/**
 * 3D预览查看器样式
 * 
 * @package Xuhuan
 * @since 1.5.0
 */

/* ==========================================================================
   3D预览区域容器
   ========================================================================== */
.tah-3d-viewer-section {
    margin: var(--spacing-xl) 0;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.tah-3d-viewer-section .section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-secondary);
}

.tah-3d-viewer-section .section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.tah-3d-viewer-section .section-title svg {
    color: var(--primary-color);
}

.tah-3d-viewer-section .section-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ==========================================================================
   3D查看器容器
   ========================================================================== */
.tah-3d-viewer-wrapper {
    position: relative;
    overflow: hidden;
}

.tah-3d-viewer-container {
    position: relative;
    width: 100%;
    min-height: 400px;
    background: #1a1a2e;
    overflow: hidden;
    /* 供分享浮层 max-width 使用 cqw，限制在 3D 容器内不裁切 */
    container-type: inline-size;
    container-name: tah-3d-viewer;
}

/* 首页/小组件嵌入仅有 id，无 .tah-3d-viewer-container 类时同样启用 cqw */
#tah-3d-viewer-container {
    container-type: inline-size;
    container-name: tah-3d-viewer;
}

.tah-3d-viewer-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

/* 全屏模式 */
.tah-3d-viewer-container.is-fullscreen {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
    border-radius: 0;
    background: #1a1a2e !important;
}

/* 全屏时确保wrapper也全屏 */
.tah-3d-viewer-container.is-fullscreen,
.tah-3d-viewer-wrapper:has(.tah-3d-viewer-container.is-fullscreen) {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
}

/* 全屏时隐藏页面其他元素 */
body.tah-3d-fullscreen-active {
    overflow: hidden !important;
}

body.tah-3d-fullscreen-active #main-content,
body.tah-3d-fullscreen-active .main-content,
body.tah-3d-fullscreen-active main,
body.tah-3d-fullscreen-active .container:not(.tah-3d-viewer-container):not(.tah-3d-viewer-wrapper),
body.tah-3d-fullscreen-active header,
body.tah-3d-fullscreen-active .site-header,
body.tah-3d-fullscreen-active #header,
body.tah-3d-fullscreen-active footer,
body.tah-3d-fullscreen-active .site-footer,
body.tah-3d-fullscreen-active #footer,
body.tah-3d-fullscreen-active .breadcrumb-wrapper,
body.tah-3d-fullscreen-active .model-detail-grid,
body.tah-3d-fullscreen-active .model-detail-content {
    visibility: hidden !important;
    pointer-events: none !important;
}

/* 确保全屏时3D容器和工具栏可见 */
body.tah-3d-fullscreen-active .tah-3d-viewer-container,
body.tah-3d-fullscreen-active .tah-3d-viewer-wrapper,
body.tah-3d-fullscreen-active .tah-3d-viewer-section {
    visibility: visible !important;
    pointer-events: auto !important;
}

/* 确保全屏时工具栏和信息面板在最上层 */
.tah-3d-viewer-container.is-fullscreen .viewer-toolbar,
.tah-3d-viewer-container.is-fullscreen .viewer-info-panel {
    z-index: 1000000 !important;
}

/* ==========================================================================
   加载状态
   ========================================================================== */
.viewer-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: rgba(26, 26, 46, 0.95);
    color: #ffffff;
    font-size: 14px;
    z-index: 10;
}

.viewer-loading .loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   错误提示
   ========================================================================== */
.viewer-error {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: rgba(26, 26, 46, 0.95);
    color: #ff6b6b;
    font-size: 14px;
    z-index: 10;
}

.viewer-error svg {
    opacity: 0.8;
}

/* ==========================================================================
   资源信息面板（左上角）
   ========================================================================== */
.viewer-info-panel {
    position: absolute;
    top: 12px;
    left: 12px;
    min-width: 200px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    border-radius: 8px;
    z-index: 20;
    color: #ffffff;
    font-size: 13px;
    line-height: 1.5;
}

.viewer-info-panel .info-panel-header {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.viewer-info-panel .info-panel-title {
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 6px;
    word-break: break-word;
}

.viewer-info-panel .info-panel-site {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.7);
}

.viewer-info-panel .site-name {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.viewer-info-panel .site-domain {
    color: rgba(255, 255, 255, 0.6);
}

.viewer-info-panel .info-panel-stats {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.viewer-info-panel .info-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
}

.viewer-info-panel .stat-label {
    color: rgba(255, 255, 255, 0.7);
}

.viewer-info-panel .stat-value {
    font-weight: 600;
    color: #ffffff;
    font-family: 'Courier New', monospace;
}

/* ==========================================================================
   工具栏
   ========================================================================== */
.viewer-toolbar {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    padding: 6px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    z-index: 20;
    flex-wrap: wrap;
    max-width: 90%;
}

.viewer-toolbar .toolbar-left,
.viewer-toolbar .toolbar-right {
    display: flex;
    align-items: center;
    gap: 4px;
}

.viewer-toolbar .toolbar-divider {
    width: 1px;
    height: 18px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 4px;
}

.viewer-toolbar .toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.viewer-toolbar .light-control {
    min-width: 120px;
    padding-right: 12px;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.viewer-toolbar .light-control label {
    display: flex;
    align-items: center;
    color: #ffd700;
}

.viewer-toolbar .range-slider {
    width: 80px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

.viewer-toolbar .range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: #ffd700;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.viewer-toolbar .range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.viewer-toolbar .range-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: #ffd700;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.toolbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    min-width: 32px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.85);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    padding: 0;
    /* 触控友好 */
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.toolbar-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.toolbar-btn:active {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(0.92);
}

.toolbar-btn.active {
    background: rgba(99, 102, 241, 0.3);
    color: var(--primary-color, #6366f1);
}

.toolbar-btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    display: block;
    flex-shrink: 0;
}

.toolbar-btn svg path,
.toolbar-btn svg circle,
.toolbar-btn svg line,
.toolbar-btn svg polyline {
    stroke: currentColor;
    fill: none;
}

