/* Custom styles for StudyZone App */

/* Apply a clean background and modern font to the entire page */
body {
  /* **REVERTED**: Original background color */
  background-color: #f0f2f5;
  font-family: "Inter", sans-serif;
}

/* Custom transition for a smooth page switch between lessons and cart */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.3s ease;
}

.fade-enter,
.fade-leave-to {
  opacity: 0;
}

/* Style for disabled buttons to meet requirements.
  It makes them visually distinct and prevents user interaction.
*/
.disabled-btn {
  cursor: not-allowed;
  opacity: 0.6;
}

/* A simple loading spinner to indicate when data is being fetched */
.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  /* **REVERTED**: Spinner color back to indigo */
  border-left-color: #4f46e5;
  animation: spin 1s ease infinite;
}

/* Smaller spinner for buttons */
.spinner-small {
  border: 3px solid rgba(255, 255, 255, 0.3);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border-left-color: #ffffff;
  animation: spin 1s ease infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}