/**
 * Travel Widget Pro Frontend Compatibility CSS - Performance Optimized
 * 
 * IMPORTANT: Preserves all GetYourGuide functionality while adding performance optimizations
 * 
 * Features:
 * - Hardware-accelerated widget rendering
 * - Optimized iframe performance
 * - Memory-efficient animations
 * - Reduced layout thrashing
 * - GPU-accelerated transformations
 * - Intelligent loading strategies
 * 
 * Performance targets:
 * - <5ms widget render time
 * - GPU-accelerated animations
 * - Minimal reflows/repaints
 * - Optimized for 5000+ pages
 * 
 * @version 3.0.0-performance
 */

/* Performance base - enable hardware acceleration globally for widgets */
.twp-adw-widget {
    /* Core layout optimization */
    clear: both;
    margin: 20px 0;
    padding: 0;
    
    /* Performance optimizations */
    contain: layout style paint;
    transform: translateZ(0);
    backface-visibility: hidden;
    
    /* Prevent layout shifts */
    box-sizing: border-box;
    max-width: 100%;
    overflow: hidden;
    
    /* Memory efficient positioning */
    position: relative;
    word-wrap: break-word;
    
    /* Optimize for frequent updates */
    will-change: auto;
}

/* Optimize all child elements */
.twp-adw-widget * {
    box-sizing: border-box;
    max-width: 100%;
    
    /* Prevent inheritance performance issues */
    backface-visibility: inherit;
}

/* CRITICAL: GetYourGuide widget optimizations - PRESERVE ALL FUNCTIONALITY */
.twp-adw-getyourguide {
    /* Core functionality preserved */
    min-height: 450px;
    background-color: #fff;
    border-radius: 4px;
    
    /* Performance enhancements */
    contain: layout style paint;
    transform: translateZ(0);
    
    /* Optimize for GYG scripts */
    position: relative;
    z-index: 1;
    
    /* Memory optimization */
    will-change: contents;
}

.twp-adw-getyourguide iframe {
    /* PRESERVE: Core GYG functionality */
    display: block !important;
    width: 100% !important;
    min-height: 450px !important;
    border: none !important;
    overflow: hidden;
    border-radius: 4px;
    background-color: #f9f9f9;
    
    /* PERFORMANCE: Hardware acceleration without breaking functionality */
    transform: translateZ(0);
    backface-visibility: hidden;
    
    /* Optimize iframe rendering */
    contain: layout;
    will-change: auto;
}

/* PRESERVE: GYG protection system with performance optimization */
.twp-adw-getyourguide[data-twp-protected="true"] {
    /* Visual indicator with GPU acceleration */
    border: 1px solid rgba(0, 163, 42, 0.2);
    background: linear-gradient(135deg, #ffffff 0%, #f8fffa 100%);
    
    /* Performance optimization */
    transform: translateZ(0);
    will-change: auto;
}

/* PRESERVE: GYG safety container with performance optimizations */
.gyg-safety-container {
    /* Core functionality preserved */
    width: 100% !important;
    min-height: 450px !important;
    border: 1px solid #f0f0f0 !important;
    border-radius: 4px !important;
    background-color: #fff !important;
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    
    /* Performance optimizations */
    z-index: 10;
    pointer-events: auto;
    contain: layout style paint;
    transform: translateZ(0);
}

.gyg-safety-container > div {
    /* Core styling preserved */
    text-align: center !important;
    padding: 20px !important;
    background-color: #f9f9f9 !important;
    border-radius: 4px !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1) !important;
    
    /* Performance optimization */
    contain: layout style;
    transform: translateZ(0);
}

/* PRESERVE: Optimized spinner animation with hardware acceleration */
@keyframes twp-spin-optimized {
    0% { 
        transform: translateZ(0) rotate(0deg); 
    }
    100% { 
        transform: translateZ(0) rotate(360deg); 
    }
}

.gyg-safety-container .twp-loading-spinner,
.twp-adw-widget-loading::before {
    width: 40px !important;
    height: 40px !important;
    border: 4px solid #f3f3f3 !important;
    border-top: 4px solid #f43e55 !important;
    border-radius: 50% !important;
    margin: 0 auto 15px !important;
    
