/*
  Simple adaptive layout inspired by the provided Foot Locker product page screenshots.
  Tech: HTML5 + CSS3 + vanilla JS
*/

:root{
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --border: #e6e6e6;
  --surface: #fafafa;
  --focus: #111111;
  --accent: #111111;
  --radius: 14px;
  --shadow: 0 12px 30px rgba(0,0,0,.08);
  --container: 1180px;
  --chrome-h: 150px; /* updated by JS */
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
button, input, select{ font: inherit; }

.container{
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 18px;
}

/* Top bars */
.topbar{
  background: #111;
  color: #fff;
  font-size: 12px;
  line-height: 1.2;
}
.topbar__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 18px;
}
.topbar a{ text-decoration: underline; }

.site-header{
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.header-main{
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding-block: 14px;
}

.logo{
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo img{ width: 150px; height: auto; }

.search{
  display: flex;
  gap: 10px;
  align-items: center;
}
.search__field{
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search__field input{
  border: 0;
  outline: none;
  width: 100%;
}
.search__icon{
  width: 18px;
  height: 18px;
  opacity: .6;
}

.header-actions{
  display: flex;
  align-items: center;
  gap: 14px;
  white-space: nowrap;
}
.header-actions__link{
  font-size: 13px;
  color: var(--muted);
}
.header-actions__link strong{ color: var(--text); }
.icon-btn{
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
}
.icon-btn:hover{ border-color: var(--border); background: var(--surface); }
.icon{
  width: 20px;
  height: 20px;
}

/* Navigation */
.primary-nav{
  border-top: 1px solid var(--border);
}
.nav__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: 10px;
}
.nav-links{
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar{ display:none; }
.nav-links a{
  font-size: 13px;
  color: #222;
  padding: 8px 8px;
  border-radius: 999px;
}
.nav-links a:hover{
  background: var(--surface);
}
.nav-links .is-highlight a{ color: #c4002d; font-weight: 700; }

/* Mobile header */
.mobile-header{
  display: none;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding-block: 12px;
}
.mobile-header .logo img{ width: 130px; }
.mobile-search{ display:none; padding-bottom: 12px; }

/* Off-canvas menu */
.drawer{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 50;
}
.drawer.is-open{ opacity: 1; pointer-events: auto; }
.drawer__panel{
  width: min(340px, 86vw);
  height: 100%;
  background: var(--bg);
  transform: translateX(-100%);
  transition: transform .18s ease;
  box-shadow: var(--shadow);
  padding: 14px;
}
.drawer.is-open .drawer__panel{ transform: translateX(0); }
.drawer__head{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.drawer__nav{
  padding-top: 12px;
}
.drawer__nav a{
  display:block;
  padding: 12px 10px;
  border-radius: 10px;
}
.drawer__nav a:hover{ background: var(--surface); }

/* Main layout */
main{ padding-bottom: 50px; }

.breadcrumbs{
  font-size: 12px;
  color: var(--muted);
  padding-top: 16px;
  padding-bottom: 10px;
}

.product-hero{
  padding-block: 18px 26px;
}

.product-hero__grid{
  display: grid;
  gap: 22px;
  /* Mobile-first: product info above image (matches the provided mobile screenshot) */
  grid-template-areas:
    "info"
    "media";
}

.product-media{ grid-area: media; }
.product-info{ grid-area: info; }

.product-media{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  position: relative;
}
.product-media__img{
  width: 100%;
  height: auto;
}
.product-media__dots{
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(0,0,0,.06);
  backdrop-filter: blur(6px);
}
.product-media__dots span{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(0,0,0,.22);
}
.product-media__dots span.is-active{ background: rgba(0,0,0,.72); }

.product-info{
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rating{
  display:flex;
  align-items:center;
  gap: 10px;
  font-size: 13px;
}
.stars{
  display:inline-flex;
  gap: 3px;
}
.star{
  width: 16px;
  height: 16px;
}
.star path{ fill: #111; }
.rating a{ color: var(--muted); text-decoration: underline; }

