:root{--bg:#0b1220;--panel:#111a2f;--line:#1f2a44;--text:#eaf0ff;--muted:#a9b6d3;--pri:#4c8dff;}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:#8bb3ff;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 16px}

/* 顶部导航 */
.header{border-bottom:1px solid var(--line);background:rgba(9,13,24,.8);backdrop-filter:saturate(180%) blur(8px);position:sticky;top:0;z-index:20}
.nav{height:58px;display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:700}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-item{position:relative;padding:8px 6px;border-radius:8px}
.nav-item:hover{background:#0f1730}

/* 在线功能大菜单 */
.mega-trigger{cursor:pointer}
.mega{position:absolute;left:-260px;top:46px;width:880px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 18px;display:none;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.mega.show{display:block}
.mega-head{display:flex;gap:24px;margin-bottom:8px;border-bottom:1px dashed var(--line);padding-bottom:10px}
.mega-col{width:50%}
.mega-col h4{margin:6px 0 12px 0;font-weight:700}
.mega-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}
.tag{font-size:12px;color:#ff7b7b;margin-left:6px}
.new{color:#ffd54d}
.link-row{display:flex;align-items:center;gap:8px}
.icon{width:16px;height:16px;display:inline-block;border-radius:50%;background:linear-gradient(135deg,#6aa8ff,#a98bff)}

/* 内容区 */
.hero{padding:28px 0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.btn{background:var(--pri);border:0;color:#fff;padding:10px 14px;border-radius:10px;cursor:pointer}
.muted{color:var(--muted)}

@media (max-width:960px){
  .mega{position:fixed;left:10px;right:10px;top:64px;width:auto}
  .grid-2{grid-template-columns:1fr}
}
/* 修正颜色与层级 */
.mega-trigger { cursor: pointer; color: #8bb3ff; } /* 顶部“在线功能”蓝色 */
.mega { z-index: 30; } /* 确保下拉层级足够，避免被页面内容挡住 */
.mega-trigger:hover { color: #a3c3ff; }
/* --- Admin Layout --- */
.admin-layout{display:grid;grid-template-columns:240px 1fr;gap:16px;margin:16px 0}
.admin-aside{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px}
.admin-aside .group-title{font-size:12px;color:var(--muted);margin:8px 6px 6px}
.admin-menu{display:grid;gap:6px}
.admin-menu a{padding:10px 12px;border-radius:10px;border:1px solid transparent}
.admin-menu a:hover{background:#0f1730;border-color:#1f2a44}
.admin-menu a.active{background:#0f1730;border-color:#2a3b66}
.admin-main{min-height:420px}
.admin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.admin-header h2{margin:0}
.stat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px}
@media (max-width:960px){
  .admin-layout{grid-template-columns:1fr}
}
/* ===== Admin v2 ===== */
:root{
  --ad-bg:#f5f7fb;
  --ad-panel:#ffffff;
  --ad-line:#e9eef5;
  --ad-ink:#1f2733;
  --ad-muted:#8a97a7;
  --ad-accent:#4c8dff;
  --ad-good:#26c281;
  --ad-warn:#ffb400;
  --ad-bad:#ff5a7a;
}

.admin2-wrap{display:grid;grid-template-columns: 230px 1fr;min-height:calc(100vh - 20px);gap:16px;margin:10px 0}
.admin2-sidebar{background:var(--ad-panel);border:1px solid var(--ad-line);border-radius:14px;overflow:hidden}
.admin2-brand{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--ad-line)}
.admin2-brand .logo{width:28px;height:28px;border-radius:50%;background:#eaf0ff;display:flex;align-items:center;justify-content:center;color:var(--ad-accent);font-weight:700}
.admin2-brand b{font-size:15px;color:var(--ad-ink)}

.ad-menu{padding:10px}
.ad-group-title{font-size:12px;color:var(--ad-muted);margin:10px 8px 6px}
.ad-menu a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--ad-ink);text-decoration:none;border:1px solid transparent}
.ad-menu a:hover{background:#f3f7ff;border-color:#e4edff}
.ad-menu a.active{background:#eaf2ff;border-color:#d6e6ff}
.ad-ico{width:24px;height:24px;border-radius:8px;background:#f1f5ff;display:grid;place-items:center;color:#5b7cff;font-weight:700;font-size:12px}

.admin2-main{display:grid;grid-template-rows: auto 1fr;gap:12px}
.ad-topbar{display:flex;align-items:center;gap:12px;background:var(--ad-panel);border:1px solid var(--ad-line);border-radius:14px;padding:10px 12px}
.ad-search{flex:1;display:flex;align-items:center;gap:8px;background:#f7f9fe;border:1px solid var(--ad-line);border-radius:10px;padding:8px 10px}
.ad-search input{flex:1;border:0;background:transparent;outline:none}
.ad-actions{display:flex;align-items:center;gap:8px}
.ad-action{width:36px;height:36px;border:1px solid var(--ad-line);border-radius:10px;background:#fff;display:grid;place-items:center}
.ad-user{display:flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid var(--ad-line);border-radius:10px}

