{{ define "main" }}
<div id="pjax-container">
  <div class="post-content" itemprop="articleBody">
    {{ .Content }}
    <div id="friend-circle-container" class="friend-circle-list">
      <div class="loading-container">
        <div class="loading-spinner"></div>
        <p>正在探索朋友们的新动态...</p>
      </div>
    </div>
  </div>

  <style>
    /* Container Layout */
    .friend-circle-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px; /* Tighter gap to make cards wider */
      margin-top: 20px;
      padding: 0; /* Remove padding to maximize width */
      width: 100%;
    }

    /* Mobile Layout */
    @media (max-width: 768px) {
      .friend-circle-list {
        grid-template-columns: 1fr;
        gap: 10px;
      }
    }

    /* Card Style - Refined based on User Request */
    .fc-item {
      display: flex;
      flex-direction: column;
      padding: 20px;
      border-radius: 10px;
      position: relative;
      height: 160px;
      justify-content: space-between;
      background: rgba(255, 255, 255, 0.4);
      backdrop-filter: blur(16px) saturate(180%);
      -webkit-backdrop-filter: blur(16px) saturate(180%);
      border: 1px solid #111827;
      box-shadow: none;
      transition:
        transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1),
        box-shadow 0.3s ease,
        background-color 0.3s ease,
        border-color 0.3s ease;
      will-change: transform;
      text-decoration: none;
      transform: translateZ(0); /* Enable GPU acceleration */
      overflow: hidden; /* 防止背景图溢出 */
    }

    .friend-circle-list a {
      text-decoration: none;
    }

    /* Light Mode Override - if theme is light, keep it readable but consistent layout */
    /* Assuming the user wants the dark look as shown in the reference, we prioritize that feel 
           or make it adapt. Let's make it adapt but keep the structure. */
    :root {
      /* --fc-bg: rgba(255, 255, 255, 0.8); */
      --fc-text: #333;
      --fc-meta-bg: rgba(0, 0, 0, 0.05);
      /* --fc-border: rgba(0, 0, 0, 0.05); */
    }

    [data-theme="dark"] {
      /* --fc-bg: rgba(35, 35, 35, 0.8); */
      --fc-text: #fff;
      --fc-meta-bg: rgba(255, 255, 255, 0.1);
      /* --fc-border: rgba(255, 255, 255, 0.1); */
    }

    /* 
        .fc-item {
            background: var(--fc-bg);
            border-color: var(--fc-border);
        } 
        */

    /* UK Style Animation & Hover */
    /* 优化后的 hover 效果 */
    .fc-item:hover {
      /* 位移+缩放：微调数值，更克制不夸张 */
      transform: translateY(-6px) scale(1.015);
      /* 阴影：分层阴影，更有立体感（主阴影+柔和光晕） */
      box-shadow:
        0 12px 28px rgba(0, 0, 0, 0.1),
        /* 主阴影：缩小范围，降低不透明度 */ 0 2px 8px rgba(0, 0, 0, 0.06); /* 次级光晕：增加柔和感 */
      /* 背景：轻微提亮，保留通透感 */
      background: rgba(255, 255, 255, 0.7);
      /* 边框：轻微加亮，避免纯黑太突兀 */
      border-color: #1a1a1a;
      /* 层级：保持原有值 */
      z-index: 10;
      /* 光标：交互提示 */
      cursor: pointer;
    }

    /* 可选：点击回弹效果，增强交互反馈 */
    .fc-item:active {
      transform: translateY(-3px) scale(1.005);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
      transition: all 0.15s ease;
    }

    /* Top: Title */
    .fc-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--fc-text);
      text-decoration: none;
      line-height: 1.4;
      z-index: 2;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-right: 60px; /* Space for the image */
    }

    .fc-item:hover .fc-title {
      color: #000000;
    }

    /* Background Image (Decorative) */
    .fc-bg-image {
      position: absolute;
      right: -20px;
      bottom: -20px;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      object-fit: cover;
      opacity: 0.15;
      transition: all 0.5s ease;
      z-index: 0;
      pointer-events: none;
      filter: grayscale(20%);
    }

