/* ============= 商户后台 - 精致大气专业风格 ============= */
:root{
  --primary:#1e40af;
  --primary-dark:#1e3a8a;
  --primary-light:#3b82f6;
  --success:#10b981;
  --warning:#f59e0b;
  --danger:#ef4444;
  --info:#6366f1;
  --bg:#f1f5f9;
  --bg-card:#ffffff;
  --bg-soft:#f8fafc;
  --border:#e2e8f0;
  --border-light:#f1f5f9;
  --text:#1e293b;
  --text-soft:#475569;
  --text-mute:#94a3b8;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04);
  --shadow:0 4px 12px rgba(15,23,42,.06);
  --shadow-lg:0 12px 32px rgba(15,23,42,.08);
  --radius:8px;
  --radius-sm:4px;
  --radius-lg:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;font-size:14px;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul,li{list-style:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none}

/* ========== 登录/注册 ========== */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3a8a 0%,#3b82f6 50%,#6366f1 100%);position:relative;overflow:hidden}
.auth-page::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 30%,rgba(255,255,255,.08) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(255,255,255,.06) 0%,transparent 50%);pointer-events:none}
.auth-card{position:relative;width:380px;padding:36px 30px;background:#fff;border-radius:14px;box-shadow:0 30px 80px rgba(0,0,0,.25)}
.auth-card h2{font-size:22px;font-weight:600;margin-bottom:6px;color:var(--text)}
.auth-card .sub{color:var(--text-soft);margin-bottom:24px;font-size:13px}
.auth-card .form-group{margin-bottom:14px}
.auth-card label{display:block;font-size:13px;color:var(--text-soft);margin-bottom:5px}
.auth-card input{width:100%;height:42px;padding:0 12px;border:1px solid var(--border);border-radius:6px;background:#fff;font-size:14px;transition:border-color .2s}
.auth-card input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,64,175,.1)}
.auth-card .btn-primary{width:100%;height:42px;margin-top:8px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;box-shadow:0 4px 12px rgba(30,64,175,.3)}
.auth-card .btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(30,64,175,.4)}
.auth-card .btn-primary:active{transform:translateY(0)}
.auth-card .links{margin-top:18px;text-align:center;font-size:13px;color:var(--text-soft)}
.auth-card .links a{color:var(--primary);margin:0 4px}
.auth-card .msg{min-height:20px;margin-bottom:8px;font-size:13px;color:var(--danger)}

/* ========== 后台布局 ========== */
.layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.sidebar{background:linear-gradient(180deg,#0f172a 0%,#1e293b 100%);color:#cbd5e1;padding:18px 0;position:sticky;top:0;height:100vh;overflow-y:auto;box-shadow:4px 0 12px rgba(15,23,42,.1)}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(203,213,225,.2);border-radius:3px}
.brand{padding:0 18px 18px;border-bottom:1px solid rgba(255,255,255,.06);margin-bottom:14px}
.brand h3{color:#fff;font-size:16px;font-weight:600;letter-spacing:1px;display:flex;align-items:center;gap:8px}
.brand h3::before{content:"";width:6px;height:18px;background:linear-gradient(180deg,var(--primary-light),var(--primary));border-radius:2px}
.brand .shop-name{font-size:12px;color:#94a3b8;margin-top:4px;letter-spacing:1px}
.menu{padding:0 10px}
.menu-group-title{font-size:11px;color:#64748b;text-transform:uppercase;letter-spacing:2px;padding:14px 10px 6px}
.menu-item{display:flex;align-items:center;gap:10px;padding:10px 12px;color:#cbd5e1;border-radius:6px;font-size:14px;transition:all .15s;cursor:pointer;margin-bottom:2px}
.menu-item .icon{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;font-size:15px}
.menu-item:hover{background:rgba(255,255,255,.04);color:#fff}
.menu-item.active{background:linear-gradient(90deg,rgba(59,130,246,.2) 0%,transparent 100%);color:#fff;font-weight:500;border-left:3px solid var(--primary-light);padding-left:9px}
.menu-item.active::after{content:"";margin-left:auto;width:6px;height:6px;background:var(--primary-light);border-radius:50%;box-shadow:0 0 8px rgba(59,130,246,.6)}

