/* Card estilo “ventana” para el visor 3D */
.card-3d{background: #0b1220; border:1px solid rgba(255,255,255,.08);}
.card-3d__header{
  background: linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  border-bottom:1px solid rgba(255,255,255,.08);
}
.dot{width:10px;height:10px;border-radius:999px;display:inline-block;opacity:.9}
.dot--red{background:#ff5f56}
.dot--yellow{background:#ffbd2e}
.dot--green{background:#27c93f}