.book-reader-page{min-height:100vh;background:var(--background-color);padding:15px;margin-top:80px}.book-header{background:var(--surface-color);border-radius:12px;padding:20px;margin-bottom:20px;border:1px solid var(--border-color);box-shadow:0 4px 12px #0000001a}.book-header-content{display:flex;align-items:center;gap:20px}.book-cover-img{width:100px;height:140px;border-radius:8px;overflow:hidden;flex-shrink:0}.book-cover-img img{width:100%;height:100%;object-fit:cover}.book-details{flex:1}.book-title{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:5px}.book-subtitle{font-size:1rem;color:var(--text-secondary);margin-bottom:15px}.book-actions{display:flex;gap:10px;margin-top:15px;flex-wrap:wrap}.action-btn{padding:8px 16px;border-radius:6px;border:1px solid var(--border-color);background:var(--surface-color);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;gap:6px;font-family:'Cairo',sans-serif;font-size:.9rem;transition:all .2s ease}.action-btn:hover{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.action-btn.download-btn{background:var(--success-color);color:#fff;border-color:var(--success-color)}.action-btn.view-btn{background:var(--warning-color);color:#fff;border-color:var(--warning-color)}.reader-container{background:var(--surface-color);border-radius:12px;overflow:hidden;min-height:70vh;border:1px solid var(--border-color);position:relative}.pdf-viewer-iframe{width:100%;height:70vh;border:none;background:#fff}.image-viewer{width:100%;max-width:800px;margin:0 auto;padding:20px;text-align:center}.image-viewer img{max-width:100%;max-height:70vh;border-radius:8px;box-shadow:0 4px 16px #0003}.reader-message{padding:60px 20px;text-align:center}.reader-message i{font-size:3rem;margin-bottom:20px}.reader-message.info i{color:var(--primary-color)}.reader-message.error i{color:var(--danger-color)}.reader-message h3{font-size:1.3rem;color:var(--text-primary);margin-bottom:10px}.reader-message p{color:var(--text-secondary);margin-bottom:20px;max-width:600px;margin-left:auto;margin-right:auto}.view-options{display:flex;gap:10px;margin-bottom:20px;justify-content:center}.view-option-btn{padding:8px 20px;border-radius:6px;background:var(--surface-color);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;transition:all .2s ease}.view-option-btn.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.reader-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:400px}.loading-spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:15px}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.book-reader-page{padding:10px}.book-header-content{flex-direction:column;text-align:center;gap:15px}.book-cover-img{width:80px;height:120px}.book-actions{justify-content:center}.pdf-viewer-iframe{height:60vh}}.book-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}.action-btn{padding:10px 20px;border-radius:8px;border:2px solid var(--accent-color);background:var(--card-bg);color:var(--accent-color);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:'Cairo',sans-serif;font-size:.9rem;font-weight:500;transition:all .2s ease;min-width:140px}.action-btn:hover{background:var(--accent-color);color:#fff;transform:translateY(-1px);box-shadow:0 4px 12px var(--shadow-color)}.action-btn:first-child{border-color:var(--text-secondary);color:var(--text-color)}.action-btn:first-child:hover{background:var(--text-secondary);border-color:var(--text-secondary);color:#fff}.action-btn.download-btn{background:var(--accent-color);color:#fff;border-color:var(--accent-color)}.action-btn.download-btn:hover{background:transparent;color:var(--accent-color)}.action-btn.view-btn{background:transparent;color:var(--accent-color);border-color:var(--accent-color)}.action-btn.view-btn:hover{background:var(--accent-color);color:#fff}.action-btn i{font-size:.9rem;transition:transform .2s ease}.action-btn:hover i{transform:translateX(2px)}@media (max-width: 768px){.book-actions{gap:8px}.action-btn{padding:8px 16px;font-size:.85rem;min-width:120px;flex:1}}