.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a1a2e,#16213e);padding:1rem}.login-card{background:#fff;border-radius:.75rem;padding:2.5rem;width:100%;max-width:24rem;box-shadow:0 .5rem 2rem #0000004d}.login-title{font-size:2rem;font-weight:300;color:#1a1a2e;margin:0 0 .25rem;text-align:center;letter-spacing:.1em}.login-subtitle{color:#666;text-align:center;margin:0 0 2rem;font-size:.875rem}.login-form{display:flex;flex-direction:column;gap:1.25rem}.login-field{display:flex;flex-direction:column;gap:.375rem}.login-field label{font-size:.875rem;font-weight:500;color:#333}.login-field input{padding:.75rem;border:1px solid #ddd;border-radius:.375rem;font-size:1rem;transition:border-color .2s,box-shadow .2s}.login-field input:focus{outline:none;border-color:#1a1a2e;box-shadow:0 0 0 3px 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.react-transform-wrapper:active{cursor:move}.open-in-tab-btn,.display-open-btn,.sidebar-open-btn{position:absolute;background:#0009;color:var(--brand-gold-subtle);text-decoration:none;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-normal),background var(--transition-normal),color var(--transition-normal);border-radius:50%}.open-in-tab-btn:hover,.display-open-btn:hover,.sidebar-open-btn:hover{background:#f5c518cc;color:var(--bg-darkest)}.image-container:hover .open-in-tab-btn,.painting-display-image:hover .display-open-btn,.sidebar-thumbnail-container:hover .sidebar-open-btn{opacity:1}.search-bar{display:flex;align-items:center}.search-form{display:flex}.search-field-select{padding:.625rem .75rem;font-size:var(--font-md);border:none;border-radius:var(--radius-md) 0 0 var(--radius-md);background:var(--bg-lighter);color:var(--text-primary);cursor:pointer;outline:none}.search-field-select:focus{background:var(--bg-lightest)}.search-field-select option{background:var(--bg-dark);color:var(--text-primary)}.search-input{padding:.625rem var(--space-md);font-size:var(--font-md);border:none;border-radius:0;background:var(--bg-light);color:var(--text-primary);width:18.75rem;outline:none}.search-input::placeholder{color:var(--text-muted)}.search-input:focus{background:var(--bg-lighter)}.search-btn{padding:.625rem .75rem;font-size:var(--font-md);border:none;border-radius:0;background:var(--bg-light);color:var(--brand-gold);cursor:pointer;font-weight:500;transition:background var(--transition-normal);display:flex;align-items:center;justify-content:center}.search-btn:hover{background:var(--bg-light)}.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(12.5rem,1fr));gap:var(--space-md);padding:var(--space-lg) 0}.image-card{background:var(--bg-dark);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.image-card:hover{transform:translateY(-.25rem);box-shadow:0 .5rem 1.5rem #0006}.image-container{position:relative;aspect-ratio:4 / 5;background:var(--bg-medium)}.image-card img{width:100%;height:100%;object-fit:cover;display:block}.open-in-tab-btn{bottom:var(--space-sm);right:var(--space-sm);width:1.75rem;height:1.75rem;font-size:var(--font-md)}.hq-btn,.display-hq-btn,.sidebar-hq-btn{position:absolute;background:#a0a0a099;color:var(--text-primary);text-decoration:none;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-normal),background var(--transition-normal);border-radius:50%;font-weight:600;font-size:.625rem}.hq-btn:hover,.display-hq-btn:hover,.sidebar-hq-btn:hover{background:#dc3c3ce6;color:var(--text-primary)}.image-container:hover .hq-btn,.painting-display-image:hover .display-hq-btn,.sidebar-thumbnail-container:hover .sidebar-hq-btn{opacity:1}.hq-btn{bottom:var(--space-sm);left:var(--space-sm);width:1.75rem;height:1.75rem}.display-hq-btn{bottom:var(--space-sm);left:var(--space-sm);width:2rem;height:2rem;font-size:.75rem}.sidebar-hq-btn{bottom:var(--space-xs);left:var(--space-xs);width:1rem;height:1rem;font-size:.5rem}.image-card-info{padding:.75rem}.image-card-info h3{font-size:var(--font-md);margin-bottom:var(--space-xs)}.image-card-info p{font-size:var(--font-sm);color:var(--text-muted);margin:.125rem 0}.field-link{cursor:pointer;transition:color