<affitrackr-widget></affitrackr-widget>

<style>
    /* ── Reset scope: tất cả styles dùng prefix .affi- để tránh xung đột CMS ── */

    .affi-widget {
        display: block;
        font-family: sans-serif;
        box-sizing: border-box;
        text-align: left;
        overflow: hidden;          /* clip mọi content thừa, chặn horizontal scroll */
        max-width: 100%;           /* không bao giờ vượt quá width của cha */
        /* ── Cấu hình giao diện ── */
        background: #ffffff;       /* BG_COLOR: màu nền widget */
        border-radius: 6px;
        margin: 20px 0;
        padding: 16px;             /* WIDGET_PADDING: padding nội dung bên trong */
    }

    /* ── Override .adv-center khi chứa widget ──
       Dùng :has() để target trực tiếp cha, tránh mọi offset trước khi
       nó truyền xuống affitrackr-widget. */
    .adv-center:has(affitrackr-widget),
    .adv:has(affitrackr-widget) {
        float: none !important;
        clear: both !important;
        display: block !important;
        width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
    }

    /* Reset wrapper element, giữ padding trong .affi-widget bên trong */
    affitrackr-widget {
        float: none !important;
        clear: both !important;
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;    /* chặn overflow từ child */
        overflow: hidden !important;   /* clip nếu child vẫn vượt */
        margin: 0 !important;
        padding: 0 !important;
        box-sizing: border-box !important;
        text-align: left !important;
    }

    /* ── Header ── */
    .affi-title {
        font-size: 22px;       /* TITLE_SIZE: cỡ chữ tiêu đề widget */
        color: #333;
        border-left: 4px solid #e11d48;
        padding-left: 10px;
        margin: 0 0 16px;
        font-weight: bold;
        text-transform: uppercase;
    }

    /* ── Grid ── */
    .affi-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 15px;
        max-width: 100%;       /* grid không bao giờ vượt widget */
        overflow: hidden;      /* clip ad slot nếu vẫn overflow */
        box-sizing: border-box;
    }
    @media (max-width: 992px) { .affi-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 576px)  { .affi-grid { grid-template-columns: 1fr; } }

    /* ── Card ── */
    .affi-card {
        border: 1px solid #c8b99a;
        border-radius: 4px;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.35s ease, transform 0.35s ease;

        /* ── Newsprint texture — CSS thuần, không cần file ngoài ──
           Lớp 1: vân ngang mờ (sợi giấy ngang)
           Lớp 2: vân dọc mờ hơn (sợi giấy dọc)
           Lớp 3: gradient nền kem không đều (giấy cũ không đồng màu)
           Lớp 4: màu nền gốc */
        background-color: #ede0c4;
        background-image:
            repeating-linear-gradient(
                0deg,
                transparent,
                transparent 2px,
                rgba(160, 130, 80, 0.04) 2px,
                rgba(160, 130, 80, 0.04) 3px
            ),
            repeating-linear-gradient(
                90deg,
                transparent,
                transparent 3px,
                rgba(140, 110, 60, 0.03) 3px,
                rgba(140, 110, 60, 0.03) 4px
            ),
            linear-gradient(
                160deg,
                #f0e4c8 0%,
                #e8d8b0 40%,
                #ede0c4 70%,
                #e5d5aa 100%
            );
    }
    .affi-card.affi-visible {
        opacity: 1;
        transform: translateY(0);
    }
    @media (prefers-reduced-motion: reduce) {
        .affi-card { opacity: 1; transform: none; transition: none; }
    }

    /* 16:9 padding hack */
    .affi-thumb-link {
        display: block;
        width: 100%;
        padding-top: 56.25%;
        position: relative;
        overflow: hidden;
        text-decoration: none;
    }
    .affi-thumb-img {
        position: absolute;
        top: 0; left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.2s;
    }
    .affi-thumb-link:hover .affi-thumb-img { transform: scale(1.04); }

