:root {
  --bg: #0f1419;
  --panel: #171d26;
  --panel-2: #1e2630;
  --border: #2a3340;
  --text: #d8dee9;
  --muted: #8a97a8;
  --accent: #4fa3ff;
  --green: #3fb950;
  --red: #f85149;
  --amber: #d29922;
  --purple: #a371f7;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

#app { display: flex; min-height: 100vh; }

/* ---- sidebar ---- */
.sidebar {
  width: 220px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 16px 0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.brand { padding: 0 18px 14px; }
.brand h1 { font-size: 15px; margin: 0; }
.brand .sub { color: var(--muted); font-size: 11px; margin-top: 3px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 18px; cursor: pointer; color: var(--muted);
  border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { color: var(--text); border-left-color: var(--accent); background: var(--panel-2); }
.nav-item .ico { width: 18px; text-align: center; }
.conn-pill {
  margin: 12px 18px; padding: 8px 10px; border-radius: 6px;
  background: var(--panel-2); font-size: 11px; color: var(--muted);
}
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.dot.on { background: var(--green); }
.dot.off { background: var(--red); }

/* ---- main ---- */
.main { flex: 1; padding: 22px 26px; overflow-x: hidden; }
.page-title { font-size: 19px; margin: 0 0 18px; display: flex; align-items: center; gap: 12px; }
.page-title .tag { font-size: 11px; color: var(--muted); font-weight: normal; }

/* ---- cards ---- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; margin-bottom: 22px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; }
.card .label { color: var(--muted); font-size: 12px; }
.card .value { font-size: 26px; font-weight: 600; margin-top: 6px; }
.card .value.green { color: var(--green); }
.card .value.red { color: var(--red); }
.card .value.amber { color: var(--amber); }
.card .value.accent { color: var(--accent); }

/* ---- panels ---- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 18px; }
.panel h3 { margin: 0; padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.panel .body { padding: 14px 16px; }

/* ---- tables ---- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--muted); font-weight: 500; padding: 9px 12px; border-bottom: 1px solid var(--border); font-size: 12px; white-space: nowrap; }
td { padding: 9px 12px; border-bottom: 1px solid var(--border); }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--panel-2); }
tr.selected td { background: #233044; }

/* ---- badges ---- */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; }
.badge.ok { background: rgba(63,185,80,.15); color: var(--green); }
.badge.err { background: rgba(248,81,73,.15); color: var(--red); }
.badge.warn { background: rgba(210,153,34,.15); color: var(--amber); }
.badge.info { background: rgba(79,163,255,.15); color: var(--accent); }
.badge.muted { background: var(--panel-2); color: var(--muted); }
.badge.purple { background: rgba(163,113,247,.15); color: var(--purple); }

/* ---- forms / buttons ---- */
input, select, textarea {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 6px; padding: 7px 10px; font-size: 13px; font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { width: 100%; font-family: var(--mono); font-size: 12px; line-height: 1.5; resize: vertical; }
button {
  background: var(--accent); color: #06223f; border: none; border-radius: 6px;
  padding: 7px 14px; font-size: 13px; font-weight: 600; cursor: pointer;
}
button:hover { filter: brightness(1.1); }
button.ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--red); color: #fff; }
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.filter-bar input, .filter-bar select { width: 130px; }

/* ---- code / hex ---- */
.mono { font-family: var(--mono); font-size: 12px; }
.hex { font-family: var(--mono); font-size: 12px; background: var(--bg); border: 1px solid var(--border);
       border-radius: 6px; padding: 10px; white-space: pre-wrap; word-break: break-all; color: #b9c4d4; max-height: 160px; overflow: auto; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.kv { display: grid; grid-template-columns: 180px 1fr; gap: 4px 12px; font-size: 13px; }
.kv .k { color: var(--muted); }
.tlv-tree { font-family: var(--mono); font-size: 12px; }
.tlv-row { padding: 3px 0; border-bottom: 1px dashed var(--border); }
.tlv-tag { color: var(--accent); }
.tlv-name { color: var(--muted); }
.detail-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px; }
.muted { color: var(--muted); }
.right { text-align: right; }
.flex { display: flex; gap: 10px; align-items: center; }
.spacer { flex: 1; }
.empty { color: var(--muted); padding: 30px; text-align: center; }
.note { background: rgba(210,153,34,.1); border: 1px solid rgba(210,153,34,.3); color: #e6c068;
        padding: 8px 12px; border-radius: 6px; font-size: 12px; margin-bottom: 16px; }
.group-head { background: var(--panel-2); font-weight: 600; }