/**
 * File Item Component - Shadcn/UI Style
 * 文件管理器样式
 */

/* ===== 面包屑导航 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  background: var(--card);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  font-size: 0.8125rem;
  overflow-x: auto;
  white-space: nowrap;
}

/* 紧凑模式面包屑（内联在文件列表顶部） */
.breadcrumb.breadcrumb-compact {
  height: 24px;
  min-height: 24px;
  padding: 0 0.375rem;
  margin-bottom: 0;
  border-radius: 0;
  border-bottom: 1px solid var(--border);
  background: var(--muted);
  gap: 0;
  flex-shrink: 0;
  overflow: hidden;
  font-size: 0.6875rem;
}

/* 返回上级按钮 */
.breadcrumb-back-btn {
  width: 26px;
  height: 26px;
  min-width: 26px;
  min-height: 26px;
  padding: 0;
  margin: 0;
  display: flex !important;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--muted-foreground);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast, 150ms);
  flex-shrink: 0;
  opacity: 1;
  visibility: visible;
  position: relative;
  z-index: 1;
}

.breadcrumb-back-btn:hover {
  background: var(--accent);
  color: var(--foreground);
  opacity: 1;
}

.breadcrumb-back-btn:active {
  transform: scale(0.95);
  opacity: 0.8;
}

.breadcrumb-back-btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.breadcrumb-back-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.breadcrumb-back-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  display: block;
  pointer-events: none;
}

/* 确保在紧凑模式下按钮也可见 */
.breadcrumb-compact .breadcrumb-back-btn {
  margin-right: 0.25rem;
}

/* 当前目录显示 */
.breadcrumb-current-dir {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: default;
}

.breadcrumb-current-dir:hover {
  background: var(--accent);
}

.breadcrumb-dir-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

.breadcrumb-dir-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-item {
  color: var(--muted-foreground);
  cursor: pointer;
  padding: 0 0.1875rem;
  border-radius: 2px;
  transition: all var(--transition-fast, 150ms);
  display: flex;
  align-items: center;
  font-size: 0.6875rem;
  border: none;
  background: transparent;
  font-family: inherit;
  white-space: nowrap;
  line-height: 1;
  flex-shrink: 0;
}

.breadcrumb-item:hover {
  background: var(--accent);
  color: var(--foreground);
}

.breadcrumb-item.breadcrumb-root {
  color: var(--primary);
  font-weight: 600;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}

.breadcrumb-item.breadcrumb-current {
  color: var(--foreground);
  font-weight: 500;
  cursor: default;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-item.breadcrumb-current:hover {
  background: transparent;
}

.breadcrumb-separator {
  color: var(--muted-foreground);
  font-size: 0.625rem;
  user-select: none;
  flex-shrink: 0;
  opacity: 0.6;
}

/* ===== 文件列表容器 ===== */
#files-container {
  flex: 1;
  overflow-y: auto;
  position: relative;
}

#files-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 4px;
}

/* ===== 文件项 - VS Code 紧凑风格 ===== */
.file-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast, 150ms);
  border: 1px solid transparent;
  user-select: none;
  animation: listItemIn var(--transition-normal, 200ms) ease-out;
  animation-fill-mode: both;
  min-height: 24px;
}

.file-item:hover {
  background: var(--muted);
  border-color: var(--border);
}

.file-item.selected {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
}

.file-item.folder {
  cursor: pointer;
}

.file-item.file {
  cursor: default;
}

/* 文件图标 - VS Code 紧凑风格 */
.file-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  line-height: 1;
}

/* 文件信息 */
.file-info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.file-name {
  font-size: 13px;
  font-weight: 400;
  color: var(--foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

/* 文件元信息 - VS Code 风格默认隐藏 */
.file-meta {
  display: none;
}

.file-meta-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* 文件操作按钮 - VS Code 风格默认隐藏，使用右键菜单 */
.file-actions {
  display: none;
}

/* ===== 目录展开/收缩箭头 ===== */
.folder-toggle {
  width: 16px;
  height: 16px;
  min-width: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--muted-foreground);
  transition: transform var(--transition-fast, 150ms), color var(--transition-fast, 150ms);
  flex-shrink: 0;
  border-radius: var(--radius-sm);
}

.folder-toggle:hover {
  color: var(--foreground);
  background: var(--accent);
}

.folder-toggle svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast, 150ms);
}

