/* Phase 19.1: scoped presentation and helper styles only. */
#teacherSlide img[src*="pzb-logo"],#teacherSlide img[src*="pzb-welcome"],#teacherSlide .scene-watermark{display:none!important}
#pzb-mike19{position:fixed;right:18px;bottom:14px;z-index:30;display:flex;flex-direction:column;align-items:flex-end;pointer-events:none;max-width:150px}
#pzb-mike19[hidden],#pzb-mike19 img[hidden],.pzb-v19-overlay[hidden],#pzb-lasi-video19[hidden]{display:none!important}
#pzb-mike19 button{pointer-events:auto;border:1px solid #abc3b6;background:#f5efdf;border-radius:20px;padding:7px 12px;color:#1b4944;cursor:pointer}
#pzb-mike19 img{width:125px;height:125px;object-fit:contain;pointer-events:none}
.pzb-v19-overlay{position:fixed;inset:0;z-index:3000;display:grid;place-items:center}
.pzb-v19-shade{position:absolute;inset:0;background:#102c2ab8}
.pzb-v19-panel{position:relative;width:min(950px,95vw);max-height:90vh;overflow:auto;background:#f8f4e9;padding:25px;border-radius:18px;box-shadow:0 20px 55px #0005}
.pzb-v19-panel header{display:flex;justify-content:space-between;gap:15px;margin-bottom:18px}
.pzb-v19-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.pzb-v19-video{color:#183f3b;text-decoration:none;background:#fff;border-radius:12px;padding:16px}
@media(prefers-reduced-motion:reduce){#pzb-mike19 img{display:none!important}}