/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4A90E2;
    --primary-dark: #3A7BC8;
    --primary-light: #E8F0FE;
    --secondary-color: #FF6B35;
    --success-color: #7ED321;
    --success-light: #E8F8D4;
    --error-color: #FF6B6B;
    --error-light: #FFE0E0;
    --warning-color: #F5A623;
    --bg-color: #F5F7FA;
    --card-bg: #FFFFFF;
    --text-primary: #2C3E50;
    --text-secondary: #7F8C8D;
    --border-color: #E1E8ED;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background-color: var(--bg-color);
    position: relative;
    overflow-x: hidden;
}

/* 页面切换 */
.page {
    display: none;
    min-height: 100vh;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 首页样式 */
.home-header {
    text-align: center;
    padding: 48px 24px 32px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #5BA3F5 100%);
    color: white;
    border-radius: 0 0 32px 32px;
}

.mascot {
    font-size: 64px;
    margin-bottom: 16px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.home-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 16px;
    opacity: 0.9;
}

.home-content {
    padding: 24px;
}

.input-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.option-btn {
    display: flex;
    align-items: center;
    padding: 20px;
    background: var(--card-bg);
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.option-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.option-btn:active {
    transform: scale(0.98);
}

.option-btn .icon {
    font-size: 32px;
    margin-right: 16px;
}

.option-btn .text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.option-btn .desc {
    font-size: 14px;
    color: var(--text-secondary);
    display: block;
    margin-top: 4px;
}

.home-footer {
    padding: 24px;
    text-align: center;
}

.stats {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    background: var(--card-bg);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.stat-icon {
    font-size: 20px;
}

.stat-item strong {
    color: var(--primary-color);
    font-size: 20px;
}

/* 页面头部 */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--card-bg);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 0 var(--border-color);
}

.back-btn, .settings-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    font-size: 20px;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.2s;
}

.back-btn:hover, .settings-btn:hover {
    background: var(--bg-color);
}

.page-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.placeholder {
    width: 40px;
}

.page-content {
    padding: 20px;
}

/* 表单样式 */
.input-section {
    margin-bottom: 20px;
}

.input-section label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.input-section input,
.input-section textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
    background: var(--card-bg);
}

.input-section input:focus,
.input-section textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.input-section textarea {
    min-height: 200px;
    resize: vertical;
}

/* 按钮样式 */
.primary-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.primary-btn:hover {
    background: var(--primary-dark);
}

.primary-btn:active {
    transform: scale(0.98);
}

.secondary-btn {
    padding: 12px 20px;
    background: var(--bg-color);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.secondary-btn:hover {
    background: var(--border-color);
}

/* 图片上传 */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--card-bg);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(74, 144, 226, 0.05);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.7;
}

.image-preview {
    margin-top: 20px;
}

.image-preview img {
    width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.preview-actions {
    display: flex;
    gap: 12px;
}

.preview-actions button {
    flex: 1;
}

.ocr-result {
    margin-top: 20px;
}

.hidden {
    display: none !important;
}

/* 内容预览 */
.content-preview {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.content-preview .sentence {
    padding: 12px;
    margin-bottom: 8px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    line-height: 1.8;
}

.content-preview .sentence:last-child {
    margin-bottom: 0;
}

/* 模式选择 */
.mode-selection {
    margin-bottom: 24px;
}

.mode-selection h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.mode-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.mode-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 12px;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.mode-btn:hover {
    border-color: var(--primary-color);
}

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

.mode-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.mode-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.mode-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ==================== 背诵页面（优化） ==================== */

/* 进度区域 */
.progress-section {
    margin-bottom: 20px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

#sentence-counter {
    font-weight: 500;
}

#progress-percent {
    font-weight: 600;
    color: var(--primary-color);
}

.progress-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #5BA3F5);
    border-radius: 3px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0%;
}

/* 内容展示区 */
.content-display {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    min-height: 180px;
    max-height: 40vh;
    overflow-y: auto;
}

