/* ==========================================================================
   Arthix blog and generated pages (prefix bl-). Loads after main.css.
   Spec: BLOG-SEO-PLAN.md section 4.6 (reference: instanceit.com/blogs).
   ========================================================================== */
:root {
    --bl-primary: #1B85FF;
    --bl-primary-dark: #0F6FE0;
    --bl-secondary: #8763FD;
    --bl-text: #1F2938;
    --bl-body: #1D1D1D;
    --bl-muted: #5B6472;
    --bl-faint: #6B7280;
    --bl-line: #E6EBF2;
    --bl-page: #F6F8FC;
    --bl-tint: rgba(27, 133, 255, 0.06);
    --bl-pill: #EAF3FF;
    --bl-shadow: 0 2px 12px rgba(16, 24, 40, 0.05);
    --bl-shadow-card: 0 3px 8px rgba(0, 0, 0, 0.12);
    --bl-radius: 20px;
}

.bl-page { font-family: "Outfit", system-ui, sans-serif; color: var(--bl-text); background: #fff; }
.bl-page .bl-main { background: var(--bl-page); }
.bl-page .bl-chrome { background: #fff; }
.bl-main a { text-decoration: none; }
.bl-wrap { max-width: 1200px; margin: 0 auto; padding: 48px 24px 72px; display: flex; flex-direction: column; gap: 36px; }

/* Page head ----------------------------------------------------------------- */
.bl-pagehead { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.bl-pagehead--left { align-items: flex-start; text-align: left; max-width: 760px; }
.bl-pagehead__title { margin: 0; font-size: 56px; font-weight: 700; line-height: 1.05; letter-spacing: -0.02em; color: var(--bl-text); }
.bl-pagehead__title--sm { font-size: 40px; }
.bl-pagehead__sub { margin: 0; max-width: 640px; font-size: 17px; line-height: 1.55; color: var(--bl-muted); }

/* Shared atoms -------------------------------------------------------------- */
.bl-pill { display: inline-block; background: var(--bl-pill); color: var(--bl-primary); font-size: 12px; font-weight: 600; line-height: 1.2; padding: 6px 12px; border-radius: 30px; white-space: nowrap; }
.bl-pill:hover { color: var(--bl-primary-dark); }
.bl-pill--outline { background: #fff; border: 2px solid rgba(27, 133, 255, 0.15); }
.bl-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.bl-pill--draft { background: #FDE68A; color: #92400E; }
.bl-avatar { width: 32px; height: 32px; flex: 0 0 auto; border-radius: 50%; background: #DCE8F7; color: var(--bl-primary); font-weight: 700; font-size: 13px; display: inline-flex; align-items: center; justify-content: center; }
.bl-avatar--lg { width: 36px; height: 36px; font-size: 14px; }
.bl-avatar--xl { width: 64px; height: 64px; font-size: 22px; }
.bl-author { display: flex; align-items: center; gap: 10px; }
.bl-author__meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.bl-author__name { font-size: 14px; font-weight: 500; color: var(--bl-text); }
a.bl-author__name:hover { color: var(--bl-primary); }
.bl-author__date { font-size: 13px; color: var(--bl-faint); }
.bl-roundbtn { width: 44px; height: 44px; border-radius: 50%; border: 1px solid #D6DEE9; background: #fff; color: var(--bl-text); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font-size: 18px; transition: background 0.15s, color 0.15s; }
.bl-roundbtn:hover { background: var(--bl-primary); color: #fff; border-color: var(--bl-primary); }

