.book-card{transition:all 0.3s cubic-bezier(0.25,0.8,0.25,1)}.book-cover-wrapper{position:relative;border-radius:6px;box-shadow:0 8px 16px rgba(0,0,0,0.25);transition:transform 0.4s ease,box-shadow 0.4s ease;overflow:hidden;aspect-ratio:3/4;background:#1a1a2e}.book-cover-img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}.book-cover-fallback{width:100%;height:100%;display:flex;flex-direction:column;justify-content:space-between;padding:1.5rem 1rem 1rem 1.5rem;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,0.6);position:relative}.book-card:hover .book-cover-wrapper{transform:translateY(-5px);box-shadow:0 12px 24px rgba(139,92,246,0.3)}.book-card:hover .book-cover-img{transform:scale(1.05)}.premium-badge{font-size:0.7rem;font-weight:700;letter-spacing:0.5px;padding:5px 10px;border-radius:6px;backdrop-filter:blur(8px);box-shadow:0 4px 10px rgba(0,0,0,0.2)}.bg-grad-1{background:linear-gradient(135deg,#2b5876 0%,#4e4376 100%)}.bg-grad-2{background:linear-gradient(135deg,#1e3c72 0%,#2a5298 100%)}.bg-grad-3{background:linear-gradient(135deg,#30cfd0 0%,#330867 100%)}.bg-grad-4{background:linear-gradient(135deg,#cc208e 0%,#6713d2 100%)}.bg-grad-5{background:linear-gradient(135deg,#f857a6 0%,#ff5858 100%)}.category-check-label{background:var(--card-bg,rgba(255,255,255,0.05));border:1px solid var(--glass-border,rgba(255,255,255,0.1));color:var(--text-main);padding:6px 12px;border-radius:8px;cursor:pointer;transition:all 0.2s ease;user-select:none;font-size:0.85rem}.category-check-input:checked + .category-check-label{background:linear-gradient(135deg,#8b5cf6 0%,#6366f1 100%);border-color:transparent;color:#fff;box-shadow:0 4px 10px rgba(139,92,246,0.25)}.pagination-wrapper nav .d-none.d-md-block{display:none !important}.pagination-wrapper nav{justify-content:center !important}.pagination-custom .page-link{background:var(--card-bg,rgba(255,255,255,0.05)) !important;border:1px solid var(--glass-border,rgba(255,255,255,0.1)) !important;color:var(--text-main,#f7fafc) !important;padding:0.5rem 1rem;border-radius:8px !important;transition:all 0.25s ease;font-weight:600;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-width:40px}.pagination-custom .page-link:hover{background:linear-gradient(135deg,#8b5cf6 0%,#6366f1 100%) !important;border-color:transparent !important;color:#fff !important;transform:translateY(-2px);box-shadow:0 4px 12px rgba(139,92,246,0.35)}.pagination-custom .page-item.disabled .page-link{background:rgba(128,128,128,0.05) !important;border-color:var(--glass-border,rgba(255,255,255,0.05)) !important;color:var(--text-muted,rgba(255,255,255,0.3)) !important;opacity:0.45;cursor:not-allowed;transform:none !important;box-shadow:none !important}.pagination-custom .active-info span{border-radius:8px;background:linear-gradient(135deg,#8b5cf6 0%,#6366f1 100%) !important;box-shadow:0 4px 12px rgba(139,92,246,0.3);border:none}.category-collapse-container{position:relative;display:flex;flex-direction:column;align-items:center}.category-collapse-wrapper{max-height:42px;overflow:hidden;transition:max-height 0.35s cubic-bezier(0.4,0,0.2,1);position:relative;width:100%}.category-collapse-wrapper.expanded{max-height:1000px}.category-collapse-wrapper .d-flex{padding-bottom:8px}.category-collapse-wrapper::after{display:none !important}.btn-toggle-categories{background:transparent;border:none;color:#a855f7;font-size:0.9rem;font-weight:500;padding:12px 18px 0 18px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:all 0.25s ease;outline:none;z-index:10;box-shadow:none;margin-top:8px}.btn-toggle-categories:hover{background:transparent;color:#c084fc;box-shadow:none}.btn-toggle-categories i{transition:transform 0.3s ease}.btn-toggle-categories.active i{transform:rotate(180deg)}.form-select option{background-color:var(--dropdown-bg,#14141e);color:var(--text-main,#f7fafc)}