:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #20242a;
  --muted: #667085;
  --line: #d9dee7;
  --brand: #176b5b;
  --brand-2: #0f5447;
  --danger: #b42318;
  --warn: #b54708;
  --ok: #087443;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
}
a { color: var(--brand); text-decoration: none; }
.shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: #111820; color: #f8fafc; padding: 22px 18px; }
.brand { font-weight: 800; font-size: 20px; margin-bottom: 28px; }
.nav a { display: block; color: #d7dee8; padding: 10px 12px; border-radius: 6px; margin-bottom: 4px; }
.nav a:hover, .nav a.active { background: #243241; color: #fff; }
.main { padding: 28px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
h1 { margin: 0; font-size: 26px; }
h2 { margin: 0 0 14px; font-size: 18px; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 18px; }
.metric { color: var(--muted); font-size: 13px; }
.metric strong { display: block; color: var(--ink); font-size: 28px; margin-top: 6px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.stack { display: grid; gap: 14px; }
.table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.table th, .table td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 14px; }
.table th { color: #475467; background: #f9fafb; font-weight: 700; }
.table tr:last-child td { border-bottom: 0; }
input, select, textarea {
  width: 100%;
  border: 1px solid #cfd6e1;
  border-radius: 6px;
  padding: 10px 11px;
  font: inherit;
  background: #fff;
}
textarea { min-height: 110px; resize: vertical; }
label { display: grid; gap: 6px; color: #344054; font-size: 14px; font-weight: 600; }
.btn {
  border: 0;
  border-radius: 6px;
  padding: 10px 14px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn.secondary { background: #344054; }
.btn.light { background: #eef2f6; color: #344054; }
.btn.danger { background: var(--danger); }
.btn.warn { background: var(--warn); }
.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 3px 9px; font-size: 12px; font-weight: 700; background: #eef2f6; color: #344054; }
.badge.ok { background: #dcfae6; color: var(--ok); }
.badge.err { background: #fee4e2; color: var(--danger); }
.badge.warn { background: #fef0c7; color: var(--warn); }
.flash { padding: 12px 14px; border-radius: 7px; margin-bottom: 14px; border: 1px solid var(--line); background: #fff; }
.flash.error { border-color: #fecdca; color: var(--danger); }
.flash.success { border-color: #abefc6; color: var(--ok); }
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login .card { width: min(420px, 100%); }
.qr { max-width: 320px; width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: #fff; }
.muted { color: var(--muted); }
.actions form { display: inline; }
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  .main { padding: 18px; }
}