/* 画笔调色板 */
.paint-palette {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    margin-left: 4px;
}

.palette-color {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.15s;
    padding: 0;
    outline: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.palette-color:hover {
    transform: scale(1.15);
}

.palette-color.active {
    border-color: #ffffff;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3), 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 调色板分隔符 */
.palette-divider {
    width: 1px;
    height: 14px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 4px;
}

/* 画笔粗细选择器 */
.palette-size {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: 2px solid transparent;
    background: rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: all 0.15s;
    padding: 0;
    outline: none;
}

.palette-size span {
    background: #ffffff;
    border-radius: 1px;
}

.palette-size:hover {
    background: rgba(255, 255, 255, 0.2);
}

.palette-size.active {
    border-color: var(--primary-color, #6366f1);
    background: rgba(99, 102, 241, 0.2);
}

/* 爆炸视图面板 */
.explode-panel {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    margin-left: 4px;
}

.explode-panel-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
    white-space: nowrap;
    margin: 0;
    cursor: default;
}

.explode-factor-slider {
    width: 80px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    outline: none;
}

.explode-factor-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary-color, #6366f1);
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.explode-factor-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary-color, #6366f1);
    cursor: pointer;
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 测量工具面板 */
.measure-panel {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 4px;
}

.measure-panel .toolbar-btn {
    padding: 4px 8px;
}

/* 帮助面板 */
.viewer-help-panel {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 380px;
    max-width: calc(100% - 40px);
    max-height: calc(100% - 80px);
    background: linear-gradient(145deg, rgba(30, 30, 45, 0.98), rgba(20, 20, 35, 0.98));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset,
        0 -1px 0 rgba(255, 255, 255, 0.1) inset;
    z-index: 100;
    overflow: hidden;
    animation: helpFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes helpFadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.help-header h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.help-header h4::before {
    content: "?";
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, var(--primary-color, #6366f1) 0%, var(--primary-dark, #4f46e5) 100%);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.help-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.help-close:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
    transform: scale(1.05);
}

.help-content {
    padding: 16px 0;
    max-height: 420px;
    overflow-y: auto;
}

/* 美化滚动条 */
.help-content::-webkit-scrollbar {
    width: 6px;
}

.help-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 3px;
}

.help-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    transition: background 0.2s;
}

.help-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

.help-section {
    padding: 16px 24px;
}

.help-section:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.help-section h5 {
    margin: 0 0 14px 0;
    font-size: 11px;
    font-weight: 700;
    color: var(--primary-color, #6366f1);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-section h5::before {
    content: "";
    display: block;
    width: 3px;
    height: 14px;
    background: var(--primary-color, #6366f1);
    border-radius: 2px;
}

.help-section ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.help-section li {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 8px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    transition: transform 0.15s ease;
}

.help-section li:hover {
    transform: translateX(4px);
}

.help-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    padding: 5px 10px;
    background: linear-gradient(180deg, rgba(60, 60, 80, 0.9) 0%, rgba(40, 40, 60, 0.9) 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.05) inset;
    font-size: 11px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', monospace;
    color: rgba(255, 255, 255, 0.95);
    white-space: nowrap;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   帮助面板 - 亮色主题适配
   ========================================================================== */
[data-theme="light"] .viewer-help-panel {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.03) inset;
}

[data-theme="light"] .help-header {
    background: rgba(0, 0, 0, 0.02);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .help-header h4 {
    color: var(--text-primary, #1a1a2e);
}

[data-theme="light"] .help-close {
    background: rgba(0, 0, 0, 0.04);
    color: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .help-close:hover {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
}

[data-theme="light"] .help-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .help-content::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .help-content::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .help-section:not(:last-child) {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .help-section li {
    color: var(--text-primary, #374151);
}

[data-theme="light"] .help-key {
    background: linear-gradient(180deg, #f3f4f6 0%, #e5e7eb 100%);
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08), 0 1px 0 rgba(255, 255, 255, 0.8) inset;
    color: var(--text-primary, #1f2937);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   操作提示
   ========================================================================== */
.viewer-hint {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    color: #ffffff;
    font-size: 12px;
    border-radius: 20px;
    opacity: 0.8;
    pointer-events: none;
    z-index: 15;
    white-space: nowrap;
}

/* ==========================================================================
   发布页3D预览选项
   ========================================================================== */
.tah-3d-preview-options {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-light);
}

.tah-3d-preview-options .options-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    font-weight: 600;
}

.tah-3d-preview-options .options-header svg {
    width: 20px;
    height: 20px;
}

.tah-3d-preview-options .preview-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s;
}

.tah-3d-preview-options .preview-toggle:hover {
    background: var(--bg-tertiary);
}

.tah-3d-preview-options .preview-toggle input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.tah-3d-preview-options .preview-toggle-info {
    flex: 1;
}

.tah-3d-preview-options .preview-toggle-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.tah-3d-preview-options .preview-toggle-desc {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* 模型/贴图选择器 */
.tah-3d-preview-options .file-selector {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.tah-3d-preview-options .file-selector-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--text-sm);
}

.tah-3d-preview-options .file-list {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
}

.tah-3d-preview-options .file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background 0.2s;
}

.tah-3d-preview-options .file-item:last-child {
    border-bottom: none;
}

.tah-3d-preview-options .file-item:hover {
    background: var(--bg-tertiary);
}

.tah-3d-preview-options .file-item.selected {
    background: var(--primary-light);
}

.tah-3d-preview-options .file-item input[type="radio"],
.tah-3d-preview-options .file-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.tah-3d-preview-options .file-item-name {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tah-3d-preview-options .file-item-size {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* 分析中状态 */
.tah-3d-preview-options .analyzing {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    color: var(--text-muted);
}

.tah-3d-preview-options .analyzing .loading-spinner {
    width: 24px;
    height: 24px;
    border-width: 2px;
}

/* 无模型提示 */
.tah-3d-preview-options .no-3d-model {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* ==========================================================================
   3D预览付费墙
   ========================================================================== */
.tah-3d-preview-paywall {
    position: relative;
    min-height: 400px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
}

