/* 后台公共样式 - 浅色统一风格 */
*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;}
body{background:#f4f6fa;color:#222;font-size:14px;}

/* 登录页 */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#fe2c55,#ff5b8a);padding:20px;}
.login-card{width:100%;max-width:380px;background:#fff;border-radius:14px;padding:32px;box-shadow:0 24px 60px rgba(0,0,0,.18);}
.login-card h1{color:#fe2c55;margin:0 0 4px;font-size:22px;}
.login-card .sub{color:#888;margin:0 0 22px;font-size:13px;}
.login-card label{display:block;margin:12px 0 6px;font-size:13px;color:#555;}
.login-card input{width:100%;padding:11px 12px;background:#fafbfc;border:1px solid #e3e6ec;color:#222;border-radius:8px;font-size:14px;outline:none;}
.login-card input:focus{border-color:#fe2c55;background:#fff;}
.login-card button{width:100%;margin-top:20px;padding:12px;background:#fe2c55;border:none;color:#fff;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;}
.login-card button:hover{background:#ff4670;}
.login-card .err{padding:10px 12px;border-radius:8px;background:#fff1f0;color:#cf1322;border:1px solid #ffa39e;font-size:13px;margin-bottom:8px;}

/* 布局 */
.layout{display:flex;min-height:100vh;background:#f4f6fa;}

/* 侧边栏 - 白色统一 */
.sidebar{width:220px;background:#ffffff;color:#222;padding:18px 0;position:sticky;top:0;height:100vh;overflow-y:auto;border-right:1px solid #ebeef4;}
.brand{padding:0 20px 18px;border-bottom:1px solid #ebeef4;margin-bottom:12px;}
.brand .logo{color:#fe2c55;font-size:18px;font-weight:700;letter-spacing:1px;}
.brand .ver{color:#aab;font-size:11px;margin-top:2px;}
.nav a{display:flex;align-items:center;padding:11px 20px;color:#4a5160;text-decoration:none;font-size:14px;border-left:3px solid transparent;transition:all .15s ease;}
.nav a:hover{background:#f7f9fc;color:#fe2c55;}
.nav a.active{background:linear-gradient(90deg,rgba(254,44,85,.08),transparent);color:#fe2c55;border-left-color:#fe2c55;font-weight:600;}

.main{flex:1;display:flex;flex-direction:column;min-width:0;background:#f4f6fa;}
.topbar{background:#fff;border-bottom:1px solid #ebeef4;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;}
.topbar h2{font-size:17px;font-weight:600;}
.topbar .user{color:#666;font-size:13px;display:flex;gap:14px;align-items:center;}
.topbar .user a{color:#fe2c55;text-decoration:none;}
.content{padding:22px 24px;flex:1;}

/* 卡片 */
.card{background:#fff;border-radius:10px;padding:18px;box-shadow:0 1px 2px rgba(0,0,0,.04);margin-bottom:16px;border:1px solid #ebeef4;}
.card .hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.card .hd h3{font-size:15px;font-weight:600;}

/* 数据卡片 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px;}
.stat{background:#fff;border-radius:10px;padding:18px;display:flex;align-items:center;gap:14px;box-shadow:0 1px 2px rgba(0,0,0,.04);border:1px solid #ebeef4;}
.stat .ic{width:46px;height:46px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;}
.stat .num{font-size:22px;font-weight:700;}
.stat .lbl{color:#888;font-size:12px;margin-top:2px;}
.ic-red{background:linear-gradient(135deg,#fe2c55,#ff7a8a);}
.ic-blue{background:linear-gradient(135deg,#3a8dff,#6cb1ff);}
.ic-amber{background:linear-gradient(135deg,#ff5b8a,#ff8eb3);}
.ic-green{background:linear-gradient(135deg,#16c099,#5fd6b6);}