.sentence-item {
    padding: 14px 16px;
    margin-bottom: 10px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    font-size: 18px;
    line-height: 1.8;
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.sentence-item:last-child {
    margin-bottom: 0;
}

/* 当前句 - 突出高亮 */
.sentence-item.current {
    background: var(--primary-light);
    border-left: 4px solid var(--primary-color);
    font-weight: 500;
    transform: scale(1.02);
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.2);
}

/* 已完成 - 正确 */
.sentence-item.completed {
    background: var(--success-light);
    border-left: 4px solid var(--success-color);
    opacity: 0.85;
}

/* 已完成 - 错误 */
.sentence-item.error {
    background: var(--error-light);
    border-left: 4px solid var(--error-color);
    opacity: 0.85;
}

/* 折叠的句子 - 减少视觉干扰 */
.sentence-item.collapsed {
    font-size: 14px;
    opacity: 0.4;
    padding: 8px 16px;
    margin-bottom: 6px;
    line-height: 1.4;
}

/* 实时语音识别结果 */
.speech-result {
    background: var(--card-bg);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 16px;
    animation: slideUp 0.3s ease;
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.15);
}

.speech-result-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.speech-result-text {
    font-size: 16px;
    color: var(--text-primary);
    min-height: 24px;
    line-height: 1.5;
}

.speech-result-text.final {
    color: var(--primary-dark);
    font-weight: 500;
}

/* 语音状态指示器 */
.voice-indicator {
    text-align: center;
    margin-bottom: 20px;
    padding: 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.voice-indicator.state-speaking {
    background: rgba(74, 144, 226, 0.08);
}

.voice-indicator.state-listening {
    background: rgba(126, 211, 33, 0.08);
}

.voice-indicator.state-waiting {
    background: rgba(245, 166, 35, 0.08);
}

.voice-indicator.state-paused {
    background: rgba(127, 140, 141, 0.08);
}

.voice-waves {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    height: 36px;
    margin-bottom: 8px;
}

.voice-waves span {
    width: 4px;
    height: 16px;
    background: var(--border-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* 默认 idle 状态 - 静止 */
.voice-waves span {
    animation: none;
    height: 16px;
    opacity: 0.4;
}

/* speaking 状态 - 蓝色缓慢波动 */
.voice-waves.speaking span {
    background: var(--primary-color);
    animation: waveSpeaking 1.2s ease-in-out infinite;
}

.voice-waves.speaking span:nth-child(1) { animation-delay: 0s; }
.voice-waves.speaking span:nth-child(2) { animation-delay: 0.15s; }
.voice-waves.speaking span:nth-child(3) { animation-delay: 0.3s; }
.voice-waves.speaking span:nth-child(4) { animation-delay: 0.45s; }
.voice-waves.speaking span:nth-child(5) { animation-delay: 0.6s; }

@keyframes waveSpeaking {
    0%, 100% { height: 16px; opacity: 0.5; }
    50% { height: 32px; opacity: 1; }
}

/* listening 状态 - 绿色快速跳动 */
.voice-waves.listening span {
    background: var(--success-color);
    animation: waveListening 0.5s ease-in-out infinite;
}

.voice-waves.listening span:nth-child(1) { animation-delay: 0s; }
.voice-waves.listening span:nth-child(2) { animation-delay: 0.08s; }
.voice-waves.listening span:nth-child(3) { animation-delay: 0.16s; }
.voice-waves.listening span:nth-child(4) { animation-delay: 0.24s; }
.voice-waves.listening span:nth-child(5) { animation-delay: 0.32s; }

@keyframes waveListening {
    0%, 100% { height: 12px; opacity: 0.4; }
    50% { height: 36px; opacity: 1; }
}

/* waiting 状态 - 橙色缓慢呼吸 */
.voice-waves.waiting span {
    background: var(--warning-color);
    animation: waveWaiting 2s ease-in-out infinite;
}

