/* ============ 全局变量 ============ */
:root{
  --bg:#0f172a;
  --sidebar:#111827;
  --sidebar-hover:#1f2937;
  --sidebar-active:#2563eb;
  --card:#ffffff;
  --text:#1e293b;
  --text-light:#64748b;
  --border:#e2e8f0;
  --primary:#2563eb;
  --primary-hover:#1d4ed8;
  --success:#16a34a;
  --warn:#d97706;
  --danger:#dc2626;
  --bg-page:#f1f5f9;
  --radius:10px;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg-page);color:var(--text);font-size:14px;line-height:1.6}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-hover)}

/* ============ 登录页 ============ */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1e3a8a 0%,#0f172a 100%);padding:20px}
.login-card{background:#fff;width:100%;max-width:400px;border-radius:16px;padding:40px 36px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-card .logo{text-align:center;margin-bottom:24px}
.login-card .logo h1{font-size:22px;color:var(--text);margin-top:12px}
.login-card .logo .icon{width:56px;height:56px;margin:0 auto;background:linear-gradient(135deg,#2563eb,#1e40af);border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px}
.login-card .tip{text-align:center;color:var(--text-light);font-size:13px;margin-bottom:24px}

/* ============ 表单 ============ */
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:6px;font-weight:600;color:var(--text);font-size:13px}
.form-group label .req{color:var(--danger)}
.form-control{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;transition:.2s;background:#fff;color:var(--text)}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
textarea.form-control{min-height:90px;resize:vertical;font-family:inherit}
select.form-control{cursor:pointer}
.form-hint{font-size:12px;color:var(--text-light);margin-top:4px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-actions{display:flex;gap:10px;margin-top:24px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:.15s;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-warn{background:var(--warn);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#b91c1c;color:#fff}
.btn-outline{background:#fff;color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{background:#f8fafc;border-color:#cbd5e1}
.btn-sm{padding:5px 11px;font-size:12px;border-radius:6px}
.btn-block{width:100%}

/* ============ 布局 ============ */
.layout{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--sidebar);color:#cbd5e1;position:fixed;top:0;bottom:0;left:0;overflow-y:auto;z-index:100}
.sidebar .brand{padding:22px 20px;font-size:17px;font-weight:700;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:10px}
.sidebar .brand .dot{width:32px;height:32px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px}
.nav-section{padding:14px 0 4px}
.nav-section .nav-title{padding:6px 20px;font-size:11px;text-transform:uppercase;color:#64748b;letter-spacing:.5px}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 20px;color:#cbd5e1;transition:.15s;border-left:3px solid transparent}
.nav-item:hover{background:var(--sidebar-hover);color:#fff}
.nav-item.active{background:rgba(37,99,235,.15);color:#fff;border-left-color:var(--primary)}
.nav-item .ico{font-size:16px;width:18px;text-align:center}

.main{flex:1;margin-left:230px;display:flex;flex-direction:column;min-height:100vh}
.topbar{background:#fff;height:60px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;box-shadow:var(--shadow);position:sticky;top:0;z-index:50}
.topbar .page-title{font-size:18px;font-weight:700}
.topbar .user-area{display:flex;align-items:center;gap:14px}
.topbar .user-area .avatar{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.content{padding:24px;flex:1}

/* ============ 卡片/统计 ============ */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:20px}
.card .card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.card .card-head h3{font-size:16px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;margin-bottom:24px}
.stat-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.stat-card .stat-label{color:var(--text-light);font-size:13px;margin-bottom:8px}
.stat-card .stat-value{font-size:30px;font-weight:800;line-height:1}
.stat-card .stat-ico{position:absolute;right:18px;top:18px;width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px}
.stat-card.ok{border-left:4px solid var(--success)}
.stat-card.ok .stat-ico{background:#dcfce7;color:var(--success)}
.stat-card.bad{border-left:4px solid var(--danger)}
.stat-card.bad .stat-ico{background:#fee2e2;color:var(--danger)}
.stat-card.warn{border-left:4px solid var(--warn)}
.stat-card.warn .stat-ico{background:#fef3c7;color:var(--warn)}
.stat-card.info{border-left:4px solid var(--primary)}
.stat-card.info .stat-ico{background:#dbeafe;color:var(--primary)}

/* ============ 表格 ============ */
.table-wrap{overflow-x:auto}
table.data{width:100%;border-collapse:collapse}
table.data th{background:#f8fafc;text-align:left;padding:12px 14px;font-size:13px;color:var(--text-light);font-weight:600;border-bottom:2px solid var(--border);white-space:nowrap}
table.data td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:middle}
table.data tr:hover td{background:#f8fafc}
table.data .actions{display:flex;gap:6px;flex-wrap:wrap}

/* ============ 徽章/标签 ============ */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600}
.badge.ok{background:#dcfce7;color:#15803d}
.badge.bad{background:#fee2e2;color:#b91c1c}
.badge.warn{background:#fef3c7;color:#b45309}
.badge.muted{background:#f1f5f9;color:#64748b}
.badge.info{background:#dbeafe;color:#1d4ed8}
.badge.critical{background:#fecaca;color:#991b1b}

.dot-status{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px}
.dot-status.up{background:var(--success)}
.dot-status.down{background:var(--danger)}

/* ============ 分页 ============ */
.pagination{display:flex;align-items:center;gap:6px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.page-btn{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:34px;padding:0 10px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--text);font-size:13px;cursor:pointer;text-decoration:none}
.page-btn:hover{border-color:var(--primary);color:var(--primary)}
.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.page-btn.disabled{color:#cbd5e1;background:#f8fafc;cursor:not-allowed}
.page-info{margin-left:12px;color:var(--text-light);font-size:13px}

/* ============ 提示框 ============ */
.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px}
.alert-success{background:#dcfce7;color:#15803d;border:1px solid #bbf7d0}
.alert-error{background:#fee2e2;color:#b91c1c;border:1px solid #fecaca}
.alert-info{background:#dbeafe;color:#1d4ed8;border:1px solid #bfdbfe}

/* ============ 工具类 ============ */
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.text-muted{color:var(--text-light)}
.text-danger{color:var(--danger)}
.text-success{color:var(--success)}
.text-center{text-align:center}
.mono{font-family:"SF Mono",Consolas,"Courier New",monospace;font-size:13px}
.empty{text-align:center;padding:50px 20px;color:var(--text-light)}
.empty .ico{font-size:42px;margin-bottom:12px;opacity:.5}
.filter-bar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.filter-bar .form-control{width:auto;min-width:160px}
.switch{position:relative;display:inline-block;width:42px;height:22px}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;cursor:pointer;inset:0;background:#cbd5e1;transition:.3s;border-radius:22px}
.slider:before{content:"";position:absolute;height:16px;width:16px;left:3px;bottom:3px;background:#fff;transition:.3s;border-radius:50%}
input:checked+.slider{background:var(--success)}
input:checked+.slider:before{transform:translateX(20px)}
.kv{display:grid;grid-template-columns:140px 1fr;gap:8px 16px;font-size:13px}
.kv dt{color:var(--text-light)}
.api-block{background:#0f172a;color:#a5b4fc;padding:14px 16px;border-radius:8px;font-family:Consolas,monospace;font-size:13px;overflow-x:auto;white-space:pre-wrap;word-break:break-all}
@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .main{margin-left:0}
  .form-row{grid-template-columns:1fr}
}