/* blog.css — listing + article pages */

/* ==== HERO + LISTING ==== */
.blog-hero {
    padding: 56px 0 32px;
    background: var(--gradient-soft);
    text-align: center;
    position: relative; overflow: hidden;
}
.blog-hero::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background:
        radial-gradient(800px 360px at 80% -10%, rgba(217,70,239,.15), transparent 60%),
        radial-gradient(720px 360px at 12% 20%, rgba(99,102,241,.18), transparent 60%);
}
.blog-hero h1 {
    font-size: clamp(34px, 5vw, 52px);
    margin: 12px 0 14px;
    background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 900; letter-spacing: -1px;
    position: relative;
}
.blog-hero .lead {
    max-width: 700px; margin: 0 auto;
    color: var(--fg-muted); font-size: 17px;
    position: relative;
}

.blog-grid {
    display: grid; gap: 22px;
    grid-template-columns: repeat(3, 1fr);
    max-width: 1180px; margin: 0 auto;
    padding: 48px 24px 80px;
}
@media (max-width: 980px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .blog-grid { grid-template-columns: 1fr; max-width: 480px; } }
.blog-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: transform .25s, box-shadow .25s, border-color .25s;
    display: flex; flex-direction: column;
}
.blog-card:hover {
    transform: translateY(-4px);
    border-color: var(--brand-300);
    box-shadow: 0 18px 36px -12px rgba(99,102,241,.25);
}
html.dark .blog-card:hover { border-color: var(--brand-500); }

/* Thumb: text title nhỏ vừa phải, không to quá */
.blog-card-thumb {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--brand-500), var(--accent-500));
    color: #fff;
    display: grid; place-items: center;
    font-size: 22px; font-weight: 800;
    text-align: center; padding: 18px 20px;
    line-height: 1.2; letter-spacing: -.3px;
    text-decoration: none;
    position: relative; overflow: hidden;
}
.blog-card-thumb::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(120% 120% at 100% 0%, rgba(255,255,255,.18), transparent 60%);
    pointer-events: none;
}
.blog-card-thumb .thumb-icon { display: none; }
.blog-card-thumb .thumb-text {
    position: relative;
    max-width: 100%;
}
.blog-card-thumb[data-tag="veo"] { background: linear-gradient(135deg, #4285F4, #6366f1); }
.blog-card-thumb[data-tag="tool"] { background: linear-gradient(135deg, #6366f1, #d946ef); }
.blog-card-thumb[data-tag="prompt"] { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.blog-card-thumb[data-tag="tiktok"] { background: linear-gradient(135deg, #000, #ff0050); }
.blog-card-thumb[data-tag="sales"] { background: linear-gradient(135deg, #10b981, #059669); }
.blog-card-thumb[data-tag="compare"] { background: linear-gradient(135deg, #8b5cf6, #06b6d4); }
.blog-card-body {
    padding: 22px 22px 24px;
    flex: 1; display: flex; flex-direction: column;
}
.blog-card-meta {
    display: flex; gap: 10px; align-items: center;
    font-size: 12px; color: var(--fg-subtle);
    margin-bottom: 10px;
    text-transform: uppercase; letter-spacing: .5px;
}
.blog-card-meta b { color: var(--brand-600); font-weight: 700; }
html.dark .blog-card-meta b { color: var(--brand-300); }
.blog-card h3 {
    margin: 0 0 10px; font-size: 19px; font-weight: 800;
    color: var(--fg); line-height: 1.35;
}
.blog-card p {
    margin: 0 0 16px; flex: 1;
    color: var(--fg-muted); font-size: 14.5px; line-height: 1.65;
}
.blog-card .btn-read {
    align-self: flex-start;
    color: var(--brand-600); font-weight: 700; font-size: 14px;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 6px;
    transition: gap .2s;
}
html.dark .blog-card .btn-read { color: var(--brand-300); }
.blog-card .btn-read:hover { gap: 10px; }

/* ==== ARTICLE PAGE ==== */
.article-wrap {
    max-width: 760px; margin: 0 auto;
    padding: 48px 24px 60px;
}
.article-meta {
    display: flex; gap: 12px; align-items: center;
    font-size: 13px; color: var(--fg-subtle);
    margin-bottom: 20px;
    text-transform: uppercase; letter-spacing: .5px;
}
.article-meta .tag {
    background: linear-gradient(90deg, rgba(99,102,241,.15), rgba(217,70,239,.10));
    color: var(--brand-600);
    padding: 4px 10px; border-radius: 6px;
    font-size: 11px; font-weight: 700; letter-spacing: .8px;
}
html.dark .article-meta .tag { color: var(--brand-300); }
.article-h1 {
    font-size: clamp(22px, 2.8vw, 30px);
    line-height: 1.3; letter-spacing: -.4px;
    margin: 0 0 16px; color: var(--fg);
    font-weight: 800;
}
.article-lead {
    font-size: 16px; color: var(--fg-muted);
    line-height: 1.65; margin: 0 0 28px;
    padding: 14px 18px;
    background: var(--bg-soft);
    border-left: 3px solid var(--brand-500);
    border-radius: 0 8px 8px 0;
}
.article-body h2 { font-size: 22px; }
.article-body h3 { font-size: 17px; }

