/* ===================================
   BLOG STYLES
   =================================== */

.blog-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    font-size: 1.125rem;
    color: var(--color-medium-gray);
}

/* Blog Controls */
.blog-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-medium-gray);
}

.search-box input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    border: 2px solid var(--color-light-gray);
    border-radius: var(--border-radius-small);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: var(--color-light-gray);
    color: var(--color-dark-blue);
    border: none;
    border-radius: 20px;
    font-family: var(--font-heading);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--color-white);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

/* Blog Card */
.blog-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-large);
}

.blog-card-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.1);
}

.blog-card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-small);
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-sm);
}

.blog-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.blog-card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark-blue);
}

.blog-card-title a {
    color: var(--color-dark-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-card-title a:hover {
    color: var(--color-primary);
}

.blog-card-excerpt {
    color: var(--color-medium-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.blog-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.blog-card-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-light-gray);
    color: var(--color-primary);
    font-size: var(--font-size-small);
    border-radius: 20px;
    font-weight: var(--font-weight-medium);
}

.blog-card-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.blog-card-link:hover {
    gap: 0.75rem;
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

.no-results i {
    font-size: 4rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-md);
}

.no-results p {
    font-size: 1.125rem;
    color: var(--color-medium-gray);
}

/* Loading State */
.loading {
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

.loading i {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.loading p {
    font-size: 1.125rem;
    color: var(--color-medium-gray);
}

/* Individual Blog Post Page */
.blog-post-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.blog-post-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.blog-post-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    font-size: var(--font-size-small);
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.blog-post-featured-image {
    max-width: 1000px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.blog-post-featured-image img {
    width: 100%;
    height: auto;
}

.blog-post-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
}

.blog-post-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.blog-post-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.blog-post-content p {
    margin-bottom: var(--spacing-md);
}

.blog-post-content ul,
.blog-post-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.blog-post-content li {
    margin-bottom: var(--spacing-sm);
}

.blog-post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--color-medium-gray);
}

.blog-post-content code {
    background: var(--color-light-gray);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.blog-post-content pre {
    background: var(--color-dark-blue);
    color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-small);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.blog-post-content pre code {
    background: none;
    padding: 0;
    color: var(--color-white);
}

/* Blog Post Tags */
.blog-post-tags {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-light-gray);
}

.blog-post-tags h4 {
    margin-bottom: var(--spacing-sm);
}

.blog-post-tags .tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-light-gray);
    color: var(--color-primary);
    font-size: var(--font-size-small);
    border-radius: 20px;
    margin-right: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

/* Share Buttons */
.blog-share {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg);
    background: var(--color-light-gray);
    border-radius: var(--border-radius);
    text-align: center;
}

.blog-share h4 {
    margin-bottom: var(--spacing-md);
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    border: none;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.share-btn.twitter {
    color: #1DA1F2;
}

.share-btn.linkedin {
    color: #0077B5;
}

/* Related Posts */
.related-posts {
    max-width: 1200px;
    margin: var(--spacing-section) auto;
}

.related-posts h3 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* Reading Progress Bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-primary);
    width: 0%;
    z-index: 9999;
    transition: width 0.1s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .blog-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: 100%;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-post-title {
        font-size: 2rem;
    }
    
    .blog-post-content {
        font-size: 1rem;
    }
    
    .share-buttons {
        flex-direction: column;
    }
}

/* ===================================
   BLOG FUNCTIONALITY
   =================================== */

document.addEventListener('DOMContentLoaded', function() {
  
  let allPosts = [];
  let currentFilter = 'all';
  
  // ========== LOAD BLOG POSTS ==========
  async function loadBlogPosts() {
    try {
      const response = await fetch('blog/posts.json');
      const data = await response.json();
      allPosts = data.posts;
      
      // Hide loading, show posts
      document.getElementById('loading').style.display = 'none';
      displayPosts(allPosts);
      
    } catch (error) {
      console.error('Error loading blog posts:', error);
      document.getElementById('loading').innerHTML = 
        '<i class="fas fa-exclamation-triangle"></i><p>Error loading posts. Please try again later.</p>';
    }
  }
  
