/* References Section */
#reference {
    position: relative;
    overflow: hidden;
    padding: 4rem 0;
    background-color: #f8f9fa;
}

.reference-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: 1rem 0 2rem;
}

.reference-track {
    display: flex;
    transition: transform 0.3s ease-out;
    will-change: transform;
    gap: 1.5rem;
    padding: 0 1rem;
}

.reference-item {
    flex: 0 0 calc(50% - 1rem);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    padding: 0.5rem;
    max-width: 50%;
    box-sizing: border-box;
}

.reference-item .card {
    height: 100%;
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.reference-item .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.reference-item .card-body {
    padding: 1.5rem;
}

.reference-logo {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.reference-meta {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.85rem;
}

/* Navigation Buttons */
.reference-prev,
.reference-next {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.3s ease;
    border: 1px solid #dee2e6;
    background-color: white;
    color: #6c757d;
}

.reference-prev:hover,
.reference-next:hover {
    background-color: #f8f9fa;
    color: #0d6efd;
    border-color: #0d6efd;
}

.reference-prev[disabled],
.reference-next[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #f8f9fa;
    border-color: #dee2e6;
    color: #6c757d;
}

/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .reference-track {
        gap: 1rem;
    }
    
    .reference-item {
        flex: 0 0 calc(50% - 0.5rem);
        max-width: 50%;
    }
    
    .reference-item .card-body {
        padding: 1.25rem;
    }
}

/* Ensure cards take full width of their container */
.reference-item .card {
    width: 100%;
    margin: 0;
}

@media (max-width: 767.98px) {
    #reference {
        padding: 3rem 0;
    }
    
    .reference-track {
        gap: 0.75rem;
        padding: 0 0.5rem;
    }
    
    .reference-item {
        padding: 0.25rem;
    }
    
    .reference-item .card-body {
        padding: 1rem;
    }
    
    .reference-logo {
        width: 40px !important;
        height: 40px !important;
        font-size: 1.25rem;
    }
    
    .reference-meta {
        font-size: 0.8rem;
    }
}

/* Hide scrollbar but keep functionality */
.reference-container::-webkit-scrollbar {
    display: none;
}

.reference-container {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Animation for reference items */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reference-item {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

/* Stagger animations */
.reference-item:nth-child(1) { animation-delay: 0.1s; }
.reference-item:nth-child(2) { animation-delay: 0.2s; }
.reference-item:nth-child(3) { animation-delay: 0.3s; }
.reference-item:nth-child(4) { animation-delay: 0.4s; }
.reference-item:nth-child(5) { animation-delay: 0.5s; }
.reference-item:nth-child(6) { animation-delay: 0.6s; }
.reference-item:nth-child(7) { animation-delay: 0.7s; }
.reference-item:nth-child(8) { animation-delay: 0.8s; }
.reference-item:nth-child(9) { animation-delay: 0.9s; }
.reference-item:nth-child(10) { animation-delay: 1.0s; }
.reference-item:nth-child(11) { animation-delay: 1.1s; }
.reference-item:nth-child(12) { animation-delay: 1.2s; }