/* 聽寫練習統一樣式文件 */

/* 全局樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* 觸控設備優化 */
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* 允許選擇文本的元素 */
input, textarea, .word-text, .current-word {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* 觸控按鈕優化 */
button, .btn, .radio-option, .phonetic-item, [onclick] {
    cursor: pointer;
    /* 最小觸控目標尺寸 44px x 44px (Apple HIG) */
    min-height: 44px;
    touch-action: manipulation;
    /* 防止雙擊縮放 */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
}

/* 觸控反饋 */
button:active, .btn:active, .radio-option:active, .phonetic-item:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 頁面頭部 */
.header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.back-home-btn {
    position: absolute;
    left: 0;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.back-home-btn:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.header h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 表單樣式 */
.setup-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.setup-form {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: flex;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.label-icon {
    margin-right: 8px;
    font-size: 1.2rem;
}

/* 單選按鈕組 */
.radio-group {
    display: grid;
    gap: 12px;
}

.radio-option {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.7);
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.radio-option:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: #667eea;
    transform: translateY(-1px);
}

.radio-option input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid #ddd;
    border-radius: 50%;
    margin-right: 12px;
    position: relative;
    transition: all 0.3s ease;
}

.radio-option input[type="radio"]:checked + .radio-custom {
    border-color: #667eea;
    background: #667eea;
}

.radio-option input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.radio-option input[type="radio"]:checked ~ .option-text {
    color: #667eea;
    font-weight: 600;
}

.option-text {
    font-size: 1rem;
    transition: all 0.3s ease;
}

/* 選擇框和文本框 */
.form-select, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background: white;
    transition: all 0.3s ease;
}

.form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.form-hint {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
    font-size: 0.9rem;
    color: #666;
}

.word-count {
    font-weight: 600;
    color: #667eea;
}

/* 按鈕樣式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    border: 2px solid #e1e5e9;
}

.btn-secondary:hover {
    background: white;
    border-color: #667eea;
    color: #667eea;
    transform: translateY(-1px);
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
}

/* 範例區域 */
.examples-section {
    background: rgba(255, 255, 255, 0.9);
    padding: 25px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.examples-title {
    color: #333;
    font-size: 1.3rem;
    margin-bottom: 20px;
    text-align: center;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.example-card {
    background: rgba(255, 255, 255, 0.8);
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.example-card:hover {
    border-color: #667eea;
    transform: translateY(-2px);
}

.example-type {
    font-weight: 600;
    color: #667eea;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.example-content {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

/* 確認頁面樣式 */
.confirm-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.confirm-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.confirm-title {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 25px;
    text-align: center;
}

.confirm-section {
    display: grid;
    gap: 15px;
    margin-bottom: 25px;
}

.confirm-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.confirm-label {
    font-weight: 600;
    color: #333;
}

.confirm-value {
    color: #667eea;
    font-weight: 600;
}

/* 時間預估 */
.time-estimate {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-radius: 15px;
    margin-top: 20px;
}

.estimate-icon {
    font-size: 2rem;
}

.estimate-title {
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.estimate-time {
    font-size: 1.2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.estimate-note {
    font-size: 0.85rem;
    color: #666;
}

/* 內容預覽 */
.content-preview {
    background: rgba(255, 255, 255, 0.9);
    padding: 25px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.preview-title {
    color: #333;
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.preview-note {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: rgba(255, 193, 7, 0.1);
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #856404;
    border-left: 3px solid #ffc107;
}

.words-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    max-height: 300px;
    overflow-y: auto;
    padding: 10px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    background: white;
}

.word-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    font-size: 0.9rem;
}

.word-number {
    background: #667eea;
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    flex-shrink: 0;
}

.word-text {
    flex: 1;
    font-weight: 500;
}

.confirm-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

/* 提示區域 */
.tips-section {
    background: rgba(255, 255, 255, 0.9);
    padding: 25px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.tips-title {
    color: #333;
    font-size: 1.2rem;
    margin-bottom: 15px;
    text-align: center;
}

.tips-list {
    list-style: none;
    display: grid;
    gap: 10px;
}

.tips-list li {
    padding: 10px 15px;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 8px;
    border-left: 3px solid #667eea;
    font-size: 0.9rem;
    color: #333;
}

/* 練習頁面樣式 */
.practice-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.practice-status {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.status-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status-label {
    font-weight: 600;
    color: #333;
}

