:root {
  --black:#0b0b0b;
  --gold:#d4af37;
  --grey:#bdbdbd;
  --white:#ffffff;
}

/* RESET */
* {
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html {
  scroll-behavior:smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  background:var(--black);
  color:var(--white);
  line-height:1.6;
}

/* ================= PRELOADER ================= */
#preloader {
  position:fixed;
  inset:0;
  background:#000;
  display:flex;
  justify-content:center;
  align-items:center;
  z-index:9999;
}
#preloader.hide {
  opacity:0;
  pointer-events:none;
  transition:0.6s ease;
}
.loader {
  width:48px;
  height:48px;
  border:3px solid rgba(212,175,55,.3);
  border-top-color:var(--gold);
  border-radius:50%;
  animation:spin 1s linear infinite;
}
@keyframes spin {
  to { transform:rotate(360deg); }
}

/* ================= NAVBAR ================= */
.navbar {
  position:fixed;
  top:0;
  width:100%;
  background:rgba(0,0,0,.75);
  backdrop-filter:blur(10px);
  z-index:100;
}
.nav-container {
  max-width:1200px;
  margin:auto;
  padding:18px 24px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.logo {
  height:56px;
}
nav a {
  margin-left:28px;
  text-decoration:none;
  color:var(--grey);
  font-size:0.95rem;
  transition:color .3s ease;
}
nav a:hover {
  color:var(--white);
}
.nav-cta {
  color:var(--gold);
  font-weight:600;
}

/* ================= HERO ================= */
.hero {
  min-height:100vh;
  padding:160px 8% 120px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.hero h1 {
  font-size:3rem;
  letter-spacing:-0.02em;
}
.tagline {
  opacity:.85;
  margin:16px 0 32px;
  font-size:1.05rem;
}
.price {
  margin-bottom:32px;
}
.price .old {
  text-decoration:line-through;
  opacity:.5;
  margin-right:12px;
  font-size:1.1rem;
}
.price .new {
  font-size:2.4rem;
  font-weight:700;
}
.hero-cta {
  margin-top:20px;
}

.hero-image img {
  width:100%;
  border-radius:24px;
  transition:transform .6s ease;
}
.hero-image img:hover {
  transform:scale(1.04);
}

/* ================= BUTTON ================= */
.btn-primary {
  display:inline-flex;
  gap:12px;
  align-items:center;
  background:linear-gradient(135deg,#d4af37,#b8962e);
  color:#000;
  padding:18px 44px;
  border-radius:999px;
  font-weight:600;
  text-decoration:none;
  font-size:1rem;
  transition:transform .3s ease, box-shadow .3s ease;
}
.btn-primary:hover {
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(212,175,55,.35);
}
.large {
  font-size:1.15rem;
  padding:22px 56px;
}

/* ================= SECTIONS ================= */
.section {
  background:#fff;
  color:#000;
  padding:120px 8%;
}
.dark {
  background:#111;
  color:#fff;
}
.section-title {
  text-align:center;
  font-size:2.6rem;
  margin-bottom:18px;
  letter-spacing:-0.02em;
}
.section-subtitle {
  text-align:center;
  max-width:680px;
  margin:0 auto 70px;
  opacity:.8;
  font-size:1rem;
}

/* ================= PRODUCT DETAILS ================= */
.product-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:36px;
}

.product-card {
  text-align:center;
}

.product-image-wrap {
  background:#fff;
  border-radius:20px;
  padding:22px;
  overflow:hidden;
}

.product-image-wrap img {
  width:100%;
  border-radius:14px;
  transition:transform .45s ease;
}

.product-card:hover .product-image-wrap img {
  transform:scale(1.05);
}

.product-caption {
  margin-top:16px;
  font-size:0.95rem;
  opacity:.85;
}

/* ================= STYLES GRID ================= */
.grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:36px;
}
.card h4 {
  margin-top:18px;
  font-size:1.05rem;
  font-weight:600;
}

/* ================= CTA ================= */
.cta {
  background:radial-gradient(circle at top,#1a1a1a,#000);
  padding:140px 8%;
  text-align:center;
}
.cta-subtext {
  margin:22px 0 40px;
  opacity:.85;
  font-size:1.05rem;
}

/* ================= FOOTER ================= */
footer {
  padding:44px 20px;
  text-align:center;
  background:#000;
  opacity:.75;
  font-size:0.9rem;
}

/* ================= REVEAL ANIMATION ================= */
.reveal {
  opacity:0;
  transform:translateY(36px);
  transition:.8s ease;
}
.reveal.show {
  opacity:1;
  transform:translateY(0);
}

/* ================= FLOATING WHATSAPP ================= */
.whatsapp-float {
  position:fixed;
  bottom:24px;
  left:24px;
  background:#25D366;
  color:#fff;
  width:56px;
  height:56px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.4rem;
  box-shadow:0 10px 25px rgba(0,0,0,.35);
  z-index:999;
  transition:transform .3s ease;
}
.whatsapp-float:hover {
  transform:scale(1.08);
}

/* ================= RESPONSIVE ================= */
@media(max-width:900px){
  .hero {
    grid-template-columns:1fr;
    padding:140px 6% 100px;
  }
  .logo {
    height:46px;
  }
  .section {
    padding:100px 6%;
  }
}
.faq-question.active {
  color: var(--gold);
}