:root{--primary-dark: #1a2332;--primary-gold: #d4af37;--primary-black: #0f0f0f;--neutral-white: #ffffff;--neutral-light: #f5f5f5;--neutral-gray: #757575;--neutral-dark-gray: #424242;--accent-success: #4caf50;--accent-error: #f44336;--accent-warning: #ff9800;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--font-serif: "Georgia", "Times New Roman", serif;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", sans-serif;--font-mono: "Courier New", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--transition-fast: .15s ease-in-out;--transition-normal: .3s ease-in-out;--transition-slow: .5s ease-in-out;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .2);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .3)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:1.6;color:var(--neutral-dark-gray);background-color:var(--neutral-light)}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);font-weight:700;line-height:1.2;margin-bottom:var(--spacing-md)}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}h5{font-size:var(--text-lg)}h6{font-size:var(--text-base)}p{margin-bottom:var(--spacing-md)}a{color:var(--primary-gold);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:#e0c451}a:focus{outline:2px solid var(--primary-gold);outline-offset:2px}.app-container{min-height:100vh;display:flex;flex-direction:column;background-color:var(--neutral-light)}.main-content{flex:1;max-width:1400px;width:100%;margin:0 auto;padding:var(--spacing-xl)}.section-title{font-size:var(--text-3xl);font-family:var(--font-serif);color:var(--primary-dark);margin-bottom:var(--spacing-lg);border-bottom:3px solid var(--primary-gold);padding-bottom:var(--spacing-md)}.header{background:linear-gradient(135deg,var(--primary-dark) 0%,#2a3a52 100%);color:var(--neutral-white);padding:var(--spacing-lg) var(--spacing-xl);box-shadow:var(--shadow-lg);position:sticky;top:0;z-index:100}.header-container{max-width:1400px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-xl)}.logo{display:flex;align-items:center;gap:var(--spacing-md)}.logo-icon{font-size:var(--text-3xl)}.logo h1{font-size:var(--text-2xl);margin:0;color:var(--primary-gold);text-shadow:2px 2px 4px rgba(0,0,0,.5)}.navigation{display:flex;gap:var(--spacing-lg)}.nav-btn{background:none;border:2px solid transparent;color:var(--neutral-white);font-size:var(--text-lg);font-family:var(--font-serif);padding:var(--spacing-sm) var(--spacing-md);cursor:pointer;transition:all var(--transition-normal);position:relative;display:flex;align-items:center;gap:var(--spacing-sm)}.nav-btn:hover,.nav-btn.active{color:var(--primary-gold);border-bottom:2px solid var(--primary-gold)}.badge{background-color:var(--accent-error);color:var(--neutral-white);border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:700}.search-form{background:var(--neutral-white);padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin-bottom:var(--spacing-2xl)}.search-form h2{color:var(--primary-dark);margin-bottom:var(--spacing-lg)}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.form-group label{font-weight:600;color:var(--primary-dark);font-family:var(--font-serif)}.form-input,.form-select{padding:var(--spacing-md);border:2px solid #ddd;border-radius:var(--radius-md);font-family:var(--font-sans);font-size:var(--text-base);transition:all var(--transition-fast);background-color:var(--neutral-white);color:var(--neutral-dark-gray)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--primary-gold);box-shadow:0 0 0 3px #d4af371a}.form-input:invalid:not(:placeholder-shown),.form-input.error{border-color:var(--accent-error)}.form-input:valid:not(:placeholder-shown){border-color:var(--accent-success)}.form-checkbox{width:20px;height:20px;cursor:pointer;accent-color:var(--primary-gold)}.checkbox-group{flex-direction:row;align-items:center}.checkbox-label{display:flex;align-items:center;gap:var(--spacing-md);font-weight:500;cursor:pointer}.error-message{color:var(--accent-error);font-size:var(--text-sm);font-weight:600}.form-actions{display:flex;gap:var(--spacing-md);justify-content:flex-start;flex-wrap:wrap}.btn{padding:var(--spacing-md) var(--spacing-lg);border:none;border-radius:var(--radius-md);font-family:var(--font-serif);font-size:var(--text-base);font-weight:600;cursor:pointer;transition:all var(--transition-normal);display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm)}.btn-primary{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary-gold) 100%);color:var(--neutral-white);box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background-color:var(--neutral-gray);color:var(--neutral-white)}.btn-secondary:hover{background-color:var(--neutral-dark-gray)}.btn-small{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--text-sm)}.btn-favorite{background-color:transparent;border:2px solid var(--primary-gold);color:var(--primary-gold)}.btn-favorite:hover,.btn-favorite.active{background-color:var(--primary-gold);color:var(--neutral-white)}.artwork-section{margin-bottom:var(--spacing-2xl)}.artwork-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg);list-style:none}.artwork-card{background:var(--neutral-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:all var(--transition-normal);display:flex;flex-direction:column;height:100%}.artwork-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl)}.card-content{display:flex;flex-direction:column;flex-grow:1;padding:var(--spacing-md)}.card-content .btn{margin-top:auto;width:100%;text-align:center}.card-image-wrapper{position:relative;width:100%;padding-top:100%;overflow:hidden;background-color:var(--neutral-light)}.card-image{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.artwork-card:hover .card-image{transform:scale(1.05)}.card-image-placeholder{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e0e0e0,#f5f5f5);color:var(--neutral-gray);font-size:var(--text-lg);font-weight:600}.favorite-btn{position:absolute;top:var(--spacing-md);right:var(--spacing-md);width:40px;height:40px;border-radius:50%;background-color:#ffffffe6;border:none;font-size:var(--text-xl);cursor:pointer;transition:all