@import"https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap";:root{--color-bg: #0f0f1a;--color-bg-card: #1a1a2e;--color-bg-elevated: #16213e;--color-surface: #1e1e35;--color-border: rgba(255,255,255,.08);--color-border-hover: rgba(255,255,255,.15);--color-primary: #f59e0b;--color-primary-hover: #d97706;--color-primary-light: rgba(245,158,11,.12);--color-accent: #8b5cf6;--color-accent-light: rgba(139,92,246,.12);--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-success: #22c55e;--color-error: #ef4444;--color-star: #f59e0b;--font-display: "Playfair Display", Georgia, serif;--font-body: "Inter", -apple-system, sans-serif;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--space-3xl: 64px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-pill: 9999px;--shadow-sm: 0 1px 3px rgba(0,0,0,.4);--shadow-md: 0 4px 16px rgba(0,0,0,.4);--shadow-lg: 0 8px 32px rgba(0,0,0,.5);--shadow-card: 0 2px 12px rgba(0,0,0,.4);--shadow-glow: 0 0 24px rgba(245,158,11,.2);--transition: .2s ease;--transition-slow: .4s ease;--navbar-height: 64px;--mobile-nav-height: 60px;--max-width: 1280px;--sidebar-width: 260px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-body);background-color:var(--color-bg);color:var(--color-text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}img{max-width:100%;display:block}input,textarea,select{font-family:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding-top:var(--navbar-height);padding-bottom:var(--mobile-nav-height)}.section-container{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg)}h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.2}h1{font-size:clamp(1.8rem,4vw,2.5rem)}h2{font-size:clamp(1.4rem,3vw,1.8rem)}h3{font-size:clamp(1.1rem,2vw,1.3rem)}.btn-primary{display:inline-flex;align-items:center;gap:var(--space-sm);padding:10px 20px;background:var(--color-primary);color:#0f0f1a;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:background var(--transition),transform var(--transition),box-shadow var(--transition);cursor:pointer;white-space:nowrap}.btn-primary:hover{background:var(--color-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-ghost{display:inline-flex;align-items:center;gap:var(--space-sm);padding:10px 20px;background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:14px;font-weight:500;transition:all var(--transition);cursor:pointer}.btn-ghost:hover{border-color:var(--color-border-hover);color:var(--color-text-primary);background:#ffffff0a}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--navbar-height);background:#0f0f1aeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}.navbar-container{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg);height:100%;display:flex;align-items:center;gap:var(--space-xl)}.navbar-logo{display:flex;align-items:center;gap:var(--space-sm);flex-shrink:0;text-decoration:none}.logo-icon{color:var(--color-primary)}.logo-text{font-family:var(--font-display);font-size:1.3rem;font-weight:700;color:var(--color-text-primary)}.navbar-search{flex:1;max-width:480px;display:flex;align-items:center;gap:var(--space-sm);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:6px 6px 6px 14px;transition:border-color var(--transition)}.navbar-search:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.search-icon{color:var(--color-text-muted);flex-shrink:0}.search-input{flex:1;background:none;border:none;outline:none;font-size:14px;color:var(--color-text-primary)}.search-input::placeholder{color:var(--color-text-muted)}.search-btn{background:var(--color-primary);color:#0f0f1a;border:none;border-radius:var(--radius-pill);padding:6px 16px;font-size:13px;font-weight:600;cursor:pointer;transition:background var(--transition)}.search-btn:hover{background:var(--color-primary-hover)}.navbar-links{display:flex;align-items:center;gap:var(--space-md);flex-shrink:0}.nav-link{font-size:14px;font-weight:500;color:var(--color-text-secondary);transition:color var(--transition);background:none;border:none;padding:4px;cursor:pointer;display:flex;align-items:center;gap:4px}.nav-link:hover{color:var(--color-text-primary)}.nav-dropdown{position:relative}.dropdown-menu{position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-md);display:flex;gap:var(--space-xl);min-width:380px;box-shadow:var(--shadow-lg);z-index:200}.dropdown-section{display:flex;flex-direction:column;gap:2px;flex:1}.dropdown-label{font-size:11px;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;padding:4px 