:root{
  --bg: #060b13;
  --bg-alt: #0a1220;
  --panel: #0e1a2c;
  --panel-2: #101f34;
  --line: rgba(255,255,255,.09);
  --line-strong: rgba(255,255,255,.16);
  --ink: #eef2f7;
  --ink-soft: #9fb0c3;
  --ink-faint: #6c7d92;
  --silver: #c3cad4;
  --blue: #2f8fef;
  --blue-2: #63b3ff;
  --blue-deep: #0a3a7a;
  --blue-glow: rgba(47,143,239,.35);
  --danger: #ef5c5c;
  --radius: 10px;
  --radius-lg: 16px;
  --maxw: 1240px;
  font-synthesis: none;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-size:15px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:'Barlow Condensed','Inter',sans-serif;
  font-weight:700;
  letter-spacing:.01em;
  margin:0 0 .4em;
  color:var(--ink);
}
h1{font-size:clamp(34px,5vw,58px); line-height:1.05; text-transform:uppercase;}
h2{font-size:clamp(24px,3vw,34px); text-transform:uppercase;}
h3{font-size:19px;}
p{margin:0 0 1em; color:var(--ink-soft);}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.container{max-width:var(--maxw); margin:0 auto; padding:0 22px;}
button{font-family:inherit; cursor:pointer;}
::selection{background:var(--blue); color:#04101f;}

/* Focus visibility for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline:2px solid var(--blue-2); outline-offset:2px;
}

/* ---------- Top bar ---------- */
.top-strip{
  background:var(--blue-deep);
  color:#dceafe;
  font-size:12.5px;
  padding:7px 0;
}
.top-strip .container{display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap;}
.top-strip a{color:#fff; font-weight:600;}
.top-strip .ts-item{display:flex; align-items:center; gap:6px;}
.top-strip svg{width:14px; height:14px; flex:none;}