    /* GPU-accelerated animation */
    animation: twp-spin-optimized 1s linear infinite !important;
    will-change: transform;
    transform: translateZ(0);
    
    /* Performance optimization */
    contain: layout style paint;
}

/* Viator widget optimizations */
.twp-adw-viator {
    overflow: hidden;
    border-radius: 4px;
    background-color: #fff;
    
    /* Performance enhancements */
    contain: layout style paint;
    transform: translateZ(0);
}

.twp-adw-viator iframe {
    width: 100% !important;
    min-height: 500px !important;
    border: none !important;
    overflow: hidden;
    border-radius: 4px;
    background-color: #f9f9f9;
    
    /* Performance optimizations */
    transform: translateZ(0);
    contain: layout;
    will-change: auto;
}

/* Booking widget optimizations */
.twp-adw-booking {
    overflow: hidden;
    border-radius: 4px;
    background-color: #fff;
    position: relative;
    
    /* Performance enhancements */
    contain: layout style paint;
    transform: translateZ(0);
}

.twp-adw-booking iframe {
    width: 100% !important;
    min-height: 400px !important;
    border: none !important;
    overflow: hidden;
    border-radius: 4px;
    background-color: #f9f9f9;
    
    /* Performance optimizations */
    transform: translateZ(0);
    contain: layout;
    will-change: auto;
}

/* Civitatis widget optimizations */
.twp-adw-civitatis {
    overflow: hidden;
    border-radius: 4px;
    background-color: #fff;
    
    /* Performance enhancements */
    contain: layout style paint;
    transform: translateZ(0);
}

.twp-adw-civitatis iframe {
    width: 100% !important;
    min-height: 450px !important;
    border: none !important;
    overflow: hidden;
    border-radius: 4px;
    background-color: #f9f9f9;
    
    /* Performance optimizations */
    transform: translateZ(0);
    contain: layout;
    will-change: auto;
}

/* Custom widgets with enhanced security and performance */
.twp-adw-custom {
    overflow: hidden;
    border-radius: 4px;
    background-color: #fff;
    border: 1px solid #e0e0e0;
    
    /* Performance enhancements */
    contain: layout style paint;
    transform: translateZ(0);
}

.twp-adw-custom iframe {
    width: 100% !important;
    min-height: 300px !important;
    border: none !important;
    overflow: hidden;
    border-radius: 4px;
    background-color: #f9f9f9;
    
    /* Performance optimizations */
    transform: translateZ(0);
    contain: layout;
    will-change: auto;
}

/* Performance-optimized shortcode widgets */
.twp-adw-widget-shortcode {
    clear: both;
    margin: 20px 0;
    padding: 0;
    width: 100%;
    
    /* Advanced performance optimizations */
    contain: layout style paint;
    transform: translateZ(0);
    backface-visibility: hidden;
    
    /* Optimize for dynamic content */
    position: relative;
    will-change: contents;
}

/* Optimized widget positioning with GPU acceleration */
.twp-adw-widget-top {
    margin-bottom: 30px;
    
    /* Performance optimizations */
    transform: translateZ(0);
    position: relative;
    z-index: 1;
    contain: layout style;
}

.twp-adw-widget-middle {
    margin: 30px 0;
    
    /* Performance optimizations */
    transform: translateZ(0);
    position: relative;
    z-index: 1;
    contain: layout style;
}

.twp-adw-widget-bottom {
    margin-top: 30px;
    
    /* Performance optimizations */
    transform: translateZ(0);
    position: relative;
    z-index: 1;
    contain: layout style;
}

/* High-performance loading states */
.twp-adw-widget-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    background-color: #f9f9f9;
    border: 1px solid #eee;
    border-radius: 4px;
    
    /* Performance optimizations */
    contain: layout style paint;
    transform: translateZ(0);
    
    /* Prevent interactions during loading */
    pointer-events: none;
    
    /* Memory efficient positioning */
    position: relative;
    overflow: hidden;
}

.twp-adw-widget-loading::before {
    content: "";
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    margin-right: 10px;
    
    /* GPU-accelerated animation */
    animation: twp-spin-optimized 1s linear infinite;
    will-change: transform;
    transform: translateZ(0);
}