8px;margin-bottom:4px}.dropdown-item{display:flex;align-items:center;gap:var(--space-sm);padding:7px 8px;border-radius:var(--radius-sm);font-size:13px;color:var(--color-text-secondary);transition:all var(--transition)}.dropdown-item:hover{background:var(--color-primary-light);color:var(--color-primary)}.navbar-auth{margin-left:auto;display:flex;align-items:center;gap:var(--space-md)}.auth-buttons{display:flex;gap:var(--space-sm)}.user-menu-wrapper{position:relative}.user-avatar-btn{display:flex;align-items:center;gap:var(--space-sm);background:none;border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:6px 12px 6px 6px;cursor:pointer;transition:border-color var(--transition)}.user-avatar-btn:hover{border-color:var(--color-border-hover)}.user-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover}.user-avatar-fallback{width:28px;height:28px;border-radius:50%;background:var(--color-primary);color:#0f0f1a;font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}.user-name{font-size:13px;font-weight:500}.user-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);min-width:200px;box-shadow:var(--shadow-lg);overflow:hidden;z-index:200}.user-dropdown-header{padding:var(--space-md);border-bottom:1px solid var(--color-border)}.user-dropdown-name{font-weight:600;font-size:14px}.user-dropdown-email{font-size:12px;color:var(--color-text-muted);margin-top:2px}.user-dropdown-item{display:flex;align-items:center;gap:var(--space-sm);padding:10px var(--space-md);font-size:14px;color:var(--color-text-secondary);transition:all var(--transition);background:none;border:none;width:100%;text-align:left;cursor:pointer}.user-dropdown-item:hover{background:var(--color-surface);color:var(--color-text-primary)}.user-dropdown-item.logout:hover{color:var(--color-error)}.user-dropdown-divider{height:1px;background:var(--color-border)}.mobile-menu-toggle{display:none;background:none;border:none;color:var(--color-text-primary);padding:4px}.mobile-menu{background:var(--color-bg-card);border-top:1px solid var(--color-border);padding:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm)}.mobile-search{display:flex;align-items:center;gap:var(--space-sm);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:10px 12px;margin-bottom:var(--space-sm)}.mobile-search-input{flex:1;background:none;border:none;outline:none;font-size:14px;color:var(--color-text-primary)}.mobile-nav-link{padding:10px 4px;font-size:15px;color:var(--color-text-secondary);border-bottom:1px solid var(--color-border);display:block}.mobile-nav-section{font-size:11px;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.1em;padding:12px 4px 4px}.mobile-auth-buttons{display:flex;flex-direction:column;gap:var(--space-sm);margin-top:var(--space-md)}.full-width{width:100%;justify-content:center}.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:var(--mobile-nav-height);background:#1a1a2ef5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--color-border);z-index:100;padding:4px 0}.mobile-bottom-link{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;flex:1;padding:4px;color:var(--color-text-muted);font-size:10px;font-weight:500;transition:color var(--transition);background:none;border:none;cursor:pointer;text-decoration:none}.mobile-bottom-link.active,.mobile-bottom-link:hover{color:var(--color-primary)}.footer{background:var(--color-bg-card);border-top:1px solid var(--color-border);padding:var(--space-3xl) 0 var(--space-xl);margin-bottom:var(--mobile-nav-height)}.footer-container{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg);display:flex;gap:var(--space-3xl);flex-wrap:wrap}.footer-brand{display:flex;flex-direction:column;gap:var(--space-sm)}.footer-brand span{font-family:var(--font-display);font-size:1.3rem;font-weight:700}.footer-brand svg{color:var(--color-primary)}.footer-brand p{color:var(--color-text-muted);font-size:14px;max-width:200px}.footer-links{display:flex;gap:var(--space-3xl);flex-wrap:wrap;flex:1}.footer-links>div{display:flex;flex-direction:column;gap:var(--space-sm)}.footer-links h4{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);margin-bottom:4px}.footer-links a{font-size:14px;color:var(--color-text-secondary);transition:color var(--transition)}.footer-links