/* StudyNest Statistics interactive additions — preserves existing lesson design */
.stats-lab{margin-top:1.5rem;padding:1.25rem;border:1px solid rgba(79,143,145,.28);border-radius:18px;background:rgba(255,255,255,.55)}
.stats-lab h3{margin-top:0}.stats-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1rem;margin:1rem 0}
.stats-control{display:flex;flex-direction:column;gap:.4rem}.stats-control label{font-weight:700}.stats-control input,.stats-control select,.stats-control textarea{width:100%;box-sizing:border-box;padding:.7rem;border:1px solid #b9c7cf;border-radius:10px;font:inherit;background:#fff}
.stats-control input[type=range]{padding:0}.stats-actions{display:flex;gap:.7rem;flex-wrap:wrap;margin:.8rem 0}.stats-btn{border:0;border-radius:999px;padding:.7rem 1rem;font:inherit;font-weight:700;cursor:pointer;background:#4f8f91;color:white}.stats-btn.secondary{background:#eef4f4;color:#243b53;border:1px solid #aac4c5}.stats-btn:focus-visible{outline:3px solid #243b53;outline-offset:2px}
.stats-output{padding:1rem;border-radius:12px;background:#f5f9f9;margin-top:1rem;line-height:1.65}.stats-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:.75rem;margin:1rem 0}.stats-metric{padding:.8rem;border-radius:12px;background:#fff;border:1px solid #d7e4e5;text-align:center}.stats-metric strong{display:block;font-size:1.35rem;color:#2e6f72}
.stats-canvas{width:100%;height:auto;min-height:260px;background:#fff;border:1px solid #d7e4e5;border-radius:14px}.stats-table{width:100%;border-collapse:collapse;margin:1rem 0;background:#fff}.stats-table th,.stats-table td{border:1px solid #d7e4e5;padding:.55rem;text-align:center}.stats-table th{background:#eef4f4}.stats-pie{width:min(330px,85vw);aspect-ratio:1;border-radius:50%;margin:1rem auto;border:8px solid white;box-shadow:0 0 0 1px #d7e4e5}.stats-legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.5rem}.stats-chip{padding:.5rem .7rem;border-radius:999px;background:#eef4f4;text-align:center}.stats-feedback.good{background:#e9f7ef}.stats-feedback.bad{background:#fff1ee}.stats-note{font-size:.94rem;color:#52616b}.tally{font-family:monospace;letter-spacing:.12em}.pictogram-row{display:grid;grid-template-columns:110px 1fr;gap:.7rem;align-items:start;margin:.5rem 0}.pictogram-symbols{font-size:1.5rem;letter-spacing:.12em;word-break:break-word}.stats-question{padding:.9rem;border:1px solid #d7e4e5;border-radius:12px;margin:.7rem 0;background:#fff}
@media(max-width:600px){.stats-lab{padding:.9rem}.stats-table{font-size:.88rem}.pictogram-row{grid-template-columns:85px 1fr}.stats-actions{flex-direction:column}.stats-btn{width:100%}}