:root {
  --bg: #000000;
  --panel: rgba(22, 22, 23, 0.82);
  --panel-solid: #161617;
  --panel2: rgba(35, 35, 37, 0.65);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f5f5f7;
  --muted: rgba(245, 245, 247, 0.62);
  --accent: #0071e3;
  --accent-grad: linear-gradient(135deg, #0071e3, #42a5f5);
  --ok: #30d158;
  --err: #ff453a;
  --warn: #ff9f0a;
  --radius: 18px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { min-height: 100%; }
body {
  margin: 0; background: #000; color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.5; font-size: 15px;
  overflow-x: hidden; position: relative;
}
.glass {
  background: rgba(29, 29, 31, 0.72);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}
.topnav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 22px; height: 56px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.logo-icon {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, #ff4d4d, #f9a825, #2979ff);
}
.brand-text { font-weight: 600; font-size: 17px; letter-spacing: -.02em; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 26px 18px 80px; }
.hero { margin: 12px 0 26px; }
.hero-title { font-size: 36px; font-weight: 700; margin: 0; letter-spacing: -.03em; }
.hero-sub { color: var(--muted); margin-top: 6px; font-size: 16px; }
.grid-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.metric {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; backdrop-filter: blur(10px);
}
.metric-k { color: var(--muted); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .02em; }
.metric-v { font-size: 22px; font-weight: 600; margin-top: 6px; word-break: break-all; }
.cards { display: grid; gap: 18px; margin-top: 22px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; backdrop-filter: blur(14px);
}
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 14px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
button {
  background: var(--accent); color: #fff; border: 0; border-radius: 12px;
  padding: 10px 16px; font-size: 14px; font-weight: 500; cursor: pointer;
  transition: transform .12s, filter .12s;
}
button:hover { filter: brightness(1.08); transform: translateY(-1px); }
button:active { transform: scale(.98); }
button.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
button.small { padding: 6px 12px; font-size: 13px; border-radius: 10px; }
button.danger { background: transparent; border: 1px solid var(--err); color: var(--err); }
button:disabled { opacity: .5; cursor: not-allowed; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 11px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 500; }
.badge.ok { background: rgba(48,209,88,0.14); color: var(--ok); }
.badge.err { background: rgba(255,69,58,0.14); color: var(--err); }
.badge.warn { background: rgba(255,159,10,0.14); color: var(--warn); }
.badge.idle { background: var(--panel2); color: var(--muted); }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.err-msg { color: var(--err); font-size: 13px; }
code { background: var(--panel2); border: 1px solid var(--border); border-radius: 7px; padding: 2px 6px; font-family: ui-monospace, monospace; font-size: 12px; }
pre { background: rgba(0,0,0,0.28); border: 1px solid var(--border); border-radius: 14px; padding: 16px; overflow-x: auto; font-size: 13px; white-space: pre-wrap; word-break: break-all; }
.note { color: var(--muted); font-size: 13px; margin-top: 10px; }
input[type=text], input[type=password], input[type=number], textarea, select {
  background: rgba(0,0,0,0.22); border: 1px solid var(--border); color: var(--text);
  border-radius: 12px; padding: 11px 14px; font-size: 14px; outline: none;
}
input[type=text]:focus, input[type=password]:focus, input[type=number]:focus, textarea:focus, select:focus {
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.15);
}
textarea { width: 100%; min-height: 120px; resize: vertical; }
select { min-width: 160px; }
.hidden { display: none !important; }

/* tabs */
.tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tab { padding: 10px 16px; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; font-weight: 500; }
.tab.active { color: var(--text); border-color: var(--accent); }
.tab-content.hidden { display: none; }

/* toggle */
.toggle { position: relative; width: 44px; height: 24px; display: inline-block; cursor: pointer; }
.toggle input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; inset: 0; background: #39393d; border-radius: 999px; transition: .2s; }
.slider:before { content: ""; position: absolute; height: 18px; width: 18px; left: 3px; top: 3px;
  background: #fff; border-radius: 50%; transition: .2s; }
.toggle input:checked + .slider { background: var(--ok); }
.toggle input:checked + .slider:before { transform: translateX(20px); }

/* 全屏背景（登录页与后台统一） */
.bg {
  position: fixed; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  transition: opacity 1.2s ease;
}
.bg.pe { opacity: 0; }
.bg.pc { opacity: 1; }
.bg-mask {
  position: fixed; inset: 0; z-index: 1;
  background: radial-gradient(circle at 50% 30%, rgba(0,0,0,0.2), rgba(0,0,0,0.65));
  backdrop-filter: blur(1px);
}
.app-wrapper { position: relative; z-index: 2; }

/* SPA 视图 */
.view { display: none; animation: fadeIn .35s ease both; }
.view.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* 移动端 */
@media (max-width: 768px) {
  .topnav { padding: 0 14px; height: 50px; }
  .brand-text { display: none; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13px; }
  .hero-title { font-size: 26px; }
  .wrap { padding: 16px 12px 60px; }
  .grid-row { grid-template-columns: 1fr; }
  .card { padding: 16px; border-radius: 16px; }
  th, td { padding: 9px 8px; font-size: 13px; }
  pre { padding: 12px; }
}