:root{--primary-color: #007bff;--bg-color: #202020;--text-color: #ffffff;--header-bg: #333333;--footer-bg: #333333;--border-radius: 4px;--spacing: .5rem;--input-bg: #ffffff;--input-text: #000000}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;margin:0;padding:0;display:flex;flex-direction:column;position:fixed;inset:0;width:100%;height:100%;color:var(--text-color);background-color:var(--bg-color);overflow:hidden}div{background-color:transparent}header{margin:0;background-color:var(--header-bg);padding:var(--spacing);box-shadow:0 2px 4px #00000080;display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing);flex-shrink:0;color:var(--text-color)}header label{font-weight:500;font-size:14px;white-space:nowrap;color:var(--text-color)}select,button,input[type=text]{padding:5px 12px;border:1px solid #d1d5da;border-radius:6px;font-size:14px;background-color:var(--input-bg);color:var(--input-text)}button{cursor:pointer;background-color:#e0e0e0;color:#000;font-weight:500;transition:all .2s}button:hover{background-color:#fff;border-color:#999}button:active{background-color:#ccc}#diagnosticsBtn,#aboutBtn{color:#000;background-color:#e0e0e0;border-color:#ccc}input[type=range]{vertical-align:middle;max-width:100px}main#canvas-container{flex-grow:1;position:relative;overflow:hidden;background-color:#000}canvas{width:100%!important;height:100%!important;display:block}footer{margin:0;background-color:var(--footer-bg);padding:var(--spacing);font-size:14px;font-weight:700;border-top:1px solid #555;flex-shrink:0;color:var(--text-color)}.footer-content{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;width:100%;gap:1rem}.footer-item{display:flex;align-items:center;gap:.5rem}#location{flex-direction:column;align-items:flex-start;font-size:14px;line-height:1.2;width:260px;min-width:260px;overflow:hidden;white-space:nowrap}progress{height:1.2em;width:150px}.loading-spinner:after{content:" ⏳";animation:spin 2s linear infinite;display:inline-block}@media (max-width: 768px){header{padding:.5rem;gap:.5rem}header label{font-size:.8rem}select,button{font-size:.8rem;padding:.2rem .4rem}}@media (max-width: 768px){#penDrop,#drawDrop,#dragMode,#saveSceneBtn,#diagnosticsBtn,#aboutBtn{display:inline-block!important}header label{display:inline-block!important}.control-group{display:flex;align-items:center;gap:.3rem}}dialog{padding:1.5rem;border:1px solid #555;border-radius:8px;box-shadow:0 4px 12px #00000080;max-width:500px;width:90%;font-family:inherit;background-color:#333;color:#fff}dialog::backdrop{background:#0009}dialog h3{margin-top:0;color:#fff;border-bottom:1px solid #555;padding-bottom:.5rem}dialog p{color:#ddd;white-space:pre-wrap}dialog button{background-color:#e0e0e0;color:#000;border:none;padding:.5rem 1rem;border-radius:4px;margin-top:1rem;float:right;cursor:pointer}dialog button:hover{background-color:#fff}