/* Cover (image or drawn fallback) ------------------------------------------ */
.bl-cover { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 12px; }
.bl-cover--fallback { position: relative; overflow: hidden; box-sizing: border-box; padding: 18px; display: flex; flex-direction: column; justify-content: space-between; }
.bl-cover__brand { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bl-primary); }
.bl-cover__headline { font-size: 22px; font-weight: 700; line-height: 1.15; color: var(--bl-text); max-width: 78%; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.bl-cover__mark { position: absolute; right: -18px; bottom: -18px; width: 96px; height: 96px; border-radius: 50%; border: 10px solid rgba(27, 133, 255, 0.18); }
.bl-cover__mark::after { content: ""; position: absolute; left: 18px; top: 18px; width: 40px; height: 40px; border-radius: 50%; background: rgba(135, 99, 253, 0.22); }
.bl-tint-mint { background: #E8F7EE; }
.bl-tint-lavender { background: #EEF2FF; }
.bl-tint-peach { background: #FFF4E5; }
.bl-tint-sky { background: #E6F2FF; }
.bl-tint-rose { background: #FDEDEB; }

/* Featured carousel --------------------------------------------------------- */
.bl-featured { position: relative; background: var(--bl-tint); border-radius: var(--bl-radius); padding: 16px 16px 44px; }
.bl-featured__slide { display: none; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: center; }
.bl-featured__slide.is-active { display: grid; }
.bl-featured__media { display: block; }
.bl-featured__media .bl-cover { aspect-ratio: 16 / 10; }
.bl-featured__media .bl-cover__headline { font-size: 34px; max-width: 70%; }
.bl-featured__media .bl-cover--fallback { padding: 24px; }
.bl-featured__body { display: flex; flex-direction: column; gap: 14px; padding: 8px 8px 8px 0; min-width: 0; }
.bl-featured__title { margin: 0; font-size: 26px; font-weight: 600; line-height: 1.3; }
.bl-featured__title a { color: var(--bl-text); }
.bl-featured__title a:hover { color: var(--bl-primary); }
.bl-featured__excerpt { margin: 0; font-size: 16px; line-height: 1.6; color: #4B5563; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.bl-featured__controls { position: absolute; right: 24px; bottom: 18px; display: flex; gap: 8px; }
.bl-dots { position: absolute; left: 0; right: 0; bottom: 18px; display: flex; justify-content: center; gap: 6px; }
.bl-dot { width: 6px; height: 6px; border-radius: 3px; background: #C3D3E8; transition: width 0.2s; }
.bl-dot.is-active { width: 22px; background: var(--bl-primary); }

/* Category tabs ------------------------------------------------------------- */
.bl-tabs { background: #fff; border-radius: 16px; box-shadow: 0 2px 10px rgba(16, 24, 40, 0.06); padding: 6px 12px; }
.bl-tabs__scroll { display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.bl-tabs__scroll::-webkit-scrollbar { display: none; }
.bl-tabs__item { white-space: nowrap; padding: 14px 18px; font-size: 15px; font-weight: 500; color: #4B5563; border-bottom: 2px solid transparent; }
.bl-tabs__item:hover { color: var(--bl-primary); }
.bl-tabs__item.is-active { color: var(--bl-primary); font-weight: 600; border-bottom-color: var(--bl-primary); }

/* Card grid ----------------------------------------------------------------- */
.bl-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.bl-card { background: #fff; border-radius: var(--bl-radius); padding: 16px; box-shadow: var(--bl-shadow); display: flex; flex-direction: column; gap: 14px; transition: transform 0.2s, box-shadow 0.2s; }
.bl-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(16, 24, 40, 0.09); }
.bl-card__media { display: block; }
.bl-card__body { display: flex; flex-direction: column; gap: 12px; flex: 1 1 auto; }
.bl-card__title { margin: 0; font-size: 18px; font-weight: 600; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.bl-card__title a { color: var(--bl-text); }
.bl-card__title a:hover { color: var(--bl-primary); }
.bl-card__author { margin-top: auto; }

/* Pagination ---------------------------------------------------------------- */
.bl-pagination { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.bl-pagination__nav { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 16px; border-radius: 22px; color: var(--bl-text); font-size: 15px; font-weight: 500; }
.bl-pagination__nav:hover { background: #fff; color: var(--bl-primary); }
.bl-pagination__nav.is-disabled { color: #9AA3B2; cursor: default; }
.bl-pagination__num { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: #fff; border: 1px solid #D6DEE9; color: var(--bl-text); font-weight: 500; font-size: 15px; }
.bl-pagination__num:hover { border-color: var(--bl-primary); color: var(--bl-primary); }
.bl-pagination__num.is-active { background: var(--bl-primary); border-color: var(--bl-primary); color: #fff; font-weight: 600; }

