:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: #0f172a;
  --bg: #f1f5f9;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); min-height: 100vh; color: var(--text); }

.navbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.navbar a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.navbar a:hover { color: var(--primary); }
.brand { font-weight: 700; font-size: 1rem; color: var(--text); }

.page {
  width: min(980px, 94%);
  margin: 1.5rem auto;
  padding-bottom: 3rem;
  display: grid;
  gap: 1rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.card h2 { font-size: 1.1rem; margin-bottom: 0.75rem; color: var(--primary); }
.muted { color: var(--muted); }

.grid-2 { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 860px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}

label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.35rem; }
input, select, textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}
textarea { min-height: 90px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.row { display: grid; gap: 0.75rem; }
.row-2 { display: grid; gap: 0.75rem; grid-template-columns: 1fr; }
@media (min-width: 520px) { .row-2 { grid-template-columns: 1fr 1fr; } }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.9rem;
  background: #fff;
  cursor: pointer;
  font-weight: 600;
}
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-danger { color: var(--danger); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.alert {
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.95rem;
}
.alert.success { border-color: #bbf7d0; background: #f0fdf4; color: #14532d; }
.alert.error { border-color: #fecaca; background: #fef2f2; color: #7f1d1d; }

.kpi {
  display: grid;
  gap: 0.2rem;
}
.kpi .value { font-size: 2.1rem; font-weight: 800; letter-spacing: -0.02em; }
.kpi .label { font-size: 0.9rem; color: var(--muted); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.9rem; }
th { color: var(--muted); font-size: 0.8rem; }
tr:hover td { background: #f8fafc; }
.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}
.tag.on { background: #dbeafe; border-color: #bfdbfe; color: #1e40af; }
.tag.warn { background: #fee2e2; border-color: #fecaca; color: #991b1b; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.tabs { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.tab {
  padding: 0.35rem 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  color: var(--muted);
  font-weight: 600;
}
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.hidden { display: none !important; }