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p{font-size:1.1rem;font-style:italic;opacity:.8}.book-viewer{width:100%;min-height:100vh;position:relative;background:linear-gradient(135deg,#667eea,#764ba2)}.book-viewer-3d{min-height:100vh;height:100vh;padding:60px 20px 40px;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;overflow-x:hidden;overflow-y:auto}.book-viewer-3d canvas{width:95vw!important;height:80vh!important;max-width:1400px!important;border-radius:15px;box-shadow:0 10px 30px #0000004d}.book-viewer-plain{min-height:100vh;padding:20px;display:flex;flex-direction:column;align-items:center;justify-content:center}.book-viewer-plain>*{max-width:90vw;width:100%}.close-book-btn{position:fixed;top:20px;left:20px;background:#000000b3;color:#fff;border:none;padding:12px 20px;border-radius:25px;font-size:1rem;font-weight:600;cursor:pointer;z-index:10000;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid 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auto;perspective:1200px}.shelf-wood{position:absolute;bottom:0;left:0;right:0;height:25px;background:linear-gradient(to bottom,#8b4513,sienna,#8b4513,#654321,#5d4037,#3e2723);border-radius:0 0 15px 15px;box-shadow:0 8px 20px #0006,inset 0 3px 8px #ffffff1a,inset 0 -3px 8px #0000004d}.shelf-wood:before{content:"";position:absolute;top:-8px;left:-5px;right:-5px;height:8px;background:linear-gradient(to bottom,sienna,#8b4513);border-radius:8px 8px 0 0;box-shadow:0 2px 5px #0000004d}.shelf-support-left,.shelf-support-right{position:absolute;bottom:0;width:15px;height:40px;background:linear-gradient(to right,#654321,#8b4513,#654321);box-shadow:2px 0 5px #0000004d}.shelf-support-left{left:0;border-radius:0 0 0 10px}.shelf-support-right{right:0;border-radius:0 0 10px}.books-row{position:absolute;bottom:25px;left:50%;transform:translate(-50%);display:flex;gap:3px;align-items:flex-end;height:280px}.book-spine{width:var(--book-width, 65px);height:280px;position:relative;cursor:pointer;transition:all .4s cubic-bezier(.175,.885,.32,1.275);transform-origin:bottom center}.book-cover{width:100%;height:100%;background:linear-gradient(to right,hsl(var(--book-hue),65%,35%),hsl(var(--book-hue),70%,45%) 15%,hsl(var(--book-hue),75%,55%),hsl(var(--book-hue),70%,45%) 85%,hsl(var(--book-hue),65%,35%));border-radius:4px 4px 0 0;box-shadow:3px 0 8px #0000004d,inset -3px 0 5px #0003,inset 3px 0 5px #ffffff1a;position:relative;overflow:hidden}.book-cover:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:repeating-linear-gradient(0deg,transparent,transparent 25px,rgba(0,0,0,.05) 25px,rgba(0,0,0,.05) 27px);border-radius:4px 4px 0 0}.book-pages{position:absolute;top:3px;right:-2px;width:4px;height:calc(100% - 6px);background:linear-gradient(to bottom,beige,#fffacd,khaki);border-radius:0 2px 2px 0;box-shadow:1px 0 3px #0003}.book-pages:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.05) 2px,rgba(0,0,0,.05) 3px)}.spine-text{position:absolute;top:50%;left:45%;transform:translate(-50%) translateY(-50%) rotate(90deg);transform-origin:center;width:220px;color:#fff;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.7);white-space:nowrap;z-index:2;text-align:center}.spine-title{font-size:16px;letter-spacing:1px;margin-right:15px}.spine-volume{font-size:13px;opacity:.9;font-style:italic}.spine-author{position:absolute;bottom:20px;left:45%;transform:translate(-50%) rotate(90deg);transform-origin:center;font-size:11px;opacity:.8;font-weight:400;letter-spacing:2px;color:#fff;text-shadow:1px 1px 2px rgba(0,0,0,.7);z-index:2}.book-decoration{position:absolute;top:15px;left:50%;transform:translate(-50%);width:3px;height:250px}.decoration-line{width:100%;height:2px;background:#ffffff4d;margin:5px 0;border-radius:1px}.leaning-book{transform:rotate(-15deg) translateY(-10px);margin-left:70px}.leaning-book .book-cover{box-shadow:-3px 5px 15px #0006,inset -3px 0 5px #0003,inset 3px 0 5px #ffffff1a}.book-spine:hover{transform:translateY(-15px) rotateY(20deg) scale(1.05);z-index:10}.book-spine:hover .book-cover{box-shadow:5px 10px 25px #00000080,inset -3px 0 5px #0003,inset 3px 0 5px #fff3}.leaning-book:hover{transform:rotate(-15deg) translateY(-25px) rotateY(20deg) scale(1.05)}@keyframes