/* Post: nav, hero, layout --------------------------------------------------- */
.bl-postnav { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: -8px; }
.bl-back { display: inline-flex; align-items: center; gap: 10px; color: var(--bl-text); font-size: 15px; font-weight: 500; min-height: 44px; }
.bl-back:hover { color: var(--bl-primary); }
.bl-back__icon { width: 28px; height: 28px; border-radius: 50%; background: #fff; border: 1px solid #D6DEE9; display: inline-flex; align-items: center; justify-content: center; color: var(--bl-primary); font-size: 16px; }
.bl-crumbs { font-size: 13px; color: var(--bl-faint); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.bl-crumbs a { color: var(--bl-faint); }
.bl-crumbs a:hover { color: var(--bl-primary); }
.bl-crumbs__current { color: var(--bl-text); max-width: 420px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.bl-hero { background: var(--bl-tint); border-radius: var(--bl-radius); padding: 16px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: center; }
.bl-hero__media .bl-cover--fallback { padding: 24px; }
.bl-hero__media .bl-cover__headline { font-size: 34px; max-width: 70%; }
.bl-hero__body { display: flex; flex-direction: column; gap: 16px; padding: 8px 8px 8px 0; min-width: 0; }
.bl-hero__title { margin: 0; font-size: 28px; font-weight: 600; line-height: 1.5; color: var(--bl-text); }
.bl-hero--author { grid-template-columns: auto minmax(0, 1fr); align-items: center; padding: 24px; }
.bl-hero--author .bl-hero__body { gap: 8px; }

.bl-layout { display: flex; flex-wrap: wrap; gap: 32px; align-items: flex-start; }
.bl-article { flex: 999 1 560px; min-width: 0; background: #fff; border-radius: var(--bl-radius); padding: 36px; box-sizing: border-box; box-shadow: var(--bl-shadow); }
.bl-aside { flex: 1 1 300px; max-width: 360px; display: flex; flex-direction: column; gap: 20px; position: sticky; top: 100px; }

/* Article typography -------------------------------------------------------- */
.bl-body { font-size: 18px; line-height: 28px; color: var(--bl-body); }
.bl-body p { margin: 0 0 20px; font-size: 18px; line-height: 28px; color: var(--bl-body); }
.bl-body h2 { margin: 36px 0 14px; font-size: 24px; font-weight: 600; line-height: 1.3; color: var(--bl-text); scroll-margin-top: 110px; }
.bl-body h3 { margin: 28px 0 10px; font-size: 20px; font-weight: 600; line-height: 1.4; color: var(--bl-text); scroll-margin-top: 110px; }
.bl-body h2:first-child { margin-top: 0; }
.bl-body ul, .bl-body ol { margin: 0 0 20px; padding-left: 24px; }
.bl-body li { margin-bottom: 8px; }
.bl-body a { color: var(--bl-primary); text-decoration: underline; text-underline-offset: 2px; }
.bl-body a:hover { color: var(--bl-primary-dark); }
.bl-body strong { font-weight: 600; color: var(--bl-text); }
.bl-body img { max-width: 100%; height: auto; border-radius: 12px; }
.bl-body blockquote { margin: 0 0 20px; padding: 14px 18px; border-left: 4px solid var(--bl-primary); background: var(--bl-pill); border-radius: 0 12px 12px 0; font-size: 17px; }
.bl-body blockquote p:last-child { margin-bottom: 0; }
.bl-body table { border-collapse: collapse; width: 100%; font-size: 16px; line-height: 1.5; }
.bl-body th, .bl-body td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--bl-line); vertical-align: top; }
.bl-body th { background: var(--bl-pill); color: var(--bl-text); font-weight: 600; }
.bl-body .bl-table { overflow-x: auto; border: 1px solid var(--bl-line); border-radius: 12px; margin: 0 0 20px; }
.bl-body .bl-table table { margin: 0; }
.bl-body .bl-note { display: flex; gap: 12px; background: var(--bl-pill); border-radius: 12px; padding: 16px 18px; margin: 0 0 24px; font-size: 16px; line-height: 26px; color: var(--bl-text); }
.bl-body .bl-note::before { content: "i"; flex: 0 0 auto; width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--bl-primary); color: var(--bl-primary); font-weight: 700; font-size: 13px; display: inline-flex; align-items: center; justify-content: center; margin-top: 2px; }
.bl-body .bl-note p { margin: 0; font-size: 16px; line-height: 26px; }
.bl-body pre { background: #0F172A; color: #E2E8F0; padding: 16px 18px; border-radius: 12px; overflow-x: auto; font-size: 14px; line-height: 1.6; margin: 0 0 20px; }
.bl-body code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.92em; background: #F1F3F7; padding: 1px 6px; border-radius: 6px; }
.bl-body pre code { background: none; padding: 0; }