    .affi-card-body {
        padding: 12px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .affi-card-title {
        text-decoration: none;
        color: #1a1208;        /* nâu đen — đọc tốt trên nền kem */
        font-weight: bold;
        font-size: 16px;       /* CARD_TITLE_SIZE: tăng từ 14px lên 16px */
        line-height: 1.45;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 8px;
    }
    .affi-card-title:hover { color: #e11d48; }
    .affi-card-source {
        font-size: 11px;
        color: #8a7d65;        /* nâu nhạt — hòa hợp với nền kem */
        font-weight: 500;
        text-transform: uppercase;
        margin-top: auto;
    }

    /* ── Ad slot ──
       KHÔNG ép height/overflow — để AdSense tự quyết định kích thước.
       Crop quảng cáo vi phạm chính sách Google (partially visible ad).
       grid-column: 1/-1 để span full width grid ở mọi breakpoint.
       max-width: 100% để không bao giờ vượt quá container. */
    .affi-ad-slot {
        grid-column: 1 / -1;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        overflow: hidden;
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.35s ease, transform 0.35s ease;
    }
    .affi-ad-slot.affi-visible {
        opacity: 1;
        transform: translateY(0);
    }
    .affi-ad-slot ins {
        display: block !important;
        width: 100% !important;
        /* KHÔNG set height — AdSense tự fill đúng kích thước */
    }

    /* ── Skeleton ── */
    @keyframes affi-shimmer {
        0%   { background-position: -400px 0; }
        100% { background-position:  400px 0; }
    }
    .affi-skeleton {
        border: 1px solid #eee;
        border-radius: 6px;
        overflow: hidden;
        background: #fff;
    }
    .affi-skeleton-thumb {
        padding-top: 56.25%;
        background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
        background-size: 800px 100%;
        animation: affi-shimmer 1.4s infinite linear;
    }
    .affi-skeleton-body { padding: 12px; }
    .affi-skeleton-line {
        height: 12px;
        border-radius: 4px;
        background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
        background-size: 800px 100%;
        animation: affi-shimmer 1.4s infinite linear;
        margin-bottom: 8px;
    }
    .affi-skeleton-line.affi-short { width: 60%; }
</style>

<script>
class AffitrackrWidget extends HTMLElement {

    // ── Cấu hình AdSense — thay 2 giá trị này ──────────────────
    static AD_CLIENT = 'ca-pub-7078400245394460'; // data-ad-client
    static AD_SLOT   = '7322516041';              // data-ad-slot
    static AD_EVERY  = 3;                         // chèn ad sau mỗi N card
    // ────────────────────────────────────────────────────────────

    connectedCallback() {
        this.classList.add('affi-widget');
        this.innerHTML = `
            <h3 class="affi-title">Có thể bạn quan tâm</h3>
            <div class="affi-grid" id="affi-grid"></div>
        `;
        this._showSkeletons();
        this._loadArticles();
    }

    /* ── Skeleton placeholders ── */
    _showSkeletons() {
        const grid = this.querySelector('#affi-grid');
        grid.innerHTML = Array(8).fill(`
            <div class="affi-skeleton">
                <div class="affi-skeleton-thumb"></div>
                <div class="affi-skeleton-body">
                    <div class="affi-skeleton-line"></div>
                    <div class="affi-skeleton-line affi-short"></div>
                </div>
            </div>
        `).join('');
    }

    /* ── Fisher-Yates shuffle ── */
    _shuffle(arr) {
        const a = [...arr];
        for (let i = a.length - 1; i > 0; i--) {
            const j = Math.floor(Math.random() * (i + 1));
            [a[i], a[j]] = [a[j], a[i]];
        }
        return a;
    }

    /* ── Safe localStorage ── */
    _storageGet(key, fallback) {
        try { return JSON.parse(localStorage.getItem(key)) ?? fallback; }
        catch { return fallback; }
    }
    _storageSet(key, value) {
        try { localStorage.setItem(key, JSON.stringify(value)); }
        catch { /* ignore */ }
    }

