/* 图片拼接工具专用样式 - Bootstrap优化版 */

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

.page-header {
    padding: 1rem 0;
    background: var(--bg-primary);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    animation: slideInFromTop 0.6s ease-out;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.breadcrumb a:hover {
    color: var(--primary-color);
    background: var(--primary-color)10;
}

.breadcrumb > span:last-child {
    color: var(--primary-color);
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    background: var(--primary-color)15;
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary-color)30;
}

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

/* ==================================
   四栏工作区布局
   ================================== */
.workspace-container {
    display: grid;
    grid-template-columns: minmax(300px, 300px) minmax(300px, 380px) 1fr minmax(240px, 300px);
    gap: 0;
    height: calc(100vh - 160px);
    min-height: 600px;
    position: relative;
	padding: 0 25px 25px;
}

.workspace-column {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
}

/* 第一栏：上传+画板+布局 */
.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;
}

/* 第二栏：分组管理 */
.column-groups {
    border-right: 1px solid var(--border-color);
    max-height: calc(100vh - 160px);
    overflow: hidden;
    margin-left: 8px;
    margin-right: 8px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
}

/* 第三栏：预览区域（最大） */
.column-preview {
    min-width: 50vw;
    border-radius: 12px;
    margin: 0 8px;
    position: relative;
    z-index: 5;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
}

/* 第四栏：参数+导出 */
.column-settings {
    border-left: 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;
}

/* ==================================
   面板通用样式
   ================================== */
.panel-section {
    padding: 1.2rem;
    border-bottom: 1px solid var(--border-light);
}

.panel-section:last-child {
    border-bottom: none;
    padding-bottom: 1.5rem;
}

.panel-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.panel-section h3 i {
    color: var(--primary-color);
    font-size: 1em;
}

/* ==================================
   上传功能
   ================================== */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    background: var(--bg-secondary);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color);
    background: var(--primary-color)08;
    transform: translateY(-2px);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.upload-icon {
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.8;
}

.upload-area p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin: 0;
}

.upload-or {
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
}

.upload-btn {
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: var(--shadow-sm);
}

.upload-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.upload-tips {
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border-light);
}

.upload-tips p {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ==================================
   画板尺寸
   ================================== */
.canvas-size-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    transition: var(--transition);
}

.size-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.8rem;
}

.canvas-size-option {
    padding: 0.7rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
    background: var(--bg-primary);
}

.canvas-size-option:hover {
    border-color: var(--primary-color);
    background: var(--primary-color)05;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.canvas-size-option.active {
    border-color: var(--primary-color);
    background: var(--primary-color)10;
    box-shadow: var(--shadow-sm);
}

.size-option-name {
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--text-primary);
    font-size: 0.8rem;
}

.size-option-dimensions {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.custom-size-inputs {
    display: none;
    gap: 0.5rem;
    align-items: center;
    background: var(--bg-primary);
    padding: 0.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.custom-size-inputs.show {
    display: flex;
}

.custom-size-inputs input {
    flex: 0.7;
    padding: 0.4rem 0.2rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    text-align: center;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.8rem;
}

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

.custom-size-inputs span {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ==================================
   布局选择
   ================================== */
.layout-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.layout-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.layout-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

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

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

.layout-preview {
    width: 32px;
    height: 32px;
    display: grid;
    gap: 1px;
    padding: 3px;
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.layout-preview.grid-2x2 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.layout-preview.grid-3x3 {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
}

.layout-preview.vertical-layout {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(3, 1fr);
}

.layout-preview.horizontal-layout {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: 1fr;
}

.layout-item {
    background: var(--primary-color);
    border-radius: 1px;
    opacity: 0.6;
}

.layout-option span {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.layout-option.active span {
    color: var(--primary-color);
}

/* ==================================
   分组管理 - 优化布局
   ================================== */
.groups-section {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
    border-radius: 12px 12px 0 0;
}

.groups-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 8px;
}

.groups-header > span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.groups-actions {
    display: flex;
    gap: 6px;
}

.group-limit-btn {
    background: #6c757d;
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.65rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 3px;
    transition: var(--transition);
    font-weight: 500;
}

.group-limit-btn:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.manage-groups-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.65rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 3px;
    transition: var(--transition);
    font-weight: 500;
}

.manage-groups-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.current-group-info {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
    margin-bottom: 1rem;
}

.current-group-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 0.8rem;
}

.current-group-count {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.group-quick-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.quick-action-btn {
    flex: 1;
    padding: 4px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: var(--text-secondary);
}

