/* ============================================================
   大可发卡 - 全站样式
   ============================================================ */
:root{
  --primary:#4f6ef7;
  --primary-d:#3b55d9;
  --grad:linear-gradient(135deg,#4f6ef7,#6d5ce0);
  --red:#ff4d4f;
  --green:#34c759;
  --orange:#ff9500;
  --ink:#2b2f5c;
  --muted:#9094ad;
  --line:#ececf3;
  --bg:#f5f6fa;
  --card:#ffffff;
  --radius:12px;
  --shadow:0 6px 24px rgba(60,64,120,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  background:var(--bg);color:#333;font-size:14px;line-height:1.6;
}
a{color:var(--primary);text-decoration:none}
a:hover{opacity:.85}
code{font-family:Consolas,Monaco,"Courier New",monospace}

/* ---------- 顶部导航 ---------- */
.site-header{background:#fff;box-shadow:0 2px 12px rgba(60,64,120,.06);position:sticky;top:0;z-index:20}
.header-inner{max-width:1100px;margin:0 auto;padding:0 20px;height:62px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:20px}
.brand:hover{opacity:1}
.brand-logo{
  width:34px;height:34px;border-radius:9px;background:var(--grad);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;
}
.brand-logo.lg{width:56px;height:56px;font-size:30px;border-radius:14px}
.brand-name{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.site-nav a{color:#555;margin-left:26px;font-weight:500}
.site-nav a:hover{color:var(--primary)}

.notice{background:#fff8e6;border-bottom:1px solid #ffe7a8}
.notice-inner{max-width:1100px;margin:0 auto;padding:8px 20px;color:#9a6b00;font-size:13px}

.container{max-width:1100px;margin:26px auto;padding:0 20px;min-height:calc(100vh - 230px)}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-block;border:1px solid transparent;border-radius:9px;padding:9px 18px;
  font-size:14px;font-weight:600;cursor:pointer;line-height:1.2;background:#eef0f7;color:#444;
  transition:.15s;white-space:nowrap;
}
.btn:hover{opacity:.9}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-block{display:block;width:100%;text-align:center}
.btn-primary{background:var(--grad);color:#fff}
.btn-danger{background:#fff0f0;color:var(--red);border-color:#ffd9d9}
.btn-danger:hover{background:var(--red);color:#fff;opacity:1}
.btn-outline{background:#fff;border-color:#d9dce8;color:#555}
.btn-ghost{background:#f1f2f8;color:#555}
.btn-disabled{background:#ececf3;color:#aaa;cursor:not-allowed}
.text-input,.select,.textarea{
  width:100%;border:1px solid #dde0ec;border-radius:9px;padding:10px 12px;font-size:14px;
  outline:none;background:#fff;font-family:inherit;
}
.text-input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,110,247,.12)}
.textarea{resize:vertical;line-height:1.7}
.field-label{display:block;font-weight:600;color:#444;margin:14px 0 7px;font-size:13px}
.field-label small,.field-label i{color:var(--muted);font-weight:400;font-style:normal}
.field-label i{color:var(--red)}

.alert{padding:11px 15px;border-radius:10px;margin-bottom:14px;font-size:13.5px}
.alert-ok{background:#eafaf0;border:1px solid #b8ebca;color:#1f8a4c}
.alert-error{background:#fff2f0;border:1px solid #ffccc7;color:#cf392e}
.alert-warn{background:#fff8e6;border:1px solid #ffe7a8;color:#9a6b00}

.badge{display:inline-block;padding:2px 10px;border-radius:20px;font-size:12px;font-weight:600}
.badge-ok{background:#eafaf0;color:#1f8a4c}
.badge-warn{background:#fff4e5;color:#d46b08}
.badge-bad{background:#fff0f0;color:#cf392e}
.badge-muted{background:#f0f1f6;color:#8a8ea5}

.panel{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:18px}
.empty{background:#fff;border-radius:var(--radius);padding:60px 20px;text-align:center;color:var(--muted);box-shadow:var(--shadow)}

/* ---------- 首页 ---------- */
.hero{text-align:center;padding:34px 0 26px}
.hero h1{font-size:30px;color:var(--ink);letter-spacing:2px}
.hero p{color:var(--muted);margin-top:8px;font-size:14px}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.product-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;display:flex;flex-direction:column;position:relative;transition:.2s}
.product-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(60,64,120,.14)}
.product-name{font-size:16px;font-weight:700;color:var(--ink)}
.product-desc{color:var(--muted);font-size:12.5px;margin:8px 0 16px;min-height:36px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:auto}
.product-price{color:var(--red);font-size:22px;font-weight:800}
.product-stock{position:absolute;right:16px;top:16px;font-size:12px;color:var(--muted);background:#f5f6fa;border-radius:20px;padding:2px 10px}

