/* ===== PAGINAÇÃO VIRTUAL - SISTEMA OTIMIZADO ===== */

/* Loading Indicator */
.pagination-loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    margin: 20px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 16px;
    border: 2px dashed #cbd5e1;
    transition: all 0.3s ease;
}

.pagination-loading-indicator.show {
    border-color: #3b82f6;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e5e7eb;
    border-top: 4px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 14px;
    font-weight: 600;
    color: #6b7280;
    text-align: center;
}

/* Grid Otimizado para Performance */
.motos-grid-virtual {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    padding: 0;
    margin: 0;
    contain: layout style paint;
    will-change: contents;
}

/* Placeholder para itens não carregados */
.card-placeholder {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 16px;
    height: 320px;
    position: relative;
    overflow: hidden;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.card-placeholder::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Controles de Paginação Modernos */
.pagination-controls-modern {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    margin-top: 32px;
    border-top: 2px solid #f3f4f6;
    background: linear-gradient(135deg, #fafbff 0%, #f8fafc 100%);
    border-radius: 16px;
    padding: 24px;
}

.pagination-info {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: #6b7280;
    font-weight: 500;
}

.pagination-info .info-badge {
    background: rgba(59, 130, 246, 0.1);
    color: #1d4ed8;
    padding: 4px 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 12px;
}

.pagination-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid #e5e7eb;
    background: #ffffff;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    color: #6b7280;
}

.pagination-btn:hover:not(:disabled) {
    border-color: #3b82f6;
    background: #eff6ff;
    color: #1d4ed8;
    transform: translateY(-2px);
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.pagination-btn.active {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-color: #1d4ed8;
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Seletor de Itens por Página */
.items-per-page-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #6b7280;
}

.items-per-page-select {
    padding: 8px 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    background: #ffffff;
    font-size: 14px;
    color: #374151;
    cursor: pointer;
    transition: all 0.2s ease;
}

.items-per-page-select:hover {
    border-color: #3b82f6;
}

.items-per-page-select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Toggle Infinite Scroll */
.infinite-scroll-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #6b7280;
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: #e5e7eb;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.toggle-switch.active {
    background: #3b82f6;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle-switch.active::after {
    transform: translateX(20px);
}

/* Indicador de Performance */
.performance-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 11px;
    font-family: monospace;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.performance-indicator.show {
    opacity: 1;
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top.show {
    transform: translateY(0);
    opacity: 1;
}

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

/* Otimizações de Performance */
.card-moto-modern {
    contain: layout style paint;
    will-change: transform;
}

/* Lazy Loading States */
.card-moto-modern.lazy-loading {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
}

.card-moto-modern.lazy-loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Intersection Observer Optimizations */
.card-moto-modern[data-visible="false"] {
    visibility: hidden;
}

.card-moto-modern[data-visible="true"] {
    visibility: visible;
}

/* Responsividade */
@media (max-width: 768px) {
    .motos-grid-virtual {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .pagination-controls-modern {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }
    
    .pagination-info {
        order: 2;
    }
    
    .pagination-buttons {
        order: 1;
    }
    
    .items-per-page-selector,
    .infinite-scroll-toggle {
        order: 3;
    }
    
    .scroll-to-top {
        bottom: 20px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
}

/* Animações de Entrada Escalonadas */
.card-moto-modern {
    animation: fadeInUp 0.6s ease backwards;
}

.card-moto-modern:nth-child(1) { animation-delay: 0.1s; }
.card-moto-modern:nth-child(2) { animation-delay: 0.15s; }
.card-moto-modern:nth-child(3) { animation-delay: 0.2s; }
.card-moto-modern:nth-child(4) { animation-delay: 0.25s; }
.card-moto-modern:nth-child(5) { animation-delay: 0.3s; }
.card-moto-modern:nth-child(6) { animation-delay: 0.35s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Estados de Erro */
.pagination-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    color: #6b7280;
}

.pagination-error-icon {
    font-size: 48px;
    color: #dc2626;
    margin-bottom: 16px;
}

.pagination-error-title {
    font-size: 18px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.pagination-error-message {
    font-size: 14px;
    margin-bottom: 20px;
}

.pagination-retry-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pagination-retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Reduzir animações para usuários com preferência */
@media (prefers-reduced-motion: reduce) {
    .card-moto-modern,
    .pagination-loading-indicator,
    .scroll-to-top {
        animation: none;
        transition: none;
    }
    
    .card-placeholder {
        animation: none;
        background: #f0f0f0;
    }
}