var(--transition-normal);text-decoration:none;color:inherit}.field-link:hover{color:var(--brand-gold);text-decoration:underline}.field-link:visited{color:inherit}.field-link:hover:visited{color:var(--brand-gold)}.category-badge{display:inline-block;padding:.125rem var(--space-sm);border-radius:var(--radius-sm);font-size:var(--font-xs);text-transform:uppercase;margin-top:var(--space-sm)}.category-badge.similar{background:var(--color-success-bg);color:var(--color-success-text)}.category-badge.related{background:var(--color-warning-bg);color:var(--color-warning-text)}.category-badge.discovery{background:var(--color-danger-bg);color:var(--color-error)}.loading{text-align:center;padding:var(--space-3xl);color:var(--text-dimmed);font-size:var(--font-xl)}.error{text-align:center;padding:var(--space-3xl);color:var(--color-error);font-size:var(--font-xl)}.empty-message{text-align:center;padding:var(--space-3xl);color:var(--text-muted);font-size:var(--font-lg)}.status-text{color:var(--brand-gold-subtle);font-size:var(--font-md);margin:0}.favorite-btn{background:none;border:none;cursor:pointer;font-size:var(--font-md);color:var(--text-dimmed);padding:0 var(--space-xs) 0 0;margin:0;line-height:1;transition:color var(--transition-normal),transform var(--transition-fast)}.favorite-btn:hover{color:var(--brand-gold);transform:scale(1.2)}.favorite-btn.active{color:var(--brand-gold)}.favorite-btn:disabled{opacity:.5;cursor:wait}.header-controls{display:flex;gap:.75rem;align-items:center}.main-content{display:flex;gap:var(--space-lg)}.paintings-area{flex:1}.app.with-sidebar .main-content{flex-direction:row}.painting-display{display:flex;gap:var(--space-xl);padding:var(--space-lg);background:var(--bg-darkest);border-bottom:1px solid var(--bg-light);margin-bottom:var(--space-md)}.painting-display.portrait{flex-direction:row}.painting-display.landscape{flex-direction:column;align-items:center}.painting-display-image{flex-shrink:0;max-width:25rem;max-height:25rem;position:relative}.painting-display.landscape .painting-display-image{max-width:37.5rem;max-height:21.875rem}.painting-display-image a{cursor:grab;display:block}.painting-display-image a:active{cursor:grabbing}.painting-display-image .react-transform-wrapper{height:100%}.painting-display-image .react-transform-component{width:100%;height:100%}.painting-display-image img{max-width:100%;max-height:25rem;object-fit:contain;border-radius:var(--radius-sm);transition:opacity .2s ease-in-out}.painting-display.landscape .painting-display-image img{max-height:21.875rem}.display-open-btn{bottom:var(--space-sm);right:var(--space-sm);width:2rem;height:2rem;font-size:var(--font-lg);cursor:pointer}.painting-display-hint{position:absolute;bottom:-1.25rem;left:0;right:0;text-align:center;font-size:.6875rem;color:var(--brand-gold);opacity:0;transition:opacity var(--transition-normal);pointer-events:none}.painting-display-image:hover .painting-display-hint{opacity:1}.painting-display-info{display:flex;flex-direction:column;justify-content:center}.painting-display.landscape .painting-display-info{text-align:center;width:100%}.painting-display-info .painting-info-title{font-size:var(--font-2xl);margin-bottom:var(--space-sm);color:var(--text-primary)}.painting-display-info .painting-info-artist{font-size:1.1rem;color:var(--brand-gold);margin-bottom:var(--space-xs)}.painting-display-info .painting-info-date{color:var(--text-muted)}.painting-display-info .painting-info-details{font-size:.9rem;color:var(--text-dimmed)}.painting-display-info .back-to-grid-btn{margin-top:var(--space-md)}.favorites-dropdown{position:relative}.favorites-dropdown-menu{position:absolute;top:100%;left:50%;transform:translate(-50%);background:var(--bg-dark);border-radius:var(--radius-lg);min-width:15.625rem;max-height:25rem;overflow-y:auto;box-shadow:0 .5rem 1.5rem #0006;z-index:100;margin-top:var(--space-sm);padding:.75rem}.favorites-sidebar{width:15.625rem;background:var(--bg-dark);border-radius:var(--radius-lg);padding:var(--space-md);height:fit-content;max-height:calc(100vh - 