    .fc-item:hover .fc-bg-image {
      opacity: 0.3;
      transform: scale(1.1) rotate(deg);
      filter: grayscale(0%);
    }

    /* Bottom Row: Author Pill & Date */
    .fc-bottom {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      z-index: 2;
    }

    /* Author Pill */
    .fc-author-pill {
      display: flex;
      align-items: center;
      background: var(--fc-meta-bg);
      padding: 4px 10px 4px 4px;
      border-radius: 20px;
      transition: background 0.3s;
    }

    .fc-item:hover .fc-author-pill {
      background: rgba(52, 152, 219, 0.1);
    }

    .fc-avatar {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      object-fit: cover;
      margin-right: 8px;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .fc-author-name {
      font-size: 13px;
      font-weight: 600;
      color: var(--fc-text);
      opacity: 0.9;
    }

    /* Date */
    .fc-date {
      font-size: 12px;
      color: var(--fc-text);
      opacity: 0.6;
      display: flex;
      align-items: center;
    }

    .fc-date i {
      margin-right: 4px;
      font-size: 11px;
    }

    /* FontAwesome fallback if not available, simple calendar icon via CSS or Unicode */
    .fc-icon-calendar::before {
      content: "\f133";
      font-family: "Font Awesome 5 Free", "FontAwesome";
      font-weight: 900;
    }

    /* Loading Animation */
    .loading-container {
      grid-column: 1 / -1;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 60px;
      color: #888;
    }

    .loading-spinner {
      width: 40px;
      height: 40px;
      border: 3px solid rgba(127, 127, 127, 0.2);
      border-radius: 50%;
      border-top-color: #3498db;
      animation: spin 1s ease-in-out infinite;
      margin-bottom: 15px;
    }

    /* Dark Mode Specific Adjustments to match the reference exactly */
    [data-theme="dark"] .fc-item {
      background: rgba(
        35,
        35,
        35,
        0.65
      ); /* More transparent for glass effect */
      box-shadow: none;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    [data-theme="dark"] .fc-author-pill {
      background: #1a1a1a;
      border: 1px solid #333;
    }

    [data-theme="dark"] .fc-bg-image {
      opacity: 0.2;
    }

    [data-theme="dark"] .fc-item:hover {
      background: rgba(60, 60, 60, 0.85);
      border-color: rgba(255, 255, 255, 0.3);
    }

    [data-theme="dark"] .fc-item:hover .fc-title {
      color: #ffffff;
    }

    /* Removed unused fadeInUp to keep clean, utilizing ukFadeInUp instead */

    @keyframes spin {
      to {
        transform: rotate(360deg);
      }
    }
    /* Load More Button */
    .fc-load-more-btn {
      grid-column: 1 / -1;
      padding: 5px 30px;
      margin: 30px auto 10px;
      background: #000; /* Black background */
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 30px;
      color: #fff;
      cursor: pointer;
      font-size: 14px;
      transition: all 0.3s ease;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .fc-load-more-btn:hover {
      background: #333;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    [data-theme="dark"] .fc-load-more-btn {
      background: #000;
      border-color: rgba(255, 255, 255, 0.2);
    }

    [data-theme="dark"] .fc-load-more-btn:hover {
      background: #222;
    }

    /* Artalk Dark Mode Adjustment */
    [data-theme="dark"] .artalk .atk-main-editor {
      border: 1px solid rgba(255, 255, 255, 0.1) !important;
    }

    /* Friend Circle Tooltip Card */
    .fc-tooltip {
      position: fixed;
      z-index: 9999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(0, 0, 0, 0.1);
      border-radius: 12px;
      padding: 16px;
      width: 300px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
      pointer-events: none;
      opacity: 0;
      transform: scale(0.95) translateY(10px);
      transition: opacity 0.2s ease, transform 0.2s ease;
      font-size: 14px;
      line-height: 1.6;
      color: #333;
      display: none; /* Hidden by default */
    }

    .fc-tooltip.is-visible {
      opacity: 1;
      transform: scale(1) translateY(0);
      display: block;
    }

