/* Settings Panel: Accordion, Voice List, Close Button */

/* Close button at top-right of settings panel */
:where(#settings-menu) .panel-close-btn {
  position: absolute;
  top: 8px;
  right: 10px;
  z-index: 5;
  width: 32px;
  height: 32px;
  line-height: 28px;
  text-align: center;
  border: none;
  border-radius: 6px;
  background: var(--button-hover-light);
  color: inherit;
  cursor: pointer;
  font-size: 20px;
}
html.dark :where(#settings-menu) .panel-close-btn {
  background: var(--bg-hover-light);
}
:where(#settings-menu) .panel-close-btn:hover {
  background: var(--button-active-light);
}
html.dark :where(#settings-menu) .panel-close-btn:hover {
  background: var(--button-active-light);
}

/* Accordion */
:where(#settings-menu) .accordion {
  display: block;
}
:where(#settings-menu) .accordion-item {
  margin-bottom: 8px;
}
:where(#settings-menu) .accordion-header {
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  padding-right: 28px; /* 预留箭头位置 */
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-subtle-light);
  color: inherit;
  cursor: pointer;
  font-size: 14px;
  position: relative; /* 供箭头定位 */
}
html.dark :where(#settings-menu) .accordion-header {
  border-color: var(--border-light);
  background: var(--bg-subtle-light);
}
:where(#settings-menu) .accordion-header:hover {
  background: var(--button-hover-light);
}
html.dark :where(#settings-menu) .accordion-header:hover {
  background: var(--button-hover-light);
}
:where(#settings-menu) .accordion-header::after {
  content: '▸';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.75;
  transition: transform 0.2s ease, opacity 0.2s ease;
  font-size: 14px;
}
:where(#settings-menu) .accordion .accordion-item.open > .accordion-header::after {
  content: '▾';
}
:where(#settings-menu) .accordion-panel {
  padding: 8px 4px 2px 4px;
}

/* Voice list */
:where(#settings-menu) .accordion .voice-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
:where(#settings-menu) .voice-item-btn {
  padding: 6px 10px;
  font-size: 13px;
  border: 1px solid var(--border-strong-light);
  border-radius: 999px;
  background: var(--bg-hover-light);
  color: inherit;
  cursor: pointer;
}
html.dark :where(#settings-menu) .voice-item-btn {
  border-color: var(--border-strong-light);
  background: var(--bg-subtle-light);
}




/* Small hint text */
:where(#settings-menu) .voice-hint {
  margin-top: 6px;
  font-size: 12px;
  opacity: 0.7;
}

/* Voice settings panel enhancements */
:where(#voice-settings-menu) h4 {
  margin: 0;
  margin-bottom: 6px;
  font-size: 1.1rem;
  text-align: center;
  opacity: 0.95;
}

:where(#voice-settings-menu) .voice-group {
  margin: 8px 0 6px 0;
  padding: 4px 0;
}

:where(#voice-settings-menu) .voice-group-title {
  font-size: 13px;
  opacity: 0.8;
  margin: 6px 0;
}

:where(#voice-settings-menu) .voice-controls {
  border: 1px solid var(--border-light);
  border-radius: 10px;
  background: var(--bg-subtle-light);
}

html.dark :where(#voice-settings-menu) .voice-controls {
  border-color: var(--border-light);
  background: var(--bg-subtle-light);
}

:where(#voice-settings-menu) .voice-control-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0;
}

:where(#voice-settings-menu) .voice-control-row label {
  min-width: 80px;
  font-size: 13px;
  opacity: 0.9;
}

:where(#voice-settings-menu) input[type='range'] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: var(--button-active-light);
  outline: none;
}
html.dark :where(#voice-settings-menu) input[type='range'] {
  background: var(--border-strong-light);
}

/* WebKit thumb */
:where(#voice-settings-menu) input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #3b82f6;
  box-shadow: 0 0 0 2px var(--accent-border-light);
  border: none;
  cursor: pointer;
}

/* Firefox track + thumb */
:where(#voice-settings-menu) input[type='range']::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #3b82f6;
  border: none;
  cursor: pointer;
}
:where(#voice-settings-menu) input[type='range']::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: var(--button-active-light);
}
html.dark :where(#voice-settings-menu) input[type='range']::-moz-range-track {
  background: var(--border-strong-light);
}

:where(#voice-settings-menu) .voice-list {
  margin-top: 6px;
}

:where(#voice-settings-menu) .voice-group .voice-list {
  gap: 10px;
}

:where(#voice-settings-menu) .voice-item-btn {
  padding: 6px 12px;
  font-size: 13px;
}

:where(#voice-settings-menu) .voice-item-btn.active {
  box-shadow: 0 0 0 2px var(--accent-shadow-light);
}

/* 原文对照功能样式 */
.char-with-reference {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  margin: 1px;
}

.font-reference {
  font-family: '宋体', SimSun, serif !important;
  font-size: 13px !important;
  color: #ff8533c2 !important;
  line-height: 13px !important;
  pointer-events: none;
  font-weight: normal !important;
  margin-top: -5px;
  z-index: 1;
}

/* 暗色模式下的对照文字颜色 */
html.dark .font-reference {
  color: #ff8533c2 !important;
}

/* 确保对照功能不影响正常的文本选择 */
.char-with-reference .font-reference {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* ===== 字体面板专用样式 ===== */

