/**
 * Gallery Components Styling
 * Modern gallery layouts with responsive design and smooth animations
 * 
 * @package StileSalentino
 * @version 2.1.0
 */

/* ============================================================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================================================ */

:root {
    --fd-gallery-gap: 1rem;
    --fd-gallery-border-radius: 12px;
    --fd-gallery-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --fd-gallery-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --fd-gallery-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --fd-gallery-background: #ffffff;
    --fd-gallery-overlay: rgba(0, 0, 0, 0.7);
}

/* ============================================================================
   GALLERY BASE STYLES
   ============================================================================ */

.fd-gallery {
    margin: 2rem 0;
    position: relative;
    container-type: inline-size;
}

.fd-gallery * {
    box-sizing: border-box;
}

/* ============================================================================
   GRID LAYOUT SYSTEM
   ============================================================================ */

.fd-gallery__grid {
    display: grid;
    gap: var(--fd-gallery-gap);
    grid-template-columns: repeat(var(--columns, 3), 1fr);
}

/* Grid Column Variations */
.fd-gallery__grid--columns-1 { --columns: 1; }
.fd-gallery__grid--columns-2 { --columns: 2; }
.fd-gallery__grid--columns-3 { --columns: 3; }
.fd-gallery__grid--columns-4 { --columns: 4; }
.fd-gallery__grid--columns-5 { --columns: 5; }
.fd-gallery__grid--columns-6 { --columns: 6; }

/* Grid Gap Variations */
.fd-gallery__grid--gap-small { --fd-gallery-gap: 0.5rem; }
.fd-gallery__grid--gap-medium { --fd-gallery-gap: 1rem; }
.fd-gallery__grid--gap-large { --fd-gallery-gap: 2rem; }
.fd-gallery__grid--gap-xlarge { --fd-gallery-gap: 3rem; }

/* ============================================================================
   GALLERY ITEMS
   ============================================================================ */

.fd-gallery__item {
    position: relative;
    overflow: hidden;
    border-radius: var(--fd-gallery-border-radius);
    background: var(--fd-gallery-background);
    box-shadow: var(--fd-gallery-shadow);
    transition: var(--fd-gallery-transition);
    cursor: pointer;
    aspect-ratio: 1;
}

.fd-gallery__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--fd-gallery-shadow-hover);
}

.fd-gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--fd-gallery-transition);
    display: block;
}

.fd-gallery__item a {
    display: block;
    position: relative;
    text-decoration: none;
    color: inherit;
    width: 100%;
    height: 100%;
}

/* ============================================================================
   HOVER EFFECTS
   ============================================================================ */

/* Zoom Hover Effect (Default) */
.fd-gallery__item:hover img {
    transform: scale(1.05);
}

/* Lightbox Overlay Effect */
.fd-gallery__item a::after {
    content: "🔍";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    color: white;
    background: var(--fd-gallery-overlay);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--fd-gallery-transition);
    pointer-events: none;
    backdrop-filter: blur(4px);
}

.fd-gallery__item:hover a::after {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

/* ============================================================================
   BENTO GRID LAYOUT (Pinterest-style)
   ============================================================================ */

.fd-gallery__bento {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, minmax(120px, 1fr));
    gap: 0.75rem;
    height: 500px;
    border-radius: var(--fd-gallery-border-radius);
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1rem;
}

/* Bento Item Positioning */
.fd-gallery__bento-item--large {
    grid-column: span 2;
    grid-row: span 2;
}

.fd-gallery__bento-item--medium {
    grid-column: span 1;
    grid-row: span 2;
}

.fd-gallery__bento-item--small {
    grid-column: span 1;
    grid-row: span 1;
}

.fd-gallery__bento .fd-gallery__item {
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    aspect-ratio: unset;
}

.fd-gallery__bento .fd-gallery__item:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.15);
}

/* ============================================================================
   CAPTIONS
   ============================================================================ */

