.captcha-container { position:relative;display:flex;flex-wrap:wrap;justify-content:center; width:100%;user-select:none;background: #fff;padding:15px;border-radius: 8px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }       
.captcha-stage { position: relative; width: 300px; height: 100px; }
/* Canvas Principal */
#mainCanvas { border-radius: 4px; background: #eee; display: block; }
/* Peça que se move */
#pieceCanvas { position: absolute; top: 0; left: 0; cursor: grab; filter: drop-shadow(0 0 5px rgba(0,0,0,0.5)); }
/* Slider */
.slider-container { margin-top: 15px; width: 100%; }
#slider { width: 100%; cursor: pointer; }

.status { margin-top: 10px; font-weight: bold; height: 20px; }
.success { color: #28a745; }
.error { color: #dc3545; }