:root {
  --bg: #eef3f8;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --orange: #f59a23;
  --orange-h: #e88912;
  --green: #16a34a;
  --green-bg: #dcfce7;
  --blue: #2563eb;
  --danger: #dc2626;
  --radius: 16px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  font-family: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
.top { background: #fff; border-bottom: 1px solid var(--line); }
.top-inner { max-width: 1180px; margin: 0 auto; padding: 14px 20px; display: flex; justify-content: space-between; align-items: center; }
.brand { font-weight: 700; font-size: 18px; }
.brand span { color: var(--muted); font-weight: 500; margin-left: 6px; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 600; font-size: 14px; padding: 8px 12px; border-radius: 8px; }
.nav a.on, .nav a:hover { background: #f1f5f9; color: var(--text); }
.wrap { max-width: 1180px; margin: 24px auto 48px; padding: 0 20px; }
.kpis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 16px; }
@media (max-width: 980px) { .kpis { grid-template-columns: 1fr 1fr; } }
.kpi { background: var(--card); border: 1px solid #f1f5f9; border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow); }
.kpi b { display: block; font-size: 22px; }
.kpi span { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; font-weight: 700; }
.stats { width: 100%; border-collapse: collapse; font-size: 13px; }
.stats th { text-align: left; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .03em; padding: 8px 6px; border-bottom: 1px solid var(--line); }
.stats td { vertical-align: top; padding: 10px 6px; border-bottom: 1px solid var(--line); }
.cell { white-space: pre-wrap; word-break: break-word; max-width: 220px; }
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid #f1f5f9; padding: 22px 24px 20px; margin-bottom: 18px; }
.card h1 { margin: 0 0 6px; font-size: 20px; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.lbl { display: block; font-size: 11px; font-weight: 700; letter-spacing: .04em; color: var(--muted); margin: 0 0 6px; text-transform: uppercase; }
.input, select { width: 100%; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 10px 12px; font-size: 14px; color: var(--text); }
.input:focus, select:focus { outline: 2px solid #fed7aa; border-color: var(--orange); }
.row { display: flex; gap: 10px; align-items: stretch; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 14px; }
.grid-5 { display: grid; grid-template-columns: 1.2fr 1fr 1fr 1.4fr 1.6fr auto; gap: 10px; align-items: end; }
.btn { border: 0; border-radius: 8px; padding: 10px 16px; font-weight: 700; cursor: pointer; font-size: 14px; }
.btn.orange { background: var(--orange); color: #fff; white-space: nowrap; }
.btn.orange:hover { background: var(--orange-h); }
.btn.blue { background: var(--blue); color: #fff; }
.btn.ghost { background: #f8fafc; color: var(--text); border: 1px solid var(--line); }
.btn.danger { background: #fff; color: var(--danger); border: 1px solid #fecaca; }
.flash { padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; font-size: 14px; }
.flash.ok { background: var(--green-bg); color: #166534; }
.flash.err { background: #fee2e2; color: #991b1b; }
.search { display: flex; gap: 8px; margin-bottom: 14px; }
.badge { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.on { background: var(--green-bg); color: var(--green); }
.badge.off { background: #fee2e2; color: var(--danger); }
.key-head { display: grid; grid-template-columns: 56px 1.6fr 1fr 0.8fr 1fr 0.8fr 1.4fr 0.9fr; gap: 8px; padding: 0 8px 10px; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; }
.key-block { padding: 16px 16px 12px; }
.key-meta { display: grid; grid-template-columns: 56px 1.6fr 1fr 0.8fr 1fr 0.8fr 1.4fr 0.9fr; gap: 8px; align-items: center; margin-bottom: 12px; }
.code { font-weight: 800; letter-spacing: .02em; }
.sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.edit { background: #f8fafc; border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.machines { margin-top: 10px; font-size: 13px; color: var(--muted); }
.machines table { width: 100%; border-collapse: collapse; }
.machines th, .machines td { text-align: left; padding: 6px 4px; border-bottom: 1px solid var(--line); }
.login-box { max-width: 420px; margin: 60px auto; }
.pager { display: flex; gap: 8px; justify-content: flex-end; margin-top: 12px; }
@media (max-width: 980px) {
  .grid-4, .grid-5, .key-head, .key-meta { grid-template-columns: 1fr; }
  .key-head { display: none; }
}