/* ============================================
   实验环境页面样式
   Lab Environment Page Styles
   ============================================ */

/* 实验环境布局 */
.lab-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* 文件侧边栏 */
.file-sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-primary);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition-normal);
}

.file-sidebar.collapsed {
  width: 0;
  overflow: hidden;
}

.file-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-primary);
}

.file-sidebar-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.file-actions {
  display: flex;
  gap: var(--space-2);
}

.file-actions .btn-icon {
  width: 28px;
  height: 28px;
  color: var(--text-secondary);
}

.file-actions .btn-icon:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

/* 文件树 */
.file-tree {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2);
}

.file-tree-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.file-tree-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.file-tree-item.active {
  background: var(--primary-500);
  color: white;
}

.file-tree-toggle {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.file-tree-item.folder.expanded .file-tree-toggle {
  transform: rotate(90deg);
}

.file-tree-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-tree-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-tree-children {
  margin-left: var(--space-6);
  border-left: 1px solid var(--border-primary);
  padding-left: var(--space-2);
}

.file-tree-item.folder:not(.expanded) + .file-tree-children {
  display: none;
}

/* 主编辑区 */
.lab-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-primary);
}

/* 实验页面头部 */
.lab-header {
  height: 48px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  flex-shrink: 0;
}

.lab-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.lab-header-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.lab-header-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.lab-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.breadcrumb-item {
  color: var(--text-secondary);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

.breadcrumb-separator {
  color: var(--text-tertiary);
}

/* 编辑器容器 */
.editor-container {
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* 代码编辑器 */
.code-editor {
  display: flex;
  height: 100%;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  background: var(--bg-primary);
}

.line-numbers {
  width: 60px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-primary);
  padding: var(--space-4) 0;
  text-align: right;
  color: var(--text-tertiary);
  user-select: none;
  flex-shrink: 0;
}

.line-numbers span {
  display: block;
  padding: 0 var(--space-3);
  height: 22.4px;
  line-height: 22.4px;
}

.code-content {
  flex: 1;
  padding: var(--space-4);
  overflow: auto;
}

.code-content pre {
  margin: 0;
  white-space: pre;
  word-wrap: normal;
}

.code-content code {
  font-family: inherit;
  background: transparent;
  padding: 0;
}

/* 代码高亮 */
.code-keyword {
  color: #c678dd;
}

.code-string {
  color: #98c379;
}

.code-number {
  color: #d19a66;
}

.code-comment {
  color: #5c6370;
  font-style: italic;
}

.code-function {
  color: #61afef;
}

/* 底部面板 */
.bottom-panel {
  height: 200px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.panel-tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--border-primary);
  background: var(--bg-tertiary);
}

.panel-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.panel-tab:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.panel-tab.active {
  color: var(--text-primary);
  background: var(--bg-secondary);
  font-weight: var(--font-weight-medium);
}

.panel-content {
  flex: 1;
  overflow: hidden;
}

.panel-body {
  height: 100%;
  overflow: auto;
  padding: var(--space-3);
}

/* 终端样式 */
.terminal {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 2px 0;
}

.terminal-prompt {
  color: var(--success-500);
  font-weight: var(--font-weight-semibold);
}

.terminal-command {
  color: var(--text-primary);
}

.terminal-output {
  color: var(--text-secondary);
}

.terminal-output .output {
  padding-left: var(--space-4);
}

.terminal-output .success {
  color: var(--success-500);
}

.terminal-output .highlight {
  color: var(--primary-400);
  font-weight: var(--font-weight-medium);
}

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 18px;
  background: var(--primary-500);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* 输出统计 */
.output-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.stat-item {
  background: var(--bg-tertiary);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  text-align: center;
}

.stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

.stat-value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

/* 图表预览 */
.chart-preview {
  padding: var(--space-4);
}

.chart-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 600px;
}

.bar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.bar-label {
  width: 80px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-align: right;
}

.bar-wrapper {
  flex: 1;
  height: 24px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.bar {
  height: 100%;
  border-radius: var(--radius-sm);
  transition: width var(--transition-slow);
}

.bar-value {
  width: 40px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  text-align: right;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .file-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: var(--z-fixed);
    transform: translateX(-100%);
  }

  .file-sidebar.mobile-open {
    transform: translateX(0);
  }

  .output-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .lab-header-center {
    display: none;
  }

  .lab-header-right .btn span {
    display: none;
  }

  .bottom-panel {
    height: 160px;
  }

  .output-stats {
    grid-template-columns: 1fr;
  }

  .line-numbers {
    width: 45px;
  }

  .code-editor {
    font-size: 13px;
  }
}

/* 滚动条样式 */
.file-tree::-webkit-scrollbar,
.code-content::-webkit-scrollbar,
.panel-body::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.file-tree::-webkit-scrollbar-track,
.code-content::-webkit-scrollbar-track,
.panel-body::-webkit-scrollbar-track {
  background: transparent;
}

.file-tree::-webkit-scrollbar-thumb,
.code-content::-webkit-scrollbar-thumb,
.panel-body::-webkit-scrollbar-thumb {
  background: var(--border-primary);
  border-radius: var(--radius-full);
}

.file-tree::-webkit-scrollbar-thumb:hover,
.code-content::-webkit-scrollbar-thumb:hover,
.panel-body::-webkit-scrollbar-thumb:hover {
  background: var(--border-secondary);
}