/* ============================================================
   DNS 管理平台 · 暗色科技风
   ============================================================ */
:root{
  --bg:#06090f;
  --bg-2:#0b1018;
  --panel:#0e1523;
  --panel-2:#131c30;
  --line:rgba(80,120,200,.14);
  --line-2:rgba(255,255,255,.06);
  --txt:#e2e8f5;
  --txt-2:#8b97b0;
  --txt-3:#5a6580;
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --purple:#8b5cf6;
  --green:#34d399;
  --amber:#fbbf24;
  --red:#f87171;
  --grad:linear-gradient(135deg,#22d3ee 0%,#3b82f6 50%,#8b5cf6 100%);
  --shadow:0 0 30px rgba(34,211,238,.12);
  --radius:10px;
  --mono:"JetBrains Mono","Consolas","SF Mono",Menlo,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{font-size:15px;scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(900px 500px at 85% -10%,rgba(59,130,246,.12),transparent 60%),radial-gradient(700px 500px at 0 20%,rgba(139,92,246,.08),transparent 60%),var(--bg)}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
.mono{font-family:var(--mono)}

/* ---------- 加载屏 ---------- */
.loading-screen{position:fixed;inset:0;display:grid;place-items:center;background:var(--bg);z-index:9999}
.loader{width:44px;height:44px;border:3px solid var(--line);border-top-color:var(--cyan);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}
.loading-screen p{color:var(--txt-3);font-size:14px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:240px;flex-shrink:0;background:var(--bg-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:50;
  transition:.3s;
}
.sidebar-brand{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}
.sidebar-brand .logo{
  width:36px;height:36px;border-radius:8px;display:grid;place-items:center;
  background:var(--grad);color:var(--bg);font-weight:900;font-size:15px;box-shadow:var(--shadow);flex-shrink:0;
}
.sidebar-brand b{font-size:17px;font-weight:800;display:block}
.sidebar-brand span{font-size:11px;color:var(--txt-3);letter-spacing:2px}
.nav-menu{padding:14px 0;flex:1;overflow-y:auto}
.nav-menu li{margin:2px 12px}
.nav-menu a{
  display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:8px;
  color:var(--txt-2);font-size:14px;transition:.2s;cursor:pointer;
}
.nav-menu a:hover{background:rgba(34,211,238,.06);color:var(--cyan)}
.nav-menu a.active{background:rgba(34,211,238,.1);color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(34,211,238,.2)}
.nav-menu a .icon{font-size:18px;width:20px;text-align:center}
.nav-menu .group-title{padding:18px 16px 6px;font-size:11px;color:var(--txt-3);letter-spacing:3px;text-transform:uppercase}
.sidebar-foot{padding:14px 16px;border-top:1px solid var(--line);font-size:12px;color:var(--txt-3)}
.sidebar-foot .user-info{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.sidebar-foot .avatar{width:32px;height:32px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:var(--bg);font-weight:800;font-size:13px;flex-shrink:0}
.sidebar-foot b{display:block;font-size:13px;color:var(--txt)}
.logout-btn{background:none;border:0;color:var(--txt-3);font-size:12px;cursor:pointer;padding:4px 0;font-family:inherit}
.logout-btn:hover{color:var(--red)}

.main{flex:1;margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
.topbar{
  height:60px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;
  background:rgba(11,16,24,.8);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:40;
}
.topbar h1{font-size:20px;font-weight:700}
.topbar .actions{display:flex;align-items:center;gap:14px}
.topbar .icon-btn{
  width:38px;height:38px;border-radius:8px;border:1px solid var(--line);background:var(--panel);
  color:var(--txt-2);cursor:pointer;font-size:17px;transition:.2s;
}
.topbar .icon-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.content{padding:28px;flex:1;max-width:1400px;width:100%}

/* ---------- 移动端侧栏切换 ---------- */
.menu-toggle{display:none;background:none;border:0;color:var(--txt);font-size:24px;cursor:pointer}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:49}

/* ---------- 卡片 ---------- */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;margin-bottom:22px;
}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.card-head h2{font-size:17px;font-weight:700}
.card-head .sub{font-size:13px;color:var(--txt-3);margin-top:2px}

