{% load wagtailimages_tags %}
{% load wagtailcore_tags wagtailimages_tags %}
{% block content %}
<div class="gallery-modern-block">
    <header>
        <div class="container">
            <h2 class="h2-gallery">{{ value.titulo_secao }}</h2>
            <p class="subtitle">{{ value.subtitulo_secao }}</p>
        </div>
    </header>
    
    <div class="container">
        <!-- Filtros -->
        <div class="filters-container">
            <div class="filters" id="filters-container-{{ id }}">
                <button class="filter-btn active" 
                        type="button"
                        data-filter="all">Todos</button>
                {% for categoria in categorias %}
                <button class="filter-btn" 
                        type="button"
                        data-filter="{{ categoria.slug }}">{{ categoria.nome }}</button>
                {% endfor %}
            </div>
        </div>
        
        <!-- Gallery Masonry -->
        <div class="gallery-masonry" id="carousel-gallery-{{ id }}">
            {% for item in itens_ordenados %}
            <div class="carousel-item {% cycle 'size-large' 'size-medium' 'size-small' 'size-medium' 'size-tall' 'size-medium' %}" 
                 data-category="{{ item.categoria|slugify }}">
                {% image item.imagem fill-1200x800 as img %}
                <img src="{{ img.url }}" 
                     alt="{% if item.titulo %}{{ item.titulo }}{% else %}Imagem da galeria {{ forloop.counter }}{% endif %}"
                     loading="{% if forloop.counter <= 3 %}eager{% else %}lazy{% endif %}">
                
                <div class="overlay">
                    <div class="overlay-content">
                        {% if item.titulo %}
                        <h3>{{ item.titulo }}</h3>
                        {% endif %}
                        {% if item.data %}
                        <p>{{ item.data|date:"d/m/Y" }}</p>
                        {% endif %}
                        <button class="view-btn" onclick="openLightbox{{ id }}({{ forloop.counter0 }})">
                            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                                <path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"></path>
                                <circle cx="12" cy="12" r="3"></circle>
                            </svg>
                            Ver
                        </button>
                    </div>
                </div>
                
                <!-- Informações para JS -->
                <div class="item-info sr-only">
                    <span class="item-title">{{ item.titulo|default:"Sem título" }}</span>
                    <span class="item-date">{{ item.data|date:"d/m/Y"|default:"" }}</span>
                </div>
            </div>
            {% endfor %}
        </div>
        
        <!-- Navegação -->
        <div class="carousel-nav">
            <button type="button" id="prev-btn-{{ id }}" onclick="prevSlide{{ id }}()">
                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                    <path d="M15 18l-6-6 6-6"/>
                </svg>
            </button>
            <button type="button" id="next-btn-{{ id }}" onclick="nextSlide{{ id }}()">
                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                    <path d="M9 18l6-6-6-6"/>
                </svg>
            </button>
        </div>
        
        <!-- Estado vazio -->
        <div class="empty-state" id="empty-state-{{ id }}" style="display: none;">
            <div class="empty-icon">📷</div>
            <p>Nenhuma imagem encontrada nesta categoria</p>
        </div>
    </div>
</div>

<!-- Lightbox -->
<div class="lightbox" id="lightbox-{{ id }}">
    <div class="lightbox-backdrop" onclick="closeLightbox{{ id }}()"></div>
    <div class="lightbox-content">
        <button class="lightbox-close" onclick="closeLightbox{{ id }}()">
            <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                <line x1="18" y1="6" x2="6" y2="18"></line>
                <line x1="6" y1="6" x2="18" y2="18"></line>
            </svg>
        </button>
        
        <button class="lightbox-nav prev" onclick="prevImage{{ id }}()">
            <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                <path d="M15 18l-6-6 6-6"/>
            </svg>
        </button>
        
        <div class="lightbox-image-container">
            <img id="lightbox-img-{{ id }}" src="" alt="Imagem da galeria">
            <div class="lightbox-info">
                <h3 id="lightbox-title-{{ id }}"></h3>
                <p id="lightbox-date-{{ id }}"></p>
            </div>
        </div>
        
        <button class="lightbox-nav next" onclick="nextImage{{ id }}()">
            <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                <path d="M9 18l6-6-6-6"/>
            </svg>
        </button>
    </div>
</div>

<style>
/* ==================== BASE ==================== */
.gallery-modern-block {
    --primary: {{ value.cor_principal|default:"#2563eb" }};
    --secondary: {{ value.cor_secundaria|default:"#3b82f6" }};
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #f8fafc;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.15);
    --radius: 16px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-modern-block {
    background: var(--bg);
    padding: 5rem 0;
    min-height: 70vh;
    position: relative;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
}

/* ==================== HEADER ==================== */
header {
    text-align: center;
    margin-bottom: 4rem;
}

.h2-gallery {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 1rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ==================== FILTROS ==================== */
.filters-container {
    margin-bottom: 3rem;
    display: flex;
    justify-content: center;
}

