/* 长图拼接工具专用样式 */

/* ==================================
   基础布局优化
   ================================== */
.long-image-main {
    padding: 0;
    min-height: calc(100vh - 120px);
}

/* 继承基础布局，但针对长图优化 */
.workspace-container {
    display: grid;
    grid-template-columns: minmax(320px, 320px) minmax(300px, 380px) 1fr minmax(280px, 320px);
    gap: 0;
    height: calc(100vh - 160px);
    min-height: 600px;
    position: relative;
    padding: 0 25px 25px;
}

/* ==================================
   第一栏：上传+拼接方式
   ================================== */
.column-upload {
    border-right: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.08);
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
    position: relative;
    z-index: 10;
}

/* 拼接方式选择样式 */
.direction-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.direction-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.direction-option:hover {
    border-color: var(--primary-light);
    background: var(--primary-color)08;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.direction-option.active {
    border-color: var(--primary-color);
    background: var(--primary-color)10;
    box-shadow: var(--shadow-md);
}

.direction-option.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
}

.direction-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.direction-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.direction-option:hover .direction-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.direction-preview-boxes {
    display: flex;
    gap: 2px;
    padding: 4px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    border: 1px solid var(--border-light);
}

.vertical-boxes {
    flex-direction: column;
    width: 24px;
    height: 48px;
}

.horizontal-boxes {
    flex-direction: row;
    width: 48px;
    height: 24px;
}

.preview-box {
    background: var(--primary-color);
    border-radius: 1px;
    flex: 1;
    opacity: 0.7;
    transition: var(--transition);
}

.direction-option.active .preview-box {
    opacity: 1;
    background: var(--primary-dark);
}

.direction-info {
    flex: 1;
}

.direction-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.direction-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
}

.direction-option.active .direction-info h4 {
    color: var(--primary-color);
}

/* 拼接设置样式 */
.splice-settings {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.setting-label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.setting-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--primary-color);
}

.checkmark {
    position: relative;
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    background: var(--bg-primary);
    transition: var(--transition);
}

.setting-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.setting-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    font-weight: bold;
}

.setting-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.3;
    margin: 0;
    padding-left: 22px;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.number-input {
    flex: 1;
    padding: 0.5rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.8rem;
    text-align: center;
}

.number-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color)20;
}

.input-unit {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 20px;
}

/* ==================================
   第二栏：分组管理（继承并优化）
   ================================== */
.sort-hint {
    padding: 0.8rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.sort-hint i {
    color: var(--primary-color);
    font-size: 0.8rem;
}

/* ==================================
   第三栏：长图预览区域
   ================================== */
.long-image-container {
    flex: 1;
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    overflow: auto;
    border-radius: 0 0 12px 12px;
    /* 自定义滚动条 */
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-secondary);
}

.long-image-container::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.long-image-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.long-image-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
    opacity: 0.7;
}

.long-image-container::-webkit-scrollbar-thumb:hover {
    opacity: 1;
    background: var(--primary-dark);
}

.long-image-container::-webkit-scrollbar-corner {
    background: var(--bg-secondary);
}

.canvas-wrapper {
    position: relative;
    display: inline-block;
    min-width: 0;
    min-height: 0;
}

#longImageCanvas {
    display: block;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    background: white;
    max-width: none;
    max-height: none;
}

/* 长图信息面板 */
.long-image-info-panel {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
    box-shadow: var(--shadow-md);
    min-width: 140px;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 10;
}

.long-image-info-panel.show {
    opacity: 1;
    transform: translateY(0);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
    font-size: 0.7rem;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    color: var(--text-primary);
    font-weight: 600;
    font-family: monospace;
}

/* 预览控制栏 */
.preview-controls {
    padding: 0.8rem 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-radius: 0 0 12px 12px;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.zoom-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
}

.zoom-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--primary-color)08;
}

.zoom-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.zoom-level {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 40px;
    text-align: center;
    padding: 0.2rem 0.4rem;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

/* 滚动指示器 */
.scroll-indicator {
    flex: 1;
    max-width: 200px;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    position: relative;
    margin: 0 1rem;
}

