:root{
  --bg:#0e1117; --panel:#161b22; --panel2:#1c2230; --line:#2a3240;
  --txt:#e6edf3; --muted:#8b949e; --accent:#4c8dff; --accent-d:#2f6fe0;
  --ok:#3fb950; --warn:#d29922; --danger:#f85149;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{background:var(--bg);color:var(--txt);font:14px/1.6 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#0006;padding:1px 5px;border-radius:4px;font-size:12px}

/* ---------- 布局 ---------- */
.shell{display:flex;min-height:100vh}
.sidebar{width:216px;flex:0 0 216px;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:20px 18px;font-weight:600;font-size:15px;border-bottom:1px solid var(--line)}
.brand-mark{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:7px;background:var(--accent);color:#fff;font-weight:800;font-size:12px;letter-spacing:.5px}
.nav{padding:12px 10px;flex:1}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;margin:3px 0;border-radius:8px;color:var(--muted);font-size:14px}
.nav-item:hover{background:var(--panel2);color:var(--txt);text-decoration:none}
.nav-item.active{background:rgba(76,141,255,.14);color:#9dc0ff;font-weight:600}
.nav-ico{width:18px;text-align:center;font-size:15px;opacity:.9}
.nav-item.logout{color:#e08b8b}
.side-foot{padding:12px 10px 16px;border-top:1px solid var(--line)}
.side-user{color:var(--muted);font-size:12px;padding:0 12px 8px;overflow:hidden;text-overflow:ellipsis}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 26px;border-bottom:1px solid var(--line);background:var(--panel)}
.topbar-title{font-size:16px;font-weight:600}
.topbar-meta{display:flex;align-items:center;gap:10px;min-width:0}
.content{padding:24px 26px 48px;max-width:1400px;width:100%}

/* ---------- 通用组件 ---------- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:18px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:-2px 0 16px}
.card-title{font-size:15px;font-weight:600;margin:0}
.muted{color:var(--muted)}
.small{font-size:12px}
.mono{font-family:ui-monospace,Consolas,"Courier New",monospace;font-size:12px}
.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}
.nowrap{white-space:nowrap}

.alert{padding:11px 14px;border-radius:8px;margin-bottom:16px;border:1px solid;font-size:13px}
.alert-ok{background:rgba(63,185,80,.10);border-color:rgba(63,185,80,.35);color:#8ee19b}
.alert-warn{background:rgba(210,153,34,.10);border-color:rgba(210,153,34,.35);color:#e8c06a}
.alert-err{background:rgba(248,81,73,.10);border-color:rgba(248,81,73,.35);color:#ff9c96}
.alert b{color:inherit}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:7px 13px;border-radius:7px;border:1px solid var(--line);background:var(--panel2);color:var(--txt);font-size:13px;cursor:pointer;line-height:1.4;white-space:nowrap}
.btn:hover{background:#25304a;text-decoration:none}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.btn-primary:hover{background:var(--accent-d);border-color:var(--accent-d)}
.btn-danger{color:#ff9c96;border-color:rgba(248,81,73,.4);background:rgba(248,81,73,.08)}
.btn-danger:hover{background:rgba(248,81,73,.18)}
.btn-sm{padding:4px 9px;font-size:12px}
.btn-group{display:flex;gap:8px;flex-wrap:wrap}

.chip{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;border:1px solid var(--line);background:var(--panel2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip-ok{color:#8ee19b;border-color:rgba(63,185,80,.35)}
.chip-warn{color:#e8c06a;border-color:rgba(210,153,34,.35)}
.badge{display:inline-block;padding:2px 8px;border-radius:5px;font-size:12px;line-height:1.7}
.badge-on{background:rgba(63,185,80,.14);color:#8ee19b}
.badge-off{background:rgba(139,148,158,.14);color:var(--muted)}
.badge-manual{background:rgba(76,141,255,.14);color:#9dc0ff}
.badge-qr{background:rgba(163,113,247,.16);color:#c9a6ff}
.badge-bad{background:rgba(248,81,73,.14);color:#ff9c96}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
label.lb{font-size:13px;color:var(--muted);font-weight:600}
label.lb .req{color:var(--danger)}
input[type=text],input[type=password],input[type=url],input[type=date],input[type=number],select,textarea{
  width:100%;padding:8px 11px;border:1px solid var(--line);border-radius:7px;background:#0f131a;color:var(--txt);font:inherit;font-size:13px;outline:none
}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(76,141,255,.14)}
textarea{resize:vertical;min-height:72px}
input[readonly]{background:#0b0e13;color:var(--muted)}
.hint{font-size:12px;color:var(--muted);line-height:1.5}
.field-error{color:#ff9c96;font-size:12px}