.quick-action-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 当前分组图片列表 - 美化布局 */
.current-group-images {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
}

.current-images-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 6px;
}

.current-images-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.8rem;
    flex: 1;
}

.current-images-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 6px;
}

.clear-current-btn {
    background: #ef4444;
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.7rem;
    cursor: pointer;
    transition: var(--transition);
    margin-left: 8px;
}

.clear-current-btn:hover {
    background: #dc2626;
}

.clear-current-btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

/* 优化的当前图片列表布局 */
.current-images-list {
    flex: 1;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    align-content: start;
    padding: 4px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.current-image-item {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
}

.current-image-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.current-image-preview {
    flex: 1;
    background-size: cover;
    background-position: center;
    position: relative;
    min-height: 60px;
}

.current-image-name {
    padding: 4px 6px;
    font-size: 0.6rem;
    color: var(--text-primary);
    text-align: center;
    background: var(--bg-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-top: 1px solid var(--border-light);
}

.current-image-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.65rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.current-image-item:hover .current-image-remove {
    display: flex;
}

.current-image-remove:hover {
    background: rgba(220, 38, 38, 0.9);
    transform: scale(1.1);
}

/* 空状态样式 */
.empty-images-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-images-state #empty-icon {
    font-size: 32px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-images-state p {
    font-size: 14px;
    margin-bottom: 16px;
}

/* 美化空状态上传按钮 */
.empty-upload-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 16px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-sm);
}

/* ==================================
   预览区域
   ================================== */
.preview-area-fullscreen {
    background: var(--bg-primary);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 100%;
}

.preview-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
    border-radius: 12px 12px 0 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.preview-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

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

.action-btn {
    width: 36px;
    height: 36px;
    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: 0.85rem;
}

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

.canvas-container {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    cursor: grab;
    overflow: hidden;
    border-radius: 0 0 12px 12px;
}

.canvas-container.dragging {
    cursor: grabbing;
}

.canvas-container.drag-over {
    background: var(--primary-color)08;
}

#mainCanvas {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    background: white;
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
    color: var(--text-muted);
}

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

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

.empty-state p {
    font-size: 0.9rem;
    margin: 0;
    max-width: 280px;
    line-height: 1.5;
}

/* 加载状态 */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.loading-state p {
    animation: fadeInOut 2s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    will-change: transform;
}

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

/* ==================================
   参数调整和导出设置
   ================================== */
.settings-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.setting-item label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.slider-wrapper {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.slider {
    flex: 1;
    height: 5px;
    border-radius: 2px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.slider::-webkit-slider-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
}

.slider-value {
    min-width: 40px;
    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);
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.color-picker-wrapper input[type="color"] {
    width: 32px;
    height: 28px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: none;
    padding: 0;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
    border-radius: var(--radius-sm);
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: calc(var(--radius-sm) - 1px);
}

.color-preview {
    flex: 1;
    height: 28px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    position: relative;
}

.color-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background: currentColor;
    border-radius: calc(var(--radius-sm) - 1px);
}

.spacing-setting.hidden {
    display: none;
}

/* 导出功能 */
.export-settings {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.select-input {
    width: 100%;
    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;
    cursor: pointer;
    transition: var(--transition);
}

.select-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color)20;
}

.export-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    box-shadow: var(--shadow-md);
    margin-top: 0.5rem;
}

.export-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.export-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-sm);
}

/* ==================================
   分组管理弹窗优化
   ================================== */
.group-management-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.group-management-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 1200px;
    height: 80vh;
    max-height: 800px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9);
    opacity: 0;
    transition: var(--transition);
}

.group-management-modal.show .group-management-content {
    transform: scale(1);
    opacity: 1;
}

.group-management-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
    flex-wrap: wrap;
    gap: 12px;
}

.group-management-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.group-management-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-close-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: none;
    border-radius: var(--radius-sm);
    width: 36px;
    height: 36px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close-btn:hover {
    background: #ef4444;
    color: white;
}

.group-management-body {
    flex: 1;
    display: flex;
    min-height: 0;
}

.groups-panel {
    width: 40%;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.groups-panel-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.groups-panel-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 16px;
}

.add-group-btn-modal {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
    font-weight: 500;
}

.add-group-btn-modal:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.groups-list {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    align-content: start;
}

/* 优化的分组卡片 - 长方形九宫格 */
.group-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    aspect-ratio: 16/10;
    display: flex;
    flex-direction: column;
}