/* ---------- Header ---------- */
header.main{
  position:sticky; top:0; z-index:40;
  background:rgba(6,11,19,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-row{display:flex; align-items:center; gap:24px; padding:12px 22px;}
.logo-link{display:flex; align-items:center; gap:10px; flex:none;}
.logo-link img{height:40px; width:auto;}
.header-nav{display:flex; gap:22px; flex:1; align-items:center;}
.header-nav a{
  font-size:13px; font-weight:600; letter-spacing:.04em; text-transform:uppercase;
  color:var(--ink-soft); white-space:nowrap;
}
.header-nav a:hover{color:var(--ink);}
.header-actions{display:flex; align-items:center; gap:10px; margin-left:auto;}
.icon-btn{
  display:flex; align-items:center; gap:8px;
  background:var(--panel); border:1px solid var(--line-strong);
  color:var(--ink); padding:9px 14px; border-radius:999px; font-size:13px; font-weight:600;
}
.icon-btn:hover{border-color:var(--blue);}
.icon-btn svg{width:17px; height:17px; stroke:currentColor;}
.cart-count{
  background:var(--blue); color:#04101f; font-size:11px; font-weight:800;
  min-width:18px; height:18px; border-radius:50%; display:flex; align-items:center; justify-content:center; padding:0 4px;
}
.burger{display:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:
    radial-gradient(900px 500px at 85% 0%, rgba(47,143,239,.16), transparent 60%),
    radial-gradient(700px 500px at 10% 100%, rgba(10,58,122,.35), transparent 60%),
    var(--bg);
  border-bottom:1px solid var(--line);
}
.hero-inner{
  padding:64px 22px 48px; max-width:var(--maxw); margin:0 auto; position:relative; z-index:2;
  display:grid; grid-template-columns:1.15fr 1fr; gap:46px; align-items:center;
}
.hero-copy{max-width:560px;}
.hero-photo{
  position:relative; border-radius:var(--radius-lg); overflow:hidden;
  border:1px solid var(--line-strong); box-shadow:0 30px 60px -25px rgba(0,0,0,.7);
  aspect-ratio:16/11;
}
.hero-photo img{width:100%; height:100%; object-fit:cover; display:block;}
.hero-photo-tag{
  position:absolute; left:14px; bottom:14px; background:rgba(6,11,19,.78); backdrop-filter:blur(6px);
  border:1px solid var(--line-strong); color:var(--ink); font-size:12px; font-weight:700;
  padding:8px 13px; border-radius:8px; display:flex; align-items:center; gap:7px;
}
.hero-photo-tag svg{width:15px; height:15px; color:var(--blue-2); flex:none;}
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  color:var(--blue-2); font-weight:700; font-size:13px; letter-spacing:.08em; text-transform:uppercase;
  margin-bottom:16px;
}
.hero-eyebrow::before{content:''; width:26px; height:2px; background:var(--blue-2); display:inline-block;}
.hero h1{margin-bottom:18px;}
.hero h1 span{color:var(--blue-2);}
.hero p.lead{font-size:17px; color:#d3dded; max-width:560px;}
.hero-ctas{display:flex; gap:14px; margin-top:30px; flex-wrap:wrap;}
.hero-strip{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  border-top:1px solid var(--line); position:relative; z-index:2;
}
.hero-strip-item{
  padding:20px 22px; border-right:1px solid var(--line);
  background:rgba(6,11,19,.55);
}
.hero-strip-item:last-child{border-right:none;}
.hero-strip-item b{display:block; font-family:'Barlow Condensed'; font-size:26px; color:var(--blue-2);}
.hero-strip-item span{font-size:12.5px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:.04em;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:13px 24px; border-radius:8px; font-weight:700; font-size:13.5px;
  letter-spacing:.03em; text-transform:uppercase; border:1px solid transparent; transition:transform .12s ease;
}
.btn svg{width:18px; height:18px;}
.btn:active{transform:scale(.98);}
.btn-primary{background:linear-gradient(135deg,var(--blue),#1665c9); color:#fff; box-shadow:0 8px 22px -8px var(--blue-glow);}
.btn-primary:hover{filter:brightness(1.08);}
.btn-outline{background:transparent; border-color:var(--line-strong); color:var(--ink);}
.btn-outline:hover{border-color:var(--blue-2); color:var(--blue-2);}
.btn-whats{background:#1fae4e; color:#fff;}
.btn-whats:hover{filter:brightness(1.08);}
.btn-block{width:100%;}
.btn-sm{padding:9px 14px; font-size:12px;}
.btn[disabled]{opacity:.5; cursor:not-allowed;}

/* ---------- Benefits strip ---------- */
.benefits-strip{background:var(--bg-alt); border-bottom:1px solid var(--line); padding:22px 0;}
.benefits-row{display:flex; flex-wrap:wrap; gap:26px; justify-content:space-between;}
.benefit-item{
  display:flex; align-items:center; gap:10px; font-size:13px; font-weight:600; color:var(--silver);
  flex:1; min-width:180px;
}
.benefit-item svg{width:26px; height:26px; color:var(--blue-2); flex:none;}

/* ---------- Section shell ---------- */
section{padding:64px 0;}
.section-head{max-width:640px; margin-bottom:36px;}
.section-head .kicker{
  color:var(--blue-2); font-weight:700; font-size:12.5px; letter-spacing:.09em; text-transform:uppercase;
  display:block; margin-bottom:10px;
}
.section-head p{margin-top:10px;}

/* ---------- Category nav ---------- */
.cat-nav{position:sticky; top:65px; z-index:30; background:var(--bg); border-bottom:1px solid var(--line); padding:14px 0;}
.cat-row{display:flex; gap:10px; overflow-x:auto; padding-bottom:2px; scrollbar-width:thin;}
.cat-pill{
  flex:none; padding:9px 18px; border-radius:999px; border:1px solid var(--line-strong);
  background:var(--panel); color:var(--ink-soft); font-size:12.5px; font-weight:700;
  letter-spacing:.03em; text-transform:uppercase; white-space:nowrap;
}
.cat-pill.active, .cat-pill:hover{background:var(--blue); border-color:var(--blue); color:#04101f;}

