/* ---------------------------------------------
   Variables & reset
   ---------------------------------------------*/
:root{
  --bg:#0f1724; /* deep navy */
  --card:#0f1724;
  --muted:#94a3b8; /* slate */
  --accent:#ff6b6b; /* coral */
  --accent-2:#7c5cff; /* violet */
  --glass: rgba(255,255,255,0.04);
  --radius:14px;
  --max-width:1200px;
  --gap:18px;
  --text: #e6eef8;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
}
*{box-sizing:border-box}
html,body{height:100%;overflow-x:hidden}
body{
  margin:0;
  background: #ffffff;
  color:#333;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.35;
  -webkit-text-size-adjust:100%;
}

/* Container */
.wrap{
  width:100%;
  max-width:var(--max-width);
  margin:0 auto;
  padding:18px;
}

/* ---------- Header / Nav ---------- */
header{
  position:sticky;
  top:0;
  z-index:30;
  backdrop-filter: blur(6px);
  background: #ffffff;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}
.nav{
  display:flex;
  align-items:center;
  gap:16px;
  padding:10px 18px;
}
.brand{
  display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:0.4px;color:#333;
}
.logo{
  width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:grid;place-items:center;font-weight:800;color:white;
  box-shadow:0 6px 20px rgba(124,92,255,0.12);
}
nav{margin-left:auto;display:flex;gap:12px;align-items:center}
.nav a{color:#666;text-decoration:none;font-weight:600;font-size:14px;padding:8px 10px;border-radius:10px}
.nav a:hover{color:#333;background:rgba(0,0,0,0.05)}
.search{display:flex;align-items:center;gap:8px;background:rgba(0,0,0,0.05);padding:8px;border-radius:12px}
.search input{background:transparent;border:0;outline:0;color:#333;min-width:140px}
.icon-btn{background:transparent;border:0;color:#333;cursor:pointer;padding:8px;border-radius:10px}

/* Cart button styles */
.cart-btn{background:linear-gradient(90deg,var(--accent),var(--accent-2));border:0;color:white;cursor:pointer;padding:10px 16px;border-radius:12px;display:flex;align-items:center;gap:8px;font-weight:700;font-size:14px;position:relative;transition:transform 0.2s,box-shadow 0.2s}
.cart-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,107,107,0.3)}
.cart-icon{font-size:20px}
.cart-text{font-weight:600}
.cart-badge{background:white;color:var(--accent);border-radius:50%;width:20px;height:20px;display:grid;place-items:center;font-size:11px;font-weight:800}

/* ---------- Hero ---------- */
.hero{
  display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center;padding:36px 18px 28px;
}
.hero-left{padding:18px}
.eyebrow{color:var(--accent);font-weight:700;letter-spacing:0.9px}
h1{margin:.35em 0 0;font-size:38px;line-height:1.02}
p.lead{color:var(--muted);margin:0 0 18px;max-width:60ch}
.cta-row{display:flex;gap:12px;margin-top:12px;flex-wrap:wrap}
.btn{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:white;padding:12px 18px;border-radius:12px;border:0;font-weight:700;cursor:pointer;white-space:nowrap}
.btn.ghost{background:transparent;border:2px solid var(--accent);color:var(--accent)}
.btn.ghost:hover{background:var(--accent);color:white}
.cta-row .btn.ghost{display:none}

.hero-right{
  display:none;
}
.hero-sneaker{width:100%;max-width:360px;border-radius: 50px;transform:rotate(0px);filter:drop-shadow(0 20px 30px rgba(0,0,0,0.6));}
.price-tag{position:absolute;left:18px;bottom:18px;background:rgba(0,0,0,0.5);padding:10px 12px;border-radius:10px;font-weight:700}

/* ---------- Main content ---------- */
main{padding:18px}
.controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}
.filters{display:flex;gap:12px;align-items:center}
.filter-pill{background:rgba(255,255,255,0.03);padding:8px 12px;border-radius:999px;font-weight:600;color:var(--muted)}

