.category-nav{display:flex;gap:.5rem;flex:1;align-items:flex-end;overflow:visible!important;scrollbar-width:none;-ms-overflow-style:none;position:relative}.category-nav::-webkit-scrollbar{display:none}.category-btn{position:relative;padding:var(--spacing-md) var(--spacing-lg);background-color:transparent;border:none;color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);border-bottom:3px solid transparent;white-space:nowrap;font-weight:500;font-size:1rem;margin-bottom:0;overflow:visible!important}.category-btn:hover{background-color:rgba(157,78,221,.1);border-bottom-color:var(--accent-purple);margin-top:calc(-1 * var(--nav-top-pad,var(--spacing-md)) - 18px);padding-top:calc(var(--spacing-md) + var(--nav-top-pad,var(--spacing-md)) + 18px);margin-bottom:calc(-1 * var(--nav-bottom-pad,0px) - 4px);z-index:2500;position:relative}.category-btn:hover::before{content:'';position:absolute;top:-18px;left:0;right:0;height:18px;background-color:rgba(157,78,221,.1);z-index:-1}.category-btn.active{background-color:rgba(157,78,221,.15);border-bottom-color:var(--accent-purple);margin-top:calc(-1 * var(--nav-top-pad,var(--spacing-md)) - 15px);padding-top:calc(var(--spacing-md) + var(--nav-top-pad,var(--spacing-md)) + 15px);margin-bottom:calc(-1 * var(--nav-bottom-pad,0px) - 4px);z-index:2500}.category-btn::before{content:'';display:inline-block;width:1.32em;height:1.32em;margin-right:.42rem;vertical-align:-.12em;background-image:url('../Image_folder/%E5%A4%A2%E6%B0%B8%E8%A8%AD%E8%A8%88-%E8%B3%87%E6%96%99%E5%A4%BE%E5%9C%96.png');background-repeat:no-repeat;background-position:center;background-size:contain}.dropdown-menu{display:block;position:absolute;top:calc(100% + 12px);left:0;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:0 8px 24px rgba(0,0,0,.4);min-width:250px;max-width:400px;z-index:2000;padding:var(--spacing-sm);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(6px);transition:opacity .1s,transform .1s}.dropdown-menu.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);transition-duration:.2s,.2s;transition-delay:0s,0s}.dropdown-item{padding:var(--spacing-md);cursor:pointer;transition:all var(--transition-fast);border-radius:var(--radius-sm);color:var(--text-primary);position:relative;border-bottom:1px solid var(--border-color);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-item:last-child{border-bottom:none}.dropdown-item:hover{background-color:rgba(157,78,221,.1);color:#fff!important}.dropdown-item.active{background-color:rgba(157,78,221,.2);color:#fff}.sub-subcategory-dropdown{display:block;position:absolute;top:0;left:calc(100% + .5rem);background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:0 8px 24px rgba(0,0,0,.4);min-width:200px;max-width:300px;z-index:2100;padding:var(--spacing-sm);opacity:0;visibility:hidden;pointer-events:none;transform:translateX(6px);transition:opacity .1s,transform .1s}.sub-subcategory-dropdown.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(0);transition-duration:.2s,.2s;transition-delay:0s,0s}.btn{padding:.75rem 1.5rem;border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:.25rem}.btn-primary{background:linear-gradient(135deg,var(--accent-purple) 0,var(--accent-pink) 100%);color:var(--text-primary)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(157,78,221,.4)}.btn-secondary{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:rgba(157,78,221,.1);border-color:var(--accent-purple);transform:translateY(-1px)}.btn:focus{outline:2px solid var(--accent-purple);outline-offset:2px}.btn:active{transform:translateY(1px) scale(.97);box-shadow:none!important}.search-input:hover{border-color:var(--border-light)}.card:active{transform:translateY(-2px) scale(.99)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--spacing-lg);margin-top:1.75rem}#content-area{position:relative}#content-area.content-swap-active{animation:.32s contentSwapFade}@keyframes contentSwapFade{0%{opacity:0;transform:translateY(8px)}100%{opacity:1;transform:translateY(0)}}.card{background-color:var(--bg-secondary);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;transition:all var(--transition-normal);box-shadow:0 2px 8px rgba(0,0,0,.2);position:relative;display:flex;flex-direction:column}.card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(157,78,221,.3)}.card:focus{outline:2px solid var(--accent-purple);outline-offset:2px}.card-image{width:100%;aspect-ratio:1/1;object-fit:contain;background-color:#000;display:block}.card-content{padding:var(--spacing-md);background:var(--bg-secondary);display:flex;flex-direction:column;gap:.5rem}.card-title{font-size:1.125rem;font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-mobile-title{display:none}.card-date{font-size:.875rem;color:var(--text-secondary)}.card-subcategory{display:inline-flex;align-items:center;flex:0 1 auto;min-width:0;margin:0;font-size:.74rem;line-height:1.25;font-weight:600;letter-spacing:.04em;color:rgba(233,201,255,.78);text-shadow:0 0 10px rgba(157,78,221,.18);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-subcategory::before{content:"??嚗?;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 700;
  margin-right: 0.12rem;
  flex: 0 0 auto;
}