.product-title{
  font-size: clamp(28px, 3vw, 34px);
  line-height: 1.1;
  margin: 0;
}
.product-subtitle{ margin: 0; color: var(--muted); }

.price{
  display:flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.price__value{ font-size: 18px; font-weight: 800; }
.price__meta{ font-size: 12px; color: var(--muted); }

.payments{
  font-size: 12px;
  color: var(--muted);
  display:flex;
  flex-direction: column;
  gap: 6px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: #2b2b2b;
}

.section-title{
  font-size: 13px;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: #333;
  margin: 0;
}

.product-copy{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 14px;
  background: #fff;
}
.product-copy h2{ font-size: 16px; margin: 8px 0; }
.product-copy h3{ font-size: 14px; margin: 10px 0 6px; }
.product-copy p{ margin: 8px 0; color: #222; }
.product-copy ul, .product-copy ol{ margin: 8px 0 8px 18px; color: #222; }
.product-copy li{ margin: 6px 0; }

.swatches{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.swatch{
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
}
.swatch img{ width: 38px; height: 38px; border-radius: 10px; }
.swatch[aria-checked="true"]{ outline: 2px solid #111; outline-offset: 2px; }

.form-row{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}
.select{
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
}

.size-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
.size-btn{
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 12px;
  padding: 10px 10px;
  cursor: pointer;
  font-weight: 700;
}
.size-btn:hover{ background: var(--surface); }
.size-btn.is-selected{ border-color: #111; box-shadow: 0 0 0 1px #111 inset; }
.size-btn:disabled{
  color: #999;
  background: #f6f6f6;
  cursor: not-allowed;
  position: relative;
}
.size-btn:disabled::after{
  content: "";
  position:absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 48%, rgba(0,0,0,.15) 49%, rgba(0,0,0,.15) 51%, transparent 52%);
  border-radius: 12px;
}

.note{
  font-size: 12px;
  color: var(--muted);
}
.note a{ text-decoration: underline; }

.radio-cards{
  display: grid;
  gap: 10px;
}
.radio-card{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: #fff;
  cursor: pointer;
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: start;
}
.radio-card input{ margin-top: 2px; }
.radio-card__title{ font-weight: 800; font-size: 13px; margin: 0; }
.radio-card__desc{ font-size: 12px; color: var(--muted); margin: 6px 0 0; }

.cta{
  width: 100%;
  border: 0;
  border-radius: 999px;
  padding: 14px 16px;
  background: #F83600;
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}
.cta:disabled{ opacity: .5; cursor: not-allowed; }

.perks{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 12px;
  color: #333;
}
.perks li{
  display: flex;
  gap: 10px;
  align-items: center;
}
.perks svg{ width: 18px; height: 18px; opacity: .7; }

.loyalty{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 12px;
  display:flex;
  gap: 12px;
  align-items: flex-start;
}
.loyalty__badge{
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: #111;
  color: #fff;
  display:grid;
  place-items: center;
  font-weight: 900;
  letter-spacing: .08em;
}
.loyalty__text{ font-size: 12px; color: #333; }
.loyalty__text strong{ display:block; margin-bottom: 4px; }

/* Accordions */
.accordions{
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.accordion{
  border-bottom: 1px solid var(--border);
}
.accordion:last-child{ border-bottom: 0; }
.accordion summary{
  list-style: none;
  cursor: pointer;
  padding: 16px 0;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  font-weight: 800;
}
.accordion summary::-webkit-details-marker{ display:none; }
.accordion summary::after{
  content: "+";
  width: 28px;
  height: 28px;
  display:grid;
  place-items:center;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: #222;
}
.accordion[open] summary::after{ content: "–"; }
.accordion__content{
  padding: 0 0 18px;
  color: #222;
  font-size: 14px;
}
.accordion__content p{ margin: 10px 0; }
.accordion__content ul{ margin: 8px 0 8px 18px; }

/* Complete your look */
.complete{
  padding-top: 22px;
  padding-bottom: 10px;
}
.complete__head{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}
.complete__title{ font-size: 20px; margin: 0; }
.carousel-controls{
  display:flex;
  gap: 8px;
}
.carousel-btn{
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
}
.carousel-btn:hover{ background: var(--surface); }

