.flipbook-main-container{gap:1.5rem;padding:2rem;background:linear-gradient(135deg,#f1f5f9,#e2e8f0);border-radius:12px;width:100%;max-width:100%;margin:0 auto;min-height:auto}.flipbook-audio,.flipbook-main-container{display:flex;flex-direction:column;align-items:center}.flipbook-audio{gap:.5rem}.audio-btn{display:flex;align-items:center;gap:.75rem;padding:10px 28px;background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;border:2px solid #4ade80;border-radius:50px;font-size:14px;font-weight:700;cursor:pointer;transition:all .3s}.audio-btn:disabled{opacity:.4;cursor:not-allowed;border-color:#94a3b8}.audio-btn:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(30,41,59,.3);border-color:#22c55e}.audio-btn.playing{background:linear-gradient(135deg,#ff6b6b,#e85555);border-color:#ff8787;animation:pulse 2s infinite}@keyframes pulse{0%,to{box-shadow:0 4px 12px hsla(0,100%,71%,.4)}50%{box-shadow:0 6px 20px hsla(0,100%,71%,.6)}}.audio-btn .icon{font-size:16px}.audio-btn .label{font-size:13px;letter-spacing:.5px}.read-hint{font-size:12px;color:#64748b;font-style:italic}.flipbook-stage{display:flex;justify-content:center;align-items:center;width:100%;max-width:900px}.flipbook{box-shadow:0 10px 40px rgba(30,41,59,.3);border-radius:4px}.page{background:#fff;position:relative;overflow:hidden;height:600px}.blank-page{background:#f8fafc}.cover-page{background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2.5rem;position:relative}.cover-page .cover-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}.cover-page .cover-title-overlay{position:absolute;bottom:0;left:0;right:0;padding:1.5rem 2rem;background:linear-gradient(0deg,rgba(0,0,0,.85),transparent);color:#fff;text-align:center;z-index:1}.cover-page .cover-title-overlay h1{font-size:12px;font-weight:700;margin:0 0 .5rem}.cover-page .cover-title-overlay p{font-size:13px;color:hsla(0,0%,100%,.9);font-weight:600;margin:0}.cover-page h1{font-size:31px;font-weight:700;margin-bottom:1rem}.cover-page p{font-size:15px;color:#ff6b6b;font-weight:600}.image-page{padding:0;display:flex;align-items:center;justify-content:center;background:#fff}.image-page img{width:100%;height:100%;object-fit:contain}.text-page{padding:2.5rem 2rem;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:#fff;height:600px}.text-page h2{font-size:12px;font-weight:700;color:#1e293b;margin:0 0 .5rem;max-width:85%;line-height:1.35}.text-page .divider{width:50px;height:3px;background:linear-gradient(90deg,#ff6b6b,#4ade80);margin:.75rem 0 1rem}.text-page p{font-size:14px;line-height:1.65;color:#334155;margin:0;max-width:90%;white-space:pre-line}.page-num{position:absolute;font-size:11px;font-weight:600;padding:4px 10px;border-radius:10px}.image-page .page-num{bottom:8px;left:8px;background:#1e293b;color:#fff}.text-page .page-num{top:8px;right:8px;background:#f1f5f9;color:#1e293b}.end-page{background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:3rem}.end-page h2{font-size:37px;font-weight:700;margin-bottom:1.5rem;color:#4ade80}.continue-btn{padding:11px 28px;background:#ff6b6b;color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:700;cursor:pointer;transition:all .3s}.continue-btn:hover{background:#e85555;transform:scale(1.05)}.flipbook-nav{display:flex;gap:1.25rem;align-items:center;flex-wrap:wrap;justify-content:center}.flipbook-nav button{padding:9px 22px;background:#1e293b;color:#fff;border:none;border-radius:7px;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s}.flipbook-nav button:hover:not(:disabled){background:#0f172a}.flipbook-nav button:disabled{background:#cbd5e1;cursor:not-allowed;opacity:.5}.page-info{font-size:12px;color:#1e293b;font-weight:600;background:#fff;padding:7px 14px;border-radius:14px;border:2px solid #4ade80}.expand-btn{background:transparent!important;color:#1e293b!important;border:2px solid #1e293b!important}.expand-btn:hover{background:#1e293b!important;color:#fff!important}.expanded-close{position:fixed;top:1.5rem;right:1.5rem;width:44px;height:44px;background:#fff;color:#1e293b;border:none;border-radius:50%;font-size:24px;font-weight:700;cursor:pointer;z-index:10002;transition:all .2s;box-shadow:0 4px 12px rgba(0,0,0,.3);display:flex;align-items:center;justify-content:center}.expanded-close:hover{background:#ff6b6b;color:#fff;transform:scale(1.1)}.flipbook-main-container.expanded{position:fixed;top:0;left:0;right:0;bottom:0;max-width:100vw;padding:2rem;z-index:10001;background:linear-gradient(135deg,#0f172a,#1e293b);border-radius:0;margin:0}.flipbook-main-container.expanded .flipbook-audio{margin-bottom:1rem}.flipbook-main-container.expanded .flipbook-stage{max-width:100%;height:auto}.flipbook-main-container.expanded .flipbook-nav{margin-top:2rem}.flipbook-main-container.expanded .audio-btn,.flipbook-main-container.expanded .flipbook-nav button{font-size:15px;padding:12px 32px}.flipbook-main-container.expanded .page-info{font-size:14px;padding:10px 20px}.flipbook-hint{font-size:11px;color:#334155;font-style:italic;margin:0}@media (max-width:1024px){.flipbook{transform:scale(.85)}}@media (max-width:768px){.flipbook-main-container{padding:1rem}.flipbook{transform:scale(.7)}.flipbook-nav{gap:1rem}}