.fd-gallery__caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    color: white;
    padding: 1.5rem 1rem 1rem;
    font-size: 0.9rem;
    line-height: 1.4;
    transform: translateY(100%);
    transition: var(--fd-gallery-transition);
    backdrop-filter: blur(10px);
}

.fd-gallery__item:hover .fd-gallery__caption {
    transform: translateY(0);
}

/* ============================================================================
   LOADING STATES & ANIMATIONS
   ============================================================================ */

.fd-gallery__item {
    opacity: 0;
    animation: fadeInGallery 0.6s ease-out forwards;
}

.fd-gallery__item:nth-child(1) { animation-delay: 0.1s; }
.fd-gallery__item:nth-child(2) { animation-delay: 0.2s; }
.fd-gallery__item:nth-child(3) { animation-delay: 0.3s; }
.fd-gallery__item:nth-child(4) { animation-delay: 0.4s; }
.fd-gallery__item:nth-child(5) { animation-delay: 0.5s; }
.fd-gallery__item:nth-child(n+6) { animation-delay: 0.6s; }

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

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

/* Large Desktop (1200px+) */
@media (min-width: 1200px) {
    .fd-gallery__bento {
        height: 600px;
        gap: 1rem;
        padding: 1.5rem;
    }
}

/* Desktop (992px - 1199px) */
@media (max-width: 1199px) {
    .fd-gallery__grid {
        --columns: min(var(--columns), 3);
    }
}

/* Tablet (768px - 991px) */
@media (max-width: 991px) {
    :root {
        --fd-gallery-gap: 0.75rem;
        --fd-gallery-border-radius: 8px;
    }
    
    .fd-gallery__grid {
        --columns: min(var(--columns), 2);
    }
    
    .fd-gallery__bento {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(2, minmax(150px, 1fr));
        height: 400px;
        gap: 0.5rem;
        padding: 0.75rem;
    }
    
    .fd-gallery__bento-item--large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .fd-gallery__bento-item--medium {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .fd-gallery__bento-item--small {
        display: none;
    }
    
    .fd-gallery__item a::after {
        font-size: 1.5rem;
        width: 50px;
        height: 50px;
    }
}

/* Mobile (up to 767px) */
@media (max-width: 767px) {
    :root {
        --fd-gallery-gap: 0.5rem;
        --fd-gallery-border-radius: 6px;
    }
    
    .fd-gallery {
        margin: 1rem 0;
    }
    
    .fd-gallery__grid {
        --columns: 1;
    }
    
    .fd-gallery__bento {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(2, 200px);
        height: auto;
        gap: 0.5rem;
        padding: 0.5rem;
    }
    
    .fd-gallery__bento-item--large,
    .fd-gallery__bento-item--medium {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .fd-gallery__bento-item--small {
        display: none;
    }
    
    .fd-gallery__caption {
        font-size: 0.8rem;
        padding: 1rem 0.75rem 0.75rem;
    }
    
    .fd-gallery__item a::after {
        font-size: 1.25rem;
        width: 40px;
        height: 40px;
    }
}

/* ============================================================================
   ACCESSIBILITY & FOCUS STATES
   ============================================================================ */

.fd-gallery__item a:focus {
    outline: 3px solid #007cba;
    outline-offset: 2px;
    border-radius: var(--fd-gallery-border-radius);
}

.fd-gallery__item a:focus::after {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .fd-gallery__item,
    .fd-gallery__item img,
    .fd-gallery__caption,
    .fd-gallery__item a::after {
        transition: none;
        animation: none;
    }
    
    .fd-gallery__item {
        opacity: 1;
        animation: none;
    }
    
    .fd-gallery__item:hover {
        transform: none;
    }
}

/* ============================================================================
   DARK MODE SUPPORT
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --fd-gallery-background: #2c2c2c;
        --fd-gallery-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        --fd-gallery-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.4);
    }
    
    .fd-gallery__bento {
        background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
    }
}