:root {
  --bg: #f5f6f8; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e3e6eb;
  --accent: #2f6fdd; --accent-text: #fff; --ok: #1a9b55; --off: #9aa1ab; --danger: #d23b3b;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14171c; --card: #1d2128; --text: #e6e8eb; --muted: #9aa1ab; --line: #2c323b;
    --accent: #5b8ff0; --ok: #39c27a; --off: #5d646e; --danger: #f06262; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 "Malgun Gothic", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif; }
.hidden { display: none !important; }
button { font: inherit; cursor: pointer; border: 1px solid var(--accent); background: var(--accent);
  color: var(--accent-text); border-radius: 6px; padding: 6px 12px; }
button.ghost { background: transparent; color: var(--text); border-color: var(--line); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button.small { padding: 2px 8px; font-size: 12px; }
input, select, textarea { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 6px; padding: 6px 8px; width: 100%; }
label { display: block; margin: 10px 0; color: var(--muted); font-size: 13px; }
label input, label select, label textarea { margin-top: 4px; }
label.check { display: flex; gap: 8px; align-items: center; color: var(--text); }
label.check input { width: auto; margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.login { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login form { width: 100%; max-width: 360px; }
.login h1 { margin: 0 0 10px; font-size: 20px; }
.login button { width: 100%; margin-top: 8px; padding: 10px; }
.err { color: var(--danger); min-height: 1.5em; margin: 8px 0 0; }
header { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 10px 16px;
  background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; }
header nav { display: flex; flex-wrap: wrap; gap: 4px; }
header nav button { background: transparent; color: var(--text); border-color: transparent; }
header nav button.active { background: var(--accent); color: var(--accent-text); }
.spacer { flex: 1; }
main { padding: 16px; max-width: 1200px; margin: 0 auto; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar h2 { margin: 0; font-size: 18px; flex: 1; }
.toolbar input, .toolbar select { width: auto; }
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
tr:last-child td { border-bottom: 0; }
td.wrap { white-space: normal; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--off); margin-right: 6px; }
.dot.on { background: var(--ok); }
.badge { display: inline-block; padding: 0 6px; border-radius: 4px; font-size: 12px; border: 1px solid var(--line); color: var(--muted); }
.badge.live { color: var(--ok); border-color: var(--ok); }
.muted { color: var(--muted); }
.mono { font-family: Consolas, "SF Mono", monospace; font-size: 12.5px; }
pre { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 10px; overflow-x: auto;
  white-space: pre-wrap; word-break: break-all; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.actions { display: flex; gap: 4px; }
dialog { border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--text);
  width: min(480px, calc(100vw - 32px)); padding: 20px; }
dialog::backdrop { background: rgba(0,0,0,.4); }
dialog h3 { margin: 0 0 8px; }
.dlg-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 8px 16px; border-radius: 6px; opacity: 0; transition: opacity .2s; pointer-events: none; }
#toast.show { opacity: 1; }
.subtabs { display: flex; gap: 4px; margin-bottom: 12px; }
.subtabs button { background: transparent; color: var(--text); border-color: var(--line); }
.subtabs button.active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
img.qr { background: #fff; padding: 8px; border-radius: 6px; }