.group-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.group-card.active {
    border-color: var(--primary-color);
    background: rgba(53, 190, 112, 0.05);
    box-shadow: var(--shadow-sm);
}

.group-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.group-card-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.group-card-count {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 4px;
}

.group-card-delete {
    position: absolute;
    top: 4px;
    right: 4px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 10px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.group-card:hover .group-card-delete {
    display: flex;
}

.group-card-delete:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* 长方形九宫格预览 */
.group-card-preview {
    flex: 1;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 1px;
    overflow: hidden;
    min-height: 60px;
}

.group-card-image {
    background-size: cover;
    background-position: center;
    border-radius: 2px;
}

/* 第九格显示+N */
.group-card-more {
    background: rgba(53, 190, 112, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--primary-color);
    font-weight: 600;
    border: 1px solid var(--primary-color);
    border-radius: 2px;
}

.group-card-empty {
    grid-column: 1 / -1;
    grid-row: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 12px;
}

.group-card-empty i {
    font-size: 16px;
    margin-bottom: 4px;
}

/* 右侧图片面板 - 提高图片质量 */
.images-panel {
    width: 60%;
    display: flex;
    flex-direction: column;
}

.images-panel-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.images-panel-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 16px;
}

.images-panel-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

.images-panel-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
}

.image-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: grab;
    transition: var(--transition);
    position: relative;
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
}

.image-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.image-card.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
}

/* 提高图片质量 - 右侧图片列表 */
.image-card-preview {
    flex: 1;
    background-size: cover;
    background-position: center;
    position: relative;
    min-height: 120px;
    /* 提高图片渲染质量 */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    background-repeat: no-repeat;
}

.image-card-name {
    padding: 8px;
    font-size: 12px;
    color: var(--text-primary);
    text-align: center;
    background: var(--bg-primary);
    word-break: break-all;
    border-top: 1px solid var(--border-light);
}

.image-card-delete {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.image-card:hover .image-card-delete {
    display: flex;
}

.image-card-delete:hover {
    background: rgba(220, 38, 38, 0.9);
    transform: scale(1.1);
}

/* ==================================
   拖拽交互
   ================================== */
.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.image-element {
    position: absolute;
    cursor: move;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
    will-change: transform;
}

.image-element:hover,
.image-element.selected {
    border-color: var(--primary-color);
}

.image-element.selected {
    box-shadow: 0 0 0 2px rgba(53, 190, 112, 0.3);
}

.resize-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border: 2px solid white;
    cursor: nw-resize;
    border-radius: 0;
}

.resize-handle.ne { 
    top: -6px; 
    right: -6px; 
    cursor: ne-resize; 
}

.resize-handle.nw { 
    top: -6px; 
    left: -6px; 
    cursor: nw-resize; 
}

.resize-handle.se { 
    bottom: -6px; 
    right: -6px; 
    cursor: se-resize; 
}

.resize-handle.sw { 
    bottom: -6px; 
    left: -6px; 
    cursor: sw-resize; 
}

.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);
    padding: 10px;
    border-radius: 6px;
    box-shadow: var(--shadow-md);
    font-size: 12px;
    color: #666;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.image-info-panel.show {
    opacity: 1;
}

/* ==================================
   右键菜单
   ================================== */
.context-menu {
    position: fixed;
    background: var(--bg-primary);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    min-width: 150px;
    z-index: 1000;
    display: none;
}

.context-menu-item {
    padding: 8px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-primary);
    transition: var(--transition);
}

.context-menu-item:hover {
    background: var(--bg-secondary);
}

.context-menu-item.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
}

.context-menu-item.disabled:hover {
    background: transparent;
}

.context-menu-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

/* ==================================
   弹窗系统
   ================================== */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.dialog-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: dialogSlideIn 0.3s ease-out;
    position: relative;
}

#groupLimitDialog {
    z-index: 10001;
}

@keyframes dialogSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.dialog-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.dialog-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.dialog-icon.warning {
    background: #fef3cd;
    color: #856404;
}

.dialog-icon.danger {
    background: #f8d7da;
    color: #721c24;
}

.dialog-icon.info {
    background: #d1ecf1;
    color: #0c5460;
}

.dialog-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.dialog-body {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 24px;
}

.dialog-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.dialog-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.dialog-btn.primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.dialog-btn.primary:hover {
    background: var(--primary-dark);
}

.dialog-btn.danger {
    background: #dc3545;
    color: white;
    border-color: #dc3545;
}

