/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

:root {
  --bg-color: #f5f7fa;
  --text-color: #333;
  --card-bg: #fff;
  --border-color: #e0e0e0;
  --primary-color: #4a90e2;
  --primary-color-rgb: rgb(74, 144, 226);
  --accent-color: #5cb85c;
  --hover-color: #f5f5f5;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --input-bg: #fff;
  --player-bg: #e0e5ec;
  --header-bg: #fff;
  --footer-bg: #f8f9fa;
  --dropdown-bg: #fff;
  --lrc-play-color: #000000;
}

[data-theme="dark"] {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --card-bg: #1e1e1e;
  --border-color: #444;
  --primary-color: #5a9de2;
  --primary-color-rgb: rgb(90, 157, 226);
  --secondary-color: #adb5bd;
  --accent-color: #6cc76c;
  --hover-color: #3a3a3a;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --input-bg: #2d2d2d;
  --player-bg: #1e1e1e;
  --header-bg: #1a1a1a;
  --footer-bg: #1a1a1a;
  --dropdown-bg: #2d2d2d;
  --lrc-play-color: #f6ff00;
}

/* 双语歌词开关样式 */
.bilingual-switch {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  gap: 10px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: 0.4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  transition: 0.4s;
}

input:checked + .slider {
  background-color: #4a90e2;
}

input:focus + .slider {
  box-shadow: 0 0 1px #4a90e2;
}

input:checked + .slider:before {
  transform: translateX(20px);
}

.slider.round {
  border-radius: 20px;
}

.slider.round:before {
  border-radius: 50%;
}

.switch-label {
  margin-left: 10px;
  font-size: 14px;
}

.tooltip-icon {
  margin-left: 5px;
  color: #666;
  cursor: help;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: rgba(128, 128, 128, 0.15);
  transition: all 0.2s ease;
}

.tooltip-icon:hover {
  background-color: rgba(128, 128, 128, 0.25);
  color: var(--primary-color);
}

.tooltip-icon i {
  font-size: 0.75rem;
}

/* 现代化自定义提示框 */
.custom-tooltip {
  position: fixed;
  background-color: var(--card-bg);
  color: var(--text-color);
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 400;
  white-space: normal;
  max-width: 280px;
  min-width: 150px;
  text-align: left;
  line-height: 1.5;
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.15),
    0 2px 8px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
  transform: translateY(5px);
  z-index: 10000;
  pointer-events: none;
}

.custom-tooltip.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 自定义音频播放器 */
.custom-audio-player {
  background-color: var(--player-bg);
  border-radius: 12px;
  padding: 15px 20px;
  box-shadow:
    8px 8px 16px var(--shadow-color),
    -8px -8px 16px rgba(255, 255, 255, 0.2);
  margin-top: 15px;
}

/* 进度条样式 */
.audio-progress-bar {
  margin-bottom: 15px;
}

.progress-track {
  position: relative;
  height: 6px;
  background-color: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  box-shadow:
    inset 1px 1px 2px rgba(0, 0, 0, 0.1),
    inset -1px -1px 2px rgba(255, 255, 255, 0.7);
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background-color: var(--primary-color);
  border-radius: 3px;
  transition: width 0.1s ease;
}

.progress-handle {
  position: absolute;
  top: 50%;
  width: 16px;
  height: 16px;
  background-color: var(--input-bg);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  box-shadow:
    3px 3px 6px var(--shadow-color),
    -3px -3px 6px rgba(255, 255, 255, 0.3);
  transition: transform 0.2s ease;
}

.progress-handle:hover {
  transform: translate(-50%, -50%) scale(1.2);
  box-shadow:
    4px 4px 8px var(--shadow-color),
    -4px -4px 8px rgba(255, 255, 255, 0.3);
}

/* 时间显示 */
.time-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-color);
  font-family: monospace;
}

.current-time {
  font-weight: 500;
}

.total-time {
  opacity: 0.8;
}

.separator {
  margin: 0 5px;
}

/* 消息提示容器 */
.message-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

/* 消息组件样式 */
.message {
  padding: 15px 20px;
  border-radius: 12px;
  box-shadow:
    8px 8px 16px var(--shadow-color),
    -8px -8px 16px rgba(255, 255, 255, 0.3);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s ease-out;
  transition: all 0.3s ease;
  cursor: pointer;
  min-height: 60px;
}

