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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #4a90e2;
    color: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

/* 状态栏样式 */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.score, .progress {
    font-size: 1.1em;
    font-weight: bold;
    color: #4a90e2;
}

/* 内容区域样式 */
.content {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* 场景信息样式 */
.scene-info {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e8f0fe;
}

.scene-info h2 {
    color: #4a90e2;
    margin-bottom: 10px;
    font-size: 1.8em;
}

.scene-info p {
    color: #666;
    font-size: 1.1em;
}

/* 场景图片样式 */
.scene-image-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#scene-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-height: 300px;
    object-fit: cover;
}

/* 对话区域样式 */
.conversation-area {
    margin-bottom: 30px;
}

.conversation {
    max-height: 400px;
    overflow-y: auto;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.message {
    margin-bottom: 15px;
    padding: 10px 15px;
    border-radius: 18px;
    max-width: 80%;
    clear: both;
}

.message.other {
    background-color: #e3f2fd;
    color: #1565c0;
    float: left;
    border-bottom-left-radius: 5px;
}

.message.user {
    background-color: #4a90e2;
    color: white;
    float: right;
    border-bottom-right-radius: 5px;
}

.message .speaker {
    font-weight: bold;
    margin-right: 10px;
}

/* 问题区域样式 */
.question-area {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.question h3 {
    color: #4a90e2;
    margin-bottom: 20px;
    font-size: 1.3em;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.option {
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    background-color: white;
    border-radius: 8px;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.option:hover {
    border-color: #4a90e2;
    background-color: #f0f8ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.option.selected {
    border-color: #4a90e2;
    background-color: #e3f2fd;
}

.option.correct {
    border-color: #4caf50;
    background-color: #e8f5e9;
    color: #2e7d32;
}

.option.incorrect {
    border-color: #f44336;
    background-color: #ffebee;
    color: #c62828;
}

.option.disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.option.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* 反馈区域样式 */
.feedback {
    margin-bottom: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    text-align: center;
    font-weight: bold;
}

.feedback.correct {
    background-color: #e8f5e9;
    border-color: #4caf50;
    color: #2e7d32;
}

.feedback.incorrect {
    background-color: #ffebee;
    border-color: #f44336;
    color: #c62828;
}

/* 控制按钮样式 */
.controls {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.btn-primary {
    background-color: #4a90e2;
    color: white;
}

.btn-primary:hover {
    background-color: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background-color: #90a4ae;
    color: white;
}

.btn-secondary:hover {
    background-color: #78909c;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-success {
    background-color: #4caf50;
    color: white;
}

.btn-success:hover {
    background-color: #388e3c;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 响应式设计 */
/* 实时对话功能样式 */
.real-time-chat {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #e8f0fe;
}

.real-time-chat h3 {
    color: #4a90e2;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.chat-history {
    max-height: 300px;
    overflow-y: auto;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    margin-bottom: 15px;
}

.chat-input {
    display: flex;
    gap: 10px;
}

#chat-message {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1em;
    transition: all 0.3s ease;
}

#chat-message:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

.chat-input .btn {
    min-width: 100px;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 2em;
    }
    
    .content {
        padding: 20px;
    }
    
    .status-bar {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .message {
        max-width: 95%;
    }
    
    .controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .chat-input {
        flex-direction: column;
    }
    
    .chat-input .btn {
        min-width: auto;
    }
}