* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: #f4f6f8;
  color: #1a1a1a;
}
.admin-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  background: #111827;
  color: #fff;
}
.admin-nav a { color: #e5e7eb; text-decoration: none; }
.admin-nav a:hover { color: #fff; }
.admin-nav .brand { font-weight: 700; margin-right: auto; color: #fff; }
.nav-links { display: flex; gap: 1rem; }
.logout-form { display: flex; align-items: center; gap: 0.5rem; margin-left: auto; }
.admin-email { font-size: 0.85rem; color: #9ca3af; }
.admin-main { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }
h1 { margin-top: 0; }
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.kpi {
  background: #fff;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.kpi-value { display: block; font-size: 1.75rem; font-weight: 700; }
.kpi-label { font-size: 0.85rem; color: #6b7280; }
.panel {
  background: #fff;
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.panel-wide { grid-column: 1 / -1; }
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}
.detail-list { display: grid; grid-template-columns: 120px 1fr; gap: 0.35rem 1rem; }
.detail-list dt { color: #6b7280; font-size: 0.85rem; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th, .data-table td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid #e5e7eb; }
.data-table th { background: #f9fafb; font-weight: 600; }
.btn {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-primary { background: #2563eb; color: #fff; border-color: #2563eb; }
.btn-danger { background: #dc2626; color: #fff; border-color: #dc2626; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.8rem; }
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; align-items: center; }
.filters input, .filters select { padding: 0.4rem 0.6rem; border: 1px solid #d1d5db; border-radius: 6px; }
.stack-form { display: flex; flex-direction: column; gap: 0.5rem; max-width: 320px; margin-bottom: 1rem; }
.stack-form label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.9rem; }
.inline-form { display: inline-flex; gap: 0.35rem; align-items: center; flex-wrap: wrap; }
.alert { padding: 0.75rem 1rem; border-radius: 6px; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-ok { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.badge { padding: 0.15rem 0.5rem; border-radius: 999px; font-size: 0.75rem; }
.badge-ok { background: #d1fae5; color: #065f46; }
.badge-warn { background: #fef3c7; color: #92400e; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 0.75rem; }
.stat-item { text-align: center; padding: 0.5rem; background: #f9fafb; border-radius: 6px; }
.stat-val { display: block; font-weight: 700; font-size: 1.25rem; }
.stat-key { font-size: 0.7rem; color: #6b7280; word-break: break-word; }
.muted { color: #6b7280; font-size: 0.9rem; }
.page-header { display: flex; justify-content: space-between; align-items: center; }
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,.1);
  width: 100%;
  max-width: 360px;
}
.login-card label { display: block; margin-bottom: 1rem; }
.login-card input { width: 100%; padding: 0.5rem; margin-top: 0.25rem; }