/* Performance-optimized error states */
.twp-adw-widget-error {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    background-color: #fff5f5;
    border: 1px solid #feb2b2;
    border-radius: 4px;
    color: #c53030;
    font-weight: 500;
    text-align: center;
    padding: 20px;
    
    /* Performance optimizations */
    contain: layout style paint;
    transform: translateZ(0);
    
    /* Prevent layout shifts */
    overflow: hidden;
    word-wrap: break-word;
}

/* Global iframe security and performance optimizations */
.twp-adw-widget iframe {
    /* Security baseline */
    border: none !important;
    border-radius: 4px;
    background-color: #f9f9f9;
    max-width: 100% !important;
    
    /* Performance optimizations */
    transform: translateZ(0);
    backface-visibility: hidden;
    contain: layout;
    
    /* Memory optimization */
    will-change: auto;
    
    /* Isolation for security */
    isolation: isolate;
}

/* CRITICAL: Security protections against malicious widgets */
.twp-adw-widget[style*="expression"],
.twp-adw-widget[style*="javascript:"],
.twp-adw-widget[style*="vbscript:"] {
    /* Neutralize dangerous styles */
    background: #fff !important;
    border: 1px solid #ff0000 !important;
    color: #333 !important;
    
    /* Performance safety */
    transform: translateZ(0);
    contain: strict;
}

/* Security for suspicious data attributes */
.twp-adw-widget[data-*="javascript:"],
.twp-adw-widget[data-*="data:"],
.twp-adw-widget[data-*="vbscript:"] {
    /* Security styling */
    border: 2px solid #ff0000 !important;
    background: #ffeeee !important;
    
    /* Performance containment */
    contain: strict;
    transform: translateZ(0);
}

/* Performance-optimized responsive design */
@media screen and (max-width: 768px) {
    .twp-adw-widget {
        margin: 15px 0;
        min-height: auto;
        
        /* Mobile performance optimization */
        contain: layout style;
        transform: translateZ(0);
    }
    
    .twp-adw-getyourguide,
    .twp-adw-viator,
    .twp-adw-booking,
    .twp-adw-civitatis {
        min-height: 300px;
        
        /* Mobile optimization */
        will-change: auto;
    }
    
    .twp-adw-getyourguide iframe,
    .twp-adw-viator iframe,
    .twp-adw-booking iframe,
    .twp-adw-civitatis iframe {
        min-height: 300px !important;
        
        /* Mobile performance */
        transform: translateZ(0);
        contain: layout;
    }
}

@media screen and (max-width: 480px) {
    .twp-adw-widget {
        margin: 10px 0;
        
        /* Small screen optimization */
        contain: layout style;
    }
    
    .twp-adw-getyourguide,
    .twp-adw-viator,
    .twp-adw-booking,
    .twp-adw-civitatis {
        min-height: 250px;
    }
    
    .twp-adw-getyourguide iframe,
    .twp-adw-viator iframe,
    .twp-adw-booking iframe,
    .twp-adw-civitatis iframe {
        min-height: 250px !important;
    }
}

/* Print optimization - hide widgets for performance */
@media print {
    .twp-adw-widget,
    .twp-adw-widget iframe {
        display: none !important;
    }
}

/* High contrast mode with performance considerations */
@media (prefers-contrast: high) {
    .twp-adw-widget {
        border: 2px solid #000;
        
        /* Performance in high contrast */
        contain: layout style;
    }
    
    .twp-adw-widget-loading {
        border: 2px solid #000;
        background-color: #fff;
    }
    
    .twp-adw-widget-error {
        border: 2px solid #000;
        background-color: #fff;
        color: #000;
    }
}

/* Reduced motion support for accessibility and performance */
@media (prefers-reduced-motion: reduce) {
    .twp-adw-widget-loading::before,
    .gyg-safety-container .twp-loading-spinner {
        animation: none;
    }
    
    /* Remove all animations for performance */
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode support with performance optimization */
@media (prefers-color-scheme: dark) {
    .twp-adw-widget {
        background-color: #1e1e1e;
        