.filters {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    background: var(--white);
    border: 2px solid #e2e8f0;
    border-radius: 50px;
    padding: 0.875rem 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: var(--shadow);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ==================== LAYOUT MASONRY ==================== */
.gallery-masonry {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-auto-rows: 120px;
    gap: 1rem;
    margin-bottom: 3rem;
    position: relative;
}

.carousel-item {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: slideInUp 0.6s ease-out forwards;
}

/* Tamanhos dinâmicos para layout masonry */
.carousel-item.size-large {
    grid-column: span 3;
    grid-row: span 4;
}

.carousel-item.size-medium {
    grid-column: span 2;
    grid-row: span 3;
}

.carousel-item.size-small {
    grid-column: span 2;
    grid-row: span 2;
}

.carousel-item.size-tall {
    grid-column: span 2;
    grid-row: span 5;
}

.carousel-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: var(--transition);
    display: block;
}

.carousel-item:hover img {
    transform: scale(1.1);
}

/* ==================== OVERLAY ==================== */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(0,0,0,0.1) 0%,
        rgba(0,0,0,0.3) 50%,
        rgba(0,0,0,0.8) 100%
    );
    display: flex;
    align-items: flex-end;
    opacity: 0;
    transition: var(--transition);
}

.carousel-item:hover .overlay {
    opacity: 1;
}

.overlay-content {
    padding: 1.5rem;
    color: var(--white);
    width: 100%;
}

.overlay-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.overlay-content p {
    font-size: 0.85rem;
    opacity: 0.9;
    margin-bottom: 1rem;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.view-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    padding: 0.5rem 1rem;
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-shadow: none;
}

.view-btn:hover {
    background: rgba(255,255,255,0.35);
    transform: translateY(-2px);
}

/* ==================== NAVEGAÇÃO ==================== */
.carousel-nav {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    padding: 0 1rem;
    z-index: 20;
}

.carousel-nav button {
    background: var(--white);
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    pointer-events: auto;
    color: var(--text);
}

.carousel-nav button:hover {
    background: var(--primary);
    color: var(--white);
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* ==================== ESTADO VAZIO ==================== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.125rem;
    margin: 0;
}

/* ==================== LIGHTBOX ==================== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
}

.lightbox-content {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.lightbox-close:hover {
    background: rgba(255,255,255,0.2);
    transform: scale(1.1);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.lightbox-nav:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-nav.prev {
    left: 2rem;
}

.lightbox-nav.next {
    right: 2rem;
}

.lightbox-image-container {
    max-width: 90vw;
    max-height: 90vh;
    text-align: center;
}

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

.lightbox-info {
    color: var(--white);
    margin-top: 1rem;
    max-width: 600px;
}

.lightbox-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.lightbox-info p {
    font-size: 1rem;
    opacity: 0.8;
    margin: 0;
}

/* ==================== UTILITÁRIOS ==================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ==================== ANIMAÇÕES ==================== */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.carousel-item:nth-child(1) { animation-delay: 0.1s; }
.carousel-item:nth-child(2) { animation-delay: 0.15s; }
.carousel-item:nth-child(3) { animation-delay: 0.2s; }
.carousel-item:nth-child(4) { animation-delay: 0.25s; }
.carousel-item:nth-child(5) { animation-delay: 0.3s; }
.carousel-item:nth-child(6) { animation-delay: 0.35s; }

/* ==================== RESPONSIVO ==================== */
@media (max-width: 1200px) {
    .gallery-masonry {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .carousel-item.size-large {
        grid-column: span 2;
        grid-row: span 3;
    }
}

@media (max-width: 768px) {
    .gallery-modern-block {
        padding: 3rem 0;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .h2-gallery {
        font-size: 2.5rem;
    }
    
    .gallery-masonry {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .carousel-item.size-large,
    .carousel-item.size-medium,
    .carousel-item.size-small,
    .carousel-item.size-tall {
        grid-column: span 1;
        grid-row: span 2;
    }
    
    .filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .carousel-nav button {
        width: 50px;
        height: 50px;
    }
    
    .overlay-content {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .gallery-masonry {
        grid-template-columns: 1fr;
    }
    
    .carousel-item {
        grid-row: span 3 !important;
    }
    
    .carousel-nav {
        display: none;
    }
}
</style>

<script>
// Variáveis globais para esta instância
let currentLightboxIndex{{ id }} = 0;
let currentFilter{{ id }} = 'all';
let allItems{{ id }} = [];

// Inicializar quando DOM estiver pronto
document.addEventListener('DOMContentLoaded', function() {
    initGallery{{ id }}();
});

function initGallery{{ id }}() {
    // Coletar todos os itens
    const items = document.querySelectorAll('#carousel-gallery-{{ id }} .carousel-item');
    allItems{{ id }} = Array.from(items).map((item, index) => {
        const img = item.querySelector('img');
        const titleElement = item.querySelector('.item-title');
        const dateElement = item.querySelector('.item-date');
        
        return {
            src: img.src,
            title: titleElement ? titleElement.textContent : 'Sem título',
            date: dateElement ? dateElement.textContent : '',
            category: item.getAttribute('data-category'),
            element: item,
            index: index
        };
    });
    