  
  // ========== DISPLAY BLOG POSTS ==========
  function displayPosts(posts) {
    const blogGrid = document.getElementById('blog-grid');
    const noResults = document.getElementById('no-results');
    
    // Clear grid
    blogGrid.innerHTML = '';
    
    // Check if there are posts to display
    if (posts.length === 0) {
      blogGrid.style.display = 'none';
      noResults.style.display = 'block';
      return;
    }
    
    blogGrid.style.display = 'grid';
    noResults.style.display = 'none';
    
    // Create cards for each post
    posts.forEach(post => {
      const card = createBlogCard(post);
      blogGrid.appendChild(card);
    });
  }
  
  
  // ========== CREATE BLOG CARD ==========
  function createBlogCard(post) {
    const card = document.createElement('article');
    card.className = 'blog-card';
    card.setAttribute('data-category', post.category);
    
    card.innerHTML = `
      <div class="blog-card-image">
        <img src="${post.image}" alt="${post.title}" loading="lazy">
      </div>
      <div class="blog-card-content">
        <div class="blog-card-meta">
          <span><i class="fas fa-calendar"></i> ${formatDate(post.date)}</span>
          <span><i class="fas fa-clock"></i> ${post.readingTime}</span>
        </div>
        <h3 class="blog-card-title">
          <a href="blog/post.html?id=${post.id}">${post.title}</a>
        </h3>
        <p class="blog-card-excerpt">${post.excerpt}</p>
        <div class="blog-card-footer">
          <span class="blog-card-category">${post.category}</span>
          <a href="blog/post.html?id=${post.id}" class="blog-card-link">
            Read more <i class="fas fa-arrow-right"></i>
          </a>
        </div>
      </div>
    `;
    
    return card;
  }
  
  
  // ========== FORMAT DATE ==========
  function formatDate(dateString) {
    const options = { year: 'numeric', month: 'long', day: 'numeric' };
    const date = new Date(dateString);
    return date.toLocaleDateString('en-US', options);
  }
  
  
  // ========== FILTER POSTS BY CATEGORY ==========
  const filterButtons = document.querySelectorAll('.filter-btn');
  
  filterButtons.forEach(button => {
    button.addEventListener('click', function() {
      // Update active button
      filterButtons.forEach(btn => btn.classList.remove('active'));
      this.classList.add('active');
      
      // Get selected category
      currentFilter = this.getAttribute('data-category');
      
      // Filter and display posts
      filterPosts();
    });
  });
  
  
  // ========== SEARCH FUNCTIONALITY ==========
  const searchInput = document.getElementById('blog-search');
  
  if (searchInput) {
    searchInput.addEventListener('input', debounce(function() {
      filterPosts();
    }, 300));
  }
  
  
  // ========== FILTER POSTS (combines search and category) ==========
  function filterPosts() {
    const searchTerm = searchInput ? searchInput.value.toLowerCase() : '';
    
    let filteredPosts = allPosts;
    
    // Filter by category
    if (currentFilter !== 'all') {
      filteredPosts = filteredPosts.filter(post => post.category === currentFilter);
    }
    
    // Filter by search term
    if (searchTerm) {
      filteredPosts = filteredPosts.filter(post => {
        return post.title.toLowerCase().includes(searchTerm) ||
               post.excerpt.toLowerCase().includes(searchTerm) ||
               post.tags.some(tag => tag.toLowerCase().includes(searchTerm));
      });
    }
    
    displayPosts(filteredPosts);
  }
  
  
  // ========== DEBOUNCE FUNCTION ==========
  function debounce(func, wait) {
    let timeout;
    return function executedFunction(...args) {
      const later = () => {
        clearTimeout(timeout);
        func(...args);
      };
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
    };
  }
  
  
  // ========== INITIALIZE ==========
  // Only load posts if we're on the blog index page
  if (document.getElementById('blog-grid')) {
    loadBlogPosts();
  }
  