/* Product grid */
.grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--gap);
  align-items:start;
}
.card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:16px;padding:12px;border:1px solid rgba(255,255,255,0.03);
  transition:transform .22s ease, box-shadow .22s ease;
  display:flex;flex-direction:column;gap:12px;overflow:hidden;
}
.card:hover{transform:translateY(-8px);box-shadow:0 18px 40px rgba(2,6,23,0.6)}
.thumb{width:100%;aspect-ratio:1;background:#f5f5f5;border-radius:12px;overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.meta{display:flex;justify-content:space-between;align-items:center}
.meta .name{font-weight:700}
.meta .price{font-weight:800}
.specs{color:var(--muted);font-size:13px}
.product-options{display:flex;gap:8px;margin-top:8px}
.size-select,.color-select{flex:1;padding:6px 8px;border:1px solid rgba(0,0,0,0.1);background:#fff;color:#333;border-radius:8px;font-size:12px;cursor:pointer}
.actions{display:flex;gap:8px;margin-top:8px}
.add{flex:1;padding:8px 10px;border-radius:10px;border:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));color:white;font-weight:700;cursor:pointer}

/* ---------- Footer ---------- */
footer{padding:48px 0 0;color:#e0e0e0;font-size:14px;background:rgb(51, 56, 69);border-top:1px solid rgba(255,255,255,0.1)}
.footer-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding:0 18px 32px}
.footer-section h4{color:#ffffff;font-weight:700;margin:0 0 16px;font-size:16px}
.footer-brand{font-weight:800;font-size:18px;color:#ffffff;margin-bottom:8px}
.footer-link{color:#b0b0b0;text-decoration:none;display:block;margin-bottom:8px;transition:color 0.2s}
.footer-link:hover{color:#ffffff}
.footer-link a{color:#b0b0b0;text-decoration:none}
.footer-link a:hover{color:#ffffff}
.footer-bottom{padding:16px 0;border-top:1px solid rgba(255,255,255,0.1);text-align:center}

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .hero{grid-template-columns:1fr;}
  .grid{grid-template-columns:repeat(3,1fr)}
  .hero-right{order:-1}
}
@media (max-width:720px){
  .wrap{padding:12px}
  h1{font-size:28px}
  .grid{grid-template-columns:repeat(2,1fr)}
  nav{display:none}
  .search{padding:4px 6px}
  .search input{min-width:40px;font-size:16px;padding:4px}
  .cart-btn{display:none}
  .hero-right{min-height:260px;padding:12px}
  .brand{font-size:16px}
  .footer-inner{grid-template-columns:repeat(2,1fr);gap:24px}
  .filters{display:none !important}
  .controls{flex-direction:column;align-items:stretch}
  .cta-row .btn.ghost{display:flex}
}
@media (max-width:480px){
  .meta{flex-direction:column;align-items:flex-start;gap:6px}
  .nav{padding:8px;gap:8px}
  .hero{padding:18px 8px}
  header{border-radius:0}
  .footer-inner{grid-template-columns:1fr;gap:20px}
  .btn{padding:10px 14px;font-size:13px}
}

/* small utility */
.muted{color:var(--muted)}
.chip{padding:6px 8px;border-radius:10px;background:rgba(255,255,255,0.02);font-weight:600}

/* Category grid */
.category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-top:40px}
.category-card{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,0.03);transition:transform 0.2s,box-shadow 0.2s;cursor:pointer}
.category-card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(2,6,23,0.4)}
.category-image{width:100%;height:200px;overflow:hidden}
.category-image img{width:100%;height:100%;object-fit:cover}
.category-info{padding:20px}
.category-info h3{margin:0 0 8px;color:#333;font-weight:700}
.category-info p{margin:0 0 12px;color:#666;font-size:14px}
.product-count{color:var(--accent);font-weight:600;font-size:13px}

/* Filter controls */
.controls{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.filters{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.filter-group{display:flex;gap:8px;align-items:center}
.filter-group select,#sortFilter{background:rgba(255,255,255,0.03);padding:8px 12px;border-radius:20px;border:1px solid rgba(255,255,255,0.1);color:var(--muted);cursor:pointer;transition:all 0.2s;font-family:inherit;font-size:14px}
.filter-group select:hover,#sortFilter:hover{background:var(--accent);color:white;border-color:var(--accent)}
.filter-btn{background:rgba(255,255,255,0.03);padding:8px 12px;border-radius:20px;border:1px solid rgba(255,255,255,0.1);color:var(--muted);cursor:pointer;transition:all 0.2s;font-family:inherit;font-size:14px}
.filter-btn:hover,.filter-btn.active{background:var(--accent);color:white;border-color:var(--accent)}
.clear-filters{background:transparent;border:1px solid var(--muted);color:var(--muted);padding:8px 12px;border-radius:20px;cursor:pointer;transition:all 0.2s}
.clear-filters:hover{background:var(--muted);color:var(--bg)}