a:hover{color:var(--color-text-primary)}.footer-bottom{max-width:var(--max-width);margin:var(--space-2xl) auto 0;padding:var(--space-lg) var(--space-lg) 0;border-top:1px solid var(--color-border);display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--color-text-muted);flex-wrap:wrap;gap:var(--space-md)}.footer-social{display:flex;gap:var(--space-md)}.footer-social a{color:var(--color-text-muted);transition:color var(--transition)}.footer-social a:hover{color:var(--color-text-primary)}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:var(--space-lg)}.books-row{display:flex;gap:var(--space-md);overflow-x:auto;padding-bottom:var(--space-md);scrollbar-width:thin;scrollbar-color:var(--color-border) transparent}.books-row::-webkit-scrollbar{height:4px}.books-row::-webkit-scrollbar-track{background:transparent}.books-row::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:2px}.books-row>*{flex-shrink:0}.book-card{display:flex;flex-direction:column;gap:var(--space-sm);text-decoration:none;transition:transform var(--transition);cursor:pointer}.book-card:hover{transform:translateY(-3px)}.book-card--row{width:140px}.book-card--grid{width:100%}.book-cover-wrapper{position:relative;border-radius:var(--radius-md);overflow:hidden;background:var(--color-surface)}.book-cover-wrapper:after{content:"";position:absolute;bottom:0;left:0;right:0;height:30%;background:linear-gradient(to top,rgba(0,0,0,.4),transparent);pointer-events:none}.book-cover{width:100%;aspect-ratio:2/3;object-fit:cover;display:block}.book-cover--placeholder{display:flex;align-items:center;justify-content:center;padding:var(--space-md)}.placeholder-title{color:#fffc;font-family:var(--font-display);font-size:12px;text-align:center;word-break:break-word}.save-btn{position:absolute;top:8px;right:8px;background:#0f0f1acc;border:none;border-radius:var(--radius-sm);padding:6px;color:var(--color-text-secondary);opacity:0;transition:all var(--transition);cursor:pointer;display:flex}.book-card:hover .save-btn,.save-btn--saved{opacity:1}.save-btn--saved{color:var(--color-primary)}.book-info{padding:0 2px}.book-title{font-size:13px;font-weight:600;color:var(--color-text-primary);line-height:1.3;margin-bottom:3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-author{font-size:12px;color:var(--color-text-muted);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-rating{display:flex;align-items:center;gap:3px;font-size:12px;color:var(--color-text-secondary)}.star-icon{color:var(--color-star);fill:var(--color-star)}.ratings-count{color:var(--color-text-muted)}.book-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}.book-tag{font-size:10px;padding:2px 6px;background:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-pill);font-weight:500}.shimmer{background:linear-gradient(90deg,var(--color-surface) 0%,var(--color-bg-elevated) 50%,var(--color-surface) 100%);background-size:200% 100%;animation:shimmer 1.5s infinite}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-cover{width:100%;aspect-ratio:2/3;border-radius:var(--radius-md)}.skeleton-info{display:flex;flex-direction:column;gap:6px;padding:4px 2px}.skeleton-line{height:12px;border-radius:4px}.book-card.skeleton{pointer-events:none}.shelf-card.skeleton{height:180px;border-radius:var(--radius-lg)}.category-pill.skeleton{height:40px;width:120px;border-radius:var(--radius-pill)}.hero{background:linear-gradient(135deg,#0f0f1a,#1a1a35,#0f1a2e);padding:var(--space-3xl) var(--space-lg);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;min-height:420px}.hero:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 60% 50%,rgba(245,158,11,.06) 0%,transparent 70%);pointer-events:none}.hero-content{max-width:680px;width:100%;text-align:center;position:relative;z-index:1}.hero-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:700;line-height:1.15;margin-bottom:var(--space-md)}.hero-title-highlight{color:var(--color-primary)}.hero-subtitle{font-size:16px;color:var(--color-text-secondary);margin-bottom:var(--space-xl);max-width:520px;margin-left:auto;margin-right:auto}.hero-search{display:flex;align-items:center;gap:var(--space-sm);background:var(--color-bg-card);border:1.5px solid var(--color-border);border-radius:var(--radius-xl);padding:8px 8px 8px 18px;max-width:560px;margin:0 auto var(--space-lg);transition:border-color var(--transition),box-shadow var(--transition)}.hero-search:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 