:root{--bg-color: #fdfbf7;--text-color: #2c2520;--accent-color: #8b4513;--accent-dark: #6d360f;--border-color: #e0dcd5;--font-serif: Georgia, "Times New Roman", Times, serif;--font-sans: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif}html,body,#root{min-height:100%}*{box-sizing:border-box}body{margin:0;font-family:var(--font-serif);background:linear-gradient(180deg,#fcfaf4,#f4efe5);color:var(--text-color)}a{color:var(--accent-color);text-decoration:none}a:hover{text-decoration:underline}.app-container{display:grid;grid-template-columns:280px 1fr;max-width:1280px;margin:0 auto;min-height:100vh}.sidebar{border-right:1px solid var(--border-color);padding:24px 16px;position:sticky;top:0;height:100vh;overflow:auto;background:#ffffffa6;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.sidebar-title{margin-top:0;margin-bottom:12px;font-size:1.2rem}.category-list{list-style:none;padding:0;margin:8px 0 0}.category-item{margin:0 0 10px}.category-button{display:block;width:100%;text-align:left;border:none;background:transparent;color:inherit;cursor:pointer;font-family:inherit;padding:6px 8px;border-radius:6px}.category-button.active,.category-button:hover{background:#f0e7da;color:#1f160f}.subcategory-select{width:100%;margin-top:8px}.main-content,.detail-page{padding:28px}.header{display:flex;flex-direction:column;gap:0;border-bottom:1px solid var(--border-color);margin-bottom:20px;padding-bottom:0}.header-main{padding:14px 0 12px}.brand-link{display:inline-block;font-size:1.8rem;color:#20150e}.top-nav-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:44px;background:#f2eee8;border-top:2px solid #1a1a1a;border-bottom:1px solid #dad2c6;padding:0 14px}.top-nav-side{flex:1 1 0;min-width:0}.top-nav-right-slot{display:flex;align-items:center;gap:10px;justify-content:flex-end;color:#75695b;font-family:var(--font-sans);font-size:.9rem}.login-link{border:1px solid #d2c7b8;border-radius:4px;color:#75695b;font-family:var(--font-sans);font-size:.78rem;line-height:1;padding:6px 9px;text-transform:uppercase}.login-link:hover{background:#ebe3d8;color:#5f5346;text-decoration:none}.top-nav-links{display:flex;align-items:center;justify-content:center;gap:10px;flex:0 1 auto}.top-nav-link{padding:8px 14px;color:#7a6e60;font-family:var(--font-sans);font-size:1rem;letter-spacing:.03em;line-height:1;text-align:center;text-transform:uppercase}.top-nav-link:hover{text-decoration:none;color:#5f5346}.top-nav-link.active{color:#a25e2f}.subtitle{margin:8px 0 0;color:#64584f;font-family:var(--font-sans)}.counter{font-family:var(--font-sans);color:#6b5a4d}.search-panel{border:1px solid var(--border-color);background:#fff;padding:12px;display:grid;gap:12px;margin-bottom:18px;grid-template-columns:2fr 1fr}.form-group{display:flex;flex-direction:column;gap:4px}.form-wide{grid-column:span 1}.form-group label,label{font-family:var(--font-sans);font-size:.85rem;color:#594a3f}.form-input{width:100%;border:1px solid #cfc4b7;padding:8px;border-radius:6px;font-family:inherit;background:#fff;color:#000}.book-list{display:grid;gap:14px}.book-card{display:grid;grid-template-columns:120px 1fr;gap:14px;background:#fff;border:1px solid var(--border-color);border-radius:10px;padding:12px}.book-image{width:120px;height:176px;object-fit:cover;border-radius:6px}.book-title{margin:0 0 6px}.book-title a{color:#20150e}.book-author,.book-meta{color:#5f5144;font-family:var(--font-sans)}.book-desc{margin:8px 0 10px}.book-footer{display:flex;justify-content:space-between;align-items:center}.book-price{color:var(--accent-color)}.book-link{font-family:var(--font-sans)}.breadcrumbs{font-family:var(--font-sans);margin:0 0 16px;display:flex;gap:8px}.book-detail-grid{display:grid;grid-template-columns:minmax(280px,420px) minmax(280px,1fr);gap:24px}.detail-main-image{width:100%;max-height:580px;object-fit:cover;border-radius:8px}.detail-main-image-button{width:100%;border:none;padding:0;background:transparent;cursor:zoom-in}.thumb-grid{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}.thumb-button{padding:0;border:2px