/* ============================================
   KUWAYO — Système de design
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --bg:        #0a0a0a;
  --bg-elev:   #131313;
  --card:      #161616;
  --line:      #2a2a2a;
  --text:      #ededed;
  --muted:     #8f8f8f;
  --accent:    #00d4ff;
  --accent-2:  #ff3b3b;
  --gold:      #d4af37;

  --display: 'Oswald', sans-serif;
  --body: 'Inter', sans-serif;

  --container: 1240px;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Typography ---------- */
h1,h2,h3,h4{
  font-family:var(--display);
  text-transform:uppercase;
  letter-spacing:0.04em;
  font-weight:600;
  line-height:1.1;
}
.eyebrow{
  font-family:var(--display);
  font-size:.78rem;
  letter-spacing:0.32em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:500;
}
.lead{
  color:var(--muted);
  font-size:1.05rem;
  max-width:60ch;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:14px 32px;
  font-family:var(--display);
  font-size:.85rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  font-weight:600;
  border-radius:2px;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .25s ease;
}
.btn-primary{
  background:var(--text);
  color:#0a0a0a;
}
.btn-primary:hover{ background:var(--accent); color:#0a0a0a; }
.btn-outline{
  background:transparent;
  color:var(--text);
  border-color:var(--line);
}
.btn-outline:hover{ border-color:var(--accent); color:var(--accent); }
.btn-block{ width:100%; }

/* ============================================
   HEADER
   ============================================ */
.site-header{
  position:fixed; top:0; left:0; right:0;
  z-index:100;
  background:rgba(10,10,10,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:74px;
}
.logo{
  font-family:var(--display);
  font-size:1.5rem;
  letter-spacing:.32em;
  font-weight:700;
}
.logo span{ color:var(--accent); }
.nav-links{
  display:flex;
  gap:2.5rem;
  align-items:center;
}
.nav-links a{
  font-family:var(--display);
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  transition:color .2s;
}
.nav-links a:hover{ color:var(--text); }
.nav-cart{
  position:relative;
  font-family:var(--display);
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
}
.cart-count{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:18px; height:18px;
  border-radius:50%;
  background:var(--accent);
  color:#0a0a0a;
  font-size:.65rem;
  font-weight:700;
  margin-left:6px;
  padding:0 4px;
}
.burger{ display:none; background:none; border:none; color:var(--text); font-size:1.5rem; cursor:pointer; }

/* ============================================
   HERO
   ============================================ */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  padding-top:74px;
  overflow:hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 30%, rgba(0,212,255,.10), transparent 60%),
    linear-gradient(180deg, #0a0a0a 0%, #0d0d0d 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:3rem;
  align-items:center;
  width:100%;
}
.hero-eyebrow{
  display:flex; align-items:center; gap:.75rem;
  margin-bottom:1.5rem;
}
.hero-eyebrow .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 12px var(--accent);
}
.hero h1{
  font-size:clamp(2.6rem, 6vw, 5.2rem);
  margin-bottom:1.25rem;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg, var(--accent), #7af0ff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero p{
  color:var(--muted);
  font-size:1.1rem;
  max-width:48ch;
  margin-bottom:2.25rem;
}
.hero-cta{ display:flex; gap:1rem; flex-wrap:wrap; }

.hero-visual{
  position:relative;
  aspect-ratio:1/1;
  border-radius:8px;
  overflow:hidden;
  background:radial-gradient(circle at center, #1a1a1a, #050505);
  border:1px solid var(--line);
}
.hero-visual img{
  width:100%; height:100%; object-fit:cover;
  mix-blend-mode:screen;
  filter: contrast(1.05);
}
.hero-stats{
  position:absolute; bottom:0; left:0; right:0;
  display:flex;
  border-top:1px solid var(--line);
  background:rgba(10,10,10,.7);
  backdrop-filter:blur(8px);
}
.hero-stat{
  flex:1;
  text-align:center;
  padding:1rem .5rem;
  border-right:1px solid var(--line);
}
.hero-stat:last-child{ border-right:none; }
.hero-stat .num{
  font-family:var(--display);
  font-size:1.6rem;
  color:var(--accent);
}
.hero-stat .lbl{
  font-size:.7rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
  margin-top:.25rem;
}

/* ============================================
   SECTIONS GENERIC
   ============================================ */
section{ padding:6rem 0; }
.section-head{
  text-align:center;
  max-width:680px;
  margin:0 auto 3.5rem;
}
.section-head h2{
  font-size:clamp(1.8rem,4vw,3rem);
  margin:.75rem 0 1rem;
}
.section-head p{ color:var(--muted); }
.section-alt{ background:var(--bg-elev); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

