:root{--primary-color:#10b981;--accent-color:#059669;--text-color:#1f2937;--border-color:#e5e7eb;--light-bg:#f9fafb}.book-card{border:1px solid var(--border-color);background-color:#fff;border-radius:8px;flex-direction:column;height:100%;transition:all .3s;display:flex;overflow:hidden}.book-card:hover{border-color:var(--primary-color);transform:translateY(-4px);box-shadow:0 10px 30px #0000001a}.book-card-link{color:inherit;flex-direction:column;height:100%;text-decoration:none;display:flex}.book-image-container{background-color:var(--light-bg);aspect-ratio:3/4;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.book-image{object-fit:cover;width:100%;height:100%;transition:transform .3s}.book-card:hover .book-image{transform:scale(1.05)}.discount-badge{color:#fff;background-color:#ef4444;border-radius:4px;padding:6px 10px;font-size:12px;font-weight:700;position:absolute;top:10px;right:10px;box-shadow:0 2px 8px #0003}.unavailable-overlay{color:#fff;text-align:center;background-color:#00000080;justify-content:center;align-items:center;padding:20px;font-size:14px;font-weight:600;display:flex;position:absolute;inset:0}.book-info{flex-direction:column;flex:1;padding:16px;display:flex}.book-title{color:var(--text-color);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 8px;font-size:14px;font-weight:600;line-height:1.4;display:-webkit-box;overflow:hidden}.book-author{color:#6b7280;-webkit-line-clamp:1;-webkit-box-orient:vertical;margin:0 0 12px;font-size:12px;display:-webkit-box;overflow:hidden}.book-price{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px;display:flex}.price,.discounted-price{color:var(--primary-color);font-size:16px;font-weight:700}.original-price{color:#6b7280;font-size:13px;font-weight:500;text-decoration:line-through}.book-tags{flex-wrap:wrap;flex:1;align-content:flex-start;gap:6px;margin-bottom:12px;display:flex}.tag{background-color:var(--light-bg);color:var(--text-color);border-radius:4px;padding:4px 8px;font-size:11px;font-weight:500;display:inline-block}.btn-add-to-cart{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:6px;width:100%;padding:10px;font-size:13px;font-weight:600;transition:background-color .2s}.btn-add-to-cart:hover:not(:disabled){background-color:var(--accent-color)}.btn-add-to-cart:disabled{cursor:not-allowed;opacity:.7;background-color:#d1d5db}@media (max-width:480px){.book-card{border-radius:6px}.book-info{padding:12px}.book-title{font-size:13px}.book-author{font-size:11px}.btn-add-to-cart{padding:8px;font-size:12px}}