:root {
  --bg: #fafaf9;
  --fg: #1c1917;
  --muted: #78716c;
  --line: #e7e5e4;
  --accent: #1d4ed8;
  --on: #16a34a;
  --off: #a8a29e;
  --danger: #b91c1c;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1917;
    --fg: #f5f5f4;
    --muted: #a8a29e;
    --line: #44403c;
    --accent: #93c5fd;
    --danger: #f87171;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

h1 { font-size: 18px; margin: 0; }
h2 { font-size: 16px; margin: 32px 0 8px; }
h3 { font-size: 14px; margin: 24px 0 8px; color: var(--muted); }

main { max-width: 960px; margin: 0 auto; padding: 0 16px 48px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 8px 8px 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-weight: 500; color: var(--muted); font-size: 13px; }

.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }
.dot.on { background: var(--on); }
.dot.off { background: var(--off); }

form { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
label { display: flex; flex-direction: column; font-size: 13px; color: var(--muted); gap: 4px; }
input { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--fg); }
input[type="number"] { width: 110px; }

button, .button {
  font: inherit;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--bg);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button.link { background: none; border: none; color: var(--accent); padding: 0; }
button.danger { color: var(--danger); }

pre { background: var(--line); padding: 12px; border-radius: 6px; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }

.muted { color: var(--muted); }
.error { color: var(--danger); }
#signin { margin-top: 48px; }

@media (max-width: 600px) {
  th:nth-child(3), td:nth-child(3) { display: none; }
}