/* FAQ ----------------------------------------------------------------------- */
.bl-faq { display: flex; flex-direction: column; gap: 10px; margin: 0 0 8px; }
.bl-faq details { border: 1px solid var(--bl-line); border-radius: 12px; padding: 14px 18px; background: #fff; }
.bl-faq summary { font-size: 17px; font-weight: 600; color: var(--bl-text); cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.bl-faq summary::-webkit-details-marker { display: none; }
.bl-faq summary::after { content: "+"; color: var(--bl-primary); font-size: 20px; line-height: 1; flex: 0 0 auto; }
.bl-faq details[open] summary::after { content: "–"; }
.bl-faq__a { margin: 10px 0 0; font-size: 16px; line-height: 26px; color: var(--bl-body); }

/* CTA ----------------------------------------------------------------------- */
.bl-cta { display: flex; gap: 16px; background: var(--bl-primary); border-radius: 16px; color: #fff; }
.bl-cta--wide { flex-wrap: wrap; align-items: center; justify-content: space-between; padding: 24px 28px; margin: 28px 0; }
.bl-cta--side { flex-direction: column; padding: 20px; border-radius: 10px; gap: 10px; }
.bl-cta__text { display: flex; flex-direction: column; gap: 6px; flex: 1 1 320px; min-width: 0; }
.bl-cta__headline { font-size: 20px; font-weight: 600; color: #fff; }
.bl-cta--side .bl-cta__headline { font-size: 18px; }
.bl-cta__sub { font-size: 15px; line-height: 1.5; color: #E6F0FF; }
.bl-cta--side .bl-cta__sub { font-size: 14px; }
.bl-cta__btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 22px; border-radius: 30px; background: #fff; color: var(--bl-primary); font-weight: 600; font-size: 15px; white-space: nowrap; transition: transform 0.15s; }
.bl-cta__btn:hover { color: var(--bl-primary-dark); transform: translateY(-1px); }
.bl-cta__btn--primary { background: var(--bl-primary); color: #fff; }
.bl-cta__btn--primary:hover { color: #fff; background: var(--bl-primary-dark); }
.bl-cta__btn--ghost { background: #fff; border: 1px solid #D6DEE9; color: var(--bl-text); }

/* Author box ---------------------------------------------------------------- */
.bl-authorbox { display: flex; gap: 16px; align-items: flex-start; border-top: 1px solid var(--bl-line); padding-top: 24px; }
.bl-authorbox__text { display: flex; flex-direction: column; gap: 4px; }
.bl-authorbox__name { font-size: 17px; font-weight: 600; color: var(--bl-text); }
.bl-authorbox__role { font-size: 13px; color: var(--bl-faint); }
.bl-authorbox__bio { margin: 4px 0 2px; font-size: 15px; line-height: 24px; color: #4B5563; }
.bl-authorbox__link { font-size: 14px; font-weight: 500; color: var(--bl-primary); }

