#app{display:flex}button{min-width:130px;border-radius:8px;border:1px solid #1a1a1a;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#f9f9f9;cursor:pointer;transition:border-color .25s}input{border-radius:8px;border:1px solid #1a1a1a;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;transition:border-color .25s}button:hover{background-color:#ddd}button:active{background-color:#ccc}#app .left-side{margin:10px;padding:10px}#app .right-side .waiting{margin:10px;padding:10px;display:flex}#app .right-side{display:flex;margin:10px;padding:10px;flex-wrap:wrap}#app button,#app input{margin:10px;padding:10px}#app h3{padding:0 10px}#app .button-on{background-color:#079eff;color:#fff}#app .right-side video{height:300px!important;max-width:400px;margin:10px;border-radius:4px;aspect-ratio:16/9}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;background:#f5f5f5}.container{display:flex;flex-direction:column;min-height:100vh;max-width:1200px;margin:0 auto;padding:16px}.left-side{background:#fff;padding:20px;border-radius:12px;box-shadow:0 2px 10px #0000001a;margin-bottom:20px;order:2}.right-side{flex:1;background:#222;border-radius:12px;overflow:hidden;position:relative;min-height:400px;margin-bottom:20px;order:1}video{width:100%;height:100%;object-fit:cover;border-radius:8px}.device-selector{margin:15px 0;padding:10px;background:#f8f9fa;border-radius:8px;border:1px solid #e9ecef}.device-selector label{display:block;margin-bottom:8px;font-weight:600;color:#333}.device-selector select{width:100%;padding:10px 12px;border:2px solid #e9ecef;border-radius:6px;background:#fff;font-size:14px;transition:border-color .3s}.device-selector select:focus{outline:none;border-color:#4a90e2}.waiting{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:1.2rem;text-align:center;padding:20px;background:#000000b3;border-radius:10px}button{padding:12px 20px;border:none;border-radius:8px;background:#4a90e2;color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:all .3s;text-align:center}button:hover{background:#357abd;transform:translateY(-2px);box-shadow:0 4px 12px #00000026}button:active{transform:translateY(0)}button[disabled]{background:#ccc;cursor:not-allowed;transform:none!important}input{width:100%;padding:12px;margin:10px 0 20px;border:2px solid #e9ecef;border-radius:8px;font-size:14px;transition:border-color .3s}input:focus{outline:none;border-color:#4a90e2}h3{margin:20px 0 10px;color:#333;font-size:16px}@media(max-width:768px){.container{padding:10px}.left-side{padding:15px;order:2}.right-side{min-height:300px;order:1}button{padding:10px 15px;font-size:13px}h3{font-size:15px}.waiting{font-size:1rem;padding:15px}video{max-height:50vh}}@media(max-width:480px){.container{padding:8px}.left-side{padding:12px}button{padding:12px;font-size:14px}.device-selector select{font-size:13px;padding:8px 10px}}