.filter{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-bottom:16px}
.filter .field{min-width:140px;flex:0 1 200px;gap:4px}
.filter .field.wide{flex:0 1 280px}
.filter .spacer{flex:1}
.filter label.lb{font-size:12px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{background:var(--panel2);color:var(--muted);font-weight:600;white-space:nowrap;font-size:12px}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(255,255,255,.025)}
td.actions{white-space:nowrap}
.empty{text-align:center;padding:38px 16px;color:var(--muted)}

/* ---------- 分页 ---------- */
.pager{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px;font-size:13px;color:var(--muted)}
.pager-info b{color:var(--txt)}
.pager-size select{width:auto;padding:5px 8px;font-size:12px}
.pager-pages{display:flex;gap:4px;align-items:center;flex-wrap:wrap;margin-left:auto}
.pg{display:inline-block;min-width:30px;text-align:center;padding:5px 8px;border:1px solid var(--line);border-radius:6px;color:var(--txt);background:var(--panel2);font-size:12px}
.pg:hover{text-decoration:none;border-color:var(--accent)}
.pg.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.pg.disabled{opacity:.4;pointer-events:none}
.pg-gap{color:var(--muted)}

/* ---------- 统计卡片 ---------- */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:18px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.kpi .k-label{color:var(--muted);font-size:12px}
.kpi .k-value{font-size:26px;font-weight:700;margin-top:6px;letter-spacing:.5px}
.kpi .k-sub{font-size:12px;color:var(--muted);margin-top:4px}

/* ---------- 二维码 / 上传 ---------- */
.qr-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}
.qr-box{background:#fff;border-radius:10px;padding:14px;display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box img{width:100%;max-width:280px;height:auto;image-rendering:pixelated;display:block}
.qr-url{font-family:ui-monospace,Consolas,monospace;font-size:11px;color:#333;word-break:break-all;text-align:center;line-height:1.5;background:#f1f3f5;border-radius:6px;padding:8px;width:100%}
.dropzone{border:1.5px dashed var(--line);border-radius:10px;padding:22px;text-align:center;background:var(--panel2);cursor:pointer;transition:.15s}
.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:rgba(76,141,255,.08)}
.dropzone .dz-title{font-weight:600;font-size:13px;margin-bottom:4px}
.dropzone input[type=file]{display:none}
#qr_preview{max-width:180px;max-height:180px;margin:12px auto 0;display:none;border-radius:6px;border:1px solid var(--line)}
.decode-result{margin-top:12px;font-size:13px;word-break:break-all}
.decode-result.ok{color:#8ee19b}
.decode-result.fail{color:#ff9c96}

/* ---------- 登录页 ---------- */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(900px 500px at 50% -10%,rgba(76,141,255,.13),transparent 70%)}
.login-card{width:100%;max-width:390px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:30px 28px;box-shadow:0 18px 50px rgba(0,0,0,.4)}
.login-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:6px}
.login-sub{color:var(--muted);font-size:13px;margin-bottom:24px}
.login-card .field{margin-bottom:16px}
.login-card .btn{width:100%;padding:10px;margin-top:6px}
.login-foot{margin-top:18px;color:var(--muted);font-size:12px;text-align:center}

/* ---------- 跳转异常页 ---------- */
.gopage{min-height:100vh;display:grid;place-items:center;padding:24px}
.gocard{max-width:460px;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:34px 28px}
.gocard h1{font-size:19px;margin:0 0 10px}
.gocard p{color:var(--muted);margin:0}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .sidebar{width:60px;flex-basis:60px}
  .brand span:not(.brand-mark),.nav-item span:not(.nav-ico),.side-user{display:none}
  .brand{justify-content:center;padding:16px 0}
  .nav-item{justify-content:center;padding:10px 0}
  .qr-layout,.form-grid{grid-template-columns:1fr}
  .topbar{flex-direction:column;align-items:flex-start}
  .content{padding:18px 14px 40px}
}