/* 关卡2专用CSS样式 */

/* 加载覆盖层样式 */
.level2-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.level2-loading-content {
    text-align: center;
    color: var(--text-primary);
}

.level2-loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: level2-spin 1s ease-in-out infinite;
    margin: 0 auto 20px;
}

@keyframes level2-spin {
    to { transform: rotate(360deg); }
}

.level2-loading-message {
    font-size: 18px;
    color: var(--text-primary);
    margin: 0;
}

/* 游戏容器样式 */
.level2-game-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.01);
    border-radius: var(--border-radius-xl);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* 游戏标题区域 */
.level2-game-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.level2-game-title {
    font-size: 35px;
    color: var(--primary-color);
    margin: 0;
    font-weight: bold;
}

/* 游戏屏幕样式 */
.level2-screen {
    display: none;
}

.level2-screen.active {
    display: flex;
    flex-direction: column;
    min-height: 600px;
    justify-content: space-between;
}

/* 统计信息栏 - 上部分 */
.level2-stats-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.01);
    padding: 15px 20px;
    border-radius: var(--border-radius-large);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.level2-level-info h2 {
    margin: 0;
    font-size: 28px;
    color: var(--text-secondary);
    font-weight: 600;
}

.level2-progress-info {
    display: flex;
    gap: 20px;
    font-size: 20px;
    color: var(--text-primary);
}

#question-counter, #score-display {
    font-weight: 500;
}

/* 问题显示区域 - 中部分 */
.level2-question-container {
    background-color: rgba(255, 255, 255, 0.01);
    padding: 30px;
    border-radius: var(--border-radius-large);
    margin-bottom: 20px;
    border: 2px solid var(--border-color);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.level2-question-header {
    text-align: center;
    margin-bottom: 30px;
}

.level2-question-prompt {
    font-size: 24px;
    color: var(--text-primary);
    margin: 0 0 15px 0;
    font-weight: 500;
}

.level2-target-word {
    font-size: 45px;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 10px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0);
    border-radius: var(--border-radius);
    border: none;
    display: inline-block;
}

.level2-word-phonetic {
    font-size: 20px;
    color: #7f8c8d;
    font-style: italic;
}

.level2-word-phonetic.hidden {
    display: none;
}

/* 选项容器样式 */
.level2-options-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
}

/* 选项按钮样式 */
.level2-option {
    padding: 25px 30px;
    background-color: rgba(255, 255, 255, 0.01);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 35px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    text-align: center;
}

.level2-option:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.2);
}

.level2-option.selected {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

.level2-option.correct {
    background-color: #2ecc71;
    color: white;
    border-color: #27ae60;
}

.level2-option.incorrect {
    background-color: #e74c3c;
    color: white;
    border-color: #c0392b;
}

/* 紧急选项样式 */
.level2-emergency-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

/* 反馈区域 */
.level2-feedback-container {
    text-align: center;
    margin: 20px 0;
    padding: 15px;
    border-radius: var(--border-radius);
    order: 2;
    background-color: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
}

.level2-feedback-container.hidden {
    display: none;
}

/* 反馈样式 */
.level2-feedback {
    padding: 15px 25px;
    border-radius: var(--border-radius);
    font-size: 20px;
    font-weight: 500;
    margin: 15px 0;
}

.level2-feedback.feedback-correct {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.level2-feedback.feedback-incorrect {
    background-color: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

/* 进度导航 */
.level2-progress-navigation {
    background-color: rgba(255, 255, 255, 0.03);
    padding: 15px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
}

.level2-progress-items {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.level2-progress-item {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 500;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.level2-progress-item.current {
    background-color: var(--primary-color);
    color: var(--text-primary);
    transform: scale(1.1);
}

.level2-progress-item.completed {
    background-color: var(--primary-hover);
    color: var(--text-primary);
}

.level2-progress-item:hover {
    transform: scale(1.05);
}

/* 导航按钮区域 - 下部分 */
.level2-navigation-buttons {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-top: 20px;
    order: 3;
    background-color: rgba(255, 255, 255, 0.01);
    padding: 10px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.level2-nav-btn {
    flex: 1;
    padding: 15px 25px;
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.level2-nav-btn:hover:not(:disabled) {
    background-color: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
}

.level2-nav-btn:disabled {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-light);
    color: var(--border-light);
    cursor: not-allowed;
    transform: none;
}

/* 返回主菜单按钮样式 */
#back-to-menu-button {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--border-light);
}

#back-to-menu-button:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* 手动导航按钮 */
#manual-navigation-button {
    display: block;
    margin: 20px auto;
    padding: 15px 35px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 20px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#manual-navigation-button:hover {
    background-color: #2980b9;
}

/* 按钮通用样式 */
.level2-button {
    padding: 15px 25px;
    border: none;
    border-radius: 6px;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.level2-button.primary {
    background-color: #3498db;
    color: white;
}

.level2-button.primary:hover {
    background-color: #2980b9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .level2-game-container {
        padding: 15px;
    }
    
    .level2-game-title {
        font-size: 30px;
    }
    
    .level2-target-word {
        font-size: 30px;
    }
    
    .level2-options-container {
        grid-template-columns: 1fr;
    }
    
    .level2-navigation-buttons {
        flex-direction: column;
    }
    
    .level2-stats-display {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

/* 滚动条样式 */
.level2-game-container::-webkit-scrollbar {
    width: 8px;
}

.level2-game-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.level2-game-container::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

.level2-game-container::-webkit-scrollbar-thumb:hover {
    background: #555;
}