.scroll-thumb {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
    width: 0%;
    transition: width 0.2s ease;
}

/* ==================================
   第四栏：参数调整（优化）
   ================================== */
.column-settings .slider-wrapper {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.column-settings .slider {
    flex: 1;
    height: 4px;
    border-radius: 2px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.column-settings .slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.column-settings .slider::-webkit-slider-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.2);
    box-shadow: var(--shadow-md);
}

.column-settings .slider-value {
    min-width: 45px;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    padding: 0.2rem 0.4rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

/* 压缩级别映射显示 */
.compression-level-1 { color: #ef4444; }
.compression-level-2 { color: #f97316; }
.compression-level-3 { color: #eab308; }
.compression-level-4 { color: #84cc16; }
.compression-level-5 { color: #22c55e; }
.compression-level-6 { color: #06b6d4; }
.compression-level-7 { color: #3b82f6; }
.compression-level-8 { color: #8b5cf6; }
.compression-level-9 { color: #a855f7; }
.compression-level-10 { color: #d946ef; }

/* ==================================
   长图特有的空状态和加载状态
   ================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
    color: var(--text-muted);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-muted);
    opacity: 0.3;
    margin-bottom: 0.5rem;
}

.empty-state h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0 0 0.5rem 0;
}

.empty-state p {
    font-size: 0.9rem;
    margin: 0 0 1rem 0;
    line-height: 1.5;
    max-width: 240px;
}

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.loading-state p {
    animation: fadeInOut 2s ease-in-out infinite;
    font-size: 0.9rem;
    margin: 0;
}

/* ==================================
   响应式设计
   ================================== */
@media (max-width: 1400px) {
    .workspace-container {
        grid-template-columns: minmax(300px, 300px) minmax(280px, 320px) 1fr minmax(260px, 280px);
    }
}

@media (max-width: 1200px) {
    .workspace-container {
        grid-template-columns: minmax(280px, 280px) minmax(260px, 280px) 1fr minmax(240px, 260px);
    }
    
    .direction-option {
        padding: 1rem;
    }
    
    .direction-info h4 {
        font-size: 0.9rem;
    }
    
    .direction-info p {
        font-size: 0.75rem;
    }
}

@media (max-width: 992px) {
    .workspace-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr auto;
        gap: 8px;
        height: auto;
        min-height: calc(100vh - 160px);
    }
    
    .workspace-column {
        border-radius: 12px !important;
        margin: 0 !important;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08) !important;
        border: 1px solid var(--border-color) !important;
        max-height: none !important;
    }
    
    .column-upload {
        order: 1;
        max-height: 500px;
        overflow-y: auto;
    }
    
    .column-groups {
        order: 2;
        max-height: 400px;
    }
    
    .column-preview {
        order: 3;
        min-width: auto;
        min-height: 500px;
    }
    
    .column-settings {
        order: 4;
        max-height: 600px;
        overflow-y: auto;
    }
    
    .direction-options {
        gap: 0.8rem;
    }
    
    .direction-option {
        padding: 1rem;
    }
    
    .long-image-container {
        padding: 1rem;
    }
    
    .preview-controls {
        flex-wrap: wrap;
        gap: 0.8rem;
    }
    
    .scroll-indicator {
        order: 3;
        width: 100%;
        max-width: none;
        margin: 0.5rem 0 0 0;
    }
}

@media (max-width: 768px) {
    .workspace-container {
        gap: 4px;
        padding: 0 8px;
    }
    
    .direction-options {
        gap: 0.6rem;
    }
    
    .direction-option {
        flex-direction: column;
        text-align: center;
        padding: 0.8rem;
        gap: 0.8rem;
    }
    
    .direction-preview {
        align-self: center;
    }
    
    .direction-info {
        text-align: center;
    }
    
    .splice-settings {
        gap: 1rem;
    }
    
    .setting-desc {
        padding-left: 0;
        margin-top: 0.3rem;
    }
    
    .long-image-container {
        padding: 0.8rem;
    }
    
    .long-image-info-panel {
        position: static;
        margin-bottom: 1rem;
        opacity: 1;
        transform: none;
        width: 100%;
    }
    
