html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background-color:#05060a}.splash-container{width:100%;height:100%;margin:0;display:flex;justify-content:center;align-items:center;background:radial-gradient(circle at center,#1b1d24,#05060a);color:#fff;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;overflow:hidden;position:relative}canvas{width:100%;height:100%;cursor:grab}canvas:active{cursor:grabbing}#ui-container{position:absolute;top:20px;left:20px;z-index:10;background:#fffc;padding:15px;border-radius:12px;backdrop-filter:blur(20px);border:1px solid rgba(0,0,0,.05);box-shadow:0 10px 30px #0000000d;min-width:220px;color:#333}.ui-controls{display:flex;flex-direction:column;gap:15px}.checkbox-label{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:14px}.slider-group{display:flex;flex-direction:column;gap:5px}.slider-group label{font-size:12px;color:#aaa}input[type=range]{width:100%}.slider-value{font-size:12px;text-align:right;color:#0fc}#howto-container{position:absolute;bottom:20px;left:20px;z-index:10;font-size:11px;color:#0006;display:flex;flex-direction:column;gap:4px;font-weight:500;text-transform:uppercase;letter-spacing:.5px}.error-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#f44;font-weight:700;z-index:100}#gui-container{position:absolute;top:20px;right:20px;z-index:20}.github-icon{position:absolute;bottom:20px;right:20px;font-size:24px;color:#ffffff80;transition:color .3s}.github-icon:hover{color:#fff}