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

:root{
  --bg-dark:#141922;
  --bg-dark-2:#1a202a;
  --panel:rgba(34, 40, 52, 0.62);
  --panel-strong:rgba(28, 34, 45, 0.78);
  --panel-soft:rgba(255,255,255,0.06);
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(255,255,255,0.16);
  --text:#f5f7fb;
  --muted:#b8c0cf;
  --muted-2:#8d97ab;
  --white:#ffffff;
  --navy:#0f1b2d;
  --navy-2:#152235;
  --accent:#e13535;
  --success:#bfe7cf;
  --shadow:0 20px 70px rgba(0,0,0,0.28);
  --shadow-soft:0 10px 30px rgba(0,0,0,0.18);
  --blur:18px;
  --radius-xl:28px;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --container:calc(100% - 48px);
}

html,body{
  width:100%;
  min-height:100%;
  font-family:'Inter',sans-serif;
  color:var(--text);
  background:#0e131b;
}

body{
  min-height:100vh;
}

a{
  text-decoration:none;
  color:inherit;
}

button,
input{
  font-family:'Inter',sans-serif;
  outline:none;
  border:none;
}

.cart-scene{
  background-attachment:fixed;
  position:relative;
  min-height:100vh;
  padding:20px 24px 26px;
  overflow:hidden;
  background:
    linear-gradient(rgba(8,12,18,0.34), rgba(8,12,18,0.58)),
    url("img/bg.jpg") center center / cover no-repeat;
}

.cart-bg-overlay{
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 78% 35%, rgba(255,170,70,0.16), transparent 26%),
    radial-gradient(circle at 18% 72%, rgba(68,121,255,0.10), transparent 28%),
    linear-gradient(180deg, rgba(10,12,18,0.18), rgba(10,12,18,0.52));
  pointer-events:none;
}

.cart-topbar,
.cart-main-shell{
  position:relative;
  z-index:2;
}

.glass-panel{
  background:
    linear-gradient(180deg, rgba(61, 68, 82, 0.34), rgba(26, 31, 40, 0.48)),
    rgba(25, 30, 39, 0.52);
  backdrop-filter:blur(var(--blur));
  -webkit-backdrop-filter:blur(var(--blur));
  border:1px solid var(--line);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.07),
    inset 0 -1px 0 rgba(255,255,255,0.03),
    var(--shadow);
}

.cart-topbar{
  width:100%;
  min-height:86px;
  border-radius:26px;
  background:
    linear-gradient(90deg, rgba(44,50,61,0.92), rgba(32,37,47,0.82)),
    rgba(30,35,45,0.90);
  border:1px solid rgba(255,255,255,0.08);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:0 28px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.06),
    0 18px 45px rgba(0,0,0,0.20);
}

.brand-box{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:220px;
}

.brand-mark{
  position:relative;
  width:32px;
  height:34px;
}

.mark-left,
.mark-right{
  position:absolute;
  top:0;
  width:14px;
  border-radius:2px;
}

.mark-left{
  left:3px;
  height:24px;
  background:linear-gradient(180deg,#f8fafc,#d0d7e4);
  transform:skewY(-12deg);
}

.mark-right{
  right:3px;
  height:30px;
  background:linear-gradient(180deg,#d82e37,#9f1c22);
  transform:skewY(-12deg);
}

.brand-name{
  font-size:13px;
  letter-spacing:3px;
  font-weight:600;
  white-space:nowrap;
}

.brand-rk{
  color:#ffffff;
}

.brand-door{
  color:#d83438;
  margin-left:2px;
}

.brand-systems{
  color:#ffffff;
  opacity:.88;
  margin-left:2px;
}

.brand-subtitle{
  margin-top:4px;
  font-size:11px;
  color:var(--muted-2);
  letter-spacing:.2px;
}

.cart-progress{
  display:flex;
  align-items:center;
  justify-content:center;
  flex:1;
  min-width:300px;
}

.progress-step{
  display:flex;
  align-items:center;
  gap:10px;
  color:#a8b0be;
  white-space:nowrap;
}

.progress-step.active{
  color:#ffffff;
}

.step-circle{
  width:28px;
  height:28px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,0.20);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  font-weight:700;
  background:rgba(255,255,255,0.03);
  color:inherit;
}