12.5rem);overflow-y:auto;flex-shrink:0}.favorites-sidebar h3{margin-bottom:var(--space-md);font-size:var(--font-xl)}.favorites-section{margin-bottom:var(--space-md)}.favorites-section h4{font-size:var(--font-sm);color:var(--text-muted);text-transform:uppercase;margin-bottom:var(--space-sm)}.favorites-section ul{list-style:none}.favorites-item{padding:.375rem 0;font-size:.8125rem;color:var(--text-secondary);border-bottom:1px solid var(--bg-light)}.favorites-item:last-child{border-bottom:none}.favorites-item.clickable{cursor:pointer}.favorites-item.clickable:hover{color:var(--brand-gold)}.favorites-loading,.favorites-empty{color:var(--text-dimmed);font-size:.8125rem;text-align:center;padding:var(--space-lg) 0}.sidebar{background:var(--bg-darker);display:flex;flex-direction:column;flex-shrink:0;transition:width var(--transition-normal) ease;overflow:hidden;position:sticky;top:var(--space-md);height:calc(100vh - var(--space-2xl));align-self:flex-start}.sidebar-right{border-left:1px solid var(--bg-light)}.sidebar-left{border-right:1px solid var(--bg-light)}.sidebar.collapsed{width:1.5rem}.sidebar.expanded{width:4rem}.sidebar-tab{background:var(--bg-medium);border:none;color:var(--text-muted);cursor:pointer;padding:var(--space-sm) var(--space-xs);font-size:.6875rem;text-transform:uppercase;letter-spacing:1px;transition:background var(--transition-normal),color var(--transition-normal);width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar.collapsed .sidebar-tab{writing-mode:vertical-rl;text-orientation:mixed;padding:.75rem var(--space-xs);max-height:5rem;overflow:hidden;text-overflow:ellipsis}.sidebar-tab:hover{background:var(--bg-lighter);color:var(--text-primary)}.sidebar-label{display:block}.sidebar-content{flex:1;overflow-y:auto;display:flex;flex-direction:column;align-items:center;padding:var(--space-sm) 0}.sidebar-empty{color:var(--text-dimmed);font-size:var(--font-xs);text-align:center;padding:var(--space-md) var(--space-xs);writing-mode:vertical-rl}.sidebar-thumbnail{background:none;border:2px solid transparent;padding:0;margin:0;cursor:pointer;border-radius:var(--radius-sm);overflow:hidden;transition:border-color var(--transition-normal),transform var(--transition-normal)}.sidebar-thumbnail:hover{border-color:var(--brand-gold);transform:scale(1.05)}.sidebar-thumbnail img{display:block;object-fit:cover;border-radius:.125rem;aspect-ratio:1;background:var(--bg-medium)}.sidebar-thumbnail-container{position:relative;margin:var(--space-xs)}.sidebar-thumbnail-container.active .sidebar-thumbnail{border-color:var(--brand-gold);box-shadow:0 0 0 .125rem var(--brand-gold),0 0 .5rem #d4af3780}.sidebar-open-btn{bottom:.125rem;right:.125rem;width:1rem;height:1rem;font-size:var(--font-xs);border-radius:.1875rem}.image-viewer{min-height:100vh;background:var(--bg-darkest);display:flex;flex-direction:column;align-items:center;padding:var(--space-lg);padding-bottom:4rem;overflow-y:auto}.image-viewer-controls{display:flex;justify-content:space-between;align-items:center;padding:.75rem var(--space-lg);background:var(--bg-darker);border-bottom:1px solid var(--bg-light)}.image-viewer-hint{color:var(--text-muted);font-size:.8125rem}.image-viewer-info-below{text-align:center;padding:1rem var(--space-lg) 0;margin-top:.5rem}.image-viewer-zoom-hint-gold{font-size:.6875rem;color:var(--brand-gold);display:block;margin-bottom:.75rem}.image-viewer-painting-info{margin-top:.5rem}.image-viewer-painting-info .painting-info-title{font-size:var(--font-xl);font-weight:500;color:var(--text-primary);margin:0}.image-viewer-painting-info .painting-info-artist{font-size:var(--font-md);color:var(--brand-gold);margin:.25rem 0 0}.image-viewer-painting-info .painting-info-date{color:var(--text-muted)}.image-viewer-painting-info .painting-info-details{font-size:var(--font-sm);color:var(--text-muted);margin:.25rem 0 0}.image-viewer-raw-link{color:var(--brand-gold);text-decoration:none;font-size:.8125rem}.image-viewer-raw-link:hover{text-decoration:underline}.image-viewer-container{display:flex;align-items:center;justify-content:center;overflow:hidden}.image-viewer-container .react-transform-wrapper{max-height:calc(100vh - 12rem)}.image-viewer-container .react-transform-component{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.image-viewer-container img{max-width:100%;max-height:calc(100vh - 7.5rem);object-fit:contain}.image-viewer-loading{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:10;text-align:center;color:var(--text-primary)}.image-viewer-loading .loading-spinner{width:3rem;height:3rem;border:3px solid var(--border-subtle);border-top-color:var(--brand-gold);border-radius:50%;animation:hq-spin 1s linear infinite;margin:0 auto 1rem}@keyframes hq-spin{to{transform:rotate(360deg)}}.image-viewer-loading p{margin:.5rem 0}.image-viewer-loading .loading-hint{font-size:.8125rem;color:var(--text-muted)}.image-viewer-container.loading{opacity:.3}.image-viewer-links{display:flex;align-items:center;gap:.75rem}.image-viewer-hq-badge{background:var(--brand-gold);color:var(--bg-darkest);padding:.125rem .5rem;border-radius:.25rem;font-size:.6875rem;font-weight:600;letter-spacing:.025em}.image-viewer-error{position:absolute;top:4rem;left:50%;transform:translate(-50%);background:#dc3545e6;color:#fff;padding:.5rem 1rem;border-radius:.25rem;z-index:5;font-size:.875rem}.image-grid-container{display:flex;flex-direction:column}.grid-progress{text-align:center;color:var(--text-muted);font-size:var(--font-sm);padding:var(--space-sm) 0;border-bottom:1px solid var(--bg-light);margin-bottom:var(--space-sm)}.scroll-sentinel{height:1px;width:100%;visibility:hidden}.loading-more{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-xl) 0;color:var(--text-muted);font-size:var(--font-md)}.loading-spinner{width:1.25rem;height:1.25rem;border:2px solid var(--bg-lighter);border-top-color:var(--brand-gold);border-radius:50%;animation:spin .8s linear infinite}.loading-spinner--large{width:3rem;height:3rem;border-width:3px}@keyframes spin{to{transform:rotate(360deg)}}.loading-image-container{position:relative;width:100%;height:100%}.loading-image-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:var(--bg-light)}.loading-image{width:100%;height:100%;object-fit:contain;transition:opacity .2s ease-in-out}.loading-image--loading{opacity:0}.loading-image--loaded{opacity:1}.end-of-results{text-align:center;color:var(--text-dimmed);font-size:var(--font-sm);padding:var(--space-lg) 0;border-top:1px solid var(--bg-light);margin-top:var(--space-md)}.viewer-area{flex:1;display:flex;flex-direction:column;min-height:0;position:relative}.viewer-area .image-viewer{min-height:calc(100vh - 2rem)}.viewer-mode .main-content{height:100vh}.back-to-grid-link{position:absolute;bottom:1rem;right:1rem;background:var(--bg-darker);color:var(--text-secondary);border:1px solid var(--brand-gold-subtle);padding:.5rem 1rem;border-radius:var(--radius-sm);font-size:var(--font-sm);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast);z-index:10}.back-to-grid-link:hover{background:var(--bg-lighter);color:var(--text-primary);border-color:var(--brand-gold)}.floating-reset-btn{position:fixed;bottom:var(--space-xl);right:6rem;background:var(--bg-dark);border:1px solid var(--brand-gold-subtle);color:var(--text-primary);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);cursor:pointer;font-size:var(--font-md);font-weight:500;box-shadow:0 .25rem 1rem #0006;transition:background var(--transition-normal),border-color var(--transition-normal),transform var(--transition-fast);z-index:100}.floating-reset-btn:hover{background:var(--bg-lighter);border-color:var(--brand-gold);transform:translateY(-.125rem)}.auth-loading{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-darkest)}.auth-loading-spinner{width:2.5rem;height:2.5rem;border:3px solid var(--bg-lighter);border-top-color:var(--brand-gold);border-radius:50%;animation:spin .8s linear infinite}.logout-btn{position:absolute;right:0;bottom:.25rem;background:transparent;border:none;color:var(--text-muted);padding:0;cursor:pointer;display:flex;align-items:center;transition:color var(--transition-normal)}.logout-btn:hover{color:var(--text-primary)}