* {
  box-sizing: border-box;
}
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  margin: 0;
  color: #222;
}
.container {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 16px;
}
.controls {
  display: flex;
  gap: 8px;
  margin: 12px 0 24px;
  flex-wrap: wrap;
}
input {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
}
button {
  padding: 8px 16px;
  border: 0;
  background: #111827;
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s;
}
button:hover {
  background: #1f2937;
}
.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pane {
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 12px;
  background: #fafafa;
  display: flex;
  flex-direction: column;
}
.code {
  background: #0b1021;
  color: #e6edf3;
  padding: 12px;
  border-radius: 8px;
  overflow: auto;
  max-height: 70vh;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* diff语法高亮样式 */
.diff-add {
  background-color: rgba(52, 211, 153, 0.2); /* 浅绿色背景 - 新增行 */
  color: #34d399;
  display: block;
  padding: 0 4px;
  border-left: 3px solid #34d399;
}

.diff-remove {
  background-color: rgba(239, 68, 68, 0.2); /* 浅红色背景 - 删除行 */
  color: #ef4444;
  display: block;
  padding: 0 4px;
  border-left: 3px solid #ef4444;
}

.diff-range {
  background-color: rgba(96, 165, 250, 0.2); /* 浅蓝色背景 - 行范围信息 */
  color: #60a5fa;
  display: block;
  padding: 0 4px;
  border-left: 3px solid #60a5fa;
}

.diff-header {
  background-color: rgba(167, 139, 250, 0.2); /* 浅紫色背景 - 文件头信息 */
  color: #a78bfa;
  display: block;
  padding: 4px;
  font-weight: bold;
  margin-top: 8px;
  margin-bottom: 4px;
}

.diff-unchanged {
  display: block;
  padding: 0 4px;
}
.markdown {
  white-space: pre-wrap;
  background: #fff;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #eee;
  max-height: 70vh;
  overflow: auto;
}
/* 文件标签样式 */
.file-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.file-tab {
  background: #e5e7eb;
  color: #374151;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 14px;
  white-space: nowrap;
  min-width: auto;
  max-width: 200px;
  text-overflow: ellipsis;
  overflow: hidden;
}
.file-tab:hover {
  background: #d1d5db;
}
.file-tab.active {
  background: #111827;
  color: #fff;
}
/* 文件列表样式 */
.file-list {
  margin-top: 12px;
  padding: 12px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #eee;
}
.file-list.hidden {
  display: none;
}
.file-list h3 {
  margin: 0 0 8px 0;
  font-size: 16px;
  color: #374151;
}
.file-items {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 200px;
  overflow-y: auto;
}
.file-item {
  padding: 6px 8px;
  margin: 2px 0;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s;
}
.file-item:hover {
  background: #f3f4f6;
}
/* 响应式设计 */
@media (max-width: 768px) {
  .panes {
    grid-template-columns: 1fr;
  }
  .controls {
    flex-direction: column;
  }
  input {
    width: 100%;
  }
  .code {
    max-height: 50vh;
  }
  .markdown {
    max-height: 50vh;
  }
}