:root {
  --bg: #0f1419;
  --surface: #1a2029;
  --surface2: #232b36;
  --border: #2d3744;
  --text: #e2e8f0;
  --muted: #8b98a8;
  --accent: #3b9eff;
  --green: #2ecc71;
  --yellow: #f1c40f;
  --red: #e74c3c;
  --mono: "Cascadia Code", "SF Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

nav .brand {
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.15s;
}

nav a:hover { color: var(--text); background: var(--surface2); }
nav a.active { color: var(--text); background: var(--surface2); }

main { padding: 24px 28px; max-width: 1400px; margin: 0 auto; }

h1 { font-size: 22px; margin: 0 0 20px; font-weight: 600; }
h2 { font-size: 15px; margin: 24px 0 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
}

.grid { display: grid; gap: 14px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-6 { grid-template-columns: repeat(6, 1fr); }

.stat { text-align: center; }
.stat .value { font-size: 26px; font-weight: 700; font-family: var(--mono); }
.stat .label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: 10px; overflow: hidden; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--surface2); color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface2); }
tr.clickable { cursor: pointer; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge.online { background: rgba(46, 204, 113, 0.18); color: var(--green); }
.badge.offline { background: rgba(231, 76, 60, 0.18); color: var(--red); }
.badge.warn { background: rgba(241, 196, 15, 0.18); color: var(--yellow); }

button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
button:hover { opacity: 0.88; }
button.secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--red); }
button.small { padding: 5px 11px; font-size: 12px; }

input, select, textarea {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }

.badge.online { background: rgba(46, 204, 113, 0.18); color: var(--green); }
.badge.online { background: rgba(46, 204, 113, 0.18); color: var(--green); }

.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }

.log-box {
  background: #0a0e12;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  font-family: var(--mono);
  font-size: 12px;
  max-height: 340px;
  overflow-y: auto;
  line-height: 1.7;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--accent);
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.25s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--red); }

.empty { text-align: center; padding: 48px; color: var(--muted); }

.toolbar { display: flex; gap: 12px; margin-bottom: 18px; align-items: center; flex-wrap: wrap; }
.toolbar input[type="text"] { flex: 1; min-width: 200px; }