.card-mobile-category {
  display: none;
}

body.root-overview-view .card-date {
  display: none !important;
}

body.preview-mobile .card {
  height: auto;
  min-height: 350px;
}

body.preview-mobile .card-mobile-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1rem 0.75rem;
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

body.preview-mobile .card-content {
  flex: 1 1 auto;
  min-height: 0;
}

body.preview-mobile .card-content .card-title {
  display: none;
}

body.preview-mobile .card-subcategory {
  display: none !important;
}

body.preview-mobile .card-mobile-category {
  display: inline-flex !important;
  align-items: center;
  flex: 0 1 auto;
  min-width: 0;
  margin: 0;
  font-size: 0.74rem;
  line-height: 1.25;
  font-weight: 600;
  color: rgba(233, 201, 255, 0.78);
  text-shadow: 0 0 10px rgba(157, 78, 221, 0.18);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

body.preview-mobile .card-mobile-category::before {
  content: "分類：";
  color: rgba(255, 255, 255, 0.9);
  font-weight: 700;
  margin-right: 0.12rem;
  flex: 0 0 auto;
}

body.preview-mobile .card-date {
  order: 3;
}

body.preview-mobile.root-overview-view .card-date {
  display: none !important;
}

body.preview-mobile .card-action-row {
  order: 4;
  display: flex;
  width: 100%;
  margin-top: auto;
  padding-top: 0.35rem;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

body.preview-mobile .card-view-all-btn {
  font-size: 0.78rem;
  padding: 0.34rem 0.72rem;
  min-height: 1.9rem;
  opacity: 1;
}

.card-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.15rem;
}

.card-action-spacer {
  flex: 1 1 auto;
  min-width: 0;
}

.card-view-all-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.38rem 0.82rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(135deg, rgba(157, 78, 221, 0.22) 0%, rgba(236, 72, 153, 0.16) 100%);
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

.card:hover .card-view-all-btn,
.card:focus .card-view-all-btn {
  border-color: rgba(255, 255, 255, 0.24);
  background: linear-gradient(135deg, rgba(157, 78, 221, 0.3) 0%, rgba(236, 72, 153, 0.22) 100%);
}

/* Image count badge */
.image-count-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: linear-gradient(135deg, rgba(157, 78, 221, 0.95) 0%, rgba(236, 72, 153, 0.95) 100%);
  color: white;
  padding: 0.4rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  z-index: 3;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.badge-icon {
  font-size: 1rem;
  line-height: 1;
}

