/*
 * Animations - Subtle
 */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out;
}

/* Page load animation */
main {
  animation: pageLoad 0.3s ease-out;
}

@keyframes pageLoad {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* List item stagger animation */
.list-group-item {
  animation: itemFadeIn 0.3s ease-out backwards;
}

@keyframes itemFadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.list-group-item:nth-child(1) { animation-delay: 0.05s; }
.list-group-item:nth-child(2) { animation-delay: 0.1s; }
.list-group-item:nth-child(3) { animation-delay: 0.15s; }
.list-group-item:nth-child(n+4) { animation-delay: 0.2s; }

/* Loading states */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}