/* ============================================================
   源码售卖平台 · 统一样式（前后台共用）
   设计：现代简约 / 圆角 / 柔和阴影 / 紫蓝主色
   ============================================================ */
:root{
  --primary:#6366f1; --primary-d:#4f46e5; --primary-l:#a5b4fc;
  --bg:#f5f6fb; --card:#ffffff; --text:#1f2937; --muted:#6b7280;
  --border:#eef0f5; --border-2:#e5e7eb;
  --danger:#ef4444; --ok:#10b981; --warn:#f59e0b; --info:#3b82f6;
  --shadow-sm:0 1px 3px rgba(17,24,39,.06);
  --shadow:0 6px 24px rgba(79,70,229,.08);
  --shadow-lg:0 12px 40px rgba(79,70,229,.14);
  --radius:14px; --radius-sm:10px;
  --grad:linear-gradient(135deg,#6366f1,#8b5cf6);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.65;
  -webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-d)}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;line-height:1.3;color:#111827}
h2{font-size:20px;position:relative;padding-left:12px}
h2::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:4px;border-radius:4px;background:var(--grad)}
h3{font-size:16px}
p{margin-bottom:10px}

/* ---------- 容器 / 顶栏 ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.topbar{background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;
  box-shadow:var(--shadow-sm)}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:.5px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;gap:6px;align-items:center}
.nav a{color:#374151;padding:8px 12px;border-radius:8px;font-weight:500}
.nav a:hover{background:#f1f2fe;color:var(--primary)}
.header-user{display:flex;align-items:center;gap:10px;color:#374151}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--grad);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 20px;border-radius:var(--radius-sm);border:none;background:var(--grad);
  color:#fff;cursor:pointer;font-size:14px;font-weight:600;transition:.2s;
  box-shadow:0 4px 14px rgba(99,102,241,.28)}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(99,102,241,.4);color:#fff}
.btn:active{transform:translateY(0)}
.btn-block{display:flex;width:100%}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary-l);box-shadow:none}
.btn-ghost:hover{background:#f5f3ff;color:var(--primary-d);box-shadow:none}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}
.btn-danger{background:linear-gradient(135deg,#f87171,#ef4444);box-shadow:0 4px 14px rgba(239,68,68,.28)}
.btn-danger:hover{box-shadow:0 8px 22px rgba(239,68,68,.4)}
.btn-success{background:linear-gradient(135deg,#34d399,#10b981);box-shadow:0 4px 14px rgba(16,185,129,.28)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 卡片 ---------- */
.card{background:var(--card);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);margin-bottom:18px;border:1px solid var(--border)}
.hero{border:none!important;color:#fff}
.hero h1{color:#fff}
.hero .muted{color:rgba(255,255,255,.85)!important}

/* ---------- 表单 ---------- */
.input,textarea.input,select.input{width:100%;padding:11px 14px;border:1px solid var(--border-2);
  border-radius:var(--radius-sm);font-size:14px;margin-bottom:14px;background:#fff;color:var(--text);
  transition:.2s;font-family:inherit}
.input:focus,textarea.input:focus,select.input:focus{outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(99,102,241,.15)}
textarea.input{resize:vertical;line-height:1.6}
.frow{display:flex;align-items:center;margin-bottom:12px}
.frow label{width:96px;color:#4b5563;font-size:14px;flex:0 0 96px;font-weight:500}
.radio,.checkbox{display:flex;align-items:center;gap:8px;margin:6px 0;color:#374151;cursor:pointer}
.radio input,.checkbox input{width:16px;height:16px;accent-color:var(--primary)}
label{font-weight:500}

/* ============================================================
   会员中心（web/user 前台用户后台）
   ============================================================ */
/* 会员中心子导航（顶部胶囊 Tab，注入于 common/layout） */
.uc-nav{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:62px;z-index:40}
.uc-nav .container{display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;padding:10px 16px}
.uc-tab{flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;
  background:#f3f4f8;color:#475569;font-size:13px;font-weight:500;white-space:nowrap;transition:.2s}
.uc-tab:hover{background:#eef2ff;color:var(--primary)}
.uc-tab.active{background:var(--grad);color:#fff;box-shadow:0 4px 12px rgba(99,102,241,.3)}
.uc-tab span{font-size:15px}