/* ---------- Product grid ---------- */
.catalog{padding-top:44px;}
.grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:20px;}
.card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:20px; display:flex; flex-direction:column; gap:12px;
}
.card-media{
  height:150px; border-radius:var(--radius); background:linear-gradient(150deg,var(--panel-2),#0a1524);
  display:flex; align-items:center; justify-content:center; color:var(--blue-2); position:relative; overflow:hidden;
  border:1px solid var(--line);
}
.card-media svg{width:56px; height:56px; opacity:.85;}
.card-media.has-photo{padding:0;}
.card-media.has-photo img{width:100%; height:100%; object-fit:cover; border-radius:calc(var(--radius) - 1px);}
.card-media.has-photo.contain{background:linear-gradient(150deg,#eef1f5,#dfe4ea); padding:14px;}
.card-media.has-photo.contain img{object-fit:contain; border-radius:0;}
.card-tag{
  position:absolute; top:10px; left:10px; background:rgba(47,143,239,.16); border:1px solid var(--blue);
  color:var(--blue-2); font-size:10.5px; font-weight:800; letter-spacing:.05em; text-transform:uppercase;
  padding:4px 9px; border-radius:999px;
}
.card h3{font-size:18px; text-transform:none; margin-bottom:2px;}
.card .card-desc{font-size:12.8px; color:var(--ink-soft); margin-bottom:2px; min-height:34px;}
.dims-row{display:flex; gap:10px; margin-bottom:2px;}
.dims-label{display:block; font-size:11px; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.05em; margin-bottom:4px; font-weight:700;}
.card input[type=number], .card select, .field input, .field select{
  width:100%; background:var(--bg-alt); border:1px solid var(--line-strong); color:var(--ink);
  padding:9px 10px; border-radius:7px; font-size:13.5px; font-family:inherit;
}
.card input[type=number]:focus, .card select:focus{border-color:var(--blue);}
.calc-hint{font-size:11.5px; color:var(--ink-faint); font-style:italic;}
.area-total{
  font-size:13px; color:var(--silver); background:var(--bg-alt); border:1px dashed var(--line-strong);
  border-radius:7px; padding:9px 10px; min-height:36px; display:flex; align-items:center;
}
.price-row{display:flex; align-items:baseline; justify-content:space-between; gap:8px; margin-top:auto;}
.price-row .price{font-family:'Barlow Condensed'; font-size:24px; color:#fff; font-weight:700;}
.price-row .price small{font-size:12px; color:var(--ink-faint); font-weight:500; font-family:'Inter';}
.qty-box{display:flex; align-items:center; border:1px solid var(--line-strong); border-radius:8px; overflow:hidden;}
.qty-box button{background:var(--bg-alt); color:var(--ink); border:none; width:32px; height:32px; font-size:16px;}
.qty-box span{width:34px; text-align:center; font-weight:700;}
.card-actions{display:flex; gap:8px;}
.card-actions .btn{flex:1;}
.quote-badge{
  font-size:11px; font-weight:800; letter-spacing:.04em; text-transform:uppercase;
  color:#ffcf7a; background:rgba(255,196,84,.12); border:1px solid rgba(255,196,84,.4);
  padding:5px 10px; border-radius:999px; display:inline-flex; width:fit-content;
}

/* ---------- Calculator explainer ---------- */
.calc-explainer{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:26px 28px; display:grid; grid-template-columns:1.1fr 1fr; gap:30px; align-items:center;
}
.calc-explainer ol{margin:0; padding-left:20px; color:var(--ink-soft); font-size:14px;}
.calc-explainer li{margin-bottom:10px;}
.calc-explainer li b{color:var(--ink);}
.thickness-table{width:100%; border-collapse:collapse; font-size:13.5px;}
.thickness-table th, .thickness-table td{padding:10px 12px; border-bottom:1px solid var(--line); text-align:left;}
.thickness-table th{color:var(--ink-faint); font-size:11px; text-transform:uppercase; letter-spacing:.05em;}
.thickness-table td b{color:var(--blue-2);}