/* ---------- 商品详情页 ---------- */
.product-detail{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}
.detail-title{font-size:24px;color:var(--ink);margin-bottom:14px}
.detail-price-box{background:linear-gradient(135deg,#fff3f3,#fff);border:1px solid #ffe1e1;border-radius:12px;padding:18px 20px;display:flex;align-items:baseline;gap:16px;margin-bottom:22px}
.detail-price{color:var(--red);font-size:32px;font-weight:800}
.detail-stock{color:var(--muted);font-size:13px}
.qty-box{display:flex;align-items:center;gap:0}
.qty-btn{width:40px;height:40px;border:1px solid #dde0ec;background:#f7f8fc;font-size:18px;cursor:pointer;border-radius:9px 0 0 9px}
.qty-btn:last-child{border-radius:0 9px 9px 0}
.qty-input{width:90px !important;height:40px;text-align:center;border-radius:0 !important;border-left:0;border-right:0;box-shadow:none !important}
.total-line{margin:18px 0 10px;font-size:15px;color:#555}
.total-line strong{color:var(--red);font-size:22px}
.detail-side{background:#f8f9fd;border-radius:12px;padding:22px}
.side-h{font-weight:700;color:var(--ink);margin-bottom:10px;font-size:15px}
.side-desc{color:#666;font-size:13.5px;white-space:pre-wrap}
.side-tips{margin-top:16px;list-style:none;color:#777;font-size:13px;line-height:2.1}

/* ---------- 收银台 ---------- */
.pay-panel{max-width:640px;margin:0 auto}
.pay-title{text-align:center;font-size:20px;color:var(--ink);margin-bottom:20px}
.pay-order{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:20px}
.pay-row{display:flex;justify-content:space-between;padding:11px 18px;font-size:14px;border-bottom:1px solid var(--line)}
.pay-row:last-child{border-bottom:0}
.pay-row span{color:var(--muted)}
.pay-amount{background:#fff8f8;align-items:center}
.pay-amount b{color:var(--red);font-size:22px}
.pay-methods{display:flex;flex-direction:column;gap:12px}
.pay-method{display:flex;align-items:center;gap:14px;border:2px solid var(--line);border-radius:12px;padding:16px 18px;transition:.15s}
a.pay-method{color:#333}
.pay-method:hover{border-color:var(--primary);opacity:1}
.pay-method-ico{font-size:26px}
.pay-method-name{font-weight:700;font-size:15px}
.pay-method-go{margin-left:auto;color:var(--primary);font-weight:700}
.manual{background:#fafbff;align-items:flex-start}
.manual-info b{font-size:14.5px}
.manual-info p{color:var(--muted);font-size:13px;margin-top:3px}
.test-pay{margin-top:2px}
.pay-foot{text-align:center;margin-top:18px}

/* ---------- 查询页 ---------- */
.query-panel{max-width:680px;margin:0 auto}
.page-title{font-size:20px;color:var(--ink);margin-bottom:18px}
.query-form{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.query-form .text-input{flex:1;min-width:160px}
.order-result{border:1px solid var(--line);border-radius:12px;padding:20px}
.result-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.result-head b{margin-left:8px}
.result-head>span{color:var(--muted);font-size:13px}
.result-goods{margin:14px 0;padding:12px 0;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);color:#555}
.cards-box{margin-top:16px}
.cards-tip{font-weight:600;color:#1f8a4c;margin-bottom:10px}
.card-item{display:flex;align-items:center;gap:10px;background:#f8f9fd;border:1px solid #e8eaf4;border-radius:10px;padding:10px 14px;margin-bottom:8px}
.card-index{width:22px;height:22px;border-radius:50%;background:var(--grad);color:#fff;font-size:12px;display:inline-flex;align-items:center;justify-content:center;flex:none}
.card-content{flex:1;word-break:break-all;font-size:13.5px;color:#333;background:transparent;user-select:all}
.card-cell{color:#555}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:40px;padding:26px 20px;text-align:center;color:var(--muted);font-size:13px}
.copyright{margin-top:8px;font-size:12px;color:#b0b4c5}

/* ============================================================
   后台
   ============================================================ */
.login-body{background:var(--grad);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-box{background:#fff;border-radius:16px;padding:36px 34px;width:100%;max-width:400px;box-shadow:0 20px 60px rgba(40,40,90,.3)}
.login-brand{text-align:center;margin-bottom:22px}
.login-brand h1{font-size:24px;color:var(--ink);margin:12px 0 4px}
.login-brand p{color:var(--muted);font-size:13px}
.login-back{text-align:center;margin-top:16px;font-size:13px}

