/* 阅读页面样式 */

/* 阅读列表页面 */
.page-header {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin: -20px -20px 20px -20px;
}

.page-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.page-subtitle {
    font-size: 14px;
    opacity: 0.9;
}

.readings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    padding: 20px;
}

.reading-card {
    display: flex;
    align-items: center;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.reading-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.reading-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.reading-card:hover::after {
    opacity: 1;
}

.reading-card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-right: 16px;
    flex-shrink: 0;
}

.reading-card-info {
    flex: 1;
    min-width: 0;
}

.reading-card-title {
    font-size: 18px;
    color: #333;
    margin-bottom: 4px;
    font-weight: 600;
}

.reading-card-title-cn {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

.reading-card-meta {
    font-size: 12px;
    color: #999;
    display: flex;
    align-items: center;
    gap: 8px;
}

.reading-card-arrow {
    font-size: 24px;
    color: #ccc;
    margin-left: 12px;
    flex-shrink: 0;
}

.reading-completed-badge {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

/* 阅读详情页面 */
.reading-header {
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin: -20px -20px 20px -20px;
    flex-shrink: 0; /* 防止被压缩 */
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 10px 18px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    margin-bottom: 16px;
    transition: all 0.3s;
    backdrop-filter: blur(4px);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

.reading-title {
    font-size: 24px;
    margin-bottom: 8px;
    padding-left: 0;
    font-weight: 600;
}

.reading-scene {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.6;
}

/* 重点句型区域 */
.key-patterns-section {
    padding: 20px;
    background: #f8f9ff;
    margin: 0 -20px 20px -20px;
    border-bottom: 1px solid #eee;
}

.key-patterns-section h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.key-pattern-item {
    background: white;
    padding: 14px 18px;
    border-radius: 10px;
    border-left: 4px solid #667eea;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    flex: 1 1 calc(50% - 6px);
    min-width: 200px;
}

.pattern-en {
    display: block;
    font-size: 14px;
    color: #333;
    font-weight: 500;
    margin-bottom: 6px;
}

.pattern-cn {
    display: block;
    font-size: 13px;
    color: #666;
}

/* 知识点区域 */
.knowledge-points-section {
    padding: 20px;
    background: #fff8f0;
    margin: 0 -20px 20px -20px;
    border-bottom: 1px solid #eee;
}

.knowledge-points-section h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.knowledge-points-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.knowledge-point-item {
    background: white;
    padding: 14px 18px;
    border-radius: 10px;
    border-left: 4px solid #e67e22;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.knowledge-point-content {
    font-size: 14px;
    color: #333;
    line-height: 1.6;
}

/* Markdown 样式 */
.knowledge-point-content code {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.9em;
    color: #e67e22;
}

.knowledge-point-content strong {
    color: #e67e22;
    font-weight: 600;
}

/* 对话内容区域 */
.reading-content {
    padding: 20px;
    padding-bottom: 100px;
}

.dialogue-item {
    display: flex;
    align-items: flex-start;
    padding: 16px;
    margin-bottom: 12px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.dialogue-item.playing {
    background: linear-gradient(135deg, #e8f4ff 0%, #d4e8ff 100%);
    border: 2px solid #4a90d9;
    transform: scale(1.01);
    box-shadow: 0 4px 12px rgba(74, 144, 217, 0.15);
}

.dialogue-header {
    min-width: 70px;
    margin-right: 12px;
    flex-shrink: 0;
    text-align: right;
}

.dialogue-speaker {
    display: block;
    font-weight: 600;
    color: #4a90d9;
    font-size: 13px;
    background: #e8f4ff;
    padding: 3px 10px;
    border-radius: 12px;
    display: inline-block;
}

.dialogue-speaker-cn {
    display: block;
    font-size: 11px;
    color: #999;
    margin-top: 4px;
}

.dialogue-content {
    flex: 1;
    min-width: 0;
}

.dialogue-en {
    font-size: 16px;
    color: #333;
    line-height: 1.6;
    margin-bottom: 6px;
    word-wrap: break-word;
}

.dialogue-cn {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.play-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.3s;
    flex-shrink: 0;
    margin-left: 12px;
    color: white;
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.3);
}

.play-btn:hover {
    background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