/* ============================================
   TECHNOLOGY (Xneuron)
   ============================================ */
.tech-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4rem;
  align-items:center;
  margin-bottom:6rem;
}
.tech-row:last-child{ margin-bottom:0; }
.tech-row.reverse .tech-media{ order:2; }
.tech-row.reverse .tech-copy{ order:1; }
.tech-media{
  border-radius:8px;
  overflow:hidden;
  border:1px solid var(--line);
  background:#000;
}
.tech-media img{ width:100%; }
.tech-copy h3{
  font-size:clamp(1.5rem,3vw,2.2rem);
  margin:.75rem 0 1rem;
}
.tech-copy p{ color:var(--muted); margin-bottom:1rem; }
.tech-spec-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  margin-top:1.5rem;
}
.tech-spec{
  background:var(--card);
  padding:1.25rem;
}
.tech-spec .v{
  font-family:var(--display);
  font-size:1.8rem;
  color:var(--accent);
}
.tech-spec .k{
  font-size:.75rem;
  color:var(--muted);
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-top:.25rem;
}

/* ============================================
   PRODUCT GRID
   ============================================ */
.collection-tabs{
  display:flex;
  gap:.5rem;
  justify-content:center;
  flex-wrap:wrap;
  margin-bottom:3rem;
}
.tab{
  padding:.6rem 1.4rem;
  border:1px solid var(--line);
  border-radius:999px;
  font-family:var(--display);
  font-size:.78rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  cursor:pointer;
  background:transparent;
  transition:all .2s;
}
.tab.active, .tab:hover{
  border-color:var(--accent);
  color:var(--accent);
}

.product-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:1.5rem;
}
.product-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  overflow:hidden;
  transition:transform .25s, border-color .25s;
  cursor:pointer;
  display:block;
}
.product-card:hover{
  transform:translateY(-4px);
  border-color:#3a3a3a;
}
.product-card .thumb{
  aspect-ratio:4/3;
  background:#fff;
  overflow:hidden;
  position:relative;
}
.product-card .thumb img{
  width:100%; height:100%;
  object-fit:cover;
  object-position:center;
}
.product-card .badge{
  position:absolute; top:10px; left:10px;
  background:#0a0a0a;
  color:var(--accent);
  font-family:var(--display);
  font-size:.62rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  padding:4px 10px;
  border-radius:2px;
}
.product-card .info{ padding:1.1rem 1.2rem 1.4rem; }
.product-card .collection{
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:.35rem;
}
.product-card h4{
  font-size:1.05rem;
  letter-spacing:.04em;
  margin-bottom:.5rem;
}
.product-card .price-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.product-card .price{
  font-family:var(--display);
  font-size:1.25rem;
  color:var(--text);
}
.product-card .lens-tag{
  font-size:.68rem;
  color:var(--muted);
  border:1px solid var(--line);
  padding:2px 8px;
  border-radius:3px;
  text-transform:uppercase;
  letter-spacing:.08em;
}

/* ============================================
   PRODUCT DETAIL
   ============================================ */
.pdp{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:4rem;
  padding-top:120px;
}
.pdp-gallery{
  position:sticky; top:100px; align-self:start;
  border-radius:8px;
  overflow:hidden;
  background:#fff;
  border:1px solid var(--line);
}
.pdp-gallery img{ width:100%; }
.pdp-info .collection-link{
  font-family:var(--display);
  font-size:.78rem;
  letter-spacing:.2em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:.75rem;
  display:inline-block;
}
.pdp-info h1{
  font-size:clamp(1.8rem,4vw,2.6rem);
  margin-bottom:.5rem;
}
.pdp-info .subtitle{
  color:var(--muted);
  font-size:1rem;
  margin-bottom:1.25rem;
}
.pdp-price{
  font-family:var(--display);
  font-size:2rem;
  color:var(--accent);
  margin-bottom:1.5rem;
}
.pdp-desc{ color:var(--muted); margin-bottom:1.75rem; }
.pdp-features{
  display:grid;
  gap:.75rem;
  margin-bottom:2rem;
}
.pdp-feature{
  display:flex; gap:.75rem; align-items:flex-start;
  font-size:.92rem;
}
.pdp-feature .ico{
  color:var(--accent);
  flex-shrink:0;
  margin-top:2px;
}
.pdp-actions{ display:flex; gap:1rem; margin-bottom:2rem; }
.pdp-meta{
  border-top:1px solid var(--line);
  padding-top:1.5rem;
  font-size:.85rem;
  color:var(--muted);
  display:grid;
  gap:.5rem;
}
.pdp-meta b{ color:var(--text); }

