/* 커스텀 애니메이션 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* 슬라이드 효과 */
.slide {
  transition: opacity 0.5s ease-in-out;
}

/* 솔루션 카드 호버 효과 */
.solution-card {
  transition: all 0.3s ease;
  opacity: 1;
}

.solution-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 솔루션 카드 초기 상태 (애니메이션 전) */
.solution-card:not(.animate-fade-in) {
  opacity: 0;
  transform: translateY(20px);
}

.solution-card.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* 챗봇 애니메이션 */
#chatWindow {
  transition: all 0.3s ease-in-out;
}

/* 스크롤바 스타일링 */
#chatMessages::-webkit-scrollbar {
  width: 6px;
}

#chatMessages::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

#chatMessages::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 10px;
}

#chatMessages::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* 그라데이션 배경 */
.gradient-bg {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-bg-2 {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-bg-3 {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* 텍스트 그라데이션 */
.gradient-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 네비게이션 바 그림자 효과 */
.nav-shadow {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}