:root{
  --blue:#123f73;--blue-dark:#092c52;--blue-light:#0b4ea8;
  --green:#148a45;--green-dark:#0e6d36;--bg:#f3f6fa;
  --text:#172338;--muted:#66758b;--line:#dfe7f0;--white:#fff;
}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
body:before{content:"";display:block;height:4px;background:linear-gradient(90deg,#0b4ea8,#2b76c9)}
button,input{font:inherit}.hidden{display:none!important}
.topbar{height:70px;background:var(--blue-dark);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:sticky;top:0;z-index:50;box-shadow:0 4px 18px #092c5226}
.brand{font-size:24px;font-weight:900}.brand span{color:#8fc5ff}
.cart-btn{background:#fff;color:var(--blue);border:0;border-radius:10px;padding:11px 16px;font-weight:800;cursor:pointer}.cart-btn b{background:var(--green);color:#fff;border-radius:20px;padding:2px 7px;margin-left:5px}
.container{max-width:1150px;margin:30px auto;padding:0 18px}.product-page{background:#fff;border:1px solid var(--line);border-radius:20px;display:grid;grid-template-columns:1fr 1fr;gap:35px;padding:30px;box-shadow:0 10px 30px #123f730d}
.gallery{min-width:0}.main-image-wrap{height:500px;border:1px solid #edf1f5;border-radius:16px;background:linear-gradient(180deg,#fbfcfe,#f5f8fb);display:flex;align-items:center;justify-content:center;overflow:hidden}.main-image-wrap img{width:100%;height:100%;object-fit:contain;padding:18px}
.thumbs{display:flex;gap:10px;margin-top:12px}.thumbs button{width:82px;height:82px;padding:4px;background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer}.thumbs button:hover{border-color:#8da8c5}.thumbs img{width:100%;height:100%;object-fit:contain}
.product-info{padding:8px 0}.eyebrow{display:inline-block;background:#eaf3ff;color:var(--blue-light);padding:6px 10px;border-radius:999px;font-size:11px;font-weight:900;letter-spacing:.5px}.product-info h1{font-size:32px;line-height:1.15;margin:14px 0 12px}.description{color:var(--muted);line-height:1.6;font-size:14px}
.price-box{margin:22px 0}.old-price{text-decoration:line-through;color:#7b8798;font-size:16px}.discount{display:inline-block;margin-top:5px;color:var(--green-dark);background:#e8f7ee;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:900}.final-price{font-size:34px;font-weight:900;color:var(--green);margin-top:8px}
.quantity-box{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:15px 0}.qty{display:flex;align-items:center;gap:14px}.qty button{width:34px;height:34px;border:1px solid #cbd5e1;background:#fff;border-radius:8px;cursor:pointer;font-weight:900}.buy-btn,.primary-btn,.confirm-btn{width:100%;background:var(--green);color:#fff;border:0;border-radius:10px;padding:14px;font-weight:900;cursor:pointer}.buy-btn:hover,.primary-btn:hover,.confirm-btn:hover{background:var(--green-dark)}
.features{margin-top:25px}.features h3{margin-bottom:12px}.feature-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}.feature-grid div{padding:9px 5px;border-bottom:1px solid var(--line);font-size:13px;display:flex;flex-direction:column;gap:3px}.feature-grid span{color:var(--muted)}
.overlay{display:none;position:fixed;inset:0;background:#05142699;z-index:80}.overlay.active{display:block}.cart{position:fixed;right:0;top:0;height:100vh;width:min(430px,100%);background:#fff;z-index:90;transform:translateX(100%);transition:.25s;display:flex;flex-direction:column;box-shadow:-15px 0 40px #0002}.cart.active{transform:translateX(0)}.cart-head{background:var(--blue-dark);color:#fff;padding:18px 20px;display:flex;justify-content:space-between;align-items:center}.cart-head h2{margin:0}.cart-head button{border:0;background:#ffffff18;color:#fff;width:34px;height:34px;border-radius:8px;font-size:22px;cursor:pointer}.cart-items{flex:1;overflow:auto;padding:16px 18px}.cart-item{display:grid;grid-template-columns:70px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid #edf1f5}.cart-item img{width:70px;height:70px;object-fit:contain;border:1px