/* Shared chrome injected into every lesson page + the portal.
   Lesson bodies keep their own original styling; this only styles the
   top bar, the auth widget, and the quiz block so it never clashes. */

:root {
  --nabr-ink: #1f2a37;
  --nabr-accent: #0b6e6e;
  --nabr-accent-dark: #084f4f;
  --nabr-bg: #f6f8f8;
  --nabr-card: #ffffff;
  --nabr-border: #e2e8e8;
  --nabr-good: #1f7a44;
  --nabr-bad: #b3261e;
}

/* ---- Top bar ---- */
.nabr-bar {
  position: sticky; top: 0; z-index: 9999;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 18px;
  background: var(--nabr-accent-dark); color: #fff;
  font-family: -apple-system, "Segoe UI", Roboto, Lato, sans-serif;
  box-shadow: 0 1px 6px rgba(0,0,0,.18);
}
.nabr-bar a { color: #fff; text-decoration: none; font-weight: 600; }
.nabr-bar .nabr-home { font-size: 15px; opacity: .95; }
.nabr-bar .nabr-title { font-size: 14px; opacity: .8; }
.nabr-bar .nabr-spacer { flex: 1; }
.nabr-bar .nabr-user { font-size: 13px; opacity: .9; }

/* ---- Portal ---- */
.nabr-portal {
  font-family: -apple-system, "Segoe UI", Roboto, Lato, sans-serif;
  color: var(--nabr-ink); background: var(--nabr-bg);
  margin: 0; padding: 0 0 60px;
}
.nabr-portal header {
  background: linear-gradient(135deg, var(--nabr-accent-dark), var(--nabr-accent));
  color: #fff; padding: 48px 24px 40px; text-align: center;
}
.nabr-portal header h1 { margin: 0 0 8px; font-size: 30px; }
.nabr-portal header p { margin: 0; opacity: .9; }
.nabr-wrap { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.nabr-track { margin-top: 36px; }
.nabr-track h2 { font-size: 22px; color: var(--nabr-accent-dark); margin: 0 0 4px; }
.nabr-track .nabr-blurb { color: #5b6b6b; margin: 0 0 16px; font-size: 14px; }
.nabr-cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.nabr-card {
  display: block; background: var(--nabr-card); border: 1px solid var(--nabr-border);
  border-radius: 12px; padding: 16px 18px; text-decoration: none; color: inherit;
  transition: transform .08s ease, box-shadow .08s ease;
}
.nabr-card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(8,79,79,.12); }
.nabr-card h3 { margin: 0 0 6px; font-size: 16px; color: var(--nabr-accent-dark); }
.nabr-card p { margin: 0; font-size: 13px; color: #5b6b6b; }
.nabr-card .nabr-tag { display:inline-block; margin-top:10px; font-size:11px; font-weight:700;
  color: var(--nabr-accent-dark); background:#e6f2f2; padding:3px 8px; border-radius:20px; }
.nabr-card .nabr-ext { color:#8a9a9a; font-size:11px; }

/* ---- Quiz block ---- */
.nabr-quiz {
  font-family: -apple-system, "Segoe UI", Roboto, Lato, sans-serif;
  max-width: 760px; margin: 40px auto; padding: 24px;
  background: var(--nabr-card); border: 1px solid var(--nabr-border);
  border-radius: 14px; color: var(--nabr-ink);
}
.nabr-quiz h2 { margin: 0 0 6px; color: var(--nabr-accent-dark); }
.nabr-quiz .nabr-sub { color:#5b6b6b; font-size: 13px; margin: 0 0 18px; }
.nabr-identity { background: var(--nabr-bg); border:1px solid var(--nabr-border);
  border-radius: 10px; padding: 14px; margin-bottom: 18px; }
.nabr-identity input[type=email] { width: 100%; padding: 9px 11px; border:1px solid var(--nabr-border);
  border-radius: 8px; font-size: 14px; margin-top: 6px; }
.nabr-q { margin: 0 0 18px; padding-bottom: 14px; border-bottom: 1px dashed var(--nabr-border); }
.nabr-q .nabr-qtext { font-weight: 600; margin-bottom: 8px; }
.nabr-q label { display:block; padding: 7px 10px; border-radius: 8px; cursor: pointer; font-size: 14px; }
.nabr-q label:hover { background: var(--nabr-bg); }
.nabr-btn { background: var(--nabr-accent); color:#fff; border:0; border-radius: 9px;
  padding: 11px 20px; font-size: 15px; font-weight: 700; cursor: pointer; }
.nabr-btn:disabled { opacity:.5; cursor: not-allowed; }
.nabr-result { margin-top: 16px; padding: 14px; border-radius: 10px; font-weight: 600; display:none; }
.nabr-result.pass { background:#e6f4ec; color: var(--nabr-good); display:block; }
.nabr-result.fail { background:#fbe9e7; color: var(--nabr-bad); display:block; }
.nabr-note { font-size: 12px; color:#8a9a9a; margin-top: 12px; }