.admin-body{background:var(--bg)}
.admin-shell{display:flex;min-height:100vh}
.admin-sidebar{width:212px;background:#1f2340;display:flex;flex-direction:column;flex:none;position:sticky;top:0;height:100vh}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:20px 18px;color:#fff}
.sidebar-brand b{font-size:16px;display:block;line-height:1.2}
.sidebar-brand small{color:#8b90b8;font-size:11px}
.sidebar-nav{flex:1;padding:8px 10px}
.sidebar-nav a{display:flex;align-items:center;gap:10px;color:#c4c8e8;padding:11px 14px;border-radius:9px;margin-bottom:4px;font-size:14px}
.sidebar-nav a:hover{background:#2a2f55;color:#fff;opacity:1}
.sidebar-nav a.active{background:var(--primary);color:#fff}
.nav-ico{font-size:16px}
.nav-badge{margin-left:auto;background:var(--red);color:#fff;border-radius:20px;font-size:11px;padding:1px 8px}
.sidebar-foot{padding:14px;border-top:1px solid #2f345c}
.sidebar-foot a{display:block;color:#8b90b8;font-size:13px;padding:7px 10px}
.sidebar-foot a:hover{color:#fff}

.admin-main{flex:1;min-width:0}
.admin-topbar{background:#fff;height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 26px;box-shadow:0 1px 8px rgba(60,64,120,.06);position:sticky;top:0;z-index:10}
.admin-topbar h1{font-size:18px;color:var(--ink)}
.topbar-user{color:var(--muted);font-size:13px}
.admin-content{padding:22px 26px}

/* 统计卡片 */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-bottom:18px}
.stat-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.stat-num{font-size:24px;font-weight:800;color:var(--ink)}
.stat-label{color:var(--muted);font-size:13px;margin-top:4px}
.text-red{color:var(--red)!important}.text-green{color:var(--green)!important}
.text-orange{color:var(--orange)!important}.text-blue{color:var(--primary)!important}

.dash-cols{display:grid;grid-template-columns:1.6fr 1fr;gap:18px}
.panel-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.panel-h h2{font-size:16px;color:var(--ink);display:flex;align-items:center;gap:10px}
.more{font-size:13px}

/* 表格 */
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{background:#f7f8fc;color:#6a6f8e;font-weight:600;text-align:center;padding:11px 10px;font-size:13px;white-space:nowrap}
.table td{padding:11px 10px;text-align:center;border-top:1px solid var(--line);color:#444}
.table td.left{text-align:left}
.table tbody tr:hover{background:#fafbff}
.muted{color:var(--muted)}.small{font-size:12px}
.empty-cell{text-align:center;color:var(--muted);padding:34px 0!important}
.actions{white-space:nowrap}
.inline-form{display:inline}

/* 工具栏 / 筛选 / 分页 */
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.filter-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.filter-bar .text-input{width:210px}
.select{width:auto;min-width:120px;padding:9px 12px}
.tabs{display:flex;gap:4px;background:#fff;border-radius:10px;padding:4px;box-shadow:var(--shadow)}
.tab{padding:7px 16px;border-radius:8px;color:#666;font-size:13.5px}
.tab.active{background:var(--primary);color:#fff}
.pager{text-align:center;margin:18px 0 4px}
.pager a{display:inline-block;min-width:34px;padding:7px 10px;margin:0 3px;background:#fff;border:1px solid var(--line);border-radius:8px;font-size:13px}
.pager a.current{background:var(--primary);color:#fff;border-color:var(--primary)}

/* 仪表盘右侧 */
.low-list{list-style:none}
.low-list li{display:flex;justify-content:space-between;padding:9px 4px;border-bottom:1px dashed var(--line);font-size:13.5px}
.quick-add{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.quick-add h3{font-size:14px;color:var(--ink);margin-bottom:10px}
.quick-add .btn{margin:0 6px 8px 0}

/* 表单面板 */
.form-panel{max-width:760px}
.settings-cols{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;align-items:start}
.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.switch-row label{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px}
.form-actions{margin-top:20px;display:flex;gap:10px}
.hint{color:var(--muted);font-size:12px;margin-top:6px;display:block;word-break:break-all}
.safe-tip{margin-top:22px;background:#f7f8fc;border-radius:10px;padding:14px 16px}
.safe-tip h3{font-size:14px;margin-bottom:8px;color:var(--ink)}
.safe-tip p{color:var(--muted);font-size:12.5px;line-height:1.9}

.import-panel .import-line{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap}

/* 订单详情 */
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:18px}
.detail-item{padding:13px 16px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}
.detail-item:nth-child(3n){border-right:0}
.detail-item label{display:block;color:var(--muted);font-size:12px;margin-bottom:3px}
.detail-actions{display:flex;gap:12px;margin-top:6px}
.admin-cards{margin-bottom:18px}

/* 响应式 */
@media (max-width:900px){
  .admin-sidebar{position:fixed;left:-220px;z-index:50;transition:.2s}
  .product-detail,.dash-cols,.settings-cols{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr 1fr}
  .detail-item:nth-child(3n){border-right:1px solid var(--line)}
  .detail-item:nth-child(2n){border-right:0}
}
@media (max-width:560px){
  .site-nav a{margin-left:14px;font-size:13px}
  .hero h1{font-size:23px}
  .detail-grid{grid-template-columns:1fr}
  .detail-item{border-right:0!important}
  .form-row-2{grid-template-columns:1fr}
}