4px var(--color-primary-light)}.hero-search-icon{color:var(--color-text-muted);flex-shrink:0}.hero-search-input{flex:1;background:none;border:none;outline:none;font-size:15px;color:var(--color-text-primary)}.hero-search-input::placeholder{color:var(--color-text-muted)}.hero-search-btn{background:var(--color-primary);color:#0f0f1a;border:none;border-radius:var(--radius-lg);padding:10px 20px;font-size:14px;font-weight:700;cursor:pointer;transition:background var(--transition);white-space:nowrap}.hero-search-btn:hover{background:var(--color-primary-hover)}.hero-suggestions{display:flex;align-items:center;gap:var(--space-sm);justify-content:center;flex-wrap:wrap;font-size:13px;color:var(--color-text-muted)}.suggestion-chip{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:4px 12px;font-size:13px;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition)}.suggestion-chip:hover{border-color:var(--color-primary);color:var(--color-primary)}.home-section{padding:var(--space-2xl) 0}.section-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--space-lg);gap:var(--space-md)}.section-header-left{display:flex;align-items:center;gap:var(--space-md)}.section-icon{color:var(--color-primary);flex-shrink:0}.section-title{font-size:1.4rem}.section-subtitle{font-size:13px;color:var(--color-text-muted);margin-top:2px}.see-all-btn{background:none;border:none;color:var(--color-primary);font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;padding:4px 0;transition:opacity var(--transition)}.see-all-btn:hover{opacity:.8}.categories-pills-row{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.category-pill{display:inline-flex;align-items:center;gap:var(--space-sm);padding:8px 16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-pill);font-size:13px;font-weight:500;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition);white-space:nowrap}.category-pill:hover{border-color:var(--category-color, var(--color-primary));color:var(--category-color, var(--color-primary));background:color-mix(in srgb,var(--category-color, var(--color-primary)) 10%,transparent)}.category-pill-icon{font-size:16px}.home-cta{background:linear-gradient(135deg,var(--color-accent-light),var(--color-primary-light));border:1px solid var(--color-border);border-radius:var(--radius-xl);margin:var(--space-2xl) var(--space-lg);padding:var(--space-3xl) var(--space-lg);text-align:center}.cta-content h2{margin-bottom:var(--space-md)}.cta-content p{color:var(--color-text-secondary);margin-bottom:var(--space-xl)}.cta-buttons{display:flex;gap:var(--space-md);justify-content:center;flex-wrap:wrap}.auth-layout{min-height:100vh;display:flex}.auth-brand-panel{flex:1;background:linear-gradient(135deg,#0f0f1a,#1a1a2e);padding:var(--space-3xl) var(--space-2xl);display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.auth-brand-panel:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 30% 50%,rgba(245,158,11,.08) 0%,transparent 60%)}.auth-logo{display:flex;align-items:center;gap:var(--space-sm);font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--color-text-primary);position:relative;z-index:1}.auth-logo svg{color:var(--color-primary)}.auth-quote{position:relative;z-index:1}.auth-quote blockquote{font-family:var(--font-display);font-size:clamp(1.1rem,2vw,1.4rem);font-style:italic;color:var(--color-text-secondary);line-height:1.6;margin-bottom:var(--space-md);border-left:3px solid var(--color-primary);padding-left:var(--space-md)}.auth-quote cite{color:var(--color-text-muted);font-size:14px}.auth-stats{display:flex;gap:var(--space-2xl);position:relative;z-index:1}.auth-stats>div{display:flex;flex-direction:column;gap:4px}.auth-stats strong{font-size:1.5rem;color:var(--color-primary);font-weight:700}.auth-stats span{font-size:13px;color:var(--color-text-muted)}.auth-form-panel{width:440px;background:var(--color-bg-card);display:flex;align-items:center;justify-content:center;padding:var(--space-2xl)}.auth-form{width:100%;max-width:360px}.auth-form-header{margin-bottom:var(--space-xl)}.auth-form-header h1{font-size:1.8rem;margin-bottom:6px}.auth-form-header p{color:var(--color-text-secondary);font-size:14px}.google-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--space-md);padding:11px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--color-text-primary);cursor:pointer;transition:all