});


// ========== INDIVIDUAL BLOG POST PAGE FUNCTIONALITY ==========

// Load individual post content
async function loadBlogPost() {
  // Get post ID from URL
  const urlParams = new URLSearchParams(window.location.search);
  const postId = urlParams.get('id');
  
  if (!postId) {
    console.error('No post ID provided');
    return;
  }
  
  try {
    // Load posts.json to get post metadata
    const response = await fetch('../blog/posts.json');
    const data = await response.json();
    const post = data.posts.find(p => p.id === postId);
    
    if (!post) {
      console.error('Post not found');
      return;
    }
    
    // Update page title
    document.title = `${post.title} | Azeez Hamzat`;
    
    // Load and parse markdown content
    const contentResponse = await fetch(`../${post.content}`);
    const markdown = await contentResponse.text();
    
    // Convert markdown to HTML (using marked.js library)
    const htmlContent = marked.parse(markdown);
    
    // Populate page elements
    document.getElementById('post-title').textContent = post.title;
    document.getElementById('post-date').textContent = formatDate(post.date);
    document.getElementById('post-reading-time').textContent = post.readingTime;
    document.getElementById('post-category').textContent = post.category;
    document.getElementById('post-featured-image').src = `../${post.image}`;
    document.getElementById('post-featured-image').alt = post.title;
    document.getElementById('post-content').innerHTML = htmlContent;
    
    // Add tags
    const tagsContainer = document.getElementById('post-tags');
    post.tags.forEach(tag => {
      const tagSpan = document.createElement('span');
      tagSpan.className = 'tag';
      tagSpan.textContent = tag;
      tagsContainer.appendChild(tagSpan);
    });
    
    // Setup share buttons
    setupShareButtons(post.title);
    
    // Load related posts
    loadRelatedPosts(post.category, post.id);
    
  } catch (error) {
    console.error('Error loading blog post:', error);
  }
}

// Format date helper
function formatDate(dateString) {
  const options = { year: 'numeric', month: 'long', day: 'numeric' };
  const date = new Date(dateString);
  return date.toLocaleDateString('en-US', options);
}

// Setup share buttons
function setupShareButtons(postTitle) {
  const currentUrl = window.location.href;
  
  // Twitter share
  const twitterBtn = document.getElementById('share-twitter');
  if (twitterBtn) {
    twitterBtn.addEventListener('click', () => {
      const twitterUrl = `https://twitter.com/intent/tweet?text=${encodeURIComponent(postTitle)}&url=${encodeURIComponent(currentUrl)}&via=Azeez_A_Hamzat`;
      window.open(twitterUrl, '_blank', 'width=550,height=420');
    });
  }
  
  // LinkedIn share
  const linkedinBtn = document.getElementById('share-linkedin');
  if (linkedinBtn) {
    linkedinBtn.addEventListener('click', () => {
      const linkedinUrl = `https://www.linkedin.com/sharing/share-offsite/?url=${encodeURIComponent(currentUrl)}`;
      window.open(linkedinUrl, '_blank', 'width=550,height=420');
    });
  }
  
  // Copy link
  const copyBtn = document.getElementById('share-copy');
  if (copyBtn) {
    copyBtn.addEventListener('click', () => {
      navigator.clipboard.writeText(currentUrl).then(() => {
        const originalText = copyBtn.innerHTML;
        copyBtn.innerHTML = '<i class="fas fa-check"></i> Copied!';
        setTimeout(() => {
          copyBtn.innerHTML = originalText;
        }, 2000);
      });
    });
  }
}

// Load related posts
async function loadRelatedPosts(category, currentPostId) {
  try {
    const response = await fetch('../blog/posts.json');
    const data = await response.json();
    