/* 播放控制区域 */
.reading-controls {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    padding: 16px 20px;
    padding-bottom: max(40px, calc(env(safe-area-inset-bottom, 0px) + 20px));
    padding-left: max(20px, env(safe-area-inset-left, 20px));
    padding-right: max(20px, env(safe-area-inset-right, 20px));
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    z-index: 100;
    backdrop-filter: blur(10px);
    /* 确保在 iPad 上有足够的高度 */
    min-height: 80px;
    /* 确保不被底部虚拟home条遮挡 */
    height: auto;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.reading-controls .btn-primary,
.reading-controls .btn-secondary {
    padding: 14px 32px;
    font-size: 16px;
    border-radius: 25px;
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}

.reading-controls .btn-tertiary {
    padding: 14px 24px;
    font-size: 15px;
    border-radius: 25px;
    background: #f0f0f0;
    color: #333;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.reading-controls .btn-tertiary:hover {
    background: #e0e0e0;
}

.reading-controls .btn-tertiary.btn-completed {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    cursor: default;
}

/* 空状态 */
.empty-message {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 16px;
}

.empty-message::before {
    content: '📚';
    display: block;
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* 响应式设计 */

/* 平板设备 (768px) */
@media (max-width: 768px) {
    .page-header {
        padding: 24px 16px;
        margin: -16px -16px 16px -16px;
    }
    
    .page-header h1 {
        font-size: 24px;
    }
    
    .page-subtitle {
        font-size: 13px;
    }
    
    .readings-grid {
        grid-template-columns: 1fr;
        padding: 16px;
        gap: 12px;
    }
    
    .reading-card {
        padding: 16px;
    }
    
    .reading-card-icon {
        width: 48px;
        height: 48px;
        font-size: 24px;
        margin-right: 12px;
    }
    
    .reading-card-title {
        font-size: 16px;
    }
    
    .reading-card-title-cn {
        font-size: 13px;
    }
    
    .reading-card-meta {
        font-size: 12px;
    }
    
    .reading-header {
        padding: 16px;
        margin: -16px -16px 16px -16px;
    }
    
    .back-btn {
        padding: 8px 14px;
        font-size: 13px;
        margin-bottom: 12px;
    }
    
    .reading-title {
        font-size: 20px;
        padding: 0;
    }
    
    .reading-scene {
        font-size: 13px;
    }
    
    .key-patterns-section {
        padding: 16px;
        margin: 0 -16px 16px -16px;
    }
    
    .key-patterns-section h3 {
        font-size: 15px;
    }
    
    .key-pattern-item {
        padding: 12px 14px;
        min-width: calc(50% - 7px);
    }
    
    .pattern-en {
        font-size: 13px;
    }
    
    .pattern-cn {
        font-size: 12px;
    }
    
    .knowledge-points-section {
        padding: 16px;
        margin: 0 -16px 16px -16px;
    }
    
    .knowledge-points-section h3 {
        font-size: 15px;
    }
    
    .knowledge-point-item {
        padding: 12px 14px;
        border-radius: 8px;
    }
    
    .knowledge-point-content {
        font-size: 13px;
    }
    
    .reading-content {
        padding: 16px;
        padding-bottom: 90px;
    }
    
    .dialogue-item {
        padding: 14px;
        margin-bottom: 10px;
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        align-items: flex-start;
    }
    
    .dialogue-header {
        min-width: 60px;
        margin-right: 10px;
        margin-bottom: 0;
        display: block;
        text-align: right;
    }
    
    .dialogue-speaker {
        font-size: 12px;
        padding: 2px 8px;
    }
    
    .dialogue-speaker-cn {
        font-size: 10px;
    }
    
    .dialogue-content {
        flex: 1;
        min-width: 0;
        width: auto;
        padding-right: 0;
    }
    
    .dialogue-en {
        font-size: 15px;
    }
    
    .dialogue-cn {
        font-size: 13px;
    }
    
    .play-btn {
        position: relative;
        top: auto;
        right: auto;
        width: 40px;
        height: 40px;
        font-size: 18px;
        margin-left: 10px;
        margin-top: 0;
    }
    
    .reading-controls {
        padding: 14px 16px;
        padding-bottom: max(45px, calc(env(safe-area-inset-bottom, 0px) + 20px));
        gap: 12px;
        min-height: 80px;
    }
    
    .reading-controls .btn-primary,
    .reading-controls .btn-secondary {
        padding: 10px 24px;
        font-size: 14px;
    }
    
