:root {
  --bg: #121116;
  --raised: #1b1a21;
  --card: #22212a;
  --line: #34323d;
  --text: #f3f1f7;
  --muted: #a8a3b3;
  --faint: #7b7686;
  --accent: #a78bfa;
  --accent-ink: #1a1428;
  --ok: #8fbfa4;
  --warn: #d7b56a;
  --danger: #e2a0a0;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  --sidebar: 240px;
  --pad: 32px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 "Segoe UI Variable", "Segoe UI", sans-serif;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}
.gate-card {
  width: min(440px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow);
}
.mark {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.mark strong { font-weight: 650; letter-spacing: -0.02em; }
.mark span { color: var(--muted); font-size: 14px; }

.lamp {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: #3a3844;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
  flex: none;
}
.mt12 { margin-top: 12px; }
.mt16 { margin-top: 16px; }
.mt24 { margin-top: 24px; }
.mb12 { margin-bottom: 12px; }
.mb16 { margin-bottom: 16px; }
.lamp.is-on { background: var(--accent); }
.lamp.is-wait { background: var(--warn); }
.lamp.is-bad { background: var(--danger); }

h1 {
  margin: 0 0 8px;
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 640;
}
h2 {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.02em;
  font-weight: 640;
}
.lede { margin: 0 0 24px; color: var(--muted); }

.app {
  display: grid;
  grid-template-columns: var(--sidebar) 1fr;
  min-height: 100vh;
}
.side {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 20px 16px;
  border-right: 1px solid var(--line);
  background: var(--raised);
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.nav { display: flex; flex-direction: column; gap: 4px; }
.nav a {
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
}
.nav a.is-active, .nav a:hover, .nav-exit:hover { background: var(--card); color: var(--text); }
.nav form { margin: 0; }
.nav-exit {
  display: flex;
  align-items: center;
  width: 100%;
  height: 36px;
  padding: 0 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  text-align: left;
}
.side-foot { margin-top: auto; color: var(--faint); font-size: 13px; }

.main { padding: var(--pad); max-width: 1080px; }
.top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-end;
  margin-bottom: 24px;
}
.address {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 8px 6px 14px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
}
.stack { display: flex; flex-direction: column; gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}
.card header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.status-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.status-line strong { font-size: 28px; letter-spacing: -0.03em; }
.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.metric {
  background: var(--raised);
  border-radius: 12px;
  padding: 12px;
}
.metric b {
  display: block;
  font-size: 20px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.metric span { color: var(--faint); font-size: 13px; }

.list { display: flex; flex-direction: column; }
.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  min-height: 44px;
  border-top: 1px solid var(--line);
}
.row:first-child { border-top: 0; }
.row small, .muted { color: var(--muted); }
.faint { color: var(--faint); font-size: 13px; }
.indent-1 { padding-left: 16px; }
.indent-2 { padding-left: 32px; }

form.inline, .actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
label { display: block; margin: 0 0 12px; }
label span, .field-label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 14px; }
input[type="text"], input[type="email"], input[type="password"], input[type="number"], select, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}
textarea { min-height: 72px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: #5c5670; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--raised);
  text-decoration: none;
}
.btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: var(--accent-ink);
  font-weight: 650;
}
.btn.danger { color: var(--danger); }
.btn.slim { height: 32px; padding: 0 10px; font-size: 14px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.banner {
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 16px;
  background: var(--raised);
  border: 1px solid var(--line);
}
.banner.bad { border-color: #6a3d3d; color: var(--danger); }
.banner.ok { border-color: #3d5a49; color: var(--ok); }

.key {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 14px;
  word-break: break-all;
  background: var(--bg);
  border-radius: 10px;
  padding: 12px;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 0; border-top: 1px solid var(--line); vertical-align: top; }
th { color: var(--faint); font-weight: 550; font-size: 13px; }
.checks { display: flex; gap: 8px; align-items: center; margin: 8px 0 16px; }
details { margin-top: 16px; color: var(--muted); }
code { font-family: ui-monospace, Consolas, monospace; font-size: 0.92em; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .side {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .nav { flex-direction: row; overflow-x: auto; }
  .nav a { flex: none; }
  .side-foot { display: none; }
  .main { padding: 20px 16px 40px; }
  .grid, .metrics, .top { grid-template-columns: 1fr; display: grid; }
  .top { align-items: stretch; }
  h1 { font-size: 28px; }
}