/* Page Loading Overlay */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #faf9f6, #ffffff);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    animation: pulse-fade 2s infinite ease-in-out;
    transform: scale(1.2);
}

.loader-logo img {
    width: 180px;
    height: auto;
    margin-bottom: 30px;
    opacity: 0.9;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.loader-spinner {
    margin: 30px 0;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #f0f2f5;
    border-top: 4px solid #4a90e2;
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.loader-text {
    color: #666;
    font-size: 1.1rem;
    margin-top: 25px;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.loader-progress {
    margin-top: 30px;
    width: 250px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background-color: #f0f2f5;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4a90e2, #5ba0f2);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 2px;
}

.progress-text {
    font-size: 0.9rem;
    color: #888;
    margin: 0;
    font-weight: 300;
}

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

@keyframes pulse-fade {
    0%, 100% { 
        opacity: 0.7; 
        transform: scale(1.2);
    }
    50% { 
        opacity: 1; 
        transform: scale(1.25);
    }
}

/* Enhanced Image loading animations */
.image-container {
    position: relative;
    overflow: hidden;
    background-color: #f8f9fa;
    border-radius: 8px;
}

/* Modern skeleton loading with shimmer effect */
.image-loading::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 1.5s infinite;
    z-index: 2;
}

.image-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, #f0f2f5 25%, #e4e6ea 50%, #f0f2f5 75%);
    background-size: 200% 100%;
    animation: skeleton-wave 1.2s infinite ease-in-out;
    z-index: 1;
}

/* Shimmer animation */
@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Skeleton wave animation */
@keyframes skeleton-wave {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Image fade-in when loaded */
.image-container img {
    opacity: 0;
    transform: scale(1.05);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.image-loaded::after,
.image-loaded::before {
    display: none;
}

.image-loaded img {
    opacity: 1;
    transform: scale(1);
}

/* Remove old animations */
@keyframes loading-shine {
    to {
        left: 100%;
    }
}

/* Enhanced Skeleton Loading */
.skeleton-loader {
    background: linear-gradient(90deg, #f0f2f5 25%, #e4e6ea 50%, #f0f2f5 75%);
    background-size: 200% 100%;
    animation: skeleton-wave 1.2s infinite ease-in-out;
    border-radius: 6px;
}

/* Skeleton for project cards with enhanced visual appeal */
.project-card.loading {
    pointer-events: none;
    position: relative;
}

.project-card.loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(248, 249, 250, 0.8);
    z-index: 1;
    border-radius: 8px;
}

.project-card.loading .project-info h3,
.project-card.loading .project-info p {
    background: linear-gradient(90deg, #f0f2f5 25%, #e4e6ea 50%, #f0f2f5 75%);
    background-size: 200% 100%;
    animation: skeleton-wave 1.2s infinite ease-in-out;
    color: transparent;
    border-radius: 6px;
    min-height: 1.2em;
    position: relative;
    overflow: hidden;
}

.project-card.loading .project-info h3 {
    width: 75%;
    margin-bottom: 12px;
    height: 1.5em;
}

.project-card.loading .project-info p {
    width: 90%;
    margin-bottom: 10px;
    height: 1em;
}

.project-card.loading .project-info p:nth-child(3) {
    width: 85%;
}

.project-card.loading .project-info p:last-child {
    width: 65%;
}

/* Skeleton for carousel */
.carousel-slide.loading img {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

/* Progressive loading enhancement */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for multiple elements */
.fade-in-up:nth-child(1) { transition-delay: 0.1s; }
.fade-in-up:nth-child(2) { transition-delay: 0.2s; }
.fade-in-up:nth-child(3) { transition-delay: 0.3s; }
.fade-in-up:nth-child(4) { transition-delay: 0.4s; }
.fade-in-up:nth-child(5) { transition-delay: 0.5s; }
.fade-in-up:nth-child(6) { transition-delay: 0.6s; }

/* Modifications for project cards with smooth loading */
.project-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.project-card.loaded {
    opacity: 1;
    transform: translateY(0);
}

.project-card .image-container {
    height: 250px; /* Same as project card img height */
    border-radius: 8px 8px 0 0;
    background: linear-gradient(90deg, #f0f2f5 25%, #e4e6ea 50%, #f0f2f5 75%);
    background-size: 200% 100%;
    animation: skeleton-wave 1.2s infinite ease-in-out;
}

.project-card .image-loaded {
    background: none;
    animation: none;
}

/* Modifications for gallery images */
.gallery-main .image-container {
    width: 100%;
    height: 0;
    padding-top: 56.25%; /* 16:9 aspect ratio */
}

.gallery-main .image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-main .image-loaded img {
    opacity: 1;
}

.thumbnail .image-container {
    width: 100%;
    height: 0;
    padding-top: 100%; /* 1:1 aspect ratio for thumbnails */
}

.thumbnail .image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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