/**
 * Search Performance CSS
 * Optimized styles for enhanced search functionality and loading states
 */

/* Search Loading States */
.search-loader {
    display: none;
    text-align: center;
    padding: 20px;
}

.search-loader.loading {
    display: block;
}

.search-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

/* Search Results Performance Improvements */
.search-results {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.search-results.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Program Cards with Performance Optimizations */
.program-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    will-change: transform;
}

.program-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Image Loading States */
img[data-src] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img.loaded {
    opacity: 1;
}

/* Search Input Enhancements */
.search-input-enhanced {
    position: relative;
}

.search-input-enhanced::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23999"><path d="M15.5 14h-.79l-.28-.27A6.471 6.471 0 0 0 16 9.5 6.5 6.5 0 1 0 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z"/></svg>') no-repeat center;
    opacity: 0.5;
}

/* Search Suggestions */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 4px 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    max-height: 200px;
    overflow-y: auto;
}

.search-suggestion {
    padding: 10px 15px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
    transition: background-color 0.2s ease;
}

.search-suggestion:hover {
    background-color: #f8f9fa;
}

.search-suggestion:last-child {
    border-bottom: none;
}

/* Results Count Display */
.results-count {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
    font-weight: 500;
}

/* Empty State */
.empty-search-results {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.empty-search-results i {
    font-size: 3rem;
    color: #ddd;
    margin-bottom: 20px;
}

/* Performance Monitoring (for debugging) */
.performance-debug {
    position: fixed;
    top: 70px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px;
    border-radius: 4px;
    font-size: 12px;
    z-index: 2000;
    display: none;
}

.performance-debug.show {
    display: block;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .search-results {
        padding: 10px;
    }
    
    .program-card {
        margin-bottom: 15px;
    }
    
    .search-suggestions {
        font-size: 14px;
    }
}

/* Accessibility Improvements */
.search-input:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

.search-suggestion[aria-selected="true"] {
    background-color: #007bff;
    color: white;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .search-suggestions {
        background: #333;
        border-color: #555;
        color: white;
    }
    
    .search-suggestion {
        border-color: #555;
    }
    
    .search-suggestion:hover {
        background-color: #444;
    }
}

/* Animation Optimizations */
@media (prefers-reduced-motion: reduce) {
    .search-results,
    .program-card,
    img[data-src] {
        transition: none;
    }
    
    .search-spinner {
        animation: none;
    }
}