/* 会员中心首页 Hero */
.uc-hero{display:flex;align-items:center;gap:16px;padding:24px;border-radius:var(--radius);
  background:var(--grad);color:#fff;box-shadow:var(--shadow);margin-bottom:16px;flex-wrap:wrap}
.uc-hero .uc-avatar{width:64px;height:64px;border-radius:50%;border:3px solid rgba(255,255,255,.6);
  object-fit:cover;background:rgba(255,255,255,.2)}
.uc-hero .uc-info{flex:1;min-width:140px}
.uc-hero .uc-name{font-size:20px;font-weight:800;margin-bottom:4px}
.uc-hero .uc-sub{font-size:13px;color:rgba(255,255,255,.9)}
.uc-hero .uc-bal{margin-top:8px;font-size:15px;font-weight:700}
.uc-hero .btn-ghost{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.5);color:#fff}
.uc-hero .btn-ghost:hover{background:rgba(255,255,255,.3);color:#fff}

/* 快捷入口网格 */
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:18px}
.quick-card{display:flex;flex-direction:column;gap:2px;padding:18px;background:var(--card);
  border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);text-decoration:none;
  color:var(--text);transition:.2s}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.quick-card .qi{font-size:26px}
.quick-card .qt{font-weight:700;font-size:15px;margin-top:6px}
.quick-card .qs{font-size:12px;color:var(--muted)}

/* 表单内文字提示 */
.form-tip{font-size:12px;color:var(--muted);margin:-6px 0 14px}
@media(max-width:480px){.quick-grid{gap:10px}.uc-hero{padding:18px}}

/* ---------- 栅格 ---------- */
.row{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:768px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}}

/* ---------- 后台布局 ---------- */
.admin-wrap{display:flex;align-items:flex-start}
.sidebar{width:230px;flex:0 0 230px;background:var(--card);border-right:1px solid var(--border);
  min-height:calc(100vh - 62px);padding:18px 14px;position:sticky;top:62px}
.sidebar a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;
  color:#374151;margin-bottom:5px;font-weight:500;transition:.18s}
.sidebar a .ic{font-size:16px;width:20px;text-align:center}
.sidebar a:hover{background:#f5f3ff;color:var(--primary);transform:translateX(2px)}
.sidebar a.active{background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(99,102,241,.35)}
.admin-main{flex:1;padding:26px;min-width:0}

/* ---------- 二级分类菜单（总后台 / 用户端后台 共用） ---------- */
.menu{display:block}
.menu .m-group{margin-bottom:4px}
.menu .m-title{display:flex;align-items:center;gap:8px;padding:9px 12px;border-radius:10px;
  color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.3px;cursor:pointer;
  user-select:none;transition:.18s;outline:none}
.menu .m-title:hover{background:#f5f3ff;color:var(--primary)}
.menu .m-title:focus-visible{box-shadow:0 0 0 3px rgba(99,102,241,.18)}
.menu .m-title .caret{font-size:9px;line-height:1;opacity:.65;transition:transform .2s;flex:0 0 auto}
.menu .m-group.open .m-title .caret{transform:rotate(90deg)}
.menu .m-title .gi{font-size:14px;flex:0 0 auto}
.menu .m-title .gt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu .m-title .count{font-size:11px;font-weight:600;color:var(--muted);background:#f1f2f7;
  border-radius:999px;padding:1px 7px;flex:0 0 auto}
.menu .m-group.open .m-title .count{background:#eef2ff;color:var(--primary)}
.menu .m-items{display:none;padding:2px 0 6px 0}
.menu .m-group.open .m-items{display:block;animation:m-fade .18s ease}
@keyframes m-fade{from{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:none}}
.menu .m-items a{display:flex;align-items:center;gap:9px;padding:9px 12px 9px 28px;
  border-radius:10px;color:#374151;font-weight:500;font-size:13.5px;transition:.18s;margin-bottom:2px}
.menu .m-items a .ic{font-size:15px;width:18px;text-align:center;flex:0 0 auto}
.menu .m-items a .tx{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu .m-items a:hover{background:#f5f3ff;color:var(--primary);transform:translateX(2px)}
.menu .m-items a.active{background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(99,102,241,.35)}
.menu .m-items a.active:hover{transform:none}

/* 用户端后台：左菜单 + 右内容 */
.uc-wrap{display:flex;align-items:flex-start;gap:20px;max-width:1200px;margin:0 auto;padding:20px 16px}
.uc-side{width:212px;flex:0 0 212px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;position:sticky;top:74px}
.uc-main{flex:1;min-width:0}

