/* ============ ShopCard 前台样式 ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --warn: #d97706;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --bg: #f9fafb;
    --card: #ffffff;
    --radius: 10px;
}
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg); color: var(--text); line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); font-size: .9em; }
.mt { margin-top: 16px; }
.center { text-align: center; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.break { word-break: break-all; }
.inline { display: inline; }
.muted small { font-size: .85em; }

/* 头部 */
.site-header { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20; }
.header-inner { display: flex; align-items: center; gap: 24px; height: 60px; flex-wrap: wrap; }
.logo { font-size: 20px; font-weight: 800; color: var(--text); }
.main-nav { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
.main-nav a { color: var(--text); font-size: 15px; padding: 4px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover { color: var(--primary); border-color: var(--primary); }
.header-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* 按钮 */
.btn {
    display: inline-block; padding: 8px 16px; border-radius: 8px; border: 1px solid transparent;
    font-size: 14px; cursor: pointer; text-align: center; transition: all .15s; line-height: 1.4;
}
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-lg { padding: 12px 28px; font-size: 16px; }
.btn-block { display: block; width: 100%; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--primary); background: #f3f4f6; }
.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 14px; padding: 0; }
.btn-link:hover { text-decoration: underline; }
.btn-link.text-danger { color: var(--danger); }

/* 输入 */
.input {
    width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; background: #fff; color: var(--text);
}
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.input-sm { width: auto; padding: 6px 10px; }
.textarea { resize: vertical; min-height: 90px; }
select.input { width: auto; }
label { font-size: 13px; color: var(--muted); margin-bottom: 4px; display: block; }
.check-label { display: inline-flex; align-items: center; gap: 6px; color: var(--text); font-size: 14px; }

/* 提示 */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warn { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }

/* 页面主体 */
.page-body { padding: 24px 16px 60px; min-height: calc(100vh - 140px); }
.page-head { margin-bottom: 18px; }
.page-head h1 { font-size: 22px; }
.page-head p { margin-top: 4px; }

/* 搜索 */
.search-bar { display: flex; gap: 8px; margin-bottom: 20px; max-width: 480px; }
.search-bar .input { flex: 1; }

/* 商品网格 */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.product-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: box-shadow .15s, transform .15s; }
.product-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,.08); transform: translateY(-2px); }
.card-cover { display: block; aspect-ratio: 16/9; background: #f3f4f6; overflow: hidden; }
.card-cover img { width: 100%; height: 100%; object-fit: cover; }
.cover-placeholder {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    font-size: 40px; font-weight: 700; color: #d1d5db; background: linear-gradient(135deg, #f9fafb, #eef2f7);
}
.cover-lg { aspect-ratio: 4/3; font-size: 80px; border-radius: var(--radius); }
.card-body { padding: 12px 14px 14px; }
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--primary); }
.card-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.card-price { display: flex; align-items: center; justify-content: space-between; }
.price { font-size: 18px; font-weight: 700; color: var(--danger); }
.price small { font-size: 12px; font-weight: 400; }
.price-lg { font-size: 28px; font-weight: 800; color: var(--danger); }

/* 徽章 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 6px; font-size: 12px; background: #f3f4f6; color: var(--muted); }
.badge-delivery { background: #eff6ff; color: #1d4ed8; }
.badge-verify { background: #fef3c7; color: #b45309; }
.badge-merchant { background: #f0fdf4; color: #15803d; }
.badge-on { background: #ecfdf5; color: #065f46; }
.badge-off { background: #f3f4f6; color: #9ca3af; }
.badge-pending { background: #fef3c7; color: #b45309; }
.badge-paid { background: #eff6ff; color: #1d4ed8; }
.badge-shipped { background: #ecfdf5; color: #065f46; }
.badge-cancelled, .badge-expired { background: #f3f4f6; color: #9ca3af; }

/* 空态 */
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-state h2 { color: var(--text); margin-bottom: 8px; }
.empty-state .btn { margin-top: 16px; }