/* 表单 */
.form-row{display:grid;grid-template-columns:160px 1fr;gap:14px;align-items:center;margin-bottom:14px;}
.form-row label{color:#555;font-size:13px;}
.form-row input[type=text],.form-row input[type=password],.form-row input[type=number],.form-row textarea,.form-row select{width:100%;padding:9px 12px;border:1px solid #dcdfe4;border-radius:8px;font-size:14px;outline:none;background:#fff;}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{border-color:#fe2c55;}
.form-row textarea{min-height:90px;resize:vertical;font-family:inherit;}
.form-row .hint{color:#999;font-size:12px;margin-top:4px;}
.form-row .img-preview{width:120px;height:120px;border-radius:8px;background:#f4f5f7;border:1px dashed #dcdfe4;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.form-row .img-preview img{width:100%;height:100%;object-fit:cover;}
.form-actions{padding-top:10px;display:flex;gap:10px;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:6px;border:none;font-size:13px;cursor:pointer;text-decoration:none;}
.btn-primary{background:#fe2c55;color:#fff;}
.btn-primary:hover{background:#ff4670;}
.btn-default{background:#fff;border:1px solid #dcdfe4;color:#333;}
.btn-default:hover{border-color:#fe2c55;color:#fe2c55;}
.btn-danger{background:#fa3838;color:#fff;}
.btn-danger:hover{background:#ff5252;}
.btn-sm{padding:4px 10px;font-size:12px;}

/* 表格 */
.table{width:100%;background:#fff;border-collapse:collapse;border-radius:10px;overflow:hidden;}
.table th{background:#fafbfc;text-align:left;padding:12px 14px;font-size:12px;color:#666;font-weight:600;border-bottom:1px solid #ebeef4;}
.table td{padding:12px 14px;border-bottom:1px solid #f1f2f5;font-size:13px;vertical-align:middle;}
.table tr:last-child td{border-bottom:none;}
.table tr:hover td{background:#fafbfc;}
.table .th-cover{width:60px;}
.table .th-cover img{width:50px;height:70px;object-fit:cover;border-radius:6px;background:#eee;}
.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;}
.badge-on{background:rgba(82,196,26,.12);color:#389e0d;}
.badge-off{background:rgba(140,140,140,.12);color:#888;}
.badge-paid{background:rgba(82,196,26,.12);color:#389e0d;}
.badge-pending{background:rgba(255,91,138,.16);color:#d23b7a;}
.badge-blue{background:rgba(64,159,255,.12);color:#1d4ed8;}
.badge-green{background:rgba(82,196,26,.12);color:#16a34a;}
.badge-red{background:rgba(255,77,79,.12);color:#dc2626;}
.badge-gray{background:rgba(140,140,140,.16);color:#666;}

/* 提示 */
.flash{padding:10px 14px;border-radius:8px;margin-bottom:14px;font-size:13px;}
.flash.ok{background:#f6ffed;color:#389e0d;border:1px solid #b7eb8f;}
.flash.err{background:#fff1f0;color:#cf1322;border:1px solid #ffa39e;}

/* 系统信息（概览页）大气体检 */
.sysinfo{background:linear-gradient(135deg,#fff,#fff5f7);border:1px solid #ffe1e6;border-radius:14px;padding:22px;margin-bottom:18px;position:relative;overflow:hidden;}
.sysinfo::before{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;background:radial-gradient(circle,rgba(254,44,85,.10),transparent 70%);border-radius:50%;}
.sysinfo::after{content:"";position:absolute;left:-30px;bottom:-30px;width:140px;height:140px;background:radial-gradient(circle,rgba(255,91,138,.10),transparent 70%);border-radius:50%;}
.sysinfo .hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;position:relative;z-index:1;}
.sysinfo .hd h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px;color:#222;}
.sysinfo .hd h3::before{content:"";width:4px;height:18px;background:linear-gradient(180deg,#fe2c55,#ff5b8a);border-radius:2px;}
.sysinfo .hd .tag{font-size:11px;padding:3px 10px;border-radius:10px;background:rgba(254,44,85,.08);color:#fe2c55;font-weight:600;}
.sysinfo .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;position:relative;z-index:1;}
.sysinfo .item{background:#fff;border:1px solid #f0f2f5;border-radius:10px;padding:14px 16px;transition:all .2s ease;}
.sysinfo .item:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(254,44,85,.08);border-color:#ffd1d8;}
.sysinfo .item .lbl{color:#999;font-size:12px;margin-bottom:6px;display:flex;align-items:center;gap:5px;}
.sysinfo .item .lbl .dot{width:6px;height:6px;border-radius:50%;background:#fe2c55;}
.sysinfo .item .val{font-size:18px;font-weight:700;color:#222;}
.sysinfo .item .val small{font-size:12px;color:#999;font-weight:400;margin-left:4px;}

/* 套餐卡片网格 - 防重叠 */
.plan-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;align-items:start;}
.plan-item{border:2px solid #ffd1e0;border-radius:12px;padding:16px;background:linear-gradient(135deg,#fff5f7,#fff);position:relative;min-width:0;overflow:hidden;}
.plan-item h4{font-size:16px;margin:0 0 6px;display:flex;align-items:center;justify-content:space-between;gap:6px;flex-wrap:wrap;}
.plan-item .price{color:#fe2c55;font-size:22px;font-weight:700;margin:6px 0;word-break:break-all;}
.plan-item .price del{color:#999;font-size:13px;margin-left:6px;font-weight:400;}
.plan-item .days{color:#888;font-size:12px;}
.plan-item .desc{color:#666;font-size:12px;margin:8px 0 12px;line-height:1.5;min-height:32px;word-break:break-all;overflow-wrap:break-word;}
.plan-item .ops{display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
.plan-item .ops form{margin:0;padding:0;display:inline-block;}

/* 响应式 */
@media (max-width: 900px){
    .stats{grid-template-columns:repeat(2,1fr);}
    .plan-grid{grid-template-columns:repeat(2,1fr);}
    .form-row{grid-template-columns:1fr;gap:6px;}
    .sysinfo .grid{grid-template-columns:repeat(2,1fr);}
    .content{padding:14px;}
    .topbar{padding:12px 14px;}
}
@media (max-width: 720px){
    /* 汉堡菜单按钮 */
    .menu-btn{
        display:inline-flex;align-items:center;justify-content:center;
        width:36px;height:36px;margin-right:10px;
        background:#f5f6fa;border:1px solid #ebeef4;border-radius:8px;
        font-size:22px;line-height:1;color:#444;cursor:pointer;flex-shrink:0;
    }
    .menu-btn:active{background:#fe2c55;color:#fff;border-color:#fe2c55;}

    /* 侧边栏变抽屉 */
    .sidebar{position:fixed;left:-260px;top:0;bottom:0;width:260px;height:100vh;z-index:100;transition:left .25s ease;box-shadow:4px 0 18px rgba(0,0,0,.1);}
    .sidebar.open{left:0;}
    .sidebar-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:99;display:none;}
    .sidebar-mask.show{display:block;}

    /* 顶部条 */
    .topbar{padding:10px 12px;gap:8px;}
    .topbar h2{font-size:15px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
    .topbar .user{font-size:12px;gap:8px;flex-shrink:0;}
    .topbar .user span{display:none;}

    /* 内容区 */
    .content{padding:12px;}
    .layout{flex-direction:column;}

    .stats{grid-template-columns:1fr 1fr;gap:8px;}
    .stat{padding:14px;gap:10px;}
    .stat .ic{width:38px;height:38px;font-size:18px;}
    .stat .num{font-size:18px;}
    .plan-grid{grid-template-columns:1fr;gap:10px;}
    .form-row{grid-template-columns:1fr;gap:6px;}
    .table{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;}
    .sysinfo .grid{grid-template-columns:1fr 1fr;gap:8px;}
    .sysinfo{padding:14px;}

    /* 卡片 */
    .card{padding:14px;}
    .card .hd{flex-wrap:wrap;gap:8px;}

    /* 按钮变小 */
    .btn{padding:7px 12px;font-size:12px;}
    .btn-sm{padding:4px 8px;font-size:11px;}

    /* 表单横向滚动 */
    .form-row img{max-width:100%;}
}
@media (min-width: 721px){
    .menu-btn{display:none;}
    .sidebar-mask{display:none !important;}
}
@media (max-width: 420px){
    .stats{grid-template-columns:1fr;}
    .sysinfo .grid{grid-template-columns:1fr;}
    .topbar .user a{padding:0 4px;}
}