solid transparent;border-radius:6px;background:transparent;cursor:pointer}.thumb-button.active{border-color:var(--accent-color)}.thumb-image{width:72px;height:72px;object-fit:cover;border-radius:4px}.detail-title{margin:0}.detail-author,.detail-category{margin:6px 0;color:#5f5144}.price-box{margin:12px 0;font-size:1.4rem;color:var(--accent-dark);font-weight:700}.attribute-title{margin-top:20px;margin-bottom:10px}.attribute-list{margin:0;border:1px solid var(--border-color);border-radius:8px;overflow:hidden}.attribute-row{display:grid;grid-template-columns:240px 1fr;border-bottom:1px solid var(--border-color)}.attribute-row:last-child{border-bottom:none}.attribute-row dt,.attribute-row dd{margin:0;padding:10px 12px}.attribute-row dt{background:#f4ede3;font-family:var(--font-sans)}.admin-page{max-width:1100px;margin:0 auto;padding:24px}.admin-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.admin-topbar nav{display:flex;gap:14px;font-family:var(--font-sans)}.admin-card{background:#fff;border:1px solid var(--border-color);border-radius:10px;padding:18px}.admin-wide{max-width:100%}.admin-form{display:grid;gap:12px}.admin-form-grid{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(240px,1fr))}.full-width{grid-column:1 / -1}.primary-button,.secondary-button{border:none;border-radius:6px;padding:10px 14px;cursor:pointer;font-family:var(--font-sans)}.primary-button{background:var(--accent-color);color:#fff}.secondary-button{background:#e9e0d5;color:#3a2d23}.danger-button{border:none;border-radius:6px;padding:10px 14px;cursor:pointer;font-family:var(--font-sans);background:#c23a2b;color:#fff}.danger-button:disabled,.secondary-button:disabled,.primary-button:disabled{opacity:.7;cursor:not-allowed}.admin-table{width:100%;border-collapse:collapse;margin-top:12px}.admin-table th,.admin-table td{border:1px solid var(--border-color);padding:8px;text-align:left}.admin-actions-cell{display:flex;gap:8px;flex-wrap:wrap}.admin-form-actions{display:flex;gap:10px;flex-wrap:wrap}.error-box{background:#ffe6e4;border:1px solid #e5a19b;padding:10px;border-radius:6px;color:#73221b}.success-box{background:#e6f7ea;border:1px solid #97d6a5;padding:10px;border-radius:6px;color:#1f5f2d}.page-loading{color:#5f5144;font-family:var(--font-sans)}.no-results{text-align:center;padding:28px;border:1px dashed var(--border-color);border-radius:8px}.muted{color:#5f5144;font-family:var(--font-sans)}.public-page{max-width:1100px;margin:0 auto;padding:28px}.static-card{background:#fff;border:1px solid var(--border-color);border-radius:10px;padding:18px}.request-form{display:grid;gap:10px;margin-top:14px}.image-lightbox{position:fixed;inset:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:30;padding:20px}.image-lightbox-content{position:relative;width:min(980px,calc(100vw - 40px));max-height:100%}.image-lightbox-main{display:block;width:100%;height:100%;object-fit:contain;margin:0 auto;border-radius:8px}.lightbox-close{position:absolute;top:-40px;right:0;width:34px;height:34px;border-radius:50%;border:none;background:#fff;color:#222;font-size:1.4rem;cursor:pointer}.image-lightbox-stage{position:relative;width:100%;height:min(70vh,760px);background:#14141459;border-radius:8px}.back-link{margin-top:10px;display:inline-block}@media(max-width:900px){.app-container{grid-template-columns:1fr}.sidebar{position:static;height:auto;border-right:none;border-bottom:1px solid var(--border-color)}.search-panel{grid-template-columns:1fr}.header{gap:10px}.top-nav-bar{padding:0 8px;min-height:40px}.top-nav-side{display:none}.top-nav-links{width:100%;justify-content:space-around;gap:0}.top-nav-link{font-size:.9rem;padding:8px 6px}.header-main{padding-top:10px}.brand-link{font-size:1.3rem}.public-page{padding:18px}.book-detail-grid,.attribute-row,.admin-form-grid{grid-template-columns:1fr}}