/* ========== 后台管理样式 ========== */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,"Microsoft YaHei",sans-serif;color:#2b2f38;background:#f4f6fa}
a{color:#1666f2;text-decoration:none}
.admin{display:flex;min-height:100vh}
/* 侧边栏 */
.sidebar{width:230px;flex:0 0 230px;background:#11203a;color:#cdd7e6;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.logo{display:flex;align-items:center;gap:12px;padding:20px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.logo-mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#1666f2,#2b86ff);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.logo b{display:block;color:#fff;font-size:15px}
.logo small{font-size:12px;color:#8aa0c2}
.nav{flex:1;padding:10px 0;overflow-y:auto}
.nav a{display:flex;align-items:center;gap:10px;padding:11px 20px;color:#b9c6da;font-size:14px;border-left:3px solid transparent}
.nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.nav a.active{background:rgba(22,102,242,.18);color:#fff;border-left-color:#2b86ff}
.ni{width:20px;text-align:center;font-size:15px;opacity:.9}
.side-foot{padding:14px 20px;border-top:1px solid rgba(255,255,255,.08)}
.logout{color:#ff8a80;font-size:13px}
/* 主区 */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:58px;background:#fff;border-bottom:1px solid #e7ecf3;display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:sticky;top:0;z-index:5}
.crumb a{font-size:13px;color:#5b6b85}
.me{display:flex;align-items:center;gap:8px;font-size:14px}
.avatar{width:30px;height:30px;border-radius:50%;background:#1666f2;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.content{padding:22px 26px;flex:1}
.admin-foot{text-align:center;color:#9aa6ba;font-size:12px;padding:14px}
/* 卡片与标题 */
.panel{background:#fff;border:1px solid #e7ecf3;border-radius:14px;padding:20px;margin-bottom:18px;box-shadow:0 2px 10px rgba(20,40,80,.03)}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:10px}
.page-head h2{margin:0;font-size:20px}
.page-head .sub{color:#8b93a1;font-size:13px}
/* 统计卡 */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid #e7ecf3;border-radius:14px;padding:18px}
.stat .n{font-size:28px;font-weight:800;color:#1666f2}
.stat .l{color:#7a869b;font-size:13px;margin-top:2px}
/* 表格 */
table.ad{width:100%;border-collapse:collapse;background:#fff;border:1px solid #e7ecf3;border-radius:14px;overflow:hidden}
table.ad th,table.ad td{padding:11px 13px;text-align:left;border-bottom:1px solid #eef1f6;font-size:13.5px}
table.ad th{background:#f7f9fc;color:#5b6b85;font-weight:700}
table.ad tr:hover td{background:#f9fbff}
table.ad .thumb{width:60px;height:46px;object-fit:cover;border-radius:6px}
.tag-s{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;margin:1px 2px}
.tag-s.on{background:#e6f7ee;color:#1a9d57}
.tag-s.off{background:#f0f2f6;color:#9aa6ba}
.badge-new{background:#fff1e6;color:#d4690a}
.badge-rec{background:#e8f0ff;color:#1666f2}
/* 表单 */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
.form-grid .full{grid-column:1/-1}
.frow{margin-bottom:14px}
.frow>label{display:block;font-weight:600;color:#33405a;margin-bottom:6px;font-size:13.5px}
.frow .hint{color:#9aa6ba;font-size:12px;margin-top:4px}
.input,.textarea,.select{width:100%;padding:10px 12px;border:1px solid #dfe4ec;border-radius:9px;font-size:14px;outline:none;background:#fff;font-family:inherit}
.textarea{min-height:120px;resize:vertical}
.input:focus,.textarea:focus,.select:focus{border-color:#1666f2;box-shadow:0 0 0 3px rgba(22,102,242,.12)}
/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:9px;border:1px solid #dfe4ec;background:#fff;color:#33405a;font-weight:700;font-size:14px;cursor:pointer;transition:.15s}
.btn:hover{opacity:.92;transform:translateY(-1px)}
.btn.primary{background:#1666f2;border-color:#1666f2;color:#fff}
.btn.danger{background:#fff;border-color:#f0c2bd;color:#e0392b}
.btn.sm{padding:5px 11px;font-size:13px}
.btn.ghost{background:transparent}
.row-actions a{margin-right:8px;font-size:13px}
/* 提示 */
.amsg{padding:12px 14px;border-radius:10px;margin-bottom:16px}
.amsg.ok{background:#e6f7ee;color:#1a9d57}
.amsg.err{background:#fdecea;color:#c0392b}
.alert-warn{background:#fff7e6;color:#b06a00;border:1px solid #ffe2a8;padding:10px 14px;border-radius:10px;margin-bottom:14px}
/* 预览图 */
.imgprev{max-width:160px;border-radius:8px;border:1px solid #e7ecf3;margin-top:6px}
.uploader{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.uploader .ph{width:120px;height:90px;border:1px dashed #c7d2e0;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#9aa6ba;font-size:12px;background:#fafcff}
/* 登录页 */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0b47b8,#1666f2 55%,#2b86ff)}
.login-box{width:380px;background:#fff;border-radius:16px;padding:34px 30px;box-shadow:0 24px 60px rgba(0,0,0,.22)}
.login-box h1{margin:0 0 4px;font-size:22px;text-align:center}
.login-box .ls{text-align:center;color:#8b93a1;font-size:13px;margin-bottom:22px}
.login-box .frow>label{font-size:13px}
.login-box .btn{width:100%;justify-content:center;margin-top:6px}
.err-line{background:#fdecea;color:#c0392b;padding:9px 12px;border-radius:9px;font-size:13px;margin-bottom:14px}
/* 响应式 */
.tb-left{display:flex;align-items:center;gap:10px;min-width:0}
.menu-toggle{
  display:none;align-items:center;justify-content:center;width:38px;height:38px;flex:none;padding:0;
  border:1px solid #e7ecf3;border-radius:9px;background:#fff;color:#33405a;font-size:18px;line-height:1;cursor:pointer;
}
.menu-toggle:hover{background:#f4f7fc}
.sidebar-mask{position:fixed;inset:0;background:rgba(10,16,28,.5);z-index:49;opacity:0;visibility:hidden;transition:.25s}
.sidebar-mask.show{opacity:1;visibility:visible}
body.sidebar-open{overflow:hidden}

@media (max-width:900px){
  .sidebar{position:fixed;left:0;top:0;z-index:50;transform:translateX(-100%);transition:transform .25s;box-shadow:0 0 40px rgba(0,0,0,.3)}
  .sidebar.open{transform:none}
  .menu-toggle{display:inline-flex}
  .content{padding:14px}
  .form-grid{grid-template-columns:1fr}
  .page-head h2{font-size:18px}
  table.ad{display:block;overflow-x:auto;white-space:nowrap}
}
@media (min-width:901px){.menu-toggle{display:none}.sidebar-mask{display:none}}