:root {
  --bg: #0f1419;
  --panel: #18212b;
  --line: #2b3948;
  --text: #e8eef5;
  --muted: #93a4b5;
  --accent: #3d9cf0;
  --ok: #3ecf8e;
  --bad: #f07178;
  --warn: #e6c07b;
  --font: "Segoe UI", "Malgun Gothic", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1d3348 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #243018 0%, transparent 50%),
    var(--bg);
}

.top {
  padding: 28px 24px 8px;
  max-width: 920px;
  margin: 0 auto;
}
.brand {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.sub {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.panel {
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 24px 48px;
  display: grid;
  gap: 18px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.controls label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
.controls select,
.controls button {
  font: inherit;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #101820;
  color: var(--text);
  padding: 0 12px;
}
.controls button {
  background: var(--accent);
  border-color: transparent;
  color: #061018;
  font-weight: 600;
  cursor: pointer;
}
.controls button:hover { filter: brightness(1.08); }
.hint { color: var(--muted); font-size: 13px; align-self: center; }

.status-card {
  display: grid;
  gap: 10px;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}
.row span { color: var(--muted); }

h2 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 600;
}

.machines {
  display: grid;
  gap: 8px;
}
.machines.empty {
  color: var(--muted);
  font-size: 14px;
  padding: 14px;
  border: 1px dashed var(--line);
  border-radius: 10px;
}
.machine {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.machine .id { font-weight: 600; }
.machine .meta { color: var(--muted); font-size: 12px; margin-top: 4px; }
.badge {
  align-self: center;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 999px;
}
.badge.online { background: rgba(62, 207, 142, 0.16); color: var(--ok); }
.badge.offline { background: rgba(240, 113, 120, 0.14); color: var(--bad); }

.log {
  margin: 0;
  min-height: 120px;
  max-height: 260px;
  overflow: auto;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0c1218;
  color: #b7c6d4;
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
}