/* ===== 数字商城样式 - 蓝色/白色主题 ===== */
:root{--primary:#1a73e8;--primary-dark:#1557b0;--primary-light:#e8f0fe;--ink:#202124;--muted:#5f6368;--line:#dadce0;--bg:#f8f9fa;--card:#ffffff;--success:#0d904f;--warning:#f9ab00;--danger:#d93025;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08);--shadow-lg:0 4px 16px rgba(0,0,0,.12);--max-width:1240px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}button,input,select,textarea{font:inherit}button{cursor:pointer}

/* Header */
.shop-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 3px rgba(0,0,0,.04)}
.shop-header-top{padding:8px 44px;background:#f8f9fa;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.shop-header-top a{color:var(--primary);font-weight:600}.shop-header-top a:hover{text-decoration:underline}
.shop-header-main{height:72px;display:flex;align-items:center;padding:0 44px;gap:32px}
.shop-brand{display:flex;align-items:center;gap:12px;font-weight:900;font-size:22px;color:var(--ink)}
.shop-brand img{width:42px;height:42px}.shop-brand span{color:var(--primary)}
.shop-nav{display:flex;gap:28px;flex:1;font-weight:600;font-size:15px}
.shop-nav a{color:var(--ink);padding:8px 0;border-bottom:2px solid transparent;transition:.15s}
.shop-nav a:hover,.shop-nav a.active{color:var(--primary);border-bottom-color:var(--primary)}
.shop-actions{display:flex;gap:8px;align-items:center}
.cart-badge{position:relative;padding:8px 16px;background:var(--primary-light);color:var(--primary);border-radius:8px;font-weight:700;font-size:14px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:8px;padding:12px 20px;font-weight:600;font-size:15px;transition:.2s}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 2px 8px rgba(26,115,232,.3)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-ghost{background:#f1f3f4;color:var(--ink)}.btn-ghost:hover{background:#e8eaed}
.btn-danger{background:var(--danger);color:#fff}.btn-success{background:var(--success);color:#fff}
.btn-sm{padding:8px 14px;font-size:13px}.btn-lg{padding:14px 28px;font-size:17px}.btn-block{width:100%}

/* Shop Top Section */
.shop-hero{background:linear-gradient(135deg,#1a73e8,#0d47a1);color:#fff;padding:48px 44px;margin-bottom:0}
.shop-hero h1{font-size:40px;margin-bottom:8px}.shop-hero p{color:rgba(255,255,255,.85);font-size:17px}

/* Category Tabs */
.category-tabs{display:flex;gap:8px;flex-wrap:wrap;padding:24px 44px;background:#fff;border-bottom:1px solid var(--line)}
.cat-tab{padding:8px 18px;border:1px solid var(--line);border-radius:99px;font-weight:600;font-size:14px;background:#fff;color:var(--ink);transition:.15s}
.cat-tab:hover,.cat-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Sections */
.section{padding:32px 44px;max-width:var(--max-width);margin:0 auto}

/* Product Grid */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:20px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.product-card img{width:100%;height:200px;object-fit:cover;background:#f8f9fa}
.product-card-body{padding:16px;flex:1;display:flex;flex-direction:column;gap:8px}
.product-card-body h3{font-size:15px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-card-body .price{font-size:20px;font-weight:700;color:var(--danger)}
.tag{display:inline-flex;background:var(--primary-light);color:var(--primary);padding:3px 8px;border-radius:4px;font-size:11px;font-weight:700;width:fit-content}
.merchant-name{font-size:12px;color:var(--muted)}

/* Product Detail */
.product-layout{display:grid;grid-template-columns:1fr 380px;gap:32px}
.product-gallery img{width:100%;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}
.product-info{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.product-info h1{font-size:24px;margin:12px 0 8px}.product-info .price{font-size:32px;color:var(--danger);margin:16px 0}
.specs-row{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.spec-tag{background:#f1f3f4;color:var(--ink);padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600}
.merchant-card{background:#f8f9fa;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-top:20px}

/* Auth */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 150px);padding:40px}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:40px;width:100%;max-width:440px;box-shadow:var(--shadow-lg)}
.auth-card h2{font-size:24px;margin-bottom:4px;color:var(--primary)}.auth-subtitle{color:var(--muted);margin-bottom:24px}
.auth-form{display:flex;flex-direction:column;gap:14px}
.auth-form label{font-weight:600;font-size:14px;color:var(--ink);display:flex;flex-direction:column;gap:6px}
.auth-form input{height:44px;border:1px solid var(--line);border-radius:8px;padding:0 12px;font-size:15px}
.auth-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,115,232,.15)}
.checkbox-label{flex-direction:row!important;align-items:center;gap:8px!important}.checkbox-label input{width:auto;height:auto}
.auth-footer{text-align:center;margin-top:16px;font-size:14px;color:var(--muted)}.auth-footer a{color:var(--primary);font-weight:600}
.auth-hint{text-align:center;margin-top:12px;font-size:12px;color:var(--muted)}

