/* =================================================================
   Gallery Styles
   ================================================================= */

/* Gallery Filter */
.gallery-filter {
    padding: var(--spacing-lg) 0;
    background: linear-gradient(to bottom, var(--gray-light) 0%, var(--white) 100%);
    border-bottom: 2px solid var(--accent-cyan);
}

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

.filter-btn {
    padding: 10px 24px;
    background-color: var(--white);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    min-height: 44px;
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--accent-cyan);
    transition: width 0.3s ease;
    z-index: -1;
}

.filter-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--primary-navy);
    box-shadow: 0 0 10px rgba(95, 227, 208, 0.3);
}

.filter-btn:hover::before {
    width: 100%;
}

.filter-btn.active {
    background-color: var(--primary-navy);
    color: var(--white);
    border-color: var(--primary-navy);
    box-shadow: var(--glow-cyan);
}

.filter-btn.active::before {
    width: 100%;
    background: var(--accent-cyan);
}

/* Gallery Grid */
.gallery-section {
    padding: var(--spacing-xxl) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    aspect-ratio: 4/3;
    cursor: pointer;
    transition: all 0.4s ease;
    border: 3px solid transparent;
    box-shadow: var(--shadow-sm);
}

.gallery-item:hover {
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-xl), var(--glow-cyan);
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.4s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
    filter: brightness(0.8);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(13, 40, 71, 0.95) 0%, rgba(13, 40, 71, 0.7) 50%, transparent 100%);
    color: var(--white);
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

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

.gallery-overlay h3 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.gallery-overlay p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.view-btn {
    background-color: var(--accent-cyan);
    color: var(--primary-navy);
    padding: 8px 20px;
    border: 2px solid var(--accent-cyan);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all 0.3s ease;
    min-height: 44px;
    min-width: 44px;
}

.view-btn:hover {
    background-color: var(--accent-cyan-light);
    border-color: var(--accent-cyan-light);
    box-shadow: var(--glow-cyan);
    transform: scale(1.05);
}

/* Hidden items (filtered out) */
.gallery-item.hidden {
    display: none;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    overflow: auto;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.lightbox-caption {
    background-color: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    max-width: 600px;
}

.lightbox-caption h3 {
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

.lightbox-caption p {
    margin: 0;
    opacity: 0.9;
}

.lightbox-close {
    position: fixed;
    top: 20px;
    right: 40px;
    font-size: 50px;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    background: none;
    border: none;
    z-index: 10000;
    min-width: 44px;
    min-height: 44px;
}

.lightbox-close:hover {
    color: var(--accent-cyan);
    text-shadow: var(--glow-cyan);
}

.lightbox-prev,
.lightbox-next {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    font-size: 40px;
    color: var(--white);
    cursor: pointer;
    padding: 16px 20px;
    background-color: rgba(13, 40, 71, 0.7);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    border-radius: var(--radius-md);
    min-width: 44px;
    min-height: 44px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background-color: rgba(95, 227, 208, 0.9);
    border-color: var(--accent-cyan);
    color: var(--primary-navy);
    box-shadow: var(--glow-cyan);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

/* Loading State */
.gallery-grid.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Empty State */
.gallery-empty {
    text-align: center;
    padding: var(--spacing-xxl) 0;
    color: var(--gray-muted);
}

.gallery-empty svg {
    color: var(--accent-cyan);
    margin: 0 auto var(--spacing-md);
    filter: drop-shadow(var(--glow-cyan));
}