/* ============================================
   CART DRAWER
   ============================================ */
.cart-overlay{
  position:fixed; inset:0;
  background:rgba(0,0,0,.6);
  z-index:200;
  opacity:0; pointer-events:none;
  transition:opacity .3s;
}
.cart-overlay.open{ opacity:1; pointer-events:all; }
.cart-drawer{
  position:fixed; top:0; right:0; bottom:0;
  width:min(420px, 92vw);
  background:var(--bg-elev);
  border-left:1px solid var(--line);
  z-index:201;
  transform:translateX(100%);
  transition:transform .35s cubic-bezier(.16,1,.3,1);
  display:flex; flex-direction:column;
}
.cart-drawer.open{ transform:translateX(0); }
.cart-head{
  display:flex; justify-content:space-between; align-items:center;
  padding:1.5rem; border-bottom:1px solid var(--line);
}
.cart-head h3{ font-size:1.1rem; }
.cart-close{ background:none; border:none; color:var(--text); font-size:1.4rem; cursor:pointer; }
.cart-items{ flex:1; overflow-y:auto; padding:1rem 1.5rem; }
.cart-item{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:1rem;
  align-items:center;
  padding:1rem 0;
  border-bottom:1px solid var(--line);
}
.cart-item img{ width:64px; height:64px; object-fit:cover; border-radius:4px; background:#fff; }
.cart-item .name{ font-size:.9rem; font-weight:600; }
.cart-item .variant{ font-size:.78rem; color:var(--muted); }
.cart-item .qty-row{
  display:flex; align-items:center; gap:.5rem; margin-top:.4rem;
}
.qty-btn{
  width:22px;height:22px;
  border:1px solid var(--line);
  background:none; color:var(--text);
  cursor:pointer; border-radius:3px;
  display:flex;align-items:center;justify-content:center;
  font-size:.8rem;
}
.cart-item .price{ font-family:var(--display); font-size:.95rem; }
.cart-item .remove{
  background:none;border:none;color:var(--muted);
  font-size:.75rem; text-decoration:underline; cursor:pointer;
  margin-top:.4rem;
}
.cart-empty{ text-align:center; color:var(--muted); padding:3rem 1rem; }
.cart-foot{
  border-top:1px solid var(--line);
  padding:1.5rem;
}
.cart-subtotal{
  display:flex; justify-content:space-between;
  font-family:var(--display); font-size:1.2rem;
  margin-bottom:1rem;
}
.cart-note{ font-size:.78rem; color:var(--muted); margin-top:.75rem; text-align:center; }

/* ============================================
   TRUST / CERTIFS
   ============================================ */
.trust-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.trust-item{
  background:var(--bg);
  padding:2.5rem 1.5rem;
  text-align:center;
}
.trust-item .ic{ font-size:1.8rem; color:var(--accent); margin-bottom:1rem; }
.trust-item h4{ font-size:.95rem; margin-bottom:.5rem; }
.trust-item p{ font-size:.85rem; color:var(--muted); }

/* ============================================
   FOOTER
   ============================================ */
.site-footer{
  border-top:1px solid var(--line);
  padding:4rem 0 2rem;
  background:var(--bg-elev);
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:2rem;
  margin-bottom:3rem;
}
.footer-grid h5{
  font-family:var(--display);
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  margin-bottom:1rem;
  color:var(--text);
}
.footer-grid li{ margin-bottom:.6rem; }
.footer-grid a{ color:var(--muted); font-size:.9rem; transition:color .2s; }
.footer-grid a:hover{ color:var(--accent); }
.footer-logo{
  font-family:var(--display);
  font-size:1.5rem;
  letter-spacing:.32em;
  margin-bottom:1rem;
}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:1.5rem;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:1rem;
  font-size:.8rem;
  color:var(--muted);
}

/* ============================================
   PAGES (mentions, cgv etc)
   ============================================ */
.page-content{
  padding-top:140px;
  max-width:780px;
  margin:0 auto;
}
.page-content h1{ font-size:2rem; margin-bottom:1.5rem; }
.page-content h2{ font-size:1.2rem; margin:2rem 0 .75rem; text-transform:none; letter-spacing:0; }
.page-content p, .page-content li{ color:var(--muted); margin-bottom:.75rem; }
.page-content ul{ list-style:disc; padding-left:1.5rem; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns:1fr; text-align:center; }
  .hero p{ margin-left:auto; margin-right:auto; }
  .hero-cta{ justify-content:center; }
  .tech-row, .tech-row.reverse{ grid-template-columns:1fr; }
  .tech-row.reverse .tech-media{ order:1; }
  .tech-row.reverse .tech-copy{ order:2; }
  .product-grid{ grid-template-columns:repeat(2,1fr); }
  .pdp{ grid-template-columns:1fr; padding-top:100px; }
  .pdp-gallery{ position:static; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .nav-links{
    display:none;
    position:absolute; top:74px; left:0; right:0;
    background:var(--bg-elev);
    border-bottom:1px solid var(--line);
    flex-direction:column;
    padding:1rem 24px;
    gap:1.25rem;
  }
  .nav-links.mobile-open{ display:flex; }
  .burger{ display:block; }
  .trust-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:560px){
  .product-grid{ grid-template-columns:1fr 1fr; }
  .trust-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  section{ padding:4rem 0; }
}