:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #656d76;
  --border: #d0d7de;
  --primary: #0b6bcb;
  --primary-text: #ffffff;
  --danger: #c62828;
  --ok: #1a7f37;
  --chip: #eef2f7;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1;
}
.topbar nav { display: flex; gap: 4px; }
.topbar nav button {
  border: 0;
  background: none;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--muted);
  font: inherit;
}
.topbar nav button[aria-current="page"] { background: var(--chip); color: var(--text); font-weight: 600; }
.spacer { flex: 1; }

main { padding: 20px; max-width: 1200px; margin: 0 auto; }

.center-card {
  max-width: 420px;
  margin: 12vh auto;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

h1 { font-size: 20px; margin: 0 0 12px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--muted); }

button, .button {
  font: inherit;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button.primary, .button.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
button.danger { color: var(--danger); }
button.link { border: 0; background: none; color: var(--primary); padding: 0; }
button:disabled { opacity: .5; cursor: default; }

input[type="text"], input[type="email"], select {
  font: inherit;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
}

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .02em; }
td.actions { white-space: nowrap; text-align: right; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 0 8px; border-radius: 10px; font-size: 12px; background: var(--chip); }
.badge.ok { background: #dafbe1; color: var(--ok); }
.badge.off { background: #ffebe9; color: var(--danger); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; gap: 6px; align-items: center; padding: 2px 8px; border-radius: 12px; background: var(--chip); }
.chip button { border: 0; background: none; padding: 0; color: var(--muted); }

.checks { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.picker { max-height: 260px; overflow: auto; border: 1px solid var(--border); border-radius: 6px; margin-top: 8px; }
.picker div { display: flex; justify-content: space-between; gap: 8px; padding: 4px 8px; border-bottom: 1px solid var(--border); }

pre { margin: 4px 0 0; white-space: pre-wrap; word-break: break-word; font-size: 12px; background: var(--chip); padding: 6px; border-radius: 6px; }

#toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  max-width: 420px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--text);
  color: #fff;
  z-index: 10;
}
#toast.error { background: var(--danger); }

dialog { border: 1px solid var(--border); border-radius: 10px; padding: 20px; max-width: 420px; }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 16px 0 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }