:root{
  --blue:#1a5cff;
  --yellow:#ffc60a;
  --dark:#101820;
  --red:#e8262e;
  --gray-bg:#f4f5f7;
  --border:#e2e5ea;
  --text:#1c232b;
  --muted:#6b7480;
  --green:#1fae4a;
  --radius:10px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  font-family:'Segoe UI',Arial,Helvetica,sans-serif;
  background:var(--gray-bg);
  color:var(--text);
  padding-bottom:70px; /* space for mobile bottom nav */
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.btn{
  display:inline-block;padding:10px 18px;border-radius:6px;border:none;
  font-weight:600;cursor:pointer;font-size:14px;
}
.btn-primary{background:var(--blue);color:#fff;}
.btn-primary:hover{background:#1148d6;}
.btn-outline{background:#fff;border:1px solid var(--border);color:var(--text);}
.btn-danger{background:var(--red);color:#fff;}
.btn-small{padding:6px 12px;font-size:13px;width:100%;}
.btn-block{display:block;width:100%;text-align:center;margin-top:8px;}

/* ===== Top bar ===== */
.topbar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;}
.topbar-inner{
  max-width:1300px;margin:0 auto;padding:12px 16px;
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
}
.logo{font-size:22px;font-weight:800;flex-shrink:0;}
.logo-dot{margin-right:-4px;}
.logo-black{color:#111;}
.logo-blue{color:var(--blue);}
.logo-yellow{color:var(--yellow);}
.searchform{flex:1;display:flex;min-width:180px;border:2px solid var(--blue);border-radius:8px;overflow:hidden;}
.searchform input{border:none;padding:10px 14px;flex:1;font-size:14px;outline:none;}
.searchform button{border:none;background:var(--blue);color:#fff;padding:0 20px;font-weight:600;cursor:pointer;}
.social-icons{display:flex;gap:10px;font-size:18px;}
.cart-icon{position:relative;font-size:20px;padding:0 4px;}
.cart-badge{
  position:absolute;top:-8px;right:-10px;background:var(--blue);color:#fff;
  font-size:11px;border-radius:50%;padding:1px 6px;
}

/* ===== Banner ===== */
.banner{
  background:linear-gradient(120deg,#f2f2f2 60%,#e9e9e9);
  padding:40px 16px;
  border-bottom:1px solid var(--border);
}
.banner-inner{max-width:1300px;margin:0 auto;text-align:center;}
.banner h1{font-size:14px;color:var(--muted);margin:0 0 4px;text-transform:uppercase;letter-spacing:1px;}
.banner h2{font-size:42px;margin:0;font-weight:800;}
.banner h2 .accent{color:var(--red);}
.banner p{color:var(--muted);margin:6px 0 16px;}

/* ===== Layout ===== */
.page-container{max-width:1300px;margin:0 auto;padding:20px 16px;}
.with-sidebar{display:flex;gap:24px;align-items:flex-start;}

/* ===== Filter ===== */
.mobile-filter-toggle{
  display:none;width:100%;padding:12px 16px;background:#fff;border:1px solid var(--border);
  border-radius:8px;margin-bottom:12px;font-weight:600;justify-content:space-between;align-items:center;cursor:pointer;
}
.filter-sidebar{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:16px;width:230px;flex-shrink:0;
}
.filter-group{border-bottom:1px solid var(--border);padding:10px 0;}
.filter-group:last-of-type{border-bottom:none;}
.filter-group-toggle{
  background:none;border:none;width:100%;display:flex;justify-content:space-between;
  align-items:center;font-weight:600;font-size:14px;cursor:pointer;padding:4px 0;color:var(--text);
}
.filter-group-body{display:flex;flex-direction:column;gap:8px;margin-top:8px;font-size:13px;}
.filter-group-body input[type=number]{padding:6px 8px;border:1px solid var(--border);border-radius:6px;width:100%;margin-bottom:4px;}
.filter-group.collapsed .filter-group-body{display:none;}
.filter-actions{margin-top:12px;}

/* ===== Product grid ===== */
.product-area{flex:1;min-width:0;}
.product-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;
}
.product-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;
}
.product-image-wrap{position:relative;aspect-ratio:1/1;background:#f0f0f0;overflow:hidden;}
.product-image-wrap img{width:100%;height:100%;object-fit:cover;}
.ribbon{
  position:absolute;top:10px;right:-30px;background:var(--green);color:#fff;
  font-size:11px;font-weight:700;padding:3px 30px;transform:rotate(45deg);
}
.product-info{padding:10px 12px;display:flex;flex-direction:column;gap:6px;flex:1;}
.product-name{font-size:13px;font-weight:600;line-height:1.3;min-height:34px;}
.product-price{font-weight:700;color:var(--blue);font-size:14px;}
.add-to-cart-form{margin-top:auto;}
.empty-msg{padding:40px 0;text-align:center;color:var(--muted);}