.carousel{
  margin-top: 12px;
  overflow: hidden;
}
.carousel__track{
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(190px, 1fr);
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 10px;
  scroll-behavior: smooth;
  scrollbar-width: none;
}
.carousel__track::-webkit-scrollbar{ display:none; }

.card{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.card__media{
  aspect-ratio: 4 / 3;
  background: #f7f7f7;
}
.card__media img{ width: 100%; height: 100%; object-fit: cover; }
.card__body{ padding: 12px; }
.card__label{
  display:inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  background: #c4002d;
  color: #fff;
  margin-bottom: 8px;
}
.card__title{ font-size: 13px; margin: 0 0 4px; }
.card__meta{ font-size: 12px; color: var(--muted); margin: 0 0 8px; }
.card__price{ font-size: 13px; font-weight: 800; margin: 0; }
.card__price s{ color: #888; font-weight: 500; margin-left: 6px; }

/* Service links */
.service-links{
  margin-top: 24px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}
.service-grid{
  display:grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 12px;
}
.service-tile{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: #fff;
  display:flex;
  align-items:center;
  gap: 12px;
  justify-content: center;
}
.service-tile svg{ width: 22px; height: 22px; opacity: .75; }
.service-tile span{ font-size: 13px; font-weight: 700; }

/* Footer */
.site-footer{
  margin-top: 28px;
  border-top: 1px solid var(--border);
  background: #fff;
}
.footer-inner{
  padding-block: 18px;
  display:grid;
  grid-template-columns: 1.2fr .9fr;
  gap: 22px;
}

.footer-cols{
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 12px;
}
.footer-col{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.footer-col summary{
  font-weight: 900;
  cursor: pointer;
  list-style:none;
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 10px;
}
.footer-col summary::-webkit-details-marker{ display:none; }
.footer-col summary::after{
  content: "+";
  width: 24px;
  height: 24px;
  display:grid;
  place-items:center;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: #222;
}
.footer-col[open] summary::after{ content: "–"; }
.footer-col ul{
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display:grid;
  gap: 8px;
}
.footer-col a{ font-size: 13px; color: var(--muted); }
.footer-col a:hover{ color: #111; text-decoration: underline; }

.footer-side{
  display:grid;
  gap: 12px;
}
.panel{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: #fff;
}
.panel h4{ margin: 0 0 8px; font-size: 14px; }
.panel p{ margin: 0 0 10px; color: var(--muted); font-size: 12px; }
.panel .btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  border-radius: 999px;
  border: 1px solid #111;
  background: #fff;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
}
.panel .btn:hover{ background: #111; color:#fff; }
.panel input{
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
}

.footer-bottom{
  border-top: 1px solid var(--border);
  padding-block: 14px;
  color: var(--muted);
  font-size: 12px;
}
.footer-bottom__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}

/* Desktop-first screen rules */
@media (min-width: 1024px){
  .product-hero__grid{
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "media info";
    align-items: stretch;
    gap: 28px;
    height: calc(100vh - var(--chrome-h));
  }

  /* Right panel scrolls, left image stays fixed in its column */
  .product-info{
    overflow-y: auto;
    padding-right: 10px;
  }

  .product-media{
    height: 100%;
    display:flex;
    align-items: center;
    justify-content: center;
  }
  .product-media__img{
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

/* Tablet */
@media (max-width: 1023.98px){
  .header-main, .primary-nav{ display:none; }
  .mobile-header{ display:grid; }
  .mobile-search{ display:block; }

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

  .service-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }

  .footer-inner{ grid-template-columns: 1fr; }
  .footer-cols{ grid-template-columns: 1fr; }
}

/* Small phones */
@media (max-width: 420px){
  .size-grid{ grid-template-columns: repeat(3, minmax(0,1fr)); }
}

/* Focus styles */
:focus-visible{
  outline: 3px solid rgba(0,0,0,.35);
  outline-offset: 2px;
}