:root{--bg: #f2f6fb;--surface: #ffffff;--surface-2: #eef3fb;--text: #14213d;--muted: #4a5568;--primary: #1d4ed8;--danger: #b91c1c;--border: #d8e1ef}*{box-sizing:border-box}body{margin:0;font-family:Avenir Next,Trebuchet MS,Verdana,sans-serif;background:radial-gradient(circle at top right,#dbe8ff,var(--bg) 45%);color:var(--text)}.page{max-width:1100px;margin:0 auto;padding:1rem;display:grid;gap:1rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:1rem;box-shadow:0 10px 20px #00235a0f}.hero{text-align:center}.grid{display:grid;gap:1rem}.two-col{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.session-grid{grid-template-columns:1.4fr 1fr}.room-header{display:flex;justify-content:space-between;align-items:center;gap:1rem}.invite{display:grid;justify-items:center;gap:.5rem}label{display:grid;gap:.3rem;margin-bottom:.75rem;color:var(--muted)}.toggle-label{display:flex;align-items:center;gap:.5rem;color:var(--text)}input,textarea,button{font:inherit}input,textarea{border:1px solid var(--border);border-radius:10px;padding:.6rem;background:#fff}button{border:none;border-radius:10px;padding:.6rem .9rem;background:var(--primary);color:#fff;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.inline-button{margin-left:.5rem;padding:.2rem .45rem;font-size:.85rem}.simple-list{margin:0;padding-left:1.2rem;display:grid;gap:.4rem}.reveal-panel{border:1px solid var(--border);border-radius:12px;background:var(--surface-2);padding:.75rem;margin-bottom:1rem}.active-question{border:1px solid var(--primary);border-radius:12px;padding:.6rem;background:#eff6ff}.actions{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:.5rem}.question-form{margin-bottom:1rem}.error{color:var(--danger);font-weight:600}.status-online{color:#0f766e}.status-offline{color:var(--danger)}.narrow{max-width:480px;margin:2rem auto}@media (max-width: 900px){.session-grid{grid-template-columns:1fr}.room-header{flex-direction:column;align-items:flex-start}}