:root{
  --bg:#f5f6f8; --panel:#fff; --line:#e6e8eb; --line2:#f0f1f3;
  --text:#1f2329; --text2:#646a73; --text3:#8f959e;
  --primary:#2b5aed; --primary-dark:#1e46c9; --primary-light:#eef2ff;
  --green:#1a9c5b; --green-light:#e8f7ef;
  --orange:#e07b13; --orange-light:#fdf3e6;
  --red:#d8332e; --red-light:#fdeceb;
  --radius:8px; --shadow:0 2px 12px rgba(31,35,41,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
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:1.6;
  -webkit-font-smoothing:antialiased;
}
.hidden{display:none !important}
a{color:var(--primary);text-decoration:none}

/* ---------- 登录 ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,#2b5aed 0%,#1a3a9e 100%);padding:20px}
.login-card{background:#fff;border-radius:16px;padding:44px 40px;width:100%;max-width:400px;
  box-shadow:0 20px 60px rgba(0,0,0,.2)}
.login-logo{width:54px;height:54px;border-radius:14px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:600;margin-bottom:18px}
.login-card h1{font-size:22px;font-weight:600}
.login-sub{color:var(--text3);margin-bottom:28px;font-size:13px}
.login-err{color:var(--red);font-size:13px;margin-top:14px;min-height:20px;text-align:center}

.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text2);margin-bottom:7px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);
  font-size:14px;font-family:inherit;background:#fff;transition:border-color .15s;color:var(--text)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary)}
.field .hint{font-size:12px;color:var(--text3);margin-top:5px;line-height:1.5}
.field-row{display:flex;gap:14px}
.field-row .field{flex:1}

/* ---------- 按钮 ---------- */
.btn{padding:8px 16px;border:1px solid var(--line);border-radius:6px;background:#fff;
  cursor:pointer;font-size:13px;font-family:inherit;color:var(--text);transition:all .15s;white-space:nowrap}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff}
.btn-danger{color:var(--red);border-color:#f3c9c7}
.btn-danger:hover{background:var(--red);border-color:var(--red);color:#fff}
.btn-block{width:100%;padding:11px;font-size:15px;margin-top:8px}
.btn-sm{padding:4px 10px;font-size:12px}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:210px;background:#1f2329;color:#c9cdd4;display:flex;flex-direction:column;
  position:fixed;top:0;bottom:0;left:0;z-index:10}
.brand{padding:20px 20px 18px;font-size:16px;font-weight:600;color:#fff;display:flex;align-items:center;gap:9px}
.brand-logo{width:26px;height:26px;border-radius:7px;background:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:14px}
.nav{flex:1;padding:6px 10px;overflow-y:auto}
.nav-item{display:block;padding:9px 12px;border-radius:6px;color:#c9cdd4;font-size:14px;
  cursor:pointer;margin-bottom:2px;transition:all .15s}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-item.active{background:var(--primary);color:#fff}
.sidebar-foot{padding:14px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px}
.admin-name{color:#fff;margin-bottom:8px;font-size:13px}
.sidebar-foot a{color:#8f959e;display:inline-block;margin-right:14px;font-size:12px}
.sidebar-foot a:hover{color:#fff}

.main{flex:1;margin-left:210px;min-width:0}
.topbar{background:#fff;padding:0 26px;height:56px;display:flex;align-items:center;
  justify-content:space-between;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.topbar h2{font-size:16px;font-weight:600}
.page-actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.content{padding:22px 26px 60px}

/* ---------- 卡片 ---------- */
.card{background:var(--panel);border-radius:var(--radius);padding:20px;margin-bottom:18px;box-shadow:var(--shadow)}
.card-title{font-size:15px;font-weight:600;margin-bottom:16px;display:flex;
  justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:18px}
.stat{background:#fff;border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.stat-label{font-size:13px;color:var(--text3);margin-bottom:6px}
.stat-value{font-size:26px;font-weight:600;line-height:1.2}
.stat-sub{font-size:12px;color:var(--text3);margin-top:5px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:11px 12px;background:#fafbfc;color:var(--text2);
  font-weight:500;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:11px 12px;border-bottom:1px solid var(--line2);vertical-align:middle}
tr:hover td{background:#fafbfc}
.table-empty{text-align:center;padding:48px 0;color:var(--text3)}

