:root {
  --bg: #1a1d23;
  --bg-panel: #242830;
  --bg-input: #12141a;
  --border: #3a4150;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --accent: #3d8bfd;
  --ok: #3dd68c;
  --warn: #f5c518;
  --bad: #f07178;
  --relay: #e6b84d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.45 "Segoe UI", "Microsoft YaHei", sans-serif;
  user-select: none;
}

h1, h2 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  margin: 10px 12px;
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 6px 0;
}

label { color: var(--muted); min-width: 72px; }

input, select, button, textarea {
  font: inherit;
  color: var(--text);
}

input, select, textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 8px;
  flex: 1;
}

button {
  background: #2e3542;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 12px;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: #2f6fd6;
  color: #fff;
}

button.danger { background: #5a2a30; border-color: #8a3a42; }

button:disabled { opacity: 0.45; cursor: default; }

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  background: var(--muted);
}
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.bad { background: var(--bad); }

.log {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  height: 220px;
  overflow: auto;
  background: #101218;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px;
  white-space: pre-wrap;
  user-select: text;
}

.stats { color: var(--muted); }
.stats b { color: var(--text); font-weight: 600; }

.hint { color: var(--muted); font-size: 12px; }