:root {
  --bg: #0c1017;
  --panel: #141b26;
  --panel-2: #1b2433;
  --line: #2a3548;
  --text: #e8eef7;
  --muted: #8b9bb0;
  --accent: #3ee0c5;
  --accent-2: #6ea8ff;
  --warn: #f0b429;
  --bad: #ff6b7a;
  --ok: #3ee0c5;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  font-family: "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); }
.hidden { display: none !important; }

.login {
  min-height: 100%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(62, 224, 197, 0.12), transparent),
    radial-gradient(900px 400px at 100% 0%, rgba(110, 168, 255, 0.1), transparent);
}
.card {
  width: min(420px, calc(100% - 32px));
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.brand {
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
}
h1 { font-size: 22px; margin: 10px 0 8px; }
.card p, .sub { color: var(--muted); font-size: 13px; line-height: 1.6; }
label { display: block; margin: 16px 0 8px; font-size: 12px; color: var(--muted); }
input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}
button {
  margin-top: 16px;
  background: var(--accent);
  color: #06241e;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
}
button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  margin-top: 0;
}
button.tiny { margin-top: 0; padding: 7px 10px; font-size: 12px; }
button.danger {
  background: transparent;
  color: var(--bad);
  border: 1px solid rgba(255, 107, 122, 0.45);
}
.err { color: var(--bad); min-height: 1.2em; margin-top: 10px; font-size: 13px; }

.app { height: 100%; display: flex; flex-direction: column; }
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(20, 27, 38, 0.9);
}
.header-actions { display: flex; gap: 8px; }
main { flex: 1; display: grid; grid-template-columns: 320px 1fr; min-height: 0; }
aside { border-right: 1px solid var(--line); overflow: auto; }
.side-title { padding: 14px 16px 8px; color: var(--muted); font-size: 12px; }
.list { padding: 0 10px 16px; }
.item {
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  margin-bottom: 8px;
  cursor: pointer;
}
.item:hover, .item.active { border-color: var(--accent); }
.item .row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.dot.online { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.offline { background: var(--bad); }
.meta { color: var(--muted); font-size: 12px; margin-top: 6px; }

.detail { padding: 22px; overflow: auto; }
.detail.empty { display: grid; place-items: center; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.kpi {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}
.kpi .k { color: var(--muted); font-size: 12px; }
.kpi .v { font-size: 20px; margin-top: 6px; font-variant-numeric: tabular-nums; }
.block {
  margin-top: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}
.block h2 { margin: 0 0 10px; font-size: 15px; }
pre, code, .cmd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}
.cmd {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--muted);
  margin: 0 8px 8px 0;
}
.pill.ok { color: var(--ok); border-color: rgba(62, 224, 197, 0.4); }
.pill.no { color: var(--muted); }

@media (max-width: 860px) {
  main { grid-template-columns: 1fr; }
  aside { border-right: 0; border-bottom: 1px solid var(--line); max-height: 36vh; }
}