.tah-3d-preview-paywall .paywall-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    filter: blur(20px);
    transform: scale(1.1);
    opacity: 0.5;
}

.tah-3d-preview-paywall .paywall-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.8) 100%);
}

.tah-3d-preview-paywall .paywall-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-xl);
    max-width: 400px;
}

.tah-3d-preview-paywall .paywall-icon {
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
}

.tah-3d-preview-paywall .paywall-icon svg {
    width: 64px;
    height: 64px;
}

.tah-3d-preview-paywall .paywall-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: #fff;
    margin: 0 0 var(--spacing-sm) 0;
}

.tah-3d-preview-paywall .paywall-desc {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.6;
}

.tah-3d-preview-paywall .paywall-desc strong {
    color: var(--warning, #f59e0b);
    font-weight: 600;
}

.tah-3d-preview-paywall .paywall-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-base);
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
}

.tah-3d-preview-paywall .paywall-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.tah-3d-preview-paywall .paywall-hint {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
    margin: var(--spacing-md) 0 0 0;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 768px) {
    .tah-3d-viewer-container {
        min-height: 300px;
        /* 优化触控体验 */
        touch-action: pan-x pan-y pinch-zoom;
    }
    
    /* 移动端隐藏左上角信息面板 */
    .viewer-info-panel {
        display: none;
    }
    
    /* 移动端工具栏 - 右侧竖向布局
     * 禁止在此使用 transform 做垂直居中：含 transform 的祖先会成为 position:fixed 的新包含块，
     * 子级 fixed 会错贴在窄工具栏上。分享面板已移出工具栏，挂到 .tah-3d-viewer-container 底部。 */
    .viewer-toolbar {
        top: 0;
        bottom: 0;
        left: auto;
        right: 8px;
        margin: auto 0;
        transform: none;
        max-width: none;
        width: auto;
        height: fit-content;
        padding: 8px 6px;
        gap: 4px;
        flex-direction: column;
        flex-wrap: nowrap;
        justify-content: center;
        align-items: center;
        max-height: calc(100% - 24px);
        overflow: visible;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .viewer-toolbar::-webkit-scrollbar {
        display: none;
    }
    
    .viewer-toolbar .toolbar-left,
    .viewer-toolbar .toolbar-right {
        flex-direction: column;
        flex-wrap: nowrap;
        gap: 4px;
        justify-content: center;
        position: relative;
    }
    
    .viewer-toolbar .toolbar-divider {
        width: 20px;
        height: 1px;
        margin: 4px 0;
    }
    
    .viewer-toolbar .light-control {
        display: none;
    }
    
    .viewer-toolbar .toolbar-group {
        flex-direction: column;
        flex-wrap: nowrap;
        gap: 4px;
    }
    
    /* 移动端按钮尺寸 */
    .toolbar-btn {
        width: 36px;
        height: 36px;
        min-width: 36px;
        min-height: 36px;
        flex-shrink: 0;
        -webkit-tap-highlight-color: transparent;
    }
    
    .toolbar-btn svg {
        width: 17px;
        height: 17px;
    }
    
    .toolbar-btn:active {
        background: rgba(255, 255, 255, 0.25);
        transform: scale(0.92);
    }
    
    .viewer-hint {
        font-size: 10px;
        padding: 6px 12px;
    }
    
    /* 移动端画笔调色板 - 底部横向排列 */
    .paint-palette {
        position: absolute;
        left: 10px;
        right: 60px;
        bottom: 12px;
        top: auto;
        transform: none;
        flex-direction: row;
        flex-wrap: nowrap;
        margin-left: 0;
        padding: 10px 12px;
        gap: 8px;
        max-height: none;
        max-width: none;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        z-index: 100;
        background: rgba(0, 0, 0, 0.7);
        backdrop-filter: blur(12px);
        border-radius: 10px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        align-items: center;
        justify-content: flex-start;
    }
    
    /* 移动端画笔调色板 - 已移动到容器直接子元素 */
    .paint-palette.mobile-panel {
        position: absolute;
        left: 10px;
        right: 60px;
        bottom: 12px;
        top: auto;
        transform: none;
    }
    
    .paint-palette::-webkit-scrollbar {
        display: none;
    }
    
    .palette-color {
        width: 28px;
        height: 28px;
        flex-shrink: 0;
    }
    
    .palette-divider {
        width: 1px;
        height: 24px;
        margin: 0 4px;
    }
    
    .palette-size {
        width: 32px;
        height: 32px;
        flex-shrink: 0;
    }
    
    /* 移动端爆炸视图面板 - 固定在3D容器底部 */
    .explode-panel {
        position: absolute !important;
        left: 50% !important;
        bottom: 12px !important;
        right: auto !important;
        top: auto !important;
        transform: translateX(-50%) !important;
        flex-direction: row !important;
        align-items: center !important;
        justify-content: center !important;
        margin: 0 !important;
        padding: 10px 20px !important;
        gap: 12px !important;
        z-index: 100 !important;
        background: rgba(0, 0, 0, 0.7) !important;
        backdrop-filter: blur(12px) !important;
        border-radius: 10px !important;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5) !important;
        width: auto !important;
        max-width: calc(100% - 80px) !important;
    }
    
    /* 移动端爆炸视图面板 - 已移动到容器直接子元素 */
    .explode-panel.mobile-panel {
        position: absolute !important;
        left: 50% !important;
        bottom: 12px !important;
        right: auto !important;
        top: auto !important;
        transform: translateX(-50%) !important;
    }
    
    .explode-panel-label {
        font-size: 13px;
    }
    
    .explode-factor-slider {
        width: 120px;
        height: 8px;
    }
    
    .explode-factor-slider::-webkit-slider-thumb {
        width: 20px;
        height: 20px;
    }
    
    .explode-factor-slider::-moz-range-thumb {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .tah-3d-viewer-section .section-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .tah-3d-viewer-section .section-title {
        font-size: var(--text-base);
    }
    