/* Cart */
.cart-item{display:grid;grid-template-columns:80px 1fr 100px 120px 60px;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.cart-item img{width:80px;height:60px;object-fit:cover;border-radius:6px;background:#f8f9fa}
.cart-total{text-align:right;font-size:22px;font-weight:700;padding:20px 0}
.cart-total strong{color:var(--danger)}

/* Checkout */
.checkout-layout{display:grid;grid-template-columns:1fr 380px;gap:24px}
.checkout-main,.checkout-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}

/* Tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
th{background:#f8f9fa;font-weight:600;color:var(--muted)}tr:hover td{background:#fafafa}

/* Forms */
.form-group{margin-bottom:16px}.form-group label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.form-control{width:100%;height:44px;border:1px solid var(--line);border-radius:8px;padding:0 12px;font-size:15px}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,115,232,.15)}
textarea.form-control{height:auto;min-height:90px;padding:12px;resize:vertical}

/* Badges */
.badge{display:inline-flex;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:700}
.badge-pending{background:#fef7e0;color:#e37400}.badge-paid{background:#e8f0fe;color:var(--primary)}
.badge-shipped{background:#e6f4ea;color:var(--success)}.badge-completed{background:#e6f4ea;color:var(--success)}
.badge-cancelled{background:#f1f3f4;color:var(--muted)}

/* Alerts */
.alert{padding:12px 16px;border-radius:8px;font-size:14px;margin-bottom:16px}
.alert-error{background:#fce8e6;color:var(--danger)}.alert-success{background:#e6f4ea;color:var(--success)}

/* Dashboard */
.dashboard-layout{display:grid;grid-template-columns:260px 1fr;gap:24px}
.dashboard-sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.dashboard-sidebar h3{font-size:18px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);color:var(--primary)}
.dashboard-sidebar a{display:block;padding:10px 14px;border-radius:8px;font-weight:600;font-size:14px;color:var(--ink);margin-bottom:4px;transition:.15s}
.dashboard-sidebar a:hover,.dashboard-sidebar a.active{background:var(--primary-light);color:var(--primary)}
.stats-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat-card b{display:block;font-size:28px;color:var(--primary)}.stat-card span{font-size:13px;color:var(--muted)}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.panel h3{font-size:18px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}

/* Admin */
.admin-layout{display:grid;grid-template-columns:240px 1fr;gap:24px}
.admin-sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.admin-sidebar h3{font-size:18px;margin-bottom:16px;color:var(--primary)}
.admin-sidebar a{display:block;padding:10px 14px;border-radius:8px;font-weight:600;font-size:14px;color:var(--ink);margin-bottom:4px}
.admin-sidebar a:hover,.admin-sidebar a.active{background:var(--primary-light);color:var(--primary)}
.admin-kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}
.admin-kpi div{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.admin-kpi b{display:block;font-size:28px;color:var(--primary)}.admin-kpi span{font-size:13px;color:var(--muted)}

/* Search */
.search-bar{display:flex;gap:12px;margin-bottom:20px}
.search-bar input{flex:1;height:44px;border:1px solid var(--line);border-radius:8px;padding:0 12px;font-size:15px}
.search-bar input:focus{outline:none;border-color:var(--primary)}

/* Error */
.error-page{display:flex;align-items:center;justify-content:center;min-height:60vh;padding:40px}
.error-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:48px;max-width:480px;box-shadow:var(--shadow-lg)}
.error-card h1{font-size:80px;color:var(--primary)}.error-card h2{font-size:24px;margin-bottom:12px}

/* Footer */
.shop-footer{background:#f8f9fa;border-top:1px solid var(--line);padding:32px 44px;margin-top:auto}
.shop-footer-inner{display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;max-width:var(--max-width);margin:0 auto}
.shop-footer h4{font-size:14px;color:var(--muted);margin-bottom:8px}
.shop-footer p,.shop-footer a{font-size:13px;color:var(--muted);line-height:2;display:block}
.shop-footer a:hover{color:var(--primary)}
.shop-footer-bottom{text-align:center;padding:12px;font-size:12px;color:var(--muted)}

/* Empty */
.empty-state{text-align:center;padding:48px 24px;color:var(--muted)}
.empty-state h3{font-size:20px;margin-bottom:8px;color:var(--ink)}.empty-state .btn{margin-top:16px}