    /* ── Fetch với timeout + sessionStorage cache ── */
    async _fetchArticles() {
        const CACHE_KEY = 'affi_articles_cache';
        const CACHE_TTL = 5 * 60 * 1000;

        try {
            const raw = sessionStorage.getItem(CACHE_KEY);
            if (raw) {
                const { ts, data } = JSON.parse(raw);
                if (Date.now() - ts < CACHE_TTL) return data;
            }
        } catch { /* cache miss */ }

        const controller = new AbortController();
        const timer = setTimeout(() => controller.abort(), 5000);

        try {
            const res = await fetch(
                'https://affitrackr.com/cdn/affitrackr/articles.json',
                { signal: controller.signal }
            );
            clearTimeout(timer);
            if (!res.ok) throw new Error(`HTTP ${res.status}`);
            const data = await res.json();
            try {
                sessionStorage.setItem(CACHE_KEY, JSON.stringify({ ts: Date.now(), data }));
            } catch { /* storage full */ }
            return data;
        } catch (err) {
            clearTimeout(timer);
            throw err;
        }
    }

    /* ── Validate URL ── */
    _safeUrl(url) {
        try {
            const u = new URL(url);
            return (u.protocol === 'https:' || u.protocol === 'http:') ? url : '#';
        } catch { return '#'; }
    }

    /* ── Build article card ── */
    _buildCard(item) {
        const card = document.createElement('div');
        card.className = 'affi-card';

        const thumbLink = document.createElement('a');
        thumbLink.href      = this._safeUrl(item.u);
        thumbLink.className = 'affi-thumb-link';
        thumbLink.target    = '_top';
        thumbLink.rel       = 'noopener noreferrer';

        const img = document.createElement('img');
        img.src       = this._safeUrl(item.i);
        img.alt       = String(item.t ?? '').slice(0, 100);
        img.className = 'affi-thumb-img';
        img.loading   = 'lazy';
        img.onerror   = () => { img.style.display = 'none'; };
        thumbLink.appendChild(img);

        const body = document.createElement('div');
        body.className = 'affi-card-body';

        const titleLink = document.createElement('a');
        titleLink.href        = this._safeUrl(item.u);
        titleLink.className   = 'affi-card-title';
        titleLink.target      = '_top';
        titleLink.rel         = 'noopener noreferrer';
        titleLink.textContent = item.t ?? '';

        const source = document.createElement('span');
        source.className   = 'affi-card-source';
        source.textContent = item.src ?? 'VOH';

        body.appendChild(titleLink);
        body.appendChild(source);
        card.appendChild(thumbLink);
        card.appendChild(body);

        return card;
    }

    /* ── Build AdSense slot ── */
    _buildAdSlot(index) {
        const wrapper = document.createElement('div');
        wrapper.className = 'affi-ad-slot';

        const ins = document.createElement('ins');
        ins.className          = 'adsbygoogle';
        ins.style.display      = 'block';
        ins.dataset.adClient   = AffitrackrWidget.AD_CLIENT;
        ins.dataset.adSlot     = AffitrackrWidget.AD_SLOT;
        ins.dataset.adFormat   = 'auto';
        ins.dataset.fullWidthResponsive = 'true';

        wrapper.appendChild(ins);

        // Push sau khi element đã vào DOM (gọi trong _render sau khi append)
        wrapper._activateAd = () => {
            try {
                (window.adsbygoogle = window.adsbygoogle || []).push({});
            } catch (e) {
                console.warn('[affitrackr] AdSense push error:', e);
            }
        };

        return wrapper;
    }

    /* ── Lazy reveal via IntersectionObserver ── */
    _observeElements(els) {
        if (!('IntersectionObserver' in window)) {
            els.forEach(el => el.classList.add('affi-visible'));
            return;
        }
        const observer = new IntersectionObserver((entries) => {
            entries.forEach(entry => {
                if (entry.isIntersecting) {
                    entry.target.classList.add('affi-visible');
                    observer.unobserve(entry.target);
                }
            });
        }, { rootMargin: '0px 0px 80px 0px', threshold: 0.05 });

        els.forEach(el => observer.observe(el));
    }

    /* ── Render: xen kẽ card + ad sau mỗi AD_EVERY card ── */
    _render(articles) {
        const grid = this.querySelector('#affi-grid');
        grid.innerHTML = '';

        const allEls   = [];   // tất cả elements để observe
        const adSlots  = [];   // ad slots cần activate sau khi vào DOM
        let   adCount  = 0;