    /* 超小屏工具栏 - 保持右侧竖向 */
    .viewer-toolbar {
        right: 6px;
        padding: 6px 5px;
        gap: 3px;
    }
    
    .viewer-toolbar .toolbar-left,
    .viewer-toolbar .toolbar-right {
        gap: 3px;
    }
    
    .viewer-toolbar .toolbar-group {
        gap: 3px;
    }
    
    /* 超小屏按钮 */
    .toolbar-btn {
        width: 32px;
        height: 32px;
        min-width: 32px;
        min-height: 32px;
    }
    
    .toolbar-btn svg {
        width: 15px;
        height: 15px;
    }
    
    /* 隐藏信息面板，给工具栏更多空间 */
    .viewer-info-panel {
        display: none;
    }
    
    /* 超小屏画笔调色板 */
    .paint-palette {
        left: 8px;
        right: 48px;
        bottom: 10px;
        padding: 8px 10px;
        gap: 6px;
    }
    
    .palette-color {
        width: 24px;
        height: 24px;
    }
    
    .palette-size {
        width: 28px;
        height: 28px;
    }
    
    .palette-divider {
        height: 20px;
        margin: 0 2px;
    }
    
    .viewer-hint {
        display: none;
    }
    
    /* 超小屏爆炸视图面板 */
    .explode-panel {
        bottom: 10px !important;
        padding: 8px 14px !important;
        gap: 8px !important;
    }
    
    .explode-panel-label {
        font-size: 11px !important;
    }
    
    .explode-factor-slider {
        width: 80px !important;
    }
    
    /* 超小屏视角按钮 */
    .viewpoint-item-main {
        padding: 5px 8px;
    }
    
    .viewpoint-index {
        width: 18px;
        height: 18px;
        font-size: 10px;
    }
    
    .viewpoint-name {
        font-size: 10px;
        max-width: 50px;
    }
    
    .btn-save-viewpoint {
        padding: 5px 8px;
        font-size: 10px;
    }
}

/* ==========================================================================
   截图分享弹窗
   ========================================================================== */
.screenshot-modal {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: none;
    z-index: 1000;
}

.screenshot-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.screenshot-modal.show .screenshot-modal-overlay {
    opacity: 1;
}

.screenshot-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 600px;
    max-height: 90%;
    background: linear-gradient(145deg, rgba(30, 30, 45, 0.98), rgba(20, 20, 35, 0.98));
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    opacity: 0;
    transition: all 0.2s ease;
}

.screenshot-modal.show .screenshot-modal-content {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.screenshot-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.screenshot-modal-header h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.screenshot-modal-header h4::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary-color, #6366f1) 0%, var(--primary-dark, #4f46e5) 100%);
    border-radius: 6px;
    background-image: url("data:image/svg+xml,%3Csvg width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z'%3E%3C/path%3E%3Ccircle cx='12' cy='13' r='4'%3E%3C/circle%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 14px;
}

.screenshot-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.screenshot-modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.screenshot-modal-body {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
}

.screenshot-preview-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.screenshot-modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
}

.screenshot-format-selector {
    display: flex;
    gap: 16px;
}

.screenshot-format-selector label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    cursor: pointer;
}

.screenshot-format-selector input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color, #6366f1);
}

.screenshot-actions {
    display: flex;
    gap: 10px;
}

.screenshot-actions .btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.screenshot-actions .btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

.screenshot-actions .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
}

.screenshot-actions .btn-primary {
    background: linear-gradient(135deg, var(--primary-color, #6366f1) 0%, var(--primary-dark, #4f46e5) 100%);
    border: none;
    color: #fff;
}

.screenshot-actions .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* 亮色主题适配 */
[data-theme="light"] .screenshot-modal-content {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .screenshot-modal-header {
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .screenshot-modal-header h4 {
    color: var(--text-primary, #1a1a2e);
}

[data-theme="light"] .screenshot-modal-close {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
    color: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .screenshot-modal-body {
    background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .screenshot-modal-footer {
    border-top-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .screenshot-format-selector label {
    color: var(--text-primary, #374151);
}

[data-theme="light"] .screenshot-actions .btn-outline {
    border-color: rgba(0, 0, 0, 0.15);
    color: var(--text-primary, #374151);
}

[data-theme="light"] .screenshot-actions .btn-outline:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   视角选择器（包含作者预设视角和用户视角）
   ========================================================================== */
.viewpoint-selector {
    position: relative;
    display: inline-flex;
}

/* 移动端遮罩层 */
.viewpoint-overlay {
    display: none;
}

.viewpoint-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 8px;
    min-width: 220px;
    max-width: 280px;
    background: linear-gradient(145deg, rgba(30, 30, 45, 0.98), rgba(20, 20, 35, 0.98));
    backdrop-filter: blur(20px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 100;
}

.viewpoint-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 视角分组 */
.viewpoint-group {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.viewpoint-group:last-child {
    border-bottom: none;
}

.viewpoint-group-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    font-size: 11px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(255, 255, 255, 0.03);
}

.viewpoint-group-header svg {
    opacity: 0.7;
}

.user-viewpoint-group .viewpoint-group-header {
    color: var(--primary-color, #6366f1);
}

.user-viewpoint-group .viewpoint-group-header svg {
    opacity: 1;
}

.viewpoint-list {
    max-height: 180px;
    overflow-y: auto;
    padding: 6px;
}

.viewpoint-list::-webkit-scrollbar {
    width: 4px;
}

.viewpoint-list::-webkit-scrollbar-track {
    background: transparent;
}

.viewpoint-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
}

.viewpoint-empty {
    padding: 16px;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 12px;
}

/* 视角列表项 */
.viewpoint-item {
    display: flex;
    align-items: center;
    gap: 4px;
    width: 100%;
    border-radius: 8px;
    margin-bottom: 4px;
    transition: all 0.15s ease;
}

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

.viewpoint-item-main {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    padding: 8px 10px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
    transition: all 0.15s ease;
}

