:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --border: #dde3ea;
  --text: #1c2733;
  --muted: #64748b;
  --primary: #1d5fae;
  --primary-dark: #164a87;
  --danger: #c0392b;
  --success: #1f8a4c;
  font-family: -apple-system, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

header.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

header.topbar .brand {
  font-weight: 700;
  color: var(--primary-dark);
  font-size: 1.1rem;
  text-decoration: none;
}

nav.mainnav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

nav.mainnav a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}

nav.mainnav a:hover, nav.mainnav a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

main {
  max-width: 1180px;
  margin: 1.5rem auto;
  padding: 0 1.25rem 3rem;
}

h1 { font-size: 1.4rem; margin-bottom: 0.25rem; }
h2 { font-size: 1.1rem; margin-top: 2rem; }
.subtitle { color: var(--muted); margin-top: 0; margin-bottom: 1.25rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.stat { text-align: left; }
.stat .value { font-size: 1.7rem; font-weight: 700; color: var(--primary-dark); }
.stat .label { color: var(--muted); font-size: 0.85rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { background: #eef2f7; font-weight: 600; position: sticky; top: 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
tr:hover td { background: #f8fafc; }
tfoot td { font-weight: 700; background: #eef2f7; }

form.stacked label { display: block; font-size: 0.85rem; color: var(--muted); margin: 0.75rem 0 0.25rem; }
input, select, textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.92rem;
  font-family: inherit;
}
textarea { resize: vertical; }

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #eef2f7; color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 0.3rem 0.65rem; font-size: 0.8rem; }

.row { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1; min-width: 160px; }

.alert { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.9rem; }
.alert.error { background: #fdecea; color: var(--danger); border: 1px solid #f5c6c1; }
.alert.success { background: #e9f7ef; color: var(--success); border: 1px solid #bfe8cf; }
.alert.info { background: #eaf2fb; color: var(--primary-dark); border: 1px solid #c9def3; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge.ok { background: #e9f7ef; color: var(--success); }
.badge.warn { background: #fdf3e3; color: #8a5a00; }
.badge.error { background: #fdecea; color: var(--danger); }
.badge.muted { background: #eef2f7; color: var(--muted); }

.help { color: var(--muted); font-size: 0.82rem; margin-top: 0.35rem; }

.actions-inline { display: flex; gap: 0.5rem; }