/**
 * Infinite Scroll Animations & Styles
 */

/* News Item Fade In Animation */
.news-item {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-item.loading {
    opacity: 0;
    transform: translateY(30px);
}

/* Loading Spinner Styles */
#loading-spinner {
    animation: fadeIn 0.3s ease;
}

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

.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* Load More Button */
#load-more-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

#load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

#load-more-btn:active {
    transform: translateY(0);
}

#load-more-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

#load-more-btn:hover::before {
    width: 300px;
    height: 300px;
}

/* All Loaded Message */
.all-loaded-message {
    animation: slideUp 0.5s ease;
}

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

.all-loaded-message .alert {
    border-radius: 50px;
    padding: 1rem 2rem;
    font-weight: 500;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Lazy Loading Images */
.lazy-img {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-img[src] {
    opacity: 1;
}

/* News Container Grid */
#news-container {
    min-height: 400px;
}

#news-container:empty::after {
    content: 'Haberler yükleniyor...';
    display: block;
    text-align: center;
    padding: 3rem;
    color: #999;
    font-style: italic;
}

/* Skeleton Loader */
.skeleton-loader {
    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;
    }
}

/* Scroll to Top Button (Bonus) */
#scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bs-primary, #007bff);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

#scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
    #scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    .spinner-border {
        width: 2.5rem;
        height: 2.5rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .skeleton-loader {
        background: linear-gradient(
            90deg,
            #2a2a2a 25%,
            #3a3a3a 50%,
            #2a2a2a 75%
        );
    }

    #news-container:empty::after {
        color: #666;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* News Item Hover Effect */
.news-item .post {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-item .post:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Image Hover Effect */
.news-item .post-media img {
    transition: transform 0.5s ease;
}

.news-item .post-media:hover img {
    transform: scale(1.05);
}

/* Progress Bar (Optional - shows scroll progress) */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, #007bff, #00d4ff);
    z-index: 9999;
    transition: width 0.1s ease;
}