.viewpoint-item-main:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.viewpoint-index {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 5px;
    font-size: 10px;
    font-weight: 600;
    color: var(--primary-color, #6366f1);
}

.viewpoint-item-main:hover .viewpoint-index {
    background: rgba(99, 102, 241, 0.3);
}

.viewpoint-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 用户视角删除按钮 */
.viewpoint-item-delete {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.viewpoint-item-delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* 保存视角按钮区域 */
.viewpoint-save-section {
    padding: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.btn-save-viewpoint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 10px 12px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px dashed rgba(99, 102, 241, 0.4);
    border-radius: 8px;
    color: var(--primary-color, #6366f1);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-save-viewpoint:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.6);
}

.btn-save-viewpoint svg {
    opacity: 0.8;
}

/* 亮色主题适配 */
[data-theme="light"] .viewpoint-dropdown {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .viewpoint-group {
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .viewpoint-group-header {
    color: rgba(0, 0, 0, 0.5);
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .user-viewpoint-group .viewpoint-group-header {
    color: var(--primary-color, #6366f1);
}

[data-theme="light"] .viewpoint-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .viewpoint-empty {
    color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .viewpoint-item-main {
    color: var(--text-primary, #374151);
}

[data-theme="light"] .viewpoint-item-main:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-primary, #1a1a2e);
}

[data-theme="light"] .viewpoint-item-delete {
    color: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .viewpoint-item-delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

[data-theme="light"] .viewpoint-save-section {
    border-top-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .btn-save-viewpoint {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
}

/* ==========================================================================
   移动端响应式 - 截图和视角
   ========================================================================== */
@media (max-width: 768px) {
    .screenshot-modal-content {
        width: 95%;
        max-height: 95%;
    }
    
    .screenshot-preview-image {
        max-height: 280px;
    }
    
    .screenshot-modal-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .screenshot-format-selector {
        justify-content: center;
    }
    
    .screenshot-actions {
        justify-content: center;
    }
    
    /* 移动端遮罩层 - 隐藏 */
    .viewpoint-overlay {
        display: none !important;
    }
    
    .viewpoint-overlay.mobile-panel {
        display: none !important;
    }
    
    /* 移动端视角选择器 - 3D容器底部固定面板，单行横向布局 */
    .viewpoint-dropdown {
        position: absolute;
        top: auto;
        left: 10px;
        right: 60px;
        bottom: 10px;
        margin-top: 0;
        min-width: auto;
        max-width: none;
        max-height: none;
        border-radius: 10px;
        transform: none;
        opacity: 0;
        visibility: hidden;
        z-index: 100;
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(12px);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        padding: 8px 12px;
        transition: opacity 0.2s ease, visibility 0.2s ease;
        /* 横向布局 */
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 8px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .viewpoint-dropdown::-webkit-scrollbar {
        display: none;
    }
    
    .viewpoint-dropdown.show {
        opacity: 1;
        visibility: visible;
    }
    
    /* 移动端面板 - 已移动到容器直接子元素 */
    .viewpoint-dropdown.mobile-panel {
        position: absolute;
    }
    
    /* 隐藏分组标题 */
    .viewpoint-group {
        display: contents;
        border-bottom: none;
        padding: 0;
    }
    
    .viewpoint-group-header {
        display: none;
    }
    
    /* 视角列表改为水平滚动 */
    .viewpoint-list {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 6px;
        max-height: none;
        overflow: visible;
        padding: 0;
    }
    
    /* 视角项目改为紧凑按钮 */
    .viewpoint-item {
        flex: 0 0 auto;
        min-width: auto;
        margin-bottom: 0;
    }
    
    .viewpoint-item-main {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 4px;
        padding: 6px 10px;
        min-width: auto;
        background: rgba(255, 255, 255, 0.15);
        border-radius: 6px;
        text-align: center;
        white-space: nowrap;
    }
    
    .viewpoint-item-main:active {
        background: rgba(99, 102, 241, 0.4);
        transform: scale(0.95);
    }
    
    .viewpoint-index {
        width: 20px;
        height: 20px;
        font-size: 11px;
        flex-shrink: 0;
    }
    
    .viewpoint-name {
        font-size: 11px;
        max-width: 60px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    /* 用户视角项目带删除按钮 */
    .user-viewpoint-item {
        position: relative;
    }
    
    .user-viewpoint-item .viewpoint-item-delete {
        position: absolute;
        top: -4px;
        right: -4px;
        width: 16px;
        height: 16px;
        padding: 0;
        border-radius: 50%;
        background: rgba(239, 68, 68, 0.9);
    }
    
    .user-viewpoint-item .viewpoint-item-delete svg {
        width: 10px;
        height: 10px;
    }
    
    /* 保存视角按钮 - 在末尾显示 */
    .viewpoint-save-section {
        position: static;
        padding: 0;
        border-top: none;
        flex-shrink: 0;
    }
    
    .btn-save-viewpoint {
        padding: 6px 10px;
        font-size: 11px;
        border-radius: 6px;
        gap: 4px;
        background: rgba(99, 102, 241, 0.3);
        border: 1px dashed rgba(99, 102, 241, 0.5);
        white-space: nowrap;
    }
    
    .btn-save-viewpoint svg {
        width: 12px;
        height: 12px;
    }
    
    /* 移动端空状态 */
    .viewpoint-empty {
        padding: 6px 10px;
        min-width: auto;
        font-size: 11px;
        opacity: 0.6;
    }
    
    /* 用户视角分组 */
    .user-viewpoint-group {
        display: contents;
        position: static;
        padding-top: 0;
    }
}

@media (max-width: 480px) {
    .screenshot-modal-header {
        padding: 12px 16px;
    }
    
    .screenshot-modal-body {
        padding: 16px;
    }
    
    .screenshot-modal-footer {
        padding: 12px 16px;
        gap: 12px;
    }
    
    .screenshot-actions .btn {
        padding: 8px 12px;
        font-size: 12px;
    }
    
    /* 超小屏视角选择器 */
    .viewpoint-dropdown {
        left: 8px;
        right: 52px;
        bottom: 8px;
        padding: 6px 10px;
        gap: 6px;
    }
    