/* 消息类型样式 */
.message.info {
  background-color: var(--bg-color);
  border-left: 4px solid var(--primary-color);
}

.message.success {
  background-color: var(--bg-color);
  border-left: 4px solid var(--accent-color);
}

.message.error {
  background-color: var(--bg-color);
  border-left: 4px solid #f44336;
}

.message.warning {
  background-color: var(--bg-color);
  border-left: 4px solid #ff9800;
}

/* 消息图标 */
.message i {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.message.info i {
  color: var(--primary-color);
}

.message.success i {
  color: var(--accent-color);
}

.message.error i {
  color: #f44336;
}

.message.warning i {
  color: #ff9800;
}

/* 消息内容 */
.message-content {
  flex: 1;
}

.message-title {
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.message-text {
  font-size: 0.9rem;
  line-height: 1.4;
}

/* 消息关闭按钮 */
.message-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-color);
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s ease;
}

.message-close:hover {
  background-color: var(--hover-color);
}

/* 消息动画 */
@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

.message.fade-out {
  animation: fadeOut 0.3s ease-in;
}

/* 自定义确认对话框 */
.confirm-dialog {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.confirm-dialog-content {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 25px;
  max-width: 400px;
  width: 90%;
  box-shadow:
    10px 10px 20px var(--shadow-color),
    -10px -10px 20px rgba(255, 255, 255, 0.3);
}

.confirm-dialog-title {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--text-color);
  text-align: center;
}

.confirm-dialog-message {
  margin-bottom: 20px;
  line-height: 1.5;
  text-align: center;
}

.confirm-dialog-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  padding: 20px;
  transition: all 0.3s ease;
}

/* 拖放高亮样式 */
body.drag-over {
  background-color: var(--hover-color);
  position: relative;
}

body.drag-over::before {
  content: attr(data-drop-text);
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--primary-color);
  color: white;
  padding: 30px 50px;
  border-radius: 16px;
  font-size: 1.5rem;
  font-weight: bold;
  z-index: 9999;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
}

body.drag-over::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 3px dashed #4a5568;
  border-radius: 20px;
  z-index: 9998;
  pointer-events: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding: 20px;
  border-radius: 16px;
  background-color: var(--header-bg);
  box-shadow:
    8px 8px 16px var(--shadow-color),
    -8px -8px 16px rgba(255, 255, 255, 0.3);
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

header p {
  color: var(--text-color);
  opacity: 0.8;
  font-size: 1.1rem;
}

main {
  display: flex;
  gap: 30px;
}

main.input-panel-collapsed {
  gap: 0;
}

/* 面板样式 */
.input-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  transition: all 0.3s ease;
}

.input-panel.collapsed {
  flex: 0;
  min-width: 0;
  overflow: hidden;
  padding: 0;
  margin: 0;
  gap: 0;
}

.input-panel.collapsed > .card,
.input-panel.collapsed > #collapse-input-panel-btn {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.collapse-panel-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
  opacity: 1;
}

.collapse-panel-btn:hover {
  background-color: var(--primary-color-dark, #357abd);
  transform: scale(1.1);
}

.expand-panel-btn {
  position: fixed;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition:
    all 0.3s ease,
    opacity 0.3s ease;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  opacity: 0;
}

.expand-panel-btn:not(.hidden) {
  opacity: 1;
}

.expand-panel-btn:hover {
  background-color: var(--primary-color-dark, #357abd);
  transform: translateY(-50%) scale(1.1);
}

.preview-panel {
  flex: 1.5;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  box-shadow:
    8px 8px 16px var(--shadow-color),
    -8px -8px 16px rgba(255, 255, 255, 0.2);
}

.card h2 {
  font-size: 1.4rem;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-color);
}

/* 上传区域 */
.upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 20px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  background-color: var(--input-bg);
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
}

.upload-label:hover {
  box-shadow:
    inset 3px 3px 6px var(--shadow-color),
    inset -3px -3px 6px rgba(255, 255, 255, 0.3);
}

.upload-label i {
  font-size: 1.2rem;
}

input[type="file"] {
  display: none;
}

/* 字幕转换功能样式 */
#subtitle-converter-container {
  margin-top: 15px;
}

.subtitle-mode-container {
  margin-top: 10px;
  padding: 12px;
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.02);
}