/* ---------- Applications ---------- */
.apps-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:16px;}
.app-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px; text-align:left;
}
.app-card svg{width:30px; height:30px; color:var(--blue-2); margin-bottom:12px;}
.app-card h4{font-size:15px; margin-bottom:4px; text-transform:none; font-family:'Inter'; font-weight:700;}
.app-card p{font-size:12.8px; margin:0;}

/* ---------- History / About ---------- */
.history{background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.history-inner{display:grid; grid-template-columns:1.4fr 1fr; gap:44px; align-items:start;}
.history-list{list-style:none; padding:0; margin:18px 0; display:grid; grid-template-columns:1fr 1fr; gap:10px;}
.history-list li{display:flex; gap:9px; align-items:flex-start; font-size:13.6px; color:var(--ink);}
.history-list svg{width:18px; height:18px; color:var(--blue-2); flex:none; margin-top:1px;}
.contact-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px;
}
.contact-card svg{width:34px; height:34px; color:#1fae4e; margin-bottom:12px;}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,#0a1c34,#0a3a7a); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.cta-band-inner{display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap;}
.cta-band h3{margin-bottom:6px; color:#fff;}
.cta-band p{color:#c8dcf7; margin:0; max-width:520px;}

/* ---------- Footer ---------- */
footer{background:var(--bg-alt); padding-top:50px;}
.foot-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:30px; padding-bottom:30px;}
.foot-grid h4{font-size:13px; text-transform:uppercase; letter-spacing:.05em; color:var(--ink); margin-bottom:14px;}
.foot-grid a, .foot-grid .fp{display:block; font-size:13px; color:var(--ink-soft); margin-bottom:9px;}
.foot-grid a:hover{color:var(--blue-2);}
.foot-about{font-size:13px; color:var(--ink-soft); max-width:280px;}
.foot-bottom{border-top:1px solid var(--line); padding:16px 0; font-size:12px; color:var(--ink-faint); text-align:center;}
.foot-logo{height:34px; margin-bottom:14px;}

/* ---------- WhatsApp float ---------- */
.wpp-float{
  position:fixed; right:20px; bottom:20px; z-index:50;
  width:58px; height:58px; border-radius:50%; background:#1fae4e; display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 26px -6px rgba(31,174,78,.6);
}
.wpp-float svg{width:30px; height:30px;}

/* ---------- Overlay / Drawer ---------- */
.overlay{position:fixed; inset:0; background:rgba(3,6,11,.65); backdrop-filter:blur(2px); z-index:60; display:none;}
.overlay.show{display:block;}
.drawer{
  position:fixed; top:0; right:-440px; width:420px; max-width:92vw; height:100%; background:var(--panel);
  border-left:1px solid var(--line-strong); z-index:61; display:flex; flex-direction:column; transition:right .25s ease;
}
.drawer.open{right:0;}
.drawer-head{display:flex; justify-content:space-between; align-items:center; padding:18px 20px; border-bottom:1px solid var(--line);}
.drawer-close{background:none; border:none; color:var(--ink-soft); padding:4px;}
.drawer-close svg{width:20px; height:20px;}
.drawer-body{flex:1; overflow-y:auto; padding:16px 20px;}
.drawer-foot{padding:16px 20px; border-top:1px solid var(--line);}
.empty-msg{color:var(--ink-faint); font-size:13.5px; text-align:center; padding:40px 10px;}

