:root {
  --bg:        #0d1117;
  --panel:     #161b22;
  --border:    #30363d;
  --fg:        #c9d1d9;
  --dim:       #8b949e;
  --accent:    #58a6ff;
  --self:      #f0883e;
  --ok:        #3fb950;
  --idle:      #6e7681;
  --warn:      #d29922;
  --down:      #f85149;
  --mono:      ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 13px/1.5 var(--mono);
  -webkit-font-smoothing: antialiased;
}

/* ---- header ---- */
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  flex-wrap: wrap;
}

h1 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
h1 .node { color: var(--self); }

.spacer { flex: 1; }

input[type=password], input[type=text] {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font: 12px var(--mono);
  padding: 5px 8px;
  border-radius: 5px;
  width: 230px;
}
input:focus { outline: none; border-color: var(--accent); }

button {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font: 12px var(--mono);
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); color: var(--accent); }

.status {
  font-size: 12px;
  color: var(--dim);
  display: flex;
  align-items: center;
  gap: 6px;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--idle);
  transition: background .3s;
}
.dot.live  { background: var(--ok); box-shadow: 0 0 6px var(--ok); }
.dot.error { background: var(--down); box-shadow: 0 0 6px var(--down); }

main { padding: 20px; }

#err {
  margin: 0 0 16px;
  padding: 10px 14px;
  border: 1px solid var(--down);
  border-left-width: 3px;
  border-radius: 5px;
  background: rgba(248,81,73,.08);
  color: #ff9992;
  font-size: 12px;
  white-space: pre-wrap;
}

/* ---- topology ---- */
.topo-wrap { overflow-x: auto; margin-bottom: 28px; }
.topology {
  position: relative;
  min-height: 460px;
}
.topology svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.link { stroke: var(--border); stroke-width: 1.5; }
.link.active { stroke: var(--accent); opacity: .55; }
.link.down { stroke: var(--down); opacity: .35; }

/* Box geometry is duplicated in js/config.js — the layout maths needs real
   numbers before the boxes exist in the DOM. Change both together. */
.node-box {
  position: absolute;
  transform: translate(-50%, -50%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  width: 176px;
  cursor: pointer;
  transition: border-color .15s;
}
.node-box:hover { border-color: var(--accent); }
.node-box.self {
  border-color: var(--self);
  cursor: default;
  background: #1c1917;
}
.node-box.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

/* Past ~6 peers the ring needed to clear the boxes gets impractically
   wide, so the boxes shrink to the two rows that matter. Full detail
   stays in the table below. */
.node-box.compact { width: 132px; padding: 8px 10px; }
.node-box.compact .node-row.detail { display: none; }
.node-box.compact .node-id { font-size: 12px; margin-bottom: 5px; }

.node-id {
  font-weight: 600;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 7px;
}
.node-box.self .node-id { color: var(--self); }

.node-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 11px;
  color: var(--dim);
}
.node-row b { color: var(--fg); font-weight: 500; }

.badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--dim);
  font-weight: 400;
  margin-left: auto;
}
.badge.live  { color: var(--ok);   border-color: rgba(63,185,80,.4); }
.badge.idle  { color: var(--idle); }
.badge.warn  { color: var(--warn); border-color: rgba(210,153,34,.4); }
.badge.down  { color: var(--down); border-color: rgba(248,81,73,.4); }

/* ---- detail table ---- */
.detail-panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
}
.detail-head {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--dim);
}
.detail-head b { color: var(--fg); }

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th {
  text-align: left;
  padding: 8px 14px;
  color: var(--dim);
  font-weight: 400;
  font-size: 11px;
  border-bottom: 1px solid var(--border);
}
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
th.grp { border-left: 1px solid var(--border); color: var(--fg); }
td.grp { border-left: 1px solid rgba(48,54,61,.5); }
td {
  padding: 8px 14px;
  border-bottom: 1px solid rgba(48,54,61,.5);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(88,166,255,.05); }
.muted { color: var(--dim); }
.empty { padding: 22px 14px; text-align: center; color: var(--dim); font-size: 12px; }

/* ---- footer ---- */
footer {
  padding: 0 20px 24px;
  font-size: 11px;
  color: var(--dim);
  line-height: 1.7;
}
footer code { color: var(--fg); }