.subtitle-mode-container .radio-group {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.subtitle-mode-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 6px;
  transition: background-color 0.3s ease;
}

.subtitle-mode-label:hover {
  background-color: var(--hover-color);
}

.subtitle-mode-label input[type="radio"] {
  cursor: pointer;
}

#subtitle-converter-container .supported-formats {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

#subtitle-converter-container .format-badge {
  padding: 4px 10px;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #4a90e2;
  color: white;
}

/* 按钮样式 */
.action-btn,
.control-btn,
.option-btn {
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
  display: flex;
  align-items: center;
  color: var(--text-color);
  justify-content: center;
  gap: 8px;
  min-height: 44px;
}

.action-btn {
  background-color: var(--input-bg);
  box-shadow:
    5px 5px 10px var(--shadow-color),
    -5px -5px 10px rgba(255, 255, 255, 0.3);
}

.action-btn:hover {
  box-shadow:
    3px 3px 6px var(--shadow-color),
    -3px -3px 6px rgba(255, 255, 255, 0.3);
}

.action-btn:disabled,
.action-btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.action-btn.primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow:
    5px 5px 10px var(--shadow-color),
    -5px -5px 10px rgba(255, 255, 255, 0.3);
}

.action-btn.accent {
  background-color: var(--accent-color);
  color: white;
  box-shadow:
    5px 5px 10px var(--shadow-color),
    -5px -5px 10px rgba(255, 255, 255, 0.3);
}

.control-btn {
  background-color: var(--input-bg);
  box-shadow:
    3px 3px 6px var(--shadow-color),
    -3px -3px 6px rgba(255, 255, 255, 0.3);
  font-size: 0.9rem;
  padding: 8px 15px;
}

.control-btn:hover {
  box-shadow:
    2px 2px 4px var(--shadow-color),
    -2px -2px 4px rgba(255, 255, 255, 0.3);
}

.control-btn.primary {
  background-color: var(--primary-color);
  color: white;
}

.control-btn.accent {
  background-color: var(--accent-color);
  color: white;
}

.control-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed !important;
}

.option-btn {
  background-color: transparent;
  border: 1px solid transparent;
}

.option-btn.active {
  background-color: rgba(74, 144, 226, 0.1);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* 歌词输入区域 */
#lyric-textarea {
  width: 100%;
  min-height: 150px;
  max-height: 500px;
  height: auto;
  padding: 15px;
  border: none;
  border-radius: 12px;
  resize: vertical;
  background-color: var(--input-bg);
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
  margin-bottom: 15px;
  font-size: 1rem;
  color: var(--text-color);
  overflow-y: auto;
  overflow-x: hidden;
  transition: height 0.1s ease;
}

#lyric-textarea.manual-resize {
  transition: none;
}

/* 移除滚动条 - WebKit浏览器 */
#lyric-textarea::-webkit-scrollbar {
  display: none;
}

/* 移除滚动条 - Firefox */
#lyric-textarea {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* PC端样式 */
@media (min-width: 768px) {
  #lyric-textarea {
    min-height: 200px;
    max-height: 675px;
    height: 200px;
  }
}

.lyric-input-options {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

/* 歌词预览区域 */
.lyric-preview {
  min-height: 250px;
  max-height: 300px;
  overflow-y: auto;
  overflow-x: hidden; /* 隐藏水平滚动条 */
  padding: 15px;
  border-radius: 12px;
  background-color: var(--input-bg);
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
  margin-bottom: 15px;
  color: var(--text-color);
  /* 隐藏垂直滚动条 - Firefox */
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* 隐藏垂直滚动条 - WebKit浏览器 */
.lyric-preview::-webkit-scrollbar {
  display: none;
}

.lyric-block {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lyric-block.active {
  background-color: rgba(var(--primary-color-rgb), 0.15);
}

.lyric-block:hover {
  background-color: var(--hover-color);
}

.lyric-time {
  min-width: 80px;
  font-family: monospace;
  color: rgb(0, 139, 0);
  opacity: 0.7;
  margin-right: 15px;
  text-shadow: 1px 1px 1px #fff;
}

.lyric-text {
  flex: 1;
}

.lyric-text.empty {
  color: var(--text-color);
  opacity: 0.5;
  font-style: italic;
}

