/* ============================================
   MASONRY GRID COMPONENT
   Extracted from: prompt_list.html, trash_bin.html, partials/_masonry_grid.html
   Used on: Homepage, Trash Bin, AI Generator Pages
   Phase 1 CSS Cleanup - November 15, 2025
   ============================================ */

/* Wrapper */
.masonry-wrapper {
    position: relative;
    width: 100%;
}

/* Flexbox grid for equal column distribution */
.masonry-grid {
    display: flex !important;
    gap: 15px;
    width: 100%;
    align-items: flex-start;
}

/* Individual columns - CRITICAL: flex: 1 ensures equal width */
.masonry-column {
    flex: 1;
    display: flex !important;
    flex-direction: column;
    gap: 15px;
    min-width: 0; /* Prevents flex items from overflowing */
}

/* Masonry items */
.masonry-item {
    width: 100% !important;
    margin-bottom: 0 !important;
    display: block !important;
    position: relative !important;
    float: none !important;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

.masonry-item.new-item {
    animation: fadeIn 0.6s ease forwards;
}

/* Prompt cards */
.prompt-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: #fff;
    width: 100%;
    height: fit-content;
}

.prompt-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Image wrappers */
.image-wrapper {
    position: relative;
    width: 100%;
}

.image-wrapper img {
    width: 100% !important;
    height: auto !important;
    display: block;
}

/* ============================================
   VIDEO CARD STYLES
   ============================================ */

.video-card {
    position: relative;
    width: 100%;
}

.video-card .image-wrapper {
    position: relative;
    width: 100%;
    background: transparent;
}

/* Video element - hidden by default */
.gallery-video {
    width: 100%;
    height: auto;
    display: none;
    visibility: hidden;
    object-fit: contain;
    border-radius: 12px;
    position: relative;
    z-index: 2;
}

/* When video is playing */
.gallery-video[data-initialized="true"] {
    display: block;
    visibility: visible;
}

/* Thumbnail - overlays video */
.video-thumbnail {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.3s ease;
    object-fit: contain;
    border-radius: 12px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 3;
    pointer-events: none;
}

/* Fade out when video plays */
.video-thumbnail[style*="opacity: 0"] {
    opacity: 0 !important;
}

/* Play icon - centered overlay */
.video-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    color: rgba(255, 255, 255, 0.9);
    pointer-events: none;
    transition: opacity 0.3s ease;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    z-index: 4;
}

.video-card:hover .video-play-icon {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-play-icon[style*="opacity: 0"] {
    opacity: 0 !important;
}

/* Video in detail page */
.hero-video {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
    display: block;
}

/* Video loading state */
.video-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 24px;
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* 4 columns → 3 columns */
@media (max-width: 1100px) {
    .masonry-grid[data-columns="3"] .masonry-column:nth-child(4) {
        display: none !important;
    }
}

/* 3 columns → 2 columns */
@media (max-width: 800px) {
    .masonry-grid[data-columns="2"] .masonry-column:nth-child(3),
    .masonry-grid[data-columns="2"] .masonry-column:nth-child(4) {
        display: none !important;
    }
}

/* Mobile-specific video fix */
@media (max-width: 768px) {
    .video-card .image-wrapper {
        position: relative;
        width: 100%;
    }

    .video-thumbnail {
        position: relative !important;
        width: 100%;
        height: auto;
        display: block;
        opacity: 1 !important;
    }

    .gallery-video {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: contain;
        display: none !important;
    }

    .video-play-icon {
        z-index: 10;
        opacity: 1 !important;
    }
}

/* 2 columns → 1 column */
@media (max-width: 500px) {
    .masonry-grid[data-columns="1"] .masonry-column:nth-child(2),
    .masonry-grid[data-columns="1"] .masonry-column:nth-child(3),
    .masonry-grid[data-columns="1"] .masonry-column:nth-child(4) {
        display: none !important;
    }
}

/* Hide unused masonry.js elements */
.grid-sizer,
.gutter-sizer {
    display: none !important;
}

/* Placeholder image styling */
.placeholder-image {
    background-color: #f0f0f0;
    object-fit: contain;
}