/* 字体面板网格布局 */
:where(#settings-menu) #accordion-fonts .panel-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 8px;
  row-gap: 8px;
}

/* 字体按钮基础样式 */
:where(#settings-menu) #accordion-fonts .font-option-btn {
  width: 100% !important;
  margin: 0 !important;
  box-sizing: border-box;
  max-width: 210px;
  padding: 8px 12px;
  border: 1px solid var(--border-strong-light);
  border-radius: 6px;
  background-color: var(--bg-hover-light);
  color: inherit;
  cursor: pointer;
  font-size: 13px;
  text-align: center;
  transition: all 0.2s ease;
}

/* 暗色模式字体按钮 */
html.dark :where(#settings-menu) #accordion-fonts .font-option-btn {
  border-color: var(--border-strong-light);
  background-color: var(--bg-subtle-light);
}

/* 字体按钮悬停效果 */
:where(#settings-menu) #accordion-fonts .font-option-btn:hover {
  background-color: var(--bg-hover-light);
  border-color: var(--border-stronger-light);
}

html.dark :where(#settings-menu) #accordion-fonts .font-option-btn:hover {
  background-color: var(--button-hover-light);
  border-color: var(--border-stronger-light);
}

/* 字体按钮激活状态 */
:where(#settings-menu) #accordion-fonts .font-option-btn.active {
  background-color: #007bff;
  color: white;
  border-color: #0056b3;
}

/* PC端瀑布式布局优化 */
@media (min-width: 768px) {
  :where(#settings-menu) #accordion-fonts .panel-section {
    grid-template-columns: repeat(auto-fit, minmax(150px, 210px));
    justify-content: start;
  }
}

/* 宽屏优化 */
@media (min-width: 1200px) {
  :where(#settings-menu) #accordion-fonts .panel-section {
    grid-template-columns: repeat(auto-fit, minmax(160px, 210px));
  }
}

/* 移动端布局 */
@media (max-width: 767px) {
  :where(#settings-menu) #accordion-fonts .panel-section {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 6px;
    row-gap: 6px;
  }
  
  :where(#settings-menu) #accordion-fonts .font-option-btn {
    max-width: none;
    font-size: 12px;
    padding: 6px 8px;
  }
}

/* ===== 通用面板样式 ===== */

/* 面板内容网格 */
:where(#settings-menu) .panel-content-grid { 
    display: flex; 
    flex-direction: column; 
    gap: calc(var(--spacing-unit) * 2); 
}

/* 面板区域 */
:where(#settings-menu) .panel-section { 
    display: flex; 
    gap: calc(var(--spacing-unit) * 0.5); 
    justify-content: flex-start; 
    flex-wrap: wrap; 
    align-items: stretch;
}

/* 面板分隔线 */
:where(#settings-menu) .panel-divider { 
    height: 1px; 
    background-color: var(--border-color); 
    margin: 0.5rem 0; 
}

/* ===== 设置按钮样式 ===== */

/* 设置选项按钮基础样式 */
:where(#settings-menu) .setting-option-btn { 
    background-color: var(--button-bg-color); 
    border: none; 
    padding: calc(var(--spacing-unit) * 0.75) var(--spacing-unit); 
    color: var(--text-color); 
    cursor: pointer; 
    border-radius: var(--border-radius); 
    text-align: center; 
    font-size: 0.9rem; 
    transition: background-color var(--transition-speed), 
                transform var(--transition-speed),
                color var(--transition-speed); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    gap: calc(var(--spacing-unit) * 0.5);
    /* 瀑布式布局：最大宽度210px */
    flex: 1 1 auto;
    max-width: 210px;
    min-width: 120px;
    min-height: 3rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 暗色模式设置按钮 */
html.dark :where(#settings-menu) .setting-option-btn {
    background-color: var(--button-bg-color);
    color: var(--text-color);
}

/* 设置按钮悬停效果 */
:where(#settings-menu) .setting-option-btn:hover { 
    background-color: var(--border-color); 
}

html.dark :where(#settings-menu) .setting-option-btn:hover {
    background-color: var(--dark-mode-hover);
}

/* 设置按钮激活状态 */
:where(#settings-menu) .setting-option-btn.active {
    background: #007bff;
    color: white;
}

/* ===== 响应式布局 ===== */

/* PC端瀑布式布局优化 */
@media (min-width: 768px) {
    :where(#settings-menu) .panel-section {
        justify-content: flex-start;
    }
    
    :where(#settings-menu) .setting-option-btn {
        flex: 1 1 auto;
        max-width: 210px;
        min-width: 150px;
    }
}

/* 宽屏优化 */
@media (min-width: 1200px) {
    :where(#settings-menu) .setting-option-btn {
        min-width: 160px;
    }
}

/* 移动端优化 */
@media (max-width: 767px) {
    :where(#settings-menu) .panel-section {
        gap: calc(var(--spacing-unit) * 0.25);
    }
    
    :where(#settings-menu) .setting-option-btn {
        flex: 1 1 calc(50% - 0.25rem);
        max-width: none;
        min-width: 0;
        font-size: 0.8rem;
        padding: calc(var(--spacing-unit) * 0.5) calc(var(--spacing-unit) * 0.75);
    }
}