.add-blank-lyric {
  text-align: right;
}

/* 打节奏控制区域 */
.process-mode-container {
  margin-bottom: 15px;
}

.mode-options {
  display: flex;
  gap: 15px;
  margin-top: 8px;
}

.mode-label {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

/* 解析模式选项样式 */
.parsing-mode-container {
  margin-top: 10px;
  padding: 12px;
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.02);
}

.parsing-mode-container h4 {
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 500;
}

.parsing-mode-options {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.parsing-mode-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 6px;
  transition: background-color 0.3s ease;
}

.parsing-mode-label:hover {
  background-color: var(--hover-color);
}

.parsing-mode-label input[type="radio"] {
  cursor: pointer;
}

.timing-navigation,
.timing-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.timing-info {
  margin: 15px 0;
  padding: 10px;
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.03);
}

.lyric-context {
  margin: 15px 0;
}

.previous-lyric,
.current-lyric,
.next-lyric {
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.previous-lyric .lyric-time,
.current-lyric .lyric-time,
.next-lyric .lyric-time {
  min-width: 80px;
  font-family: monospace;
  color: #666;
  font-size: 14px;
  line-height: 1.4;
  margin-top: 2px;
  flex-shrink: 0;
}

.previous-lyric .lyric-text,
.current-lyric .lyric-text,
.next-lyric .lyric-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.current-lyric.highlight {
  background-color: rgba(74, 144, 226, 0.15);
  border-left: 3px solid #4a90e2;
}

/* 下拉菜单 */
.menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: #666;
  padding: 5px;
  border-radius: 4px;
}

.dropdown-menu {
  position: absolute;
  right: 10px;
  background-color: var(--dropdown-bg);
  border-radius: 8px;
  box-shadow: 0 4px 12px var(--shadow-color);
  min-width: 150px;
  z-index: 100;
  display: none;
}

.dropdown-menu.active {
  display: block;
}

.dropdown-item {
  padding: 10px 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dropdown-item:hover {
  background-color: #f5f5f5;
}

.dropdown-item.remove {
  color: #d9534f;
}

/* 时间调整区域 */
.adjustment-controls {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

#time-adjust {
  flex: 1;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background-color: var(--input-bg);
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.7);
}

/* 弹窗样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: none; /* 默认隐藏 */
  justify-content: center;
  align-items: center;
  z-index: 1000; /* 确保在菜单之上 */
}

.modal {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal h3 {
  margin-bottom: 15px;
  font-size: 1.3rem;
}

#edit-lyric-textarea {
  width: 100%;
  min-height: 150px;
  margin-bottom: 20px;
}

.modal-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* 占位文本 */
.placeholder-text {
  color: #999;
  text-align: center;
  padding: 40px 20px;
  font-style: italic;
}

/* 预览界面样式 */
#preview-interface {
  padding: 20px 0;
}

.preview-main {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

/* 元数据模块样式 */
.metadata-container {
  margin: 20px 0;
  background-color: var(--input-bg);
  border-radius: 12px;
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
  overflow: hidden;
}

.metadata-header {
  padding: 15px 20px;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  transition: all 0.3s ease;
}

.metadata-header:hover {
  background-color: var(--hover-color);
}

.metadata-header h3 {
  margin: 0;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-color);
}

.metadata-header h3 i {
  transition: transform 0.3s ease;
}

.metadata-container.active .metadata-header h3 i {
  transform: rotate(180deg);
}

.metadata-content {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.3s ease-out,
    padding 0.3s ease-out;
}

.metadata-container.active .metadata-content {
  max-height: 600px;
  padding: 0 20px 20px 20px;
  overflow-y: auto;
}

.metadata-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 15px;
}

.metadata-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.metadata-item label {
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.7;
  font-weight: 500;
}

.metadata-item input[type="text"],
.metadata-item input[type="number"] {
  padding: 8px 12px;
  border: none;
  border-radius: 8px;
  background-color: var(--input-bg);
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
  font-size: 1rem;
  color: var(--text-color);
  transition: all 0.3s ease;
}

.metadata-item input[type="text"]:focus,
.metadata-item input[type="number"]:focus {
  outline: none;
  box-shadow:
    inset 3px 3px 6px var(--shadow-color),
    inset -3px -3px 6px rgba(255, 255, 255, 0.3);
}

