/* ========== RESET & BASE ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:#333;background:#f5f5f5;line-height:1.5;overflow-x:hidden}
a{color:#337ab7;text-decoration:none}
a:hover{color:#23527c;text-decoration:underline}
ul,ol{list-style:none}
img{max-width:100%;height:auto;vertical-align:middle}
button{cursor:pointer;font-family:inherit}
.clearfix::after{content:"";display:table;clear:both}

/* ========== LAYOUT ========== */
.container{max-width:100%;padding:0 10px;margin:0 auto}
.row{display:flex;flex-wrap:wrap}
main{width:100%}
.mb-2{margin-bottom:8px}
.mb-3{margin-bottom:12px}
.py-2{padding-top:8px;padding-bottom:8px}
.bg-white{background:#fff}
.text-center{text-align:center}
.text-left{text-align:left}
.text-right{text-align:right}
.text-danger{color:#d9534f}

/* ========== BREADCRUMB ========== */
.breadcrumb{display:flex;flex-wrap:wrap;padding:8px 12px;margin-bottom:0;background:#fff;border-radius:4px;font-size:13px}
.breadcrumb li{display:inline}
.breadcrumb li+li::before{content:"/ ";color:#999;padding:0 6px}
.breadcrumb li span{color:#999}

/* ========== FIRST-LEVEL TABS ========== */
.search_tab_list{display:flex;flex-wrap:wrap;align-items:center;padding:8px 12px !important;gap:6px;background:#fff;border-radius:4px}
.search_tab_label{font-weight:600;color:#555;margin-right:8px;white-space:nowrap;font-size:13px}
.search_tab{display:inline-block;padding:4px 14px;border-radius:20px;cursor:pointer;font-size:13px;color:#555;transition:all .2s;border:1px solid transparent}
.search_tab:hover{color:#337ab7}
.search_tab.active{background:#337ab7;color:#fff;border-color:#337ab7}

/* ========== SECOND-LEVEL TABS ========== */
.search_tab_item{display:flex;flex-wrap:wrap;align-items:center;padding:8px 12px !important;gap:5px;background:#fff;border-radius:4px}
.search_tab_item .search_tab_label{font-weight:600;color:#555;margin-right:8px;white-space:nowrap;font-size:13px}
.search_to{display:inline-block;padding:3px 10px;border-radius:16px;cursor:pointer;font-size:12px;color:#666;transition:all .2s;border:1px solid transparent}
.search_to:hover{color:#337ab7}
.search_to.active{background:#337ab7;color:#fff;border-color:#337ab7}

/* ========== SORT OPTIONS ========== */
.sort-options{display:flex;align-items:center;padding:8px 12px;background:#fff;border-radius:4px;gap:10px}
.sort-label{font-weight:600;color:#555;font-size:13px;white-space:nowrap}
.sort-list{display:flex;gap:6px}
.sort-item{padding:4px 14px;border-radius:4px;cursor:pointer;font-size:13px;color:#666;position:relative;transition:all .15s}
.sort-item:hover{color:#337ab7}
.sort-item.active{color:#337ab7;font-weight:600}
.sort-icon{display:inline-flex;align-items:center;gap:4px}
.sort-text{display:inline}
.sort-asc,.sort-desc{font-size:10px;color:#ccc;line-height:1}
.sort-item.active.asc .sort-asc{color:#337ab7}
.sort-item.active.desc .sort-desc{color:#337ab7}

/* ========== PRODUCT GRID ========== */
.product-list{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:4px 0}
.product-item{background:#fff;border-radius:6px;overflow:hidden;transition:box-shadow .2s}
.product-item:hover{box-shadow:0 2px 12px rgba(0,0,0,.1)}
.card-item{display:block;padding:8px;cursor:pointer}
.embed-responsive{position:relative;width:100%;padding-bottom:100%;overflow:hidden;border-radius:4px;background:#f8f8f8}
.embed-responsive img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}
.img-zoom:hover img{transform:scale(1.05)}
.item-info{padding:6px 2px 2px}
.item-title{font-size:12px;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px;line-height:1.4}
.item-detail{margin-top:4px}
.btn-carts{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;font-size:11px;color:#337ab7;background:transparent;border:1px solid #337ab7;border-radius:4px;transition:all .2s;white-space:nowrap}
.btn-carts:hover{background:#337ab7;color:#fff}
.btn-carts i{font-size:12px}

