/* 错题本按钮样式 */
.error-book-btn {
    padding: 5px 10px;
    margin-left: 10px;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.error-book-btn:hover {
    background-color: #f1b0b7;
}

/* 错题本按钮容器 - 关键修改：设置为flex布局并靠右对齐 */
.error-book-btn-container {
    display: flex;
    justify-content: flex-end;
    margin-left: auto; /* 使容器靠右 */
    gap: 10px;
}

/* 已加入按钮样式 */
.error-book-btn[disabled] {
    background-color: #d4edda !important;
    color: #155724 !important;
    cursor: default;
    opacity: 1;
}

/* 答案按钮样式 */
.answer-btn {
    padding: 5px 10px;
    background-color: ##007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.answer-btn:hover {
    background-color: #007bff;
}

/* 内容项布局 - 新增样式 */
.content-item {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0px;
    padding: 0px 0;
}

/* 错题本容器样式 */
.error-book-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #fff;
    z-index: 1001;
    overflow: hidden;
}

.error-book-content {
    position: relative;
    height: 100%;
    width: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.error-book-header {
    padding: 15px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.error-book-title {
    margin: 0;
    font-size: 1.2em;
    font-weight: bold;
}

.close-error-book {
    background: none;
    border: none;
    font-size: 1.5em;
    cursor: pointer;
    color: #6c757d;
    padding: 0 10px;
}

.error-book-body {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    -webkit-overflow-scrolling: touch;
}

.error-book-item {
    margin-bottom: 15px;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.error-book-item-actions {
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.show-answer-btn {
    padding: 8px 15px;
    background-color: #c8e6c9;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
}

.show-answer-btn:hover {
    background-color: #e9ecef;
}

.remove-from-error-book {
    padding: 8px 15px;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.remove-from-error-book:hover {
    background-color: #c82333;
}

.answer {
    margin-top: 10px;
    padding: 10px;
    background-color: #f9f0ff;
    border-radius: 4px;
    border: 1px solid #c788ff;
    font-size: 15px;
    line-height: 1.5;
    width: 93%;
}

/* 错题本底部页码导航区域样式 - 修改部分 */
.error-book-footer {
    padding: 15px;
    border-top: 1px solid #eee;
    background: #f8f9fa;
    position: sticky;
    bottom: 0;
    width: 100%;
    box-sizing: border-box;
    left: 0;
    right: 0;
}

.error-book-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 25px;
    padding: 10px 15px;
    width: 100%;
    max-width: none;
    margin: 0 auto;
}

.error-book-pagination button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    min-width: 100px;
    flex-shrink: 0;
}

.error-book-pagination button:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

.error-book-pagination span {
    font-size: 1em;
    color: #6c757d;
    padding: 0 15px;
    flex-shrink: 0;
}

.error-book-empty {
    text-align: center;
    padding: 40px 20px;
    color: #6c757d;
}

.error-book-empty i {
    font-size: 3em;
    color: #dee2e6;
    margin-bottom: 15px;
    display: block;
}

body.error-book-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .error-book-btn {
        padding: 4px 8px;
        font-size: 12px;
    }
    
    .answer-btn {
        padding: 4px 8px;
        font-size: 15px;
    }
    
    .error-book-header {
        padding: 10px 15px;
    }
    
    .error-book-title {
        font-size: 1em;
    }
    
    .error-book-item {
        padding: 12px;
    }
    
    .show-answer-btn,
    .remove-from-error-book {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .error-book-pagination {
        gap: 15px;
        padding: 8px 10px;
    }
    
    .error-book-pagination button {
        padding: 8px 15px;
        font-size: 14px;
        min-width: 80px;
    }
    
    .error-book-pagination span {
        font-size: 0.9em;
        padding: 0 10px;
    }
}