/**
 * Instagram Gallery Sync Pro - Base Styles
 * 
 * Core styles for all gallery layouts
 * 
 * @package Instagram_Gallery_Sync_Pro
 */

/* ============================================
   CSS Variables (customizable via admin)
   ============================================ */
:root {
    --igsp-primary: #e1306c;
    --igsp-hover: #c13584;
    --igsp-text: #ffffff;
    --igsp-font-size: 14px;
    --igsp-radius: 0px;
    --columns: 3;
    --spacing: 10px;
}

/* ============================================
   Gallery Container
   ============================================ */
.igsp-gallery {
    position: relative;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    padding: var(--outer-padding, 0px);
}

.igsp-gallery *,
.igsp-gallery *::before,
.igsp-gallery *::after {
    box-sizing: border-box;
}

/* ============================================
   Gallery Item
   ============================================ */
.igsp-item {
    position: relative;
    overflow: hidden;
    background: #f0f0f0;
    border-radius: var(--igsp-radius);
}

.igsp-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.igsp-image-wrapper {
    position: relative;
    overflow: hidden;
    width: 100%;
}

.igsp-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: var(--object-fit, cover);
    transition: transform 0.4s ease, filter 0.4s ease;
}

/* Aspect Ratios */
.igsp-aspect-square .igsp-image-wrapper {
    padding-bottom: 100%;
}

.igsp-aspect-4-3 .igsp-image-wrapper {
    padding-bottom: 75%;
}

.igsp-aspect-16-9 .igsp-image-wrapper {
    padding-bottom: 56.25%;
}

.igsp-aspect-3-4 .igsp-image-wrapper {
    padding-bottom: 133.33%;
}

.igsp-aspect-square .igsp-image,
.igsp-aspect-4-3 .igsp-image,
.igsp-aspect-16-9 .igsp-image,
.igsp-aspect-3-4 .igsp-image {
    position: absolute;
    top: 0;
    left: 0;
}

/* ============================================
   Overlays
   ============================================ */
.igsp-overlay,
.igsp-hover-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

.igsp-overlay {
    background: linear-gradient(transparent 50%, rgba(0, 0, 0, 0.7));
    align-items: flex-end;
    padding: 15px;
    opacity: 1;
}

.igsp-hover-overlay {
    background: var(--igsp-hover);
    opacity: 0;
}

.igsp-item:hover .igsp-hover-overlay {
    opacity: 0.8;
}

.igsp-caption {
    color: var(--igsp-text);
    font-size: var(--igsp-font-size);
    line-height: 1.4;
    text-align: left;
    width: 100%;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.igsp-caption-below {
    padding: 12px;
    font-size: var(--igsp-font-size);
    color: #333;
    background: #fff;
    border: 1px solid #eee;
    border-top: none;
    border-radius: 0 0 var(--igsp-radius) var(--igsp-radius);
}

.igsp-icon {
    color: var(--igsp-text);
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.igsp-icon svg {
    width: 32px;
    height: 32px;
}

.igsp-item:hover .igsp-icon {
    opacity: 1;
    transform: scale(1);
}

/* ============================================
   Hover Effects
   ============================================ */

/* Zoom */
.igsp-hover-zoom .igsp-item:hover .igsp-image {
    transform: scale(1.1);
}

/* Fade */
.igsp-hover-fade .igsp-overlay {
    opacity: 0;
}

.igsp-hover-fade .igsp-item:hover .igsp-overlay {
    opacity: 1;
}

/* Overlay with Icon */
.igsp-hover-overlay .igsp-hover-overlay {
    opacity: 0;
}

/* Grayscale */
.igsp-hover-grayscale .igsp-image {
    filter: grayscale(100%);
}

.igsp-hover-grayscale .igsp-item:hover .igsp-image {
    filter: grayscale(0%);
}

/* Lift */
.igsp-hover-lift .igsp-item {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.igsp-hover-lift .igsp-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* ============================================
   Follow Button
   ============================================ */
.igsp-follow-btn-wrapper {
    text-align: center;
    margin-top: 25px;
}

.igsp-follow-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: var(--igsp-primary);
    color: var(--igsp-text);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.igsp-follow-btn:hover {
    background: var(--igsp-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(225, 48, 108, 0.3);
}

.igsp-follow-btn svg {
    flex-shrink: 0;
}

/* ============================================
   Empty State
   ============================================ */
.igsp-empty {
    text-align: center;
    padding: 40px 20px;
    background: #f9f9f9;
    border-radius: var(--igsp-radius);
    color: #666;
}

/* ============================================
   Loading States
   ============================================ */
.igsp-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 3;
    transform: translate(-50%, -50%);
}

.igsp-has-loader:not(.loaded) {
    min-height: 200px;
}

.igsp-gallery.loaded .igsp-loader {
    display: none;
}

/* Spinner */
.igsp-loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--igsp-primary);
    border-radius: 50%;
    animation: igsp-spin 1s linear infinite;
}

@keyframes igsp-spin {
    to {
        transform: rotate(360deg);
    }
}

/* Dots */
.igsp-loader-dots {
    display: flex;
    gap: 8px;
}

.igsp-loader-dots span {
    width: 10px;
    height: 10px;
    background: var(--igsp-primary);
    border-radius: 50%;
    animation: igsp-bounce 1.4s ease-in-out infinite both;
}

.igsp-loader-dots span:nth-child(2) {
    animation-delay: 0.16s;
}

.igsp-loader-dots span:nth-child(3) {
    animation-delay: 0.32s;
}

@keyframes igsp-bounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}

/* Pulse */
.igsp-loader-pulse {
    width: 40px;
    height: 40px;
    background: var(--igsp-primary);
    border-radius: 50%;
    animation: igsp-pulse 1.5s ease-in-out infinite;
}

@keyframes igsp-pulse {
    0% {
        transform: scale(0);
        opacity: 1;
    }

    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

/* Skeleton */
.igsp-skeleton .igsp-item {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: igsp-skeleton 1.5s ease-in-out infinite;
}

.igsp-skeleton.loaded .igsp-item {
    animation: none;
}

@keyframes igsp-skeleton {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Lazy load fade-in */
.igsp-image.lazyload {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.igsp-image.loaded {
    opacity: 1;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */
@media (max-width: 1024px) {
    .igsp-gallery {
        --columns: var(--columns-tablet, 2);
    }
}

@media (max-width: 767px) {
    .igsp-gallery {
        --columns: var(--columns-mobile, 1);
    }

    .igsp-follow-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Accessibility
   ============================================ */
.igsp-link:focus {
    outline: 2px solid var(--igsp-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {

    .igsp-image,
    .igsp-overlay,
    .igsp-hover-overlay,
    .igsp-icon,
    .igsp-item,
    .igsp-follow-btn {
        transition: none;
    }

    .igsp-loader-spinner,
    .igsp-loader-dots span,
    .igsp-loader-pulse {
        animation: none;
    }
}