/* ===== Product detail ===== */
.product-detail{display:flex;gap:32px;background:#fff;padding:24px;border-radius:var(--radius);border:1px solid var(--border);flex-wrap:wrap;}
.product-detail-image{position:relative;width:320px;max-width:100%;background:#f0f0f0;border-radius:8px;overflow:hidden;}
.product-detail-info{flex:1;min-width:250px;}
.product-detail-info h1{margin-top:0;}
.product-detail-price{font-size:26px;font-weight:800;color:var(--blue);margin:10px 0;}
.tag{display:inline-block;background:var(--gray-bg);border:1px solid var(--border);padding:3px 10px;border-radius:20px;font-size:12px;margin-right:6px;}
.stock-line{color:var(--muted);font-size:14px;}
.add-to-cart-form-detail{display:flex;align-items:center;gap:12px;margin-top:16px;flex-wrap:wrap;}
.add-to-cart-form-detail input[type=number]{width:70px;padding:8px;border:1px solid var(--border);border-radius:6px;margin-left:6px;}

/* ===== Cart ===== */
.cart-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:16px;}
.cart-table th,.cart-table td{padding:12px;text-align:left;border-bottom:1px solid var(--border);font-size:14px;}
.cart-prod{display:flex;align-items:center;gap:10px;}
.cart-prod img{width:48px;height:48px;object-fit:cover;border-radius:6px;}
.qty-input{width:60px;padding:6px;border:1px solid var(--border);border-radius:6px;}
.link-btn{background:none;border:none;color:var(--red);cursor:pointer;font-size:13px;text-decoration:underline;}
.cart-summary{text-align:right;margin-bottom:24px;}
.checkout-box{background:#fff;padding:20px;border-radius:var(--radius);border:1px solid var(--border);max-width:480px;}
.checkout-form label{display:block;margin-bottom:12px;font-size:14px;font-weight:600;}
.checkout-form input,.checkout-form textarea{
  display:block;width:100%;margin-top:6px;padding:10px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-weight:400;
}
.checkout-form textarea{min-height:70px;}
.note{color:var(--muted);font-size:13px;}
.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;}
.alert-error{background:#fdecec;color:var(--red);border:1px solid #f6c5c7;}
.alert-success{background:#eafaf0;color:var(--green);border:1px solid #bfe9cd;}
.inline-check{display:flex;align-items:center;gap:8px;font-weight:400 !important;margin-bottom:8px;}
.inline-check input{width:auto;margin:0;}
.payment-details-box{background:var(--gray-bg);border:1px solid var(--border);border-radius:8px;padding:12px;margin:10px 0 16px;font-size:13px;line-height:1.6;}
.success-box{background:#fff;padding:30px;border-radius:var(--radius);border:1px solid var(--border);text-align:center;}
.track-form{display:flex;gap:12px;flex-wrap:wrap;align-items:end;background:#fff;padding:16px;border-radius:var(--radius);border:1px solid var(--border);margin-bottom:20px;}
.track-form label{font-size:13px;font-weight:600;}
.track-form input{display:block;margin-top:6px;padding:8px;border:1px solid var(--border);border-radius:6px;}
.order-result{background:#fff;padding:16px;border-radius:var(--radius);border:1px solid var(--border);}

/* ===== Footer ===== */
.site-footer{text-align:center;padding:24px;color:var(--muted);font-size:13px;}

/* ===== Mobile bottom nav ===== */
.mobile-bottom-nav{
  display:none;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border);
  justify-content:space-around;padding:6px 0 8px;z-index:60;
}
.nav-item{display:flex;flex-direction:column;align-items:center;font-size:11px;color:var(--muted);position:relative;}
.nav-item span{font-size:18px;}
.nav-item.active{color:var(--blue);}
.nav-item .dot{
  position:absolute;top:-4px;right:8px;background:var(--blue);color:#fff;border-radius:50%;
  font-size:10px;padding:0 5px;font-style:normal;
}

/* ===================================================
   RESPONSIVE — MOBILE (matches phone screenshot look)
   =================================================== */
@media (max-width:768px){
  .social-icons{order:3;width:100%;justify-content:center;padding-top:6px;}
  .cart-icon{order:2;}
  .logo{order:1;}
  .searchform{order:1;width:100%;}
  .banner h2{font-size:28px;}
  .banner-inner{text-align:center;}

  .with-sidebar{flex-direction:column;}
  .mobile-filter-toggle{display:flex;}
  .filter-sidebar{
    display:none;width:100%;
  }
  .filter-sidebar.open{display:block;}
  .filter-group{ }
  .filter-group.collapsed .filter-group-body{display:none;}

  .product-grid{grid-template-columns:repeat(2,1fr);}
  .mobile-bottom-nav{display:flex;}
}

@media (min-width:769px){
  /* Desktop: sidebar always visible, groups always expanded */
  .filter-group-body{display:flex !important;}
}