.progress-step.active .step-circle{
  background:#ffffff;
  color:#111827;
  border-color:#ffffff;
  box-shadow:0 8px 18px rgba(255,255,255,0.18);
}

.step-label{
  font-size:15px;
  font-weight:500;
}

.progress-line{
  width:68px;
  height:1px;
  background:rgba(255,255,255,0.20);
  margin:0 14px;
}

.topbar-actions{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:220px;
  justify-content:flex-end;
}

.icon-circle{
  width:46px;
  height:46px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.08);
  color:#ffffff;
  cursor:pointer;
  transition:.25s ease;
}

.icon-circle svg{
  width:21px;
  height:21px;
}

.icon-circle:hover{
  transform:translateY(-2px);
  background:rgba(255,255,255,0.08);
  box-shadow:0 8px 18px rgba(0,0,0,0.18);
}

.quote-btn{
  min-width:176px;
  height:54px;
  border-radius:18px;
  background:linear-gradient(180deg,#ffffff,#eaedf3);
  color:#111827;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  font-weight:800;
  font-size:15px;
  letter-spacing:.4px;
  box-shadow:0 10px 24px rgba(0,0,0,0.16);
  transition:.25s ease;
}

.quote-btn svg{
  width:18px;
  height:18px;
}

.quote-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(0,0,0,0.22);
}

.cart-main-shell{
  margin-top:16px;
}

.cart-hero{
  width:100%;
  border-radius:28px;
  padding:28px 34px;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:26px;
}

.hero-left h1{
  font-size:22px;
  font-weight:800;
  letter-spacing:-0.5px;
  margin-bottom:8px;
}

.hero-left p{
  color:var(--muted);
  font-size:12px;
  line-height:1.45;
}

.hero-features{
  display:flex;
  align-items:flex-start;
  gap:34px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.hero-feature{
  display:flex;
  align-items:flex-start;
  gap:12px;
  min-width:170px;
}

.feature-icon{
  width:34px;
  height:34px;
  border-radius:12px;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.07);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#dfe5f0;
  flex:0 0 auto;
}

.feature-icon svg{
  width:18px;
  height:18px;
}

.hero-feature strong{
  display:block;
  font-size:16px;
  font-weight:700;
  margin-bottom:4px;
}

.hero-feature span{
  display:block;
  font-size:14px;
  color:var(--muted);
}

.cart-layout{
  margin-top:16px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 450px;
  gap:18px;
  align-items:start;
}

.cart-left{
  min-width:0;
}

.cart-product{
  border-radius:28px;
  padding:18px;
  display:grid;
  grid-template-columns:610px minmax(0,1fr);
  gap:20px;
 
}

.product-media{
  border-radius:22px;
  overflow:hidden;
  background:rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.06);
  min-height:480px;
}

.product-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transition:transform .5s ease;
}

.cart-product:hover .product-media img{
  transform:scale(1.03);
}

.product-details{
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  padding:10px 10px 4px 6px;
  min-width:0;
}

.product-head h2{
  font-size:22px;
  font-weight:600;
  letter-spacing:-0.3px;
  margin-bottom:14px;
}

.product-badge{
  display:inline-flex;
  align-items:center;
  padding:10px 16px;
  border-radius:999px;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.10);
  color:#dfe5f0;
  font-size:14px;
  font-weight:500;
}

.product-specs{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(2,minmax(180px,1fr));
  gap:26px 34px;
}

.spec-box{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.spec-title{
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.12em;
  color:var(--muted-2);
}

.spec-box strong{
  font-size:15px;
  font-weight:500;

  color:#f4f7fb;
}

.spec-divider{
  margin:28px 0 22px;
  width:100%;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,0.14), rgba(255,255,255,0.04));
}

.product-bottom{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
}

.product-controls{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}

.qty-wrap{
  display:flex;
  align-items:center;
  gap:14px;
}

.control-label{
  font-size:13px;
  color:var(--muted-2);
  text-transform:uppercase;
  letter-spacing:.12em;
  font-weight:600;
}

.qty-box{
  min-width:128px;
  height:48px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 10px;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.04);
}

.qty-box button{
  width:34px;
  height:34px;
  border-radius:10px;
  background:transparent;
  color:#ffffff;
  font-size:24px;
  cursor:pointer;
  transition:.2s ease;
}

