/**
 * 内容自然化优化界面样式
 * 提供专业的内容自然化优化界面样式
 */

/* 主容器样式 */
.content-naturalization-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--bg-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* 标题区域 */
.content-naturalization-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.content-naturalization-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.content-naturalization-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
}

/* 表单区域 */
.content-naturalization-form {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* 字段组样式 */
.field-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.field-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.field-group label::before {
    content: '';
    width: 4px;
    height: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* 文本区域样式 */
.content-textarea {
    min-height: 200px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    transition: all 0.3s ease;
    background: var(--input-bg);
    color: var(--text-primary);
}

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

/* 选择框样式 */
.content-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* 复选框组样式 */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.checkbox-item:hover {
    background: var(--hover-bg);
}

.checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #667eea;
}

.checkbox-item label {
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
    margin: 0;
}

.checkbox-item label::before {
    display: none;
}

/* 描述文本样式 */
.field-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    line-height: 1.4;
    font-style: italic;
}

/* 按钮区域 */
.content-naturalization-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.content-naturalization-btn {
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    min-width: 140px;
    justify-content: center;
}

.content-naturalization-btn.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

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

.content-naturalization-btn.secondary {
    background: var(--secondary-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.content-naturalization-btn.secondary:hover {
    background: var(--hover-bg);
    border-color: #667eea;
}

.content-naturalization-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 结果区域 */
.content-naturalization-result {
    margin-top: 2rem;
    padding: 2rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--result-bg);
    position: relative;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-actions {
    display: flex;
    gap: 0.5rem;
}

.result-action-btn {
    padding: 0.5rem;
    border: none;
    border-radius: 6px;
    background: var(--secondary-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-action-btn:hover {
    background: var(--hover-bg);
    transform: scale(1.05);
}

/* 质量分析区域 */
.quality-analysis {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--analysis-bg);
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.quality-analysis-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.quality-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.quality-metric {
    text-align: center;
    padding: 1rem;
    background: var(--metric-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.metric-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-score {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: white;
}

.metric-score.excellent {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
}

.metric-score.good {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
}

.metric-score.average {
    background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
}

.metric-score.poor {
    background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
}

/* 对比视图 */
.comparison-view {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1.5rem;
}

.comparison-panel {
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--panel-bg);
}

.comparison-panel-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

/* 加载状态 */
.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 错误状态 */
.error-state {
    text-align: center;
    padding: 2rem;
    color: #f56565;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .content-naturalization-container {
        padding: 1rem;
        margin: 0.5rem;
    }
    
    .content-naturalization-title {
        font-size: 2rem;
    }
    
    .content-naturalization-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .content-naturalization-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .comparison-view {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .quality-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .content-naturalization-title {
        font-size: 1.75rem;
    }
    
    .quality-metrics {
        grid-template-columns: 1fr;
    }
    
    .result-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .result-actions {
        width: 100%;
        justify-content: space-between;
    }
}

/* 暗色主题适配 */
@media (prefers-color-scheme: dark) {
    .content-naturalization-container {
        background: var(--dark-bg);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }
    
    .content-textarea,
    .content-select,
    .checkbox-group {
        background: var(--dark-input-bg);
        border-color: var(--dark-border-color);
        color: var(--dark-text-primary);
    }
    
    .content-naturalization-result {
        background: var(--dark-result-bg);
        border-color: var(--dark-border-color);
    }
    
    .quality-analysis {
        background: var(--dark-analysis-bg);
    }
    
    .quality-metric {
        background: var(--dark-metric-bg);
        border-color: var(--dark-border-color);
    }
}

/* 动画效果 */
.content-naturalization-container {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.field-group {
    animation: slideInLeft 0.4s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.content-naturalization-result {
    animation: slideInRight 0.4s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 工具提示样式 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--tooltip-bg);
    color: var(--tooltip-text);
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.85rem;
    line-height: 1.4;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 进度条样式 */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--progress-bg);
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--tag-bg);
    color: var(--tag-text);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin: 0.25rem;
}

.tag.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* 统计信息样式 */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--stats-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}