:root{
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: rgba(17,24,39,.10);
  --shadow: 0 10px 24px rgba(17,24,39,.08);
  --radius: 18px;
  --radius-sm: 14px;
  --container: 1100px;
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
}

a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; height: auto; display:block; }

.container{
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(243,244,246,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight: 800;
  letter-spacing: .2px;
}
.brand .dot{
  width: 11px; height: 11px; border-radius: 50%;
  background: #111827;
  box-shadow: 0 0 0 4px rgba(17,24,39,.12);
}

.search{
  flex: 1;
  max-width: 520px;
  position: relative;
}
.search input{
  width: 100%;
  padding: 12px 14px 12px 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  outline: none;
  background: rgba(255,255,255,.85);
  color: var(--text);
}
.search i{
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
}

.page{
  padding: 18px 0 40px;
}

.hero{
  margin-top: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.hero h1{
  margin: 0;
  font-size: 20px;
}
.hero p{
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.tabs{
  margin-top: 14px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}
.tabs::-webkit-scrollbar{ height: 8px; }
.tabs::-webkit-scrollbar-thumb{ background: rgba(17,24,39,.12); border-radius: 99px; }
.tab{
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.75);
  color: var(--text);
  cursor: pointer;
  user-select: none;
  transition: transform .08s ease, background .12s ease;
}
.tab:active{ transform: scale(.98); }
.tab i{ color: var(--muted); }
.tab.active{
  background: #111827;
  color: #fff;
  border-color: rgba(17,24,39,.3);
}
.tab.active i{ color:#fff; }

.category-section{
  margin-top: 18px;
}
.category-head{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 0 2px;
}
.category-title{
  margin: 10px 0 12px;
  font-size: 16px;
  display:flex;
  align-items:center;
  gap:10px;
}
.category-title i{
  color: var(--muted);
}
.category-count{
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(17,24,39,.05);
  transition: transform .12s ease, box-shadow .12s ease;
  display:flex;
  flex-direction: column;
  min-height: 100%;
}
.card:hover{
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(17,24,39,.10);
}
.card.is-hidden{ display:none !important; }

.img-wrap{
  background: #fff;
  aspect-ratio: 1 / 1;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 8px;
}
.img-wrap img{
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card-body{
  padding: 12px 12px 14px;
  display:flex;
  flex-direction: column;
  gap: 8px;
}
.card-title{
  font-weight: 700;
  line-height: 1.25;
  font-size: 14px;
}
.card-meta{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}
.price{
  color: #111827;
  font-weight: 800;
}

.footer{
  margin-top: 22px;
  color: var(--muted);
  font-size: 13px;
}

/* Product page */
.breadcrumbs{
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  display:flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items:center;
}
.breadcrumbs a{ color: var(--muted); }
.breadcrumbs a:hover{ color: var(--text); }

.product{
  margin-top: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.product-layout{
  display:grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.product-media{
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.main-img-btn{
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  overflow:hidden;
}
.main-img{
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: #fff;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.thumbs{
  display:flex;
  gap: 10px;
}
.thumb{
  border: 1px solid var(--border);
  background: #fff;
  padding: 6px;
  border-radius: 12px;
  cursor:pointer;
  width: 84px;
  aspect-ratio: 1 / 1;
  overflow:hidden;
}
.thumb img{
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.thumb.active{
  outline: 2px solid rgba(17,24,39,.65);
  outline-offset: 2px;
}

.product-info h1{
  margin: 0;
  font-size: 20px;
  line-height: 1.25;
}
.badges{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(243,244,246,.7);
  color: var(--text);
  font-weight: 700;
  font-size: 13px;
}
.badge i{ color: var(--muted); }
.badge.price{ background: #111827; color:#fff; }
.badge.price i{ color:#fff; }

.note{
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.45;
}

/* Lightbox */
.lightbox{
  position: fixed;
  inset: 0;
  z-index: 100;
  display:none;
}
.lightbox.open{ display:block; }
.lb-backdrop{
  position:absolute;
  inset:0;
  background: rgba(17,24,39,.78);
  backdrop-filter: blur(6px);
}
.lb-dialog{
  position: absolute;
  inset: 0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 16px;
}
.lb-content{
  position: relative;
  width: min(980px, 100%);
  height: min(92vh, 740px);
  border-radius: 18px;
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.16);
  overflow:hidden;
}
.lb-stage{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 18px;
}
.lb-stage img{
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 14px;
  background: #000;
}

.lb-close{
  position:absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.35);
  color:#fff;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
}

.lb-nav{
  position:absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.35);
  color:#fff;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
}
.lb-prev{ left: 12px; }
.lb-next{ right: 12px; }

.lb-counter{
  position:absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.35);
  color:#fff;
  font-size: 13px;
}

/* Desktop layout */
@media (min-width: 900px){
  .product-layout{
    grid-template-columns: 1.1fr .9fr;
    align-items:start;
  }
  .product-info h1{ font-size: 24px; }
  .grid{ grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
}