.badge-text {
  line-height: 1;
}

/* Search box */
.search-box {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-shrink: 0; /* 防止搜尋框被壓縮 */
}

.search-input {
  padding: 0.75rem var(--spacing-md);
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.875rem;
  min-width: 200px;
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(157, 78, 221, 0.1);
}

.search-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.portfolio-tool-btn {
  min-height: 46px;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-secondary);
  box-shadow: none;
}

.portfolio-tool-btn:hover {
  border-color: var(--border-light);
  background-color: var(--bg-secondary);
  transform: none;
  box-shadow: none;
}

.portfolio-tool-btn:active {
  transform: none;
  box-shadow: none !important;
}

.portfolio-tool-btn:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(157, 78, 221, 0.1);
}

.portfolio-recent-btn {
  font-size: 0.875rem;
  font-weight: 500;
}

.portfolio-refresh-btn {
  width: 46px;
  min-width: 46px;
  padding: 0;
  font-size: 1rem !important;
}

/* 小螢幕優化 */
@media (max-width: 1200px) {
  .search-input {
    min-width: 150px; /* 縮小搜尋框 */
  }
}

@media (max-width: 768px) {
  .search-input {
    min-width: 120px; /* 更小的搜尋框 */
    font-size: 0.8rem;
  }
  
  .btn {
    padding: 0.6rem 1rem; /* 縮小按鈕 */
    font-size: 0.9rem;
  }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

/* Breadcrumb Navigation */
.breadcrumb {
  max-width: 1700px;
  margin: 0;
  margin-left: auto;
  margin-right: auto;
  padding: 1.5rem 2rem 1rem 0;
  padding-left: 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumb-item {
  background: none;
  border: none;
  color: var(--accent-purple);
  cursor: pointer;
  font-size: 1.25rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.breadcrumb-item:hover {
  background-color: rgba(157, 78, 221, 0.1);
  transform: translateY(-1px);
}

.breadcrumb-item:focus {
  outline: 2px solid var(--accent-purple);
  outline-offset: 2px;
}

.breadcrumb-separator {
  color: var(--text-secondary);
  font-size: 1.25rem;
  user-select: none;
}

.breadcrumb-current {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
}

.folder-inline-icon {
  display: inline-block;
  width: 1.32em;
  height: 1.32em;
  margin-right: 0.42rem;
  vertical-align: -0.12em;
  flex: 0 0 auto;
  background-image: url('../Image_folder/%E5%A4%A2%E6%B0%B8%E8%A8%AD%E8%A8%88-%E8%B3%87%E6%96%99%E5%A4%BE%E5%9C%96.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.folder-inline-label {
  display: inline-flex;
  align-items: center;
}

.breadcrumb-item[data-index="-1"]::before {
  content: '';
  display: inline-block;
  width: 1.32em;
  height: 1.32em;
  margin-right: 0.42rem;
  vertical-align: -0.12em;
  background-image: url('../Image_folder/%E5%A4%A2%E6%B0%B8%E8%A8%AD%E8%A8%88-%E8%B3%87%E6%96%99%E5%A4%BE%E5%9C%96.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.card-title.is-folder-title::before,
.card-mobile-title.is-folder-title::before {
  content: '';
  display: inline-block;
  width: 1.32em;
  height: 1.32em;
  margin-right: 0.42rem;
  vertical-align: -0.14em;
  background-image: url('../Image_folder/%E5%A4%A2%E6%B0%B8%E8%A8%AD%E8%A8%88-%E8%B3%87%E6%96%99%E5%A4%BE%E5%9C%96.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

@media (max-width: 768px) {
  .breadcrumb {
    gap: 0.2rem;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 1rem 0 0.8rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .breadcrumb::-webkit-scrollbar {
    display: none;
  }

  .breadcrumb-item,
  .breadcrumb-current,
  .breadcrumb-separator {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .breadcrumb-item,
  .breadcrumb-current {
    font-size: 0.92rem;
    padding: 0.28rem 0.36rem;
  }