/* ---------- 统计卡片 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:24px}
.stat-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  position:relative;overflow:hidden;transition:.3s;
}
.stat-card:hover{border-color:rgba(34,211,238,.3);transform:translateY(-3px)}
.stat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:.6}
.stat-card .stat-icon{font-size:24px;margin-bottom:14px}
.stat-card .stat-val{font-size:32px;font-weight:800;font-family:var(--mono)}
.stat-card .stat-val .unit{font-size:15px;color:var(--txt-2);margin-left:4px}
.stat-card .stat-label{font-size:13px;color:var(--txt-2);margin-top:4px}
.stat-card.green .stat-icon{color:var(--green)}
.stat-card.cyan .stat-icon{color:var(--cyan)}
.stat-card.amber .stat-icon{color:var(--amber)}
.stat-card.purple .stat-icon{color:var(--purple)}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{
  text-align:left;padding:12px 14px;font-size:12px;color:var(--txt-3);
  border-bottom:1px solid var(--line);letter-spacing:1px;text-transform:uppercase;
}
tbody td{padding:13px 14px;border-bottom:1px solid var(--line-2)}
tbody tr{transition:.15s}
tbody tr:hover{background:rgba(34,211,238,.03)}
.tag{
  display:inline-block;padding:3px 10px;border-radius:5px;font-size:11.5px;font-weight:600;letter-spacing:.5px;
}
.tag.a{background:rgba(52,211,153,.12);color:var(--green);border:1px solid rgba(52,211,153,.25)}
.tag.cname{background:rgba(139,92,246,.12);color:var(--purple);border:1px solid rgba(139,92,246,.25)}
.tag.mx{background:rgba(251,191,36,.12);color:var(--amber);border:1px solid rgba(251,191,36,.25)}
.tag.txt{background:rgba(139,151,176,.12);color:var(--txt-2);border:1px solid var(--line)}
.tag.ns{background:rgba(59,130,246,.12);color:var(--blue);border:1px solid rgba(59,130,246,.25)}
.tag.aaaa{background:rgba(248,113,113,.1);color:var(--red);border:1px solid rgba(248,113,113,.2)}
.tag.srv{background:rgba(34,211,238,.1);color:var(--cyan);border:1px solid rgba(34,211,238,.2)}
.tag.caa{background:rgba(34,211,238,.08);color:var(--cyan);border:1px solid rgba(34,211,238,.15)}
.tag.synced{background:rgba(52,211,153,.12);color:var(--green);border:1px solid rgba(52,211,153,.25)}
.tag.local{background:rgba(139,151,176,.1);color:var(--txt-3);border:1px solid var(--line)}
.tag.cloudflare{background:rgba(243,136,46,.1);color:#f3802e;border:1px solid rgba(243,136,46,.2)}
.tag.aliyun{background:rgba(255,102,0,.1);color:#ff6600;border:1px solid rgba(255,102,0,.2)}
.tag.dnspod{background:rgba(45,140,255,.1);color:#2d8cff;border:1px solid rgba(45,140,255,.2)}
.tag.huawei{background:rgba(200,0,0,.08);color:#c80000;border:1px solid rgba(200,0,0,.15)}
.tag.juming{background:rgba(34,197,94,.1);color:#22c55e;border:1px solid rgba(34,197,94,.2)}
.tag.west{background:rgba(234,88,12,.08);color:#ea580c;border:1px solid rgba(234,88,12,.15)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:7px;cursor:pointer;
  padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;border:1px solid transparent;
  transition:.2s;font-family:inherit;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:var(--bg);box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 36px rgba(34,211,238,.3)}
.btn-ghost{background:var(--panel-2);border-color:var(--line);color:var(--txt-2)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-danger{background:rgba(248,113,113,.1);border-color:rgba(248,113,113,.3);color:var(--red)}
.btn-danger:hover{background:rgba(248,113,113,.2)}
.btn-sm{padding:6px 14px;font-size:13px;border-radius:6px}
.btn-block{width:100%;justify-content:center}

/* ---------- 表单 ---------- */
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;color:var(--txt-2);margin-bottom:7px;font-weight:600}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:11px 14px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:8px;color:var(--txt);font-size:14px;font-family:inherit;outline:0;transition:.2s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.08);
}
.form-group .hint{font-size:12px;color:var(--txt-3);margin-top:5px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}

