#tool-body {
  --primary: #16baaa;
  --preview-bg: #f9f9f9;
  --preview-border: #e8e8e8;
  --preview-text: #333;
  --code-bg: #f5f5f5;
  --ruby-fs-sm: 11px;
  --ruby-fs-md: 14px;
  --ruby-fs-lg: 18px;
  --char-fs-sm: 22px;
  --char-fs-md: 28px;
  --char-fs-lg: 36px;
}
.theme-dark-mode #tool-body {
  --preview-bg: #1e1e1e;
  --preview-border: #3a3a3a;
  --preview-text: #ddd;
  --code-bg: #2a2a2a;
}

#tool-body .section-label {
  margin: 14px 0 6px 2px;
  font-size: 13px;
  color: #666;
}
.theme-dark-mode #tool-body .section-label {
  color: #aaa;
}

#tool-body .opt-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 24px;
  margin-bottom: 4px;
}
#tool-body .opt-row .layui-form-checkbox {
  margin-top: 6px;
  margin-bottom: 0;
}

#tool-body .convert-btn {
  width: 100%;
  margin-top: 16px;
  background: var(--primary);
  border-color: var(--primary);
}
#tool-body .convert-btn:hover {
  opacity: 0.88;
}

/* 输出区 Tab */
#tool-body .out-tabs {
  display: flex;
  border-bottom: 2px solid var(--preview-border);
  margin-top: 28px;
  margin-bottom: 0;
}
#tool-body .out-tab {
  padding: 7px 20px;
  cursor: pointer;
  font-size: 13px;
  color: #888;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color .2s, border-color .2s;
  user-select: none;
}
#tool-body .out-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: bold;
}
.theme-dark-mode #tool-body .out-tab { color: #888; }
.theme-dark-mode #tool-body .out-tab.active { color: var(--primary); }

#tool-body .out-panel { display: none; }
#tool-body .out-panel.active { display: block; }

/* 注音预览区 */
#tool-body .preview-box {
  background: var(--preview-bg);
  border: 1px solid var(--preview-border);
  border-top: none;
  min-height: 140px;
  padding: 20px 18px 16px;
  line-height: 2.8;
  word-break: break-all;
  color: var(--preview-text);
  border-radius: 0 0 4px 4px;
}
#tool-body .preview-box ruby {
  display: inline-flex;
  flex-direction: column-reverse;
  align-items: center;
  vertical-align: bottom;
  margin: 0 1px;
  line-height: 1;
}
#tool-body .preview-box {
  --ruby-color: #16baaa; 
}
#tool-body .preview-box rt {
  font-size: var(--ruby-fs-md);
  color: var(--ruby-color);
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
}
#tool-body .preview-box rb,
#tool-body .preview-box .rb-char {
  font-size: var(--char-fs-md);
  line-height: 1;
}
#tool-body .preview-box .non-han {
  font-size: var(--char-fs-md);
  line-height: 1;
  vertical-align: bottom;
  display: inline-block;
}
#tool-body .preview-empty {
  color: #bbb;
  font-size: 14px;
  padding: 30px 0;
  text-align: center;
}
.theme-dark-mode #tool-body .preview-empty { color: #555; }

/* 样式控制栏 */
#tool-body .style-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 10px 14px;
  background: var(--preview-bg);
  border: 1px solid var(--preview-border);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  margin-top: 14px;
}
#tool-body .style-bar .bar-label {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}
#tool-body .size-btns button,
#tool-body .color-btns button {
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 3px;
  border: 1px solid #ddd;
  background: transparent;
  cursor: pointer;
  transition: all .15s;
  color: var(--preview-text);
}
.theme-dark-mode #tool-body .size-btns button,
.theme-dark-mode #tool-body .color-btns button {
  border-color: #444;
}
#tool-body .size-btns button.active,
#tool-body .color-btns button.active {
  border-color: var(--primary);
  color: var(--primary);
}
#tool-body .color-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  margin-right: 4px;
  vertical-align: middle;
}

/* HTML 代码区 */
#tool-body .code-area {
  background: var(--code-bg);
  border: 1px solid var(--preview-border);
  border-top: none;
  min-height: 140px;
  padding: 14px;
  font-size: 12px;
  font-family: monospace;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--preview-text);
  border-radius: 0 0 4px 4px;
}

/* 导出按钮组 */
#tool-body .export-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
#tool-body .export-bar .layui-btn {
  margin: 0;
  flex: 1;
  min-width: 120px;
}

/* 纯文本预览 */
#tool-body .plain-area {
  background: var(--code-bg);
  border: 1px solid var(--preview-border);
  border-top: none;
  min-height: 100px;
  padding: 14px;
  font-size: 13px;
  font-family: monospace;
  white-space: pre;
  /*   word-break: break-all; */
  color: var(--preview-text);
  border-radius: 0 0 4px 4px;
  line-height: 1.8;
}

#tool-body .preview-box,
#tool-body .code-area,
#tool-body .plain-area
{
  max-height: 400px;
  overflow-y: auto;
}