var(--transition)}.google-btn:hover{background:var(--color-bg-elevated);border-color:var(--color-border-hover)}.auth-divider{display:flex;align-items:center;gap:var(--space-md);margin:var(--space-lg) 0;color:var(--color-text-muted);font-size:13px}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--color-border)}.auth-fields{display:flex;flex-direction:column;gap:var(--space-md)}.field-group{display:flex;flex-direction:column;gap:6px}.field-group label{font-size:13px;font-weight:500;color:var(--color-text-secondary)}.input-wrapper{position:relative;display:flex;align-items:center}.input-icon{position:absolute;left:12px;color:var(--color-text-muted);pointer-events:none}.input-icon-right{position:absolute;right:12px;background:none;border:none;color:var(--color-text-muted);cursor:pointer;display:flex;align-items:center}.form-input{width:100%;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:10px 12px 10px 38px;font-size:14px;color:var(--color-text-primary);outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.form-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.form-input.input-error{border-color:var(--color-error)}.field-error{font-size:12px;color:var(--color-error)}.submit-btn{width:100%;justify-content:center;padding:12px;font-size:15px}.forgot-password{text-align:right}.forgot-password a{font-size:13px;color:var(--color-primary)}.auth-switch{text-align:center;font-size:14px;color:var(--color-text-muted);margin-top:var(--space-lg)}.auth-switch a{color:var(--color-primary);font-weight:500}.terms-note{font-size:12px;color:var(--color-text-muted)}.terms-note a{color:var(--color-text-secondary);text-decoration:underline}.search-page{max-width:var(--max-width);margin:0 auto;padding:var(--space-xl) var(--space-lg)}.search-header{display:flex;gap:var(--space-md);align-items:center;margin-bottom:var(--space-lg);flex-wrap:wrap}.search-bar-wrapper{flex:1;min-width:280px;display:flex;align-items:center;gap:var(--space-sm);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:10px 14px;transition:border-color var(--transition)}.search-bar-wrapper:focus-within{border-color:var(--color-primary)}.search-bar-icon{color:var(--color-text-muted);flex-shrink:0}.search-bar-input{flex:1;background:none;border:none;outline:none;font-size:15px;color:var(--color-text-primary)}.clear-search{background:none;border:none;color:var(--color-text-muted);cursor:pointer;display:flex}.search-controls{display:flex;gap:var(--space-sm);align-items:center}.sort-select{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:9px 12px;font-size:13px;color:var(--color-text-primary);outline:none;cursor:pointer}.filter-toggle-btn{display:flex;align-items:center;gap:var(--space-sm);padding:9px 16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:13px;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition);position:relative}.filter-toggle-btn.has-filters{border-color:var(--color-primary);color:var(--color-primary)}.filter-count-badge{background:var(--color-primary);color:#0f0f1a;border-radius:50%;width:18px;height:18px;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}.search-layout{display:flex;gap:var(--space-xl);align-items:flex-start}.filter-sidebar{width:var(--sidebar-width);flex-shrink:0;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);position:sticky;top:calc(var(--navbar-height) + var(--space-md))}.filter-sidebar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg)}.filter-sidebar-header h3{display:flex;align-items:center;gap:var(--space-sm);font-size:15px}.clear-filters-btn{background:none;border:none;color:var(--color-primary);font-size:12px;cursor:pointer}.filter-group{margin-bottom:var(--space-lg)}.filter-label{display:block;font-size:12px;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:var(--space-sm)}.filter-select{width:100%;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:8px 10px;font-size:13px;color:var(--color-text-primary);outline:none;cursor:pointer}.year-range{display:flex;gap:var(--space-sm);align-items:center}.year-input{flex:1;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:8px;font-size:13px;color:var(--color-text-primary);outline:none;text-align:center}.rating-filter{display:flex;flex-direction:column;gap:4px}.rating-filter-btn{padding:6px 10px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-star);font-size:14px;cursor:pointer;text-align:left;transition:all