solid #edf1f5;border-radius:10px}.cart-name{font-weight:800;font-size:14px}.cart-price{color:var(--green);font-weight:800;margin-top:5px}.cart-controls{display:flex;align-items:center;gap:7px;margin-top:8px}.cart-controls button{width:29px;height:29px;border:1px solid #cbd5e1;background:#fff;border-radius:7px;cursor:pointer}.remove{border:0!important;background:transparent!important;color:#c62828!important;width:auto!important;margin-left:5px}.cart-foot{border-top:1px solid var(--line);padding:16px 18px 20px}.total-row{display:flex;justify-content:space-between;font-size:17px;font-weight:900;margin-bottom:13px}.total-row strong{font-size:23px;color:var(--green)}.secondary-btn{width:100%;padding:12px;border:1px solid #bfd0e3;background:#fff;color:var(--blue);border-radius:10px;font-weight:800;cursor:pointer;margin-bottom:9px}.checkout-page,.success-page{min-height:calc(100vh - 74px);padding:35px 15px;display:flex;justify-content:center;align-items:flex-start}.checkout-card,.success-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px #123f730d;width:min(720px,100%);padding:28px}.checkout-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px}.back-btn{border:0;background:transparent;color:var(--blue);font-weight:800;cursor:pointer;padding:0}.checkout-card h1{font-size:29px;margin:20px 0 7px}.muted{color:var(--muted);line-height:1.5}.order-summary{margin:22px 0;border:1px solid var(--line);border-radius:12px;padding:12px}.summary-product{display:grid;grid-template-columns:70px 1fr auto;align-items:center;gap:12px}.summary-product img{width:70px;height:70px;object-fit:contain}.summary-product div{display:flex;flex-direction:column;gap:5px;font-size:14px}.summary-product div span{color:var(--muted);font-size:12px}.summary-product>b{color:var(--green)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid label{font-size:13px;font-weight:800;display:flex;flex-direction:column;gap:6px}.form-grid input{border:1px solid #cbd5e1;border-radius:9px;padding:12px;outline:none}.form-grid input:focus{border-color:var(--blue-light)}.payment-title{margin:24px 0 10px}.payment-options{display:grid;gap:10px;margin-bottom:18px}.payment-option{display:flex;align-items:center;gap:12px;text-align:left;padding:13px;border:1px solid #cbd5e1;background:#fff;border-radius:10px}.payment-option.selected{border-color:var(--green);background:#f2fbf5}.payment-option.disabled{opacity:.55}.payment-option .radio{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;border:1px solid #cbd5e1;color:var(--green);font-weight:900}.payment-option small{display:block;color:var(--muted);margin-top:3px}.success-card{text-align:center;max-width:620px}.check{width:72px;height:72px;margin:0 auto 14px;border-radius:50%;background:#e8f7ee;color:var(--green);display:grid;place-items:center;font-size:42px;font-weight:900}.success-card h1{margin:8px 0}.success-summary{text-align:left;margin:22px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.success-summary div{display:flex;justify-content:space-between;gap:15px;padding:12px 14px;border-bottom:1px solid var(--line);font-size:13px}.success-summary div:last-child{border-bottom:0}.success-summary span{color:var(--muted)}.whatsapp-btn{width:100%;background:#148a45;color:#fff;border:0;border-radius:10px;padding:14px;font-weight:900;cursor:pointer}.success-note{color:var(--muted);font-size:12px;line-height:1.5}
@media(max-width:850px){.product-page{grid-template-columns:1fr;padding:20px}.main-image-wrap{height:390px}.product-info h1{font-size:27px}}
@media(max-width:600px){.topbar{padding:0 13px}.brand{font-size:20px}.container{padding:0 10px;margin-top:15px}.main-image-wrap{height:320px}.product-page{gap:20px}.form-grid{grid-template-columns:1fr}.summary-product{grid-template-columns:60px 1fr}.summary-product>b{grid-column:2}.feature-grid{grid-template-columns:1fr}.checkout-card,.success-card{padding:20px}}