    .reading-controls .btn-tertiary {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* iPad 专用适配 (768px - 1024px) */
@media only screen and (min-width: 768px) and (max-width: 1024px) and (-webkit-min-device-pixel-ratio: 2) {
    .reading-controls {
        padding: 18px 24px;
        padding-bottom: max(50px, calc(env(safe-area-inset-bottom, 0px) + 24px));
        gap: 20px;
        min-height: 90px;
    }

    .reading-controls .btn-primary,
    .reading-controls .btn-secondary {
        padding: 16px 40px;
        font-size: 17px;
        border-radius: 30px;
    }

    .reading-controls .btn-tertiary {
        padding: 16px 32px;
        font-size: 16px;
        border-radius: 30px;
    }
}

/* 手机设备 (480px) */
@media (max-width: 480px) {
    .page-header {
        padding: 20px 12px;
        margin: -12px -12px 12px -12px;
        border-radius: 0;
    }
    
    .page-header h1 {
        font-size: 22px;
    }
    
    .page-subtitle {
        font-size: 12px;
    }
    
    .readings-grid {
        padding: 12px;
        gap: 10px;
    }
    
    .reading-card {
        padding: 14px 12px;
        border-radius: 10px;
    }
    
    .reading-card-icon {
        width: 44px;
        height: 44px;
        font-size: 22px;
        margin-right: 10px;
        border-radius: 10px;
    }
    
    .reading-card-title {
        font-size: 15px;
        margin-bottom: 2px;
    }
    
    .reading-card-title-cn {
        font-size: 12px;
        margin-bottom: 6px;
    }
    
    .reading-card-meta {
        font-size: 11px;
    }
    
    .reading-card-arrow {
        font-size: 20px;
    }
    
    .reading-header {
        padding: 14px 12px;
        margin: -12px -12px 12px -12px;
        border-radius: 0;
    }
    
    .back-btn {
        padding: 8px 12px;
        font-size: 12px;
        border-radius: 16px;
        margin-bottom: 10px;
    }
    
    .back-icon {
        font-size: 14px;
    }
    
    .reading-title {
        font-size: 18px;
    }
    
    .reading-scene {
        font-size: 12px;
        line-height: 1.5;
    }
    
    .key-patterns-section {
        padding: 12px;
        margin: 0 -12px 12px -12px;
    }
    
    .key-patterns-section h3 {
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .key-patterns-list {
        gap: 8px;
    }
    
    .key-pattern-item {
        padding: 10px 12px;
        flex: 1 1 calc(50% - 4px);
        min-width: auto;
        border-radius: 8px;
        border-left-width: 3px;
    }
    
    .pattern-en {
        font-size: 12px;
        margin-bottom: 4px;
    }
    
    .pattern-cn {
        font-size: 11px;
    }
    
    .knowledge-points-section {
        padding: 12px;
        margin: 0 -12px 12px -12px;
    }
    
    .knowledge-points-section h3 {
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .knowledge-point-item {
        padding: 10px 12px;
        border-radius: 8px;
        border-left-width: 3px;
    }
    
    .knowledge-point-content {
        font-size: 12px;
        line-height: 1.5;
    }
    
    .reading-content {
        padding: 12px;
        padding-bottom: 85px;
    }
    
    .dialogue-item {
        padding: 12px 10px;
        padding-right: 48px;
        margin-bottom: 8px;
        border-radius: 10px;
        display: flex;
        flex-direction: column;
        position: relative;
    }
    
    .dialogue-item > .dialogue-header,
    .dialogue-item > .dialogue-content,
    .dialogue-item > .play-btn {
        /* 确保所有子元素都是块级显示 */
    }
    
    .dialogue-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 8px;
        padding-right: 0;
    }
    
    .dialogue-speaker {
        font-size: 11px;
        padding: 3px 10px;
        background: #e8f4ff;
        border-radius: 10px;
        color: #4a90d9;
        font-weight: 500;
    }
    
    .dialogue-speaker-cn {
        font-size: 11px;
        color: #666;
        margin-left: 8px;
    }
    
    .dialogue-content {
        width: 100%;
        padding-right: 0;
    }
    
    .dialogue-en {
        font-size: 14px;
        margin-bottom: 4px;
        line-height: 1.5;
        color: #333;
        word-break: break-word;
    }
    
    .dialogue-cn {
        font-size: 12px;
        line-height: 1.4;
        color: #666;
        word-break: break-word;
    }
    