.dialog-btn.danger:hover {
    background: #c82333;
}

.dialog-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.dialog-btn.secondary:hover {
    background: var(--bg-tertiary);
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 分组限制设置 */
.group-limit-setting {
    margin-bottom: 20px;
}

.stepper-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
}

.stepper-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.stepper-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.stepper-value {
    min-width: 100px;
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 下载弹窗样式 */
.download-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.download-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    animation: dialogSlideIn 0.3s ease-out;
    position: relative;
}

.download-header {
    text-align: center;
    margin-bottom: 24px;
}

.download-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.download-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.download-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.download-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.download-option:hover {
    border-color: var(--primary-color);
    background: var(--primary-color)05;
}

.download-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-color)10;
    box-shadow: var(--shadow-sm);
}

.download-option input[type="radio"] {
    margin: 4px 0 0 0;
    accent-color: var(--primary-color);
}

.download-option-content {
    flex: 1;
}

.download-option-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.download-option-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.filename-section {
    margin-bottom: 24px;
}

.filename-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.filename-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.filename-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color)20;
}

.filename-preview {
    margin-top: 8px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    font-family: monospace;
    word-break: break-all;
}

.download-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.download-btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.download-btn.secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

.download-btn.primary {
    background: var(--primary-color);
    color: white;
}

.download-btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 修复进度弹窗居中问题 */
.progress-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.progress-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    text-align: center;
    position: relative;
}

.progress-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: white;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.progress-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.progress-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.progress-details {
    font-size: 14px;
    color: var(--text-muted);
}

/* ==================================
   通知系统
   ================================== */
.notification-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    pointer-events: none;
}

.notification {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 10px;
    max-width: 300px;
    transform: translateX(320px);
    transition: transform 0.3s ease;
    pointer-events: auto;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.notification.show {
    transform: translateX(0);
}

.notification.error {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.notification.info {
    background: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
}

.notification.warning {
    background: #fff3cd;
    color: #856404;
    border-color: #ffeaa7;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 8px;
	color: var(--bg-primary);
}

.notification-close {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: auto;
    opacity: 0.7;
    color: var(--bg-primary);
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
}

.notification-close:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.1);
}

/* 全屏模态框 */
.fullscreen-modal {
    background: rgba(0, 0, 0, 0.95);
}

.fullscreen-content {
    width: 95vw;
    height: 95vh;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.fullscreen-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
}

.fullscreen-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.fullscreen-canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: var(--bg-tertiary);
}

#fullscreenCanvas {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-xl);
}
/* 上传确认弹窗样式 */
.upload-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-dialog-overlay.show {
    opacity: 1;
}

.upload-dialog-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.upload-dialog-overlay.show .upload-dialog-content {
    transform: scale(1);
}

.upload-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid #e5e7eb;
}

.upload-dialog-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: #374151;
}

.upload-dialog-title i {
    color: #3b82f6;
}

.upload-dialog-close {
    background: none;
    border: none;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    color: #6b7280;
    transition: all 0.2s ease;
}

.upload-dialog-close:hover {
    background: #f3f4f6;
    color: #374151;
}

.upload-dialog-body {
    padding: 20px 24px;
    overflow-y: auto;
    flex: 1;
}

.upload-section-title {
    font-size: 14px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.upload-images-count {
    color: #6b7280;
    font-weight: normal;
}

/* 分组选择样式 */
.upload-group-selection {
    margin-bottom: 24px;
}

.upload-groups-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}

.upload-group-option {
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
}

.upload-group-option:hover {
    border-color: #3b82f6;
    background: #f8faff;
}

.upload-group-option.selected {
    border-color: #3b82f6;
    background: #eff6ff;
}

.upload-group-option.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: #f9fafb;
}

.upload-group-name {
    font-weight: 600;
    color: #374151;
    margin-bottom: 4px;
}

.upload-group-capacity {
    font-size: 12px;
    color: #6b7280;
}

.upload-group-capacity.full {
    color: #ef4444;
}

.create-new-group-btn {
    background: #f3f4f6;
    border: 2px dashed #d1d5db;
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #6b7280;
    font-weight: 500;
    width: 100%;
}

.create-new-group-btn:hover {
    border-color: #3b82f6;
    color: #3b82f6;
    background: #f8faff;
}

/* 图片预览网格样式 */
.upload-images-preview {
    margin-bottom: 20px;
}

.upload-images-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
    padding: 4px;
}