/* ---------- 表格 ---------- */
.table-wrap{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  overflow:hidden;border:1px solid var(--border);margin-bottom:18px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:13px 16px;border-bottom:1px solid var(--border);text-align:left;font-size:13px;vertical-align:middle}
.table th{background:#fafbff;color:var(--muted);font-weight:600;white-space:nowrap;
  position:sticky;top:0;font-size:12px;letter-spacing:.3px}
.table tbody tr{transition:.15s}
.table tbody tr:hover{background:#f8f9ff}
.table tbody tr:last-child td{border-bottom:none}
.table a{margin-right:8px;font-weight:500}

/* ---------- 徽标 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-1{background:#dcfce7;color:#15803d}
.badge-0{background:#fee2e2;color:#b91c1c}
.badge-2{background:#fef3c7;color:#b45309}
.badge-3{background:#dbeafe;color:#1d4ed8}
.tag{display:inline-block;background:#eef2ff;color:var(--primary);font-size:11px;padding:3px 9px;border-radius:8px;margin-right:5px;font-weight:500}

/* ---------- 商品卡 ---------- */
.product{background:#fff;border-radius:var(--radius);overflow:hidden;transition:.22s;border:1px solid var(--border)}
.product:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.product img{width:100%;height:168px;object-fit:cover;background:#eef0f5;display:block}
.product .info{padding:14px}
.product .title{font-weight:600;margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#111827}
.product .price{color:var(--danger);font-weight:800;font-size:17px}
.price-lg{font-size:30px;color:var(--danger);font-weight:800}
.muted{color:var(--muted)}

/* ---------- 提示 / 杂项 ---------- */
.center{max-width:440px;margin:70px auto;padding:0 16px;text-align:center}
.notice{padding:14px 18px;border-radius:var(--radius-sm);margin-bottom:14px;font-size:14px;line-height:1.6}
.notice-ok{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.notice-err{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.alert{margin-bottom:14px;padding:14px 18px;border-radius:var(--radius-sm);border-left:4px solid var(--info);background:#eff6ff;color:#1e40af}
.qrcode-box{text-align:center;padding:36px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.divider{height:1px;background:var(--border);margin:18px 0}
.empty{text-align:center;color:var(--muted);padding:48px 0}

/* ---------- 页面标题行 ---------- */
.page-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.page-head .actions{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media(max-width:860px){
  .admin-wrap{flex-direction:column}
  .sidebar{width:100%;flex:none;min-height:auto;position:static;padding:12px 10px;
    border-right:none;border-bottom:1px solid var(--border)}
  .admin-main{padding:18px 14px}
  .uc-wrap{flex-direction:column;gap:14px;padding:14px 12px}
  .uc-side{width:100%;flex:none;position:static}
  .topbar .container{flex-wrap:wrap}
  .nav{overflow-x:auto;-webkit-overflow-scrolling:touch}
}

/* ============================================================
   前台首页增强：轮播 Banner / 分类卡片 / 商品悬浮特效
   ============================================================ */
.search-bar{display:flex;max-width:560px;margin:0 0 24px}
.search-bar .input{margin-bottom:0;border-radius:var(--radius-sm) 0 0 var(--radius-sm);border-right:none}
.search-bar .btn{border-radius:0 var(--radius-sm) var(--radius-sm) 0}

/* 轮播 Banner */
.banner{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:22px}
.banner-track{display:flex;width:100%;transition:transform .6s cubic-bezier(.4,0,.2,1)}
.banner .slide{min-width:100%;height:230px;display:flex;align-items:center;padding:0 56px;color:#fff}
.banner .slide h2{color:#fff;font-size:30px;margin-bottom:10px}
.banner .slide p{color:rgba(255,255,255,.92);font-size:15px;max-width:520px;margin-bottom:6px}
.banner .slide .btn{margin-top:14px}
.banner-dots{position:absolute;bottom:14px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:2}
.banner-dots span{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:.25s}
.banner-dots span.active{background:#fff;width:24px;border-radius:5px}

/* 区块标题 */
.sec-title{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:#111827;margin:28px 0 16px}

/* 分类卡片网格 */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px;margin-bottom:6px}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 18px;
  display:flex;flex-direction:column;gap:8px;transition:.2s}
.cat-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:var(--primary-l)}
.cat-ic{font-size:26px}
.cat-name{font-weight:600;color:#111827}
.cat-subs{display:flex;flex-wrap:wrap;gap:4px}