var(--transition)}.rating-filter-btn.active,.rating-filter-btn:hover{background:var(--color-primary-light);border-color:var(--color-primary)}.search-results{flex:1;min-width:0}.results-meta{display:flex;align-items:center;gap:var(--space-md);flex-wrap:wrap;margin-bottom:var(--space-lg)}.results-count{font-size:14px;color:var(--color-text-muted)}.active-filters{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.filter-chip{display:flex;align-items:center;gap:4px;background:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-pill);padding:4px 10px;font-size:12px;font-weight:500}.filter-chip button{background:none;border:none;cursor:pointer;display:flex;color:inherit;opacity:.7}.no-results{text-align:center;padding:var(--space-3xl);color:var(--color-text-muted)}.no-results svg{margin:0 auto var(--space-lg);opacity:.3}.no-results h3{margin-bottom:var(--space-sm)}.loading-more{display:flex;align-items:center;justify-content:center;gap:var(--space-md);padding:var(--space-xl);color:var(--color-text-muted)}.end-message{text-align:center;color:var(--color-text-muted);font-size:13px;padding:var(--space-lg)}.book-hero{background:linear-gradient(to bottom,var(--color-bg-elevated),var(--color-bg));padding:var(--space-2xl) var(--space-lg)}.book-hero-container{max-width:var(--max-width);margin:0 auto;display:flex;gap:var(--space-2xl);align-items:flex-start}.book-cover-large-wrapper{flex-shrink:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}.book-cover-large{width:200px;display:block}.book-cover-large--placeholder{width:200px;height:300px;display:flex;align-items:center;justify-content:center;background:var(--color-surface);color:var(--color-text-muted)}.book-hero-info{flex:1;display:flex;flex-direction:column;gap:var(--space-md)}.book-title-large{font-size:clamp(1.5rem,3vw,2.2rem)}.book-subtitle{color:var(--color-text-secondary);font-size:16px}.book-authors-large{color:var(--color-primary);font-size:15px;font-weight:500}.rating-summary{display:flex;align-items:center;gap:var(--space-sm)}.rating-stars-large{display:flex;gap:1px}.star-filled{color:var(--color-star);font-size:20px}.star-empty{color:var(--color-border);font-size:20px}.rating-number{font-size:20px;font-weight:700}.rating-total{color:var(--color-text-muted);font-size:14px}.book-meta-chips{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.meta-chip{display:flex;align-items:center;gap:5px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:5px 12px;font-size:13px;color:var(--color-text-secondary)}.book-categories{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.category-badge{padding:5px 12px;background:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-pill);font-size:13px;font-weight:500;transition:background var(--transition)}.category-badge:hover{background:var(--color-primary);color:#0f0f1a}.book-actions{display:flex;gap:var(--space-sm);flex-wrap:wrap}.btn-add-shelf{padding:12px 24px;font-size:15px}.publisher-info{font-size:13px;color:var(--color-text-muted)}.book-detail-body{max-width:var(--max-width);margin:0 auto;padding:var(--space-2xl) var(--space-lg)}.book-section{margin-bottom:var(--space-3xl)}.book-section h2{margin-bottom:var(--space-lg);font-size:1.4rem}.book-description{color:var(--color-text-secondary);line-height:1.8;font-size:15px}.read-more-btn{background:none;border:none;color:var(--color-primary);font-size:13px;cursor:pointer;margin-top:var(--space-sm);display:flex;align-items:center;gap:4px}.reviews-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg)}.reviews-header h2 span{color:var(--color-text-muted);font-size:1rem}.reviews-list{display:flex;flex-direction:column;gap:var(--space-lg)}.review-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg)}.review-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--space-md)}.reviewer-info{display:flex;gap:var(--space-md);align-items:center}.reviewer-avatar{width:40px;height:40px;border-radius:50%;object-fit:cover}.reviewer-avatar-fallback{width:40px;height:40px;border-radius:50%;background:var(--color-accent);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff}.reviewer-name{font-weight:600;font-size:14px}.review-date{font-size:12px;color:var(--color-text-muted)}.review-stars{color:var(--color-star);font-size:16px;letter-spacing:1px}.review-title{font-weight:600;margin-bottom:var(--space-sm)}.review-body{color:var(--color-text-secondary);font-size:14px;line-height:1.7}.review-body.truncated{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.spoiler-warning{display:flex;align-items:center;gap:4px;background:#ef44441a;color:var(--color-error);padding:4px 