html {
  scroll-behavior: smooth;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Typing indicator */
@keyframes typing-dot {
  0%, 60%, 100% { opacity: 0.3; }
  30% { opacity: 1; }
}

.typing-dot {
  animation: typing-dot 1.4s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 50%);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: white;
  border-radius: 8px;
  max-width: 480px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(10px);
  transition: transform 0.2s ease;
}

.modal-backdrop.active .modal-content {
  transform: translateY(0);
}

/* Use-case demo modal — wider */
.modal-content.demo-modal {
  max-width: 720px;
}

/* FAQ animation */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding-top: 0;
  padding-bottom: 0;
}

.faq-answer.open {
  max-height: 500px;
  padding-bottom: 16px;
}

@media (width <= 767px) {
  .modal-content {
    width: 95%;
    max-height: 85vh;
  }

  .modal-content.demo-modal {
    max-width: 95%;
  }
}