/* Portfolio List Simple Variation - 아주 심플한 리스트 */
.portfolio-list-simple {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: 3;
}

.portfolio-list-simple-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 15rem);
  width: 100%;
}

/* 좌측: Project List 버튼 + 심플 리스트 */
.portfolio-list-simple-left {
  width: 25%;
  overflow-y: auto;
  padding: calc(var(--space-8) * 3) 3rem 3rem 0;
  height: 100%;
}

.project-list-btn {
  display: block;
  border: none;
  background: none;
  font-size: var(--mm-font-size-3);
  font-weight: 500;
  color: inherit;
  cursor: default;
  opacity: 1;
  transition: opacity 0.2s ease;
  padding:0;
  margin-bottom: var(--space-4);
  position: relative;
  width: fit-content;
}

.project-list-btn::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.25s ease;
}

/* 디테일 로드 시(버튼 활성화) 밑줄 표시 */
.project-list-btn:not(:disabled) {
  cursor: pointer;
  opacity: 1;
}

.project-list-btn:not(:disabled)::after {
  width: 100%;
}

.project-list-btn:not(:disabled):hover {
  opacity: 1;
}

.portfolio-simple-list {
  display: flex;
  flex-direction: column;
}

.portfolio-simple-item {
  padding:0;
  display: block;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  text-align: left;
  width: fit-content;
  position: relative;
  line-height: 1.1;
}

.portfolio-simple-item::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.25s ease;
}

.portfolio-simple-item:hover::after,
.portfolio-simple-item.active::after {
  width: 100%;
}

/* 디테일 보기 시 선택된 항목은 밑줄 제거 */
.portfolio-simple-item.selected::after {
  width: 0;
}

.portfolio-simple-title {
  font-size: var(--mm-font-size-3);
  font-weight: 500;
}

/* 우측: 미리보기 또는 디테일 - 마우스 호버/클릭 시 표시 */
.portfolio-list-simple-right {
  position: relative;
  width: 75%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  will-change: opacity;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.portfolio-list-simple-right.has-hover,
.portfolio-list-simple-right.has-detail {
  opacity: 1;
  visibility: visible;
}

.portfolio-list-simple-right .portfolio-simple-detail {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow-y: auto;
  padding: 2rem;
  scroll-behavior: smooth;
}

.portfolio-list-simple-right.has-detail .portfolio-simple-detail {
  display: block;
}

.portfolio-list-simple-right.has-detail .portfolio-preview {
  display: none;
}

.portfolio-list-simple .portfolio-preview {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
}

.portfolio-list-simple .preview-image-container {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.portfolio-list-simple .preview-image-container::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.06) 0%,
    rgba(255, 255, 255, 0.14) 50%,
    rgba(255, 255, 255, 0.06) 100%
  );
  background-size: 200% 100%;
  transition: opacity 0.12s ease;
}

.portfolio-list-simple .preview-image-container.is-loading::before {
  opacity: 1;
  animation: portfolio-preview-skeleton 1.05s linear infinite;
}

.portfolio-list-simple .preview-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  opacity: 0;
  pointer-events: none;
  will-change: opacity, transform;
  transition: opacity 0.12s ease;
}

.portfolio-list-simple .preview-image:not([src]),
.portfolio-list-simple .preview-image[src=""] {
  display: none;
}

.portfolio-list-simple .preview-image.is-visible {
  opacity: 1;
}

@keyframes portfolio-preview-skeleton {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* 좌측 하단: pd-header-card 데이터 (제목 + overview) - 디테일 보기 시에만 표시 */
.ps-header-data {
  margin-top: var(--space-4);
  display: none;
}

.ps-header-data.visible {
  display: block;
}

.ps-header-data .ps-overview-items {
  display: flex;
  flex-direction: column;
}

.ps-header-data .ps-overview-item {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--mm-font-size-3);
  line-height: 1.4;
}

.ps-header-data .ps-item-value {
  color: var(--color-fg);
  font-weight: 400;
}

/* 이미지 세트 (좌측+여백+우측) - simple variation */
.portfolio-list-simple .pd-image-set {
  display: flex;
  width: 100%;
  margin-bottom: var(--space-6);
}
.portfolio-list-simple .pd-image-set .pd-set-left,
.portfolio-list-simple .pd-image-set .pd-set-right {
  overflow: hidden;
}
.portfolio-list-simple .pd-image-set .pd-set-gap {
  flex: 1;
  min-width: 0;
}
.portfolio-list-simple .pd-image-set img {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}
@media (max-width: 900px) {
  .portfolio-list-simple .pd-image-set {
    flex-direction: column;
    gap: var(--space-1);
  }
  .portfolio-list-simple .pd-image-set .pd-set-left,
  .portfolio-list-simple .pd-image-set .pd-set-right {
    flex: 0 0 auto !important;
    width: 100% !important;
  }
  .portfolio-list-simple .pd-image-set .pd-set-gap {
    display: none;
  }
}

/* 포트폴리오 리스트 ↔ 상세 전환 페이드 트랜지션 */
.portfolio-preview,
.portfolio-simple-detail,
.portfolio-simple-list,
.ps-header-data {
  transition: opacity 0.25s ease;
}

.portfolio-preview.portfolio-fade-out,
.portfolio-simple-detail.portfolio-fade-out,
.portfolio-simple-list.portfolio-fade-out,
.ps-header-data.portfolio-fade-out {
  opacity: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-preview,
  .portfolio-simple-detail,
  .portfolio-simple-list,
  .ps-header-data {
    transition: none;
  }
}

/* 반응형 */
@media (max-width: 991px) {
  .portfolio-list-simple {
    height: auto;
  }
  .portfolio-list-simple-container {
    flex-direction: column;
  }

  .portfolio-list-simple-left {
    width: 100%;
    height: fit-content;
    padding: var(--header-height) var(--space-4) 2rem;
  }

  .portfolio-list-simple-right {
    width: 100%;
    padding: 0 var(--space-4) 3rem;
  }

  .portfolio-list-simple-right.has-detail {
    min-height: 50vh;
  }

  /* 모바일: 디테일 영역이 absolute면 부모 높이가 0이 되어 안 보임 → relative로 변경 */
  .portfolio-list-simple-right .portfolio-simple-detail {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    padding: 1rem 0;
  }

  .portfolio-simple-item {
    margin-bottom: var(--space-1);
  }
}

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

.portfolio-list-simple.loading::after {
  content: 'Loading...';
  font-size: var(--mm-font-size-3);
  color: #6c757d;
}

.portfolio-list-simple.empty::after {
  content: 'No project found.';
  font-size: var(--mm-font-size-3);
  color: #6c757d;
}