/* Modal styles */
.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);z-index:1000;display:none;align-items:center;justify-content:center}
.modal-content{background:var(--bg);padding:24px;border-radius:16px;max-width:500px;width:90%;max-height:80vh;overflow-y:auto;border:1px solid rgba(255,255,255,0.1)}
.close{float:right;font-size:24px;cursor:pointer;color:var(--muted)}
.close:hover{color:var(--text)}
.cart-item{display:flex;align-items:center;padding:12px 0;border-bottom:1px solid rgba(255,255,255,0.1);gap:12px}
.cart-item-image{width:60px;height:60px;object-fit:cover;border-radius:8px}
.cart-item-details{flex:1}
.cart-item-details h4{margin:0;font-size:14px}
.cart-item-details p{margin:4px 0 0;color:var(--muted);font-size:12px}
.cart-item-controls{display:flex;align-items:center;gap:8px}
.cart-item-controls button{width:24px;height:24px;border:1px solid rgba(255,255,255,0.2);background:transparent;color:var(--text);border-radius:4px;cursor:pointer}
.cart-item-total{font-weight:600;min-width:80px;text-align:right}
.remove-btn{background:transparent;border:none;color:var(--muted);font-size:18px;cursor:pointer;padding:4px}
.remove-btn:hover{color:var(--accent)}

/* Checkout styles */
.checkout-container{display:grid;grid-template-columns:2fr 1fr;gap:40px;margin-top:20px}
.checkout-section{margin-bottom:32px}
.checkout-section h2{margin:0 0 20px;color:#333}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:4px;color:#333;font-weight:600}
.form-group input,.form-group select{width:100%;padding:12px;border:1px solid rgba(0,0,0,0.1);background:rgba(255,255,255,0.8);color:#333;border-radius:8px;font-family:inherit;font-size:16px;appearance:none;-webkit-appearance:none;-moz-appearance:none}
.form-group select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
.payment-methods{margin-bottom:20px}
.payment-method{display:block;margin-bottom:12px;cursor:pointer;color:#333}
.payment-method input{margin-right:8px}
.payment-form{margin-top:20px}
.order-summary{background:rgba(255,255,255,0.02);padding:24px;border-radius:16px;border:1px solid rgba(0,0,0,0.1)}
.order-summary h2{color:#333}
.checkout-item{display:flex;align-items:center;gap:12px;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid rgba(0,0,0,0.1)}
.checkout-item img{width:50px;height:50px;object-fit:cover;border-radius:6px}
.item-details{flex:1}
.item-details h4{margin:0;font-size:14px;color:#333}
.item-details p{margin:4px 0 0;color:#666;font-size:12px}
.item-price{font-weight:600;color:#333}
.order-totals{margin:20px 0;color:#333}
.total-row{display:flex;justify-content:space-between;margin-bottom:8px;color:#333}
.final-total{font-weight:700;font-size:18px;border-top:1px solid rgba(0,0,0,0.1);padding-top:12px;margin-top:12px;color:#333}
.checkout-btn{width:100%;margin-top:20px}

@media (max-width:768px){
  .checkout-container{grid-template-columns:1fr;gap:20px}
  .form-row{grid-template-columns:1fr}
}

.cart-actions{display:flex;gap:12px;margin-top:16px}
.cart-actions .btn{flex:1}

.cart-total{margin:20px 0;text-align:right;font-size:18px}

/* Form styles */
label{display:block;color:var(--text);font-weight:600;margin-bottom:4px}
input,textarea,select{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);color:var(--text);border-radius:8px;padding:12px}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent)}

/* Accessibility: focus states */
a:focus, button:focus, input:focus{outline:2px solid rgba(124,92,255,0.25);outline-offset:2px}

/* Mobile back button */
.mobile-back-btn{display:none;background:transparent;border:1px solid rgba(0,0,0,0.1);color:#333;padding:8px 16px;border-radius:8px;font-weight:600;cursor:pointer;margin-bottom:16px}
.mobile-back-btn:hover{background:rgba(0,0,0,0.05)}
@media (max-width:768px){
  .mobile-back-btn{display:inline-block}
}