.article-body { font-size: 16px; line-height: 1.8; color: var(--fg); }
.article-body h2 {
    font-size: 26px; font-weight: 800;
    margin: 36px 0 14px; color: var(--fg);
    letter-spacing: -.4px;
}
.article-body h3 {
    font-size: 20px; font-weight: 700;
    margin: 28px 0 10px; color: var(--fg);
}
.article-body p { margin: 0 0 16px; color: var(--fg); }
.article-body ul, .article-body ol {
    margin: 0 0 18px 24px; padding-left: 4px;
}
.article-body li { margin-bottom: 8px; color: var(--fg); }
.article-body li b { color: var(--fg); font-weight: 700; }
.article-body a {
    color: var(--brand-600); text-decoration: underline;
    text-decoration-style: dashed; text-underline-offset: 2px;
}
html.dark .article-body a { color: var(--brand-300); }
.article-body code {
    background: rgba(99,102,241,.12); color: var(--brand-600);
    padding: 2px 7px; border-radius: 4px;
    font-family: var(--font-mono); font-size: 14px;
}
html.dark .article-body code { color: var(--brand-300); }
.article-body blockquote {
    margin: 20px 0;
    padding: 14px 20px;
    background: linear-gradient(90deg, rgba(245,158,11,.12), rgba(245,158,11,.04));
    border-left: 4px solid #f59e0b;
    border-radius: 0 8px 8px 0;
    color: var(--fg);
    font-style: italic;
}
.article-body table {
    width: 100%; border-collapse: collapse;
    margin: 20px 0; font-size: 14.5px;
    border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
}
.article-body th {
    background: var(--surface-2); font-weight: 700;
    text-align: left; padding: 12px;
}
.article-body td {
    padding: 12px; border-top: 1px solid var(--border);
}

/* TOC */
.article-toc {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 22px;
    margin: 0 0 28px;
}
.article-toc h4 {
    margin: 0 0 10px; font-size: 13px;
    color: var(--fg-subtle);
    text-transform: uppercase; letter-spacing: .8px;
}
.article-toc ol {
    margin: 0; padding-left: 20px;
}
.article-toc li {
    margin-bottom: 4px; font-size: 14.5px;
}
.article-toc a {
    color: var(--fg); text-decoration: none;
    border-bottom: 1px dotted var(--border-strong);
}
.article-toc a:hover { color: var(--brand-600); border-bottom-color: var(--brand-500); }

/* CTA box mid-article */
.article-cta {
    background: linear-gradient(135deg, rgba(99,102,241,.12), rgba(217,70,239,.10));
    border: 1px solid rgba(99,102,241,.3);
    border-radius: 14px;
    padding: 22px 24px;
    margin: 28px 0;
    text-align: center;
}
.article-cta h3 {
    margin: 0 0 8px !important; color: var(--fg);
    font-size: 18px !important;
}
.article-cta p { margin: 0 0 14px; color: var(--fg-muted); font-size: 14.5px; }
.article-cta .btn-cta {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 22px; border-radius: 10px;
    background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
    color: #fff !important; font-weight: 700; font-size: 14px;
    text-decoration: none !important;
    transition: transform .15s, box-shadow .15s;
}
.article-cta .btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(99,102,241,.5);
}

/* Related articles */
.article-related {
    border-top: 1px solid var(--border);
    padding-top: 32px; margin-top: 40px;
}
.article-related h3 {
    font-size: 20px; margin: 0 0 18px; color: var(--fg); font-weight: 800;
}
.related-grid {
    display: grid; gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.related-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 18px;
    text-decoration: none;
    color: var(--fg);
    transition: border-color .15s, transform .15s;
}
.related-card:hover {
    border-color: var(--brand-300);
    transform: translateY(-2px);
}
html.dark .related-card:hover { border-color: var(--brand-500); }
.related-card .related-tag {
    font-size: 11px; color: var(--brand-600);
    font-weight: 700; text-transform: uppercase;
    letter-spacing: .6px; display: block; margin-bottom: 6px;
}
html.dark .related-card .related-tag { color: var(--brand-300); }
.related-card .related-title {
    font-size: 14.5px; font-weight: 700;
    line-height: 1.4; color: var(--fg);
}