:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel-2: #0f151d;
  --line: #1f2a37;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #4cc2ff;
  --accent-2: #2f81f7;
  --ok: #2ea043;
  --warn: #d29922;
  --err: #f85149;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 600px at 20% -10%, #13233a 0%, var(--bg) 55%) fixed;
  color: var(--text);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 15, 20, .8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { font-weight: 700; font-size: 18px; color: var(--text); letter-spacing: .3px; }
.brand span { color: var(--accent); }
.top nav { display: flex; align-items: center; gap: 18px; }

main { max-width: 1120px; margin: 0 auto; padding: 24px; }
.foot { max-width: 1120px; margin: 8px auto 32px; padding: 0 24px; color: var(--muted); font-size: 12px; }

h1 { font-size: 24px; margin: 0 0 6px; }
h2 { font-size: 17px; margin: 0 0 12px; }
p { margin: 0 0 10px; }

.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

.hero { margin: 4px 0 18px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; margin-bottom: 16px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }

.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 520px; margin: 40px auto; }
.card header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }

.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px 18px; margin: 12px 0 0; }
.kv dt { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.kv dd { margin: 2px 0 0; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--line);
  background: #0d1319;
}
.badge.on { color: #7ee787; border-color: #1d4227; background: #0d1c12; }
.badge.off { color: #ff7b72; border-color: #4a1e1c; background: #1c0f0e; }
.badge.idle { color: var(--muted); }

form { margin: 0; }
form.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
form.inline { display: inline; }

label { display: block; color: var(--muted); font-size: 13px; }
input, select {
  display: block;
  width: 100%;
  min-width: 180px;
  margin-top: 5px;
  padding: 9px 11px;
  color: var(--text);
  background: #0a1017;
  border: 1px solid var(--line);
  border-radius: 9px;
  font: inherit;
}
input:focus, select:focus { outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(47,129,247,.15); }

button, .button {
  display: inline-block;
  padding: 9px 14px;
  border-radius: 9px;
  border: 1px solid #1d4ed8;
  background: linear-gradient(180deg, #2f81f7, #1f6feb);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .button:hover { filter: brightness(1.08); text-decoration: none; }
button.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
  font-weight: 500;
  padding: 5px 10px;
  font-size: 13px;
}
button.danger { background: linear-gradient(180deg, #da3633, #b62324); border-color: #8e1b1b; }
button.link { background: none; border: none; color: var(--muted); padding: 0; font-weight: 500; }
button.link:hover { color: var(--text); }

.buttons { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
tr.disabled td { opacity: .5; }
td.actions { white-space: nowrap; }
td.actions form { display: inline; }

.flash { padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; border: 1px solid var(--line); }
.flash.ok { background: #0d1c12; border-color: #1d4227; color: #7ee787; }
.flash.err { background: #1c0f0e; border-color: #4a1e1c; color: #ff7b72; }

.warn { color: var(--warn); font-size: 13px; }
.qr { background: #fff; padding: 12px; border-radius: 12px; display: inline-block; line-height: 0; }
.qr svg { width: 240px; height: 240px; }

@media (max-width: 640px) {
  main { padding: 16px; }
  .top { padding: 12px 16px; }
  th:nth-child(5), td:nth-child(5) { display: none; }
}