.main{display:flex;flex-direction:column;min-width:0}
.topbar{height:60px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50;box-shadow:var(--shadow-sm)}
.topbar .breadcrumb{color:var(--text-soft);font-size:13px}
.topbar .breadcrumb .sep{margin:0 8px;color:var(--text-mute)}
.topbar .user{display:flex;align-items:center;gap:10px;font-size:13px}
.topbar .avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}
.topbar .btn-logout{padding:6px 14px;border:1px solid var(--border);border-radius:4px;background:#fff;color:var(--text-soft);cursor:pointer;font-size:13px;transition:all .2s}
.topbar .btn-logout:hover{border-color:var(--danger);color:var(--danger)}

.content{padding:22px 24px;flex:1}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.page-title{font-size:20px;font-weight:600;color:var(--text)}
.page-desc{color:var(--text-soft);font-size:13px;margin-top:2px}

/* ========== 卡片 ========== */
.card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card-head{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}
.card-head h3{font-size:15px;font-weight:600;color:var(--text)}
.card-body{padding:20px}

/* ========== 统计卡片 ========== */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:18px}
.stat-card{background:#fff;border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.stat-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(15,23,42,.08)}
.stat-card::before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--primary)}
.stat-card::after{content:"";position:absolute;top:-30px;right:-30px;width:120px;height:120px;border-radius:50%;background:rgba(30,64,175,.05)}
.stat-card.success::before{background:var(--success)}
.stat-card.success::after{background:rgba(16,185,129,.06)}
.stat-card.warning::before{background:var(--warning)}
.stat-card.warning::after{background:rgba(245,158,11,.07)}
.stat-card.danger::before{background:var(--danger)}
.stat-card.danger::after{background:rgba(239,68,68,.07)}
.stat-card.info::before{background:var(--info)}
.stat-card.info::after{background:rgba(14,165,233,.07)}
.stat-card .label{font-size:13px;color:var(--text-soft);margin-bottom:8px;display:flex;align-items:center;gap:6px}
.stat-card .value{font-size:28px;font-weight:700;color:var(--text);font-family:Georgia,serif;line-height:1.1;letter-spacing:-.5px}
.stat-card .value small{font-size:13px;color:var(--text-mute);font-weight:400;margin-left:4px;font-family:inherit}
.stat-card .trend{font-size:12px;color:var(--text-mute);margin-top:10px;display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:10px;background:#f1f5f9}
.stat-card .trend.up{color:var(--success);background:#d1fae5}
.stat-card .trend.down{color:var(--danger);background:#fee2e2}
.stat-card .trend .arrow{font-size:11px;font-weight:700}
.stat-card .icon-box{position:relative;z-index:1;width:42px;height:42px;border-radius:10px;background:rgba(30,64,175,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.stat-card .icon-box svg{width:22px;height:22px}
.stat-card.success .icon-box{background:rgba(16,185,129,.12);color:var(--success)}
.stat-card.warning .icon-box{background:rgba(245,158,11,.12);color:var(--warning)}
.stat-card.danger .icon-box{background:rgba(239,68,68,.12);color:var(--danger)}
.stat-card.info .icon-box{background:rgba(14,165,233,.12);color:var(--info)}

/* ========== 按钮 ========== */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;color:var(--text-soft);font-size:13px;cursor:pointer;transition:all .2s}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;border-color:var(--primary-dark)}
.btn-success{background:var(--success);color:#fff;border-color:var(--success)}
.btn-success:hover{background:#059669;color:#fff;border-color:#059669}
.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}
.btn-danger:hover{background:#dc2626;color:#fff;border-color:#dc2626}
.btn-sm{padding:4px 10px;font-size:12px}
.btn-lg{padding:10px 22px;font-size:14px}