.cart-item{display:flex; gap:12px; padding:14px 0; border-bottom:1px solid var(--line);}
.cart-item-media{
  width:56px; height:56px; border-radius:8px; background:var(--bg-alt); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center; color:var(--blue-2); flex:none;
}
.cart-item-media svg{width:26px; height:26px;}
.cart-item-info{flex:1; min-width:0;}
.cart-item-info .nm{font-weight:700; font-size:13.6px; margin-bottom:2px;}
.cart-item-info .meta{font-size:11.8px; color:var(--ink-faint); margin-bottom:6px;}
.cart-item-info .row2{display:flex; align-items:center; justify-content:space-between;}
.cart-remove{background:none; border:none; color:var(--danger); font-size:12px; font-weight:700;}
.cart-summary-row{display:flex; justify-content:space-between; font-size:13.5px; margin-bottom:6px; color:var(--ink-soft);}
.cart-summary-row.total{font-size:17px; color:#fff; font-weight:800; margin-top:10px; padding-top:10px; border-top:1px solid var(--line);}

/* ---------- Modal ---------- */
.modal{
  position:fixed; top:50%; left:50%; transform:translate(-50%,-50%); width:460px; max-width:92vw;
  background:var(--panel); border:1px solid var(--line-strong); border-radius:var(--radius-lg); z-index:62;
  display:none; max-height:86vh; overflow:hidden; flex-direction:column;
}
.modal.show{display:flex;}
.modal-head{display:flex; justify-content:space-between; align-items:center; padding:18px 20px; border-bottom:1px solid var(--line);}
.modal-body{padding:20px; overflow-y:auto;}
.field{margin-bottom:14px;}
.field label{display:block; font-size:12px; font-weight:700; color:var(--ink-soft); margin-bottom:6px; text-transform:uppercase; letter-spacing:.03em;}

/* ---------- Toast ---------- */
.toast{
  position:fixed; bottom:24px; left:50%; transform:translateX(-50%) translateY(20px); z-index:80;
  background:#101f34; border:1px solid var(--blue); color:#fff; padding:12px 20px; border-radius:999px;
  font-size:13.5px; font-weight:600; opacity:0; pointer-events:none; transition:all .25s ease;
  display:flex; align-items:center; gap:8px;
}
.toast svg{width:18px; height:18px; color:#57e08a;}
.toast.show{opacity:1; transform:translateX(-50%) translateY(0);}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .header-nav{display:none;}
  .burger{display:flex; background:var(--panel); border:1px solid var(--line-strong); border-radius:8px; width:38px; height:38px; align-items:center; justify-content:center; color:var(--ink);}
  .burger svg{width:20px; height:20px;}
  .header-nav.mobile-open{
    display:flex; flex-direction:column; position:absolute; top:64px; left:0; right:0; background:var(--bg);
    border-bottom:1px solid var(--line); padding:16px 22px; gap:14px; z-index:45;
  }
  .hero-inner{grid-template-columns:1fr; padding:40px 20px 36px; gap:28px;}
  .hero-copy{max-width:none;}
  .hero-photo{aspect-ratio:16/9; order:-1;}
  .hero-strip{grid-template-columns:repeat(2,1fr);}
  .hero-strip-item:nth-child(2){border-right:none;}
  .cat-nav{top:57px;}
  .calc-explainer{grid-template-columns:1fr; padding:22px;}
  .history-inner{grid-template-columns:1fr;}
  .history-list{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .cta-band-inner{text-align:left;}
  section{padding:44px 0;}
}
@media (max-width:560px){
  .foot-grid{grid-template-columns:1fr;}
  .header-row{gap:12px; padding:10px 16px;}
  .icon-btn span{display:none;}
  .top-strip .container{justify-content:center; gap:16px; padding:0 16px;}
  .top-strip{font-size:11.5px;}
  .container{padding:0 16px;}
  .hero-ctas{flex-direction:column; align-items:stretch;}
  .hero-ctas .btn{width:100%;}
  .hero-strip{grid-template-columns:1fr 1fr;}
  .hero-strip-item{padding:16px;}
  .card-media{height:130px;}
  .apps-grid{grid-template-columns:1fr 1fr;}
  .drawer{width:100%; max-width:100vw;}
  h1{font-size:30px;}
}
@media (max-width:400px){
  .apps-grid{grid-template-columns:1fr;}
}

@media (prefers-reduced-motion: reduce){
  *{transition:none !important; scroll-behavior:auto !important;}
}