.app{position:relative;width:100vw;height:100vh}.toggle-button{position:absolute;bottom:20px;left:50%;transform:translate(-50%);padding:12px 24px;font-size:16px;font-weight:600;color:#fff;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;border-radius:8px;cursor:pointer;box-shadow:0 4px 15px #0003;transition:all .3s ease;z-index:1000}.toggle-button:hover{transform:translate(-50%) translateY(-2px);box-shadow:0 6px 20px #0000004d}.toggle-button:active{transform:translate(-50%) translateY(0);box-shadow:0 2px 10px #0003}