/* ========== 选项卡(Tabs) ========== */
.tabs{display:flex;gap:4px;border-bottom:2px solid var(--border-light);padding:0 4px;position:relative}
.tab{padding:10px 22px;font-size:14px;color:var(--text-soft);cursor:pointer;position:relative;transition:color .18s ease;font-weight:500;border-radius:6px 6px 0 0;user-select:none;letter-spacing:.5px}
.tab:hover{color:var(--primary);background:rgba(59,130,246,.04)}
.tab.active{color:var(--primary);font-weight:600}
.tab.active::after{content:"";position:absolute;left:14%;right:14%;bottom:-2px;height:3px;background:linear-gradient(90deg,var(--primary-light) 0%,var(--primary) 100%);border-radius:3px 3px 0 0;box-shadow:0 -1px 6px rgba(59,130,246,.3);animation:tabIn .25s ease}
@keyframes tabIn{from{transform:scaleX(.4);opacity:0}to{transform:scaleX(1);opacity:1}}

/* ========== 表单 ========== */
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-bottom:14px}
.form-field label{display:block;font-size:13px;color:var(--text-soft);margin-bottom:5px}
.form-field input,.form-field select,.form-field textarea{width:100%;height:36px;padding:0 12px;border:1px solid var(--border);border-radius:6px;background:#fff;font-size:13px;transition:border-color .2s}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,64,175,.1)}
.form-field textarea{height:80px;padding:8px 12px;resize:vertical}
.form-field .hint{font-size:12px;color:var(--text-mute);margin-top:4px}

/* ========== 开关 ========== */
.switch{position:relative;display:inline-block;width:44px;height:22px;vertical-align:middle}
.switch input{opacity:0;width:0;height:0}
.switch-slider{position:absolute;cursor:pointer;inset:0;background:#cbd5e1;border-radius:22px;transition:.25s}
.switch-slider::before{content:"";position:absolute;height:18px;width:18px;left:2px;top:2px;background:#fff;border-radius:50%;transition:.25s;box-shadow:0 1px 3px rgba(0,0,0,.15)}
.switch input:checked + .switch-slider{background:var(--primary,#1e40af)}
.switch input:checked + .switch-slider::before{transform:translateX(22px)}

/* ========== 表格 ========== */
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:13px}
.table thead th{background:var(--bg-soft);color:var(--text-soft);font-weight:500;text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);white-space:nowrap}
.table tbody td{padding:12px 14px;border-bottom:1px solid var(--border-light);color:var(--text)}
.table tbody tr:hover{background:var(--bg-soft)}
.table .num{font-family:Georgia,serif;font-variant-numeric:tabular-nums}
.table .text-center{text-align:center}
.table .text-right{text-align:right}
.table .empty{padding:40px;text-align:center;color:var(--text-mute)}

/* ========== 状态标签 ========== */
.tag{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:500;line-height:1.6}
.tag-success{background:rgba(16,185,129,.1);color:#059669}
.tag-warning{background:rgba(245,158,11,.12);color:#b45309}
.tag-danger{background:rgba(239,68,68,.1);color:#b91c1c}
.tag-info{background:rgba(99,102,241,.1);color:#4338ca}
.tag-default{background:var(--border-light);color:var(--text-soft)}
.tag-primary{background:rgba(30,64,175,.1);color:var(--primary)}

