:root {
  --bg: #0f1115;
  --panel: #161a21;
  --panel-2: #1d222c;
  --border: #262c38;
  --text: #d6dae2;
  --muted: #8a92a1;
  --accent: #6cb6ff;
  --ok: #46c87a;
  --warn: #e3b341;
  --bad: #e35d6a;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
h1, h2, h3 { margin: 0; }
button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 4px; cursor: pointer; font: inherit;
}
button:hover { background: #262c38; }
input[type="text"], input[type="password"] {
  background: var(--panel); color: var(--text); border: 1px solid var(--border);
  padding: 4px 8px; border-radius: 4px; font: inherit;
}
.muted { color: var(--muted); }
.error { color: var(--bad); }

header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--panel);
}
header h1 { font-size: 15px; font-weight: 600; letter-spacing: 0.02em; }
.hdr-right { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

main { padding: 16px 20px; display: flex; flex-direction: column; gap: 16px; }

.grid-top {
  display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: 16px;
}
@media (max-width: 800px) { .grid-top { grid-template-columns: 1fr; } }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 12px 14px;
}
.card h2 { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.card-head h2 { margin: 0; }
.card-head-right { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.card-head-right input[type="text"] { min-width: 0; flex: 1 1 140px; }

.services-list { display: flex; flex-direction: column; gap: 6px; }
.svc-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; }
.svc-name { flex: 1; }
.svc-age { color: var(--muted); font-variant-numeric: tabular-nums; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: 0 0 auto; }
.dot-ok { background: var(--ok); box-shadow: 0 0 6px rgba(70,200,122,0.35); }
.dot-warn { background: var(--warn); }
.dot-bad { background: var(--bad); animation: pulse 1.5s infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.events-list {
  list-style: none; margin: 0; padding: 0; height: 280px; overflow-y: auto;
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
  padding: 6px 8px; font-family: ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 12px;
}
.events-list li { padding: 2px 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.evt-time { color: var(--muted); margin-right: 6px; }
.evt-type-open { color: var(--accent); }
.evt-type-final { color: var(--ok); }
.evt-type-heartbeat { color: var(--muted); }
.evt-type-hello { color: var(--warn); }

.ws-state { font-size: 11px; padding: 2px 6px; border-radius: 3px; }
.ws-state-connected { color: var(--ok); border: 1px solid var(--ok); }
.ws-state-connecting { color: var(--warn); border: 1px solid var(--warn); }
.ws-state-disconnected { color: var(--bad); border: 1px solid var(--bad); }

#channels-card { overflow-x: auto; }
.channels-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.channels-table th, .channels-table td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.channels-table th { color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; font-size: 11px; }
.channels-table td { font-variant-numeric: tabular-nums; }
.state-ok { color: var(--ok); }
.state-connecting { color: var(--warn); }
.state-reconnecting { color: var(--warn); }
.state-dead { color: var(--bad); }

.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.modal-hidden { display: none; }
.modal-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 20px 24px; min-width: 280px; max-width: 480px;
  width: calc(100% - 32px);
}
.modal-box h2 { font-size: 14px; margin-bottom: 6px; }
.modal-box form { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.modal-box input { flex: 1 1 160px; min-width: 0; }

/* ── Tablet (≤768px) ──────────────────────────────────────────────────
   Bump body type, give buttons larger tap targets, soften padding. */
@media (max-width: 768px) {
  :root { font-size: 14px; }
  button {
    padding: 8px 14px; border-radius: 5px; min-height: 36px;
  }
  input[type="text"], input[type="password"] {
    padding: 8px 10px; min-height: 36px;
  }
  header { padding: 10px 14px; }
  main { padding: 14px; gap: 14px; }
  .card { padding: 16px; }
  .channels-table { font-size: 13px; }
  .channels-table th, .channels-table td { padding: 8px 8px; }
  .events-list { font-size: 13px; }
}

/* ── Phone (≤600px) ───────────────────────────────────────────────────
   Channels table → card-per-row using ::before labels (no JS changes).
   Bigger tap targets, wrap event list so long codes stay readable. */
@media (max-width: 600px) {
  button { min-height: 40px; padding: 9px 14px; }
  input[type="text"], input[type="password"] { min-height: 40px; }
  .card { padding: 18px 16px; }
  header { padding: 12px 14px; }

  #channels-card { overflow-x: visible; }
  .channels-table { display: block; }
  .channels-table thead { display: none; }
  .channels-table tbody { display: flex; flex-direction: column; gap: 10px; }
  .channels-table tr {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 4px 12px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 10px 12px;
  }
  .channels-table td {
    display: contents;
    border-bottom: none;
    padding: 0;
  }
  /* Empty cells would collapse the grid and shift labels next to values
     from the following row. Render a muted em-dash placeholder so each
     label+value pair occupies its own grid row. */
  .channels-table td:empty::after {
    content: "—";
    color: var(--muted);
  }
  .channels-table td::before {
    content: attr(data-label);
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-size: 11px;
    align-self: center;
  }
  /* Map each cell to its header label via column order */
  .channels-table td:nth-of-type(1)::before { content: "gameType"; }
  .channels-table td:nth-of-type(2)::before { content: "mac"; }
  .channels-table td:nth-of-type(3)::before { content: "alias"; }
  .channels-table td:nth-of-type(4)::before { content: "state"; }
  .channels-table td:nth-of-type(5)::before { content: "ageMs"; }
  .channels-table td:nth-of-type(6)::before { content: "rounds"; }
  .channels-table td:nth-of-type(7)::before { content: "results"; }
  .channels-table td:nth-of-type(8)::before { content: "reconnects"; }
  /* Empty-state row (single colspan=8 cell) — show just the message */
  .channels-table td[colspan]::before { content: ""; display: none; }
  .channels-table td[colspan] { grid-column: 1 / -1; }

  /* Events: allow wrap so long round codes stay readable */
  .events-list li { white-space: normal; overflow: visible; text-overflow: clip; }
}

/* ── Narrow phone (≤480px) ─────────────────────────────────────────────
   Stack header right under h1, slightly tighter chrome. */
@media (max-width: 480px) {
  header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .hdr-right { width: 100%; justify-content: space-between; }
  main { padding: 12px; }
  .card-head { align-items: flex-start; }
  .card-head-right { width: 100%; }
}