    .fc-tooltip-title {
      font-weight: 700;
      margin-bottom: 8px;
      font-size: 15px;
      color: #000;
      border-bottom: 1px solid rgba(0,0,0,0.05);
      padding-bottom: 6px;
    }

    .fc-tooltip-content {
      color: #555;
      text-align: justify;
      display: -webkit-box;
      -webkit-line-clamp: 6; /* Limit lines */
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    [data-theme="dark"] .fc-tooltip {
      background: rgba(35, 35, 35, 0.95);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: #eee;
    }

    [data-theme="dark"] .fc-tooltip-title {
      color: #fff;
      border-bottom-color: rgba(255,255,255,0.1);
    }

    [data-theme="dark"] .fc-tooltip-content {
      color: #ccc;
    }
  </style>

  <div id="fc-tooltip" class="fc-tooltip">
    <div class="fc-tooltip-title"></div>
    <div class="fc-tooltip-content"></div>
  </div>

  <script>
    // 使用全局对象管理友圈逻辑
    window.FriendCircle = {
      allPosts: [],
      currentIndex: 0,
      BATCH_SIZE: 10,

      timeAgo: function (dateStr) {
        const date = new Date(dateStr);
        const year = date.getFullYear();
        const month = String(date.getMonth() + 1).padStart(2, "0");
        const day = String(date.getDate()).padStart(2, "0");
        return `${year}-${month}-${day}`;
      },

      renderPosts: function (posts) {
        const container = document.getElementById("friend-circle-container");
        if (!container) return;

        const existingBtn = document.getElementById("fc-load-more-btn");
        if (existingBtn) existingBtn.remove();

        let html = "";
        posts.forEach((post, index) => {
          const dateStr = this.timeAgo(post.date);
          // 减少延迟时间，避免动画积压
          const delay = index * 0.05;
          // 背景图固定使用头像，以获得一致的装饰效果
          const bgImageSrc = post.avatar;
          // Escape quotes for data attribute
          const description = post.description ? post.description.replace(/"/g, '&quot;') : '';

          html += `
                        <a href="${post.link}" target="_blank" class="fc-item uk-animation-slide-bottom-small" style="animation-delay: ${delay}s" data-desc="${description}" data-title="${post.title}">
                            <div class="fc-title" title="${post.title}">${post.title}</div>
                            <img src="${bgImageSrc}" class="fc-bg-image" loading="lazy" onerror="this.style.opacity=0">
                            <div class="fc-bottom">
                                <div class="fc-author-pill">
                                    <img src="${post.avatar}" class="fc-avatar" loading="lazy" onerror="this.src='https://cravatar.cn/avatar/default?s=50'">
                                    <span class="fc-author-name">${post.author}</span>
                                </div>
                                <div class="fc-date">
                                    <i class="ri-calendar-line"></i> ${dateStr}
                                </div>
                            </div>
                        </a>
                    `;
        });

        container.insertAdjacentHTML("beforeend", html);

        if (this.currentIndex < this.allPosts.length) {
          const btn = document.createElement("button");
          btn.id = "fc-load-more-btn";
          btn.className = "fc-load-more-btn";
          btn.innerText = "加载更多";
          btn.onclick = () => this.loadMore();
          container.appendChild(btn);
        } else {
          if (window.fcUpdateTime) {
            const footer = document.createElement("div");
            footer.style.cssText =
              "grid-column: 1 / -1; text-align: center; margin-top: 20px; font-size: 12px; color: #999; opacity: 0.6;";
            footer.innerText = `最近更新: ${window.fcUpdateTime}`;
            container.appendChild(footer);
          }
        }
      },

      loadMore: function () {
        const nextBatch = this.allPosts.slice(
          this.currentIndex,
          this.currentIndex + this.BATCH_SIZE,
        );
        this.currentIndex += this.BATCH_SIZE;
        // 使用 requestAnimationFrame 优化渲染性能
        requestAnimationFrame(() => {
          this.renderPosts(nextBatch);
        });
      },

      initTooltip: function() {
        if (this.tooltipInitialized) return;
        this.tooltipInitialized = true;

        const tooltip = document.getElementById('fc-tooltip');
        const titleEl = tooltip.querySelector('.fc-tooltip-title');
        const contentEl = tooltip.querySelector('.fc-tooltip-content');
        const container = document.getElementById('friend-circle-container');

        if (!tooltip || !container) return;

