/**
 * Dynamic Image Gallery - Main Styles
 *
 * Clean, semantic CSS with BEM naming and CSS custom properties.
 *
 * @package Dynamic_Image_Gallery
 */

/* ==========================================================================
   CSS Custom Properties (Variables)
   ========================================================================== */

:root {
    /* Grid Layout */
    --dig-gap: 20px;
    --dig-columns: 3;
    --dig-columns-tablet: 2;
    --dig-columns-mobile: 1;

    /* Image Cards */
    --dig-border-radius: 0;
    --dig-aspect-ratio: 4/3;
    --dig-object-fit: cover;
    --dig-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --dig-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.15);

    /* Overlay */
    --dig-overlay-bg: rgba(0, 0, 0, 0.6);
    --dig-overlay-color: #ffffff;
    --dig-transition: 0.3s ease;

    /* Filters */
    --dig-filter-bg: #f8f9fa;
    --dig-filter-border: #ddd;
    --dig-filter-radius: 4px;
    --dig-button-bg: #e74c3c;
    --dig-button-color: #ffffff;
    --dig-button-hover: #c0392b;

    /* Typography */
    --dig-font-family: inherit;
    --dig-title-size: 1rem;
    --dig-title-weight: 600;
    --dig-caption-size: 0.875rem;
}

/* ==========================================================================
   Gallery Wrapper
   ========================================================================== */

.dig-gallery {
    font-family: var(--dig-font-family);
    width: 100%;
}

/* ==========================================================================
   Filter Bar
   ========================================================================== */

.dig-filters {
    margin-bottom: 2rem;
}

.dig-filters__row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

/* Search row - full width with inline button */
.dig-filters__row--search {
    margin-bottom: 1rem;
}

.dig-filters__row--search .dig-filters__item--search {
    display: flex;
    gap: 0.5rem;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.dig-filters__row--search .dig-filters__search {
    flex: 1;
}

/* Dropdowns row - centered */
.dig-filters__row--dropdowns {
    justify-content: center;
}

.dig-filters__item {
    flex: 0 1 auto;
    min-width: 150px;
}

.dig-filters__item--search {
    flex: 2;
    min-width: 200px;
}

.dig-filters__item--actions {
    flex: 0 0 auto;
    min-width: auto;
}

.dig-filters__search,
.dig-filters__select {
    width: 100%;
    padding: 1rem 1.125rem;
    border: 1px solid var(--dig-filter-border);
    border-radius: var(--dig-filter-radius);
    background-color: var(--dig-filter-bg);
    font-size: 1.5rem;
    line-height: 1.4;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.dig-filters__search:focus,
.dig-filters__select:focus {
    outline: none;
    border-color: var(--dig-button-bg);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.dig-filters__button {
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--dig-filter-radius);
    font-size: 1.5rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.dig-filters__button--reset {
    background-color: #6c757d;
    color: #fff;
}

.dig-filters__button--reset:hover {
    background-color: #545b62;
}

.dig-filters__button--search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--dig-button-bg);
    color: var(--dig-button-color);
}

.dig-filters__button--search:hover {
    background-color: var(--dig-button-hover);
}

/* ==========================================================================
   Gallery Grid
   ========================================================================== */

.dig-grid {
    display: grid;
    grid-template-columns: repeat(var(--dig-columns), 1fr);
    gap: var(--dig-gap);
}

/* Responsive columns */
@media (max-width: 1024px) {
    .dig-grid {
        grid-template-columns: repeat(var(--dig-columns-tablet), 1fr);
    }
}

@media (max-width: 640px) {
    .dig-grid {
        grid-template-columns: repeat(var(--dig-columns-mobile), 1fr);
    }

    .dig-filters__row {
        flex-direction: column;
    }

    .dig-filters__item,
    .dig-filters__item--search {
        width: 100%;
        min-width: 100%;
        flex: none;
    }
}

/* Loading State */
.dig-grid__loading {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 3rem;
    color: #6c757d;
    font-size: 1rem;
}

.dig-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #e9ecef;
    border-top-color: var(--dig-button-bg);
    border-radius: 50%;
    animation: dig-spin 0.8s linear infinite;
}

