:root {
  color-scheme: dark;
  --bg: #050b16;
  --panel: #0b1220;
  --panel-2: #101827;
  --border: #1d3148;
  --text: #e5f2ff;
  --muted: #8aa4bc;
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --danger: #fb7185;
  --warning: #fbbf24;
  --ok: #34d399;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(34, 211, 238, .13), transparent 30%), var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; text-decoration: none; }
.shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar { border-right: 1px solid var(--border); background: rgba(5, 11, 22, .88); padding: 24px; }
.brand { font-size: 22px; font-weight: 800; letter-spacing: .02em; margin-bottom: 28px; }
.brand span { color: var(--cyan); }
.nav { display: grid; gap: 8px; }
.nav a, .nav button { display: block; width: 100%; border: 1px solid transparent; border-radius: 8px; padding: 11px 12px; color: var(--muted); background: transparent; text-align: left; font: inherit; cursor: pointer; }
.nav a:hover, .nav button:hover { border-color: var(--border); color: var(--text); background: rgba(34, 211, 238, .06); }
.main { padding: 28px; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 24px; }
.title { margin: 0; font-size: 28px; }
.muted { color: var(--muted); }
.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: linear-gradient(180deg, rgba(16, 24, 39, .96), rgba(11, 18, 32, .96)); border: 1px solid var(--border); border-radius: 8px; padding: 18px; box-shadow: 0 18px 50px rgba(0,0,0,.22); }
.metric { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.metric-value { font-size: 34px; font-weight: 800; margin-top: 8px; }
.actions { display: flex; gap: 10px; align-items: center; }
.btn { border: 1px solid rgba(34,211,238,.55); background: rgba(34,211,238,.1); color: var(--text); border-radius: 8px; padding: 10px 13px; cursor: pointer; font-weight: 700; }
.btn-danger { border-color: rgba(251,113,133,.55); background: rgba(251,113,133,.1); }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.badge { display: inline-flex; align-items: center; border-radius: 999px; border: 1px solid var(--border); padding: 4px 8px; font-size: 12px; color: var(--muted); }
.badge.ok { color: var(--ok); border-color: rgba(52,211,153,.5); }
.badge.warn { color: var(--warning); border-color: rgba(251,191,36,.5); }
.badge.danger { color: var(--danger); border-color: rgba(251,113,133,.5); }
.form { display: grid; gap: 14px; max-width: 880px; }
.field { display: grid; gap: 7px; }
label { color: var(--muted); font-size: 13px; }
input, select, textarea { width: 100%; border: 1px solid var(--border); border-radius: 8px; background: #070e1b; color: var(--text); padding: 11px 12px; font: inherit; }
textarea { min-height: 110px; resize: vertical; }
.notice { border: 1px solid rgba(34,211,238,.45); background: rgba(34,211,238,.08); border-radius: 8px; padding: 12px 14px; margin-bottom: 18px; overflow-wrap: anywhere; }
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login .card { width: min(430px, 100%); }
@media (max-width: 1000px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
}