.voice-waves.waiting span:nth-child(1) { animation-delay: 0s; }
.voice-waves.waiting span:nth-child(2) { animation-delay: 0.2s; }
.voice-waves.waiting span:nth-child(3) { animation-delay: 0.4s; }
.voice-waves.waiting span:nth-child(4) { animation-delay: 0.6s; }
.voice-waves.waiting span:nth-child(5) { animation-delay: 0.8s; }

@keyframes waveWaiting {
    0%, 100% { height: 12px; opacity: 0.3; }
    50% { height: 20px; opacity: 0.7; }
}

/* paused 状态 - 灰色静止 */
.voice-waves.paused span {
    background: var(--text-secondary);
    animation: none;
    height: 12px;
    opacity: 0.3;
}

#voice-text {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

/* 麦克风按钮 */
.recitation-controls {
    text-align: center;
    margin-bottom: 24px;
}

.mic-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: none;
    background: var(--primary-color);
    color: white;
    font-size: 32px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.4);
    position: relative;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.mic-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(74, 144, 226, 0.5);
}

.mic-btn:active {
    transform: scale(0.95);
}

.mic-btn.listening {
    background: var(--success-color);
    box-shadow: 0 4px 12px rgba(126, 211, 33, 0.4);
    animation: micPulse 1.2s infinite;
}

@keyframes micPulse {
    0% { box-shadow: 0 0 0 0 rgba(126, 211, 33, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(126, 211, 33, 0); }
    100% { box-shadow: 0 0 0 0 rgba(126, 211, 33, 0); }
}

.mic-hint {
    margin-top: 10px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

/* 控制按钮组 - 优化布局 */
.control-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.ctrl-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    min-width: 64px;
    box-shadow: var(--shadow);
}

.ctrl-btn:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.ctrl-btn:active {
    transform: scale(0.95);
}

.ctrl-btn.active {
    border-color: var(--warning-color);
    background: rgba(245, 166, 35, 0.1);
}

.ctrl-icon {
    font-size: 20px;
}

.ctrl-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 填空模式样式 */
.fill-blank {
    display: inline-block;
    min-width: 60px;
    border-bottom: 2px dashed var(--primary-color);
    padding: 0 4px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    transition: var(--transition);
}

.fill-blank.revealed {
    border-bottom-style: solid;
    color: var(--primary-color);
    font-style: normal;
    font-weight: 500;
    background: rgba(74, 144, 226, 0.08);
    border-radius: 4px;
    padding: 2px 6px;
}

/* 提示模式样式 */
.hint-text {
    color: var(--secondary-color);
    font-weight: 600;
}

.hint-hidden {
    color: var(--border-color);
    letter-spacing: 2px;
}

/* ==================== 结果页面 ==================== */
.result-card {
    background: var(--card-bg);
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.score-display {
    margin-bottom: 16px;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, #5BA3F5 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: white;
}

.score-number {
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
}

.score-label {
    font-size: 14px;
    opacity: 0.9;
}

.stars {
    font-size: 24px;
    margin-bottom: 12px;
}

.result-comment {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 详细分析 */
.result-details {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.result-details h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.detail-item {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-label {
    width: 60px;
    font-size: 14px;
    color: var(--text-secondary);
}

.detail-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-color);
    border-radius: 4px;
    margin: 0 12px;
    overflow: hidden;
}

.detail-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0%;
}

.detail-value {
    width: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: right;
}

/* 错误分析 */
.error-analysis {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.error-analysis h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.error-item {
    padding: 12px;
    background: var(--error-light);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 14px;
    border-left: 3px solid var(--error-color);
}

.error-item .expected {
    color: var(--success-color);
    font-weight: 500;
}

.error-item .actual {
    color: var(--error-color);
    text-decoration: line-through;
}

.result-actions {
    display: flex;
    gap: 12px;
}

.result-actions button {
    flex: 1;
}

/* ==================== 历史记录页面 ==================== */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    padding: 16px 12px;
    border-radius: var(--radius-sm);
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.achievements {
    margin-bottom: 24px;
}

