/* ====== 全局通用样式 common.css ====== */
*{margin:0;padding:0;box-sizing:border-box;font-family:Arial, Helvetica, sans-serif;}
:root{
  --main:#222;
  --secondary:#666;
  --accent:#c89666;
  --light:#f7f7f7;
  --white:#fff;
  --border:#e5e5e5;
}
body{color:var(--main);background:#fff;line-height:1.6;}
ul{list-style:none;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;object-fit:cover;}
.container{width:92%;max-width:1300px;margin:0 auto;}
.btn{
  display:inline-block;padding:12px 26px;background:var(--main);color:#fff;
  border:none;cursor:pointer;transition:0.3s ease;
}
.btn:hover{background:var(--accent);}
.btn-outline{background:transparent;border:1px solid var(--main);color:var(--main);}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);}

/* ========== 头部导航 ========== */
header{border-bottom:1px solid var(--border);position:sticky;top:0;background:#fff;z-index:98;}
.header-inner{display:flex;justify-content:space-between;align-items:center;padding:18px 0;}
.nav-menu{display:flex;gap:32px;}
.nav-menu a:hover{color:var(--accent);}
.header-icons{display:flex;gap:20px;align-items:center;font-size:20px;cursor:pointer;}
.icon-item:hover{color:var(--accent);}

/* ========== 侧边抽屉通用样式（购物车/收藏） ========== */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:99;opacity:0;visibility:hidden;
  transition:0.3s;
}
.drawer-overlay.active{opacity:1;visibility:visible;}
.drawer-panel{
  position:fixed;top:0;right:-420px;width:400px;height:100vh;background:#fff;
  z-index:100;transition:0.3s ease;display:flex;flex-direction:column;
}
.drawer-panel.active{right:0;}
.drawer-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--border);}
.drawer-close{cursor:pointer;font-size:22px;}
.drawer-body{flex:1;padding:20px;overflow-y:auto;}
.drawer-footer{padding:20px;border-top:1px solid var(--border);}
.cart-item,.wish-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border);}
.cart-item img,.wish-item img{width:80px;height:80px;}
.item-del{color:#999;cursor:pointer;margin-top:8px;}
.item-del:hover{color:red;}

/* ========== 首页轮播 ========== */
.banner-slider{width:100%;height:520px;overflow:hidden;position:relative;}
.slide-item{position:absolute;width:100%;height:100%;opacity:0;transition:1s;}
.slide-item.active{opacity:1;}
.slide-item img{width:100%;height:100%;}

/* ========== 商品通用卡片 ========== */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:30px;margin:40px 0;}
.product-card{transition:0.3s;}
.product-card:hover{transform:translateY(-6px);}
.product-img-wrap{position:relative;overflow:hidden;height:320px;background:var(--light);}
.product-card img{width:100%;height:100%;transition:0.4s;}
.product-card:hover img{transform:scale(1.05);}
.product-wish{
  position:absolute;top:12px;right:12px;width:34px;height:34px;background:#fff;
  border-radius:50%;display:grid;place-items:center;cursor:pointer;
}
.product-info{padding:14px 0;}
.product-name{margin-bottom:6px;font-weight:500;}
.product-price{color:var(--accent);font-weight:bold;font-size:18px;}
.product-card .btn{width:100%;margin-top:10px;padding:9px 0;font-size:14px;}

/* ========== 历史浏览区块 ========== */
.recent-view{margin:60px 0;padding:40px 0;border-top:1px solid var(--border);}
.recent-view h3{margin-bottom:24px;font-size:22px;}

/* ========== 分页样式 product-list ========== */
.pagination{display:flex;gap:10px;justify-content:center;margin:50px 0;}
.page-btn{width:40px;height:40px;border:1px solid var(--border);display:grid;place-items:center;cursor:pointer;}
.page-btn.active{background:var(--main);color:#fff;border-color:var(--main);}

/* ========== 详情页布局 product-detail ========== */
.detail-wrap{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin:60px 0;}
.detail-price{font-size:26px;color:var(--accent);margin:16px 0;}
.detail-option{margin:20px 0;}
.detail-option label{display:block;margin-bottom:8px;}
.detail-option select{padding:10px;width:240px;border:1px solid var(--border);}

/* ========== 页面通用区块 about / contact / policy ========== */
.page-head{padding:40px 0;border-bottom:1px solid var(--border);margin-bottom:40px;}
.page-head h1{font-size:32px;}
.page-content{max-width:900px;margin:0 auto 60px;}
.contact-info li{margin:14px 0;font-size:17px;}

/* ========== 页脚 ========== */
footer{background:var(--light);padding:60px 0 30px;margin-top:80px;}
.footer-inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:40px;margin-bottom:40px;}
.footer-col h4{margin-bottom:20px;font-size:18px;}
.footer-col li{margin:10px 0;color:var(--secondary);}
.footer-col a:hover{color:var(--accent);}
.payment-img{width:260px;margin:14px 0;}
.copyright{padding-top:30px;border-top:1px solid var(--border);text-align:center;color:var(--secondary);}

/* 响应式适配 */
@media(max-width:768px){
  .header-inner{flex-direction:column;gap:16px}
  .nav-menu{flex-wrap:wrap;justify-content:center}
  .detail-wrap{grid-template-columns:1fr;}
  .drawer-panel{width:100%;right:-100%;}
  .banner-slider{height:320px;}
}