.metadata-item input::placeholder {
  color: var(--text-color);
  opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .metadata-grid {
    grid-template-columns: 1fr;
  }

  .collapse-panel-btn,
  .expand-panel-btn {
    display: none !important;
  }

  .input-panel.collapsed {
    display: flex !important;
  }
}

.sync-lyric-container {
  height: 400px;
  overflow-y: auto;
  margin: 20px 0;
  padding: 20px;
  background-color: var(--input-bg);
  border-radius: 12px;
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
  scroll-behavior: smooth;
}

.sync-lyric-container::-webkit-scrollbar {
  width: 8px;
}

.sync-lyric-container::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.sync-lyric-container::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  transition: background 0.3s;
}

.sync-lyric-container::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

.sync-lyric-display {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.sync-lyric-line {
  padding: 10px 15px;
  border-radius: 8px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 15px;
  opacity: 0.6;
  cursor: pointer;
}

.sync-lyric-line:hover {
  background-color: rgba(74, 144, 226, 0.1);
  opacity: 0.8;
}

.sync-lyric-line.current {
  background-color: #4a90e2;
  color: white;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
  opacity: 1;
}

.sync-lyric-line.current .sync-time {
  color: white !important;
}

.sync-time {
  min-width: 80px;
  font-family: monospace;
  font-size: 14px;
  line-height: 1.4;
  margin-top: 2px;
  flex-shrink: 0;
  color: rgba(0, 0, 0, 0.8);
}

.sync-text-container {
  flex: 1;
  min-width: 0;
}

.sync-text {
  font-size: 18px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

.preview-audio {
  width: 100%;
  margin: 15px 0;
  padding: 10px;
  background-color: var(--card-bg);
  border-radius: 8px;
}

.preview-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  gap: 10px;
  margin-top: 20px;
}

/* 界面切换动画 */
#edit-interface,
#preview-interface {
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.hidden {
  display: none !important;
}

footer {
  text-align: center;
  margin-top: 20px;
  padding: 10px;
  color: var(--text-color);
  font-size: 14px;
  position: relative;
}

/* 主题切换和GitHub按钮 */
.floating-buttons {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}

.floating-button {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 8px var(--shadow-color);
  transition: all 0.3s ease;
  border: none;
  font-size: 20px;
}

.floating-button:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 12px var(--shadow-color);
}

.theme-toggle {
  background-color: var(--accent-color);
}

.github-link {
  background-color: #333;
}

/* 编辑弹窗样式 */
.edit-lyric-form {
  margin: 15px 0;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  color: #333;
}

#edit-time-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-family: monospace;
  margin-bottom: 10px;
}

#edit-text-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  min-height: 80px;
  resize: vertical;
}

/* 预览界面样式 */
#preview-interface {
  padding: 20px 0;
}

.preview-main {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.sync-lyric-container {
  height: 400px;
  overflow-y: auto;
  margin: 20px 0;
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  box-shadow:
    inset 2px 2px 5px rgba(0, 0, 0, 0.1),
    inset -2px -2px 5px rgba(255, 255, 255, 0.7);
  scroll-behavior: smooth;
}

/* 双语歌词样式 */
.sync-translation {
  display: block;
  font-size: 0.9rem;
  color: rgba(0, 0, 0, 0.5);
  margin-top: 3px;
  font-style: italic;
}

.sync-lyric-line.current .sync-translation {
  color: rgba(255, 255, 255, 0.9);
  font-weight: normal;
}

.sync-lyric-display {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.sync-lyric-line {
  padding: 10px 16px;
  margin: 4px 0;
  border-radius: 6px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  gap: 12px;
  opacity: 0.5;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.sync-lyric-line:hover {
  opacity: 0.8;
  background-color: rgba(0, 0, 0, 0.05);
  transform: translateX(4px);
}

.sync-lyric-line.current {
  opacity: 1;
  background-color: rgba(74, 144, 226, 0.1);
  transform: scale(1.02) translateX(8px);
  box-shadow: 0 2px 8px rgba(74, 144, 226, 0.2);
  font-weight: 500;
  color: #4a90e2;
}

.sync-lyric-line.current::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, #4a90e2, #67c23a);
  border-radius: 2px;
}

