body{margin:0;overflow:hidden}#threejs-container{width:100vw;height:100vh}#crosshair{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:10px;height:10px;pointer-events:none;display:flex;align-items:center;justify-content:center}.line{position:absolute;background-color:#fff}.vertical{width:2px;height:10px}.horizontal{width:10px;height:2px}#controls-box{position:absolute;top:20px;right:20px;padding:15px;background-color:#fffc;border-radius:10px;font-family:Arial,sans-serif;font-size:14px;color:#333;box-shadow:0 0 10px #0000004d}#controls-title{font-weight:700;margin-bottom:10px;font-size:16px;color:#444}#title-screen{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#000c;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#fff;font-family:Arial,sans-serif;font-size:24px}#load-button{padding:10px 20px;margin-top:20px;font-size:18px;background-color:#28a745;color:#fff;border:none;cursor:pointer}#load-button:hover{background-color:#218838}#new-game-button{padding:10px 20px;margin-top:20px;font-size:18px;background-color:#28a745;color:#fff;border:none;cursor:pointer}#new-game-button:hover{background-color:#218838}#block-selector{position:fixed;top:50px;left:20px;width:60px;padding:10px;background-color:#fffc;border-radius:8px;box-shadow:0 4px 12px #0003;font-family:Arial,sans-serif}.block{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;cursor:pointer}.color-dot{width:12px;height:12px;border-radius:50%;margin-right:5px}#confirmation-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background-color:#fff;padding:20px;border-radius:8px;text-align:center}button{margin:10px;padding:8px 16px;cursor:pointer}