/* References Carousel Styles */

/* Main references section styling */
#references {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

#references::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23000" opacity="0.02"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

/* References carousel container */
.references-carousel {
    position: relative;
    z-index: 2;
}

/* Reference item container */
.reference-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 2px solid transparent;
    height: 120px;
    position: relative;
    overflow: hidden;
}

.reference-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    transition: left 0.6s ease;
}

.reference-item:hover::before {
    left: 100%;
}

.reference-item:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 12px 25px rgba(30, 77, 114, 0.15);
    border-color: #1e4d72;
}

/* Reference logo styling */
.reference-logo {
    max-width: 100%;
    max-height: 80px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%) opacity(0.7);
    transition: all 0.4s ease;
    z-index: 1;
    position: relative;
}

.reference-item:hover .reference-logo {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.1);
}

/* Owl Carousel specific overrides for references */
.references-carousel.owl-carousel {
    background: transparent;
    margin-bottom: 0;
}

.references-carousel .owl-stage-outer {
    padding: 10px 0;
    overflow: visible;
}

.references-carousel .owl-item {
    opacity: 0.6;
    transition: opacity 0.4s ease;
}

.references-carousel .owl-item.active {
    opacity: 1;
}

/* Center active items effect */
.references-carousel .owl-item.center {
    opacity: 1;
    transform: scale(1.1);
}

/* Loading animation */
.reference-item.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* Responsive adjustments */
@media (max-width: 1199px) {
    .reference-item {
        height: 100px;
        padding: 15px;
    }
    
    .reference-logo {
        max-height: 70px;
    }
}

@media (max-width: 991px) {
    .reference-item {
        height: 90px;
        padding: 12px;
    }
    
    .reference-logo {
        max-height: 60px;
    }
}

@media (max-width: 767px) {
    #references {
        padding: 40px 0;
    }
    
    .reference-item {
        height: 80px;
        padding: 10px;
        border-radius: 8px;
    }
    
    .reference-logo {
        max-height: 50px;
    }
}

@media (max-width: 575px) {
    .reference-item {
        height: 70px;
        padding: 8px;
    }
    
    .reference-logo {
        max-height: 45px;
    }
}

/* Performance optimizations */
.references-carousel * {
    will-change: transform;
}

.reference-item {
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Accessibility improvements */
.reference-item:focus {
    outline: 2px solid #1e4d72;
    outline-offset: 2px;
}

/* Smooth carousel movement */
.references-carousel .owl-stage {
    transform-style: preserve-3d;
}

/* Custom section title styling */
#references h2 {
    color: #1e4d72;
    margin-bottom: 15px;
    position: relative;
}

#references h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, #1e4d72, #2980b9);
    border-radius: 2px;
}

#references p {
    color: #666;
    margin-bottom: 40px;
}

/* Animation for when section comes into view */
.references-carousel.appear-animation {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.references-carousel.appear-animation.appear-animation-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hover effects for touch devices */
@media (hover: none) {
    .reference-item:hover {
        transform: none;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        border-color: transparent;
    }
    
    .reference-item:hover .reference-logo {
        filter: grayscale(0%) opacity(1);
        transform: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .reference-item {
        border: 2px solid #000;
    }
    
    .reference-logo {
        filter: none;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .reference-item,
    .reference-logo,
    .references-carousel * {
        transition: none !important;
        animation: none !important;
    }
}