/* Modern Responsive Image Slider Styles */

.college-slider {
    position: relative;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    --slider-height: 400px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.slider-container {
    position: relative;
    width: 100%;
    height: var(--slider-height);
    overflow: hidden;
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    z-index: 1;
}

/* Ensure first slide is visible initially */
.slider-wrapper .slide:first-child {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.slide.active {
    opacity: 1;
    z-index: 2;
    visibility: visible;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    position: relative;
    z-index: 1;
}

/* Navigation arrows */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #333;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.slider-nav:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.slider-nav:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.slider-prev {
    left: 20px;
}

.slider-next {
    right: 20px;
}

/* Pagination dots */
.slider-pagination {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.slider-dot:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.slider-dot.active {
    background: #fff;
    transform: scale(1.3);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Transition effects */
.college-slider[data-transition="fade"] .slide {
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

.college-slider[data-transition="slide"] .slider-wrapper {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.college-slider[data-transition="slide"] .slide {
    position: relative;
    min-width: 100%;
    opacity: 1;
    visibility: visible;
    transition: none;
}

/* Responsive design */
@media (max-width: 767px) {
    .college-slider {
        border-radius: 0;
        margin: 0 -15px;
    }

    .slider-nav {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .slider-prev {
        left: 10px;
    }

    .slider-next {
        right: 10px;
    }

    .slider-pagination {
        bottom: 15px;
    }

    .slider-dot {
        width: 10px;
        height: 10px;
    }
}

@media (min-width: 768px) {
    .college-slider {
        --slider-height: 500px;
    }
}

@media (min-width: 1024px) {
    .college-slider {
        --slider-height: 600px;
    }

    .slider-nav {
        width: 60px;
        height: 60px;
        font-size: 20px;
    }

    .slider-prev {
        left: 30px;
    }

    .slider-next {
        right: 30px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .slide,
    .slider-wrapper,
    .slider-nav,
    .slider-dot {
        transition: none;
    }

    .college-slider[data-transition="slide"] .slider-wrapper {
        transition: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .slider-nav {
        background: #000;
        color: #fff;
        border: 2px solid #fff;
    }

    .slider-dot {
        background: #000;
        border: 1px solid #fff;
    }

    .slider-dot.active {
        background: #fff;
        border-color: #000;
    }
}

/* Loading state - subtle loading indicator */
.slide img[loading="lazy"] {
    background: linear-gradient(90deg, rgba(255,255,255,0.8) 25%, rgba(240,240,240,0.8) 50%, rgba(255,255,255,0.8) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

/* Remove loading animation once image is loaded */
.slide img:not([loading="lazy"]) {
    background: none;
    animation: none;
}

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

/* Accessibility improvements */
.slider-live-region {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}