.sync-time {
  min-width: 80px;
  font-family: monospace;
  opacity: 0.8;
  color: #ff0000;
  padding: 2px 6px;
  background-color: rgba(255, 255, 255, 1);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.sync-lyric-line.current .sync-time {
  color: #4a90e2;
  background-color: rgba(74, 144, 226, 0.1);
}

.sync-text {
  flex: 1;
  font-size: 18px;
}

.preview-controls {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* 界面切换动画 */
#edit-interface,
#preview-interface {
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

#edit-interface.hidden,
#preview-interface.hidden {
  display: none;
}

toast-notification {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 10px 20px;
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  border-radius: 4px;
  transition: transform 0.3s ease;
  z-index: 1000;
}

.toast-notification.show {
  transform: translateX(-50%) translateY(0);
}

.lyric-line {
  padding: 8px 12px;
  border-bottom: 1px solid #eee;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
  border-radius: 6px;
  margin-bottom: 4px;
}

.lyric-line:hover {
  background-color: #f8f9fa;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.lyric-line.current {
  background-color: #e8f4fd;
  border-left: 3px solid #4a90e2;
  font-weight: 500;
}

.lyric-line.selected {
  background-color: #e6f7ff;
  border-left: 3px solid #1890ff;
}

.lyric-number {
  min-width: 25px;
  font-family: monospace;
  font-weight: bold;
  color: #4a5568;
  margin-right: 8px;
  text-align: center;
}

.lyric-content {
  flex: 1;
  word-break: break-all;
  margin-right: 10px;
  color: #6e6e6e;
}

/* 歌词菜单按钮 */
.lyric-menu {
  display: flex;
  gap: 4px;
  margin-left: 10px;
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.lyric-line:hover .lyric-menu {
  opacity: 1;
}

/* PC端菜单按钮显示 */
.lyric-menu .menu-btn {
  display: flex;
}

/* 移动端菜单按钮隐藏 */
@media (max-width: 768px) {
  .lyric-menu .menu-btn {
    display: none;
  }
}

.menu-btn {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 4px;
  background-color: #e0e5ec;
  color: #4a5568;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  box-shadow:
    2px 2px 5px rgba(0, 0, 0, 0.1),
    -2px -2px 5px rgba(255, 255, 255, 0.7);
}

.menu-btn:hover {
  background-color: #4a90e2;
  color: white;
  transform: translateY(-1px);
  box-shadow:
    3px 3px 8px rgba(0, 0, 0, 0.15),
    -3px -3px 8px rgba(255, 255, 255, 0.7);
}

.menu-btn.delete-btn:hover {
  background-color: #e53e3e;
}

.menu-btn.select-btn {
  background-color: #48bb78;
  color: white;
}

.menu-btn.select-btn:hover {
  background-color: #38a169;
  transform: translateY(-1px);
  box-shadow:
    3px 3px 8px rgba(0, 0, 0, 0.15),
    -3px -3px 8px rgba(255, 255, 255, 0.7);
}

.menu-btn i {
  font-size: 12px;
}

/* 提示框样式 */
.toast-notification {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 10px 20px;
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  border-radius: 4px;
  transition: transform 0.3s ease;
  z-index: 1000;
}

.toast-notification.show {
  transform: translateX(-50%) translateY(0);
}

/* 预览界面样式 */
#preview-interface {
  padding: 20px 0;
}

.preview-main {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.sync-lyric-container {
  height: 400px;
  overflow-y: auto;
  margin: 20px 0;
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  box-shadow:
    inset 2px 2px 5px rgba(0, 0, 0, 0.1),
    inset -2px -2px 5px rgba(255, 255, 255, 0.7);
}

.sync-lyric-display {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.sync-lyric-line {
  padding: 10px 15px;
  border-radius: 8px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 15px;
}

.sync-lyric-line.current {
  background-color: #4a90e2;
  color: white;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.sync-time {
  min-width: 80px;
  font-family: monospace;
  opacity: 0.8;
}

.sync-text {
  flex: 1;
  color: var(--lrc-play-color);
  font-size: 18px;
  text-shadow: 0px 0px 1px #fff;
}

.preview-controls {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* 界面切换动画 */
#edit-interface,
#preview-interface {
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

#edit-interface.hidden,
#preview-interface.hidden {
  display: none;
}

/* 编辑弹窗样式 */
.edit-lyric-form {
  margin: 15px 0;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  color: #333;
}

