:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --border: #e3e5ea;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --on: #15803d;
  --on-bg: #dcfce7;
  --off: #6b7280;
  --off-bg: #eef0f3;
  --danger: #b91c1c;
  --warn-bg: #fef3c7;
  --warn: #92400e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #181b21;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --border: #2a2f38;
    --accent: #3b82f6;
    --on: #4ade80;
    --on-bg: #14361f;
    --off: #9aa1ad;
    --off-bg: #232730;
    --danger: #f87171;
    --warn-bg: #3a2d0c;
    --warn: #fcd34d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 1040px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 36px 0 12px; }
h3 { font-size: 17px; margin: 0; }
.muted { color: var(--muted); margin: 2px 0 0; font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.narrow { max-width: 360px; margin: 12vh auto 0; display: flex; flex-direction: column; gap: 14px; }
header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); }
input[type=password], input[type=text], input[type=number] {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
}
button {
  font: inherit; cursor: pointer; border-radius: 8px; padding: 8px 14px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text);
}
button:disabled { opacity: .5; cursor: default; }
button.ghost, .presets button { background: transparent; color: var(--text); border-color: var(--border); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.presets { display: flex; flex-wrap: wrap; gap: 6px; }
.presets button { padding: 4px 10px; font-size: 13px; }
.row { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; }
.minutes input { width: 120px; }
.grant { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.user-head { display: flex; justify-content: space-between; align-items: flex-start; }
.badge { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: var(--off-bg); color: var(--off); }
.badge.on { background: var(--on-bg); color: var(--on); }
.status { margin: 12px 0 0; font-variant-numeric: tabular-nums; }
.warn { background: var(--warn-bg); color: var(--warn); border-radius: 8px; padding: 8px 10px; font-size: 13px; margin: 10px 0 0; }
.error { color: var(--danger); min-height: 1.5em; margin: 0; font-size: 13px; }
.table-wrap { padding: 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; }
tbody tr:last-child td { border-bottom: 0; }
@media (max-width: 400px) { .grid { grid-template-columns: 1fr; } }