/* 展开状态：箭头旋转90度 */
.folder-toggle.expanded svg {
  transform: rotate(90deg);
}

/* 文件项的占位符（与展开箭头同宽，保持对齐） */
.folder-toggle-placeholder {
  width: 16px;
  min-width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ===== 子目录容器 ===== */
.folder-children {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

/* 加载中状态 */
.folder-children-loading {
  padding: 8px 24px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.loading-spinner-small {
  width: 14px;
  height: 14px;
  border: 2px solid var(--muted);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* 空目录提示 */
.folder-children-empty {
  padding: 4px 8px;
}

.empty-folder-hint {
  font-size: 12px;
  color: var(--muted-foreground);
  font-style: italic;
}

/* 展开的目录项样式 */
.file-item.folder.expanded {
  background: rgba(255, 255, 255, 0.03);
}

/* 列表项依次入场 */
.file-item:nth-child(1) { animation-delay: 0ms; }
.file-item:nth-child(2) { animation-delay: 20ms; }
.file-item:nth-child(3) { animation-delay: 40ms; }
.file-item:nth-child(4) { animation-delay: 60ms; }
.file-item:nth-child(5) { animation-delay: 80ms; }
.file-item:nth-child(n+6) { animation-delay: 100ms; }

/* 文件大小和日期格式化显示 */
.file-size {
  color: var(--muted-foreground);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.6875rem;
}

.file-date {
  color: var(--muted-foreground);
}

/* 文件面板内容区滚动 */
#files-panel-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

#files-panel-content .breadcrumb {
  flex-shrink: 0;
}

#files-panel-content #files-container {
  flex: 1;
  overflow-y: auto;
}

/* ===== 文件变化实时高亮动画 ===== */

/* 新增文件高亮 */
.file-item.file-added {
  animation: fileAdded 2s ease-out;
}

@keyframes fileAdded {
  0% {
    background: hsl(142 76% 36% / 0.3);
    border-color: hsl(142 76% 36%);
    transform: scale(1.02);
  }
  50% {
    background: hsl(142 76% 36% / 0.15);
    border-color: hsl(142 76% 36% / 0.5);
  }
  100% {
    background: var(--card);
    border-color: transparent;
    transform: scale(1);
  }
}

/* 修改文件高亮 */
.file-item.file-changed {
  animation: fileChanged 2s ease-out;
}

@keyframes fileChanged {
  0% {
    background: hsl(45 93% 47% / 0.3);
    border-color: hsl(45 93% 47%);
  }
  50% {
    background: hsl(45 93% 47% / 0.15);
    border-color: hsl(45 93% 47% / 0.5);
  }
  100% {
    background: var(--card);
    border-color: transparent;
  }
}

/* 删除文件高亮（淡出） */
.file-item.file-deleted {
  animation: fileDeleted 0.5s ease-out forwards;
}

@keyframes fileDeleted {
  0% {
    opacity: 1;
    background: hsl(0 84% 60% / 0.2);
    border-color: hsl(0 84% 60%);
  }
  100% {
    opacity: 0;
    background: hsl(0 84% 60% / 0.3);
    transform: translateX(-10px);
  }
}

/* 文件高亮闪烁效果（用于预览中的文件） */
.file-item.file-highlight {
  animation: fileHighlight 0.6s ease-in-out;
}

@keyframes fileHighlight {
  0%, 100% {
    background: var(--card);
    border-color: transparent;
  }
  50% {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary);
  }
}

/* ===== 浅色主题样式 - 颜色反转 ===== */

/* 文件项选中 - 浅色主题 */
body:not(.dark) .file-item.selected {
  background: rgba(0, 0, 0, 0.1);
}

/* 展开的目录 - 浅色主题 */
body:not(.dark) .file-item.folder.expanded {
  background: rgba(0, 0, 0, 0.03);
}

/* 进行中状态 - 浅色主题 */
body:not(.dark) .todo-item.in_progress {
  background: rgba(0, 0, 0, 0.1);
}

/* 文件高亮动画 - 浅色主题 */
@keyframes fileHighlightLight {
  0%, 100% {
    background: var(--card);
    border-color: transparent;
  }
  50% {
    background: rgba(0, 0, 0, 0.15);
    border-color: var(--primary);
  }
}

body:not(.dark) .file-item.file-highlight {
  animation: fileHighlightLight 0.6s ease-in-out;
}