:root{--font-neutra: "Neutra Text Book", Arial, sans-serif;--font-calibri: "Calibri", Arial, sans-serif;--color-primary: #181433;--color-secondary: #0096dc;--color-tertiary: #fdc700;--color-bg: var(--color-primary);--color-text: #E5E5E5}@font-face{font-family:Neutra Text Book;src:url("fonts/Neutra Text Book.otf") format("opentype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Calibri;src:url(fonts/calibri-regular.ttf) format("truetype");font-weight:400;font-style:normal;font-display:swap}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-neutra);background-color:var(--color-bg);color:var(--color-text);min-height:100vh}.brand-header{background:transparent;color:var(--color-text);padding:1.5rem 2rem;display:flex;align-items:center;justify-content:center;gap:1rem}.brand-header h1{font-family:var(--font-neutra);font-size:1.25rem;font-weight:600;text-align:center;width:100%}.viewer-wrapper{width:100%;max-width:none;margin:1rem auto;padding:0 1rem}.controls{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem}.controls label{font-weight:500}.controls select{padding:.5rem .8rem;border:1px solid rgba(255,255,255,.08);border-radius:8px;font-size:1rem;background-color:#ffffff08;color:var(--color-text);min-width:280px}#flipbook{width:100%;height:calc(100vh - 160px);min-height:520px;background:linear-gradient(180deg,#ffffff05,#ffffff03);border-radius:12px;overflow:hidden;box-shadow:0 20px 40px #00000080}#flipbook>*{width:100%!important;height:100%!important}.pfb-branding .brand-root{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;height:100%;padding:2rem;background:linear-gradient(180deg,#0009,#000c);color:var(--color-text)}.pfb-branding .brand-root img{width:88px;height:auto}.pfb-branding .brand-root h3{font-family:var(--font-neutra);margin:0;font-size:1.25rem}.pfb-branding .brand-root p{margin:0;opacity:.9}.pfb-container{position:relative;width:100%;height:100%;background-color:#333;font-family:sans-serif;display:flex;flex-direction:column;align-items:center;overflow:hidden}.pfb-toolbar{background:#000000d9;min-width:350px;padding:10px 20px;margin-top:10px;border-radius:30px;display:flex;justify-content:center;align-items:center;gap:15px;z-index:100;box-shadow:0 4px 10px #0000004d}.pfb-btn{background:transparent;border:none;color:#ddd;font-size:18px;cursor:pointer;transition:transform .2s,color .2s}.pfb-btn:hover{color:#fff;transform:scale(1.1)}.pfb-btn:active{transform:scale(.95)}.pfb-page-control{display:flex;align-items:center;color:#fff;font-size:14px;font-family:monospace}.pfb-page-input{background:transparent;border:none;border-bottom:1px solid #777;color:#fff;width:50px;text-align:center;font-size:14px;margin-right:5px;outline:none}.pfb-page-input:focus{border-bottom:1px solid #fff}.pfb-book-wrapper{flex-grow:1;width:100%;display:flex;justify-content:center;align-items:center;padding:20px;box-sizing:border-box;overflow:hidden;position:relative}.pfb-book{position:relative;box-shadow:0 0 20px #00000080;transition:transform .6s cubic-bezier(.25,1,.5,1)}.pfb-page{overflow:hidden;position:absolute;top:0;left:0;width:100%;height:100%;margin:0;padding:0}.pfb-branding{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;justify-content:center;opacity:1;z-index:1;pointer-events:none}.pfb-brand-logo{font-size:40px;color:#e0e0e0;margin-bottom:10px}.pfb-brand-text{font-size:14px;font-weight:700;color:#d0d0d0;text-transform:uppercase;letter-spacing:2px}.pfb-page canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:2;display:block}.stf__wrapper{overflow:hidden!important;box-shadow:0 0 20px #00000080}.stf__block{overflow:hidden!important}.pfb-loader{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;z-index:9999;transition:opacity .5s}.pfb-spinner{font-size:40px;margin-bottom:15px;animation:pfb-spin 1s infinite linear;width:40px;height:40px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff}@keyframes pfb-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}