:root {
  --bg: #0a0e12;
  --panel: #11161c;
  --panel2: #161d25;
  --line: #22303c;
  --txt: #c9d6e2;
  --dim: #6b7a8a;
  --acc: #4fd1c5;
  --green: #38d39f;
  --yellow: #f6c453;
  --red: #ef5b5b;
  --blue: #5aa9ff;
  --mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
}
a { color: var(--blue); text-decoration: none; }

header#topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; letter-spacing: 2px; color: var(--acc); font-size: 15px; }
.brand .sub { color: var(--dim); font-weight: 400; letter-spacing: 0; margin-left: 8px; font-size: 11px; }
.pill {
  padding: 2px 10px; border-radius: 20px; font-size: 11px;
  background: #1c2630; color: var(--dim); border: 1px solid var(--line);
}
.pill.on { color: var(--green); border-color: #1f4636; background: #10201a; }
.pill.off { color: var(--red); border-color: #4a2323; background: #201212; }
.meta { display: flex; gap: 14px; margin-left: auto; color: var(--dim); font-size: 12px; }
.meta span { white-space: nowrap; }

main {
  display: grid;
  grid-template-columns: minmax(420px, 560px) 1fr;
  gap: 12px; padding: 12px;
  align-items: start;
}
@media (max-width: 980px) { main { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-bottom: 1px solid var(--line);
  background: var(--panel2);
}
.panel-head h2 { margin: 0; font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--acc); }
.legend { display: flex; gap: 10px; align-items: center; font-size: 11px; }
.legend .hint { color: var(--dim); }
.lg { padding: 1px 7px; border-radius: 4px; font-size: 10px; }
.lg.fresh { color: var(--green); background: #10201a; }
.lg.stale { color: var(--yellow); background: #201a10; }
.lg.dead { color: var(--red); background: #201212; }
.lg.ssh { color: var(--blue); background: #101a20; }

.graph { width: 100%; height: 520px; background: radial-gradient(circle at 50% 45%, #0d131a 0%, #0a0e12 70%); }
.graph svg { width: 100%; height: 100%; display: block; }
.gnode { cursor: pointer; }
.gnode circle.body { fill: #18222c; stroke: #2c3d4c; stroke-width: 1.5; transition: fill .15s; }
.gnode:hover circle.body { fill: #223140; }
.gnode.sel circle.body { stroke: var(--acc); stroke-width: 2.5; }
.gnode text.label { fill: var(--txt); font-size: 11px; font-family: var(--mono); }
.gnode text.role { fill: var(--dim); font-size: 9px; font-family: var(--mono); }
.gnode .dot { }
.edge { fill: none; stroke-width: 1.5; }
.edge.fresh { stroke: #2b8f6f; }
.edge.stale { stroke: #b08a2e; stroke-dasharray: 5 4; }
.edge.dead { stroke: #8a3b3b; stroke-dasharray: 2 4; }
.edge.ssh { stroke: #3d7bb5; stroke-dasharray: 2 3; }
.edge text { fill: var(--dim); font-size: 9px; font-family: var(--mono); }
.pulse { animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: .9; } 50% { opacity: .35; } }

/* tabs */
.tabs { display: flex; border-bottom: 1px solid var(--line); background: var(--panel2); }
.tabs button {
  background: none; border: none; color: var(--dim); font-family: var(--mono);
  font-size: 12px; padding: 9px 16px; cursor: pointer; border-right: 1px solid var(--line);
  letter-spacing: .5px;
}
.tabs button:hover { color: var(--txt); background: #1a232d; }
.tabs button.active { color: var(--acc); background: var(--panel); box-shadow: inset 0 -2px 0 var(--acc); }
#tab-body { padding: 10px 12px; max-height: 460px; overflow: auto; }

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid #1a222b; vertical-align: top; }
th { color: var(--dim); font-weight: 600; text-transform: uppercase; font-size: 10px; letter-spacing: 1px; position: sticky; top: 0; background: var(--panel); }
tr:hover td { background: #141b23; }
td.num, th.num { text-align: right; }
.mono { font-family: var(--mono); }
.dim { color: var(--dim); }
.ok { color: var(--green); }
.warn { color: var(--yellow); }
.bad { color: var(--red); }
.tag { display: inline-block; padding: 1px 6px; border-radius: 4px; font-size: 10px; margin-right: 4px; }
.tag.all { color: var(--red); background: #241313; }
.tag.mesh { color: var(--yellow); background: #201a10; }
.tag.lan { color: var(--blue); background: #101a24; }
.tag.local { color: var(--dim); background: #1a2027; }
.tag.fresh { color: var(--green); background: #10201a; }
.tag.stale { color: var(--yellow); background: #201a10; }
.tag.dead { color: var(--red); background: #241313; }

