/* Performance Optimizations */

/* Load more button styling */
.load-more-btn {
    display: block;
    margin: 2rem auto;
    padding: 12px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    min-width: 200px;
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

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

.load-more-btn i {
    margin-right: 8px;
}

/* Video placeholder for lazy loading */
.video-placeholder {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-placeholder:hover {
    border-color: #667eea;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    transform: translateY(-2px);
}

.video-placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: #64748b;
}

.video-placeholder-content i {
    font-size: 3rem;
    color: #667eea;
}

.video-placeholder-content span {
    font-size: 1rem;
    font-weight: 500;
}

/* Lazy loading image optimization */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Performance improvements for tool cards */
.tool-card {
    /* Remove containment and will-change to prevent stacking context issues */
    /* contain: style; - Commented out as it creates stacking context */
    /* will-change: transform; - Commented out as it creates stacking context */
}

.tool-card:hover {
    transform: translateY(-4px);
    will-change: auto;
}

/* Optimize tool grid rendering */
.tools-grid {
    /* contain: layout style; - Commented out as it creates stacking context that interferes with dropdowns */
}

/* Reduce repaints on scroll */
.category-section {
    /* contain: layout style; - Commented out as it creates stacking context that interferes with dropdowns */
}

/* Optimize icon rendering */
.tool-icon img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Skeleton loading for tool cards */
.tool-card.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, transparent 37%, #f0f0f0 63%);
    background-size: 400% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 100% 50%;
    }
    100% {
        background-position: -100% 50%;
    }
}

/* Optimize dropdown animations */
.tool-dropdown {
    will-change: max-height, opacity;
}

.tool-card.dropdown-open .tool-dropdown {
    will-change: auto;
}

/* Performance-focused media queries */
@media (max-width: 768px) {
    .load-more-btn {
        width: 90%;
        max-width: 300px;
    }
    
    .video-placeholder {
        min-height: 150px;
        padding: 1.5rem;
    }
    
    .video-placeholder-content i {
        font-size: 2rem;
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .load-more-btn,
    .video-placeholder,
    .tool-card,
    img[loading="lazy"] {
        transition: none;
    }
    
    .tool-card.loading {
        animation: none;
        background: #f0f0f0;
    }
}

/* Critical rendering path optimization */
.above-fold {
    /* contain: strict; - Commented out as it creates stacking context that interferes with dropdowns */
}

.below-fold {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

/* Font optimization: Inter is loaded via <link> from Google Fonts in HTML. */