:root {
  --navy: #0f1c33; --navy-2: #16263f; --navy-3: #1e3252;
  --accent: #f97316; --accent-2: #38bdf8;
  --bg: #f4f6f9; --card: #ffffff; --text: #1c2433; --muted: #6b7686;
  --border: #e6eaf0; --border-2: #d7dde6;
  --success: #16a34a; --success-soft: #dcfce7;
  --warning: #d97706; --warning-soft: #fef3c7;
  --danger: #dc2626; --danger-soft: #fee2e2;
  --radius: 12px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14.5px; line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
h1 { font-size: 22px; font-weight: 600; margin: 0 0 4px; }
h2 { font-size: 16px; font-weight: 600; margin: 0 0 10px; }
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--navy); color: #cdd7e6; padding: 18px 14px;
  display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 6px 8px 18px; }
.brand-badge {
  width: 34px; height: 34px; border-radius: 9px; background: var(--accent);
  color: #fff; font-weight: 700; display: grid; place-items: center; font-size: 15px;
}
.brand-name { color: #fff; font-weight: 600; font-size: 15px; line-height: 1.15; }
.brand-sub { color: #7f8da3; }
.nav-group { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: #6b7c96; padding: 14px 8px 4px; }
.nav-link {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 9px;
  color: #cdd7e6; font-size: 13.5px; font-weight: 500;
}
.nav-link:hover { background: var(--navy-2); color: #fff; }
.nav-link.active { background: var(--navy-3); color: #fff; }
.nav-link.disabled { color: #5b6b83; cursor: default; }
.nav-link .tag { margin-left: auto; font-size: 10px; background: var(--navy-2); color: #8fa1bd; padding: 1px 7px; border-radius: 8px; }
.main { padding: 26px 30px; max-width: 1100px; }
.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.blok-titel { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 600; margin-bottom: 12px; }
.blok-titel .dot { width: 8px; height: 8px; border-radius: 50%; }
.leeg { color: var(--muted); font-size: 13px; padding: 10px 0; }
.badge { font-size: 11px; font-weight: 600; padding: 2px 9px; border-radius: 20px; }
.badge.ok { background: var(--success-soft); color: var(--success); }
.badge.off { background: #eef1f5; color: var(--muted); }
.btn {
  display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600;
  padding: 9px 14px; border-radius: 9px; border: 1px solid var(--border-2); background: #fff; color: var(--text); cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(.96); }
.btn-navy { background: var(--navy); border-color: var(--navy); color: #fff; }
label.lbl { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin: 12px 0 5px; }
input, select { width: 100%; padding: 9px 11px; border: 1px solid var(--border-2); border-radius: 9px; font-size: 14px; font-family: inherit; background: #fff; }
input:focus, select:focus { outline: none; border-color: var(--accent); }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.int-list { display: flex; flex-direction: column; gap: 10px; }
.int-row { display: flex; align-items: center; gap: 14px; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.int-naam { font-weight: 600; font-size: 14px; }
.int-mask { font-family: monospace; color: var(--muted); font-size: 12.5px; }
.int-actions { margin-left: auto; display: flex; gap: 8px; }
.hint { font-size: 12.5px; color: var(--muted); }
@media (max-width: 720px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; }
  .grid-2, .row-2 { grid-template-columns: 1fr; }
}