.status-value {
    color: #667eea;
    font-weight: 600;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 4px;
    transition: width 0.5s ease;
    width: 0%;
}

/* 主要練習區域 */
.practice-main {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    backdrop-filter: blur(10px);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 30px;
}

.current-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.state-icon {
    font-size: 4rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.state-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
}

.state-detail {
    font-size: 1rem;
    color: #666;
}

.playback-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.control-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 25px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 15px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* 語音測試按鈕特殊樣式 */
.voice-test-btn {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    color: #856404;
}

.voice-test-btn:hover {
    background: rgba(255, 193, 7, 0.2);
    border-color: rgba(255, 193, 7, 0.5);
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.3);
}

.voice-test-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.voice-test-btn:disabled:hover {
    background: rgba(255, 193, 7, 0.1);
    transform: none;
    box-shadow: none;
}

.current-word-info {
    background: rgba(102, 126, 234, 0.1);
    padding: 20px;
    border-radius: 15px;
    border: 2px solid rgba(102, 126, 234, 0.3);
}

.word-counter {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #667eea;
}

/* 完成操作 */
.completion-actions {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.completion-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 25px;
}

.completion-icon {
    font-size: 3rem;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.completion-text h3 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.completion-text p {
    color: #666;
    font-size: 1rem;
}

.completion-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 響應式設計 */

/* iPad Pro 和大屏幕平板 (1024px以上) */
@media (min-width: 1025px) {
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 30px;
    }
    
    .setup-form, .confirm-card, .practice-main {
        padding: 40px;
    }
    
    .examples-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
    
    .phonetic-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

/* iPad 橫屏和小平板 (769px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .container {
        padding: 25px;
    }
    
    .examples-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .radio-group {
        display: grid;
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .phonetic-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .phonetic-items {
        grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
    }
}

/* 手機橫屏和iPad豎屏 (481px - 768px) */
@media (max-width: 768px) and (min-width: 481px) {
    .container {
        padding: 20px;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .setup-form, .confirm-card, .practice-main {
        padding: 25px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .form-actions, .confirm-actions, .completion-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .btn {
        flex: 1;
        min-width: 140px;
    }
    
    .radio-group {
        display: grid;
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .word-counter {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .phonetic-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .phonetic-items {
        grid-template-columns: repeat(auto-fit, minmax(65px, 1fr));
        gap: 8px;
    }
}

/* 手機豎屏 (最大480px) */
@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .header {
        text-align: center;
        padding: 15px 0;
    }
    
    .header h1 {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    
    .header p {
        font-size: 0.9rem;
    }
    
    .back-home-btn {
        position: static;
        margin-bottom: 15px;
        display: inline-block;
        font-size: 0.85rem;
        padding: 8px 12px;
    }
    
    .setup-form, .confirm-card, .practice-main {
        padding: 20px 15px;
        border-radius: 15px;
    }
    
    .form-label {
        font-size: 1rem;
        margin-bottom: 8px;
    }
    
    .form-textarea {
        min-height: 150px;
        font-size: 0.9rem;
        padding: 12px;
    }
    
    .form-select {
        font-size: 0.9rem;
        padding: 10px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .example-card {
        padding: 15px;
    }
    
    .form-actions, .confirm-actions, .completion-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        justify-content: center;
        font-size: 0.9rem;
        padding: 12px 16px;
    }
    
    .radio-group {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    
    .radio-option {
        padding: 12px;
        margin-bottom: 0;
    }
    
    .option-text {
        font-size: 0.9rem;
    }
    
    .word-counter {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .confirm-card {
        padding: 20px 15px;
    }
    
    .confirm-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
        margin-bottom: 12px;
    }
    
    .confirm-label {
        font-size: 0.9rem;
    }
    
    .confirm-value {
        font-size: 0.9rem;
        font-weight: 500;
    }
    
    .time-estimate {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    
    .practice-controls {
        flex-direction: column;
        gap: 10px;
    }
    
    .control-btn {
        padding: 12px;
        font-size: 0.9rem;
    }
    
    .word-display {
        padding: 30px 20px;
        min-height: 120px;
    }
    
    .current-word {
        font-size: 1.8rem;
    }
    
    .word-info {
        font-size: 0.85rem;
        gap: 8px;
    }
    
    .progress-section {
        padding: 15px;
    }
    
    .progress-info {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* 音標對照表樣式 */
.pinyin-reference {
    margin-top: 30px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.collapsible-section {
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 20px;
    overflow: hidden;
}

