/* Lazy Loading Styles for Ideas Gallery */

/* Image Placeholder Styles */
.image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 12px;
    color: #666;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 10px;
    opacity: 0.7;
}

.placeholder-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: #888;
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Pin Container Improvements */
.pin {
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.pin.loaded {
    opacity: 1;
    transform: translateY(0);
}

.pin-image-container {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.pin-image-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.lazy-image {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.3s ease;
}

.lazy-image[src=""] {
    opacity: 0;
}

/* Pin Overlay Improvements */
.pin-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.8) 0%,
        rgba(0, 0, 0, 0.4) 50%,
        transparent 100%
    );
    color: white;
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.pin-image-container:hover .pin-overlay {
    transform: translateY(0);
}

.pin-overlay h3 {
    margin: 0 0 8px 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.pin-overlay p {
    margin: 0 0 12px 0;
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.4;
}

.pin-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.pin-tags .tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Loading Indicator for Infinite Scroll */
.loading-indicator {
    display: none;
    text-align: center;
    padding: 40px 20px;
    grid-column: 1 / -1;
    color: #666;
}

.loading-indicator .loading-spinner {
    margin: 0 auto 15px auto;
}

.loading-indicator p {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
}

/* Results Counter */
.results-counter {
    background: #007bff;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-block;
    margin-top: 15px;
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.3);
}

/* Load More Trigger (Hidden) */
.load-more-trigger {
    grid-column: 1 / -1;
    height: 20px;
    background: transparent;
}

/* Error State */
.image-placeholder.error {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    color: #c62828;
}

.image-placeholder.error .placeholder-icon {
    color: #e53935;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .image-placeholder {
        min-height: 150px;
    }
    
    .placeholder-icon {
        font-size: 2rem;
    }
    
    .placeholder-text {
        font-size: 0.8rem;
    }
    
    .loading-spinner {
        width: 30px;
        height: 30px;
        border-width: 3px;
    }
    
    .pin-overlay {
        padding: 15px;
    }
    
    .pin-overlay h3 {
        font-size: 1rem;
    }
    
    .pin-overlay p {
        font-size: 0.8rem;
    }
    
    .pin-tags .tag {
        font-size: 0.7rem;
        padding: 3px 6px;
    }
}

/* High Performance Optimizations */
.pin-image-container {
    contain: layout style paint;
    will-change: transform;
}

.lazy-image {
    contain: layout style paint;
}

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

/* Focus States for Accessibility */
.pin:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

.pin:focus .pin-image-container {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.3);
}

/* Animation for New Images */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pin.newly-added {
    animation: fadeInUp 0.6s ease-out;
}

/* Skeleton Loading Animation */
.skeleton {
    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;
    }
}

/* Performance Hints */
.masonry {
    contain: layout style paint;
}

.pin-image-container img {
    image-rendering: auto;
    image-rendering: crisp-edges;
    image-rendering: -webkit-optimize-contrast;
}