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

/* Empty State */
.dig-grid__empty {
    grid-column: 1 / -1;
    padding: 3rem;
    text-align: center;
    color: #6c757d;
    font-size: 1rem;
    background-color: #f8f9fa;
    border-radius: var(--dig-border-radius);
}

/* ==========================================================================
   Gallery Item (Card)
   ========================================================================== */

.dig-item {
    position: relative;
    border-radius: 0;
    overflow: hidden;
    background-color: #fff;
    box-shadow: var(--dig-shadow);
    transition: transform var(--dig-transition), box-shadow var(--dig-transition);
}

.dig-item__image-wrapper {
    position: relative;
    aspect-ratio: 1.618 / 1;
    overflow: hidden;
    background-color: #f0f0f0;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}

/* Remove the img tag styling since we use background now */
.dig-item__image {
    display: none;
}

.dig-item__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #ccc;
}

/* Overlay */
.dig-item__overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 0.25rem;
    padding: 1rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    color: var(--dig-overlay-color);
    text-align: left;
    opacity: 0;
    transition: opacity var(--dig-transition);
}

.dig-item__overlay-title {
    font-size: 1rem;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.dig-item__overlay-categories {
    font-size: 0.75rem;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* Content Below Image */
.dig-item__content {
    padding: 1rem;
}

.dig-item__title {
    margin: 0 0 0.25rem;
    font-size: var(--dig-title-size);
    font-weight: var(--dig-title-weight);
    color: #333;
}

.dig-item__caption,
.dig-item__description {
    margin: 0;
    font-size: var(--dig-caption-size);
    color: #666;
    line-height: 1.5;
}

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

/* Zoom Effect */
.dig-gallery--hover-zoom .dig-item:hover .dig-item__image {
    transform: scale(1.08);
}

.dig-gallery--hover-zoom .dig-item:hover .dig-item__overlay {
    opacity: 1;
}

/* Lift Effect */
.dig-gallery--hover-lift .dig-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--dig-shadow-hover);
}

.dig-gallery--hover-lift .dig-item:hover .dig-item__overlay {
    opacity: 1;
}

/* Fade Effect */
.dig-gallery--hover-fade .dig-item:hover .dig-item__image {
    opacity: 0.85;
}

.dig-gallery--hover-fade .dig-item:hover .dig-item__overlay {
    opacity: 1;
}

/* Lightbox cursor */
.dig-gallery--has-lightbox .dig-item {
    cursor: pointer;
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.dig-pagination {
    margin-top: 2rem;
}

.dig-pagination__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.dig-pagination__numbers {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.dig-pagination__button {
    min-width: 40px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--dig-filter-border);
    border-radius: var(--dig-filter-radius);
    background-color: #fff;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.dig-pagination__button:hover {
    background-color: #f8f9fa;
    border-color: #adb5bd;
}

.dig-pagination__button--active {
    background-color: var(--dig-button-bg);
    border-color: var(--dig-button-bg);
    color: var(--dig-button-color);
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.4);
    cursor: default;
    transform: scale(1.1);
}

.dig-pagination__button--active:hover {
    background-color: var(--dig-button-bg);
    transform: scale(1.1);
}

.dig-pagination__button--prev,
.dig-pagination__button--next {
    min-width: auto;
}

.dig-pagination__ellipsis {
    padding: 0 0.25rem;
    color: #6c757d;
}

/* ==========================================================================
   Shadow Variants (set via data attribute or class)
   ========================================================================== */

.dig-gallery[data-shadow="none"] .dig-item {
    box-shadow: none;
}

.dig-gallery[data-shadow="subtle"] .dig-item {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.dig-gallery[data-shadow="medium"] .dig-item {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.dig-gallery[data-shadow="strong"] .dig-item {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

/* ==========================================================================
   Loading State
   ========================================================================== */

.dig-grid--loading {
    position: relative;
    min-height: 200px;
}

.dig-grid--loading::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    z-index: 10;
}

.dig-grid__loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    font-size: 1.125rem;
    font-weight: 500;
    color: #333;
}

.dig-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #e0e0e0;
    border-top-color: var(--dig-button-bg, #e74c3c);
    border-radius: 50%;
    animation: dig-spin 0.8s linear infinite;
}

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

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {

    .dig-filters,
    .dig-pagination,
    .dig-item__overlay {
        display: none !important;
    }

    .dig-grid {
        gap: 10px;
    }

    .dig-item {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}