@layer base{:root{--brand-navy:#0f172a;--brand-blue:#2563eb;--brand-accent:#d97706;--brand-emerald:#059669;--brand-slate:#475569;--brand-light:#f8fafc;--brand-crimson:#991b1b}html{scroll-behavior:smooth;font-size:130%}body{color:#1e293b;background-color:#f8fafc;flex-direction:column;min-height:100vh;font-family:Inter,sans-serif;display:flex}}.glass{-webkit-backdrop-filter:blur(12px);background:#ffffffe6}.book-container{perspective:1000px}.book-cover-3d{transition:transform .5s;transform:rotateY(-15deg)rotateX(5deg);box-shadow:10px 10px 20px #0003,inset -2px 0 5px #fff6}.book-container:hover .book-cover-3d{transform:rotateY(-5deg)rotateX(2deg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fadeIn{animation:.3s ease-out fadeIn}