10px;border-radius:var(--radius-sm);font-size:12px;margin-bottom:var(--space-sm);width:fit-content}.no-reviews{padding:var(--space-2xl);text-align:center;color:var(--color-text-muted);background:var(--color-surface);border-radius:var(--radius-lg)}.review-form{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);margin-bottom:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-md)}.review-form h3{margin-bottom:0}.review-form .form-input{padding:10px 12px}.review-textarea{resize:vertical}.spoiler-checkbox{display:flex;align-items:center;gap:var(--space-sm);font-size:13px;color:var(--color-text-secondary);cursor:pointer}.star-rating-input{display:flex;align-items:center;gap:var(--space-sm)}.star-btn{background:none;border:none;font-size:28px;color:var(--color-border);cursor:pointer;transition:color var(--transition),transform var(--transition)}.star-btn.active{color:var(--color-star)}.star-btn:hover{transform:scale(1.2)}.rating-label{font-size:13px;color:var(--color-text-muted)}.similar-books-row{display:flex;gap:var(--space-md);overflow-x:auto;padding-bottom:var(--space-sm)}.similar-books-row>*{flex-shrink:0;width:140px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:999;padding:var(--space-lg)}.modal{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-xl);width:100%;max-width:360px;display:flex;flex-direction:column;gap:var(--space-md)}.modal h3{font-size:1.2rem}.shelf-options{display:flex;flex-direction:column;gap:var(--space-sm)}.shelf-option-btn{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text-primary);font-size:14px;cursor:pointer;transition:all var(--transition);text-align:left}.shelf-option-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.shelf-count{margin-left:auto;color:var(--color-text-muted);font-size:12px}.modal-close{width:100%;justify-content:center}.profile-page{max-width:720px;margin:0 auto;padding:var(--space-2xl) var(--space-lg)}.profile-header{display:flex;align-items:flex-start;gap:var(--space-lg);margin-bottom:var(--space-2xl);flex-wrap:wrap}.profile-avatar-wrapper{flex-shrink:0}.profile-avatar{width:80px;height:80px;border-radius:50%;object-fit:cover}.profile-avatar-fallback{width:80px;height:80px;border-radius:50%;background:var(--color-primary);color:#0f0f1a;font-size:2rem;font-weight:700;display:flex;align-items:center;justify-content:center}.profile-name-area{flex:1;display:flex;flex-direction:column;gap:6px}.profile-name-area h1{font-size:1.6rem}.profile-email{color:var(--color-text-muted);font-size:14px}.profile-bio{color:var(--color-text-secondary);font-size:14px}.reader-type-badge{display:inline-flex;align-items:center;padding:4px 12px;background:var(--color-accent-light);color:var(--color-accent);border-radius:var(--radius-pill);font-size:13px;font-weight:500}.edit-btn{margin-left:auto}.profile-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md);margin-bottom:var(--space-2xl)}.stat-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--space-sm)}.stat-card svg{color:var(--color-primary)}.stat-card strong{font-size:1.6rem;font-weight:700}.stat-card span{font-size:13px;color:var(--color-text-muted)}.profile-edit-form{display:flex;flex-direction:column;gap:var(--space-lg)}.profile-edit-form .form-input{padding:10px 12px}.reader-type-options{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-sm)}.reader-type-option{display:flex;flex-direction:column;padding:var(--space-md);background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition)}.reader-type-option input{display:none}.reader-type-option.selected{border-color:var(--color-primary);background:var(--color-primary-light)}.reader-type-option span{font-size:13px;font-weight:600}.reader-type-option small{font-size:11px;color:var(--color-text-muted);margin-top:2px}.genre-picker{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.genre-chip{padding:6px 14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-pill);font-size:13px;cursor:pointer;transition:all