.qty-box button:hover{
  background:rgba(255,255,255,0.08);
}

.qty-box span{
  font-size:18px;
  font-weight:700;
}

.control-divider{
  width:1px;
  height:26px;
  background:rgba(255,255,255,0.14);
}

.text-action{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:#f5f7fb;
  font-size:16px;
  font-weight:600;
  opacity:.92;
  transition:.22s ease;
}

.text-action svg{
  width:18px;
  height:18px;
}

.text-action:hover{
  opacity:1;
  transform:translateY(-1px);
}

.text-action.remove:hover{
  color:#ffd1d1;
}

.product-price{
  font-size:28px;
  font-weight:800;
  letter-spacing:-0.4px;
  color:#ffffff;
  text-shadow:0 4px 18px rgba(0,0,0,0.18);
}

.cart-lower-actions{
  margin-top:16px;
}

.continue-btn{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-height:54px;
  padding:0 22px;
  border-radius:16px;
  color:#f5f7fb;
  background:rgba(18,24,34,0.44);
  border:1px solid rgba(255,255,255,0.14);
  box-shadow:var(--shadow-soft);
  font-weight:600;
  transition:.25s ease;
}

.continue-btn svg{
  width:18px;
  height:18px;
}

.continue-btn:hover{
  transform:translateY(-2px);
  background:rgba(255,255,255,0.08);
}

.bottom-benefits{
  margin-top:16px;
  border-radius:24px;
  padding:18px 20px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
}

.benefit-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 12px;
  border-radius:16px;
  transition:.25s ease;
}

.benefit-item:hover{
  background:rgba(255,255,255,0.04);
}

.benefit-icon{
  width:48px;
  height:48px;
  border-radius:14px;
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#edf2fa;
  flex:0 0 auto;
}

.benefit-icon svg{
  width:22px;
  height:22px;
}

.benefit-item strong{
  display:block;
  font-size:16px;
  font-weight:700;
  margin-bottom:4px;
}

.benefit-item span{
  display:block;
  font-size:14px;
  color:var(--muted);
}

.cart-right{
  display:flex;
  flex-direction:column;
  gap:16px;
}

.summary-box,
.info-box{
  border-radius:26px;
  padding:26px;
}

.summary-box h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:24px;
}

.summary-lines{
  display:flex;
  flex-direction:column;
  gap:16px;
}

.summary-line{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
}

.summary-line span{
  color:#d6dde8;
}

.summary-line strong{
  color:#ffffff;
  font-size:16px;
}

.summary-line .free{
  color:#ffffff;
  letter-spacing:.4px;
}

.summary-divider{
  height:1px;
  background:rgba(255,255,255,0.14);
  margin:24px 0;
}

.summary-total{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
  margin-bottom:24px;
}

.summary-total span{
  font-size:15px;
  color:#e7ebf4;
  font-weight:600;
}

.summary-total strong{
  font-size:24px;
  font-weight:800;
  letter-spacing:-0.4px;
}

.promo-wrap{
  display:grid;
  grid-template-columns:1fr 88px;
  gap:10px;
  margin-bottom:16px;
}

.promo-wrap input{
  height:54px;
  border-radius:15px;
  padding:0 18px;
  background:rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.10);
  color:#ffffff;
  font-size:13px;
}

.promo-wrap input::placeholder{
  color:#98a2b3;
}

.promo-wrap button{
  height:54px;
  border-radius:15px;
  background:linear-gradient(180deg,#161d2a,#0f1623);
  border:1px solid rgba(255,255,255,0.10);
  color:#ffffff;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:.2s ease;
}

.promo-wrap button:hover{
  transform:translateY(-1px);
  background:linear-gradient(180deg,#1c2434,#131b29);
}

.checkout-btn{
  width:100%;
  height:62px;
  border-radius:18px;
  background:linear-gradient(180deg,#ffffff,#ebeff5);
  color:#121826;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  box-shadow:0 14px 30px rgba(0,0,0,0.18);
  transition:.25s ease;
}

.checkout-btn svg{
  width:18px;
  height:18px;
}

.checkout-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 36px rgba(0,0,0,0.22);
}

.secure-note{
  margin-top:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  color:var(--muted);
  font-size:14px;
}

.secure-note svg{
  width:16px;
  height:16px;
}

.info-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:20px;
}

.info-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:14px;
  font-weight:600;
}

