{% extends "base.html" %}

{% block title %}Key Changes - {{ title }}{% endblock %}

{% block head %}
<style>
:root {
    --hero-bg: {{ background_color }};
    --accent: {{ accent_color }};
}

.page-header {
    background: var(--hero-bg);
    padding: 3rem 0;
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header .subtitle {
    opacity: 0.9;
    font-size: 1.1rem;
}

.page-meta {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.page-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.content-section {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Category filter */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.category-filter {
    padding: 0.5rem 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    background: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.category-filter:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.category-filter.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Change items */
.changes-list {
    margin-top: 1rem;
}

.change-item {
    padding: 1.25rem;
    margin-bottom: 1rem;
    background: #f8fafc;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.change-type {
    display: inline-block;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.change-description {
    color: #475569;
    line-height: 1.7;
    font-family: Georgia, serif;
}

/* Different category colors */
.change-item[data-category="geographic"] { border-left-color: #10b981; }
.change-item[data-category="geographic"] .change-type { color: #10b981; }

.change-item[data-category="occupational"] { border-left-color: #f59e0b; }
.change-item[data-category="occupational"] .change-type { color: #f59e0b; }

.change-item[data-category="social"] { border-left-color: #ec4899; }
.change-item[data-category="social"] .change-type { color: #ec4899; }

.change-item[data-category="economic"] { border-left-color: #8b5cf6; }
.change-item[data-category="economic"] .change-type { color: #8b5cf6; }

.change-item[data-category="health"] { border-left-color: #ef4444; }
.change-item[data-category="health"] .change-type { color: #ef4444; }

.change-item[data-category="political"] { border-left-color: #6366f1; }
.change-item[data-category="political"] .change-type { color: #6366f1; }

.changes-count {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
</style>
{% endblock %}

{% block body %}
<header>
    <div class="container">
        <a href="{{ base_url }}/main.html" class="logo">{{ emoji }} {{ title }}</a>
        <nav>
            <div class="dropdown">
                <button class="dropdown-toggle active">Overview</button>
                <div class="dropdown-menu">
                    <a href="{{ base_url }}/overview/summary.html">📄 Finding Aid</a>
                    <a href="{{ base_url }}/overview/changes.html" class="active">🔄 Key Changes</a>
                    <a href="{{ base_url }}/overview/questions.html">❓ Research Questions</a>
                </div>
            </div>
            {% if enable_browse_dates %}
            <a href="{{ base_url }}/browse/dates.html">Browse by Date</a>
            {% endif %}
            {% if enable_browse_entities %}
            <a href="{{ base_url }}/browse/entities.html">Browse by Entity</a>
            {% endif %}
        </nav>
    </div>
</header>

<section class="page-header">
    <div class="container">
        <h1>🔄 Key Changes</h1>
        <p class="subtitle">Significant developments across {{ summary.document_count }} documents</p>
        <p class="page-meta">Generated {{ summary.generated_at }} using {{ summary.model }}</p>
    </div>
</section>

<main class="page-content" data-pagefind-ignore>
    <section class="content-section">
        {% if summary.key_changes %}
        <div class="category-filters">
            <button class="category-filter active" data-filter="all">All</button>
            <button class="category-filter" data-filter="geographic">🌍 Geographic</button>
            <button class="category-filter" data-filter="occupational">💼 Occupational</button>
            <button class="category-filter" data-filter="social">👥 Social</button>
            <button class="category-filter" data-filter="economic">💰 Economic</button>
            <button class="category-filter" data-filter="health">🏥 Health</button>
            <button class="category-filter" data-filter="political">🏛️ Political</button>
        </div>
        
        <p class="changes-count"><span id="visible-count">{{ summary.key_changes|length }}</span> of {{ summary.key_changes|length }} changes</p>
        
        <div class="changes-list" id="changes-list">
            {% for change in summary.key_changes %}
            {% set category = (change.category or change.type or 'general')|lower|replace(' ', '')|replace('/', '') %}
            <div class="change-item" data-category="{{ category }}">
                {% if change.category or change.type %}<span class="change-type">{{ change.category or change.type }}</span>{% endif %}
                <div class="change-description">{{ change.description }}</div>
            </div>
            {% endfor %}
        </div>
        {% else %}
        <p>No key changes identified. Run <code>flatfish summarize</code> to generate them.</p>
        {% endif %}
    </section>
</main>

<footer>
    <div class="container"></div>
</footer>

<script>
document.addEventListener('DOMContentLoaded', function() {
    const filters = document.querySelectorAll('.category-filter');
    const changesList = document.getElementById('changes-list');
    const visibleCount = document.getElementById('visible-count');
    
    filters.forEach(filter => {
        filter.addEventListener('click', function() {
            // Update active state
            filters.forEach(f => f.classList.remove('active'));
            this.classList.add('active');
            
            const category = this.dataset.filter;
            const items = changesList.querySelectorAll('.change-item');
            let count = 0;
            
            items.forEach(item => {
                const itemCategory = item.dataset.category || '';
                if (category === 'all' || itemCategory.includes(category)) {
                    item.style.display = '';
                    count++;
                } else {
                    item.style.display = 'none';
                }
            });
            
            if (visibleCount) {
                visibleCount.textContent = count;
            }
        });
    });
});
</script>
{% endblock %}