.product-item {
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-item:nth-child(1) { animation-delay: 0.05s; }
.product-item:nth-child(2) { animation-delay: 0.1s; }
.product-item:nth-child(3) { animation-delay: 0.15s; }
.product-item:nth-child(4) { animation-delay: 0.2s; }

.product-item.fade-out {
    animation: fadeOut 0.3s ease-out forwards;
}

.product-item.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; display: none; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.product-image {
    transition: transform 0.3s ease;
}

.product-item:hover .product-image {
    transform: scale(1.05);
}

.btn-inquiry {
    transition: all 0.3s ease;
}

.btn-inquiry:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
}

.filter-input {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.chevron {
    transition: transform 0.3s ease;
}

.chevron.rotated {
    transform: rotate(180deg);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}