.collapsible-header {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 142, 255, 0.1) 100%);
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
}

.collapsible-header:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 142, 255, 0.15) 100%);
}

.reference-title {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #4a5568;
    font-size: 1.2rem;
    font-weight: 600;
}

.title-icon {
    font-size: 1.3rem;
}

.subtitle {
    font-size: 0.85rem;
    font-weight: 400;
    color: #718096;
    margin-left: 8px;
}

.toggle-icon {
    font-size: 1.2rem;
    color: #667eea;
    transition: transform 0.3s ease;
}

.reference-content {
    padding: 25px;
    background: rgba(249, 250, 251, 0.8);
}

.reference-intro {
    background: rgba(102, 126, 234, 0.1);
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 25px;
    border-left: 4px solid #667eea;
}

.reference-intro p {
    margin: 8px 0;
    color: #4a5568;
    font-size: 0.95rem;
    line-height: 1.6;
}

.reference-intro strong {
    color: #2d3748;
}

.phonetic-table {
    margin-bottom: 30px;
}

.table-title {
    color: #2d3748;
    font-size: 1.1rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(102, 126, 234, 0.2);
}

.phonetic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.phonetic-category {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    padding: 20px;
    border: 1px solid rgba(102, 126, 234, 0.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.category-title {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 15px;
    font-size: 0.95rem;
    text-align: center;
    padding: 8px 12px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
}

.phonetic-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 8px;
}

.phonetic-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px;
    background: rgba(248, 249, 250, 0.8);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.phonetic-item:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.phonetic-item:active {
    transform: translateY(0) scale(0.95);
}

.phonetic-item .pinyin {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: #667eea;
    font-size: 1rem;
    margin-bottom: 4px;
}

.phonetic-item .chinese {
    color: #4a5568;
    font-size: 0.85rem;
    font-weight: 500;
}

.reference-tips {
    background: rgba(72, 187, 120, 0.1);
    border-radius: 15px;
    padding: 20px;
    border-left: 4px solid #48bb78;
}

.tip-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
}

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

.tip-icon {
    font-size: 1rem;
    margin-top: 2px;
}

.tip-text {
    color: #2d5016;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 動畫效果 */
@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 2000px;
    }
}

@keyframes slideUp {
    from {
        opacity: 1;
        max-height: 2000px;
    }
    to {
        opacity: 0;
        max-height: 0;
    }
}

/* 設定載入提示樣式 */
.settings-notice {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(72, 187, 120, 0.1);
    border: 1px solid rgba(72, 187, 120, 0.3);
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 20px;
    animation: slideInNotice 0.3s ease;
}

.notice-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.notice-text {
    color: #2d5016;
    font-size: 0.9rem;
    font-weight: 500;
}

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

/* 內容不匹配警告樣式 */
.content-warning {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 12px;
    padding: 15px;
    margin-top: 10px;
    animation: slideInWarning 0.3s ease;
}

.warning-icon {
    font-size: 1.2rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.warning-text {
    color: #856404;
    font-size: 0.9rem;
    line-height: 1.4;
}

.warning-text strong {
    color: #533a02;
    font-weight: 600;
}

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

/* 音標對照表在手機豎屏的額外優化 */
@media (max-width: 480px) {
    .reference-content {
        padding: 12px;
    }
    
    .reference-intro {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .reference-intro p {
        font-size: 0.85rem;
    }
    
    .collapsible-header {
        padding: 12px 15px;
    }
    
    .reference-title {
        font-size: 1rem;
    }
    
    .subtitle {
        display: none;
    }
    
    .table-title {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .phonetic-category {
        padding: 12px;
    }
    
    .category-title {
        font-size: 0.85rem;
        padding: 6px 10px;
    }
    
    .phonetic-items {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: 6px;
    }
    
    .phonetic-item {
        padding: 8px 4px;
    }
    
    .phonetic-item .pinyin {
        font-size: 0.9rem;
    }
    
    .phonetic-item .chinese {
        font-size: 0.75rem;
    }
    
    .reference-tips {
        padding: 15px;
    }
    
    .tip-text {
        font-size: 0.8rem;
    }
}