:root{--bg: #0f172a;--card: #1e293b;--fg: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--ok: #22c55e;--bad: #ef4444;--border: #334155;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg)}.app{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}.card{width:100%;max-width:440px;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:1.75rem;box-shadow:0 10px 40px #00000059}.card.presenter{max-width:480px}h1{margin:0 0 .25rem;font-size:1.5rem}.muted{color:var(--muted)}.small{font-size:.8rem}.center{text-align:center}.stack{display:flex;flex-direction:column;gap:1rem;margin-top:1rem}label{display:flex;flex-direction:column;gap:.35rem;font-size:.9rem}input{padding:.65rem .75rem;border-radius:8px;border:1px solid var(--border);background:#0b1220;color:var(--fg);font-size:1rem}button{padding:.7rem 1rem;border-radius:8px;border:none;background:var(--accent);color:#05263a;font-weight:600;font-size:1rem;cursor:pointer}button:disabled{opacity:.6;cursor:default}button.ghost{background:transparent;color:var(--muted);border:1px solid var(--border);font-weight:500}.row{display:flex;align-items:center;gap:.75rem}.between{justify-content:space-between}.error{color:var(--bad)}code{background:#0b1220;padding:.1rem .35rem;border-radius:5px;font-size:.8rem}.qr-frame{position:relative;display:flex;justify-content:center;align-items:center;background:#fff;border-radius:12px;padding:1.25rem;margin:1.25rem 0;min-height:320px}.qr-placeholder{color:#475569}.tick{position:absolute;bottom:8px;right:12px;width:10px;height:10px;border-radius:50%;background:var(--accent)}.tick-0{opacity:.35}.tick-1{opacity:1}.video-frame{position:relative;margin:1.25rem 0;border-radius:12px;overflow:hidden;background:#000;aspect-ratio:3 / 4}.video-frame video{width:100%;height:100%;object-fit:cover}.scan-overlay{position:absolute;top:12%;right:12%;bottom:12%;left:12%;border:3px solid rgba(56,189,248,.85);border-radius:12px;pointer-events:none}.progress{display:flex;align-items:center;gap:.5rem;justify-content:center;margin-bottom:.5rem}.dot{width:14px;height:14px;border-radius:50%;border:2px solid var(--accent);transition:background .2s}.dot.on{background:var(--accent)}.progress-label{margin-left:.5rem;color:var(--muted);font-size:.85rem}.result{text-align:center;padding:1.5rem 0;display:flex;flex-direction:column;gap:1rem;align-items:center}.result .big{font-size:1.25rem;font-weight:600}.result.ok .big{color:var(--ok)}.card.wide{max-width:720px}.ghost-link{color:var(--accent);text-decoration:none;font-size:.9rem}.ghost-link:hover{text-decoration:underline}.block{display:block}.empty{padding:2rem 0}.create-row{margin:1.25rem 0 .5rem}.create-row input{flex:1}.session-list{list-style:none;padding:0;margin:1rem 0 0;display:flex;flex-direction:column;gap:.6rem}.session-item{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 1rem;background:#0b1220;border:1px solid var(--border);border-radius:10px;cursor:pointer;transition:border-color .15s}.session-item:hover{border-color:var(--accent)}.badge{background:#38bdf826;color:var(--accent);border:1px solid rgba(56,189,248,.4);padding:.25rem .6rem;border-radius:999px;font-size:.8rem;white-space:nowrap}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1.25rem;margin:1.25rem 0}@media (max-width: 620px){.detail-grid{grid-template-columns:1fr}}.attendee-panel{background:#0b1220;border:1px solid var(--border);border-radius:12px;padding:1rem;min-height:200px}.panel-title{margin:0 0 .75rem;font-size:1rem}.attendee-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.4rem;max-height:320px;overflow-y:auto}.attendee-list li{display:flex;justify-content:space-between;gap:.75rem;padding:.4rem .5rem;border-bottom:1px solid var(--border)}.attendee-list li:last-child{border-bottom:none}.qr-col{display:flex;flex-direction:column;gap:.6rem}.fullscreen-btn{width:100%}.fs-qr{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}.fs-qr-loading{color:#475569;font-size:1.1rem}