/* Utilities */
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.text-center{text-align:center}.text-muted{color:var(--muted)}
.flex-between{display:flex;justify-content:space-between;align-items:center}

@media(max-width:1024px){
.product-grid{grid-template-columns:repeat(3,1fr)}.product-layout,.checkout-layout{grid-template-columns:1fr}
.category-tabs{padding:16px 24px}.shop-hero{padding:32px 24px}
.dashboard-layout,.admin-layout{grid-template-columns:1fr}.shop-footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
.product-grid{grid-template-columns:repeat(2,1fr)}.shop-header-main{padding:12px 16px;gap:12px}
.shop-nav{gap:16px;font-size:13px}.shop-hero h1{font-size:28px}
.category-tabs{padding:12px 16px}.section{padding:20px 16px}
.cart-item{grid-template-columns:60px 1fr 80px;gap:8px;font-size:13px}
.shop-footer-inner{grid-template-columns:1fr}
}


.shop-back-link{color:var(--primary);font-weight:600;font-size:13px;text-decoration:none}.shop-back-link:hover{text-decoration:underline}
.shop-btn,.shop-btn-primary,.shop-btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:8px;padding:12px 20px;font-weight:600;font-size:15px;transition:.2s;cursor:pointer;text-decoration:none}
.shop-btn-primary{background:var(--primary);color:#fff}.shop-btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 2px 8px rgba(26,115,232,.3)}
.shop-btn-ghost{background:#f1f3f4;color:var(--ink)}.shop-btn-ghost:hover{background:#e8eaed}
.shop-btn-sm{padding:8px 14px;font-size:13px}
.shop-cat-tab{padding:8px 18px;border:1px solid var(--line);border-radius:99px;font-weight:600;font-size:14px;background:#fff;color:var(--ink);transition:.15s;text-decoration:none;display:inline-block}
.shop-cat-tab:hover,.shop-cat-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.shop-category-tabs{display:flex;gap:8px;flex-wrap:wrap;padding:24px 44px;background:#fff;border-bottom:1px solid var(--line)}
.shop-flex-between{display:flex;justify-content:space-between;align-items:center}
.shop-footer-col h4{font-size:14px;color:var(--muted);margin-bottom:8px}
.shop-footer-col p,.shop-footer-col a{font-size:13px;color:var(--muted);line-height:2;display:block}
.shop-footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;max-width:var(--max-width);margin:0 auto}
.shop-footer-bottom{text-align:center;padding:12px;font-size:12px;color:var(--muted)}
.shop-form-input{width:100%;height:44px;border:1px solid var(--line);border-radius:8px;padding:0 12px;font-size:15px}
.shop-form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,115,232,.15)}
.shop-hero-content{max-width:800px;margin:0 auto}
.shop-main-content{flex:1}
.shop-main-nav{display:flex;align-items:center;height:72px}
.shop-nav-link{color:var(--ink);padding:8px 16px;border-bottom:2px solid transparent;font-weight:600;font-size:15px;transition:.15s;text-decoration:none}
.shop-nav-link:hover,.shop-nav-link.active{color:var(--primary);border-bottom-color:var(--primary)}
.shop-nav-links{display:flex;gap:8px;flex:1}
.shop-pagination{display:flex;gap:8px;align-items:center;justify-content:center;margin-top:20px}
.shop-product-body{padding:16px;flex:1;display:flex;flex-direction:column;gap:8px}
.shop-product-body h3{font-size:15px;line-height:1.4;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.shop-product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.shop-product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.shop-product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:20px}
.shop-product-img{width:100%;height:200px;object-fit:cover;background:#f8f9fa}
.shop-product-merchant{font-size:12px;color:var(--muted)}
.shop-product-price{font-size:20px;font-weight:700;color:var(--danger)}
.shop-tag{display:inline-flex;background:var(--primary-light);color:var(--primary);padding:3px 8px;border-radius:4px;font-size:11px;font-weight:700;width:fit-content}
.shop-empty-state{text-align:center;padding:48px 24px;color:var(--muted)}
.shop-search-form{display:flex;gap:12px;margin-bottom:20px}
.shop-section{padding:32px 44px;max-width:var(--max-width);margin:0 auto}
@media(max-width:1024px){.shop-product-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.shop-product-grid{grid-template-columns:repeat(2,1fr)}.shop-category-tabs{padding:12px 16px}}

.shop-product-title{font-size:15px;line-height:1.4;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.shop-search-bar{display:flex;gap:12px;margin-bottom:20px}
.shop-text-muted{color:var(--muted)}
.shop-top-bar{padding:8px 44px;background:#f8f9fa;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.shop-top-left{display:flex;align-items:center;gap:8px}
.shop-top-right{display:flex;align-items:center;gap:12px}