/* Page Transition and Loading Styles */

/* Prevent white flash on page load */
html {
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
}

/* Page transition overlay */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.page-transition.fade-out {
    opacity: 0;
}

/* Loading spinner */
.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    border: 3px solid rgba(233, 69, 96, 0.3);
    border-top: 3px solid #e94560;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Page fade-in animation */
.page-content {
    opacity: 0;
    animation: pageLoad 0.8s ease forwards;
    animation-delay: 0.2s;
}

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

/* Lazy loading image placeholder */
.lazy-image {
    background: linear-gradient(45deg, #e94560, #4ecdc4);
    background-size: 400% 400%;
    animation: gradientShift 2s ease infinite;
    position: relative;
    overflow: hidden;
}

.lazy-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 1.5s infinite;
}

.lazy-image img {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-image img.loaded {
    opacity: 1;
}

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

/* Smooth link transitions */
.smooth-link {
    position: relative;
    transition: all 0.3s ease;
}

.smooth-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(233, 69, 96, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: inherit;
}

.smooth-link:hover::before {
    opacity: 1;
}

/* Preloader for critical resources */
.resource-preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 10000;
}

.resource-preloader .progress {
    height: 100%;
    background: linear-gradient(90deg, #e94560, #4ecdc4);
    width: 0%;
    transition: width 0.3s ease;
}

/* Skeleton loading for content */
.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.1) 25%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0.1) 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
}

@keyframes skeletonLoading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
    border-radius: 4px;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    border-radius: 10px;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    .page-transition,
    .page-content,
    .lazy-image,
    .smooth-link {
        animation: none;
        transition: none;
    }
    
    .loading-spinner {
        animation: none;
        border: 3px solid #e94560;
    }
}