.achievements h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.achievement-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    font-size: 14px;
}

.achievement-item.unlocked {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 215, 0, 0.2) 100%);
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.achievement-item .icon {
    font-size: 24px;
}

.history-list h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.history-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    box-shadow: var(--shadow);
}

.history-item .info {
    flex: 1;
}

.history-item .title {
    font-weight: 600;
    margin-bottom: 4px;
}

.history-item .date {
    font-size: 12px;
    color: var(--text-secondary);
}

.history-item .score {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ==================== 弹窗 ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--radius);
    width: 100%;
    max-width: 400px;
    max-height: 80vh;
    overflow-y: auto;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    font-size: 24px;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.2s;
}

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

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.modal-footer button {
    flex: 1;
}

/* 语言指示器 */
.lang-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-left: 8px;
}

.lang-badge.lang-zh {
    background: rgba(74, 144, 226, 0.15);
    color: var(--primary-color);
}

.lang-badge.lang-en {
    background: rgba(126, 211, 33, 0.15);
    color: var(--success-color);
}

/* 设置项 */
.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    font-size: 14px;
    color: var(--text-primary);
}

.setting-item input[type="range"] {
    flex: 1;
    margin: 0 12px;
}

.setting-item span {
    font-size: 14px;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: right;
}

.setting-select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--card-bg);
    cursor: pointer;
    transition: var(--transition);
}

.setting-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 开关 */
.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* ==================== 响应式 ==================== */
@media (max-width: 480px) {
    #app {
        max-width: 100%;
    }
    
    .mode-options {
        grid-template-columns: 1fr;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .control-buttons {
        gap: 6px;
    }
    
    .ctrl-btn {
        padding: 10px 12px;
        min-width: 56px;
    }
    
    .ctrl-icon {
        font-size: 18px;
    }
    
    .ctrl-label {
        font-size: 11px;
    }
}

/* ==================== 动画 ==================== */
.fade-in {
    animation: fadeIn 0.3s ease;
}

.slide-up {
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== Toast 提示 ==================== */
#toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: toastIn 0.3s ease;
    white-space: nowrap;
}

.toast-info {
    background: var(--primary-color);
    color: white;
}

.toast-error {
    background: var(--error-color);
    color: white;
}

.toast-success {
    background: var(--success-color);
    color: white;
}

.toast-warning {
    background: var(--warning-color);
    color: white;
}

.toast.fade-out {
    animation: toastOut 0.3s ease forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-10px); }
}

/* 内容区域滚动条美化 */
.content-display::-webkit-scrollbar {
    width: 4px;
}

.content-display::-webkit-scrollbar-track {
    background: transparent;
}

.content-display::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.content-display::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ==================== 文字提示（语音合成降级）==================== */
.text-prompt {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    padding: 24px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    max-width: 80%;
    text-align: center;
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-primary);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.text-prompt.visible {
    opacity: 1;
    visibility: visible;
    animation: pulseIn 0.3s ease;
}

@keyframes pulseIn {
    0% { transform: translate(-50%, -50%) scale(0.9); opacity: 0; }
    50% { transform: translate(-50%, -50%) scale(1.02); }
    100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

/* ==================== 手动输入（语音识别降级）==================== */
.manual-input-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius) var(--radius) 0 0;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.manual-input-container.visible {
    transform: translateY(0);
}

.manual-input-header {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

#manual-input-text {
    width: 100%;
    min-height: 100px;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    resize: none;
    transition: var(--transition);
    font-family: inherit;
}

#manual-input-text:focus {
    outline: none;
    border-color: var(--primary-color);
}

.manual-input-actions {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.manual-input-actions button {
    flex: 1;
    padding: 12px;
}

/* ==================== 功能状态指示器 ==================== */
.capability-status {
    display: flex;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    font-size: 12px;
    margin-bottom: 12px;
}

.capability-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.capability-item.available {
    color: var(--success-color);
}

.capability-item.unavailable {
    color: var(--text-secondary);
}