.detail { padding: 12px; max-height: 520px; overflow: auto; }
.detail h3 { color: var(--acc); font-size: 11px; letter-spacing: 1px; text-transform: uppercase; margin: 14px 0 6px; }
.detail h3:first-child { margin-top: 0; }
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 3px 12px; font-size: 12px; }
.kv .k { color: var(--dim); }
.close { background: none; border: 1px solid var(--line); color: var(--dim); border-radius: 4px; cursor: pointer; font-size: 11px; padding: 2px 8px; }
.close:hover { color: var(--txt); border-color: var(--dim); }

footer { padding: 10px 16px; color: var(--dim); font-size: 11px; border-top: 1px solid var(--line); text-align: center; }
.empty { color: var(--dim); padding: 14px; text-align: center; }
section.panel#detail-panel { grid-column: 1 / -1; }

/* login overlay */
.login {
  position: fixed; inset: 0; z-index: 50;
  background: radial-gradient(circle at 50% 40%, #0d131a 0%, #070a0d 75%);
  display: flex; align-items: center; justify-content: center;
}
.login[hidden] { display: none; }
.login-card {
  width: 380px; max-width: 90vw; background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; padding: 26px 28px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.login-card h1 { margin: 0; font-size: 20px; letter-spacing: 4px; color: var(--acc); }
.login-card p.dim { margin: 4px 0 0; }
.field { margin: 16px 0 8px; }
.field label { display: block; color: var(--dim); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; }
.field input {
  width: 100%; background: #0d1319; border: 1px solid var(--line); border-radius: 5px;
  color: var(--txt); font-family: var(--mono); font-size: 12px; padding: 9px 10px;
}
.field input:focus { outline: none; border-color: var(--acc); }
#login-btn, #wa-enroll-btn, #wa-login-btn {
  width: 100%; margin-top: 6px; background: var(--acc); color: #04120f;
  border: none; border-radius: 5px; font-family: var(--mono); font-weight: 700;
  font-size: 13px; letter-spacing: 1px; padding: 10px; cursor: pointer;
}
#login-btn:hover, #wa-enroll-btn:hover, #wa-login-btn:hover { background: #6fe0d5; }
#login-btn:disabled, #wa-enroll-btn:disabled, #wa-login-btn:disabled { background: #2b3a44; color: var(--dim); cursor: wait; }
#login-btn.sub { background: none; border: 1px solid var(--line); color: var(--txt); font-weight: 400; }
#login-btn.sub:hover { border-color: var(--acc); color: var(--acc); background: none; }
#login-btn.sub:disabled { border-color: var(--line); color: var(--dim); background: #2b3a44; }
#wa-enroll p.dim, #wa-login p.dim { font-size: 12px; }
.welcome {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  background: #10201a; border-bottom: 1px solid #1f4636; color: var(--green);
  text-align: center; padding: 10px; font-size: 13px; letter-spacing: 1px;
}
.welcome[hidden] { display: none; }
.err { color: var(--red); font-size: 12px; margin-top: 10px; line-height: 1.5; }
.cap { font-size: 11px; margin-bottom: 12px; line-height: 1.5; }
.btn-link { background: none; border: none; color: var(--dim); font-size: 11px; cursor: pointer; text-decoration: underline; padding: 0; margin: 2px 0 10px; display: block; }
.btn-link:hover { color: var(--acc); }
.diag { background: #0b1116; border: 1px solid var(--line); border-radius: 5px; padding: 10px; font-size: 11px; overflow: auto; color: var(--txt); max-height: 260px; }
.help { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.help summary { color: var(--dim); font-size: 11px; cursor: pointer; letter-spacing: .5px; }
.help pre { background: #0b1116; border: 1px solid var(--line); border-radius: 5px; padding: 10px; font-size: 11px; overflow: auto; color: var(--txt); }
.help p { font-size: 11px; }
.meta .auth { color: var(--acc); border-left: 1px solid var(--line); padding-left: 14px; }