.info-title svg{
  width:22px;
  height:22px;
  color:#eef2f7;
}

.info-head a{
  color:#c9d1dc;
  font-size:13px;
  font-weight:600;
  transition:.2s ease;
}

.info-head a:hover{
  color:#ffffff;
}

.delivery-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  margin-bottom:18px;
}

.delivery-grid > div{
  position:relative;
  padding-right:14px;
}

.delivery-grid > div:first-child::after{
  content:"";
  position:absolute;
  top:4px;
  right:0;
  width:1px;
  height:42px;
  background:rgba(255,255,255,0.14);
}

.delivery-grid span{
  display:block;
  color:var(--muted);
  font-size:15px;
  margin-bottom:8px;
}

.delivery-grid strong{
  display:block;
  color:#ffffff;
  font-size:18px;
  font-weight:600;
}

.info-text{
  color:#d0d8e3;
  font-size:14px;
  line-height:1.55;
}

/* SCROLL SAFETY */
img{
  max-width:100%;
}

/* RESPONSIVE */
@media (max-width: 1600px){
  .cart-product{
    grid-template-columns:480px minmax(0,1fr);
  }

  .product-media{
    min-height:430px;
  }

  .bottom-benefits{
    grid-template-columns:repeat(2,1fr);
  }
}

@media (max-width: 1380px){
  .cart-layout{
    grid-template-columns:1fr;
  }

  .cart-right{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:16px;
  }

  .summary-box{
    grid-column:1 / -1;
  }

  .hero-features{
    gap:18px;
  }

  .cart-hero{
    flex-direction:column;
    align-items:flex-start;
  }
}

@media (max-width: 1180px){
  .cart-topbar{
    flex-wrap:wrap;
    justify-content:center;
    padding:18px 20px;
    height:auto;
  }

  .brand-box,
  .topbar-actions{
    width:100%;
    justify-content:center;
  }

  .cart-progress{
    order:3;
    width:100%;
    flex-wrap:wrap;
  }

  .progress-line{
    width:36px;
    margin:0 8px;
  }

  .cart-product{
    grid-template-columns:1fr;
  }

  .product-media{
    min-height:360px;
  }

  .cart-right{
    grid-template-columns:1fr;
  }
}

@media (max-width: 900px){
  .cart-scene{
    padding:14px;
  }

  .cart-hero{
    padding:22px 20px;
  }

  .hero-left h1{
    font-size:20px;
  }

  .hero-left p{
    font-size:12px;
  }

  .cart-product{
    padding:14px;
  }

  .product-details{
    padding:6px 4px 2px;
  }

  .product-head h2{
    font-size:22px;
  }

  .product-specs{
    grid-template-columns:1fr 1fr;
    gap:20px 20px;
  }

  .summary-box,
  .info-box{
    padding:22px 18px;
  }

  .bottom-benefits{
    grid-template-columns:1fr;
  }
}

@media (max-width: 680px){
  .cart-topbar{
    border-radius:22px;
  }

  .quote-btn{
    min-width:150px;
    height:50px;
    font-size:14px;
  }

  .cart-progress{
    justify-content:flex-start;
    overflow-x:auto;
    padding-bottom:6px;
  }

  .cart-progress::-webkit-scrollbar{
    height:4px;
  }

  .cart-progress::-webkit-scrollbar-thumb{
    background:rgba(255,255,255,0.16);
    border-radius:20px;
  }

  .progress-step{
    gap:8px;
  }

  .step-label{
    font-size:13px;
  }

  .progress-line{
    width:24px;
  }

  .hero-features{
    flex-direction:column;
    align-items:flex-start;
  }

  .product-media{
    min-height:260px;
  }

  .product-specs{
    grid-template-columns:1fr;
  }

  .product-bottom{
    flex-direction:column;
    align-items:flex-start;
  }

  .product-controls{
    width:100%;
    gap:12px;
  }

  .control-divider{
    display:none;
  }

  .qty-wrap{
    width:100%;
    justify-content:space-between;
  }

  .qty-box{
    min-width:150px;
  }

  .product-price{
    font-size:32px;
  }

  .promo-wrap{
    grid-template-columns:1fr;
  }

  .delivery-grid{
    grid-template-columns:1fr;
  }

  .delivery-grid > div:first-child::after{
    display:none;
  }

  .benefit-item{
    align-items:flex-start;
  }
}