/* 分页 */
.pagination { display: flex; gap: 12px; align-items: center; justify-content: center; margin-top: 24px; color: var(--muted); }

/* 详情页 */
.product-detail { display: grid; grid-template-columns: 380px 1fr; gap: 28px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.detail-cover { width: 100%; border-radius: var(--radius); }
.detail-right h1 { font-size: 22px; margin-bottom: 10px; }
.detail-meta { margin-bottom: 14px; }
.detail-price { margin: 14px 0 18px; }
.buy-form { margin-top: 10px; }
.qty-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.qty-row input { width: 90px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; }
.buy-actions { display: flex; gap: 10px; }
.buy-now-form { margin-top: 10px; }
.detail-desc { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); }
.detail-desc h3 { margin-bottom: 8px; font-size: 16px; }
.rich-text { color: #374151; font-size: 14px; white-space: pre-wrap; }

/* 面板 */
.panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.panel h3 { font-size: 16px; margin-bottom: 12px; }
.panel-warn { border-color: #fde68a; background: #fffbeb; }
.panel-narrow { max-width: 560px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.panel-head h3 { margin-bottom: 0; }

/* 表格 */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
.table th { background: #f9fafb; color: var(--muted); font-weight: 600; font-size: 13px; white-space: nowrap; }
.table-sm th, .table-sm td { padding: 7px 10px; font-size: 13px; }
.table tr:hover td { background: #fafbfc; }
.qty-input { width: 70px; padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; }

/* 表单 */
.form-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.form-item { flex: 1; min-width: 180px; }
.checkout-submit { margin-top: 18px; display: flex; gap: 12px; align-items: center; }
.order-total { margin-top: 12px; font-size: 15px; }
.group-block { margin-bottom: 16px; }
.group-title { font-weight: 600; margin-bottom: 6px; font-size: 14px; }

/* 支付页 */
.pay-box { max-width: 620px; margin: 0 auto; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.pay-order-row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.pay-amount { text-align: center; padding: 18px 0 6px; }
.amount-lg { font-size: 40px; font-weight: 800; color: var(--danger); line-height: 1.3; }
.countdown { margin-top: 6px; }
.pay-address { margin: 16px 0; }
.address-row { display: flex; gap: 10px; align-items: center; margin-top: 6px; }
.address-code { flex: 1; padding: 10px; background: #f9fafb; border: 1px dashed var(--border); border-radius: 8px; font-size: 13px; word-break: break-all; }
.pay-qr { text-align: center; margin: 14px 0; }
.pay-qr svg { border-radius: 8px; border: 1px solid var(--border); background: #fff; }
.status-result { text-align: center; padding: 30px 10px; }
.status-result .btn { margin-top: 14px; }

/* 订单 */
.order-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 12px; background: #fff; }
.order-row { display: flex; justify-content: space-between; gap: 10px; padding: 4px 0; font-size: 14px; }
.order-summary { margin-bottom: 16px; }
.order-summary-row { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.verify-info { margin-bottom: 12px; }
.delivery-box { background: #f9fafb; border: 1px solid var(--border); border-radius: 8px; padding: 14px; white-space: pre-wrap; font-size: 14px; }
.pay-entry { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.cart-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; flex-wrap: wrap; gap: 12px; }
.cart-total { font-size: 16px; }
.cart-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); background: var(--card); padding: 18px 0; text-align: center; color: var(--muted); font-size: 13px; }

/* 错误页 */
.error-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.error-box { text-align: center; }
.error-code { font-size: 72px; font-weight: 800; color: var(--primary); }
.error-msg { margin: 8px 0 20px; color: var(--muted); }

/* 响应式 */
@media (max-width: 760px) {
    .product-detail { grid-template-columns: 1fr; }
    .header-inner { height: auto; padding: 10px 0; gap: 10px; }
    .main-nav { order: 3; width: 100%; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
    .form-item { min-width: 100%; }
}