.book-club-player{max-width:1200px;margin:0 auto}.back-to-books{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;margin-bottom:20px;background:#f8f9fa;border:none;border-radius:20px;color:#1a73e8;font-size:14px;font-weight:500;cursor:pointer;transition:all 0.2s ease}.back-to-books:hover{background:#e8f0fe;transform:translateY(-2px);box-shadow:0 2px 8px rgb(26 115 232 / .1)}.back-to-books .back-icon{width:20px;height:20px}.current-book{display:flex;flex-direction:column;align-items:center;text-align:center}.book-cover{margin:0 auto 24px;border-radius:12px;overflow:hidden;box-shadow:0 12px 24px rgb(0 0 0 / .15),0 4px 8px rgb(0 0 0 / .1);transition:transform 0.3s ease}.book-cover:hover{transform:translateY(-4px)}.book-cover img{width:100%;height:100%;object-fit:cover}.book-info{width:100%;max-width:800px;margin:0 auto}.book-title{font-size:32px;font-weight:600;color:#1a1a1a;margin:0 0 8px;padding:0;text-align:center}.book-author{font-size:18px;color:#666;margin:0;text-align:center}.player-container{background:#fff;border-radius:16px;padding:32px;box-shadow:0 8px 32px rgb(0 0 0 / .08)}.custom-player-ui{display:flex;flex-direction:column;gap:20px}.current-chapter{display:flex;align-items:center;color:#1a73e8;font-size:18px;font-weight:500;padding:8px 16px;background:#e8f0fe;border-radius:24px;width:100%}.current-chapter .chapter-icon{flex:0 0 auto;margin-right:12px;color:#1a73e8}.current-chapter .marquee{flex:1;overflow:hidden;position:relative}.current-chapter .marquee .scroll-text{display:inline-block;white-space:nowrap;animation:scroll 20s linear infinite}@keyframes scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}.current-chapter .marquee:hover .scroll-text{animation-play-state:paused}.messages-container{position:fixed;bottom:20px;right:20px;z-index:1000}.message{padding:12px 20px;border-radius:6px;color:#fff;margin-bottom:10px;animation:slideIn 0.3s ease-out}.message.success{background:#34A853}.message.error{background:#EA4335}.message.info{background:#4285F4}.message.fade-out{animation:fadeOut 0.3s ease-out forwards}@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}@keyframes fadeOut{from{transform:translateX(0);opacity:1}to{transform:translateX(100%);opacity:0}}@media screen and (max-width:768px){.player-container{padding:16px}.book-title{font-size:24px}.book-author{font-size:16px}.current-chapter{font-size:16px;padding:6px 12px}.messages-container{left:20px;right:20px}}