        // Move tooltip to body to prevent clipping by overflow:hidden or transforms
        if (tooltip.parentNode !== document.body) {
            document.body.appendChild(tooltip);
        }

        // Cleanup tooltip when navigating away (PJAX)
        const cleanup = () => {
            if (tooltip && tooltip.parentNode === document.body) {
                tooltip.remove();
            }
            document.removeEventListener('pjax:send', cleanup);
        };
        document.addEventListener('pjax:send', cleanup);

        const updateTooltip = (e) => {
            // Disable tooltip on mobile devices
            if (window.innerWidth <= 768) return;

            const item = e.target.closest('.fc-item');
            if (item) {
                const desc = item.getAttribute('data-desc');
                const title = item.getAttribute('data-title');
                
                if (desc) {
                    titleEl.innerText = title;
                    contentEl.innerText = desc;
                    tooltip.classList.add('is-visible');
                    
                    const tooltipWidth = tooltip.offsetWidth;
                    const tooltipHeight = tooltip.offsetHeight;
                    const winWidth = window.innerWidth;
                    const winHeight = window.innerHeight;
                    const gap = 15; // Gap between cursor and tooltip
                    
                    let left = e.clientX + gap;
                    let top = e.clientY + gap;
                    
                    // Horizontal Logic
                    if (left + tooltipWidth > winWidth - gap) {
                        // Flip to left
                        left = e.clientX - tooltipWidth - gap;
                        
                        // If flipping makes it go off-screen to the left (e.g. wide tooltip, cursor near left)
                        if (left < gap) {
                            // Clamp to left edge
                            left = gap;
                        }
                    }

                    // Vertical Logic
                    if (top + tooltipHeight > winHeight - gap) {
                        // Flip to top
                        top = e.clientY - tooltipHeight - gap;
                        
                        // If flipping makes it go off-screen to the top
                        if (top < gap) {
                            // Clamp to top edge
                            top = gap;
                        }
                    }
                    
                    tooltip.style.left = `${left}px`;
                    tooltip.style.top = `${top}px`;
                } else {
                    tooltip.classList.remove('is-visible');
                }
            } else {
                tooltip.classList.remove('is-visible');
            }
        };

        container.addEventListener('mousemove', updateTooltip);
        container.addEventListener('mouseleave', () => {
             tooltip.classList.remove('is-visible');
        });
      },

      init: function () {
        const container = document.getElementById("friend-circle-container");
        if (!container) return;
        
        this.initTooltip();

        // 防止重复初始化导致掉帧
        if (this.isFetching) return;
        this.isFetching = true;

        fetch("/json/friend_circle_data.json?t=" + new Date().getTime())
          .then((res) => {
            if (!res.ok) throw new Error("Network response was not ok");
            return res.json();
          })
          .then((data) => {
            if (!data.posts || data.posts.length === 0) {
              container.innerHTML =
                '<div class="empty" style="grid-column: 1/-1; text-align:center; padding:20px;">暂无动态</div>';
              return;
            }

            this.allPosts = data.posts;
            window.fcUpdateTime = new Date(data.updated).toLocaleString();
            this.currentIndex = 0;
            container.innerHTML = "";
            this.loadMore();
          })
          .catch((err) => {
            console.error("Friend Circle Error:", err);
            container.innerHTML =
              '<div class="error" style="grid-column: 1/-1; text-align:center; padding:20px; color:#d9534f;">加载失败，请稍后刷新重试</div>';
          })
          .finally(() => {
            this.isFetching = false;
          });
      },
    };

    // 移除多余的 pjax:complete 监听，因为脚本在 PJAX 容器内，每次导航都会重新执行
    // 避免了重复触发 init 导致的性能问题

    // 立即执行初始化
    if (document.readyState === "loading") {
      document.addEventListener("DOMContentLoaded", () =>
        window.FriendCircle.init(),
      );
    } else {
      window.FriendCircle.init();
    }
  </script>
</div>
{{ end }}