var(--transition-normal);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md)}.favorite-btn:hover{background-color:var(--neutral-white);transform:scale(1.1)}.favorite-btn.active{color:var(--accent-error)}.card-content{padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-md);flex:1}.card-title{font-size:var(--text-lg);color:var(--primary-dark);font-family:var(--font-serif);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}.card-artist{font-size:var(--text-sm);color:var(--neutral-gray);margin:0}.card-date{font-size:var(--text-sm);color:var(--primary-gold);font-weight:600;margin:0}.card-department{font-size:var(--text-xs);color:var(--neutral-gray);text-transform:uppercase;letter-spacing:1px;margin:0}.modal-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#000000b3;z-index:200;animation:fadeIn var(--transition-normal)}.detail-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);max-width:900px;width:90%;max-height:90vh;background:var(--neutral-white);border-radius:var(--radius-lg);z-index:300;box-shadow:var(--shadow-xl);overflow-y:auto;border:none;animation:slideIn var(--transition-normal)}.modal-content{position:relative}.modal-close{position:absolute;top:var(--spacing-md);right:var(--spacing-md);width:40px;height:40px;background:var(--primary-dark);color:var(--neutral-white);border:none;border-radius:50%;font-size:var(--text-2xl);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);z-index:10}.modal-close:hover{background:var(--primary-gold)}.modal-body{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-xl);padding:var(--spacing-xl)}.modal-image-section{display:flex;align-items:center;justify-content:center}.modal-image{width:100%;max-height:500px;object-fit:contain;border-radius:var(--radius-md);box-shadow:var(--shadow-md)}.modal-info-section{display:flex;flex-direction:column;gap:var(--spacing-lg)}.modal-title{font-size:var(--text-2xl);font-family:var(--font-serif);color:var(--primary-dark);margin:0}.info-group{display:flex;flex-direction:column;gap:var(--spacing-sm);border-bottom:1px solid #eee;padding-bottom:var(--spacing-md)}.info-group:last-of-type{border-bottom:none}.info-label{font-size:var(--text-sm);font-weight:700;color:var(--primary-gold);text-transform:uppercase;letter-spacing:1px;margin:0;font-family:var(--font-serif)}.info-value{font-size:var(--text-base);color:var(--neutral-dark-gray);margin:0}.modal-actions{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-lg);flex-wrap:wrap}.modal-loading{padding:var(--spacing-2xl);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-lg)}.data-table-section{background:var(--neutral-white);padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin-top:var(--spacing-2xl)}.table-wrapper{overflow-x:auto}.data-table{width:100%;border-collapse:collapse;font-size:var(--text-sm)}.data-table thead{background-color:var(--primary-dark);color:var(--neutral-white)}.data-table th{padding:var(--spacing-md);text-align:left;font-weight:600;font-family:var(--font-serif);text-transform:uppercase;letter-spacing:1px;font-size:var(--text-sm);border-bottom:2px solid var(--primary-gold)}.data-table td{padding:var(--spacing-md);border-bottom:1px solid #eee}.data-table tbody tr:hover{background-color:#f9f9f9}.cell-keyword{color:var(--primary-gold);font-weight:600}.cell-timestamp{color:var(--neutral-gray);font-size:var(--text-xs)}.favorites-section{min-height:50vh}.spinner{width:50px;height:50px;border:4px solid rgba(212,175,55,.3);border-top-color:var(--primary-gold);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-lg);padding:var(--spacing-2xl);min-height:300px;color:var(--neutral-gray)}.error-banner{background-color:#ffebee;border-left:4px solid var(--accent-error);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg);border-radius:var(--radius-md);display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.error-banner p{color:var(--accent-error);margin:0;font-weight:600}.close-btn{background:none;border:none;font-size:var(--text-xl);color:var(--accent-error);cursor:pointer;padding:0}.empty-state{background:var(--neutral-white);padding:var(--spacing-2xl);text-align:center;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);color:var(--neutral-gray);min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md)}.empty-state p{margin:0;font-size:var(--text-lg)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translate(-50%,-48%)}to{opacity:1;transform:translate(-50%,-50%)}}@media (max-width: 768px){.main-content{padding:var(--spacing-lg)}.form-grid,.modal-body{grid-template-columns:1fr}.artwork-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-md)}.header-container{flex-direction:column;gap:var(--spacing-md)}.navigation{width:100%;justify-content:space-around}h1,h2{font-size:var(--text-2xl)}h3{font-size:var(--text-xl)}}@media (max-width: 480px){:root{--text-base: 14px}.main-content{padding:var(--spacing-md)}.section-title{font-size:var(--text-2xl)}.form-grid{grid-template-columns:1fr}.form-actions{flex-direction:column}.btn{width:100%}.artwork-card{display:flex;flex-direction:column;justify-content:space-between;background:#fff;border-radius:12px;box-shadow:0 4px 10px #00000014;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}.artwork-card:hover{transform:translateY(-4px);box-shadow:0 8px 16px #0000001f}@media (max-width: 600px){.artwork-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.8rem}}.card-content{padding:var(--spacing-md)}.card-title{font-size:var(--text-base)}.detail-modal{width:95%;max-height:95vh;border-radius:0}.modal-body{padding:var(--spacing-lg) var(--spacing-md)}.modal-image{max-height:300px}.data-table{font-size:var(--text-xs)}.data-table th,.data-table td{padding:var(--spacing-sm)}.header{padding:var(--spacing-md)}.logo h1{font-size:var(--text-lg)}.nav-btn{font-size:var(--text-base)}}@media print{body{background-color:var(--neutral-white)}.header,.modal-backdrop,.form-actions{display:none}.artwork-card{page-break-inside:avoid}}