    .preview-controls {
        padding: 0.6rem 1rem;
    }
    
    .zoom-controls {
        gap: 0.6rem;
    }
    
    .empty-state {
        position: static;
        transform: none;
        width: 100%;
        padding: 2rem 1rem;
    }
    
    .loading-state {
        position: static;
        transform: none;
        padding: 2rem 1rem;
    }
}

@media (max-width: 480px) {
    .direction-option {
        padding: 0.6rem;
    }
    
    .direction-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .direction-info h4 {
        font-size: 0.85rem;
    }
    
    .direction-info p {
        font-size: 0.7rem;
    }
    
    .vertical-boxes {
        width: 20px;
        height: 40px;
    }
    
    .horizontal-boxes {
        width: 40px;
        height: 20px;
    }
    
    .input-group {
        flex-direction: column;
        align-items: stretch;
        gap: 0.3rem;
    }
    
    .input-unit {
        text-align: center;
    }
    
    .splice-settings {
        gap: 0.8rem;
    }
    
    .preview-controls {
        flex-direction: column;
        gap: 0.6rem;
    }
    
    .scroll-indicator {
        order: 1;
        margin: 0;
    }
    
    .zoom-controls {
        order: 2;
    }
}

/* ==================================
   暗色模式适配
   ================================== */
[data-theme="dark"] {
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --border-color: #404040;
    --border-light: #333333;
}

[data-theme="dark"] .long-image-info-panel {
    background: rgba(45, 45, 45, 0.95);
    border-color: #404040;
    color: #b3b3b3;
}

[data-theme="dark"] #longImageCanvas,
[data-theme="dark"] #fullscreenCanvas {
    background: #2d2d2d;
}

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

[data-theme="dark"] .direction-preview-boxes {
    background: var(--bg-primary);
    border-color: var(--border-color);
}

/* ==================================
   高对比度和可访问性
   ================================== */
@media (prefers-contrast: high) {
    .direction-option {
        border-width: 3px;
    }
    
    .direction-option.active {
        border-width: 3px;
        box-shadow: 0 0 0 2px var(--primary-color);
    }
    
    .long-image-info-panel {
        border-width: 2px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .direction-option,
    .direction-icon,
    .preview-box,
    .long-image-info-panel,
    .canvas-wrapper {
        transition: none;
    }
    
    .loading-state p {
        animation: none;
    }
}

/* ==================================
   打印样式
   ================================== */
@media print {
    .column-upload,
    .column-groups,
    .column-settings,
    .preview-header,
    .preview-controls {
        display: none !important;
    }
    
    .workspace-container {
        grid-template-columns: 1fr;
        gap: 0;
        height: auto;
        padding: 0;
    }
    
    .column-preview {
        box-shadow: none;
        border: none;
        margin: 0;
        border-radius: 0;
    }
    
    .long-image-container {
        padding: 0;
        background: white;
        border-radius: 0;
        overflow: visible;
    }
    
    #longImageCanvas {
        box-shadow: none;
        border-radius: 0;
        max-width: 100% !important;
        height: auto !important;
    }
    
    .long-image-info-panel {
        display: none;
    }
}

/* ==================================
   高分辨率屏幕优化
   ================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    #longImageCanvas,
    #fullscreenCanvas {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
    
    .direction-preview-boxes {
        image-rendering: pixelated;
    }
}

/* ==================================
   滚动条美化（全局）
   ================================== */
.column-upload::-webkit-scrollbar,
.column-settings::-webkit-scrollbar,
.current-images-list::-webkit-scrollbar {
    width: 6px;
}