        // Pattern: [card][AD][card×AD_EVERY][AD][card×AD_EVERY][AD]...
        // Chu kỳ = AD_EVERY + 1 (1 ad + AD_EVERY card)
        // AD nằm ở mixedIndex % (AD_EVERY + 1) === 1
        // Ví dụ AD_EVERY=4: chu kỳ=5, ad ở index 1,6,11,16...
        const cycle = AffitrackrWidget.AD_EVERY + 1;
        let mixedIndex = 0;

        articles.forEach((item) => {
            // Nếu vị trí hiện tại là slot ad → chèn ad trước card
            if (mixedIndex % cycle === 1) {
                const adSlot = this._buildAdSlot(adCount++);
                grid.appendChild(adSlot);
                allEls.push(adSlot);
                adSlots.push(adSlot);
                mixedIndex++;
            }

            const card = this._buildCard(item);
            grid.appendChild(card);
            allEls.push(card);
            mixedIndex++;
        });

        // Activate tất cả ad slots (element đã trong DOM)
        adSlots.forEach(slot => slot._activateAd());

        // 4 elements đầu hiện ngay, còn lại lazy reveal
        allEls.slice(0, 4).forEach(el => el.classList.add('affi-visible'));
        this._observeElements(allEls.slice(4));
    }

    /* ── Main ── */
    async _loadArticles() {
        try {
            const data        = await this._fetchArticles();
            const allArticles = Array.isArray(data?.items) ? data.items : [];
            if (allArticles.length === 0) throw new Error('empty');

            const currentUrl = window.location.href;
            let history = this._storageGet('seen_articles', []);

            let pool = allArticles.filter(a => !history.includes(a.id) && a.u !== currentUrl);
            if (pool.length < 20) {
                history = [];
                pool = allArticles.filter(a => a.u !== currentUrl);
            }

            const recommended = this._shuffle(pool).slice(0, 20);
            recommended.forEach(a => history.push(a.id));
            this._storageSet('seen_articles', history.slice(-200));

            this._render(recommended);

        } catch {
            this.style.display = 'none';
        }
    }
}

if (!customElements.get('affitrackr-widget')) {
    customElements.define('affitrackr-widget', AffitrackrWidget);
}
</script>

<div style="width: 100%; background-color: #fbf3e4; display: flex; justify-content: center; align-items: center; padding: 3px 0;">
  <div style="display: flex; align-items: center;">
    <div style="text-align: center; font-size: 11px; font-weight: normal; background-color: gray; color: white; padding: 1px 5px; /* Khoảng cách giữa chữ Ad và chữ Quảng cáo */ margin: 0 3px; border-radius: 1px; /* Bo cạnh 3px */">Ad</div>
    <div style="text-align: center; font-size: 11px; font-weight: normal; color: #000000;">QUẢNG CÁO</div>
  </div>
</div>
<div style="height: 150px;">
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-7078400245394460"
     crossorigin="anonymous"></script>

<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-7078400245394460"
     data-ad-slot="5024558631"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>
</div>
<script type="text/javascript" class="teads" src="//a.teads.tv/page/158267/tag" async="true"></script>

<zone id="kjbdaxby"></zone>
<script>
arfAsync.push("kjbdaxby");
</script>

VOH FM 99.9 MHz

FM 99.9

Online 360 

VOH AM 610 KHz

AM 610

Thời sự 30p trực tiếp

VOH FM 95.6 MHz

FM 95.6

Nhân Humanity

Giải mã thị trường

Doanh nghiệp hội nhập

Chuyển động 30/7

Môn Quản trị học - Bài 7: Lãnh đạo