:root {
  --bg: #070b14;
  --bg2: #0d1422;
  --panel: #121a2b;
  --line: #243049;
  --text: #e8eefc;
  --muted: #8b9bb8;
  --up: #3ddc84;
  --down: #ff5d5d;
  --ack: #f5c542;
  --acc: #5aa7ff;
  --radius: 12px;
  --font: ui-sans-serif, system-ui, "Segoe UI", Ubuntu, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); min-height: 100%; }
button, input, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }
.err { color: var(--down); min-height: 1.2em; margin-top: .5rem; }

.login-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
  background: radial-gradient(800px 400px at 50% 0%, #152238, var(--bg));
}
.login-card {
  width: min(420px, 100%); background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px; display: grid; gap: 12px;
}
.login-mark {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: #102033; color: var(--acc); font-weight: 800; letter-spacing: .06em;
}
.login-card h1 { margin: 0; font-size: 1.4rem; }
.login-card p { margin: 0; color: var(--muted); }
.login-card label { display: grid; gap: 6px; font-size: .9rem; color: var(--muted); }
.login-card input, .top input, select, .hrow input {
  background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 10px 12px;
}
.login-card button, .diag-form button {
  background: var(--acc); color: #071018; border: 0; border-radius: 10px;
  padding: 12px; font-weight: 700;
}

.top {
  display: flex; align-items: center; gap: 16px; padding: 10px 16px;
  background: #0a101c; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand small { color: var(--muted); font-family: var(--mono); }
.pulse {
  width: 10px; height: 10px; border-radius: 50%; background: var(--up);
  box-shadow: 0 0 0 0 rgba(61,220,132,.7); animation: pulse 2s infinite; display: inline-block;
}
.pulse.bad { background: var(--down); box-shadow: 0 0 0 0 rgba(255,93,93,.7); }
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px transparent; }
}
nav { display: flex; gap: 6px; flex-wrap: wrap; }
nav button, .ghost, .seg button {
  background: transparent; border: 1px solid var(--line); color: var(--text);
  border-radius: 999px; padding: 7px 12px;
}
nav button.on, .seg button.on { background: #1a2740; border-color: #3a527a; }
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
#who { color: var(--muted); font-size: .85rem; }

.kpis {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px; padding: 12px 16px;
}
.kpi {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px;
}
.kpi b { display: block; font-size: 1.6rem; font-variant-numeric: tabular-nums; }
.kpi span { color: var(--muted); font-size: .8rem; }
.kpi.down b { color: var(--down); }
.kpi.up b { color: var(--up); }
.kpi.ack b { color: var(--ack); }

main { padding: 0 16px 40px; }
.hrow { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 8px 0 12px; }
.hrow h2, aside h2, .view h2 { margin: 0; font-size: 1rem; font-weight: 650; }
.split { display: grid; grid-template-columns: 1fr 320px; gap: 16px; }
@media (max-width: 960px) { .split { grid-template-columns: 1fr; } nav { order: 3; width: 100%; } }

.wall {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px;
}
.tile {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px;
  cursor: pointer; min-height: 78px;
}
.tile:hover { border-color: #3d5478; }
.tile .st { font-size: .72rem; font-weight: 700; letter-spacing: .04em; }
.tile .nm { font-weight: 650; margin-top: 4px; line-height: 1.25; }
.tile .ip { color: var(--muted); font-family: var(--mono); font-size: .78rem; }
.tile.up { border-top: 3px solid var(--up); }
.tile.down { border-top: 3px solid var(--down); background: #24141a; }
.tile.acked { border-top: 3px solid var(--ack); }
.st.up { color: var(--up); }
.st.down { color: var(--down); }
.st.acked { color: var(--ack); }

.list { display: grid; gap: 8px; }
.row {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  display: grid; gap: 4px; cursor: pointer;
}
.row small, td small { color: var(--muted); }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; background: var(--bg2); position: sticky; top: 0; }
tr[data-id] { cursor: pointer; }
tr.down { background: #1c1014; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.dot.up { background: var(--up); }
.dot.down { background: var(--down); }
.dot.acked { background: var(--ack); }
.dot.off { background: #556; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }
canvas { width: 100%; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; }
.seg { display: flex; gap: 6px; margin: 8px 0; }
.help, .term {
  background: #0a0e16; border: 1px solid var(--line); border-radius: 10px; padding: 12px;
  font-family: var(--mono); font-size: .8rem; white-space: pre-wrap; color: #c9d6ea;
}
.diag-form { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.diag-form select, .diag-form input { flex: 1; min-width: 120px; }
.dev-head {
  margin: 12px 0; padding: 16px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
}
.dev-head h1 { margin: 0 0 6px; font-size: 1.3rem; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 700; }
.badge.up { background: #143322; color: var(--up); }
.badge.down { background: #3a1515; color: var(--down); }
.badge.acked { background: #3a3110; color: var(--ack); }