/* ========== PAGINATION ========== */
.pager{display:flex;justify-content:center;padding:16px 0}
.pagination{display:flex;flex-wrap:wrap;gap:4px;justify-content:center}
.pagination li{display:inline-block}
.pagination li span,.pagination li a{display:inline-block;padding:6px 12px;font-size:13px;border:1px solid #ddd;border-radius:4px;color:#337ab7;background:#fff;transition:all .15s;min-width:36px;text-align:center}
.pagination li a:hover{background:#e9ecef;text-decoration:none}
.pagination li.active span{background:#337ab7;color:#fff;border-color:#337ab7}
.pagination li.disabled span{color:#999;cursor:not-allowed;background:#f5f5f5}

/* ========== FLOAT BUTTONS ========== */
#floatbtn{position:fixed;right:8px;bottom:60px;z-index:999;display:flex;flex-direction:column;gap:8px}
#floatbtn a{display:flex;flex-direction:column;align-items:center;justify-content:center;width:50px;height:50px;background:#fff;border-radius:50%;box-shadow:0 2px 8px rgba(0,0,0,.15);color:#555;font-size:12px;text-decoration:none;position:relative;transition:all .2s}
#floatbtn a:hover{background:#337ab7;color:#fff}
#floatbtn a em{font-style:normal;font-size:9px;line-height:1.1;text-align:center;margin-top:2px}
#floatbtn a i{font-size:18px !important}
#floatbtn .badge{position:absolute;top:-2px;right:-2px;background:#ff565e;color:#fff;font-size:10px;padding:1px 5px;border-radius:10px;line-height:1.4;min-width:18px;text-align:center;z-index:1000}

/* ========== CART MODAL ========== */
.cart-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:10000;justify-content:center;align-items:center}
.cart-overlay.open{display:flex}
.cart-modal{background:#fff;border-radius:10px;width:90%;max-width:420px;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 10px 40px rgba(0,0,0,.2)}
.cart-header{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid #eee}
.cart-header h3{font-size:16px;font-weight:600;margin:0}
.cart-close{background:none;border:none;font-size:24px;color:#999;line-height:1}
.cart-body{flex:1;overflow-y:auto;padding:14px 18px;min-height:100px}
.cart-empty{color:#999;text-align:center;padding:30px 0;font-size:14px}
.cart-item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #f0f0f0}
.cart-item-img{width:50px;height:50px;border-radius:4px;object-fit:cover;background:#f5f5f5}
.cart-item-name{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cart-item-remove{background:none;border:none;color:#d9534f;font-size:16px;padding:4px 8px}
.cart-footer{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-top:1px solid #eee}
.btn-clear-cart{padding:6px 16px;font-size:13px;border:1px solid #d9534f;color:#d9534f;background:transparent;border-radius:4px;transition:all .2s}
.btn-clear-cart:hover{background:#d9534f;color:#fff}
.cart-total{font-size:14px;font-weight:600;color:#333}

/* ========== RESPONSIVE ========== */
@media(min-width:768px){
  .container{max-width:720px;margin:0 auto}
  .product-list{grid-template-columns:repeat(4,1fr);gap:12px}
  .item-title{font-size:13px}
}
@media(min-width:992px){
  .container{max-width:960px}
  .product-list{grid-template-columns:repeat(5,1fr)}
}
@media(min-width:1200px){
  .container{max-width:1140px}
  .product-list{grid-template-columns:repeat(6,1fr);gap:14px}
}
@media(max-width:400px){
  .product-list{grid-template-columns:repeat(2,1fr);gap:6px}
  .btn-carts{padding:3px 6px;font-size:10px}
}