/* ==========================================================================
   INDO AGRO - Gallery Page Stylesheet (gallery.css)
   ========================================================================== */

/* Gallery Hero */
.gallery-hero {
    background-color: var(--color-bg-dark);
    color: var(--color-white);
    padding: 140px 0 80px;
    position: relative;
    overflow: hidden;
    text-align: center;
}
.gallery-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 50% 50%, rgba(76, 175, 80, 0.1) 0%, transparent 60%);
}
.gallery-hero h1 {
    font-size: 3rem;
    color: var(--color-white);
    margin-bottom: 16px;
}
.gallery-hero p {
    color: var(--color-gray-300);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* Before/After Interactive Comparison Section */
.comparison-slider-section {
    background-color: var(--color-white);
    padding: 80px 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.slider-container {
    max-width: 900px;
    margin: 0 auto;
}

.before-after-slider {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-premium);
    user-select: none;
}
@media (max-width: 768px) {
    .before-after-slider {
        height: 350px;
    }
}

.slider-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.slider-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-before {
    z-index: 1;
}

.image-after {
    z-index: 2;
    /* clip-path will be updated dynamically by JS */
    clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

/* Before / After labels */
.slider-label {
    position: absolute;
    bottom: 20px;
    background-color: rgba(13, 20, 16, 0.8);
    backdrop-filter: blur(4px);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    z-index: 3;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.label-before {
    left: 20px;
    border-left: 3px solid var(--color-accent-red);
}
.label-after {
    right: 20px;
    border-right: 3px solid var(--color-secondary);
}

/* Vertical slider control bar */
.slider-handle {
    position: absolute;
    top: 0;
    /* left will be updated dynamically by JS */
    left: 50%;
    width: 4px;
    height: 100%;
    background-color: var(--color-white);
    z-index: 4;
    cursor: ew-resize;
    transform: translateX(-50%);
}

.slider-handle-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    border: 3px solid var(--color-white);
    border-radius: 50%;
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    font-weight: 700;
}

/* Category Filters */
.filter-menu {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin: 50px 0 30px;
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    padding: 10px 24px;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-fast);
}
.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* Masonry / Grid Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 280px;
    gap: 20px;
    margin-bottom: 80px;
}
@media (max-width: 992px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 240px;
    }
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition-normal);
}
/* Masonry asymetric grid spans */
.gallery-item.w-2 {
    grid-column: span 2;
}
.gallery-item.h-2 {
    grid-row: span 2;
}
@media (max-width: 768px) {
    .gallery-item.w-2 {
        grid-column: span 1;
    }
    .gallery-item.h-2 {
        grid-row: span 1;
    }
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition-slow);
}
.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 77, 44, 0.8) 0%, transparent 60%);
    opacity: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    color: var(--color-white);
    transition: var(--transition-fast);
}
.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay h3 {
    color: var(--color-white);
    font-size: 1.15rem;
    margin-bottom: 4px;
}
.gallery-overlay span {
    font-size: 0.8rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Lightbox overlay */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(13, 20, 16, 0.95);
    backdrop-filter: blur(8px);
    z-index: var(--z-lightbox);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}
.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 85vh;
}

.lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border: 3px solid var(--color-white);
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.lightbox-caption {
    color: var(--color-white);
    text-align: center;
    margin-top: 15px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 2rem;
    cursor: pointer;
}
.lightbox-close:hover {
    color: var(--color-accent);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    color: var(--color-white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}
.lightbox-nav:hover {
    background: var(--color-secondary);
}
.lightbox-prev {
    left: -70px;
}
.lightbox-next {
    right: -70px;
}
@media (max-width: 768px) {
    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }
}