        /* Dark mode performance */
        contain: layout style;
    }
    
    .twp-adw-getyourguide,
    .twp-adw-viator,
    .twp-adw-booking,
    .twp-adw-civitatis,
    .twp-adw-custom {
        background-color: #2a2a2a;
        border-color: #444;
    }
    
    .twp-adw-widget iframe {
        background-color: #333;
    }
    
    .twp-adw-widget-loading {
        background-color: #2a2a2a;
        border-color: #444;
        color: #fff;
    }
    
    .twp-adw-widget-error {
        background-color: #2a1a1a;
        border-color: #666;
        color: #ff6b6b;
    }
}

/* Performance monitoring and debugging (development only) */
.wp-debug-mode .twp-adw-widget {
    /* Debug visualization */
    outline: 1px dashed #00a32a;
    outline-offset: 2px;
    
    /* Performance debugging */
    contain: layout style;
}

.wp-debug-mode .twp-adw-widget::before {
    content: "TWP Widget - " attr(data-provider);
    position: absolute;
    top: -20px;
    left: 0;
    font-size: 11px;
    background: #00a32a;
    color: #fff;
    padding: 2px 6px;
    border-radius: 2px;
    z-index: 9999;
    font-family: monospace;
    
    /* Performance for debug overlay */
    transform: translateZ(0);
    contain: layout style;
}

/* Performance optimization for large widget counts */
.twp-adw-widget script,
.twp-adw-widget object,
.twp-adw-widget embed {
    /* Limit potentially heavy elements */
    max-width: 100%;
    max-height: 600px;
    
    /* Performance containment */
    contain: layout style;
}

/* Final containment and isolation for all widgets */
.twp-adw-widget {
    /* CSS Containment for optimal performance */
    contain: layout style paint;
    
    /* Isolation stacking context */
    isolation: isolate;
    
    /* Hardware acceleration */
    transform: translateZ(0);
    backface-visibility: hidden;
    
    /* Optimize for frequent updates */
    will-change: auto;
}

/* Error handling for widgets without provider */
.twp-adw-widget:not([data-provider]) {
    /* Fallback styling */
    border: 1px dashed #ccc;
    background: #f9f9f9;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    
    /* Performance for error state */
    contain: layout style paint;
    transform: translateZ(0);
}

.twp-adw-widget:not([data-provider])::after {
    content: "Widget configuration error";
    font-style: italic;
    font-size: 14px;
    
    /* Performance for pseudo-element */
    contain: layout style;
}

/* Performance utilities for advanced optimization */
.twp-performance-optimized {
    /* Maximum performance mode */
    contain: strict;
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
    will-change: auto;
}

.twp-gpu-layer {
    /* Force GPU layer creation */
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

.twp-contain-strict {
    /* Strict containment for isolated widgets */
    contain: strict;
}

/* Memory-efficient animations */
@keyframes twp-fade-in-optimized {
    from { 
        opacity: 0; 
        transform: translateZ(0) scale(0.95); 
    }
    to { 
        opacity: 1; 
        transform: translateZ(0) scale(1); 
    }
}

@keyframes twp-slide-up-optimized {
    from { 
        opacity: 0; 
        transform: translateZ(0) translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateZ(0) translateY(0); 
    }
}

/* Apply animations only when needed */
.twp-adw-widget[data-animate="fade-in"] {
    animation: twp-fade-in-optimized 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.twp-adw-widget[data-animate="slide-up"] {
    animation: twp-slide-up-optimized 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Intersection Observer optimization markers */
.twp-adw-widget[data-loading="lazy"] {
    /* Placeholder for lazy-loaded widgets */
    min-height: 200px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: twp-loading-shimmer 1.5s infinite;
    
    /* Performance for loading state */
    contain: layout style paint;
    transform: translateZ(0);
}

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

/* Hide shimmer when widget is loaded */
.twp-adw-widget[data-loading="lazy"][data-loaded="true"] {
    animation: none;
    background: transparent;
}

/* Performance monitoring hooks */
.twp-performance-monitor {
    /* Invisible element for performance measurement */
    position: absolute;
    visibility: hidden;
    width: 1px;
    height: 1px;
    overflow: hidden;
    contain: strict;
}