:root {
  color-scheme: light;
  --bg: #0b141a;
  --card: #111b21;
  --text: #e9edef;
  --muted: #8696a0;
  --accent: #00a884;
  --danger: #f15c6d;
  --line: #233138;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: grid;
  place-items: start center;
  padding: 32px 16px;
}

.card {
  width: min(960px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
}

h1 { margin: 0 0 8px; font-size: 1.4rem; }

.hint { color: var(--muted); }

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-on {
  color: #25d366;
}

.status-on .status-dot {
  background: #25d366;
  box-shadow: 0 0 8px #25d366;
}

.status-off {
  color: var(--muted);
}

.status-off .status-dot {
  background: var(--danger);
  box-shadow: 0 0 8px var(--danger);
}

.error { color: var(--danger); }

#qr {
  display: none;
  margin: 20px auto;
  background: #fff;
  padding: 12px;
  border-radius: 12px;
}

#qr:not([hidden]) {
  display: block;
}

.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 16px 0;
  flex-wrap: wrap;
}

.toolbar .all {
  white-space: nowrap;
}

.empty {
  color: var(--muted);
  padding: 18px 12px !important;
}

#search {
  flex: 1;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #0b141a;
  color: var(--text);
}

#groups {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 420px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

#groups li {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

#groups li:last-child { border-bottom: 0; }

#groups label {
  display: flex;
  gap: 10px;
  align-items: center;
  cursor: pointer;
}

.count { color: var(--muted); margin-left: auto; font-size: 0.85rem; }

.actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

button {
  background: var(--accent);
  color: #111;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

.table-wrap {
  margin-top: 12px;
  max-height: 480px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  position: sticky;
  top: 0;
  background: #111b21;
  color: var(--muted);
  font-weight: 600;
}

tr.missing td:nth-child(2) {
  color: var(--danger);
}

.app-footer {
  width: min(960px, 100%);
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}