:root {
  --bg: #0f1720;
  --card: #1b2733;
  --fg: #e6edf3;
  --muted: #8aa0b2;
  --accent: #2ea043;
  --border: #2b3947;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 1.25rem; margin: 0; }
.header-right { display: flex; align-items: center; gap: .75rem; }
.header-right form { margin: 0; }
main {
  max-width: 820px;
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
}
.card h2 { margin: 0 0 .75rem; font-size: 1rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: .5rem .75rem;
}
.kv { display: flex; justify-content: space-between; padding: .35rem 0; border-bottom: 1px solid var(--border); }
.kv span { color: var(--muted); }
.kv b { font-variant-numeric: tabular-nums; }
.meta { color: var(--muted); font-size: .85rem; margin-top: .75rem; }
.controls { display: grid; gap: .75rem; }
.row { display: flex; gap: .5rem; align-items: flex-end; flex-wrap: wrap; }
label { display: flex; flex-direction: column; gap: .25rem; font-size: .85rem; color: var(--muted); }
input {
  padding: .5rem .6rem; border-radius: 8px; border: 1px solid var(--border);
  background: #0e161e; color: var(--fg); width: 120px;
}
.btn {
  padding: .55rem .9rem; border-radius: 8px; border: 1px solid var(--border);
  background: #24313d; color: var(--fg); cursor: pointer; font-size: .9rem;
}
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-small { padding: .35rem .7rem; font-size: .8rem; }
.badge { padding: .25rem .6rem; border-radius: 999px; font-size: .8rem; }
.badge-on { background: rgba(46,160,67,.2); color: #4ade80; }
.badge-off { background: rgba(248,113,113,.2); color: #f87171; }
.msg { min-height: 1.2em; color: var(--muted); font-size: .85rem; }

/* Login */
.login-body { display: flex; min-height: 100vh; align-items: center; justify-content: center; }
.login-card { width: min(360px, 92vw); display: grid; gap: .75rem; }
.login-card h1 { margin: 0; font-size: 1.25rem; }
.muted { color: var(--muted); margin: 0 0 .5rem; }
.err { color: #f87171; font-size: .85rem; min-height: 1.2em; margin: 0; }