var(--transition);color:var(--color-text-secondary)}.genre-chip.selected{background:var(--color-primary-light);border-color:var(--color-primary);color:var(--color-primary)}.form-actions{display:flex;gap:var(--space-md);flex-wrap:wrap}.shelves-page{padding:var(--space-2xl) 0}.shelves-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--space-xl)}.shelves-header h1{display:flex;align-items:center;gap:var(--space-sm)}.new-shelf-form{display:flex;gap:var(--space-sm);margin-bottom:var(--space-xl);flex-wrap:wrap}.new-shelf-form .form-input{flex:1;min-width:200px;padding:10px 12px}.shelves-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--space-lg)}.shelf-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;transition:all var(--transition);position:relative;cursor:pointer;text-decoration:none}.shelf-card:hover{border-color:var(--color-primary);transform:translateY(-2px)}.shelf-covers-preview{height:120px;background:var(--color-surface);display:flex;gap:4px;padding:4px;overflow:hidden}.shelf-cover-thumb{flex:1;object-fit:cover;border-radius:4px}.shelf-empty-placeholder{flex:1;display:flex;align-items:center;justify-content:center;color:var(--color-text-muted)}.shelf-card-info{padding:var(--space-md)}.shelf-card-info h3{font-size:15px;margin-bottom:4px}.shelf-card-info p{font-size:13px;color:var(--color-text-muted)}.shelf-desc{font-size:12px;color:var(--color-text-muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.default-badge{position:absolute;top:8px;right:8px;background:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-pill);padding:2px 8px;font-size:11px;font-weight:600}.shelf-detail-page{padding:var(--space-2xl) 0}.shelf-detail-header{margin-bottom:var(--space-xl)}.back-link{display:inline-flex;align-items:center;gap:var(--space-sm);color:var(--color-text-muted);font-size:14px;margin-bottom:var(--space-md);transition:color var(--transition)}.back-link:hover{color:var(--color-primary)}.empty-shelf{text-align:center;padding:var(--space-3xl);color:var(--color-text-muted)}.empty-shelf svg{margin:0 auto var(--space-lg);opacity:.3}.category-hero{padding:var(--space-3xl) var(--space-lg);background:linear-gradient(135deg,color-mix(in srgb,var(--category-color) 15%,var(--color-bg)) 0%,var(--color-bg) 100%);margin-bottom:var(--space-2xl)}.category-hero-content{max-width:var(--max-width);margin:0 auto;text-align:center}.category-hero-icon{font-size:3rem;display:block;margin-bottom:var(--space-md)}.category-book-count{display:inline-block;margin-top:var(--space-md);padding:4px 14px;background:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-pill);font-size:13px;font-weight:500}.not-found-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:var(--space-lg);text-align:center;padding:var(--space-xl)}.not-found-page h1{font-size:6rem;color:var(--color-primary);font-family:var(--font-display)}.not-found-page svg{color:var(--color-text-muted);opacity:.3}.error-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:var(--space-lg);text-align:center}.spinner{width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.mobile-bottom-nav,.mobile-menu-toggle{display:flex}.navbar-search,.navbar-links,.auth-buttons,.user-name,.auth-brand-panel{display:none}.auth-form-panel{width:100%;padding:var(--space-xl) var(--space-lg)}.hero{padding:var(--space-2xl) var(--space-md);min-height:360px}.hero-search{padding:6px 6px 6px 14px}.hero-search-btn{padding:8px 14px;font-size:13px}.books-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:var(--space-md)}.book-card--row{width:130px}.book-hero-container{flex-direction:column;align-items:center}.book-cover-large{width:160px}.book-cover-large--placeholder{width:160px;height:240px}.book-hero-info{text-align:center;align-items:center}.book-actions{justify-content:center}.search-layout{flex-direction:column}.filter-sidebar{width:100%;position:static}.profile-stats{grid-template-columns:repeat(3,1fr)}.reader-type-options{grid-template-columns:1fr 1fr}.footer{margin-bottom:var(--mobile-nav-height);padding-top:var(--space-2xl)}.footer-container{flex-direction:column;gap:var(--space-xl)}.footer-links{gap:var(--space-xl)}}@media (max-width: 480px){:root{--space-lg: 14px}.books-grid{grid-template-columns:repeat(2,1fr)}.profile-stats{grid-template-columns:repeat(3,1fr)}.hero-suggestions{display:none}.shelves-grid{grid-template-columns:1fr}}@media (min-width: 769px){.mobile-menu-toggle,.mobile-menu{display:none!important}.footer{margin-bottom:0}.main-content{padding-bottom:0}}