.upload-image-item {
    aspect-ratio: 1;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease;
    border: 2px solid transparent;
}

.upload-image-item:hover {
    transform: scale(1.05);
    border-color: #3b82f6;
}

.upload-image-preview {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* 容量信息样式 */
.upload-capacity-info {
    background: #f8faff;
    border: 1px solid #e0e7ff;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
}

.upload-capacity-info.warning {
    background: #fefbf3;
    border-color: #fbbf24;
}

.upload-capacity-info.error {
    background: #fef2f2;
    border-color: #f87171;
}

.capacity-info-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.capacity-info-title.warning {
    color: #d97706;
}

.capacity-info-title.error {
    color: #dc2626;
}

.capacity-info-detail {
    font-size: 14px;
    color: #6b7280;
}

.fullscreen-preview-img {
    max-height: calc(100vh / 2);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* 弹窗操作按钮 */
.upload-dialog-actions {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid #e5e7eb;
    justify-content: flex-end;
	border-radius: 0 0 ;
}

.upload-dialog-btn {
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    border: none;
}

.upload-dialog-btn.secondary {
    background: #f3f4f6;
    color: #374151;
}

.upload-dialog-btn.secondary:hover {
    background: #e5e7eb;
}

.upload-dialog-btn.primary {
    background: #3b82f6;
    color: white;
}

.upload-dialog-btn.primary:hover:not(:disabled) {
    background: #2563eb;
}

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

.upload-dialog-main-actions {
    display: flex;
    gap: 12px;
}

.upload-dialog-btn.tertiary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.upload-dialog-btn.tertiary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

/* 上传图片拖拽样式 */
.upload-image-item {
    cursor: grab;
    transition: all 0.2s ease;
}

.upload-image-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.upload-image-item.dragging {
    cursor: grabbing;
    opacity: 0.7;
    transform: rotate(5deg);
}

/* 分组拖拽目标样式 */
.upload-group-option.drag-over {
    background: var(--primary-color);
    background-opacity: 0.1;
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.upload-group-option.drag-over .upload-group-name {
    color: var(--primary-color);
    font-weight: 600;
}

/* 拖拽指示器 */
.upload-drag-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    pointer-events: none;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.upload-drag-indicator.show {
    opacity: 1;
}

/* 图片全屏预览样式 */
.image-fullscreen-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10001;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-fullscreen-overlay.show {
    opacity: 1;
}

.image-fullscreen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.5);
}

.image-fullscreen-title {
    color: white;
    font-size: 16px;
    font-weight: 600;
}

.image-fullscreen-close {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.image-fullscreen-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.image-fullscreen-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.image-fullscreen-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.5);
}

.image-nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: 12px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
}

.image-nav-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
}

.image-nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.image-nav-info {
    color: white;
    font-weight: 500;
    min-width: 60px;
    text-align: center;
}

/* 新增：当前分组图片选中状态样式 */
.current-image-item.selected {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(53, 190, 112, 0.3);
}

.current-image-item.selected .current-image-preview {
    border: 2px solid #35be70;
    box-shadow: 0 0 0 2px rgba(53, 190, 112, 0.2);
}

.current-image-item.selected .current-image-name {
    color: #35be70;
    font-weight: 600;
}

/* 新增：图片右键菜单样式 */
.image-context-menu {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    border: 1px solid #e0e0e0;
    padding: 8px 0;
    min-width: 160px;
    font-size: 14px;
    user-select: none;
    animation: contextMenuFadeIn 0.15s ease-out;
}

.image-context-menu .context-menu-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    cursor: pointer;
    transition: background-color 0.15s ease;
    color: #333;
}

.image-context-menu .context-menu-item:hover {
    background-color: #f5f5f5;
}

.image-context-menu .context-menu-item i {
    width: 16px;
    margin-right: 12px;
    color: #666;
    font-size: 13px;
}

.image-context-menu .context-menu-item[data-action="reset"]:hover {
    background-color: #e3f2fd;
}

.image-context-menu .context-menu-item[data-action="reset"]:hover i {
    color: #1976d2;
}

.image-context-menu .context-menu-item[data-action="select"]:hover {
    background-color: #e8f5e8;
}

.image-context-menu .context-menu-item[data-action="select"]:hover i {
    color: #35be70;
}

.image-context-menu .context-menu-item[data-action="remove"]:hover {
    background-color: #ffebee;
    color: #d32f2f;
}

.image-context-menu .context-menu-item[data-action="remove"]:hover i {
    color: #d32f2f;
}