    .viewpoint-item-main {
        padding: 5px 8px;
        gap: 3px;
    }
    
    .viewpoint-index {
        width: 16px;
        height: 16px;
        font-size: 9px;
    }
    
    .viewpoint-name {
        font-size: 9px;
        max-width: 45px;
    }
    
    .btn-save-viewpoint {
        padding: 5px 8px;
        font-size: 9px;
    }
}

/* ==========================================================================
   保存视角弹窗
   ========================================================================== */
.viewpoint-save-modal {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: none;
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.viewpoint-save-modal.show {
    display: flex;
}

.viewpoint-save-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.viewpoint-save-modal-content {
    position: relative;
    z-index: 1;
    width: 300px;
    max-width: calc(100% - 40px);
    background: linear-gradient(145deg, rgba(30, 30, 45, 0.98), rgba(20, 20, 35, 0.98));
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.viewpoint-save-modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.viewpoint-save-modal-header h4 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: #ffffff;
}

.viewpoint-save-modal-close {
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.viewpoint-save-modal-close:hover {
    color: #ffffff;
}

.viewpoint-save-modal-body {
    padding: 20px;
}

.viewpoint-save-input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    color: #ffffff;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s, background 0.2s;
    box-sizing: border-box;
}

.viewpoint-save-input:focus {
    border-color: var(--primary-color, #6366f1);
    background: rgba(255, 255, 255, 0.12);
}

.viewpoint-save-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.viewpoint-save-modal-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.viewpoint-save-modal-footer .btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.viewpoint-save-modal-footer .btn-cancel {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
}

.viewpoint-save-modal-footer .btn-cancel:hover {
    background: rgba(255, 255, 255, 0.15);
}

.viewpoint-save-modal-footer .btn-confirm {
    background: var(--primary-color, #6366f1);
    color: #ffffff;
}

.viewpoint-save-modal-footer .btn-confirm:hover {
    background: var(--primary-hover, #5558e3);
}

/* 亮色主题 */
[data-theme="light"] .viewpoint-save-modal-content {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .viewpoint-save-modal-header h4 {
    color: #1f2937;
}

[data-theme="light"] .viewpoint-save-input {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.1);
    color: #1f2937;
}

[data-theme="light"] .viewpoint-save-input::placeholder {
    color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .viewpoint-save-modal-footer .btn-cancel {
    background: rgba(0, 0, 0, 0.06);
    color: #4b5563;
}

@media (max-width: 480px) {
    .viewpoint-save-modal-content {
        width: calc(100% - 32px);
    }
    
    .viewpoint-save-modal-header {
        padding: 14px 16px;
    }
    
    .viewpoint-save-modal-body {
        padding: 16px;
    }
    
    .viewpoint-save-modal-footer {
        padding: 14px 16px;
    }
}

/* ==========================================================================
   分享链接浮层（DOM 挂在 .tah-3d-viewer-container 下，与画笔/爆炸面板一致用 absolute 锚定画布）
   桌面：容器内右上；窄屏：画布底部横向（left/right/bottom，为右侧竖工具栏留空）
   ========================================================================== */
.tah-3d-share-anchor {
    position: relative;
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
}

.tah-3d-viewer-container > .tah-3d-share-popover {
    display: none;
    position: absolute;
    top: 58px;
    right: 12px;
    left: auto;
    bottom: auto;
    transform: none;
    z-index: 120;
    box-sizing: border-box;
    width: min(360px, calc(100% - 24px));
    max-width: min(360px, calc(100% - 24px));
    min-width: 0;
    padding: 12px 14px;
    background: linear-gradient(145deg, rgba(28, 28, 42, 0.96), rgba(18, 18, 32, 0.98));
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

@supports (width: min(1cqw, 1px)) {
    .tah-3d-viewer-container > .tah-3d-share-popover {
        width: min(360px, calc(100cqw - 24px));
        max-width: min(360px, calc(100cqw - 24px));
    }
}

.tah-3d-viewer-container > .tah-3d-share-popover.is-open {
    display: block;
}

.tah-3d-share-toggle-row {
    margin-bottom: 10px;
}

.tah-3d-share-toggle-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.35;
    cursor: pointer;
    user-select: none;
}

.tah-3d-share-toggle-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 2px 0 0 0;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--primary-color, #6366f1);
}

/* 与 AR 浮层一致：避免 [data-theme=light] 把字变成深灰叠在深色底上不可读 */
.tah-3d-viewer-container > .tah-3d-share-popover .tah-3d-share-hint {
    margin: 0 0 12px;
    font-size: 11px;
    line-height: 1.5;
    color: #e5e7eb !important;
    -webkit-text-fill-color: #e5e7eb;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

.tah-3d-share-popover.is-share-disabled .tah-3d-share-copy {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

.tah-3d-share-popover.is-share-disabled .tah-3d-share-input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.tah-3d-share-label {
    display: block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.02em;
}

.tah-3d-share-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.tah-3d-share-input {
    flex: 1;
    min-width: 0;
    padding: 8px 10px;
    font-size: 12px;
    color: #e5e7eb;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
}

.tah-3d-share-copy {
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    background: var(--primary-color, #6366f1);
    border: none;
    border-radius: 8px;
    transition: background 0.15s ease, opacity 0.15s ease;
}

.tah-3d-share-copy:hover {
    background: var(--primary-hover, #5558e3);
}

.tah-3d-share-arrow {
    position: absolute;
    left: auto;
    /* right 由 JS 根据 #btn-share-link 与弹层位置写入 --tah-share-arrow-right，对齐分享按钮中心 */
    right: var(--tah-share-arrow-right, 9px);
    top: -7px;
    width: 14px;
    height: 14px;
    background: linear-gradient(145deg, rgba(28, 28, 42, 0.96), rgba(18, 18, 32, 0.98));
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    transform: rotate(45deg);
    pointer-events: none;
}

[data-theme="light"] .tah-3d-share-popover {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .tah-3d-share-label {
    color: #374151;
}

