/**
 * Image Gallery Premium — Modern Grid & Premium Design System
 * Replaces legacy Flexbox with high-performance CSS Grid and Variables.
 */

:root {
    --ig-primary: #4f46e5;
    --ig-white: #ffffff;
    --ig-radius: 12px;
    --ig-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --ig-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --ig-glass: rgba(255, 255, 255, 0.05);
    
    /* Variables injected via Shortcode */
    --ig-gutter: 20px;
    --ig-cols-lg: 4;
    --ig-cols-md: 3;
    --ig-cols-sm: 2;
    --ig-cols-xs: 1;
    --ig-overlay-color: rgba(0,0,0,0.7);
    --ig-text-color: #ffffff;
    --ig-title-bg: transparent;
    --ig-title-font-size: 16px;
    --ig-load-btn-bg: #4f46e5;
    --ig-load-btn-color: #ffffff;
}

/* Uniform Grid Mode Styles */
.ig-layout-grid .ig-image-container {
    aspect-ratio: 1 / 1;
}

.ig-layout-grid .ig-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Circle Layout Engine */
.ig-layout-circle .ig-image-card {
    aspect-ratio: 1 / 1;
    border-radius: 50% !important;
    overflow: hidden;
    background: var(--ig-card-bg-color, #ffffff);
    text-align: center;
}

.ig-layout-circle .ig-image-container {
    aspect-ratio: 1 / 1;
    width: 100%;
    border-radius: 50% !important;
    overflow: hidden;
}

.ig-layout-circle .ig-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Base Responsive Logic for Gutters */
@media (max-width: 575px) {
    :root {
        --ig-gutter: 10px !important;
    }
}

/* Grid Configuration & Variable Scaling */
.ig-row {
    display: block;
    position: relative; /* Positioning context for Isotope */
    --ig-cols-current: var(--ig-cols-xs, 1);
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 30px;
}

/* Breakpoint Scaling - Industry Standard Intervals */
@media (min-width: 576px)  { .ig-row { --ig-cols-current: var(--ig-cols-sm, 2); } }
@media (min-width: 992px)  { .ig-row { --ig-cols-current: var(--ig-cols-md, 3); } }
@media (min-width: 1200px) { .ig-row { --ig-cols-current: var(--ig-cols-lg, 4); } }

/* Base Column & Grid Sizer - Using Clean Widths */
.ig-col, .grid-sizer {
    width: calc(100% / var(--ig-cols-current));
    box-sizing: border-box;
}

.ig-col {
    padding: calc(var(--ig-gutter, 20px) / 2);
    /* No transitions on positioning properties to prevent Isotope lag */
}

/* Premium Image Card */
.ig-image-card {
    position: relative;
    border-radius: var(--ig-radius);
    background: transparent;
    transition: var(--ig-transition);
    will-change: transform;
}
/*
.ig-image-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--ig-shadow);
    z-index: 5;
}*/

/*
.ig-image-card.ig-has-card-border:hover {
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.12); 
} */

/* Premium Card Border logic */
.ig-image-card.ig-has-card-border {
    padding: var(--ig-card-padding, 12px);
    background: var(--ig-card-bg-color, #ffffff);
    border: 1px solid var(--ig-card-border-color, #eef2f6);
    border-radius: var(--ig-card-radius, var(--ig-radius));
    box-shadow: 0 4px 12px -2px rgba(0, 0, 0, 0.08); /* Sophisticated card shadow */
}


.ig-image-card.ig-has-card-border .ig-image-container {
    border-radius: calc(var(--ig-card-radius, var(--ig-radius)) - 4px); /* Proportional internal rounding */
}

.ig-image-container {
    position: relative;
    width: 100%;
    display: block;
    overflow: hidden;
    border-radius: var(--ig-radius);
}

.ig-thumbnail {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--ig-transition);
}

/* Hover Effects Logic */
.ig-hover-zoom:hover .ig-thumbnail { transform: scale(1.1); }
.ig-hover-grayscale .ig-thumbnail { filter: grayscale(100%); }
.ig-hover-grayscale:hover .ig-thumbnail { filter: grayscale(0%); }
.ig-hover-blur:hover .ig-thumbnail { filter: blur(4px); }

/* Overlay Design */
/* Overlay Positioning & Variants */
.ig-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: var(--ig-transition);
    pointer-events: none;
    display: flex;
    z-index: 2;
}

/* Bottom Overlay (Standard) */
.ig-overlay-bottom {
    align-items: flex-end;
    padding: 20px;
    background: linear-gradient(0deg, var(--ig-overlay-color) 0%, rgba(0,0,0,0) 100%);
    transform: translateY(20px);
}

/* Centered Overlay (Special for Circles/Modern Grid) */
.ig-overlay-center {
    align-items: center;
    justify-content: center;
    padding: 15px;
    background: radial-gradient(circle, var(--ig-overlay-color) 0%, rgba(0,0,0,0.4) 100%);
    transform: scale(0.85); /* Premium scale-in effect */
}

.ig-image-card:hover .ig-overlay {
    opacity: 1;
}

.ig-image-card:hover .ig-overlay-bottom {
    transform: translateY(0);
}

.ig-image-card:hover .ig-overlay-center {
    transform: scale(1);
}

/* Typography for Layout Titles */
.ig-item-title {
    color: var(--ig-text-color);
    background: var(--ig-title-bg);
    font-size: var(--ig-title-font-size);
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    display: block;
    width: 100%;
}

.ig-overlay-center .ig-item-title {
    text-align: center;
    text-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

/* Caption Below Logic */
.ig-caption-below {
    padding: 12px 0 5px 0;
    text-align: center;
    transition: var(--ig-transition);
}

.ig-caption-external {
    padding: 15px 5px 10px 5px;
    background: transparent;
}

.ig-caption-below .ig-item-title {
    color: #1e293b; /* Premium slate dark */
    background: transparent;
    text-shadow: none;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.2px;
    padding: 0;
}

/* Dark mode compatibility for captions */
.ig-layout-dark .ig-caption-below .ig-item-title {
    color: #f1f5f9;
}

/* Load More Button */
.ig-load-more-container {
    margin: 40px 0;
}

.img_load_more {
    background-color: var(--ig-load-btn-bg) !important;
    color: var(--ig-load-btn-color) !important;
    padding: 12px 35px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: var(--ig-transition);
    cursor: pointer;
}

.img_load_more:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* Spinner */
.ig-loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0,0,0,0.1);
    border-top-color: var(--ig-load-btn-bg);
    border-radius: 50%;
    display: inline-block;
    animation: igRotate 0.8s linear infinite;
}

@keyframes igRotate {
    to { transform: rotate(360deg); }
}

/* Entry Animation */
@keyframes igFadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Entry Animation - Applied to inner card to avoid Isotope transform conflicts */
.igp-card {
    animation: igFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.single-image {
    /* Ensure no transitions on positioning properties */
    transition: none !important;
}


/* Cleanup */
.text-center { text-align: center; }
.ig-image-card a { text-decoration: none !important; color: inherit; }