/* ========== Screen Transitions ========== */
.screen {
  animation: none;
}

.screen.fade-in {
  animation: fadeSlideIn 0.4s ease forwards;
}

.screen.fade-out {
  animation: fadeSlideOut 0.3s ease forwards;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeSlideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-30px);
  }
}

/* ========== Option Card Tap ========== */
.option-card {
  transition: all 0.2s ease, transform 0.1s ease;
}

.option-card:active {
  transform: scale(0.97);
}

/* ========== Button Pulse (Start) ========== */
.btn-primary.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(124, 92, 252, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(124, 92, 252, 0); }
  100% { box-shadow: 0 0 0 0 rgba(124, 92, 252, 0); }
}

/* ========== Stagger Children ========== */
.stagger-in > * {
  opacity: 0;
  transform: translateY(12px);
  animation: staggerItem 0.4s ease forwards;
}

.stagger-in > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-in > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-in > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-in > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-in > *:nth-child(5) { animation-delay: 0.25s; }

@keyframes staggerItem {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== Chat Message Entrance ========== */
.chat-message {
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* ========== Conclusion Card ========== */
.chat-conclusion {
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ========== Result Card Entrance ========== */
.result-card {
  animation: resultSlideUp 0.6s ease forwards;
}

@keyframes resultSlideUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ========== DNA Bar Animation ========== */
.dna-bar-fill {
  transition: width 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ========== Avatar Float ========== */
.ai-avatar-badge {
  animation: float 3s ease-in-out infinite;
}

.ai-avatar-badge:nth-child(2) {
  animation-delay: 0.5s;
}

.ai-avatar-badge:nth-child(3) {
  animation-delay: 1s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ========== Loading Text Transition ========== */
.loading-text {
  transition: opacity 0.4s ease;
}

.loading-text.switching {
  opacity: 0;
}

/* ========== Share Button Pop ========== */
.share-area {
  animation: sharePopIn 0.5s ease forwards;
  animation-delay: 0.3s;
  opacity: 0;
}

@keyframes sharePopIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}