/* ========== 分页 ========== */
.pagination{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 20px;border-top:1px solid var(--border-light);background:linear-gradient(180deg,transparent 0%,rgba(99,102,241,.025) 100%);flex-wrap:wrap}
.pagination .pg-left,.pagination .pg-center,.pagination .pg-right{display:flex;align-items:center;gap:8px}
.pagination .pg-info{font-size:13px;color:var(--text-soft);letter-spacing:.3px}
.pagination .pg-info b{color:var(--text);font-weight:600;margin:0 2px;font-family:Georgia,serif;font-size:14px}
.pagination .pg-sep{color:var(--border);margin:0 2px}
.pagination .pg-center{gap:6px;justify-content:center;flex:1}
.pagination .pg-btn{appearance:none;min-width:36px;height:36px;padding:0 10px;border:1px solid var(--border);background:#fff;color:var(--text-soft);border-radius:6px;cursor:pointer;font-size:13px;font-family:inherit;line-height:1;display:inline-flex;align-items:center;justify-content:center;transition:all .18s ease;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.pagination .pg-btn:hover:not(.active):not(.disabled):not(.dots){border-color:var(--primary);color:var(--primary);background:linear-gradient(180deg,#fff 0%,rgba(59,130,246,.06) 100%);transform:translateY(-1px);box-shadow:0 4px 10px rgba(30,64,175,.12)}
.pagination .pg-btn.active{background:linear-gradient(180deg,var(--primary-light) 0%,var(--primary) 100%);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px rgba(30,64,175,.32);font-weight:600}
.pagination .pg-btn.disabled{cursor:not-allowed;opacity:.4;background:var(--bg-soft);color:var(--text-mute);box-shadow:none;transform:none}
.pagination .pg-btn.dots{cursor:default;border-color:transparent;background:transparent;color:var(--text-mute);box-shadow:none;letter-spacing:1px}
.pagination .pg-btn.dots:hover{transform:none;background:transparent;color:var(--text-mute)}
.pagination .pg-btn.pg-arrow{font-size:18px;font-weight:500;color:var(--primary);min-width:36px;background:linear-gradient(180deg,#fff 0%,rgba(59,130,246,.04) 100%)}
.pagination .pg-btn.pg-arrow:disabled{background:var(--bg-soft);color:var(--text-mute);opacity:.4}
.pagination .pg-jump{font-size:13px;color:var(--text-soft)}
.pagination .pg-input{width:54px;height:34px;padding:0 6px;text-align:center;border:1px solid var(--border);border-radius:6px;font-size:13px;font-family:Georgia,serif;color:var(--text);background:#fff;outline:none;transition:border-color .15s,box-shadow .15s;appearance:textfield;-moz-appearance:textfield}
.pagination .pg-input::-webkit-outer-spin-button,.pagination .pg-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.pagination .pg-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.pagination .pg-go{height:34px;padding:0 14px;background:linear-gradient(180deg,var(--primary-light) 0%,var(--primary) 100%);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:13px;font-family:inherit;letter-spacing:1px;transition:opacity .18s,transform .18s;box-shadow:0 2px 6px rgba(30,64,175,.22)}
.pagination .pg-go:hover{opacity:.92;transform:translateY(-1px)}
.pagination .pg-go:active{transform:translateY(0)}
@media (max-width:760px){.pagination{flex-direction:column;gap:12px}.pagination .pg-center{order:2}.pagination .pg-left,.pagination .pg-right{order:1;justify-content:center;width:100%}.pagination .pg-left{order:3}}

/* ========== 工具栏 ========== */
.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px 16px;border-bottom:1px solid var(--border-light)}
.toolbar .spacer{flex:1}
.toolbar input,.toolbar select{height:34px;padding:0 10px;border:1px solid var(--border);border-radius:4px;background:#fff;font-size:13px}

/* ========== 模态框 ========== */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:center;justify-content:center;z-index:200;backdrop-filter:blur(2px)}
.modal.show{display:flex;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-box{background:#fff;border-radius:var(--radius-lg);width:520px;max-width:calc(100vw - 40px);max-height:90vh;overflow:auto;box-shadow:0 20px 60px rgba(15,23,42,.25);animation:slideUp .25s ease}
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.modal-head{padding:18px 22px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.modal-head h3{font-size:16px;font-weight:600}
.modal-head .close{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-mute);cursor:pointer}
.modal-head .close:hover{background:var(--bg-soft);color:var(--text)}
.modal-body{padding:20px 22px}
.modal-foot{padding:14px 22px;border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:10px;background:var(--bg-soft)}

/* ========== 提示 ========== */
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-20px);padding:10px 18px;background:#1e293b;color:#fff;border-radius:6px;font-size:13px;opacity:0;pointer-events:none;transition:all .25s;z-index:999;box-shadow:0 8px 24px rgba(15,23,42,.3)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}

/* ========== 错误页 ========== */
.err-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}
.err-page h1{font-size:80px;color:var(--primary);font-family:Georgia,serif;font-weight:600}
.err-page h2{font-size:24px;color:var(--text);margin-top:8px}
.err-page p{color:var(--text-soft);margin:14px 0 20px}
.err-page a{padding:8px 20px;background:var(--primary);color:#fff;border-radius:4px;font-size:13px}

/* ========== 响应式 ========== */
@media (max-width:992px){.layout{grid-template-columns:1fr}.sidebar{display:none}}
@media (max-width:600px){.stat-grid{grid-template-columns:1fr 1fr}.toolbar{flex-direction:column;align-items:stretch}.topbar{padding:0 12px}}