/* AI Essentials Learning — design tokens mirrored from the main site's
   design system (same --blue-electric / --ink-* / --font-display scale),
   so the LMS reads as first-party, not a bolted-on separate product. */

:root {
  --blue-electric: #1A22FF;
  --navy-deep: #08125C;
  --navy-900: #050B36;
  --white: #F9FAFC;
  --paper: #FFFFFF;
  --ink-900: #060814;
  --ink-700: #1B1E33;
  --ink-500: #4A4F6A;
  --ink-300: #8C90A8;
  --line: #E4E6F0;
  --line-strong: #C9CCDC;
  --orange-deploy: #FF6A1A;
  --lime-signal: #D8FF32;
  --red-editorial: #FF3B30;
  --blue-700: #141AC7;
  --surface-page: var(--white);
  --surface-card: var(--paper);
  --surface-sunken: #F0F2F8;
  --font-display: "Sora", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --radius-md: 10px;
  --radius-lg: 16px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--surface-page);
  color: var(--ink-900);
  line-height: 1.5;
}

a { color: var(--blue-electric); text-decoration: none; }
a:hover { color: var(--blue-700); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ── Auth (login) ── */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy-900);
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.auth-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--ink-500);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.auth-title { font-family: var(--font-display); font-size: 24px; font-weight: 800; margin-bottom: 6px; }
.auth-sub { color: var(--ink-500); font-size: 14px; margin-bottom: 24px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--ink-700); }
.field input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  font-size: 14.5px;
  outline: none;
}
.field input:focus { border-color: var(--blue-electric); box-shadow: 0 0 0 3px rgba(26, 34, 255, 0.12); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 14.5px;
  cursor: pointer;
  border: none;
  width: 100%;
}
.btn-primary { background: var(--blue-electric); color: #fff; }
.btn-primary:hover { background: var(--blue-700); }
.btn-secondary { background: var(--surface-sunken); color: var(--ink-900); margin-top: 10px; }
.auth-error { background: #FFF1F0; color: var(--red-editorial); padding: 10px 14px; border-radius: var(--radius-md); font-size: 13px; margin-bottom: 16px; }
.auth-divider { text-align: center; color: var(--ink-300); font-size: 12px; margin: 18px 0; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Admin shell ── */
.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.admin-brand { font-family: var(--font-display); font-weight: 800; font-size: 16px; }
.admin-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.admin-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-700);
}
.admin-nav a:hover, .admin-nav a.is-active { background: var(--surface-sunken); color: var(--blue-electric); }
.admin-user { display: flex; align-items: center; gap: 12px; font-size: 13.5px; color: var(--ink-500); }
.admin-body { padding: 32px 24px; max-width: 1120px; margin: 0 auto; }
.page-heading { font-family: var(--font-display); font-size: 26px; font-weight: 800; margin-bottom: 20px; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.kpi-card { background: var(--surface-sunken); border-radius: var(--radius-lg); padding: 20px; }
.kpi-card .kpi-label { font-size: 12.5px; color: var(--ink-500); font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.kpi-card .kpi-value { font-family: var(--font-display); font-size: 30px; font-weight: 800; margin-top: 6px; }

.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 20px; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table th { color: var(--ink-500); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 700; background: var(--surface-sunken); color: var(--ink-700); }
.badge-active { background: rgba(216, 255, 50, 0.35); color: #4a5a00; }
.empty-state { text-align: center; padding: 48px 24px; color: var(--ink-500); }
.pagination { display: flex; gap: 8px; margin-top: 16px; }
.pagination a { padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; }
.alert-success { background: #ECFDF5; color: #065F46; padding: 10px 14px; border-radius: var(--radius-md); font-size: 13px; margin-bottom: 16px; }

@media (max-width: 640px) {
  .admin-topbar { flex-direction: column; align-items: flex-start; gap: 10px; }
  .admin-body { padding: 20px 16px; }
}