.image-context-menu .context-menu-divider {
    height: 1px;
    background-color: #e0e0e0;
    margin: 4px 0;
}

@keyframes contextMenuFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 增强当前图片项的交互效果 */
.current-image-item {
    cursor: pointer;
    transition: all 0.2s ease;
}

.current-image-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.current-image-item:active {
    transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .upload-dialog-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .upload-images-grid {
        grid-template-columns: repeat(5, 1fr);
        max-height: 200px;
    }
    
    .upload-groups-list {
        grid-template-columns: 1fr;
    }
}
/* ==================================
   响应式设计
   ================================== */
@media (max-width: 1400px) {
    .workspace-container {
        grid-template-columns: minmax(300px, 300px) minmax(300px, 360px) 1fr minmax(240px, 260px);
    }
}

@media (max-width: 1200px) {
    .workspace-container {
        grid-template-columns: minmax(300px, 300px) minmax(300px, 240px) 1fr minmax(200px, 240px);
    }
    
    .panel-section {
        padding: 1rem;
    }
}

@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: 400px;
        overflow-y: auto;
    }
    
    .column-groups {
        order: 2;
        max-height: 500px;
    }
    
    .column-preview {
        order: 3;
        min-width: auto;
        min-height: 400px;
    }
    
    .column-settings {
        order: 4;
        max-height: 600px;
        overflow-y: auto;
    }
}

@media (max-width: 768px) {
    .workspace-container {
        gap: 4px;
        padding: 0 8px;
    }
    
    .panel-section {
        padding: 1rem;
    }
    
    .layout-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    
    .current-images-list {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }
    
    .groups-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .images-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .group-management-body {
        flex-direction: column;
    }
    
    .groups-panel,
    .images-panel {
        width: 100%;
    }
    
    .groups-panel {
        max-height: 300px;
    }
}

@media (max-width: 480px) {
    .layout-grid {
        grid-template-columns: 1fr;
    }
    
    .slider-wrapper {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .slider-value {
        align-self: flex-end;
        min-width: auto;
    }
    
    .size-options {
        grid-template-columns: 1fr;
    }
    
    .groups-actions {
        flex-direction: column;
        gap: 4px;
    }
    
    .custom-size-inputs {
        flex-direction: column;
        gap: 8px;
    }
}

/* ==================================
   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"] .upload-area {
    border-color: #404040;
    background: #2d2d2d;
}

[data-theme="dark"] .upload-area:hover,
[data-theme="dark"] .upload-area.drag-over {
    border-color: var(--primary-color);
    background: var(--primary-color)15;
}

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

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

[data-theme="dark"] .loading-overlay {
    background: rgba(26, 26, 26, 0.8);
}

/* 滚动条美化 */
.column-upload::-webkit-scrollbar,
.column-settings::-webkit-scrollbar,
.current-images-list::-webkit-scrollbar,
.groups-list::-webkit-scrollbar,
.images-panel-body::-webkit-scrollbar {
    width: 6px;
}

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

/* 可访问性增强 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
        border-top-color: var(--primary-color);
    }
}

/* 聚焦样式增强 */
.upload-btn:focus,
.export-btn:focus,
.action-btn:focus,
.select-input:focus,
.layout-option:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    #mainCanvas,
    #fullscreenCanvas {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
    
    /* 右侧图片列表使用更高质量渲染 */
    .image-card-preview {
        image-rendering: auto;
        image-rendering: high-quality;
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
        will-change: transform;
    }
}

/* 确保模态框在所有设备上正确显示 */
.modal-overlay,
.dialog-overlay,
.download-modal,
.progress-modal,
.group-management-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    overflow: auto;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .layout-option:hover,
    .upload-area:hover {
        transform: none;
    }
    
    .current-image-remove {
        display: flex;
        opacity: 0.8;
    }
    
    .group-card-delete {
        display: flex;
        opacity: 0.8;
    }
    
    .image-card-delete {
        display: flex;
        opacity: 0.8;
    }
}

/* 打印样式 */
@media print {
    .column-upload,
    .column-groups,
    .column-settings,
    .preview-header,
    .notification-container {
        display: none !important;
    }
    
    .workspace-container {
        grid-template-columns: 1fr;
    }
    
    .column-preview {
        box-shadow: none;
        border: none;
        margin: 0;
        border-radius: 0;
    }
    
    .canvas-container {
        padding: 0;
        background: white;
        border-radius: 0;
    }
}