/* Basic fade-in with no direction (fade-in) */
.fade-in {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--delay, 0s);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Fade-in from left */
.fade-in-left {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--delay, 0s);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Fade-in from right */
.fade-in-right {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--delay, 0s);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Fade-in from up */
.fade-in-up {
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--delay, 0s);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Fade-in from down */
.fade-in-down {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--delay, 0s);
}

.fade-in-down.visible {
  opacity: 1;
  transform: translateY(0);
}