/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* ===== FILTER SECTION ===== */
.gallery-filters {
    padding: var(--spacing-xl) 0;
    background: var(--bg-white);
    /* position: sticky; */
    /* top: 0; */

    box-shadow: var(--shadow-md);
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base) var(--ease-in-out);
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    color: var(--text-light);
    border-color: var(--primary-color);
}

/* ===== GALLERY GRID ===== */
.gallery-main {
    padding: var(--spacing-3xl) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.gallery-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-2xl);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base) var(--ease-out);
    background: var(--bg-white);
}

.gallery-card::before {
    content: "";
    display: block;
    padding-bottom: 75%;
}

.gallery-card img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow) var(--ease-out);
}

.gallery-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.gallery-card:hover img {
    transform: scale(1.1);
}

.gallery-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--text-light);
    padding: var(--spacing-lg);
    transform: translateY(100%);
    transition: transform var(--transition-base) var(--ease-out);
}

.gallery-card:hover .gallery-card-overlay {
    transform: translateY(0);
}

.gallery-card-overlay h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semibold);
}

.gallery-card-overlay p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.gallery-card.hide {
    display: none;
}

/* ===== LIGHTBOX ===== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    text-align: center;
    position: relative;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.lightbox-caption {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
}

.lightbox-caption h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    border: none;
    font-size: var(--font-size-5xl);
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    line-height: 1;
    transition: var(--transition-base);
    z-index: 10;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    border: none;
    font-size: var(--font-size-4xl);
    cursor: pointer;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    z-index: 10;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.3);
}

.lightbox-prev {
    left: var(--spacing-md);
}

.lightbox-next {
    right: var(--spacing-md);
}

.header {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    font-family: var(--font-primary);
}

.header p {
    font-size: 1.125rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

.back-link {
    display: inline-block;
    color: white;
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    font-size: 0.95rem;
    opacity: 0.9;
    transition: var(--transition-base);
}

.back-link:hover {
    opacity: 1;
    transform: translateX(-4px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .gallery-hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .lightbox-nav {
        font-size: var(--font-size-2xl);
        padding: 0.75rem;
    }

    .lightbox-close {
        font-size: var(--font-size-3xl);
        padding: var(--spacing-sm) 0.75rem;
    }
}