:root{--navy:#152a3a;--teal:#16b8a6;--pale:#eaf7f4;--orange:#f5a623;--ink:#17232c;--muted:#6c7e89}*{box-sizing:border-box}body{margin:0;background:#f5f8f8;color:var(--ink);font-family:Arial,system-ui,sans-serif}.topbar{height:68px;background:var(--navy);color:white;display:flex;align-items:center;justify-content:space-between;padding:0 28px}.brand{font-weight:800;letter-spacing:.12em;color:var(--teal)}.status{font-size:12px;letter-spacing:.1em}.classroom{display:grid;grid-template-columns:minmax(0,1fr) 290px;min-height:calc(100vh - 68px);gap:18px;padding:18px}.stage{min-width:0}.slide-wrap{position:relative;background:#0c1b26;border-radius:16px;overflow:hidden;box-shadow:0 12px 40px #152a3a22;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center}.slide-wrap img{width:100%;height:100%;object-fit:contain}.slide-label{position:absolute;right:16px;bottom:12px;background:#152a3acc;color:white;border-radius:99px;padding:7px 12px;font-size:12px}.voice-status{display:flex;gap:18px;padding:13px 2px;color:var(--muted);font-size:13px}.voice-status span:first-child{color:var(--navy);font-weight:700}.controls{display:flex;flex-wrap:wrap;gap:9px;padding:8px 0}.controls button{border:1px solid #cddbdc;background:white;color:var(--navy);padding:12px 14px;border-radius:9px;font-weight:700;cursor:pointer}.controls button:hover{border-color:var(--teal)}.controls .primary,.controls #askKrakor{background:var(--teal);color:white;border-color:var(--teal)}.controls button:disabled{opacity:.45;cursor:not-allowed}.sidebar{background:white;border-radius:16px;padding:20px;box-shadow:0 8px 30px #152a3a12}.sidebar h2{font-size:12px;letter-spacing:.12em;color:var(--muted);margin:4px 0 13px}.person{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid #edf1f1}.person small{color:var(--muted)}.queue{min-height:40px;color:var(--orange);font-size:14px}.meta{border-top:1px solid #e5eeee;margin-top:20px;padding-top:15px;display:grid;gap:11px;font-size:11px;color:var(--muted)}.meta b{display:block;color:var(--navy);font-size:13px;margin-top:2px}.muted{color:var(--muted)}.question{min-height:24px;margin-top:8px;color:var(--teal);font-weight:700}.hidden{display:none!important}.video{width:100%;border-radius:10px;margin-top:18px;background:#07131c}.landing{max-width:680px;margin:15vh auto;padding:40px;text-align:center}.landing h1{font-size:48px;color:var(--navy)}.landing p{font-size:20px}.landing .muted{font-size:14px}@media(max-width:800px){.topbar{padding:0 16px}.classroom{display:flex;flex-direction:column;padding:10px}.sidebar{order:2}.slide-wrap{border-radius:10px}.voice-status{font-size:11px;gap:8px;flex-wrap:wrap}.controls button{flex:1 1 42%;padding:11px 8px;font-size:11px}.landing h1{font-size:34px}}