    // Get posts from same category, excluding current post
    const relatedPosts = data.posts
      .filter(p => p.category === category && p.id !== currentPostId)
      .slice(0, 3);
    
    const relatedGrid = document.getElementById('related-posts-grid');
    
    if (relatedPosts.length === 0) {
      document.getElementById('related-posts-section').style.display = 'none';
      return;
    }
    
    relatedPosts.forEach(post => {
      const card = document.createElement('article');
      card.className = 'blog-card';
      card.innerHTML = `
        <div class="blog-card-image">
          <img src="../${post.image}" alt="${post.title}" loading="lazy">
        </div>
        <div class="blog-card-content">
          <div class="blog-card-meta">
            <span><i class="fas fa-calendar"></i> ${formatDate(post.date)}</span>
          </div>
          <h3 class="blog-card-title">
            <a href="post.html?id=${post.id}">${post.title}</a>
          </h3>
          <p class="blog-card-excerpt">${post.excerpt}</p>
          <a href="post.html?id=${post.id}" class="blog-card-link">
            Read more <i class="fas fa-arrow-right"></i>
          </a>
        </div>
      `;
      relatedGrid.appendChild(card);
    });
    
  } catch (error) {
    console.error('Error loading related posts:', error);
  }
}

// Initialize individual post page if on post page
if (window.location.pathname.includes('post.html')) {
  document.addEventListener('DOMContentLoaded', loadBlogPost);
}


/* ===================================
   BLOG POST TABLE STYLES
   Add this to css/blog.css
   =================================== */

/* Table Container */
.blog-post-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--spacing-xl) 0;
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

/* Table Headers */
.blog-post-content thead {
    background: var(--gradient-primary);
}

.blog-post-content thead th {
    padding: var(--spacing-lg);
    text-align: left;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    border: none;
}

/* Table Body */
.blog-post-content tbody tr {
    border-bottom: 1px solid var(--color-light-gray);
    transition: background-color var(--transition-fast);
}

.blog-post-content tbody tr:last-child {
    border-bottom: none;
}

.blog-post-content tbody tr:hover {
    background-color: var(--gradient-hero);
}

.blog-post-content tbody td {
    padding: var(--spacing-lg);
    vertical-align: top;
    line-height: 1.7;
    color: var(--color-dark-blue);
}

/* Bold labels in table cells */
.blog-post-content tbody td strong {
    display: block;
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

/* Separator after label */
.blog-post-content tbody td strong::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background: var(--color-primary);
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

/* Column divider */
.blog-post-content tbody td:first-child {
    border-right: 2px solid var(--color-light-gray);
    background-color: rgba(102, 126, 234, 0.02);
}

/* Responsive Table */
@media (max-width: 768px) {
    .blog-post-content table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .blog-post-content thead th {
        font-size: 1.1rem;
        padding: var(--spacing-md);
    }
    
    .blog-post-content tbody td {
        padding: var(--spacing-md);
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    /* Stack table on very small screens */
    .blog-post-content table,
    .blog-post-content thead,
    .blog-post-content tbody,
    .blog-post-content tr,
    .blog-post-content td {
        display: block;
        width: 100%;
    }
    
    .blog-post-content thead {
        display: none;
    }
    
    .blog-post-content tbody tr {
        margin-bottom: var(--spacing-lg);
        border: 1px solid var(--color-light-gray);
        border-radius: var(--border-radius);
        overflow: hidden;
    }
    
    .blog-post-content tbody td {
        border-right: none !important;
        border-bottom: 1px solid var(--color-light-gray);
        background-color: transparent !important;
    }
    
    .blog-post-content tbody td:last-child {
        border-bottom: none;
    }
    
    /* Add labels for mobile */
    .blog-post-content tbody td:first-child::before {
        content: 'Human Intelligence';
        display: block;
        font-weight: var(--font-weight-bold);
        color: var(--color-white);
        background: var(--gradient-primary);
        padding: var(--spacing-sm);
        margin: calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1) var(--spacing-sm);
    }
    
    .blog-post-content tbody td:last-child::before {
        content: 'Machine Intelligence';
        display: block;
        font-weight: var(--font-weight-bold);
        color: var(--color-white);
        background: var(--gradient-primary);
        padding: var(--spacing-sm);
        margin: calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1) var(--spacing-sm);
    }
}