.appear-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(.68,-0.55,.27,1.55), transform 0.7s cubic-bezier(.68,-0.55,.27,1.55);
}
.appear-on-scroll.visible {
  opacity: 1;
  transform: none;
}

/* Slide in desde la izquierda */
.slide-left-on-scroll {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.6s cubic-bezier(.6,0,.4,1), transform 0.6s cubic-bezier(.6,0,.4,1);
}
.slide-left-on-scroll.visible {
  opacity: 1;
  transform: none;
}

/* Slide in desde la derecha */
.slide-right-on-scroll {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.6s cubic-bezier(.6,0,.4,1), transform 0.6s cubic-bezier(.6,0,.4,1);
}
.slide-right-on-scroll.visible {
  opacity: 1;
  transform: none;
}

/* Zoom in */
.zoom-in-on-scroll {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.6s cubic-bezier(.6,0,.4,1), transform 0.6s cubic-bezier(.6,0,.4,1);
}
.zoom-in-on-scroll.visible {
  opacity: 1;
  transform: scale(1);
}

/* Fade in */
.fade-in-on-scroll {
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(.6,0,.4,1);
}
.fade-in-on-scroll.visible {
  opacity: 1;
}


.stat-number {
  font-size: 2.3em;
  font-weight: bold;

  letter-spacing: 1px;
  min-width: 48px;
}

/* Zoom-in para fotos */
.zoom-in-on-tab {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.5s, transform 0.5s;
}
.zoom-in-on-tab.tab-visible {
  opacity: 1;
  transform: scale(1);
}

/* Slide-up para videos */
.slide-up-on-tab {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.5s, transform 0.5s;
}
.slide-up-on-tab.tab-visible {
  opacity: 1;
  transform: none;
}

/* Slide-right para instalaciones */
.slide-right-on-tab {
  opacity: 0;
  transform: translateX(48px);
  transition: opacity 0.5s, transform 0.5s;
}
.slide-right-on-tab.tab-visible {
  opacity: 1;
  transform: none;
}