.ad-content{background:var(--ad-bg);border-radius:12px}
.card{background:var(--ad-panel);border:1px solid var(--ad-line);border-radius:14px;padding:14px}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.kpi{display:flex;align-items:center;gap:12px}
.kpi .k{width:40px;height:40px;border-radius:12px;background:#eef3ff;display:grid;place-items:center;color:#506dff}
.kpi .v{font-size:26px;font-weight:800;color:var(--ad-ink);line-height:1}
.kpi .t{font-size:12px;color:var(--ad-muted)}
.kpi .delta{font-size:12px;margin-top:4px}
.kpi .up{color:var(--ad-good)} .kpi .down{color:var(--ad-bad)}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.quick-links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.qbtn{display:flex;align-items:center;gap:10px;border:1px dashed var(--ad-line);border-radius:12px;padding:14px;background:#fff;text-decoration:none;color:var(--ad-ink)}
.qbtn:hover{border-color:#cfe0ff;background:#f7fbff}
.qico{width:36px;height:36px;border-radius:10px;background:#eff4ff;display:grid;place-items:center;color:#5b7cff;font-weight:700}

.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid var(--ad-line);padding:10px;text-align:left;font-size:14px}
.muted{color:var(--ad-muted)}
@media (max-width:1200px){.kpi-grid{grid-template-columns:repeat(2,1fr)}.quick-links{grid-template-columns:repeat(2,1fr)}}
@media (max-width:840px){.admin2-wrap{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}.quick-links{grid-template-columns:1fr}}
/* --- sidebar collapse --- */
body.sb-collapsed .admin2-wrap{grid-template-columns:72px 1fr}
body.sb-collapsed .admin2-sidebar .ad-menu a{justify-content:center}
body.sb-collapsed .admin2-sidebar b,
body.sb-collapsed .ad-menu a:not(.keep) {text-indent:-9999px}
body.sb-collapsed .ad-menu a .ad-ico{text-indent:0}
body.sb-collapsed .admin2-brand b{display:none}
.sb-toggle{width:36px;height:36px;border:1px solid var(--ad-line);border-radius:10px;background:#fff;display:grid;place-items:center;cursor:pointer}

/* --- top-right admin dropdown --- */
.ad-user{position:relative}
.ad-dd{position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--ad-line);border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.08);min-width:160px;display:none;z-index:20}
.ad-dd a{display:block;padding:10px 12px;color:var(--ad-ink);text-decoration:none}
.ad-dd a:hover{background:#f6f8ff}
.ad-user.open .ad-dd{display:block}
/* —— 后台全屏铺满、去黑边 —— */
body.admin-root { background: #f5f7fb; }
body.admin-root .container { max-width: 100% !important; width: 100% !important; padding: 0 !important; }

/* 顶部工具条和内容区紧贴，无黑边 */
.ad-topbar { margin: 0; border-radius: 0; border-left: 0; border-right: 0; box-shadow: none; }
.ad-content { padding: 0 18px 18px; }

/* 文字对比度更高 */
:root { --ad-ink: #0f172a; --ad-muted: #475569; }
.table th, .table td, .card h2, .card h3, .kpi .v, .kpi .t { color: var(--ad-ink); }
.muted { color: var(--ad-muted) !important; }

/* 服务器状态卡片显色（避免“看不清”） */
.card-ghost { background:#fff; border:1px solid #e9eef5; border-radius:14px; }
.card-ghost .row { display:grid; grid-template-columns: 160px 1fr; gap:10px; padding:8px 0; border-bottom:1px dashed #eef2f7; }
.card-ghost .row:last-child { border-bottom:0; }

/* 统一隐藏前台头部（所有后台页） */
body.admin-root .header,
body.admin-root .site-header,
body.admin-root .nav,
body.admin-root .top-nav { display: none !important; }
/* ====== 后台内容页优化样式 ====== */

/* 内容区域整体背景 */
.ad-content {
  background: #fff;
  padding: 20px;
  border-radius: 6px;
}

/* 标题 */
.ad-content h1, 
.ad-content h2, 
.ad-content h3 {
  font-weight: 700;       /* 加粗 */
  color: #1a1a1a;         /* 深色字体 */
  margin-bottom: 15px;
  border-left: 4px solid #3b82f6; /* 左侧加蓝色线条点缀 */
  padding-left: 10px;
}

/* 表单容器 */
.ad-card {
  background: #f9fafb;    /* 浅灰背景 */
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

/* 表单 label */
.ad-card label {
  display: block;
  font-weight: 600;
  color: #111827;
  margin-bottom: 6px;
}

/* 输入框 */
.ad-card input, 
.ad-card select, 
.ad-card textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  background: #fff;
  font-size: 14px;
  color: #111827;
  margin-bottom: 12px;
  transition: border-color .2s;
}

.ad-card input:focus, 
.ad-card select:focus, 
.ad-card textarea:focus {
  border-color: #3b82f6;  /* 聚焦时蓝色边框 */
  outline: none;
}

/* 按钮 */
button, .btn {
  background: #3b82f6;
  border: none;
  border-radius: 4px;
  color: #fff;
  font-weight: 600;
  padding: 8px 16px;
  cursor: pointer;
  transition: background .2s;
}

button:hover, .btn:hover {
  background: #2563eb;
}