:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #6b7385; --line: #e3e6ec;
  --primary: #2f6fed; --primary-text: #fff; --ok: #1f9d55; --warn: #d97706; --bad: #dc2626;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --card: #1b1f27; --text: #e6e9ef; --muted: #98a0b0; --line: #2b313c;
    --primary: #5b8df5; --ok: #34c477; --warn: #f0a33a; --bad: #f05252; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; }
[hidden] { display: none !important; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.big { font-size: 22px; font-weight: 600; }
header { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px;
  border-bottom: 1px solid var(--line); background: var(--card); }
header h1 { font-size: 18px; margin: 0; }
.who { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 14px; }
main { max-width: 1100px; margin: 0 auto; padding: 20px 16px 60px; }
section { margin-bottom: 28px; }
h2 { font-size: 16px; margin: 0 0 10px; }
.section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.section-head h2 { margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.btn { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 8px;
  padding: 7px 12px; font: inherit; font-size: 14px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { border-color: var(--primary); }
.btn.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.danger { color: var(--bad); }
.btn.sm { padding: 3px 8px; font-size: 13px; }
input, select { font: inherit; font-size: 14px; padding: 7px 10px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--bg); color: var(--text); min-width: 0; }
.myip { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.myip-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.pi h3 { margin: 0; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.on { background: var(--ok); } .dot.off { background: var(--bad); }
.pi .meta { color: var(--muted); font-size: 13px; margin: 2px 0 10px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; font-size: 13px; margin-bottom: 10px; }
.stats b { font-weight: 600; }
.bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin-top: 2px; }
.bar > i { display: block; height: 100%; background: var(--primary); }
.badge { font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.badge.bad { color: var(--bad); border-color: var(--bad); }
.ssh { background: var(--bg); border-radius: 8px; padding: 6px 10px; font-size: 13px; margin-bottom: 10px; word-break: break-all; }
.pi .actions { display: flex; gap: 6px; flex-wrap: wrap; }
.row-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.row-form input[name=cidr], .row-form input[name=email] { flex: 2 1 200px; }
.row-form input[name=label] { flex: 1 1 120px; }
.table { width: 100%; border-collapse: separate; border-spacing: 0; padding: 0; overflow: hidden; }
.table th, .table td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
.table th { color: var(--muted); font-weight: 500; font-size: 13px; }
.table tr:last-child td { border-bottom: 0; }
.list { list-style: none; margin: 0; padding: 4px 14px; }
.list li { padding: 7px 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 10px; }
.list li:last-child { border-bottom: 0; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.login { min-height: 100vh; display: grid; place-items: center; }
.login-card { text-align: center; background: var(--card); padding: 40px; border-radius: 16px; border: 1px solid var(--line); }
dialog { border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--text); width: min(480px, 92vw); }
dialog::backdrop { background: rgba(0,0,0,.4); }
dialog label { display: block; margin-bottom: 10px; font-size: 13px; color: var(--muted); }
dialog label input { display: block; width: 100%; margin-top: 4px; }
dialog pre { background: var(--bg); padding: 12px; border-radius: 8px; white-space: pre-wrap; word-break: break-all; font-size: 13px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 10px; font-size: 14px; }
@media (max-width: 720px) {
  .two { grid-template-columns: 1fr; }
  .table thead { display: none; }
  .table td { display: block; border: 0; padding: 2px 12px; }
  .table tr { display: block; border-bottom: 1px solid var(--line); padding: 8px 0; }
  .grid { grid-template-columns: 1fr; }
}