:root{--primary-color:#fca311;--bg-dark:#121212;--bg-card:#1e1e1eb3;--text-main:#fff;--text-muted:#b0b0b0;--accent:#e5e5e5}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);background:radial-gradient(circle at 100% 0,#1f1f1f 0%,#0a0a0a 100%);min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;overflow-x:hidden}h1,h2,h3,h4{font-weight:700}.app-container{max-width:1200px;margin:0 auto;padding:2rem}.header{text-align:center;margin-bottom:3rem;animation:.8s ease-out fadeInDown}.header h1{letter-spacing:-.05em;background:linear-gradient(90deg,#fca311,#ffc857);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:3.5rem}.header p{color:var(--text-muted);font-size:1.1rem}.books-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2.5rem;padding-bottom:4rem;display:grid}.book-card{background:var(--bg-card);cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid #ffffff0d;border-radius:16px;flex-direction:column;align-items:center;padding:1.5rem;transition:all .4s cubic-bezier(.175,.885,.32,1.275);animation:.6s ease-out backwards fadeInUp;display:flex}.book-card:hover{border-color:#fca3114d;transform:translateY(-12px)scale(1.02);box-shadow:0 20px 40px #0006}.book-cover-container{border-radius:8px;width:100%;height:340px;margin-bottom:1.5rem;position:relative;overflow:hidden;box-shadow:0 10px 20px #0000004d}.book-cover{object-fit:cover;width:100%;height:100%;transition:transform .6s}.book-card:hover .book-cover{transform:scale(1.08)}.book-title{text-align:center;margin-bottom:.5rem;font-size:1.25rem;line-height:1.3}.book-meta{color:var(--primary-color);font-size:.9rem;font-weight:600}.viewer-container{-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);z-index:1000;background:#0a0a0af2;flex-direction:column;width:100vw;height:100vh;animation:.4s fadeIn;display:flex;position:fixed;top:0;left:0}.viewer-header{border-bottom:1px solid #ffffff0d;justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex}.viewer-header h2{color:var(--accent);font-size:1.5rem}.close-btn{color:#fff;cursor:pointer;background:#ffffff1a;border:none;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.5rem;transition:all .2s;display:flex}.close-btn:hover{background:#fca311cc;transform:rotate(90deg)}.viewer-content-flip{flex:1;justify-content:center;align-items:center;width:100%;padding:1rem;display:flex;position:relative}.book-page{background-color:#fff;overflow:hidden;box-shadow:inset 0 0 20px #0000001a}.book-page.--left{border-right:0;box-shadow:inset -7px 0 30px -7px #0006}.book-page.--right{border-left:0;box-shadow:inset 7px 0 30px -7px #0006}.page-content{background:#f0f0f0;justify-content:center;align-items:center;width:100%;height:100%;display:flex}.page-content img{object-fit:fill;width:100%;height:100%;display:block}.viewer-footer{text-align:center;color:var(--text-muted);border-top:1px solid #ffffff0d;padding:1rem;font-size:.9rem}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}