    .play-btn {
        position: absolute;
        top: 12px;
        right: 10px;
        width: 32px;
        height: 32px;
        font-size: 14px;
        margin: 0;
        box-shadow: 0 2px 4px rgba(102, 126, 234, 0.25);
    }
    
    .reading-controls {
        padding: 12px 10px;
        padding-bottom: max(45px, calc(env(safe-area-inset-bottom, 0px) + 16px));
        gap: 10px;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        min-height: 75px;
        flex-wrap: wrap;
    }
    
    .reading-controls .btn-primary,
    .reading-controls .btn-secondary,
    .reading-controls .btn-tertiary {
        padding: 10px 16px;
        font-size: 13px;
        border-radius: 20px;
        flex: 1;
        min-width: 0;
    }
}

/* 小屏手机 (360px) */
@media (max-width: 360px) {
    .page-header h1 {
        font-size: 20px;
    }
    
    .reading-card {
        padding: 12px 10px;
    }
    
    .reading-card-icon {
        display: none;
    }
    
    .reading-title {
        font-size: 17px;
    }
    
    .key-pattern-item {
        flex: 1 1 100%;
    }
    
    .key-patterns-list {
        flex-direction: column;
    }
    
    .key-pattern-item {
        width: 100%;
    }
    
    .reading-content {
        padding-bottom: 80px;
    }
    
    .dialogue-item {
        padding: 10px 8px;
        padding-right: 42px;
    }
    
    .dialogue-header {
        margin-bottom: 6px;
    }
    
    .dialogue-speaker {
        font-size: 10px;
        padding: 2px 8px;
    }
    
    .dialogue-speaker-cn {
        font-size: 10px;
        margin-left: 6px;
    }
    
    .dialogue-en {
        font-size: 13px;
        margin-bottom: 3px;
    }
    
    .dialogue-cn {
        font-size: 11px;
    }
    
    .play-btn {
        top: 10px;
        right: 8px;
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
    
    .reading-controls {
        padding: 10px 8px;
        padding-bottom: max(40px, calc(env(safe-area-inset-bottom, 0px) + 12px));
        gap: 8px;
        min-height: 70px;
    }
    
    .reading-controls .btn-primary,
    .reading-controls .btn-secondary,
    .reading-controls .btn-tertiary {
        padding: 8px 12px;
        font-size: 12px;
    }
}

/* Toast 提示样式 */
.toast {
    position: fixed;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(0, 0, 0, 0.85);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    max-width: 80%;
    text-align: center;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 加载中的持久提示 */
.toast-loading {
    background: rgba(102, 126, 234, 0.95);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
}

.toast-loading-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast-loading .toast-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: toast-spin 0.8s linear infinite;
    flex-shrink: 0;
}

.toast-message {
    font-size: 15px;
    font-weight: 500;
}

/* 持久提示（带取消按钮） */
.toast-persistent {
    background: rgba(102, 126, 234, 0.98);
    padding: 12px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.toast-persistent .toast-loading-content {
    flex: 1;
}

.toast-cancel-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
    white-space: nowrap;
}

.toast-cancel-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

@keyframes toast-spin {
    to {
        transform: rotate(360deg);
    }
}

/* 成功提示 */
.toast-success {
    background: rgba(40, 167, 69, 0.95);
}

/* 标记已读按钮完成状态 */
#mark-read-btn.btn-completed {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    cursor: default;
}

#mark-read-btn.btn-completed:hover {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

/* 移动端持久提示适配 */
@media (max-width: 480px) {
    .toast-persistent {
        width: 90%;
        max-width: none;
        left: 5%;
        transform: translateX(0) translateY(20px);
        padding: 12px 14px;
        gap: 10px;
    }

    .toast-persistent.show {
        transform: translateX(0) translateY(0);
    }

    .toast-persistent .toast-spinner {
        width: 18px;
        height: 18px;
    }

    .toast-persistent .toast-message {
        font-size: 14px;
    }

    .toast-persistent .toast-cancel-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
}

@media (max-width: 360px) {
    .toast-persistent {
        padding: 10px 12px;
        flex-direction: column;
        gap: 8px;
    }

    .toast-persistent .toast-loading-content {
        width: 100%;
        justify-content: center;
    }

    .toast-persistent .toast-cancel-btn {
        width: 100%;
        padding: 8px;
    }
}