  .folder-inline-icon {
    margin-right: 0.3rem;
  }

  .category-btn::before,
  .breadcrumb-item[data-index="-1"]::before,
  .card-title.is-folder-title::before,
  .card-mobile-title.is-folder-title::before {
    margin-right: 0.3rem;
  }

  .breadcrumb-separator {
    font-size: 0.9rem;
  }
}

body.preview-mobile .breadcrumb {
  gap: 0.2rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 1rem 0 0.8rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

body.preview-mobile .breadcrumb::-webkit-scrollbar {
  display: none;
}

body.preview-mobile .breadcrumb-item,
body.preview-mobile .breadcrumb-current,
body.preview-mobile .breadcrumb-separator {
  flex: 0 0 auto;
  white-space: nowrap;
}

body.preview-mobile .breadcrumb-item,
body.preview-mobile .breadcrumb-current {
  font-size: 0.92rem;
  padding: 0.28rem 0.36rem;
}

body.preview-mobile .folder-inline-icon {
  margin-right: 0.3rem;
}

body.preview-mobile .category-btn::before,
body.preview-mobile .breadcrumb-item[data-index="-1"]::before,
body.preview-mobile .card-title.is-folder-title::before,
body.preview-mobile .card-mobile-title.is-folder-title::before {
  margin-right: 0.3rem;
}

body.preview-mobile .breadcrumb-separator {
  font-size: 0.9rem;
}

/* Loading indicator */
.loading {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
  }
  
  .card {
    height: auto;
    min-height: 350px;
  }

  .card-mobile-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 1rem 0.75rem;
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .card-content {
    flex: 1 1 auto;
    min-height: 0;
  }

  .card-content .card-title {
    display: none;
  }

  .card-subcategory {
    order: 2;
    margin: -0.05rem 0 0.05rem;
    font-size: 0.76rem;
    line-height: 1.35;
  }

  .card-subcategory::before {
    content: "分類：";
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
    margin-right: 0.12rem;
  }

  .card-mobile-category {
    display: inline-flex !important;
    align-items: center;
    flex: 0 1 auto;
    min-width: 0;
    margin: 0;
    font-size: 0.74rem;
    line-height: 1.25;
    font-weight: 600;
    color: rgba(233, 201, 255, 0.78);
    text-shadow: 0 0 10px rgba(157, 78, 221, 0.18);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .card-mobile-category::before {
    content: "分類：";
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
    margin-right: 0.12rem;
  }

  .card-subcategory {
    display: none !important;
  }

  .card-date {
    order: 3;
  }

  body.root-overview-view .card-date {
    display: none !important;
  }

  .card-action-row {
    order: 4;
    display: flex;
    width: 100%;
    margin-top: auto;
    padding-top: 0.35rem;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
  }

  .card-view-all-btn {
    font-size: 0.78rem;
    padding: 0.34rem 0.72rem;
    min-height: 1.9rem;
    opacity: 1;
  }
}

@media (max-width: 480px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .card {
    height: 400px;
  }
}


/* Dropdown menu styles（與上方一致：緊貼主選單） */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  min-width: 200px;
  max-width: 300px;
  z-index: 1500;
  padding: var(--spacing-sm);
}

.dropdown-item {
  padding: var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

.dropdown-item:hover {
  background-color: rgba(157, 78, 221, 0.1);
  color: white !important;
}

.dropdown-item.active {
  background-color: rgba(157, 78, 221, 0.2);
  color: white;
}

.sub-subcategory-dropdown {
  position: absolute;
  top: 0;
  left: calc(100% + 0.5rem);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  min-width: 200px;
  max-width: 300px;
  z-index: 2100;
  padding: var(--spacing-sm);
}

/* Focus visible for accessibility */
*:focus-visible {
  outline: 2px solid var(--accent-purple);
  outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-purple);
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;}