body{font-family:Inter,Roboto,Arial,sans-serif;background:#f5f7fb;color:#111}.app{max-width:1000px;margin:20px auto;padding:20px;background:#fff;border-radius:8px;box-shadow:0 6px 18px #0000000f}.controls{display:flex;flex-direction:column;gap:8px}.controls input{padding:6px 8px}.buttons{display:flex;gap:8px;margin-top:6px}button{padding:8px 12px;border-radius:6px;cursor:pointer}.room{margin-top:12px}.videos{display:flex;gap:20px}.doctors-grid{display:flex;flex-wrap:wrap;max-width:600px}.back{margin-bottom:12px}.hint{color:#666;font-size:13px}