html, body { margin: 0; padding: 0; height: 100%; overflow: hidden;}
.has-canvas #placeholder-text { display: none; }

/* Scrollbar personalizzata */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #404040; border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: #525252; }

/* Stile per gli input range (slider) */
input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 12px;
  width: 12px;
  border-radius: 50%;
  background: #ffffff;
  cursor: pointer;
  margin-top: -5px;
}
input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 2px;
  cursor: pointer;
  background: #404040;
}

/* Stile per i rettangoli interattivi DOM */
.dom-rect {
  position: absolute;
  resize: both;
  overflow: hidden;
  z-index: 20;
  min-width: 40px;
  min-height: 40px;
  border: 1px dashed rgba(255, 255, 255, 0.4);
  transition: opacity 0.2s;
}
.dom-rect:hover { border-color: rgba(255, 255, 255, 0.8); }
.dom-rect::-webkit-scrollbar { width: 18px; height: 18px; }
.dom-rect::-webkit-scrollbar-corner { background: rgba(255,255,255,0.8); cursor: se-resize; border-radius: 3px; }

/* Maniglia di trascinamento dei rettangoli */
.dom-rect-drag {
  width: 100%; height: 100%; cursor: move;
  display: flex; align-items: center; justify-content: center;
}
.dom-rect-drag::after {
  content: '☩'; color: rgba(255,255,255,0.5); font-size: 30px; pointer-events: none;
}