/* ---------- 认证页 ---------- */
.auth-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;position:relative;
}
.auth-page::before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(800px 600px at 70% 20%,rgba(59,130,246,.15),transparent 60%),radial-gradient(600px 500px at 20% 80%,rgba(139,92,246,.1),transparent 60%),var(--bg)}
.auth-card{
  width:min(440px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;
  padding:40px 36px;box-shadow:0 30px 80px rgba(0,0,0,.4);
}
.auth-logo{text-align:center;margin-bottom:30px}
.auth-logo .icon{
  width:56px;height:56px;border-radius:14px;display:grid;place-items:center;margin:0 auto 16px;
  background:var(--grad);color:var(--bg);font-weight:900;font-size:24px;box-shadow:var(--shadow);
}
.auth-logo h1{font-size:24px;font-weight:800}
.auth-logo p{font-size:13px;color:var(--txt-3);margin-top:4px}
.auth-tabs{display:flex;margin-bottom:26px;border-bottom:1px solid var(--line)}
.auth-tabs button{
  flex:1;padding:11px;background:none;border:0;color:var(--txt-3);font-size:15px;cursor:pointer;
  border-bottom:2px solid transparent;transition:.2s;font-family:inherit;font-weight:600;
}
.auth-tabs button.active{color:var(--cyan);border-bottom-color:var(--cyan)}
.auth-error{
  background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.25);color:var(--red);
  padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px;display:none;
}
.auth-error.show{display:block}

/* ---------- 模态框 ---------- */
.modal-mask{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;background:rgba(3,6,14,.75);backdrop-filter:blur(6px);padding:20px}
.modal-mask.show{display:flex;animation:fade .2s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{
  width:min(560px,100%);max-height:88vh;overflow-y:auto;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--line)}
.modal-head h3{font-size:17px;font-weight:700}
.modal-close{background:none;border:0;color:var(--txt-3);font-size:24px;cursor:pointer;padding:0;width:30px;height:30px;line-height:1}
.modal-close:hover{color:var(--red)}
.modal-body{padding:24px}
.modal-foot{padding:16px 24px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:10px}

/* ---------- 空状态 ---------- */
.empty{text-align:center;padding:50px 20px;color:var(--txt-3)}
.empty .icon{font-size:40px;margin-bottom:12px;opacity:.4}
.empty p{font-size:14px}

/* ---------- Toast ---------- */
#toast{position:fixed;top:70px;left:50%;transform:translateX(-50%) translateY(-20px);z-index:300;padding:12px 26px;border-radius:8px;font-size:14px;font-weight:600;opacity:0;transition:.35s;pointer-events:none;max-width:90%;text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.success{background:rgba(52,211,153,.95);color:#06090f}
#toast.error{background:rgba(248,113,113,.95);color:#fff}

/* ---------- 查询工具 ---------- */
.lookup-box{display:flex;gap:12px;margin-bottom:24px}
.lookup-box input{flex:1}
.lookup-box select{width:130px}
.lookup-result{font-family:var(--mono);font-size:13px}
.lookup-result .row{display:grid;grid-template-columns:80px 1fr 1fr 80px 80px;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line-2);align-items:center}
.lookup-result .row.head{font-weight:700;color:var(--txt-3);font-size:12px;text-transform:uppercase}
.lookup-result .row .val{color:var(--cyan);word-break:break-all}

/* ---------- 日志 ---------- */
.log-item{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line-2)}
.log-item .time{color:var(--txt-3);font-size:12px;font-family:var(--mono);flex-shrink:0;width:150px}
.log-item .action{font-size:13px}
.log-item .action b{color:var(--cyan)}

/* ---------- 分页 ---------- */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:20px}
.pagination button{padding:7px 14px;border-radius:6px;border:1px solid var(--line);background:var(--panel);color:var(--txt-2);cursor:pointer;font-size:13px;font-family:inherit}
.pagination button.active{background:var(--grad);color:var(--bg);border-color:transparent}
.pagination button:hover:not(.active){border-color:var(--cyan);color:var(--cyan)}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay.show{display:block}
  .main{margin-left:0}
  .menu-toggle{display:block}
  .content{padding:18px}
  .stats-grid{grid-template-columns:1fr}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .lookup-result .row{grid-template-columns:1fr;gap:4px}
  .lookup-result .row.head{display:none}
}