    // Configurar filtros
    setupFilters{{ id }}();
    
    // Configurar eventos de teclado
    setupKeyboardEvents{{ id }}();
    
    console.log('Galeria inicializada com', allItems{{ id }}.length, 'itens');
}

function setupFilters{{ id }}() {
    const filterButtons = document.querySelectorAll('#filters-container-{{ id }} .filter-btn');
    
    filterButtons.forEach(button => {
        button.addEventListener('click', () => {
            // Remover classe ativa
            filterButtons.forEach(btn => btn.classList.remove('active'));
            
            // Adicionar classe ativa
            button.classList.add('active');
            
            // Aplicar filtro
            const filter = button.getAttribute('data-filter');
            currentFilter{{ id }} = filter;
            applyFilter{{ id }}(filter);
        });
    });
}

function applyFilter{{ id }}(filter) {
    const gallery = document.getElementById('carousel-gallery-{{ id }}');
    const emptyState = document.getElementById('empty-state-{{ id }}');
    let visibleCount = 0;
    
    allItems{{ id }}.forEach(item => {
        const shouldShow = filter === 'all' || item.category === filter;
        
        if (shouldShow) {
            item.element.style.display = '';
            visibleCount++;
        } else {
            item.element.style.display = 'none';
        }
    });
    
    // Mostrar/ocultar estado vazio
    if (visibleCount === 0) {
        gallery.style.display = 'none';
        emptyState.style.display = 'block';
    } else {
        gallery.style.display = '';
        emptyState.style.display = 'none';
    }
    
    console.log('Filtro aplicado:', filter, '- Itens visíveis:', visibleCount);
}

function prevSlide{{ id }}() {
    const visibleItems = getVisibleItems{{ id }}();
    if (visibleItems.length > 0) {
        currentLightboxIndex{{ id }} = (currentLightboxIndex{{ id }} - 1 + visibleItems.length) % visibleItems.length;
    }
}

function nextSlide{{ id }}() {
    const visibleItems = getVisibleItems{{ id }}();
    if (visibleItems.length > 0) {
        currentLightboxIndex{{ id }} = (currentLightboxIndex{{ id }} + 1) % visibleItems.length;
    }
}

function getVisibleItems{{ id }}() {
    return allItems{{ id }}.filter(item => {
        return currentFilter{{ id }} === 'all' || item.category === currentFilter{{ id }};
    });
}

function openLightbox{{ id }}(index) {
    const lightbox = document.getElementById('lightbox-{{ id }}');
    currentLightboxIndex{{ id }} = index;
    
    updateLightboxImage{{ id }}();
    
    lightbox.classList.add('active');
    document.body.style.overflow = 'hidden';
    
    console.log('Lightbox aberto, índice:', index);
}

function closeLightbox{{ id }}() {
    const lightbox = document.getElementById('lightbox-{{ id }}');
    lightbox.classList.remove('active');
    document.body.style.overflow = '';
    
    console.log('Lightbox fechado');
}

function updateLightboxImage{{ id }}() {
    const img = document.getElementById('lightbox-img-{{ id }}');
    const title = document.getElementById('lightbox-title-{{ id }}');
    const date = document.getElementById('lightbox-date-{{ id }}');
    
    const visibleItems = getVisibleItems{{ id }}();
    const currentItem = visibleItems[currentLightboxIndex{{ id }}];
    
    if (currentItem) {
        img.src = currentItem.src;
        img.alt = currentItem.title;
        title.textContent = currentItem.title;
        date.textContent = currentItem.date;
        
        console.log('Imagem atualizada:', currentItem.title);
    }
}

function prevImage{{ id }}() {
    const visibleItems = getVisibleItems{{ id }}();
    if (visibleItems.length > 0) {
        currentLightboxIndex{{ id }} = (currentLightboxIndex{{ id }} - 1 + visibleItems.length) % visibleItems.length;
        updateLightboxImage{{ id }}();
    }
}

function nextImage{{ id }}() {
    const visibleItems = getVisibleItems{{ id }}();
    if (visibleItems.length > 0) {
        currentLightboxIndex{{ id }} = (currentLightboxIndex{{ id }} + 1) % visibleItems.length;
        updateLightboxImage{{ id }}();
    }
}

function setupKeyboardEvents{{ id }}() {
    document.addEventListener('keydown', (e) => {
        const lightbox = document.getElementById('lightbox-{{ id }}');
        
        if (lightbox.classList.contains('active')) {
            switch(e.key) {
                case 'Escape':
                    closeLightbox{{ id }}();
                    break;
                case 'ArrowLeft':
                    prevImage{{ id }}();
                    break;
                case 'ArrowRight':
                    nextImage{{ id }}();
                    break;
            }
        }
    });
}
</script>
{% endblock %}