px}
.stars{color:#fbbf24;font-size:1.1rem}
.testi p{color:#2a3055}
.testi-author{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.testi-author span{display:block;color:var(--muted);font-size:.85rem}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:820px;margin:0 auto}
.faq-item{overflow:hidden}
.faq-q{width:100%;background:none;border:0;padding:20px 22px;display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:1rem;cursor:pointer;color:var(--text);font-family:var(--font)}
.faq-q .chev{transition:transform .3s}
.faq-q[aria-expanded="true"] .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 22px;color:var(--muted)}

/* Newsletter */
.newsletter{padding:44px;text-align:center;background:linear-gradient(135deg,#fff,#f4f5fb);border:1px solid var(--border)}
.newsletter p{color:var(--muted);margin:10px 0 22px}
.form-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:12px}
.form-row input[type=text],.form-row input[type=email]{flex:1;min-width:200px;padding:13px 18px;border-radius:999px;border:1.5px solid var(--border);background:#fff;color:var(--text);font-family:var(--font);font-size:.95rem}
.form-row input:focus{outline:none;border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.15)}
.consent{display:flex;align-items:center;gap:8px;justify-content:center;color:var(--muted);font-size:.88rem;flex-wrap:wrap}
.consent input{accent-color:#7c3aed}
.form-msg{margin-top:14px;font-weight:600;min-height:1.2em}
.form-msg.success{color:var(--success)}
.form-msg.error{color:var(--danger)}
.hp-field{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;opacity:0!important}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(10,16,45,.55);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;z-index:2500;padding:20px}
.modal-backdrop.show,.modal-backdrop.open{display:flex}
.modal{background:#fff;padding:36px;max-width:460px;width:100%;position:relative;border-radius:22px;box-shadow:0 40px 90px -30px rgba(30,40,110,.6)}
.modal h3{margin-bottom:8px;font-size:1.4rem}
.modal-sub{color:var(--muted);margin-bottom:20px}
.modal-close{position:absolute;top:14px;right:14px;background:none;border:0;font-size:1.3rem;cursor:pointer;color:var(--muted)}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:.85rem;margin-bottom:6px;color:var(--text)}
.field input{width:100%;padding:12px 16px;border-radius:12px;border:1.5px solid var(--border);background:#fff;font-family:var(--font);font-size:.95rem;color:var(--text)}
.field input:focus{outline:none;border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.15)}

/* Page hero */
.page-hero{padding:130px 0 40px;text-align:center}
.breadcrumbs{display:flex;justify-content:center;gap:8px;color:var(--muted);font-size:.9rem;margin-bottom:16px}
.breadcrumbs a{color:#7c3aed;font-weight:600}
.page-hero p{color:var(--muted);max-width:640px;margin:14px auto 0}

/* Legal page */
.legal{max-width:860px;margin:0 auto;padding:20px 0 40px}
.legal h2{margin-top:32px;margin-bottom:12px;font-size:1.4rem}
.legal p,.legal li{color:#3a4166;margin-bottom:10px}
.legal ul{padding-left:20px;list-style:disc}

/* Footer */
.site-footer{background:#0f1533;color:#c9cee6;padding:60px 0 24px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px;margin-bottom:36px}
.site-footer .logo{color:#fff}
.footer-brand p{color:#9aa1c1;margin:14px 0;font-size:.95rem}
.social-row{display:flex;gap:12px;font-size:1.4rem}
.social-row a{width:40px;height:40px;background:rgba(255,255,255,.08);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .2s,transform .2s}
.social-row a:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
.site-footer ul li{margin-bottom:8px}
.site-footer a{color:#c9cee6;font-size:.93rem}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;color:#9aa1c1;font-size:.88rem}

/* Floating WhatsApp */
.wa-float{position:fixed;bottom:22px;right:22px;z-index:1500;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.wa-btn{width:60px;height:60px;border-radius:50%;background:#25d366;color:#fff;font-size:1.9rem;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 34px -8px rgba(37,211,102,.55);border:0;cursor:pointer;position:relative;text-decoration:none;transition:transform .2s}
.wa-btn:hover{transform:scale(1.08)}
.wa-btn::after{content:"";position:absolute;inset:-8px;border-radius:50%;border:2px solid #25d366;opacity:.4;animation:pulse 1.6s ease-out infinite}
@keyframes pulse{0%{transform:scale(.9);opacity:.6}100%{transform:scale(1.5);opacity:0}}
.wa-panel{display:none;background:#fff;border-radius:16px;box-shadow:0 24px 60px -18px rgba(30,40,110,.4);width:290px;overflow:hidden}
.wa-panel.open{display:block}
.wa-panel-head{background:#075e54;color:#fff;padding:14px 18px}
.wa-panel-head strong{display:block}
.wa-panel-head small{color:#a7f3d0;font-size:.8rem}
.wa-panel-body{padding:16px 18px;background:#e5ddd5;font-size:.92rem;color:#0f1533}
.wa-panel-body .msg{background:#fff;padding:10px 14px;border-radius:12px;box-shadow:0 2px 6px rgba(0,0,0,.06);margin-bottom:10px}
.wa-panel a.wa-cta{display:block;text-align:center;background:#25d366;color:#fff;padding:12px;font-weight:700;text-decoration:none}

/* Responsive */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:24px;border-bottom:1px solid var(--border);gap:16px;transform:translateY(-120%);transition:transform .3s;box-shadow:0 12px 30px -10px rgba(0,0,0,.15)}
  .nav-links.open{transform:translateY(0)}
  .nav-toggle{display:block}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .newsletter{padding:28px 20px}
  .modal{padding:26px 20px}
  .wa-btn{width:56px;height:56px;font-size:1.7rem}
}