/* 商品卡：图片缩放 + 骨架屏 + 悬浮查看 */
.product img{transition:transform .4s ease}
.product:hover img{transform:scale(1.06)}
.product-media{position:relative;overflow:hidden;
  background:linear-gradient(100deg,#e9ecf3 30%,#f6f7fb 50%,#e9ecf3 70%);background-size:200% 100%;animation:shimmer 1.4s infinite}
.product-media.img-loaded{animation:none;background:none}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.product-media .buy{position:absolute;left:0;right:0;bottom:0;padding:10px;text-align:center;
  background:linear-gradient(0deg,rgba(79,70,229,.95),rgba(79,70,229,0));color:#fff;font-weight:600;font-size:13px;
  transform:translateY(100%);transition:transform .25s}
.product:hover .product-media .buy{transform:translateY(0)}

/* ============================================================
   统计卡片（后台列表顶部）
   ============================================================ */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:18px}
.stat-card{background:var(--card);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);
  border:1px solid var(--border);display:flex;flex-direction:row;flex-wrap:nowrap;align-items:center;gap:14px;
  transition:.2s;text-decoration:none;color:inherit;min-width:0;overflow:hidden}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.stat-ic{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:24px;flex:0 0 48px;flex-shrink:0;line-height:1}
.stat-info{flex:1 1 auto;min-width:0}
.stat-ic.b{background:#eef2ff;color:#4f46e5}
.stat-ic.g{background:#dcfce7;color:#16a34a}
.stat-ic.o{background:#ffedd5;color:#ea580c}
.stat-ic.r{background:#fee2e2;color:#dc2626}
.stat-ic.p{background:#fae8ff;color:#a21caf}
.stat-ic.c{background:#cffafe;color:#0891b2}
.stat-info .label{color:var(--muted);font-size:13px}
.stat-info .value{font-size:26px;font-weight:800;color:#111827;line-height:1.15}
.stat-info .value small{font-size:14px;font-weight:600;color:var(--muted)}

/* ============================================================
   商品详情页
   ============================================================ */
.breadcrumb{color:var(--muted);font-size:13px;margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.detail-wrap{display:flex;gap:24px;align-items:flex-start;margin-bottom:8px}
.detail-media{flex:0 0 380px;padding:14px}
.detail-media img{width:100%;border-radius:var(--radius-sm);display:block;background:#eef0f5}
.detail-tags{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.detail-info{flex:1;min-width:0}
.detail-title{font-size:24px;margin-bottom:8px}
.buy-box{margin:16px 0;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.buy-actions{display:flex;gap:10px;flex-wrap:wrap}
.merchant-line{margin:14px 0;font-size:14px;color:#374151}
.detail-content{margin-top:10px;line-height:1.8;color:#374151;white-space:pre-wrap}
@media(max-width:768px){.detail-wrap{flex-direction:column}.detail-media{flex:none;width:100%}}

/* 详情头部信息卡（后台 用户/商家/商品 共用） */
.user-head{position:relative;display:flex;align-items:center;gap:18px;padding:22px 24px;margin-bottom:18px;
  background:linear-gradient(135deg,#ffffff,#fafaff);border-radius:var(--radius);box-shadow:var(--shadow)}
.user-head::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:4px;background:var(--grad)}
.user-head .avatar{width:58px;height:58px;border-radius:18px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;flex:0 0 58px;
  box-shadow:var(--shadow-sm);overflow:hidden}
.user-head .avatar img{width:100%;height:100%;object-fit:cover}
.user-head .user-meta{flex:1;min-width:0}
.user-head .uname{font-size:19px;font-weight:700;color:#111827;margin-bottom:4px}
.user-head .user-meta .muted{font-size:13px}
.user-head .user-bal{text-align:right;flex:0 0 auto;padding-left:18px;border-left:1px solid var(--border)}
.user-head .user-bal .label{color:var(--muted);font-size:13px}
.user-head .user-bal .value{font-size:26px;font-weight:800;color:var(--primary-d)}
@media(max-width:768px){.user-head{flex-wrap:wrap}.user-head .user-bal{text-align:left;border-left:none;padding-left:0}}

/* 键值信息行（详情页通用） */
.kv{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed var(--border);font-size:14px}
.kv:last-child{border-bottom:none}
.kv .k{width:96px;flex:0 0 96px;color:var(--muted);font-size:13px;padding-top:1px}
.kv .v{flex:1;min-width:0;word-break:break-all}