/* 预览区容器基础 */
.preview-area {
  width: 50%;
  height: 100%;
  border: 1px solid var(--border-dark);
  background: var(--panel);
  padding: 16px;
  border-radius: 6px;
  overflow-y: auto;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  transition: all 0.3s ease;
}

/* 预览区内部缩放容器 */
.preview-inner {
  transform-origin: top left;
  width: 100%;
  transition: transform 0.2s ease;
}

/* ====================================== */
/* Markdown 渲染样式 */
/* ====================================== */

/* 标题 */
.preview-inner h1 { font-size: 24px; margin: 16px 0 12px; color: var(--text); }
.preview-inner h2 { font-size: 20px; margin: 14px 0 10px; color: var(--text); }
.preview-inner h3 { font-size: 18px; margin: 12px 0 8px; color: var(--text); }
.preview-inner h4 { font-size: 16px; margin: 10px 0 6px; color: var(--text); }

/* 段落 */
.preview-inner p { margin: 0.6em 0; }
.preview-inner strong { font-weight: 600; }
.preview-inner em { font-style: italic; }

/* 列表 */
.preview-inner ul,
.preview-inner ol {
  padding-left: 28px;
  margin: 8px 0;
}
.preview-inner li { margin: 4px 0; }

/* 引用 */
.preview-inner blockquote {
  border-left: 4px solid var(--primary);
  background: var(--hover);
  padding: 10px 14px;
  margin: 10px 0;
  border-radius: 0 4px 4px 0;
  color: var(--text);
}

/* 表格 */
.preview-inner table {
  border-collapse: collapse;
  width: 100%;
  margin: 12px 0;
  background: var(--panel);
}
.preview-inner th,
.preview-inner td {
  border: 1px solid var(--border);
  padding: 8px 12px;
}
.preview-inner th {
  background: var(--hover);
  font-weight: 600;
}
.preview-inner tr:hover {
  background: var(--hover);
}

/* 图片 */
.preview-inner img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 10px 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* 分割线 */
.preview-inner hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

/* 行内代码 */
.preview-inner code {
  background: var(--hover);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: Consolas, monospace;
  font-size: 0.9em;
}

/* 代码块 */
.preview-inner pre {
  border-radius: 6px;
  overflow-x: auto;
  transition: all 0.3s;
  position: relative;
}
.preview-inner pre code {
  display: block;
  background: transparent;
  color: inherit;
  padding-top: 0 !important;
  margin-top: 0 !important;
}

/* 任务列表 */
.preview-inner input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-dark);
  border-radius: 3px;
  margin-right: 6px;
  cursor: pointer;
  position: relative;
  vertical-align: middle;
  transition: all 0.2s;
}
.preview-inner input[type="checkbox"]:checked {
  background-color: #10b981;
  border-color: #10b981;
}
.preview-inner input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 30%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  margin-top: -4px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.preview-inner input[type="checkbox"]:hover {
  border-color: #10b981;
}
.preview-inner li:has(input[type="checkbox"]) {
  list-style: none;
  margin-left: -24px;
  display: flex;
  align-items: center;
  gap: 4px;
}