bookFall{0%{transform:translateY(0) rotateX(0) rotate(0);opacity:1}30%{transform:translateY(20px) rotateX(-10deg) rotate(5deg);opacity:.9}60%{transform:translateY(80px) rotateX(-45deg) rotate(15deg);opacity:.7}to{transform:translateY(150px) rotateX(-90deg) rotate(25deg);opacity:0}}@keyframes leaningBookFall{0%{transform:rotate(-15deg) translateY(-10px) rotateX(0);opacity:1}30%{transform:rotate(-15deg) translateY(10px) rotateX(-10deg) rotate(5deg);opacity:.9}60%{transform:rotate(-15deg) translateY(70px) rotateX(-45deg) rotate(20deg);opacity:.7}to{transform:rotate(-15deg) translateY(140px) rotateX(-90deg) rotate(35deg);opacity:0}}.book-spine.falling{animation:bookFall 1s cubic-bezier(.55,.055,.675,.19) forwards;z-index:20}.book-spine.falling.leaning-book{animation:leaningBookFall 1s cubic-bezier(.55,.055,.675,.19) forwards}.shelf-shadow{position:absolute;bottom:-15px;left:5%;right:5%;height:15px;background:radial-gradient(ellipse,rgba(0,0,0,.3) 0%,rgba(0,0,0,.1) 50%,transparent 100%);border-radius:50%}.library-footer{margin-top:60px}.library-stats{display:flex;justify-content:center;gap:60px;flex-wrap:wrap}.stat-item{text-align:center;color:#d4af37}.stat-number{display:block;font-size:2.5rem;font-weight:700;margin-bottom:5px;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.stat-label{font-size:1rem;opacity:.8;text-transform:uppercase;letter-spacing:1px}@media (max-width: 768px){.library-header h1{font-size:2.5rem}.bookshelf{height:300px;max-width:90%}.books-row{height:240px}.book-spine{height:240px;width:55px}.spine-text{width:180px;left:45%}.spine-title{font-size:14px}.spine-author{left:45%}.library-stats{gap:40px}.stat-number{font-size:2rem}}@media (max-width: 480px){.library-header h1{font-size:2rem}.bookshelf{height:250px}.books-row{height:200px;gap:2px}.book-spine{height:200px;width:45px}.spine-text{width:150px;left:45%}.spine-title{font-size:12px}.spine-volume{font-size:11px}.spine-author{font-size:10px;left:45%}}.section-navigation{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:9999;display:flex;flex-direction:column;align-items:center;gap:15px;opacity:0;transition:all .5s ease;pointer-events:none}.section-navigation.visible{opacity:1;pointer-events:all}.nav-btn{width:50px;height:50px;border:none;border-radius:50%;background:#000000b3;color:#fff;font-size:1.2rem;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.2);box-shadow:0 4px 15px #0000004d}.nav-btn:hover:not(.disabled){background:#00ff9dcc;transform:scale(1.1);box-shadow:0 6px 20px #00ff9d66;border-color:#00ff9d99}.nav-btn.disabled{opacity:.3;cursor:not-allowed;background:#64646480}.scroll-top-btn{background:#4f46e5cc;margin-bottom:20px}.scroll-top-btn:hover{background:#4f46e5;transform:scale(1.1) translateY(-2px);box-shadow:0 6px 20px #4f46e580}.prev-btn{background:#ef4444cc}.prev-btn:hover:not(.disabled){background:#ef4444;box-shadow:0 6px 20px #ef444466}.next-btn{background:#22c55ecc}.next-btn:hover:not(.disabled){background:#22c55e;box-shadow:0 6px 20px #22c55e66}.section-indicator{background:#000c;color:#fff;padding:8px 12px;border-radius:20px;font-size:.9rem;font-weight:600;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);box-shadow:0 4px 15px #0000004d;margin:10px 0}.current-section{color:#00ff9d}.separator{margin:0 5px;opacity:.7}.total-sections{opacity:.8}.section-dots{display:flex;flex-direction:column;gap:8px;margin-top:15px}.dot{width:12px;height:12px;border:none;border-radius:50%;background:#ffffff4d;cursor:pointer;transition:all .3s ease;border:2px solid transparent}.dot:hover{background:#fff9;transform:scale(1.2)}.dot.active{background:#00ff9d;border-color:#00ff9d80;box-shadow:0 0 10px #00ff9d99;transform:scale(1.3)}@media (max-width: 768px){.section-navigation{right:15px;gap:12px}.nav-btn{width:45px;height:45px;font-size:1.1rem}.section-indicator{font-size:.8rem;padding:6px 10px}.dot{width:10px;height:10px}}@media (max-width: 480px){.section-navigation{right:10px;gap:10px}.nav-btn{width:40px;height:40px;font-size:1rem}.section-indicator{font-size:.75rem;padding:5px 8px}.dot{width:8px;height:8px}}@media (display-mode: fullscreen){.section-navigation{display:none}}.nav-btn:focus,.dot:focus{outline:2px solid #fbbf24;outline-offset:2px}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.nav-btn:active{animation:pulse .2s ease}@media (prefers-contrast: high){.nav-btn{border:3px solid white}.section-indicator,.dot{border:2px solid white}}