[data-theme="light"] .tah-3d-share-toggle-label {
    color: #111827;
}

[data-theme="light"] .tah-3d-viewer-container > .tah-3d-share-popover .tah-3d-share-hint {
    color: #4b5563 !important;
    -webkit-text-fill-color: #4b5563;
    text-shadow: none;
}

[data-theme="light"] .tah-3d-share-popover.is-share-disabled .tah-3d-share-input::placeholder {
    color: rgba(0, 0, 0, 0.45);
}

[data-theme="light"] .tah-3d-share-input {
    color: #111827;
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .tah-3d-share-arrow {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border-left-color: rgba(0, 0, 0, 0.1);
    border-top-color: rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   分享模式：沉浸式仅展示 3D + 铺满视口、无整页滚动条（移动端 100dvh / 安全区）
   ========================================================================== */
html.tah-3d-share-mode-html {
    height: 100%;
    overflow: hidden;
    -webkit-text-size-adjust: 100%;
}

/* 取消 WP 管理栏导致的 html 顶边距，避免分享页出现双滚动条 */
html.tah-3d-share-mode-html {
    margin-top: 0 !important;
}

body.tah-3d-share-mode {
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    min-height: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden !important;
    overscroll-behavior: none;
    -webkit-overflow-scrolling: auto;
    /* 刘海屏 / Home 指示条 */
    padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
}

/* 已登录且顶部有管理栏时保留可操作区域，避免遮挡 */
body.tah-3d-share-mode.admin-bar {
    padding-top: max(env(safe-area-inset-top, 0px), var(--wp-admin--admin-bar--height, 32px));
}

body.tah-3d-share-mode #site-header,
body.tah-3d-share-mode #site-footer {
    display: none !important;
}

body.tah-3d-share-mode .breadcrumb-wrapper,
body.tah-3d-share-mode .author-edit-bar,
body.tah-3d-share-mode .payment-success-banner,
body.tah-3d-share-mode .gallery-view-tabs,
body.tah-3d-share-mode .gallery-view-panel:not(#gallery-view-3d),
body.tah-3d-share-mode .detail-action-bar,
body.tah-3d-share-mode .stool-related-section,
body.tah-3d-share-mode .detail-fullwidth-widgets,
body.tah-3d-share-mode .detail-bottom-widgets,
body.tah-3d-share-mode .page-sidebar,
body.tah-3d-share-mode #comments,
body.tah-3d-share-mode .comments-area {
    display: none !important;
}

body.tah-3d-share-mode .tah-3d-viewer-section .section-header {
    display: none !important;
}

body.tah-3d-share-mode #page.site-wrapper {
    flex: 1 1 auto;
    min-height: 0;
    width: 100% !important;
    max-width: 100% !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

body.tah-3d-share-mode #main-content.model-detail-page {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    margin: 0;
    padding: 0;
    background: transparent;
    min-height: 0 !important;
    width: 100% !important;
    max-width: none !important;
}

/* layout.css 的 .container 有 max-width + 水平 padding，分享页需全宽铺满 */
body.tah-3d-share-mode #main-content .container {
    flex: 1 1 auto;
    min-height: 0;
    max-width: none !important;
    width: 100% !important;
    margin: 0 !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/*
 * 详情页侧栏布局使用 CSS Grid：1fr + 侧栏宽。侧栏 display:none 后，第二列空轨道仍会占位，
 * 导致主内容区无法铺满（右侧大块留白）。分享模式强制单栏 + flex 占满。
 */
body.tah-3d-share-mode .page-with-sidebar,
body.tah-3d-share-mode.tah-has-sidebar .page-with-sidebar,
body.tah-3d-share-mode.tah-sidebar-left .page-with-sidebar,
body.tah-3d-share-mode.tah-sidebar-right .page-with-sidebar {
    display: flex !important;
    flex-direction: column !important;
    flex: 1 1 auto !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: auto !important;
    gap: 0 !important;
    align-items: stretch !important;
    width: 100% !important;
    max-width: 100% !important;
    min-height: 0 !important;
    padding-top: 0 !important;
    overflow: hidden !important;
}

body.tah-3d-share-mode .page-main-content {
    flex: 1 1 auto !important;
    min-height: 0 !important;
    min-width: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
}

body.tah-3d-share-mode .model-detail-grid {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0;
    margin: 0;
}

body.tah-3d-share-mode .model-gallery-section {
    flex: 1 1 auto;
    min-height: 0;
    width: 100% !important;
    max-width: none !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 0;
    box-shadow: none;
}

body.tah-3d-share-mode .gallery-view-panel#gallery-view-3d,
body.tah-3d-share-mode .gallery-view-panel#gallery-view-3d.active {
    flex: 1 1 auto !important;
    min-height: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
    width: 100% !important;
}

body.tah-3d-share-mode .tah-3d-viewer-section {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
}

body.tah-3d-share-mode .tah-3d-viewer-wrapper {
    flex: 1 1 auto;
    min-height: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* 覆盖 PHP 内联固定高度，使画布随父级 flex 区域伸缩 */
body.tah-3d-share-mode .tah-3d-viewer-container {
    flex: 1 1 auto;
    min-height: 0;
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
}

body.tah-3d-share-mode #btn-share-link {
    display: none !important;
}

/* 分享页不显示 AI 智能客服浮标 */
body.tah-3d-share-mode #tah-chatbot,
body.tah-3d-share-mode .tah-chatbot {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

/* 窄屏：分享面板贴在画布底部（与 .paint-palette 同思路：absolute + left/right/bottom，不占工具栏窄条） */
@media (max-width: 768px) {
    .tah-3d-viewer-container > .tah-3d-share-popover {
        position: absolute;
        top: auto !important;
        left: 10px;
        right: 60px;
        bottom: max(12px, env(safe-area-inset-bottom, 0px));
        width: auto;
        max-width: none;
        min-width: 0;
        margin: 0;
        border-radius: 12px;
        padding: 12px 14px max(12px, env(safe-area-inset-bottom, 0px));
        transform: none;
        z-index: 100;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }

