/**
 * 优化渲染器样式 - 第一阶段
 * 
 * 为OptimizedStreamRenderer和相关组件提供样式支持
 */

/* ==================== 流式渲染指示器 ==================== */

.streaming-content {
    position: relative;
    transition: opacity 0.3s ease;
}

/* 流式内容平滑过渡 (新增优化) */
.result-content {
    /* 启用硬件加速 */
    transform: translateZ(0);
    will-change: contents;
    
    /* 防止内容跳动 */
    overflow-anchor: auto;
}

/* 新内容淡入动画 */
.streaming-new-content {
    opacity: 0;
    transform: translateY(8px);
    animation: streamContentIn 0.4s ease forwards;
}

@keyframes streamContentIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 流式渲染时的平滑效果 */
.result-content.streaming {
    /* 减少重排重绘 */
    contain: layout style;
}

/* 内容更新平滑效果 */
.content-updated {
    transition: opacity 0.2s ease;
}

.stream-rendering-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

.stream-indicator-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: stream-pulse 1.5s ease-in-out infinite;
}

@keyframes stream-pulse {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* ==================== 渲染错误样式 ==================== */

.render-error {
    background: var(--card-bg);
    border: 1px solid #ef4444;
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 1rem 0;
}

.render-error .error-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: #fef2f2;
    border-radius: 50%;
    margin: 0 auto 1rem;
    color: #ef4444;
}

[data-theme="dark"] .render-error .error-icon {
    background: rgba(239, 68, 68, 0.1);
}

.render-error .error-text {
    text-align: center;
    color: #ef4444;
    font-weight: 500;
    margin-bottom: 1rem;
}

.render-error .error-content {
    background: var(--hover-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.render-error .error-details {
    margin-top: 1rem;
}

.render-error .error-details summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.5rem 0;
}

.render-error .error-details summary:hover {
    color: var(--text-color);
}

/* ==================== 性能监控样式 ==================== */

.performance-stats {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    margin: 1rem 0;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.performance-stats h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-color);
    font-family: inherit;
}

.performance-stats .stat-item {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border-color);
}

.performance-stats .stat-item:last-child {
    border-bottom: none;
}

.performance-stats .stat-label {
    color: var(--text-secondary);
}

.performance-stats .stat-value {
    color: var(--text-color);
    font-weight: 500;
}

.performance-stats .stat-value.good {
    color: #10b981;
}

.performance-stats .stat-value.warning {
    color: #f59e0b;
}

.performance-stats .stat-value.error {
    color: #ef4444;
}

/* ==================== 渲染模式切换器 ==================== */

.render-mode-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.render-mode-switcher label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.render-mode-switcher select {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    color: var(--text-color);
    font-size: 0.875rem;
    cursor: pointer;
}

.render-mode-switcher select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.render-mode-status {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.render-mode-status .status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
}

.render-mode-status .status-indicator.warning {
    background: #f59e0b;
}

.render-mode-status .status-indicator.error {
    background: #ef4444;
}

/* ==================== 增量渲染动画 ==================== */

.incremental-block {
    animation: incremental-fade-in 0.3s ease-out;
}

@keyframes incremental-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 缓存指示器 ==================== */

.cache-indicator {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    opacity: 0.8;
    pointer-events: none;
}

.cache-indicator.hit {
    background: #10b981;
}

.cache-indicator.miss {
    background: #f59e0b;
}

/* ==================== 响应式设计 ==================== */

@media (max-width: 768px) {
    .stream-rendering-indicator {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    .render-error {
        padding: 1rem;
    }
    
    .render-error .error-icon {
        width: 40px;
        height: 40px;
    }
    
    .performance-stats {
        padding: 0.75rem;
        font-size: 0.8125rem;
    }
    
    .render-mode-switcher {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.375rem;
    }
    
    .render-mode-status {
        margin-left: 0;
        align-self: flex-end;
    }
    
    /* 移动端优化 (新增) */
    .streaming-new-content {
        animation-duration: 0.25s; /* 移动端更快的动画 */
    }
    
    .result-content {
        /* 移动端减少动画以提升性能 */
        will-change: auto;
    }
}

/* ==================== 暗色主题适配 ==================== */

[data-theme="dark"] .stream-rendering-indicator {
    background: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .performance-stats {
    background: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .render-mode-switcher {
    background: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .render-mode-switcher select {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

/* ==================== 调试模式样式 ==================== */

.debug-mode .streaming-content {
    border: 2px dashed var(--primary-color);
    padding: 1rem;
    position: relative;
}

.debug-mode .streaming-content::before {
    content: 'STREAMING MODE';
    position: absolute;
    top: -10px;
    left: 10px;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 4px;
}

.debug-mode .incremental-block {
    border-left: 3px solid #10b981;
    padding-left: 0.5rem;
    margin: 0.5rem 0;
}

.debug-mode .cache-indicator {
    display: block;
    position: static;
    margin: 0.5rem 0;
    opacity: 1;
}

/* ==================== 用户偏好适配 ==================== */

/* 用户偏好：减少动画 (新增) */
@media (prefers-reduced-motion: reduce) {
    .streaming-new-content {
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .stream-indicator {
        transition: none;
    }
    
    .content-updated {
        transition: none;
    }
}

/* ==================== 打印样式 ==================== */

@media print {
    .stream-rendering-indicator,
    .render-mode-switcher,
    .performance-stats,
    .cache-indicator {
        display: none;
    }
    
    .streaming-content {
        border: none;
        padding: 0;
    }
    
    .render-error {
        border: 1px solid #ccc;
        background: #f9f9f9;
    }
    
    /* 打印时禁用动画 */
    .streaming-new-content {
        animation: none;
        opacity: 1;
        transform: none;
    }
}