/* 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;
}

.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: .4s;
}

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

/* 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: '释放以上传文件';
    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;
}

/* 面板样式 */
.input-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.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;
}

/* 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;
}

.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.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;
}

.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: 200px;
    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);
    /* 移除滚动条但保持滚动功能 */
    overflow-y: auto;
    overflow-x: hidden;
}

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

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

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

.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 */
    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;
    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;
    }
}

.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;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

/* 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);
}