/* 포트폴리오 리스트 페이지 스타일 */
.portfolio-list {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.portfolio-list-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 15rem);
  /* 하단 네비게이션 높이 제외 */
  padding: var(--header-height) 2rem var(--footer-height);
  width: 100%;
  gap: 1rem;
}

/* 좌측 영역 (25%) */
.portfolio-list-left {
  width: 25%;
  overflow-y: auto;
  padding: 2rem;
  height: 100%;
}

/* 검색바 스타일 */
.search-container {
  position: relative;
  margin-bottom: 2rem;
}

.search-container h4 {
  margin: 0 0 0.25rem 0;
  font-size: 1rem;
  font-weight: 700
}

.search-input-container {
  display: flex;
  gap: 0.5rem;
  align-items: center
}

.search-input {
  width: 100%;
  padding: 0.75rem 2.5rem 0.75rem .75rem;
  border: none;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  outline: none;
  background: transparent;
  border-bottom: 1px solid #e9ecef;
}

.search-input:focus {
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.search-input::placeholder {
  color: #6c757d;
  opacity: 0.7;
}

.search-icon {
  color: #6c757d;
  font-size: 1rem;
  pointer-events: none;
}

/* 필터 버튼 스타일 */
.filter-buttons {
  display: flex;
  gap: 1rem;
  margin-top: .5rem;
}

.filter-btn {
  padding: 0;
  border: none;
  background-color: transparent;
  color: #6c757d;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-btn:hover {
  color: var(--color-accent);
}

.filter-btn.active {
  font-weight: 700;
}

.year-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.year-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.year-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-fg);
  margin: 0;
}

.portfolio-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.portfolio-item {
  padding: 0 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  user-select: none;
  border:none;
}
.portfolio-item.active::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.portfolio-item-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.portfolio-item-title {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--color-fg);
  margin: 0;
  line-height: 1.4;
}

.portfolio-item-summary {
  font-size: 0.875rem;
  color: #6c757d;
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 우측 영역 (75%) */
.portfolio-list-right {
  width: 75%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-preview {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-image-container {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.preview-image-container:hover {}

.preview-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.preview-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
      rgba(0, 0, 0, 0.8) 0%,
      rgba(0, 0, 0, 0.4) 50%,
      rgba(0, 0, 0, 0.1) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
  padding: 2rem;
  color: #ffffff;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.preview-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.25rem 0;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.preview-description {
  font-size: 1rem;
  line-height: 1.1;
  margin: 0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  max-width: 80%;
}

/* 반응형 디자인 */
@media (max-width: 1024px) {
  .portfolio-list-container {
    flex-direction: column;
  }

  .portfolio-list-left {
    width: 100%;
    height: 100vh;
    border-right: none;
    border-bottom: 1px solid #e9ecef;
  }

  .portfolio-list-right {
    width: 100%;
    height: 60%;
  }

  .preview-image-container {
    max-height: 400px;
  }

  .preview-title {
    font-size: 1.5rem;
  }

  .preview-description {
    font-size: 1rem;
  }
}

@media (max-width: 768px) {
  .portfolio-list-container {
    padding: var(--header-height) 0 0;
  }

  .portfolio-list-left {
    padding: 1rem;
  }

  .portfolio-list-right {
    padding: 1rem;
    display: none;
  }

  .search-container {
    margin-bottom: 1.5rem;
  }

  .search-input {
    font-size: 0.85rem;
  }

  .filter-buttons {
    margin-top: 0.75rem;
  }

  .filter-btn {
    font-size: 0.75rem;
  }

  .year-title {
    font-size: .8rem;
  }

  .portfolio-item {
    padding: 0;
  }

  .portfolio-item.active::before {
    border: none;
    background-color: transparent;
  }

  .portfolio-item-title {
    font-size: 0.8rem;
  }

  .portfolio-item-summary {
    font-size: 0.8rem;
  }

  .preview-overlay {
    padding: 1.5rem;
  }

  .preview-title {
    font-size: 1.25rem;
  }

  .preview-description {
    font-size: 0.9rem;
  }
}

/* 스크롤바 스타일링 */
.portfolio-list-left::-webkit-scrollbar {
  width: 6px;
}

.portfolio-list-left::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 3px;
}

.portfolio-list-left::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

.portfolio-list-left::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

/* 로딩 상태 */
.portfolio-list.loading {
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-list.loading::after {
  content: '포트폴리오를 불러오는 중...';
  font-size: 1.125rem;
  color: #6c757d;
}

/* 빈 상태 */
.portfolio-list.empty {
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-list.empty::after {
  content: '포트폴리오가 없습니다.';
  font-size: 1.125rem;
  color: #6c757d;
}

/* 검색 결과 없음 */
.no-results {
  text-align: center;
  padding: 2rem;
  color: #6c757d;
}

.no-results p {
  margin: 0.5rem 0;
  font-size: 0.9rem;
}

.no-results p:first-child {
  font-weight: 600;
  font-size: 1rem;
}