    .tah-3d-share-arrow {
        display: none;
    }

    body.tah-3d-share-mode .viewer-toolbar {
        padding-bottom: max(8px, env(safe-area-inset-bottom, 0px));
    }
}

/* 横屏 / 动态工具栏：避免 100vh 与可视区域不一致时溢出（由 JS 同步 resize） */
@supports (height: 100dvh) {
    html.tah-3d-share-mode-html {
        height: 100dvh;
        max-height: 100dvh;
    }

    body.tah-3d-share-mode {
        min-height: 100dvh;
        max-height: 100dvh;
        height: 100dvh;
    }
}

/* —— AR Quick Look + 二维码浮层（锚定在 AR 按钮正下方，与分享浮层一致，随 data-theme 切换）—— */
.tah-ar-quicklook-anchor {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* .cdz 解密后须用户直接点击 rel="ar"（避免程序化 click 导致 Quick Look 一闪即退） */
.tah-ar-cdz-overlay {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
    box-sizing: border-box;
    background: rgba(0, 0, 0, 0.76);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.tah-ar-cdz-overlay-text {
    margin: 0;
    max-width: min(300px, 92vw);
    text-align: center;
    font-size: 15px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.94);
}

.tah-ar-cdz-overlay-ar {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
    padding: 14px 26px;
    border-radius: 14px;
    background: #0a84ff;
    color: #fff;
    font-size: 17px;
    font-weight: 600;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

.tah-ar-cdz-overlay-ar .tah-ar-quicklook-poster {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: 0;
    padding: 0;
    opacity: 0;
    pointer-events: none;
}

.tah-ar-cdz-overlay-ar-label {
    position: relative;
    z-index: 1;
}

.tah-ar-cdz-overlay-close {
    position: absolute;
    top: max(10px, env(safe-area-inset-top));
    right: max(10px, env(safe-area-inset-right));
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.tah-ar-qr-anchor {
    position: relative;
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    z-index: 25;
}

.tah-ar-qr-anchor .tah-ar-qr-popover {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    left: auto;
    bottom: auto;
    z-index: 130;
    box-sizing: border-box;
    /* 宽度随内容收缩，与二维码白底同宽，避免两侧空档 */
    width: max-content;
    max-width: min(200px, calc(100vw - 40px));
    min-width: 0;
    pointer-events: auto;
    filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.28));
}

@supports (width: min(1cqw, 1px)) {
    .tah-ar-qr-anchor .tah-ar-qr-popover {
        max-width: min(200px, calc(100cqw - 32px));
    }
}

.tah-ar-qr-popover-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: max-content;
    max-width: inherit;
    min-width: 0;
    padding: 6px 8px 8px;
    background: linear-gradient(145deg, rgba(28, 28, 42, 0.96), rgba(18, 18, 32, 0.98));
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.tah-ar-qr-popover-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    margin-bottom: 4px;
}

.tah-ar-qr-popover-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.95);
}

.tah-ar-qr-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    margin: 0;
    padding: 0;
    color: rgba(255, 255, 255, 0.65);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.tah-ar-qr-close:hover {
    color: rgba(255, 255, 255, 0.95);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.18);
}

.tah-ar-qr-close svg {
    display: block;
    width: 14px;
    height: 14px;
}

.tah-ar-qr-code {
    display: flex;
    justify-content: center;
    align-items: center;
    align-self: center;
    width: fit-content;
    max-width: 100%;
    min-height: 0;
    margin: 0 auto;
    padding: 2px;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 4px;
    box-sizing: border-box;
}

.tah-ar-qr-svg {
    display: block;
    width: auto;
    height: auto;
    max-width: 128px;
    vertical-align: top;
}

.tah-ar-qr-img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* 深色底：与 html[data-theme=light] 解耦，避免站点浅色变量把字变成深灰导致「看不见」 */
.tah-ar-qr-popover-inner .tah-ar-qr-tip {
    margin: 6px auto 0;
    padding: 0;
    max-width: 128px;
    font-size: 11px;
    line-height: 1.5;
    text-align: center;
    color: #f3f4f6 !important;
    -webkit-text-fill-color: #f3f4f6;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.55);
    word-break: break-word;
}

.tah-ar-qr-loading {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
}

.tah-ar-qr-err {
    font-size: 12px;
    line-height: 1.45;
    color: #f87171;
    text-align: center;
}

/* 指向 AR 按钮的小三角（与分享浮层箭头同一逻辑：在浮层顶部、靠右对齐窄锚点） */
.tah-ar-qr-arrow {
    position: absolute;
    z-index: 0;
    top: -7px;
    right: 9px;
    left: auto;
    bottom: auto;
    width: 12px;
    height: 12px;
    background: linear-gradient(145deg, rgba(28, 28, 42, 0.96), rgba(18, 18, 32, 0.98));
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    transform: rotate(45deg);
    pointer-events: none;
}

/* 浅色主题（与 html[data-theme="light"] 一致） */
[data-theme="light"] .tah-ar-qr-popover-inner {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
}

[data-theme="light"] .tah-ar-qr-popover-title {
    color: #111827;
}

[data-theme="light"] .tah-ar-qr-close {
    color: #6b7280;
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .tah-ar-qr-close:hover {
    color: #111827;
    background: rgba(0, 0, 0, 0.07);
    border-color: rgba(0, 0, 0, 0.14);
}

[data-theme="light"] .tah-ar-qr-code {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .tah-ar-qr-popover-inner .tah-ar-qr-tip {
    color: #1f2937 !important;
    -webkit-text-fill-color: #1f2937;
    text-shadow: none;
}

[data-theme="light"] .tah-ar-qr-loading {
    color: #9ca3af;
}

[data-theme="light"] .tah-ar-qr-arrow {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    border-left-color: rgba(0, 0, 0, 0.1);
    border-top-color: rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .tah-ar-qr-anchor .tah-ar-qr-popover {
        max-width: min(200px, calc(100vw - 28px));
    }
}