body {font-family: 'Segoe UI', sans-serif;background: transparent;margin: 0;padding: 20px;color: #222;max-width: 600px;margin: auto;}.menu-btn{width:35px;height:25px;position:fixed;top:15px;left:15px;cursor:pointer;z-index:1001;}.menu-btn span{display:block;height:4px;width:100%;background:#111;margin:5px 0;transition:0.3s;border-radius:2px;}.menu-btn.active span:nth-child(1){transform:rotate(45deg) translate(6px,6px);}.menu-btn.active span:nth-child(2){opacity:0;}.menu-btn.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-7px);}.overlay{position:fixed;width:100%;height:100%;background:rgba(0,0,0,0.3);top:0;left:0;display:none;z-index:999;}.side-menu{position:fixed;top:0;left:-250px;width:250px;height:100%;background:#fff;box-shadow:2px 0 8px rgba(0,0,0,0.2);transition:left 0.3s ease;padding-top:70px;z-index:1000;}.side-menu.active{left:0;}.side-menu a{display:block;padding:12px 20px;text-decoration:none;color:#333;border-bottom:1px solid #eee;}.side-menu a:hover{background:#f2f2f2;}h2 {text-align: center;font-size: 1.6rem;margin-bottom: 25px;}input[type="text"], textarea {width: 100%;padding: 12px;font-size: 14px;border: 1px solid #ccc;border-radius: 6px;margin-bottom: 15px;box-sizing: border-box;}textarea { resize: vertical; }button {width: 100%;padding: 12px;background: #007BFF;color: #fff;font-size: 16px;font-weight: 600;border: none;border-radius: 6px;cursor: pointer;transition: background 0.3s ease;margin-top: 5px;}button:hover { background: #0056b3; }.output-box {margin-top: 30px;display: none;animation: fadeIn 0.4s ease;}.output-box p {font-size: 15px;margin: 10px 0 5px;font-weight: 500;}.file-info {background: #f5f5f5;padding: 10px;border-radius: 6px;font-size: 14px;margin-top: 10px;}.player-container {width: 100%;height: 320px;margin-top: 15px;border-radius: 10px;overflow: hidden;background: #000;box-shadow: 0 4px 12px rgba(0,0,0,0.2);}.player-container iframe {width: 100%;height: 100%;border: none;}@keyframes fadeIn {from {opacity: 0;} to {opacity: 1;}}@media screen and (max-width: 480px) {.player-container { height: 200px; }}