.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;line-height:1.6}
.tag-green{background:var(--green-light);color:var(--green)}
.tag-orange{background:var(--orange-light);color:var(--orange)}
.tag-red{background:var(--red-light);color:var(--red)}
.tag-blue{background:var(--primary-light);color:var(--primary)}
.tag-gray{background:#f0f1f3;color:var(--text3)}

.switch{position:relative;display:inline-block;width:42px;height:23px;vertical-align:middle}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;cursor:pointer;inset:0;background:#c9cdd4;border-radius:23px;transition:.2s}
.slider:before{content:"";position:absolute;height:19px;width:19px;left:2px;bottom:2px;
  background:#fff;border-radius:50%;transition:.2s}
input:checked + .slider{background:var(--green)}
input:checked + .slider:before{transform:translateX(19px)}

.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:16px;font-size:13px;color:var(--text2)}

.filters{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.filters input,.filters select{padding:7px 10px;border:1px solid var(--line);border-radius:6px;
  font-size:13px;font-family:inherit;min-width:130px}
.filters input:focus,.filters select:focus{outline:none;border-color:var(--primary)}

.limit-input{width:64px;padding:5px 8px;border:1px solid var(--line);border-radius:5px;
  font-size:13px;text-align:center;font-family:inherit}
.limit-input:focus{outline:none;border-color:var(--primary)}

/* ---------- 弹窗 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(31,35,41,.5);display:flex;
  align-items:center;justify-content:center;z-index:100;padding:20px}
.modal{background:#fff;border-radius:12px;width:100%;max-width:520px;max-height:86vh;
  display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;
  justify-content:space-between;align-items:center}
.modal-head h3{font-size:16px;font-weight:600}
.modal-close{background:none;border:none;font-size:24px;cursor:pointer;color:var(--text3);line-height:1;padding:0 4px}
.modal-close:hover{color:var(--text)}
.modal-body{padding:22px;overflow-y:auto;flex:1}
.modal-foot{padding:14px 22px;border-top:1px solid var(--line);display:flex;
  justify-content:flex-end;gap:10px}

.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);background:#1f2329;color:#fff;
  padding:11px 22px;border-radius:8px;z-index:200;font-size:14px;box-shadow:0 8px 24px rgba(0,0,0,.2);
  max-width:80vw;text-align:center}
.toast.err{background:var(--red)}
.toast.ok{background:var(--green)}

.loading-mask{position:fixed;inset:0;background:rgba(255,255,255,.6);display:flex;
  align-items:center;justify-content:center;z-index:300}
.spinner{width:36px;height:36px;border:3px solid var(--line);border-top-color:var(--primary);
  border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.alert{padding:12px 16px;border-radius:var(--radius);font-size:13px;margin-bottom:16px;line-height:1.7}
.alert-warn{background:var(--orange-light);color:#8a4c05;border:1px solid #f7dcb4}
.alert-info{background:var(--primary-light);color:#1e46c9;border:1px solid #ccd8fb}
.alert-danger{background:var(--red-light);color:#a32320;border:1px solid #f3c9c7}

.bar-row{display:flex;align-items:center;gap:12px;margin-bottom:11px;font-size:13px}
.bar-name{width:110px;flex-shrink:0;color:var(--text2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar-track{flex:1;height:8px;background:#f0f1f3;border-radius:4px;overflow:hidden}
.bar-fill{height:100%;background:var(--primary);border-radius:4px}
.bar-val{width:52px;text-align:right;color:var(--text2);flex-shrink:0}

.codes-box{background:#f7f8fa;border:1px solid var(--line);border-radius:var(--radius);
  padding:12px;max-height:220px;overflow-y:auto;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:12px;line-height:1.9;word-break:break-all}

@media (max-width:900px){
  .sidebar{width:100%;position:static;flex-direction:row;flex-wrap:wrap;align-items:center;padding:8px}
  .layout{flex-direction:column}
  .main{margin-left:0}
  .brand{padding:8px 12px}
  .nav{display:flex;overflow-x:auto;padding:4px;flex:1 0 100%}
  .nav-item{white-space:nowrap;margin-bottom:0;margin-right:4px}
  .sidebar-foot{border:none;padding:8px 12px}
  .content{padding:16px 14px 50px}
  .topbar{padding:0 14px}
}