/* Sidebar cards ------------------------------------------------------------- */
.bl-side-card { background: #fff; border-radius: 10px; box-shadow: var(--bl-shadow-card); padding: 16px; display: flex; flex-direction: column; gap: 4px; }
.bl-side-card__title { font-size: 18px; font-weight: 600; color: var(--bl-text); margin-bottom: 6px; }
.bl-toc__link { display: block; padding: 8px 10px; border-radius: 8px; color: #4B5563; font-size: 14px; line-height: 1.4; }
.bl-toc__link--l3 { padding-left: 24px; font-size: 13px; }
.bl-toc__link:hover { background: var(--bl-pill); color: var(--bl-primary); }
.bl-share__row { display: flex; gap: 8px; flex-wrap: wrap; }
.bl-share__btn { width: 44px; height: 44px; border-radius: 50%; border: 0; background: #F1F3F7; color: var(--bl-text); display: inline-flex; align-items: center; justify-content: center; font-size: 18px; cursor: pointer; transition: background 0.15s, color 0.15s; }
.bl-share__btn:hover { background: var(--bl-primary); color: #fff; }
.bl-share__btn--wa { background: #E8F7EE; color: #1E9E4A; }
.bl-share__btn--li { background: var(--bl-pill); color: var(--bl-primary); }
.bl-share__btn.is-done { background: #1E9E4A; color: #fff; }

/* Related ------------------------------------------------------------------- */
.bl-related { display: flex; flex-direction: column; gap: 20px; margin-top: 8px; }
.bl-related__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.bl-related__title { margin: 0; font-size: 28px; font-weight: 600; color: var(--bl-text); }
.bl-related__all { font-size: 15px; font-weight: 500; color: var(--bl-primary); }

/* 404 ----------------------------------------------------------------------- */
.bl-404 { align-items: center; text-align: center; gap: 16px; padding-top: 72px; padding-bottom: 96px; }
.bl-404__code { font-size: 96px; font-weight: 700; line-height: 1; color: var(--bl-primary); letter-spacing: -0.04em; }
.bl-404__links { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 8px; }

/* Responsive ---------------------------------------------------------------- */
@media (max-width: 991px) {
    .bl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .bl-aside { position: static; max-width: none; }
    .bl-pagehead__title { font-size: 44px; }
}
@media (max-width: 640px) {
    .bl-wrap { padding: 28px 16px 48px; gap: 24px; }
    .bl-grid { grid-template-columns: repeat(1, minmax(0, 1fr)); gap: 16px; }
    .bl-featured { padding: 12px 12px 56px; }
    .bl-featured__slide.is-active { grid-template-columns: repeat(1, minmax(0, 1fr)); gap: 12px; }
    .bl-featured__media .bl-cover__headline { font-size: 24px; }
    .bl-featured__title { font-size: 20px; }
    .bl-featured__controls { right: 12px; bottom: 10px; }
    .bl-dots { justify-content: flex-start; left: 16px; bottom: 26px; }
    .bl-hero { grid-template-columns: repeat(1, minmax(0, 1fr)); padding: 12px; }
    .bl-hero__media .bl-cover__headline { font-size: 24px; }
    .bl-hero__title { font-size: 22px; line-height: 1.4; }
    .bl-hero--author { grid-template-columns: auto minmax(0, 1fr); }
    .bl-article { padding: 20px; }
    .bl-body, .bl-body p { font-size: 17px; line-height: 27px; }
    .bl-pagehead__title { font-size: 40px; }
    .bl-pagehead__title--sm { font-size: 30px; }
    .bl-crumbs { display: none; }
    .bl-cta--wide { padding: 20px; }
    .bl-related__title { font-size: 22px; }
}

/* Server-rendered blog (Arthix.Info) ------------------------------------------ */
img.bl-avatar { object-fit: cover; }
.bl-preview-bar { position: sticky; top: 0; z-index: 1000; background: #FDE68A; color: #92400E; font-size: 14px; font-weight: 600; text-align: center; padding: 8px 16px; }
.bl-preview-bar a { color: #92400E; text-decoration: underline; }
.bl-empty { text-align: center; color: #5B6475; padding: 40px 16px; }
.bl-pagination__gap { min-width: 24px; text-align: center; color: #9AA3B2; }