#edit-time-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-family: monospace;
  margin-bottom: 10px;
}

#edit-text-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  min-height: 80px;
  resize: vertical;
}

/* 响应式设计 */
@media (max-width: 768px) {
  main {
    flex-direction: column;
  }

  .timing-navigation,
  .timing-buttons,
  .preview-controls {
    justify-content: center;
  }

  .action-btn,
  .control-btn {
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  /* 移动端歌词菜单样式 */
  .lyric-menu {
    position: relative;
    display: inline-block;
    margin-left: 8px;
    z-index: 101;
  }

  .lyric-menu .menu-btn {
    display: none;
  }

  .lyric-menu .menu-toggle {
    display: flex;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 4px;
    background-color: #e0e5ec;
    color: #4a5568;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow:
      2px 2px 5px rgba(0, 0, 0, 0.1),
      -2px -2px 5px rgba(255, 255, 255, 0.7);
  }

  .lyric-menu .menu-toggle:hover {
    background-color: #4a90e2;
    color: white;
    transform: translateY(-1px);
    box-shadow:
      3px 3px 8px rgba(0, 0, 0, 0.15),
      -3px -3px 8px rgba(255, 255, 255, 0.7);
  }

  .lyric-menu .menu-toggle i {
    font-size: 14px;
  }

  .lyric-menu .dropdown-menu {
    position: absolute;
    top: 0;
    right: 100%;
    background-color: white;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 8px;
    z-index: 102;
    display: none;
    min-width: 120px;
    margin-right: 8px;
  }

  .lyric-menu.show .dropdown-menu {
    display: block;
  }

  .lyric-menu .menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.2s ease;
  }

  .lyric-menu .menu-item:hover {
    background-color: #f7fafc;
  }

  .lyric-menu .menu-item i {
    font-size: 12px;
    width: 16px;
  }

  .lyric-menu .menu-item.delete-item:hover {
    color: #e53e3e;
  }
}

/* 预览界面播放控制按钮 */
.preview-timing-buttons {
  display: flex;
  gap: 10px;
  margin-top: 15px;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
}

/* LRC内容显示样式 */
.lrc-content-display {
  width: 100%;
  height: 300px;
  font-family: monospace;
  font-size: 14px;
  line-height: 1.4;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background-color: #f9f9f9;
  resize: none;
  white-space: pre;
  overflow: auto;
}

.lrc-content-display:focus {
  outline: none;
  border-color: #4a90e2;
  box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

/* 逐字处理模式样式 */
.char-span {
  display: inline-block;
  transition: all 0.2s ease;
  margin-right: 1px;
}

.char-highlight {
  color: #f2ff00;
  font-weight: bold;
  text-shadow: 0 0 2px rgb(255, 255, 255);
}

.char-processed {
  color: #4caf50;
}

.char-highlight-playing {
  color: #ff5722;
  font-weight: bold;
  text-shadow: 0 0 3px rgba(255, 87, 34, 0.4);
}

/* 音频数据校验时间样式 */
#audio-fix-time-btn {
  /* 宽度和边距现在由 .audio-fix-buttons 容器控制 */
}

.audio-fix-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

.audio-fix-buttons .action-btn {
  flex: 1;
}

.audio-fix-result {
  margin-bottom: 15px;
  padding: 15px;
  background-color: var(--input-bg);
  border-radius: 8px;
  box-shadow:
    inset 2px 2px 5px var(--shadow-color),
    inset -2px -2px 5px rgba(255, 255, 255, 0.3);
}

.audio-info-display {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.audio-info-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-label {
  font-weight: 600;
  color: var(--text-color);
}

.info-value {
  color: var(--primary-color);
  font-family: monospace;
}

.waveform-container {
  width: 100%;
  height: 100px;
  margin-bottom: 15px;
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
  overflow: hidden;
}

#waveform-canvas {
  width: 100%;
  height: 100%;
}

.fix-results-scroll {
  max-height: 300px;
  overflow-y: auto;
}

.fix-results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.fix-results-table th,
.fix-results-table td {
  padding: 8px 6px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.fix-results-table th {
  background-color: var(--primary-color);
  color: white;
  position: sticky;
  top: 0;
}

.fix-results-table tr:hover {
  background-color: var(--hover-color);
}