body {
  margin: 0;
  font-family: 'Noto Sans KR', sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

.back-button-container {
  position: fixed;
  top: 20px;
  right: 30px;
  z-index: 1000;
}

.back-button {
  display: inline-block;
  padding: 10px 20px;
  font-size: 0.9em;
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  transition: background-color 0.3s ease;
}

.back-button:hover {
  background-color: rgba(0, 0, 0, 0.9);
}

header {
  background: url('bmwkorea-image.jpg') no-repeat center center;
  background-size: cover;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.title {
  font-size: 3em;
  color: white;
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.5);
}

.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  padding: 40px;
}

.image-card {
  margin: 24px auto;
  max-width: 800px;
  padding: 12px;
  background-color: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.image-card img {
  max-width: 100%;
  height: auto;
  cursor: pointer;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.image-card img:hover {
  transform: scale(1.02);
}

/* .fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: contain;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 9999;
  margin: 0;
  padding: 0;
} */

.summary-info {
  background-color: #fafafa;
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  padding: 24px 16px;
  margin-bottom: 24px;
}

.summary-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.1em;
  color: #444;
  font-weight: 500;
}

.summary-content p {
  margin: 6px 0;
  line-height: 1.6;
}

/* 모달 배경 */
.modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
}

/* 모달 이미지 */
.modal-content {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 12px;
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.3);
}

/* 닫기 버튼 */
.close-btn {
  position: absolute;
  top: 32px;
  right: 48px;
  font-size: 36px;
  color: white;
  cursor: pointer;
  font-weight: bold;
  z-index: 10000;
  transition: transform 0.2s;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.close-btn:hover {
  transform: scale(1.2);
  background-color: rgba(0, 0, 0, 0.7);
}

/* 확대된 이미지 (전체화면 효과) */
.fullscreen {
  max-width: 95vw;
  max-height: 95vh;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
}

/* 썸네일 확대 커서 */
.zoomable {
  cursor: zoom-in;
}

/* -------------------- 타임라인 섹션 스타일 시작 -------------------- */

.horizontal-timeline-section {
  padding: 60px 0;
  background-color: #eef2f7;
  text-align: center;
}

.horizontal-timeline-section h2 {
  font-size: 2.5em;
  color: #2c3e50;
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
  padding-bottom: 10px;
}

.horizontal-timeline-section h2::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 500px;
  height: 4px;
  background-color: #3498db;
  border-radius: 2px;
}

.timeline-container {
  display: flex;
  justify-content: center; /* 중앙 정렬 */
  align-items: center; /* 세로 중앙 정렬 */
  flex-wrap: wrap; /* 필요시 줄바꿈 */
  gap: 40px; /* 아이템 간 간격 */
  margin: 0 auto 50px auto; /* 상하 여백과 중앙 정렬 */
  max-width: 1400px; /* 최대 너비 확장 */
  padding: 20px; /* 패딩 */
}

/* 웹킷 기반 브라우저 (Chrome, Safari) 스크롤바 스타일 */
.timeline-container::-webkit-scrollbar {
  height: 8px;
}

.timeline-container::-webkit-scrollbar-track {
  background: #c8d8e7;
  border-radius: 10px;
}

.timeline-container::-webkit-scrollbar-thumb {
  background-color: #3498db;
  border-radius: 10px;
  border: 2px solid #c8d8e7;
}

.timeline-item {
  flex: 0 0 450px; /* 아이템 너비 더 확장 */
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  padding: 35px;
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
  position: relative;
  overflow: hidden; /* Ensure content stays within bounds */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.timeline-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.timeline-year {
  font-size: 1.2em;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 15px;
  position: relative;
  padding: 8px 15px 8px 35px;
  background-color: #e74c3c;
  border-radius: 6px;
  display: inline-block;
}

.timeline-year::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 12px; /* 픽셀 단위로 정확한 위치 지정 */
  width: 12px;
  height: 12px;
  background-color: #ffffff;
  border-radius: 50%;
  border: none;
  box-shadow: none;
  transform: none; /* transform 제거 */
}

.timeline-content h3 {
  font-size: 1.8em;
  color: #2c3e50;
  margin-top: 0;
  margin-bottom: 10px;
}

.timeline-content p {
  font-size: 1em;
  line-height: 1.6;
  color: #555;
  margin-bottom: 20px;
}

.timeline-thumb {
  max-width: 100%;
  height: 200px; /* 고정 높이 */
  object-fit: cover; /* 이미지 비율 유지하며 채우기 */
  border-radius: 8px;
  margin-bottom: 15px;
  display: block; /* 이미지 아래 공간 제거 */
}

.read-more {
  display: inline-block;
  padding: 10px 20px;
  background-color: #e74c3c;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s ease, transform 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 0.95em;
  font-weight: 600;
}

.read-more:hover {
  background-color: #c0392b;
  transform: translateY(-2px);
}

/* 특별 이벤트 (10년 근속상) 스타일 */
.timeline-item.special-event {
  border-color: #e74c3c;
  box-shadow: 0 8px 20px rgba(231, 76, 60, 0.2);
}

.timeline-item.special-event .timeline-year {
  color: #ffffff;
  background-color: #e74c3c;
}

.timeline-item.special-event .timeline-year::before {
  /* background-color: #e74c3c;
  box-shadow: 0 0 0 2px #e74c3c; */
}

.timeline-item.special-event .read-more {
  background-color: #e74c3c;
}

.timeline-item.special-event .read-more:hover {
  background-color: #c0392b;
}

/* 스토리 모달 스타일 */
.modal-story {
  background-color: rgba(
    0,
    0,
    0,
    0.7
  ); /* 살짝 투명도를 높여 뒤 배경이 덜 보이게 */
  z-index: 10000; /* 일반 모달보다 더 위로 */
}

.modal-content-story {
  background-color: #fff;
  margin: auto;
  padding: 40px;
  border-radius: 10px;
  width: 80%; /* 모달 너비 조정 */
  max-width: 700px; /* 최대 너비 설정 */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  position: relative;
  max-height: 90vh; /* 최대 높이 설정 */
  overflow-y: auto; /* 내용이 길어지면 스크롤바 생성 */
  animation: fadeIn 0.3s ease-out; /* 부드러운 등장 애니메이션 */
}

.modal-content-story h2 {
  color: #2c3e50;
  font-size: 2em;
  margin-bottom: 20px;
  border-bottom: 2px solid #3498db;
  padding-bottom: 10px;
}

.modal-content-story p {
  font-size: 1.1em;
  line-height: 1.8;
  color: #444;
  margin-bottom: 15px;
}

.modal-content-story img {
  border-radius: 8px;
  margin-top: 15px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* 모바일 반응형 */
@media (max-width: 768px) {
  .horizontal-timeline-section h2 {
    font-size: 2em;
  }

  .timeline-container {
    padding: 10px 0;
    justify-content: center;
  }

  .timeline-item {
    flex: 0 0 88vw;
    max-width: 90vw;
    margin: 14px auto;
    padding: 14px;
  }

  .modal-content-story {
    width: 90%;
    padding: 25px;
  }

  .modal-content-story h2 {
    font-size: 1.6em;
  }

  .modal-content-story p {
    font-size: 0.95em;
  }
}