.column-upload::-webkit-scrollbar-track,
.column-settings::-webkit-scrollbar-track,
.current-images-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.column-upload::-webkit-scrollbar-thumb,
.column-settings::-webkit-scrollbar-thumb,
.current-images-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.column-upload::-webkit-scrollbar-thumb:hover,
.column-settings::-webkit-scrollbar-thumb:hover,
.current-images-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==================================
   触摸设备优化
   ================================== */
@media (hover: none) and (pointer: coarse) {
    .direction-option:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
    }
    
    .direction-option:hover .direction-icon {
        transform: none;
    }
    
    .zoom-btn:hover {
        transform: none;
    }
    
    .long-image-container {
        /* 优化触摸滚动 */
        -webkit-overflow-scrolling: touch;
    }
}

/* ==================================
   特殊效果和动画
   ================================== */
@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.preview-box {
    animation: pulse 2s ease-in-out infinite;
}

.direction-option.active .preview-box {
    animation: none;
}

/* 长图生成进度指示 */
.generating {
    position: relative;
    overflow: hidden;
}

.generating::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(53, 190, 112, 0.2),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 拖拽排序效果 */
.current-image-item.dragging {
    opacity: 0.6;
    transform: rotate(5deg) scale(0.95);
    z-index: 1000;
    cursor: grabbing;
}

.current-image-item.drag-over {
    border-color: var(--primary-color);
    background: var(--primary-color)10;
    transform: scale(1.02);
}

/* 长图预览缩放效果 */
.canvas-wrapper.zooming {
    cursor: zoom-in;
}

.canvas-wrapper.zoomed {
    cursor: grab;
}

.canvas-wrapper.zoomed:active {
    cursor: grabbing;
}

/* 拖拽排序样式 */
.current-image-item.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
}

.current-image-item {
    transition: transform 0.2s ease;
}

/* 高亮动画 */
@keyframes highlight-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.02);
    }
}

/* 画布容器样式 */
#canvasWrapper {
    cursor: grab;
    overflow: auto;
    position: relative;
}

#canvasWrapper:active {
    cursor: grabbing;
}

/* ==================================
   预览控制性能优化
   ================================== */

/* 硬件加速优化 */
#longImageCanvas {
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
}

/* 容器滚动优化 */
.long-image-container {
    /* 禁用系统滚动条，使用transform控制 */
    overflow: hidden !important;
    /* 优化触摸滚动 */
    -webkit-overflow-scrolling: touch;
    /* 启用硬件加速 */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* canvas包装器优化 */
.canvas-wrapper {
    /* 确保不会超出容器 */
    max-width: 100%;
    max-height: 100%;
    /* 优化渲染性能 */
    contain: layout style paint;
}

/* 拖拽状态优化 */
.canvas-wrapper.dragging {
    /* 拖拽时使用GPU加速 */
    will-change: transform;
    /* 防止文本选择 */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

/* 缩放状态优化 */
.canvas-wrapper.zooming {
    /* 缩放时的性能优化 */
    will-change: transform;
    pointer-events: none;
}

/* 防止拖拽时的闪烁 */
.long-image-container * {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
}

/* 优化transform性能 */
@supports (transform: translate3d(0, 0, 0)) {
    #longImageCanvas {
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
    }
}

/* 防止在移动设备上的意外缩放 */
.long-image-container {
    touch-action: none;
    -ms-touch-action: none;
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    #longImageCanvas {
        /* 优化高分辨率屏幕的渲染 */
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 减少重绘的优化 */
.preview-controls {
    /* 控制栏使用独立层 */
    will-change: auto;
    contain: layout style;
}

/* 缩放按钮hover优化 */
.zoom-btn {
    /* 减少hover时的重绘 */
    contain: layout style paint;
}

.zoom-btn:hover {
    /* 使用transform代替其他属性变化 */
    transform: scale(1.05);
}

/* 长图信息面板优化 */
.long-image-info-panel {
    /* 独立渲染层 */
    will-change: opacity, transform;
    contain: layout style paint;
}

/* 性能监控相关样式 */
.performance-indicator {
    position: fixed;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
    z-index: 10000;
    pointer-events: none;
    display: none;
}

/* 开发模式时显示性能指示器 */
[data-debug="true"] .performance-indicator {
    display: block;
}