:root{font-family:Inter,Noto Sans SC,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6;font-weight:400;color:#0f172a;background-color:#f4f5fb;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top,#fff,#f4f5fb 45%,#e4e9fb);min-height:100vh}#root{min-height:100vh}a{text-decoration:none;color:inherit}button{border:none;outline:none;padding:.65rem 1.6rem;border-radius:999px;background:linear-gradient(120deg,#4338ca,#6366f1);color:#fff;font-size:.95rem;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;box-shadow:0 12px 20px #4f46e540}button:hover{transform:translateY(-1px);box-shadow:0 16px 30px #4f46e559}button:active{transform:translateY(0);box-shadow:0 6px 16px #4f46e540}button.ghost-button{background:transparent;color:#0f172a;border:1px solid rgba(15,23,42,.2);box-shadow:none}.page{max-width:1200px;margin:0 auto;padding:clamp(1.5rem,4vw,3.5rem) clamp(1rem,3vw,2.5rem) 4rem}.page--landing{min-height:100vh}.landing-hero{margin-bottom:2.5rem;max-width:760px}.hero-eyebrow{text-transform:uppercase;letter-spacing:.2em;font-size:.85rem;color:#6366f1;font-weight:700;margin-bottom:.5rem}.landing-hero h1{font-size:clamp(2rem,6vw,3.5rem);margin:0 0 .75rem}.landing-hero p{margin:0;color:#475569}.book-grid{display:flex;flex-wrap:wrap;gap:1.5rem}.book-card{flex:1 1 280px;max-width:360px;min-width:240px;border-radius:1.5rem;border:1px solid #666;padding:1.25rem;background:#fff;display:flex;flex-direction:column;gap:1rem;text-align:left;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.book-card:hover{transform:translateY(-4px);box-shadow:0 22px 35px #0f172a26}.book-cover{width:100%;border-radius:1rem;aspect-ratio:3 / 4;background:#e0e7ff;overflow:hidden;display:flex;align-items:center;justify-content:center;position:relative}.book-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.book-card:hover .book-cover img{transform:scale(1.03)}.book-cover__hint{color:#fffffffa;font-weight:600;text-shadow:0 4px 8px rgba(0,0,0,.25)}.book-meta h3{margin:0 0 .35rem;font-size:1.1rem;color:#0f172a}.book-author{margin:0;font-size:.85rem;color:#94a3b8}.book-description{margin:0 0 .5rem;color:#475569;font-size:.9rem}.book-tags{display:flex;flex-wrap:wrap;gap:.35rem}.book-tags span{font-size:.75rem;padding:.15rem .6rem;border-radius:999px;background:#6366f11a;color:#4338ca;font-weight:600}.page--reader{min-height:100vh;display:flex;flex-direction:column;gap:clamp(1.25rem,2vw,1.75rem);padding-bottom:clamp(1.5rem,3vw,3rem)}.reader-header{display:flex;flex-direction:column;gap:1rem}.reader-header>div{max-width:640px}.reader-header h1{margin:0;font-size:clamp(1.8rem,2.6vw,2.4rem);line-height:1.1}.reader-header{padding-bottom:.25rem}.reader-canvas{position:relative;display:flex;flex:1 1 auto}.reader-back{position:absolute;top:clamp(.75rem,1.5vw,1.5rem);left:clamp(.75rem,1.5vw,1.5rem);z-index:5;background:#4f46e5f2;color:#fff;border:none;border-radius:999px;padding:.55rem 1.35rem;font-size:.95rem;font-weight:600;letter-spacing:.01em;box-shadow:0 12px 25px #4f46e540;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.reader-back:hover{transform:translateY(-2px);box-shadow:0 16px 32px #4f46e54d;background:#4338cafa}.reader-back:active{transform:translateY(0);box-shadow:0 8px 18px #4f46e540}.flip-wrapper{background:radial-gradient(circle at top,rgba(255,255,255,.08),transparent 55%),#0f172a;padding:clamp(1rem,3vw,2.25rem);border-radius:1.5rem;box-shadow:inset 0 1px #ffffff0d,0 25px 45px #0f172a59;display:flex;justify-content:center;align-items:center;overflow:hidden;flex:1 1 auto;max-height:calc(100vh - 220px);min-height:clamp(420px,60vh,820px)}.pageflip-book{--page-bg: #fffdfa;width:100%;height:100%}.pageflip-sheet{width:100%;height:100%;background:var(--page-bg);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:clamp(.35rem,.7vw,.85rem);box-shadow:inset 0 0 0 1px #0f172a14}.pageflip-sheet img{width:100%;height:100%;object-fit:contain;border-radius:.25rem;background:#fff}.pageflip-sheet--cover{background:linear-gradient(250deg,rgba(15,23,42,.18) -12%,transparent 30%);padding-left:0}.pageflip-sheet--cover img{object-fit:contain;border-radius:.25rem}.pageflip-sheet--cover:before{content:"";position:absolute;top:0;left:-.5px;width:1px;height:100%;background:#0f172a1f;box-shadow:-18px 0 28px -20px #0f172a8c}.pageflip-sheet--left{background:linear-gradient(110deg,rgba(15,23,42,.18) -12%,transparent 30%);padding-right:0}.pageflip-sheet--left:after{content:"";position:absolute;top:0;right:-.5px;width:1px;height:100%;background:#0f172a1f;box-shadow:18px 0 28px -20px #0f172a8c}.pageflip-sheet--right{background:linear-gradient(250deg,rgba(15,23,42,.18) -12%,transparent 30%);padding-left:0}.pageflip-sheet--right:before{content:"";position:absolute;top:0;left:-.5px;width:1px;height:100%;background:#0f172a1f;box-shadow:-18px 0 28px -20px #0f172a8c}.page-number{position:absolute;bottom:.75rem;right:1.5rem;font-size:.75rem;color:#475569d9;letter-spacing:.08em}.pageflip-sheet--left .page-number{right:auto;left:1.5rem}.pageflip-sheet--single{padding:.5rem;background:var(--page-bg)}.flip-state{background:#0f172a0d;border-radius:1rem;padding:2rem;text-align:center;color:#475569}.flip-state--error{color:#dc2626;background:#dc262614}@media (max-width: 768px){.landing-hero{text-align:center}.book-grid{justify-content:center}.book-card{width:100%}.flip-wrapper{padding:1rem .5rem;max-height:calc(100vh - 180px);min-height:clamp(320px,65vh,640px)}.reader-back{top:.75rem;left:.75rem;padding:.45rem 1rem;font-size:.9rem}}.pageflip-sheet--single{display:flex;align-items:center;justify-content:center}.pageflip-sheet--single img{width:100%;height:100%;object-fit:contain}